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WO2013129759A1 - Film étanche aux poussières - Google Patents

Film étanche aux poussières Download PDF

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Publication number
WO2013129759A1
WO2013129759A1 PCT/KR2012/010415 KR2012010415W WO2013129759A1 WO 2013129759 A1 WO2013129759 A1 WO 2013129759A1 KR 2012010415 W KR2012010415 W KR 2012010415W WO 2013129759 A1 WO2013129759 A1 WO 2013129759A1
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WIPO (PCT)
Prior art keywords
weight
film
density polyethylene
prevention film
polyolefin
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Ceased
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PCT/KR2012/010415
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English (en)
Korean (ko)
Inventor
남형호
전재동
최종현
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DAE MYUNG CHEMICAL Corp
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DAE MYUNG CHEMICAL Corp
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Publication of WO2013129759A1 publication Critical patent/WO2013129759A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Ethene-propene or ethene-propene-diene copolymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene

Definitions

  • the present invention relates to a fallout prevention film used for automobile coating protection. More specifically, the present invention relates to a fallout prevention film including a polyethylene-based resin and a specific polyolefin-based elastomer, having excellent moisture permeability, air permeability, excellent flexibility, no scratch, and no adhesion to an automotive coating.
  • Wrap guard film is made of polypropylene and
  • the wrap guard film it is a product that requires precise work so that wrinkles or bubbles are not generated.
  • wrinkles or bubbles occur, water droplets are generated due to moisture inside, leaving debris on the surface of the vehicle.
  • the attachment state is maintained for a long time, the oxidation proceeds, there has been a problem that the trace on the surface of the vehicle also occurs.
  • Tyvek is a woven film made by DuPont High Density Polyethylene, which has strong strength, little change in physical properties, resists lift, and is woven. Many are known to have advantages such as easy evaporation of moisture. Tyvek has been found to be useful in a variety of applications that take advantage of a well-combined combination of strength, tear resistance and permeability of the sheet as a spunbond fibrous sheet made of multiple flexifilment strands of oriented polyethylene film fibrils. .
  • Tyvek which is currently on the market, is expensive, has a lot of dust adsorbed through the body through the hole, the fabric itself is stiff and difficult to work when covering the vehicle, and there is also a disadvantage that the scratch is generated.
  • (2010.05.26) includes (a) 10-30 wt% of linear low density polyethylene resin, (b) 20-35 wt% of medium density polyethylene resin, and (c) 45-55 wt% of calcium carbonate. To provide a fall prevention film excellent breathability. However, there is a need for a fall prevention film that is more flexible from the user and has less detachment of calcium carbonate.
  • An object of the present invention is to provide a fallout prevention film which is more excellent in flexibility than the conventionally developed fallout prevention film and has less detachment of inorganic particles.
  • the present invention is a low-density polyethylene 4 to 15% by weight, medium-density polyethylene 30 to 45% by weight and high density polyethylene 4 to 8% by weight, polyolefin-based elastomer 3 to 20% by weight, inorganic filler 40 to 55% by weight of the inorganic filler It is about.
  • the present invention also relates to a fall prevention film further comprising 1 to 10% by weight of a surfactant masterbatch including 20 to 40% by weight of surfactant and 60 to 80% by weight of low density polyethylene.
  • the present invention also relates to a fallout prevention film further comprising 1 to 10% by weight of an ionomer or stearic acid selected from a copolymer of ethylene and methacrylic acid, a copolymer of ethylene and acrylic acid.
