CN115124749A - Antistatic optical release film for OCA (optical clear adhesive) and preparation method thereof - Google Patents
Antistatic optical release film for OCA (optical clear adhesive) and preparation method thereof Download PDFInfo
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- CN115124749A CN115124749A CN202210842926.XA CN202210842926A CN115124749A CN 115124749 A CN115124749 A CN 115124749A CN 202210842926 A CN202210842926 A CN 202210842926A CN 115124749 A CN115124749 A CN 115124749A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 96
- 239000000853 adhesive Substances 0.000 title claims abstract description 21
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 101
- 238000000576 coating method Methods 0.000 claims abstract description 101
- 239000002245 particle Substances 0.000 claims abstract description 79
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 239000004568 cement Substances 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims description 66
- -1 polysiloxane Polymers 0.000 claims description 66
- 229920001296 polysiloxane Polymers 0.000 claims description 66
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 64
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 51
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 49
- 229920002554 vinyl polymer Polymers 0.000 claims description 49
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 48
- 239000002518 antifoaming agent Substances 0.000 claims description 34
- 238000004873 anchoring Methods 0.000 claims description 32
- 239000003054 catalyst Substances 0.000 claims description 32
- 229910052697 platinum Inorganic materials 0.000 claims description 32
- 239000007787 solid Substances 0.000 claims description 29
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 17
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 17
- 239000007864 aqueous solution Substances 0.000 claims description 17
- 229910052739 hydrogen Inorganic materials 0.000 claims description 17
- 239000001257 hydrogen Substances 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 16
- 239000002253 acid Substances 0.000 claims description 15
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 claims description 15
- 239000011265 semifinished product Substances 0.000 claims description 12
- 229920002799 BoPET Polymers 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229920000123 polythiophene Polymers 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 125000004494 ethyl ester group Chemical group 0.000 claims 1
- 230000000873 masking effect Effects 0.000 claims 1
- 230000003068 static effect Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 78
- 230000000052 comparative effect Effects 0.000 description 8
- 239000012790 adhesive layer Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000002313 adhesive film Substances 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 101710137710 Thioesterase 1/protease 1/lysophospholipase L1 Proteins 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- C08J2465/00—Characterised by the use of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain; Derivatives of such polymers
-
- 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
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
- C08J2483/07—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
Abstract
The invention discloses an antistatic optical release film for OCA (optical clear adhesive) optical cement, which comprises a base material layer, an antistatic layer and an antistatic release layer which are arranged from bottom to top, wherein the antistatic release layer is formed by coating antistatic release coating liquid containing conductive particles, and the conductive particles comprise more than two conductive particles with different particle sizes. The antistatic release layer and the antistatic release layer with the conductive particles are arranged, so that the antistatic release film has double antistatic effects, static electricity on the film surface is primarily removed by the antistatic release layer, static voltage is further discharged by the antistatic layer for accumulation, the film tearing voltage of the release film is reduced, static electricity is prevented from being generated, the conductive particles comprise more than two types of conductive particles with different particle sizes, and the nano conductive particles with different particle sizes can be stacked more tightly, so that the conductivity is better, and the antistatic effect is better.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of release films, in particular to the technical field of antistatic optical release films.
[ background of the invention ]
An OCA (optically Clear adhesive) optical adhesive, also called an OCA optical Clear adhesive, is an optical double-sided adhesive tape formed by bonding a release film on each of the upper and lower surfaces of a substrate-free acrylic adhesive. OCA optical cement is generally used for bonding transparent optical components, such as a touch panel of a mobile phone, a lens and related components thereof. The OCA optical clear adhesive is generally classified into a thermosetting type OCA and an ultraviolet UV type OCA according to a curing manner; the optical adhesive is generally classified into acrylate OCA optical adhesive, polyurethane OCA optical adhesive, organic silicon OCA optical adhesive and the like according to the type of the adhesive.
