CN109111868A - A kind of ultralow dyestripping voltage polyurethane protective film and preparation method thereof - Google Patents
A kind of ultralow dyestripping voltage polyurethane protective film and preparation method thereof Download PDFInfo
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- CN109111868A CN109111868A CN201810776826.5A CN201810776826A CN109111868A CN 109111868 A CN109111868 A CN 109111868A CN 201810776826 A CN201810776826 A CN 201810776826A CN 109111868 A CN109111868 A CN 109111868A
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- polyurethane
- protective film
- ultralow
- antistatic
- layer
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- 239000004814 polyurethane Substances 0.000 title claims abstract description 102
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 102
- 230000001681 protective effect Effects 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims description 15
- 239000010410 layer Substances 0.000 claims abstract description 36
- 239000002216 antistatic agent Substances 0.000 claims abstract description 27
- 239000012790 adhesive layer Substances 0.000 claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 239000000654 additive Substances 0.000 claims abstract description 16
- 230000000996 additive effect Effects 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 4
- -1 Aliphatic isocyanates Chemical class 0.000 claims description 10
- 239000012948 isocyanate Substances 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 8
- RDBMUARQWLPMNW-UHFFFAOYSA-N phosphanylmethanol Chemical compound OCP RDBMUARQWLPMNW-UHFFFAOYSA-N 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 210000002469 basement membrane Anatomy 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 3
- 230000006698 induction Effects 0.000 abstract description 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 21
- 239000004821 Contact adhesive Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 210000004379 membrane Anatomy 0.000 description 7
- 239000012528 membrane Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- MEYZYGMYMLNUHJ-UHFFFAOYSA-N tunicamycin Natural products CC(C)CCCCCCCCCC=CC(=O)NC1C(O)C(O)C(CC(O)C2OC(C(O)C2O)N3C=CC(=O)NC3=O)OC1OC4OC(CO)C(O)C(O)C4NC(=O)C MEYZYGMYMLNUHJ-UHFFFAOYSA-N 0.000 description 5
- 239000011521 glass Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- VAFVFEZXJXCCEN-UHFFFAOYSA-N OC[S] Chemical compound OC[S] VAFVFEZXJXCCEN-UHFFFAOYSA-N 0.000 description 1
- IVJRHZRBNOWCHU-UHFFFAOYSA-N [P].COS(O)(=O)=O Chemical compound [P].COS(O)(=O)=O IVJRHZRBNOWCHU-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- BEUKRGSOWSZCQH-UHFFFAOYSA-N hydroxymethyl hydrogen sulfate Chemical compound OCOS(O)(=O)=O BEUKRGSOWSZCQH-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
- C09J7/401—Adhesives in the form of films or foils characterised by release liners characterised by the release coating composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/314—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive layer and/or the carrier being conductive
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/005—Presence of polyester in the release coating
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a kind of ultralow dyestripping voltage polyurethane protective films; it is disposed with the antistatic pet layer of inner additive type, polyurethane electrostatic resistance adhesive layer and PET anti-static release film layer from top to bottom; the surface and inside of the antistatic pet layer of inner additive type are provided with identical impedance; the polyurethane electrostatic resistance adhesive layer is by polyurethane; curing agent and antistatic agent composition, the mass ratio of three kinds of substances are polyurethane: curing agent: antistatic agent=70:5:0.1 ~ 70:12:4.Excessively high voltage is generated in dyestripping to touch screen induction device breakdown and destruction can be effectively prevent using ultralow dyestripping voltage polyurethane protective film of the invention.Polyurethane electrostatic resistance adhesive layer compact internal structure in protective film of the invention is easy to the dispersion of antistatic agent molecule and the release of electrostatic, and will not cause the precipitation of antistatic agent in the environment of high temperature and humidity.
Description
Technical field
The present invention relates to protection technical field of membrane, more particularly to a kind of ultralow dyestripping voltage polyurethane protective film and its system
Preparation Method.