  • Fallout prevention film according to the present invention is very excellent in flexibility, there is no detachment of the inorganic particles does not occur there is a very excellent effect that there is no problem, such as inorganic particles are attached to the car paint film or scratches when attached to the car paint film. .
  • the fall prevention film according to the present invention is excellent in moisture permeability and air permeability, there is no change in color or physical properties due to outdoor exposure and can provide a polyethylene film for protecting the automotive film with low stickiness or low friction, and excellent mechanical strength, soft It is possible to provide a fall prevention film having elastic properties.
  • the present invention can provide a film for the purpose of preventing contamination of the coating surface of the vehicle or scratching the coating surface during the transportation of the new vehicle.
  • Example 1 is a FE-SEM (1000 times) photograph of a film according to Example 1 of the present invention.
  • Example 2 is a photograph when the film according to Example 1 of the present invention is attached to an automobile paint film and then removed again.
  • Example 3 is a FE-SEM (1000 times) photograph of the film according to Example 7 of the present invention.
  • Example 7 of the present invention is attached to the automobile coating film and then removed again.
  • the present invention comprises 4 to 15% by weight of low density polyethylene, 30 to 45% by weight of medium density polyethylene and 4 to 8% by weight of high density polyethylene, 3 to 20% by weight of polyolefin elastomer, 40 to 55% by weight of inorganic filler, and the fallout
  • the prevention film further comprises 1 to 10% by weight of a surfactant masterbatch comprising 20 to 40% by weight of surfactant and 60 to 80% by weight of low density polyethylene, a copolymer of ethylene and methacrylic acid, a copolymer of ethylene and acrylic acid It relates to an anti-fallout film further comprising 1 to 10% by weight of ionomer or stearic acid selected from.
  • the first aspect of the present invention comprises 4 to 15% by weight of low density polyethylene, 30 to 45% by weight of medium density polyethylene and 4 to 8% by weight of high density polyethylene, 3 to 20% by weight of polyolefin elastomer, 40 to 55% by weight of inorganic filler do.
  • the second aspect of the present invention is 4 to 15% by weight of low density polyethylene, 30 to 45% by weight of medium density polyethylene and 4 to 8% by weight of high density polyethylene, 3 to 20% by weight of polyolefin elastomer, 40 to 55% by weight of inorganic filler and interface Activator masterbatch comprises 1 to 10% by weight.
  • the surfactant masterbatch includes 20 to 40 wt% of surfactant and 60 to 80 wt% of low density polyethylene.
  • the third aspect of the present invention is 4 to 15% by weight of low density polyethylene, 30 to 45% by weight of medium density polyethylene and 4 to 8% by weight of high density polyethylene, 3 to 20% by weight of polyolefin elastomer, 40 to 55% by weight of inorganic filler and ethylene 1 to 10% by weight of an ionomer or stearic acid selected from a copolymer of methacrylic acid, a copolymer of ethylene and acrylic acid.
  • the fourth aspect of the present invention is 4 to 15% by weight of low density polyethylene, 30 to 45% by weight of medium density polyethylene and 4 to 8% by weight of high density polyethylene, 3 to 20% by weight of polyolefin elastomer, 40 to 55% by weight of inorganic filler, interface
  • the activator masterbatch comprises 1 to 10% by weight and 1 to 10% by weight of an ionomer or stearic acid selected from a copolymer of ethylene and methacrylic acid, a copolymer of ethylene and acrylic acid.
  • the surfactant masterbatch includes 20 to 40 wt% of surfactant and 60 to 80 wt% of low density polyethylene.
  • the said 1st-4th aspect is an aspect for demonstrating this invention, It is not limited to these.
  • the low-density polyethylene is preferably used to provide flexibility and improve productivity, so that the low-density polyethylene can be used in the range of 4 to 15% by weight to satisfy the desired physical properties. More preferably 6 to 8% by weight is used. If the amount is less than 4% by weight, the workability is lowered and productivity is lowered. If it is used more than 15% by weight, the physical properties are reduced and the characteristics of the product cannot be realized.
