CN117659665A - Wear-resistant spraying-free polycarbonate material and preparation method and application thereof - Google Patents
Wear-resistant spraying-free polycarbonate material and preparation method and application thereof Download PDFInfo
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- 239000004417 polycarbonate Substances 0.000 title claims abstract description 64
- 239000000463 material Substances 0.000 title claims abstract description 62
- 229920000515 polycarbonate Polymers 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000004431 polycarbonate resin Substances 0.000 claims abstract description 50
- 229920005668 polycarbonate resin Polymers 0.000 claims abstract description 50
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 239000012745 toughening agent Substances 0.000 claims abstract description 17
- 239000003963 antioxidant agent Substances 0.000 claims description 15
- 230000003078 antioxidant effect Effects 0.000 claims description 14
- 239000000314 lubricant Substances 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- 238000005299 abrasion Methods 0.000 claims description 9
- OJMOMXZKOWKUTA-UHFFFAOYSA-N aluminum;borate Chemical compound [Al+3].[O-]B([O-])[O-] OJMOMXZKOWKUTA-UHFFFAOYSA-N 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 229920001296 polysiloxane Polymers 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 230000009477 glass transition Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 2
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 2
- TXQVDVNAKHFQPP-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(CO)CO TXQVDVNAKHFQPP-UHFFFAOYSA-N 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 2
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 2
- 229920001568 phenolic resin Polymers 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- -1 polydimethylsiloxane Polymers 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 5
- 230000000295 complement effect Effects 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000004428 Hopelex Substances 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000861 blow drying Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a wear-resistant spraying-free polycarbonate material and a preparation method and application thereof, wherein the wear-resistant spraying-free polycarbonate material comprises a first polycarbonate resin, a second polycarbonate resin, an antiwear agent and a toughening agent in specific parts, wherein the number average molecular weight of the first polycarbonate resin is 5-10 ten thousand, and the number average molecular weight of the second polycarbonate resin is 2-4 ten thousand; by adopting two polycarbonate resins with specific molecular weights to compound in a specific dosage range, the two polycarbonate resins can complement each other to play a synergistic effect, and then the specific parts of wear-resistant agent and toughening agent are added in a matched manner, so that the obtained wear-resistant spraying-free polycarbonate material has excellent wear resistance, high elasticity, good thermal stability and excellent chemical corrosion resistance.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a wear-resistant spraying-free polycarbonate material, and a preparation method and application thereof.
Background
The polycarbonate is PC for short, is one of five engineering plastics, is thermoplastic engineering plastic with excellent comprehensive performance, has the advantages of being amorphous, nontoxic, odorless and tasteless, excellent in weather resistance, impact resistance and electrical insulation performance and the like, has high light transmittance, and is widely applied to the fields of electronic and electric appliance shells, automobile industry, optical discs, packaging, computers, medical and health care, leisure equipment and the like.
In recent years, along with the increasing importance of people on environmental problems, the use of spraying-free resin materials on the surfaces of products gradually becomes a trend, and the spraying-free resin materials can replicate the gorgeous color tone generated by spray painting and the special effects of pearl, flash and metallic luster, thereby meeting the aesthetic demands of people.
CN115710420a discloses a spraying-free PC composition with metal texture, and a preparation method and application thereof, comprising the following components in parts by weight: 86 to 94.5 parts of PC, 5 to 10 parts of toughening agent, 0.5 to 4 parts of terephthalic acid modified metal powder, 0.1 to 1 part of antioxidant and 0.2 to 1 part of lubricant, and the preparation method comprises the following steps: adding the components into a high-speed mixer, fully mixing, then placing the mixture into a screw machine, controlling the rotating speed of the screw machine to be 300-500 rpm, controlling the temperature to be 200-260 ℃, extruding and granulating to obtain a spraying-free PC material with metal texture, and using the spraying-free PC composition as a raw material of automobile ornaments or household appliances; the invention can obviously improve the compatibility of the metal powder and the PC, improve the dispersion of the metal powder in the PC, improve the metal texture, and reduce the use amount of the metal powder and the reduction of the material performance; however, the PC composition provided by the invention needs to be added with metal powder, so that the dispersion uniformity is poor, and the wear resistance is still to be improved.