Background technique
Since polyurethane series protective film has exhaust fastly relative to acrylic protective film, has ring relative to silicone protective film
The characteristics of guarantor, polyurethane protective film is used in touch screen processing procedure and shipment in recent years.There is touching behind the TP glass of display screen
Mould group is controlled, the susceptibility of the touch-control sensor of different manufacturers is different, and dyestripping electrostatic crosses conference breakdown touch-control sensor.Therefore terminal
Cell phone manufacturer (such as Huawei) proposes the requirement (most standard < 500V) of protective film dyestripping voltage.But the glass of different manufacturers
Glass cover board formula is not quite similar, and it is very big that identical protective film is bonded different cover board dyestripping voltage differences, therefore releases a general
The ultralow dyestripping voltage protection film of type has significance in display industry.The existing antistatic protection for touch screen processing
The structure of film is from top to bottom successively are as follows: outer spreading type Antistatic protective film, antistatic glue layer and release film layer, due to outer spreading type
The membrane body built-in electrical insulation of Antistatic protective film, impedance value are typically larger than 1012Ohm, thus, carry out film take off from when, can not conduct
Electrostatic, often making dyestripping voltage is more than 1000V, thus easily causes the destruction to inductor.In addition, in order to reduce protection
Film removes voltage and would generally add antistatic agent in protective film, but excessive antistatic agent or unreasonable membrane material are matched
Than will cause the problem of antistatic agent is precipitated and pollutes screen.
Summary of the invention
The present invention solves the technical problem of: one, existing Antistatic protective film for touch screen processing only have
There is antistatic effect on surface layer, and membrane body internal driving is still very high, the undesirable problem of antistatic effect；Two, polyurethane protective film
In antistatic agent be easy to be precipitated in the environment of high temperature and humidity and the problem of pollute screen.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: the present invention provides a kind of ultralow dyestripping electricity
Press polyurethane protective film, be disposed with from top to bottom: the antistatic pet layer of inner additive type, polyurethane electrostatic resistance adhesive layer and
PET anti-static release film layer, the surface and inside of the antistatic pet layer of inner additive type are provided with identical impedance, described poly-
The antistatic adhesive layer of urethane is made of polyurethane, curing agent and antistatic agent.
Preferably, the impedance on the surface and inside of the antistatic pet layer of inner additive type is 1010Ohm.
Preferably, the polyurethane electrostatic resistance adhesive layer is by polyurethane, curing agent and antistatic agent composition, three kinds of substances
Mass ratio is polyurethane: curing agent: antistatic agent=70:5:0.1 ~ 70:12:4.
Preferably, the molecular weight of the polyurethane is 6000D-20000 D.
Preferably, the molecular weight of the polyurethane is 9000-11000D.
Preferably, the curing agent is aliphatic isocyanates.
Preferably, the antistatic agent is ionic anti-static agent.
Preferably, the antistatic agent is tetrakis hydroxymetyl phosphonium sulfuric.
Preferably, the PET anti-static release film layer sets gradually organic silicon layer from top to bottom, antistatic coating and
PET basement membrane, the organosilicon oil reservoir are set to polyurethane electrostatic resistance adhesive layer lower part.
The present invention also provides a kind of preparation method of ultralow dyestripping voltage polyurethane protective film, this method includes following step
It is rapid:
(1) polyurethane, curing agent and antistatic agent are mixed evenly with organic solvent, adhesive mixed liquor is made；
(2) the obtained adhesive for polyurethane mixed liquor of step 1) is coated in the corona surface of the antistatic pet layer of inner additive type；
(3) the polyurethane glue surface for obtaining step 2 and PET anti-static release film layer are compound, are placed in 60 DEG C and cure 72 hours.
The beneficial effects of the present invention are: ultralow dyestripping voltage polyurethane protective film and preparation method thereof of the invention, utilizes
The antistatic pet layer of inner additive type, so that the impedance of the surface of antistatic pet layer and inside is conducive to all in reduced levels
The release of electrostatic, thus will not generate when the protective film to touch screen removes and excessively high to remove voltage.It is of the invention ultralow to tear
The polyurethane electrostatic resistance adhesive layer of membrane voltage polyurethane protective film selects polyurethane-aliphatic isocyanates-tetra methylol sulfuric acid
The component of phosphorus is arranged in pairs or groups, so that the crosslink density of polyurethane adhesive layer is high, thus is formd even closer reticular structure, is easy to anti-
The dispersion of electrostatic agent molecule and the release of electrostatic, and not will cause the precipitation of antistatic agent, it avoids after film removes to screen
Pollution.It thus can effectively prevent generating in dyestripping using ultralow dyestripping voltage polyurethane protective film of the invention excessively high
Breakdown and destruction of the voltage to touch screen induction device.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is each schematic diagram of a layer structure of ultralow dyestripping voltage polyurethane protective film of the invention.