OCA optical cement includes middle OCA optical cement layer, and OCA optical cement layer's upper surface covers has heavily from the type membrane, and OCA optical cement layer's lower surface covers has lightly from the type membrane. Generally, during preparation, the OCA optical adhesive is coated on the heavy release film, the OCA optical adhesive layer is formed on the heavy release film by curing, then the light release film is attached to the surface of the OCA optical adhesive layer, and the OCA optical adhesive layer is clamped between the heavy release film and the light release film to keep the surface of the OCA optical adhesive layer flat. When the adhesive tape is used, the light release film is peeled off, then the exposed side of the OCA optical adhesive layer is well attached to the surface needing to be bonded, then the heavy release film is peeled off, and finally another part needing to be bonded, such as a mobile phone touch panel and the like, is attached to the outer side of the OCA optical adhesive layer.
The existing release film has poor antistatic performance, and the OCA optical transparent adhesive can generate static electricity when the release film is peeled off, so that the optical adhesive is easily influenced badly.
[ summary of the invention ]
The invention aims to solve the problems in the prior art, and provides an antistatic optical release film for OCA (optical clear adhesive), which has strong antistatic capability, can well reduce the film tearing voltage and prevent the release film from generating static electricity during film tearing.
In order to achieve the purpose, the invention provides an antistatic optical release film for OCA (optical clear adhesive) optical cement, which comprises a base material layer, an antistatic layer and an antistatic release layer from bottom to top, wherein the antistatic release layer is formed by coating antistatic release coating liquid containing conductive particles.
Preferably, the conductive particles include two or more kinds of conductive particles having different particle diameters.
Preferably only, the vinyl polysiloxane is a vinyl terminated polysiloxane.
Preferably, the antistatic coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.3-0.7 part of hydrogen-containing polysiloxane, 0.1-0.3 part of anchoring agent, 0.2-0.5 part of platinum catalyst, 0.01-0.04 part of flatting agent, 0.01-0.05 part of defoaming agent and 0.01-0.03 part of conductive particles.
Preferably, the conductive particles include three kinds of spherical conductive particles having particle diameters of 50nm, 100nm, and 200nm, respectively.
Preferably, the antistatic coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.5 part of hydrogen-containing polysiloxane, 0.2 part of anchoring agent, 0.3 part of platinum catalyst, 0.02 part of flatting agent, 0.03 part of defoaming agent and 0.02 part of conductive particles, wherein the weight ratio of the three spherical conductive particles with different particle sizes is 1:1: 1.
Preferably, the spherical conductive particles are nickel powder, silver powder or copper powder.
Preferably, the spherical conductive particles are silver powder.
Preferably, the vinyl polysiloxane is polysiloxane with vinyl as an end group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-60000mPa & s; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight-average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the leveling agent is polyether modified organic siloxane leveling agent; the defoaming agent is an organic silicon defoaming agent.
Preferably, the substrate thickness is 25-200 um.
Preferably, the substrate is selected from one of PET, PI, BOPP, PE, and TPX.
The invention also provides a preparation method of the antistatic optical release film for the OCA optical adhesive, which comprises the following steps:
a. coating a layer of antistatic aqueous solution on the corona surface of the optical PET film in a micro-concave coating mode, wherein the coating humidity is 1-10 mu m, the aqueous solution is 5% of polythiophene aqueous solution in parts by weight, and baking the aqueous solution for 25 seconds at the temperature of 110 ℃ to obtain a semi-finished product of the antistatic film;
b. and coating a layer of antistatic release coating liquid on the antistatic surface of the semi-finished product of the antistatic film, adopting a micro-concave coating mode, coating the coating with the wet thickness of 2-10 microns, and baking for 30 seconds at the temperature of 140 ℃ for curing to obtain the antistatic release film.