Accordingly, in view of the above-mentioned shortcomings, there is an urgent need to develop a wear-resistant spray-free polycarbonate material having excellent wear resistance.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the wear-resistant spraying-free polycarbonate material, the preparation method and the application thereof, and the wear-resistant spraying-free polycarbonate material which is finally obtained has excellent wear resistance, good thermal stability and excellent chemical corrosion resistance by adopting the matching of the two types of polycarbonate resins with the molecular weights, combining the respective advantages of the two types of polycarbonate resins with the specific molecular weights, supplementing the advantages and adding the wear-resistant agent and the toughening agent.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a wear-resistant spraying-free polycarbonate material, which comprises the following components in parts by weight:
the first polycarbonate resin has a number average molecular weight of 5 to 10 ten thousand, and the second polycarbonate resin has a number average molecular weight of 2 to 4 ten thousand.
The amount of the first polycarbonate resin may be 36 parts by weight, 37 parts by weight, 38 parts by weight, 39 parts by weight, 40 parts by weight, 41 parts by weight, 42 parts by weight, 43 parts by weight or 44 parts by weight, and specific point values among the above point values, which are limited in space and for brevity, the present invention is not exhaustive.
The second polycarbonate resin may be used in an amount of 40.5 parts by weight, 41 parts by weight, 41.5 parts by weight, 42 parts by weight, 42.5 parts by weight, 43 parts by weight, 43.5 parts by weight, 44 parts by weight or 44.5 parts by weight, and specific point values among the above point values are limited in space and for brevity, the present invention is not exhaustive to list the specific point values included in the range.
The antiwear agent may be 11 parts by weight, 12 parts by weight, 13 parts by weight, 14 parts by weight, 15 parts by weight, 16 parts by weight, 17 parts by weight, 18 parts by weight or 19 parts by weight, and specific point values between the above point values, are limited in length and for brevity, the present invention is not intended to exhaustively list the specific point values included in the range.
The toughening agent may be 3 parts by weight, 4 parts by weight, 5 parts by weight, 6 parts by weight, 7 parts by weight, 8 parts by weight or 9 parts by weight, and specific point values between the above point values, and the present invention is not intended to be exhaustive of the specific point values included in the range for reasons of space and for reasons of brevity.
The number average molecular weight of the first polycarbonate resin may be 5.5 ten thousand, 6 ten thousand, 6.5 ten thousand, 7 ten thousand, 7.5 ten thousand, 8 ten thousand, 8.5 ten thousand, 9 ten thousand or 9.5 ten thousand, and specific point values among the above point values are limited in space and for brevity, and the present invention does not exhaustively enumerate specific point values included in the range.
The number average molecular weight of the second polycarbonate resin may be 2.2 ten thousand, 2.4 ten thousand, 2.6 ten thousand, 2.8 ten thousand, 3 ten thousand, 3.2 ten thousand, 3.4 ten thousand, 3.6 ten thousand or 3.8 ten thousand, and specific point values among the above point values, which are limited in space and are not exhaustive in view of brevity.
The wear-resistant spraying-free polycarbonate material provided by the invention comprises a first polycarbonate resin, a second polycarbonate resin, an anti-wear agent and a toughening agent in a specific part; by adopting two polycarbonate resins with specific molecular weights to compound in a specific dosage range, the two polycarbonate resins can complement each other to play a synergistic effect, and the wear-resistant agent and the toughening agent are added in a matched manner, so that the obtained wear-resistant spraying-free polycarbonate material has excellent wear resistance, high elasticity, good thermal stability and excellent chemical corrosion resistance.