Specific embodiment
The present invention is further elaborated combined with specific embodiments below.It should be understood that tool described herein
Body embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention provides a kind of ultralow dyestripping voltage polyurethane protective film, is disposed with from top to bottom: inner additive type
Antistatic pet layer 1, polyurethane electrostatic resistance adhesive layer 2 and PET anti-static release film layer 3, the antistatic pet layer 1 of inner additive type
Surface and inside be provided with identical impedance, the polyurethane electrostatic resistance adhesive layer 2 is by polyurethane, curing agent and antistatic agent
Composition.
The impedance on the surface and inside of the antistatic pet layer 1 of inner additive type is 1010Ohm.
The polyurethane electrostatic resistance adhesive layer 2 is by polyurethane, curing agent and antistatic agent composition, the mass ratio of three kinds of substances
For polyurethane: curing agent: antistatic agent=70:5:0.1 ~ 70:12:4.
The molecular weight of the polyurethane is 6000D-20000 D, and preferred molecular weight is the macromolecule of 9000D-11000D
And the polyurethane with preferable cohesive force.The curing agent is aliphatic isocyanates, and the antistatic agent is tetra methylol sulphur
Sour phosphorus, this component is arranged in pairs or groups so that the crosslink density of polyurethane adhesive layer is high, thus forms even closer reticular structure, easily
In the dispersion of antistatic agent molecule and the release of electrostatic, and without precipitation risk after tropical deterioration.
The PET anti-static release film layer 3 sets gradually organic silicon layer 31, antistatic coating 32 and PET from top to bottom
Basement membrane 33, the organosilicon oil reservoir 31 are set to 2 lower part of polyurethane electrostatic resistance adhesive layer.
The preparation method of ultralow dyestripping voltage polyurethane protective film of the invention, this method comprises the following steps:
(1) polyurethane, curing agent and antistatic agent are mixed evenly in organic solvent, adhesive for polyurethane mixing is made
Liquid；
(2) in the corona surface application step 1 of the antistatic pet layer of inner additive type) obtained adhesive for polyurethane mixed liquor；
(3) the antistatic adhesive layer for obtaining step (2) and PET anti-static release film layer are compound, are placed in 60 DEG C and cure 72 hours.
The method of evaluating performance of ultralow dyestripping voltage polyurethane protective film of the invention are as follows: in temperature be 23 DEG C, humidity is
Glue surface impedance value is measured under conditions of 55%, release film tears voltage between moment glue surface release film and protective film removes dynamic
Dyestripping voltage, the voltage value of measurement are the maximum electrostatic pressure in removing, material peeling rate > 20cm/s.Meanwhile to protection
Stability of the film under hot and humid environment is investigated, and is 60 DEG C in temperature, and relative humidity investigates 72h under conditions of being 90%,
The degree of fouling for removing rear screen to protective film carries out range estimation judge.
To further illustrate the contents of the present invention, now enumerates embodiment 1-6 and comparative example is illustrated.
Embodiment 1: the formula components and its content of the polyurethane electrostatic resistance adhesive layer of the present embodiment are as follows: polyurethane contact adhesive
(70%) 100g, 7 g of aliphatic HDI trimer isocyanates, tetrakis hydroxymetyl phosphonium sulfuric 0.1 g, ethyl acetate 80g.This implementation
Example ultralow dyestripping voltage polyurethane protective film include set gradually from top to bottom it is antistatic with a thickness of 50 μm of inner additive type
(two-sided impedance is 10 to pet layer10Ohm), (impedance 10 of polyurethane electrostatic resistance adhesive layer9Ohm) and with a thickness of 50 μm of PET
(the antistatic impedance 10 in silicone oil face of Anti-static release liner layer9Ohm).