The invention has the beneficial effects that:
1. the antistatic release layer is provided with the antistatic layer and the antistatic release layer with the conductive particles, so that the antistatic release layer has double antistatic effects, static electricity on a film surface is primarily guided and removed by the antistatic release layer, static voltage is further guided and accumulated by the antistatic layer, the film tearing voltage of the release film is reduced, and static electricity is prevented from being generated;
2. the conductive particles comprise more than two conductive particles with different particle sizes, and because the nano conductive particles with different particle sizes can be stacked more tightly, the conductivity is better, and the antistatic effect is better;
3. when the addition amount of the conductive particles is too large, the agglomeration of the nano particles in the release coating is serious, so that the residual adhesion rate of the release coating is reduced, and the use of the OCA release film on a downstream OCA adhesive film is influenced;
4. when 0.02 part of mixed conductive silver powder with the grain diameter of 50 nm: 100nm:200 nm: 1:1 is taken, the release film has the best performance, and the antistatic value reaches 10 4 Omega, the residual adhesion rate has reached 88.7%, can prevent to produce static when tearing off the membrane, has ensured the rear end of OCA glued membrane and has used the yield, can guarantee again that the surface adhesive force of OCA glued membrane is not influenced.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of an antistatic optical release film for OCA optical cement of the present invention.
In the figure: 1-a substrate layer, 2-an antistatic layer and 3-an antistatic release layer.
[ detailed description ] embodiments
Example 1:
referring to fig. 1, the antistatic optical release film for the OCA optical cement comprises an optical substrate layer 1, an antistatic layer 2 and an antistatic release layer 3 which are arranged from bottom to top, wherein the antistatic release layer 3 is formed by coating antistatic release coating liquid containing conductive particles, and the antistatic release coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.5 part of hydrogen-containing polysiloxane, 0.2 part of anchoring agent, 0.3 part of platinum catalyst, 0.02 part of flatting agent, 0.03 part of defoaming agent and 0.02 part of spherical conductive silver powder with the particle size of 50 nm;
the vinyl polysiloxane is polysiloxane with vinyl as an end group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-60000mPa & s; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight-average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the flatting agent is BYK-300; the defoaming agent is BYK-061.
The preparation method comprises the following steps: coating an antistatic aqueous solution layer with the coating wet thickness of 4 mu m on the corona surface of the optical PET film, baking the aqueous solution layer at 110 ℃ for 25 seconds to obtain a semi-finished product of the antistatic film, coating an antistatic release coating solution layer on the antistatic surface of the semi-finished product of the antistatic film, coating the coating wet thickness of 6 mu m in the coating wet thickness of micro-concave coating mode, baking the coating layer at 140 ℃ for 30 seconds, and curing to obtain the antistatic release film.
Example 2:
referring to fig. 1, the antistatic optical release film for the OCA optical cement comprises an optical substrate layer 1, an antistatic layer 2 and an antistatic release layer 3 which are arranged from bottom to top, wherein the antistatic release layer 3 is formed by coating antistatic release coating liquid containing conductive particles, and the antistatic release coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.5 part of hydrogen-containing polysiloxane, 0.2 part of anchoring agent, 0.3 part of platinum catalyst, 0.02 part of flatting agent, 0.03 part of defoaming agent and 0.02 part of spherical conductive silver powder with the particle size of 100 nm;
the vinyl polysiloxane is polysiloxane with vinyl as an end group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-60000mPa & s; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight-average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the leveling agent is BYK-300; the defoaming agent is BYK-061.
The preparation method is the same as that of example 1.
Example 3:
referring to fig. 1, the antistatic optical release film for the OCA optical cement comprises an optical substrate layer 1, an antistatic layer 2 and an antistatic release layer 3 which are arranged from bottom to top, wherein the antistatic release layer 3 is formed by coating antistatic release coating liquid containing conductive particles, and the antistatic release coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.5 part of hydrogen-containing polysiloxane, 0.2 part of anchoring agent, 0.3 part of platinum catalyst, 0.02 part of flatting agent, 0.03 part of defoaming agent and 0.02 part of spherical conductive silver powder with the particle size of 200 nm;
the vinyl polysiloxane is polysiloxane with vinyl as an end group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-60000mPa & s; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the flatting agent is BYK-300; the antifoaming agent is BYK-061.