Preferably, the density of the first polycarbonate resin is 1.18 to 1.20g/cm 3 For example 1.185g/cm 3 、1.19g/cm 3 Or 1.195g/cm 3 And the particular values between the above-mentioned values, are limited in space and for brevity, the invention is not intended to exhaustively enumerate the specific values included in the range.
Preferably, the glass transition temperature (Tg) of the first polycarbonate resin is 140 to 150 ℃, such as 141 ℃, 142 ℃, 143 ℃, 144 ℃, 145 ℃, 146 ℃, 147 ℃, 148 ℃ or 149 ℃, and specific point values between the above point values, for the sake of brevity and for the sake of brevity, the present invention is not exhaustive of the specific point values included in the range.
Preferably, the relative density of the second polycarbonate resin is 1.18 to 1.19g/cm 3 For example 1.185g/cm 3 、1.19g/cm 3 Or 1.195g/cm 3 And between the above point valuesIs limited in space and for brevity, the invention is not intended to exhaustively list the specific point values encompassed by the described range.
Preferably, the glass transition temperature (Tg) of the second polycarbonate resin is 140 to 150 ℃, such as 141 ℃, 142 ℃, 143 ℃, 144 ℃, 145 ℃, 146 ℃, 147 ℃, 148 ℃ or 149 ℃, and specific point values between the above, for the sake of brevity and for the sake of brevity, the present invention is not exhaustive of the specific point values included in the range.
In the present invention, the first polycarbonate resin is preferably 3103 of Bayer chemistry, and the second polycarbonate is preferably PC-1000L-NC of HOPELEX.
Preferably, the antiwear agent comprises any one or a combination of at least two of aluminum borate whisker, silicone powder or whisker silicon, and further preferably aluminum borate whisker.
The aluminum borate whisker provided by the invention has lower density, higher elastic modulus than silicon carbide whisker, higher tensile strength than potassium titanate whisker, similar hardness to glass fiber, but with the cost of only 1/10-1/100 of that of the silicon carbide whisker, so that the aluminum borate whisker is used as an antiwear agent and added into a polycarbonate material, and the elasticity, the thermal stability, the wear resistance and the chemical corrosion resistance of the polycarbonate material can be greatly improved; the silicone powder is rigid particles, has the effect of a nucleating agent in the composite material, can be uniformly dispersed in the composite material, has the advantage of good self-lubricating performance, can migrate to the surface layer of the composite material to form a thin layer of lubricant molecules, and can reduce the surface scratch friction coefficient by the surface lubricating effect, so that the silicone powder can be applied to the polycarbonate material as an anti-wear agent, and can effectively improve the surface scratch resistance of the polycarbonate material; the whisker silicon has a fibrous structure, has high strength and high modulus, can be uniformly dispersed in resin, plays a role of a framework, and can be transmitted to the whisker silicon from a matrix through an interface layer when subjected to external force, and the whisker silicon bears partial stress so that the stress borne by the matrix is dispersed; in addition, the resin is easy to deform under the action of external force, and can absorb the impact vibration energy due to the existence of whisker silicon, so that the crack is blocked when encountering whisker in the process of expansion, and the crack is restrained, thereby having the toughening effect and reducing the formation of scratches.
Preferably, the aluminium borate whisker has a particle size of 1 to 10 μm, for example 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm or 9 μm, and specific point values between the above point values, are limited in space and for the sake of brevity the invention is not exhaustive of the specific point values comprised in the range.
Preferably, the silicone powder has a particle size of 5 to 6 μm, for example 5.1 μm, 5.2 μm, 5.3 μm, 5.4 μm, 5.5 μm, 5.6 μm, 5.7 μm, 5.8 μm or 5.9 μm, and specific point values between the above point values, are limited in space and for the sake of brevity, the present invention is not exhaustive of the specific point values included in the range.
Preferably, the whisker silicon has a particle size of 20 to 200 μm, for example 40 μm, 60 μm, 80 μm, 100 μm, 120 μm, 140 μm, 160 μm or 180 μm, and specific point values between the above point values, are limited in space and for the sake of brevity, the invention is not exhaustive of the specific point values included in the range.