  • the melt index is 7.0 to 14.0 g / 10 min (190 ° C., 2.16 kg)
  • the density is 0.915 to 0.920, and more preferably the melt index is 7.5 to 7.7 g / 10 min (190 ° C., 2.16 kg), and the density is
  • the use of 0.917 to 0.919 can produce a film free of mechanical properties, physical properties such as deterioration due to ultraviolet rays, and the like.
  • Commercialized examples of such low-density polyethylene include, but are not limited to, Grade 955 of Hanwha Chemical.
  • the medium density polyethylene is used to impart mechanical properties of the film, and 30 to 45% by weight, more preferably 35 to 40% by weight is used.
  • 30 to 45% by weight more preferably 35 to 40% by weight is used.
  • the mechanical properties can be improved by using a melt index in the range of 2.0 to 5.0 g / 10 min (190 ° C, 2.16 kg) and a density of 0.928 to 0.936, and more preferably, the melt index is 3.0 to
  • a melt index in the range of 2.0 to 5.0 g / 10 min (190 ° C, 2.16 kg) and a density of 0.928 to 0.936, and more preferably, the melt index is 3.0 to
  • the use of 5.0g / 10min (190 ° C, 2.16kg) and density ranges from 0.930 to 0.932 can produce a film with little change in color and physical properties due to outdoor exposure and without desorption of the target inorganic particles. have.
  • Commercialized examples of such medium-density polyethylene include SK General Chemical's RG300U, FT-811, and the like, but are not limited thereto.
  • the high density polyethylene is used to improve the strength of the film, the content of which can achieve the above object in the range of 4 to 8% by weight, more preferably 5 to 7% by weight. If it is used at 4 wt% or less, the target strength cannot be achieved, and if it is used at 8 wt% or more, it becomes too stiff so that
  • the melt index can express the film strength required by the product in the range of 6.0 ⁇ 8.5g / 10min (190 °C, 2.16kg), density is 0.960 ⁇ 0.965, more preferably the melt index is 7.0 ⁇ 8.5g / 10min (190 °C, 2.16kg), the density is in the range of 0.962 ⁇ 0.963 is good to use.
  • Commercialized examples of such high-density polyethylene include, but are not limited to, JH910 of SK Global Chemical.
  • the polyolefin-based elastomer is used to prevent desorption of inorganic particles and to increase flexibility
  • the content of the polyolefin-based elastomer may be 3 to 20% by weight, more preferably 5 to 10% by weight.
  • the content of the polyolefin-based elastomer may be 3 to 20% by weight, more preferably 5 to 10% by weight.
  • the flexibility may be too high and the strength may be lowered.
  • Tm melting temperature
  • the polyolefin elastomer may be a polymer elastomer of ethylene polymerized using a metallocene catalyst and an alpha-olefin of (C3 to C15) and a non-covalent diene monomer, and a melt index of 0.9 to 1.1 g / 10 min ( 190 ° C., 2.16 kg), and having a density of 0.870 to 0.908 is preferred because of its excellent flexibility and prevention of separation of inorganic particles.
  • Commercialized examples of such polyolefin elastomers include Dow
  • the inorganic filler is used to impart breathability and moisture permeability by forming a breathable hole in the stretching process during film production, it can be used both coated or uncoated.
  • the air permeability is improved, and when the coated inorganic filler is used, the workability is excellent and the mechanical properties of the film are excellent.
  • the inorganic filler has an average particle diameter of 1.5 to 4.0 ⁇ m, more preferably 2.0 to
  • Using a size of 3.0 mu m can produce an excellent breathable film without compromising the physical properties of the film. If the average particle diameter is less than 1.5 ⁇ m, good air permeability may not be obtained. If the average particle diameter is larger than 4.0 ⁇ m, tearing, pore formation, and strength decrease may occur during the film manufacturing process.
  • the content of 40 to 55% by weight it is preferable to use the content of 40 to 55% by weight, and can express the desired moisture permeability and breathability in the above range.
  • the present invention can add a surfactant masterbatch as needed to reduce contact with the vehicle surface to give antistatic properties, it is possible to reduce the release of inorganic particles generated in the film.