The preparation method is the same as that of example 1.
Example 4:
referring to fig. 1, the antistatic optical release film for the OCA optical cement comprises an optical substrate layer 1, an antistatic layer 2 and an antistatic release layer 3 which are arranged from bottom to top, wherein the antistatic release layer 3 is formed by coating antistatic release coating liquid containing conductive particles, and the antistatic release coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.5 part of hydrogen-containing polysiloxane, 0.2 part of anchoring agent, 0.3 part of platinum catalyst, 0.02 part of flatting agent, 0.03 part of defoaming agent and 0.01 part of spherical conductive silver powder with three particle sizes (50 nm: 100nm:200 nm: 1:1: 1);
the vinyl polysiloxane is polysiloxane with vinyl as a terminal group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-type mPa & s 60000; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight-average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the flatting agent is BYK-300; the defoaming agent is BYK-061.
The preparation method is the same as that of example 1.
Example 5:
referring to fig. 1, the antistatic optical release film for the OCA optical cement comprises an optical substrate layer 1, an antistatic layer 2 and an antistatic release layer 3 which are arranged from bottom to top, wherein the antistatic release layer 3 is formed by coating antistatic release coating liquid containing conductive particles, and the antistatic release coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.5 part of hydrogen-containing polysiloxane, 0.2 part of anchoring agent, 0.3 part of platinum catalyst, 0.02 part of flatting agent, 0.03 part of defoaming agent and 0.02 part of spherical conductive silver powder with three particle sizes (50 nm: 100nm:200 nm: 1:1: 1);
the vinyl polysiloxane is polysiloxane with vinyl as an end group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-60000mPa & s; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the flatting agent is BYK-300; the defoaming agent is BYK-061.
The preparation method is the same as that of example 1.
Example 6:
referring to fig. 1, the antistatic optical release film for the OCA optical cement comprises an optical substrate layer 1, an antistatic layer 2 and an antistatic release layer 3 which are arranged from bottom to top, wherein the antistatic release layer 3 is formed by coating antistatic release coating liquid containing conductive particles, and the antistatic release coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.5 part of hydrogen-containing polysiloxane, 0.2 part of anchoring agent, 0.3 part of platinum catalyst, 0.02 part of flatting agent, 0.03 part of defoaming agent and 0.03 part of spherical conductive silver powder with three particle sizes (50 nm: 100nm:200 nm: 1:1: 1);
the vinyl polysiloxane is polysiloxane with vinyl as an end group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-60000mPa & s; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight-average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the flatting agent is BYK-300; the antifoaming agent is BYK-061.
The preparation method is the same as that of example 1.
Example 7:
referring to fig. 1, the antistatic optical release film for the OCA optical cement comprises an optical substrate layer 1, an antistatic layer 2 and an antistatic release layer 3 which are arranged from bottom to top, wherein the antistatic release layer 3 is formed by coating antistatic release coating liquid containing conductive particles, and the antistatic release coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.5 part of hydrogen-containing polysiloxane, 0.2 part of anchoring agent, 0.3 part of platinum catalyst, 0.02 part of leveling agent, 0.03 part of defoaming agent and 0.02 part of spherical conductive silver powder with two particle sizes (50 nm: 100nm: 1);
the vinyl polysiloxane is polysiloxane with vinyl as an end group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-60000mPa & s; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight-average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the flatting agent is BYK-300; the defoaming agent is BYK-061.
The preparation method is the same as that of example 1.