The preparation method of the ultralow dyestripping voltage polyurethane protective film of the present embodiment includes the following steps:
(1) by the polyurethane contact adhesive 100g of solid content 70%, aliphatic HDI trimer isocyanate curing agent 7g, four hydroxyls are added
Methylsulfuric acid phosphorus 3g, is mixed evenly with 80g ethyl acetate, and adhesive mixed liquor is made；
(2) the antistatic PET corona surface of interior addition at 50 μm is coated with 15 μm of adhesive for polyurethane mixed liquors；
(3) by the polyurethane glue surface of step S2 and PET Anti-static release liner (off-type force 20-30g/inch, remaining rate > 85%)
Silicone oil face is compound.60 DEG C are placed in cure 72 hours.
Embodiment 2: the formula components and its content of the polyurethane electrostatic resistance adhesive layer of the present embodiment are as follows: polyurethane contact adhesive
(70%) 100g, 7 g of aliphatic HDI trimer isocyanates, tetrakis hydroxymetyl phosphonium sulfuric 1.5 g, ethyl acetate 80g.This implementation
The set-up mode of each tunic of the ultralow dyestripping voltage polyurethane protective film of example is same as Example 1.The ultralow of the present embodiment is torn
The preparation method is the same as that of Example 1 for membrane voltage polyurethane protective film.
Embodiment 3: the formula components and its content of the polyurethane electrostatic resistance adhesive layer of the present embodiment are as follows: polyurethane contact adhesive
(70%) 100g, 7 g of aliphatic HDI trimer isocyanates, tetrakis hydroxymetyl phosphonium sulfuric 3 g, ethyl acetate 80g.The present embodiment
Ultralow dyestripping voltage polyurethane protective film each tunic set-up mode it is same as Example 1.The ultralow dyestripping of the present embodiment
The preparation method is the same as that of Example 1 for voltage polyurethane protective film.
Embodiment 4: the formula components and its content of the polyurethane electrostatic resistance adhesive layer of the present embodiment are as follows: polyurethane contact adhesive
(70%) 100g, 7 g of aliphatic HDI trimer isocyanates, tetrakis hydroxymetyl phosphonium sulfuric 4 g, ethyl acetate 80g.The present embodiment
Ultralow dyestripping voltage polyurethane protective film each tunic set-up mode it is same as Example 1.The ultralow dyestripping of the present embodiment
The preparation method is the same as that of Example 1 for voltage polyurethane protective film.
Embodiment 5: the formula components and its content of the polyurethane electrostatic resistance adhesive layer of the present embodiment are as follows: polyurethane contact adhesive
(70%) 100g, 5 g of aliphatic HDI trimer isocyanates, tetrakis hydroxymetyl phosphonium sulfuric 3 g, ethyl acetate 80g.The present embodiment
Ultralow dyestripping voltage polyurethane protective film each tunic set-up mode it is same as Example 1.The ultralow dyestripping of the present embodiment
The preparation method is the same as that of Example 1 for voltage polyurethane protective film.
Embodiment 6: the formula components and its content of the polyurethane electrostatic resistance adhesive layer of the present embodiment are as follows: polyurethane contact adhesive
(70%) 100g, 12 g of aliphatic HDI trimer isocyanates, tetrakis hydroxymetyl phosphonium sulfuric 3 g, ethyl acetate 80g.This implementation
The set-up mode of each tunic of the ultralow dyestripping voltage polyurethane protective film of example is same as Example 1.The ultralow of the present embodiment is torn
The preparation method is the same as that of Example 1 for membrane voltage polyurethane protective film.
Comparative example: the formula components and its content of the polyurethane electrostatic resistance adhesive layer of the present embodiment are same as Example 3.This
The difference of embodiment and embodiment 3 is that top layer's setting of polyurethane protective film is the two-sided antistatic pet layer of outer application type,
Its two-sided impedance is 1010Ohm.The preparation method of the ultralow dyestripping voltage polyurethane protective film of the present embodiment is the same as embodiment 3.
Embodiment 1-6 and the formula components table of comparative example are referring to table 1.
1 embodiment 1-6 of table and comparative formulation component list
Result such as 2 institute of table of performance measurement is carried out to the polyurethane protective film of the formula components preparation of embodiment 1-6 and comparative example
Show.