  • a surfactant masterbatch comprises 20 to 40 wt% of surfactant and 60 to 80 wt% of low density polyethylene.
  • the surfactant may be used as long as it is a general surfactant, in particular, glycerin fatty acid ester (Glycerin Fatty Acid Ester), fatty amine salts (Fatty Amine) is preferably used alone or in combination, when used in combination 1 ⁇ 99: 99 ⁇ 1 can be used by mixing in the weight ratio.
  • glycerin fatty acid ester Glycerin Fatty Acid Ester
  • fatty amine salts Fatty Amine
  • the low density polyethylene may be the same as the low density polyethylene described above, or may be used.
  • the masterbatch may be prepared by compounding 20 to 40% by weight of surfactant and 60 to 80% by weight of low density polyethylene, and specifically, prepared by compounding at a pressure of 40 to 60 Bar at a temperature of 150 to 210 ° C. It is preferable.
  • the content of the surfactant masterbatch may be used in the range of 1 to 10% by weight, more preferably 4 to 8% by weight. It is excellent in the effect which prevents detachment of the target inorganic particle in the said range, and prevents contact with the automobile coating film.
  • the present invention may further comprise 1 to 10% by weight of ionomer, if necessary.
  • the ionomer is a copolymer obtained by ion-crosslinking ethylene and methacrylic acid, acrylic acid and ethylene with metal ions, and the melt index is preferably in the range of 0.1 to 10 g / 10 min (190 ° C., 2,160 g).
  • Ionomers can be used to produce films having mechanical strength and soft elasticity.
  • the addition of the ionomer is preferable because the dispersibility of calcium carbonate can be further improved. If the amount is less than 1% by weight, the effect is insignificant, and if it is used more than 10% by weight, the price increases, which is not preferable.
  • stearic acid or a salt thereof may be further used to improve the kneading property of the polyethylene resin and the inorganic filler and to improve the kneading property with other additives.
  • stearic acid or a salt thereof may be further used to improve the kneading property of the polyethylene resin and the inorganic filler and to improve the kneading property with other additives.
  • the film of the present invention may add at least one additive component selected from white pigments, UV stabilizers, antioxidants, ultraviolet absorbers, wetting agents, fragrances and lubricants conventionally used in the film, unless otherwise noted. It is desirable that the amount used does not exceed 7% by weight of the total content. More preferably 3 to
  • LDPE-1 Hanwha Chemical, Grade 955 (hereinafter referred to as LDPE-1) having a melt index of 7.7 g / 10 min (190 ° C., 2.16 kg) and a density of 0.919, was used.
  • MDPE-1 medium density polyethylene
  • MDPE-1 SK General Chemical's RG300U having a melt index of 5.0 g / 10 min (190 ° C., 2.16 kg) and a density of 0.930 was used.
  • HDPE-1 SK General Chemical's JH910 having a melt index of 8.5 g / 10 min (190 ° C., 2.16 kg) and a density of 0.962 was used.
  • Engage 8100 (hereinafter referred to as POE-1) manufactured by Dow Chemical Co., Ltd., having a melt index of 1.0 g / 10 min (190 ° C., 2.16 kg) and a density of 0.870, was used as a polyolefin elastomer.
  • Inorganic filler was used calcium carbonate (average particle size 1.5 ⁇ m, Yabashi Korea, YK-1C) coated with stearic acid.
  • LDPE-1 low density polyethylene
  • MDPE-1 medium density polyethylene
  • HDPE-1 high density polyethylene
  • POE-1 polyolefin-based elastomer
  • the pellets were melted at 240 ° C. in a T-die extruder to be formed into a film, and the film was preheated to 60 ° C. and stretched 1.5 times in the longitudinal direction between the drawing rollers in a longitudinal direction of 100 g / m 2.
  • a phosphor film was obtained.
  • the physical properties of the prepared film were measured and shown in Table 1 below. In addition, the surface of the produced film is 1000 times using FE-SEM
  • FIG. 1 The enlarged photograph is shown in FIG. As shown in FIG. 1, the pore size was small and uniform, and the surface was smooth.