Preferably, the toughening agent comprises an epoxy resin and/or a phenolic resin.
Preferably, the wear-resistant spraying-free polycarbonate material further comprises an antioxidant.
Preferably, the antioxidant comprises a phosphite antioxidant.
Preferably, the antioxidant is present in the abrasion-resistant spray-free polycarbonate material in an amount of 0.1 to 0.5 parts by weight, for example, 0.15 parts by weight, 0.2 parts by weight, 0.25 parts by weight, 0.3 parts by weight, 0.35 parts by weight, 0.4 parts by weight or 0.45 parts by weight, and specific point values between the above-mentioned point values, are limited in length and for brevity, and the present invention is not exhaustive of the specific point values included in the range.
Preferably, the antioxidant includes antioxidant 168.
Preferably, the wear-resistant spray-free polycarbonate material further comprises a lubricant.
Preferably, the amount of lubricant in the abrasion-resistant spray-free polycarbonate material is 0.1 to 1 part by weight, for example, 0.2 part by weight, 0.3 part by weight, 0.4 part by weight, 0.5 part by weight, 0.6 part by weight, 0.7 part by weight, 0.8 part by weight or 0.9 part by weight, and specific point values between the above point values, are limited in length and for brevity, the present invention is not exhaustive of the specific point values included in the range.
Preferably, the lubricant comprises any one or a combination of at least two of pentaerythritol stearate, polydimethylsiloxane or ethylene bis-stearamide.
In a second aspect, the present invention provides a method for preparing the wear-resistant spray-free polycarbonate material according to the first aspect, the method comprising: and mixing the first polycarbonate resin, the second polycarbonate resin, the wear-resistant agent, the toughening agent, the optional antioxidant and the optional lubricant, and extruding to obtain the wear-resistant spraying-free polycarbonate material.
Preferably, the extrusion is performed in a twin screw extruder.
Preferably, the twin screw extruder has a temperature of 200 to 260 ℃, such as 210 ℃, 220 ℃, 230 ℃, 240 ℃ or 250 ℃, and specific point values between the above point values, the present invention is not intended to be exhaustive of the specific point values included in the range for reasons of space and for reasons of simplicity.
In a third aspect, the present invention provides a use of the abrasion-resistant spray-free polycarbonate material according to the first aspect as a material for automotive interiors and exteriors, communication equipment or electronic appliances.
Compared with the prior art, the invention has the following beneficial effects:
the wear-resistant spraying-free polycarbonate material provided by the invention comprises a first polycarbonate resin, a second polycarbonate resin, an anti-wear agent and a toughening agent in specific parts, wherein the number average molecular weight of the first polycarbonate resin is 5-10 ten thousand, and the number average molecular weight of the second polycarbonate resin is 2-4 ten thousand; by adopting two polycarbonate resins with specific molecular weights to compound in a specific dosage range, the two polycarbonate resins can complement each other to play a synergistic effect, and then the specific parts of wear-resistant agent and toughening agent are added in a matched manner, so that the obtained wear-resistant spraying-free polycarbonate material has excellent wear resistance, high elasticity, good thermal stability and excellent chemical corrosion resistance.
Detailed Description
The technical scheme of the invention is further described by the following specific embodiments. It will be apparent to those skilled in the art that the examples are merely to aid in understanding the invention and are not to be construed as a specific limitation thereof.
The information on the partial raw materials involved in the embodiments of the present invention is as follows:
first polycarbonate resin: number average molecular weight of 6 ten thousand and density of 1.19g/cm 3 Tg 145 ℃, from bayer chemistry, 3103;
second polycarbonate resin: number average molecular weight of 3 ten thousand and density of 1.185g/cm 3 Tg is 143 ℃, from HOPELEX, PC-1000L-NC;
epoxy resin: from the three-wood epoxy, SM 828;
aluminum borate whisker: the average particle diameter was 6. Mu.m;
silicone powder: the average particle diameter was 5.5. Mu.m;
whisker silicon: the average particle diameter is 80-120 mu m.