Example 8:
referring to fig. 1, the antistatic optical release film for the OCA optical cement comprises an optical substrate layer 1, an antistatic layer 2 and an antistatic release layer 3 which are arranged from bottom to top, wherein the antistatic release layer 3 is formed by coating antistatic release coating liquid containing conductive particles, and the antistatic release coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.5 part of hydrogen-containing polysiloxane, 0.2 part of anchoring agent, 0.3 part of platinum catalyst, 0.02 part of leveling agent, 0.03 part of defoaming agent and 0.02 part of spherical conductive silver powder with two particle sizes (50 nm:200 nm: 1);
the vinyl polysiloxane is polysiloxane with vinyl as an end group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-60000mPa & s; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight-average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the flatting agent is BYK-300; the defoaming agent is BYK-061.
The preparation method is the same as that of example 1.
Example 9:
referring to fig. 1, the antistatic optical release film for the OCA optical cement comprises an optical substrate layer 1, an antistatic layer 2 and an antistatic release layer 3 which are arranged from bottom to top, wherein the antistatic release layer 3 is formed by coating antistatic release coating liquid containing conductive particles, and the antistatic release coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.5 part of hydrogen-containing polysiloxane, 0.2 part of anchoring agent, 0.3 part of platinum catalyst, 0.02 part of leveling agent, 0.03 part of defoaming agent and 0.02 part of spherical conductive silver powder with two particle sizes (100 nm:200 nm: 1);
the vinyl polysiloxane is polysiloxane with vinyl as an end group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-60000mPa & s; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight-average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the flatting agent is BYK-300; the defoaming agent is BYK-061.
The preparation method is the same as that of example 1.
Example 10:
referring to fig. 1, the antistatic optical release film for the OCA optical cement comprises an optical substrate layer 1, an antistatic layer 2 and an antistatic release layer 3 which are arranged from bottom to top, wherein the antistatic release layer 3 is formed by coating antistatic release coating liquid containing conductive particles, and the antistatic release coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.3 part of hydrogen-containing polysiloxane, 0.1 part of anchoring agent, 0.2 part of platinum catalyst, 0.01 part of flatting agent, 0.01 part of defoaming agent and 0.01 part of spherical conductive silver powder with the particle size of 50 nm;
the vinyl polysiloxane is polysiloxane with vinyl as an end group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-60000mPa & s; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight-average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the flatting agent is BYK-300; the defoaming agent is BYK-061.
The preparation method comprises the following steps: coating an antistatic aqueous solution layer with the coating wet thickness of 4 mu m on the corona surface of the optical PET film, baking the aqueous solution layer at 110 ℃ for 25 seconds to obtain a semi-finished product of the antistatic film, coating an antistatic release coating solution layer on the antistatic surface of the semi-finished product of the antistatic film, coating the coating wet thickness of 6 mu m in the coating wet thickness of micro-concave coating mode, baking the coating layer at 140 ℃ for 30 seconds, and curing to obtain the antistatic release film.
The preparation method is the same as that of example 1.
Example 11:
referring to fig. 1, the antistatic optical release film for the OCA optical cement comprises an optical substrate layer 1, an antistatic layer 2 and an antistatic release layer 3 which are arranged from bottom to top, wherein the antistatic release layer 3 is formed by coating antistatic release coating liquid containing conductive particles, and the antistatic release coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.7 part of hydrogen-containing polysiloxane, 0.3 part of anchoring agent, 0.5 part of platinum catalyst, 0.04 part of flatting agent, 0.05 part of defoaming agent and 0.01 part of spherical conductive silver powder with the particle size of 50 nm;
the vinyl polysiloxane is polysiloxane with vinyl as an end group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-60000mPa & s; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight-average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the flatting agent is BYK-300; the defoaming agent is BYK-061.
The preparation method comprises the following steps: coating an antistatic aqueous solution layer with the coating wet thickness of 4 mu m on the corona surface of the optical PET film, baking the aqueous solution layer at 110 ℃ for 25 seconds to obtain a semi-finished product of the antistatic film, coating an antistatic release coating solution layer on the antistatic surface of the semi-finished product of the antistatic film, coating the coating wet thickness of 6 mu m in the coating wet thickness of micro-concave coating mode, baking the coating layer at 140 ℃ for 30 seconds, and curing to obtain the antistatic release film.