  • Example 11 Example 12 LDPE-1 4 6 4 5 4 4 MDPE-1 30 30 30 40 40 38 HDPE-1 4 4 6 5 6 8 POE-1 10 15 20 10 10 10 10 Calcium carbonate 52 45 40 40 40 40 total 100 100 100 100 100 100 100 100 100 Tensile Strength (N / 25mm) MD 31 27 27 29 30 31 TD 15 15 16 17 17 17 % Elongation MD 179 191 217 188 182 176 TD 196 221 236 205 201 194 Water vapor permeability (g / m2 ⁇ day) 1600 1300 1000 1300 1300 1300 flexibility B A A B B B scratch radish radish radish radish radish Inorganic Particle Desorption none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none
  • Example 2 The same conditions as in Example 1 except that the melt index is 1.0g / 10min (190 °C, 2.16kg), the density is 0.900 as a polyolefin elastomer using Lucene LC-100 (hereinafter referred to as POE-2) of LG Chem.
  • POE-2 Lucene LC-100
  • Table 3 The physical properties of the produced film were measured and shown in Table 3 below.
  • a photograph in which the surface of the prepared film was enlarged 1000 times using FE-SEM is shown in FIG. 3. As shown in FIG. 3, the pore size was small and uniform, and the surface was smooth.
  • Example 14 Example 15 LDPE-1 4 6 4 MDPE-1 30 30 30 HDPE-1 4 4 6 POE-2 10 15 20 Calcium carbonate 52 45 40 total 100 100 100 Tensile Strength (N / 25mm) MD 31 27 27 TD 15 15 16 % Elongation MD 176 190 215 TD 194 218 232 Water vapor permeability (g / m2 ⁇ day) 1700 1400 1100 flexibility B A A scratch radish radish radish Inorganic Particle Desorption none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none
  • LDPE-1 low density polyethylene
  • a film was prepared in the same manner as in Example 1, except that the masterbatch was used in the content of Table 4 below.
  • the physical properties of the prepared film were measured and shown in Table 4 below.
  • Surlyn 1601 manufactured by DuPont with a melt index of 1.3 g / 10 min (190 ° C., 2.16 Kg) and a density of 0.940 g / cm 3 was used.
  • a film was prepared in the same manner as in Example 1, except that the ionomer was used in the following Table 4.
  • the physical properties of the prepared film were measured and shown in Table 4 below.
  • Example 17 Example 18
  • Example 19 LDPE-1 4 4 4 MDPE-1 30 30 31 30 HDPE-1 8 8 7 7 POE-1 3 3 3 3 3 3 Calcium carbonate 51 47 51 48 SM / B 4 8 - - Ionomer - - 4 8 total 100 100 100 100 100 Tensile Strength (N / 25mm) MD 32 31 32 32 TD 17 17 17 16 % Elongation MD 157 168 161 165 TD 166 176 172 177 Water vapor permeability (g / m2 ⁇ day) 2100 1700 2100 2000 flexibility B B B B scratch radish radish radish radish Inorganic Particle Desorption none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none none
  • Example 1 Except for not using a polyolefin-based elastomer in Example 1
  • a film was prepared in the same manner as in Example 1.
  • the physical properties of the produced film were measured and shown in Table 5 below.
  • 5 shows a photograph in which the surface of the prepared film is enlarged 1000 times by using FE-SEM. As shown in FIG. 5, pores of non-uniform size were formed, and it was confirmed that the surface was not smooth.
  • Comparative Example 1 As shown in Table 5, in Comparative Example 1, the moisture permeability is so high that foreign matters such as dust may penetrate into the film, and desorption of inorganic particles occurs. Comparative Examples 2 to 3 also had a high moisture permeability, so that foreign matters in the dust could penetrate into the film, resulting in detachment of inorganic particles. Comparative Example 4 is poor in flexibility
  • Fallout prevention film of the present invention is very excellent in flexibility, there is no detachment of the inorganic particles does not cause any problems such as inorganic particles attached to the car paint film or scratches when attached to the car paint film is very industrially available It is a high technology.

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PCT/KR2012/010415 2012-02-27 2012-12-04 Film étanche aux poussières Ceased WO2013129759A1 (fr)

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KR1020120019429A KR101179249B1 (ko) 2012-02-27 2012-02-27 낙진방지용 필름
KR10-2012-0019429 2012-02-27

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN114702741A (zh) * 2022-03-31 2022-07-05 金发科技股份有限公司 一种低密度聚乙烯材料及其制备方法和应用

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CN109928649A (zh) * 2019-05-07 2019-06-25 陈贞辉 一种用于建筑的节能玻璃及其制备方法

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