Examples 1 to 7
The wear-resistant spraying-free polycarbonate material has the specific components and the dosages shown in the table 1, and the dosages of all the components in the table 1 are in parts by weight;
TABLE 1
The preparation method of the wear-resistant spraying-free polycarbonate material provided in the embodiments 1 to 7 comprises the following steps:
uniformly mixing the first polycarbonate resin, the second polycarbonate resin, the wear-resistant agent, the toughening agent, the antioxidant and the lubricant by a high-speed mixer for 5min, adding the mixed materials into a double-screw extruder for melt co-extrusion, wherein the temperature of the double-screw extruder is as follows: the temperature of the second area is 230 ℃, the temperature of the third area is 240 ℃, the temperature of the fourth area is 250 ℃, the temperature of the fifth area is 230 ℃, the temperature of the sixth area is 255 ℃, the temperature of the seventh area is 255 ℃, the temperature of the eighth area is 255 ℃, the temperature of the ninth area is 255 ℃, the temperature of the tenth area is 255 ℃, the temperature of the eleventh area is 245 ℃, the screw speed of the extruder is 600 revolutions per minute, the residence time is 3 minutes, and the wear-resistant spray-free polycarbonate material is obtained after the extrusion of the screw, cooling, blow drying and granulating.
Comparative examples 1 to 6
The specific components of the polycarbonate material are shown in table 2, and in table 2, the use amount of each component is "parts by weight";
TABLE 2
The preparation method of the polycarbonate material provided in comparative examples 1 to 6 comprises:
uniformly mixing the first polycarbonate resin, the second polycarbonate resin, the wear-resistant agent, the toughening agent, the antioxidant and the lubricant by a high-speed mixer for 5min, adding the mixed materials into a double-screw extruder for melt co-extrusion, wherein the temperature of the extruder is as follows: the temperature of the second area is 230 ℃, the temperature of the third area is 240 ℃, the temperature of the fourth area is 250 ℃, the temperature of the fifth area is 230 ℃, the temperature of the sixth area is 255 ℃, the temperature of the seventh area is 255 ℃, the temperature of the eighth area is 255 ℃, the temperature of the ninth area is 255 ℃, the temperature of the tenth area is 255 ℃, the temperature of the eleventh area is 245 ℃, the screw speed of the extruder is 600 revolutions per minute, the residence time is 3 minutes, and the polycarbonate material is obtained after the cooling, the drying and the granulating after the screw extrusion.
Performance test:
(1) Wear resistance: the test was performed at 23℃and 50% with pencil hardness, according to the test method provided by ASTM D3363;
(2) Thermal stability: the test is performed according to the test method provided in ISO 11357-3:2018, ISO 11357-2:2020.
The polycarbonate materials provided in examples 1 to 7 and comparative examples 1 to 6 were tested according to the above test methods, and the test results are shown in table 3:
TABLE 3 Table 3
From the data in table 3, it can be seen that: the wear-resistant spraying-free polycarbonate material provided by the invention has excellent thermal stability and wear resistance;
specifically, the pencil hardness of the wear-resistant spraying-free polycarbonate material provided in examples 1 to 7 is 2B to HB, and the heat resistance temperature in a thermal stability test is 144.2 to 145.2 ℃;
compared with example 1, the polycarbonate materials provided in comparative examples 1-2 only adopt a single type of polycarbonate resin, and further the pencil hardness is only 4B-5B, which indicates that the wear resistance is poor;
the amounts of the first polycarbonate resin and the second polycarbonate resin added in the polycarbonate materials provided in comparative examples 3 to 4 are not within the scope of the present invention, as compared with example 1, and further the abrasion resistance of the resulting polycarbonate materials is also poor;
compared with the polycarbonate material provided in the example 1, the polycarbonate material provided in the comparative example 5 has lower addition amount of the wear-resistant agent and further has poorer wear resistance;
the polycarbonate material provided in comparative example 6, without the addition of the toughening agent, also resulted in a decrease in pencil hardness of the polycarbonate material, as compared to example 1.