The preparation method is the same as that of example 1.
Comparative example 1:
coating an antistatic aqueous solution layer on a corona surface of an optical PET film in a micro-concave coating mode, wherein the coating wet thickness is 4 mu m, the aqueous solution is 5 weight percent of polythiophene aqueous solution, baking is carried out for 25 seconds at the temperature of 110 ℃ to obtain a semi-finished product of an antistatic film, coating a release coating solution layer on the antistatic surface of the semi-finished product of the antistatic film, coating the coating wet thickness is 6 mu m in a micro-concave coating mode, baking is carried out for 30 seconds at the temperature of 140 ℃ to obtain an antistatic release film, and the release coating comprises the following components: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.5 part of hydrogen-containing polysiloxane, 0.2 part of anchoring agent, 0.3 part of platinum catalyst, 0.02 part of flatting agent and 0.03 part of defoaming agent.
The vinyl polysiloxane is polysiloxane with vinyl as an end group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-60000mPa & s; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight-average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the flatting agent is BYK-300; the defoaming agent is BYK-061.
Comparative example 2:
coating a layer of antistatic release coating liquid on the corona surface of the optical PET film in a micro-concave coating mode, wherein the coating wet thickness is 6 mu m in the micro-concave coating mode, baking for 30 seconds at the temperature of 140 ℃ for curing to obtain the antistatic release film, and the release coating comprises the following components: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.5 part of hydrogen-containing polysiloxane, 0.2 part of anchoring agent, 0.3 part of platinum catalyst, 0.02 part of leveling agent, 0.03 part of defoaming agent and 0.02 part of spherical conductive silver powder with three particle sizes (50 nm: 100nm:200 nm: 1:1: 1).
The vinyl polysiloxane is polysiloxane with vinyl as a terminal group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-type mPa & s 60000; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight-average molecular weight is 2-10 ten thousand, and the viscosity is 2000-5000mPa & s; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the flatting agent is BYK-300; the defoaming agent is BYK-061.
The examples and comparative examples were subjected to performance tests, and the results are shown in the following table:
TABLE 1
(Note: 1. Normal temperature 24 release force was measured using TESA 7475 tape, test method ASTM D3330;
2. the aging release force is tested by adopting a TESA 7475 adhesive tape under the conditions of 2KG pressure, 70 ℃ and 20H, and the test method is ASTM D3330;
3. the residual adhesion rate is tested by adopting a NITTO 31B adhesive tape, and the testing method is ASTM D3330;
4. the static resistance test is obtained by testing a digital resistance measuring instrument, wherein the model of the instrument is BENETECH/Bianzhi GM 3110;
5. the above test values are average values of five test values
From the antistatic values of comparative examples 1 to 3 and comparative example 1, it can be found that: when only a single conductive particle with a single particle size is added, the conductive capability of the conductive particle on the release film is slightly improved, but the effect is not good;
by comparing the antistatic values of examples 1 to 3, example 5 and examples 7 to 9, it can be found that: when the addition amount of the conductive particles is the same, when a plurality of conductive particles with different particle sizes are added, the conductive particles can be stacked more tightly, and the conductive effect is better.
From the antistatic values and residual adhesion rates of comparative examples 4 to 6, it can be found that: when the addition amount of the conductive particles is small, the antistatic capability of the conductive particles to the release film is not well improved, and when the addition amount of the conductive particles is too large, although the antistatic capability of the release film is improved, the nano particles in the release coating are seriously agglomerated, the residual adhesion rate can be obviously reduced, and the use of the OCA release film to a downstream OCA adhesive film can be influenced; the amount of the conductive particles added is preferably 0.02 part by weight.