The polyurethane protective film performance evaluation result of 2 embodiment 1-6 of table and comparative example
| Embodiment number | Glue surface impedance value (ohm) | Release film tears the voltage (V) between moment glue surface and release film | Protective film removes dynamic dyestripping voltage (V) | Appearance |
| Embodiment 1 | 1010 | 49 | 380 | ○ |
| Embodiment 2 | 109.8 | 36 | 230 | ○ |
| Embodiment 3 | 109.5 | 28 | 150 | ○ |
| Embodiment 4 | 109.2 | 22 | 102 | △ |
| Embodiment 5 | 109.5 | 30 | 121 | △ |
| Embodiment 6 | 109.6 | 35 | 92 | ○ |
| Comparative example | 109.5 | 1260 | 689 | ○ |
"×" indicates obvious white haze, more serious residue glue；" △ " indicates slight white haze, and colloid has residual risk；"○" indicates to protect
Cuticula is pollution-free with screen.
Compared with reference examples, film removes voltage and is substantially reduced polyurethane protective film in each embodiment of the invention, and
Study on the stability of the protective film through high temperature and humidity is precipitated without obvious.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (10)
1. a kind of ultralow dyestripping voltage polyurethane protective film, which is characterized in that be disposed with from top to bottom: inner additive type resists quiet
Electric pet layer, polyurethane electrostatic resistance adhesive layer and PET anti-static release film layer, the surface of the antistatic pet layer of inner additive type and
Inside is provided with identical impedance.
2. a kind of ultralow dyestripping voltage polyurethane protective film according to claim 1, which is characterized in that the inner additive type
The impedance on the surface and inside of antistatic pet layer is 1010Ohm.
3. a kind of ultralow dyestripping voltage polyurethane protective film according to claim 2, which is characterized in that the polyurethane is anti-
For electrostatic adhesive layer by polyurethane, curing agent and antistatic agent composition, the mass ratio of three kinds of substances is polyurethane: curing agent: being resisted quiet
Electric agent=70:5:0.1 ~ 70:12:4.
4. a kind of ultralow dyestripping voltage polyurethane protective film according to claim 3, which is characterized in that the polyurethane
Molecular weight is 6000D-20000 D.
5. a kind of ultralow dyestripping voltage polyurethane protective film according to claim 3, which is characterized in that the polyurethane
Molecular weight is 9000-11000D.
6. a kind of ultralow dyestripping voltage polyurethane protective film according to claim 3, which is characterized in that the curing agent is
Aliphatic isocyanates.
7. a kind of ultralow dyestripping voltage polyurethane protective film according to claim 3, which is characterized in that the antistatic agent
For ionic anti-static agent.
8. a kind of ultralow dyestripping voltage polyurethane protective film according to claim 7, which is characterized in that the antistatic agent
For tetrakis hydroxymetyl phosphonium sulfuric.
9. a kind of ultralow dyestripping voltage polyurethane protective film described in any one of -8 claims according to claim 1,
It being characterized in that, the PET anti-static release film layer sets gradually organic silicon layer, antistatic coating and PET basement membrane from top to bottom,
The organosilicon oil reservoir is set to polyurethane electrostatic resistance adhesive layer lower part.
10. the preparation method of ultralow dyestripping voltage polyurethane protective film according to claim 1, which is characterized in that including
Following steps:
(1) polyurethane, curing agent and antistatic agent are mixed evenly, adhesive mixed liquor is made；
(2) in the obtained adhesive for polyurethane mixed liquor of corona surface application step (1) of the antistatic pet layer of inner additive type；
(3) the polyurethane glue surface for obtaining step (2) and PET anti-static release film layer are compound, are placed in 60 DEG C and cure 72 hours.
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| CN201810776826.5A CN109111868A (en) | 2018-07-16 | 2018-07-16 | A kind of ultralow dyestripping voltage polyurethane protective film and preparation method thereof |
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| CN201810776826.5A CN109111868A (en) | 2018-07-16 | 2018-07-16 | A kind of ultralow dyestripping voltage polyurethane protective film and preparation method thereof |
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| CN114874709A (en) * | 2022-05-31 | 2022-08-09 | 惠州市浩明科技股份有限公司 | Polyurethane protective film with low film tearing voltage |
| CN114891472A (en) * | 2022-05-16 | 2022-08-12 | 宁波惠之星新材料科技有限公司 | Polyurethane adhesive, polyurethane protective film and preparation method |
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