The applicant states that the present invention is described by way of the above examples as a wear resistant, spray free polycarbonate material and methods of making and using the same, but the present invention is not limited to, i.e., does not mean that the present invention must be practiced in dependence upon, the above examples. It should be apparent to those skilled in the art that any modification of the present invention, equivalent substitution of raw materials for the product of the present invention, addition of auxiliary components, selection of specific modes, etc., falls within the scope of the present invention and the scope of disclosure.
Claims (10)
1. The wear-resistant spraying-free polycarbonate material is characterized by comprising the following components in parts by weight:
35-45 parts by weight of a first polycarbonate resin;
40-45 parts by weight of a second polycarbonate resin;
10-20 parts by weight of an antiwear agent;
2-10 parts by weight of a toughening agent;
the first polycarbonate resin has a number average molecular weight of 5 to 10 ten thousand, and the second polycarbonate resin has a number average molecular weight of 2 to 4 ten thousand.
2. The abrasion resistant spray-free polycarbonate material of claim 1, wherein the first polycarbonate resin has a density of 1.18-1.20 g/cm 3 ；
Preferably, the glass transition temperature of the first polycarbonate resin is 140 to 150 ℃.
3. The abrasion resistant spray-free polycarbonate material of claim 1 or 2, wherein the second polycarbonate resin has a density of 1.18-1.19 g/cm 3 ；
Preferably, the glass transition temperature of the second polycarbonate resin is 140 to 150 ℃.
4. A wear resistant spray free polycarbonate material according to any one of claims 1 to 3, wherein the wear resistant agent comprises any one or a combination of at least two of aluminium borate whiskers, silicone powder or whisker silicon, preferably aluminium borate whiskers;
preferably, the particle size of the aluminum borate whisker is 1-10 mu m;
preferably, the silicone powder has a particle size of 5 to 6 μm;
preferably, the grain size of the whisker silicon is 20-200 μm.
5. The abrasion resistant spray-free polycarbonate material of any of claims 1-4, wherein the toughening agent comprises an epoxy resin and/or a phenolic resin.
6. The wear resistant, spray free polycarbonate material of any of claims 1-5, further comprising an antioxidant;
preferably, the content of the antioxidant in the wear-resistant spraying-free polycarbonate material is 0.1-0.5 part by weight;
preferably, the antioxidant comprises phosphite antioxidants;
preferably, the phosphite antioxidant includes antioxidant 168.
7. The wear resistant, spray free polycarbonate material of any of claims 1-6, further comprising a lubricant therein;
preferably, the content of the lubricant in the wear-resistant spraying-free polycarbonate material is 0.1-1 weight part;
preferably, the lubricant comprises any one or a combination of at least two of pentaerythritol stearate, polydimethylsiloxane or ethylene bis-stearamide.
8. A method of preparing the abrasion-resistant spray-free polycarbonate material of any one of claims 1 to 7, comprising: and mixing the first polycarbonate resin, the second polycarbonate resin, the wear-resistant agent, the toughening agent, the optional antioxidant and the optional lubricant, and extruding to obtain the wear-resistant spraying-free polycarbonate material.
9. The method of claim 8, wherein the extruding is performed in a twin screw extruder;
preferably, the temperature of the twin-screw extruder is 200-260 ℃.
10. Use of the abrasion-resistant spray-free polycarbonate material according to any one of claims 1 to 7 as a material for automotive interiors and exteriors, communication equipment or electronic appliances.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311688811.0A CN117659665A (en) | 2023-12-11 | 2023-12-11 | Wear-resistant spraying-free polycarbonate material and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311688811.0A CN117659665A (en) | 2023-12-11 | 2023-12-11 | Wear-resistant spraying-free polycarbonate material and preparation method and application thereof |
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