From the antistatic values of comparative example 5 and comparative example 2, it can be derived: the antistatic ability of the release film can be further enhanced by smearing the water-soluble antistatic coating between the optical substrate layer and the antistatic release layer.
Example 5 is the best example, the adding amount of the conductive particles is 0.02 weight part, and the particle size is selected from the following components: 100nm: the conductive silver powder with the thickness of 200nm being 1:1:1 has good release force and antistatic value of 10 4 Omega, the residual adhesion rate is 88.7%, and the conductivity of the release layer is improved under the condition that a small amount of conductive particles are added, so that the release layer not only has good antistatic performance, but also the use of the OCA release film on a downstream OCA adhesive film is not influenced.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (8)
1. The utility model provides an OCA optical cement is with antistatic optics from type membrane which characterized in that: including substrate layer (1), antistatic layer (2) and the antistatic type layer (3) that set up from bottom to top, antistatic type layer (3) are formed by the coating of antistatic type masking liquid that contains conductive particle.
2. The antistatic optical release film for OCA optical cement according to claim 1, characterized in that: the conductive particles include two or more kinds of conductive particles having different particle diameters.
3. The antistatic optical release film for OCA optical cement according to claim 2, characterized in that: the antistatic release coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl ester, 10 parts of vinyl polysiloxane, 0.3-0.7 part of hydrogen-containing polysiloxane, 0.1-0.3 part of anchoring agent, 0.2-0.5 part of platinum catalyst, 0.01-0.04 part of flatting agent, 0.01-0.05 part of defoaming agent and 0.01-0.03 part of conductive particles.
4. The antistatic optical release film for OCA optical cement of claim 3, wherein: the conductive particles comprise three spherical conductive particles with the particle diameters of 50nm, 100nm and 200nm respectively.
5. The antistatic optical release film for OCA optical cement of claim 4, wherein: the antistatic release coating liquid comprises the following components in parts by weight: 60 parts of toluene, 20 parts of ethyl acetate, 10 parts of vinyl polysiloxane, 0.5 part of hydrogen-containing polysiloxane, 0.2 part of anchoring agent, 0.3 part of platinum catalyst, 0.02 part of flatting agent, 0.03 part of defoaming agent and 0.02 part of conductive particles, wherein the weight ratio of the three spherical conductive particles with different particle sizes is 1:1: 1.
6. The antistatic optical release film for OCA optical cement of claim 4, wherein: the spherical conductive particles are nickel powder or silver powder or copper powder.
7. The antistatic optical release film for OCA optical adhesive according to claim 3, wherein: the vinyl polysiloxane is polysiloxane with vinyl as an end group, the weight-average molecular weight is 40-100 ten thousand, the solid content is 40%, and the viscosity is 10000-60000mPa & s; the hydrogenpolysiloxane is polymethyl hydrogenpolysiloxane, the weight average molecular weight is 2-10 ten thousand, the viscosity is 2000-5000 mPa.s, and the solid content is 100%; the anchoring agent is 3-glycidyl ether oxypropyl triethoxysilane; the platinum catalyst is 5% chloroplatinic acid; the leveling agent is polyether modified organic siloxane leveling agent; the defoaming agent is an organic silicon defoaming agent.
8. A preparation method of an antistatic optical release film for OCA (optical clear adhesive) is characterized by comprising the following steps:
a. coating a layer of antistatic aqueous solution on the corona surface of the optical PET film in a micro-concave coating mode, wherein the coating wet thickness is 1-10 mu m, the aqueous solution is 5% polythiophene aqueous solution in parts by weight, and baking the aqueous solution for 25 seconds at the temperature of 110 ℃ to obtain an antistatic film semi-finished product;
b. and coating a layer of antistatic release coating liquid on the antistatic surface of the semi-finished product of the antistatic film, adopting a micro-concave coating mode, coating the coating with the wet thickness of 2-10 microns, and baking for 30 seconds at the temperature of 140 ℃ for curing to obtain the antistatic release film.
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