CN117025111B - Environment-friendly super-elastic acrylic protective film and preparation process thereof - Google Patents
Environment-friendly super-elastic acrylic protective film and preparation process thereof Download PDFInfo
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- CN117025111B CN117025111B CN202310999395.XA CN202310999395A CN117025111B CN 117025111 B CN117025111 B CN 117025111B CN 202310999395 A CN202310999395 A CN 202310999395A CN 117025111 B CN117025111 B CN 117025111B
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- acrylic protective
- elastic acrylic
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 238000002360 preparation method Methods 0.000 title claims abstract description 69
- 230000001681 protective effect Effects 0.000 title claims abstract description 68
- 239000003223 protective agent Substances 0.000 claims abstract description 34
- 239000000178 monomer Substances 0.000 claims abstract description 30
- 239000011241 protective layer Substances 0.000 claims abstract description 28
- 239000010410 layer Substances 0.000 claims abstract description 26
- -1 acrylic ester Chemical class 0.000 claims abstract description 24
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 21
- 150000001343 alkyl silanes Chemical class 0.000 claims abstract description 21
- 239000012790 adhesive layer Substances 0.000 claims abstract description 19
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 17
- 239000003085 diluting agent Substances 0.000 claims abstract description 17
- 239000002216 antistatic agent Substances 0.000 claims abstract description 15
- 239000004814 polyurethane Substances 0.000 claims abstract description 14
- 229920002635 polyurethane Polymers 0.000 claims abstract description 14
- 239000003999 initiator Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims description 21
- 238000000576 coating method Methods 0.000 claims description 21
- HMZGPNHSPWNGEP-UHFFFAOYSA-N octadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)=C HMZGPNHSPWNGEP-UHFFFAOYSA-N 0.000 claims description 14
- 238000001723 curing Methods 0.000 claims description 13
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 claims description 13
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 12
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 11
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 10
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 9
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000003848 UV Light-Curing Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 7
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 4
- SCPWMSBAGXEGPW-UHFFFAOYSA-N dodecyl(trimethoxy)silane Chemical compound CCCCCCCCCCCC[Si](OC)(OC)OC SCPWMSBAGXEGPW-UHFFFAOYSA-N 0.000 claims description 4
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 3
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- RSKGMYDENCAJEN-UHFFFAOYSA-N hexadecyl(trimethoxy)silane Chemical compound CCCCCCCCCCCCCCCC[Si](OC)(OC)OC RSKGMYDENCAJEN-UHFFFAOYSA-N 0.000 claims description 3
- SLYCYWCVSGPDFR-UHFFFAOYSA-N octadecyltrimethoxysilane Chemical compound CCCCCCCCCCCCCCCCCC[Si](OC)(OC)OC SLYCYWCVSGPDFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- IFXDUNDBQDXPQZ-UHFFFAOYSA-N 2-methylbutan-2-yl 2-ethylhexaneperoxoate Chemical compound CCCCC(CC)C(=O)OOC(C)(C)CC IFXDUNDBQDXPQZ-UHFFFAOYSA-N 0.000 claims description 2
- WYKYCHHWIJXDAO-UHFFFAOYSA-N tert-butyl 2-ethylhexaneperoxoate Chemical compound CCCCC(CC)C(=O)OOC(C)(C)C WYKYCHHWIJXDAO-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 230000000052 comparative effect Effects 0.000 description 24
- 239000000853 adhesive Substances 0.000 description 15
- 230000001070 adhesive effect Effects 0.000 description 15
- 238000004132 cross linking Methods 0.000 description 11
- 229920000139 polyethylene terephthalate Polymers 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 238000006116 polymerization reaction Methods 0.000 description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 239000011159 matrix material Substances 0.000 description 9
- 239000011347 resin Substances 0.000 description 9
- 229920005989 resin Polymers 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- 239000003522 acrylic cement Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical group OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
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- 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
- C09J7/255—Polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/006—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00
- C08F283/008—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00 on to unsaturated polymers
-
- 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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- 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
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- 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
- C09J2301/302—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 being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2483/00—Presence of polysiloxane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The application relates to the field of protective films, and discloses an environment-friendly super-elastic acrylic protective film and a preparation process thereof, wherein the environment-friendly super-elastic acrylic protective film is provided with an elastic acrylic protective layer, a PET layer, an adhesive layer and a release film layer from outside to inside, and the elastic acrylic protective layer is prepared from the following raw materials in parts by weight: 45-65 parts of polyurethane acrylic ester, 30-50 parts of acrylic diluent monomer, 3-8 parts of initiator, 3-5 parts of cross-linking agent, 2.5-3.5 parts of antistatic agent and 4-6 parts of long-chain alkyl silane coupling agent; the preparation method comprises the following steps: the elastic acrylic protective agent is prepared by using the raw materials, is coated on one surface of the PET layer, is cured to form a film, and is coated with a release film layer, wherein the adhesive layer is arranged on the other surface of the PET layer. The preparation method is simple and easy to operate, and the prepared environment-friendly super-elastic acrylic protective film has good environment friendliness, elasticity and antistatic property, has a good protective effect on electronic components, and has good anti-falling and anti-collision performances.
Description
Technical Field
The application relates to the field of protective films, in particular to an environment-friendly super-elastic acrylic protective film and a preparation process thereof.
Background
The acrylic protective film has better transparency, antistatic property, optical stability and weather resistance, so the acrylic protective film is widely applied to the lamination of FPC and PCB industries, the back glue industry and the die cutting process and transportation of electronic components, and plays a better role in protection.
At present, in the protection of electronic components, the conventionally used acrylic protective film is generally formed by coating an acrylic adhesive on the surface of a PET film, and attaching a release film on the surface of the acrylic adhesive after curing, and the used acrylic adhesive is generally prepared by curing an acrylic resin, an organic solvent such as acetone or toluene, a curing agent and other auxiliary agents, so that the electronic components have better attaching property and weather resistance, but the electronic components are easily damaged by external collision in the die cutting process and the transportation process, so that the electronic components are further required to be improved.
Disclosure of Invention
In order to solve the problem that the anti-collision performance of the electronic components is lower when the conventionally used acrylic protective film is used for protecting the electronic components, the application provides an environment-friendly super-elastic acrylic protective film and a preparation process thereof.
In a first aspect, the present application provides an environment-friendly super-elastic acrylic protective film, which adopts the following technical scheme:
an environment-friendly super-elastic acrylic protective film is sequentially provided with an elastic acrylic protective layer, a PET layer, an adhesive layer and a release film layer from outside to inside, wherein the elastic acrylic protective layer is prepared by coating and curing an elastic acrylic protective agent, and the elastic acrylic protective agent is prepared from the following raw materials in parts by weight:
45-65 parts of polyurethane acrylic ester
30-50 parts of acrylic diluent monomer
3-8 parts of initiator
3-5 parts of cross-linking agent
2.5 to 3.5 parts of antistatic agent
4-6 parts of long-chain alkyl silane coupling agent.
Through adopting above-mentioned technical scheme, this application uses polyurethane acrylic ester as matrix resin, polyurethane acrylic resin has better pliability and elasticity, take acrylic diluent monomer as diluent and functional monomer, carry out the polymerization under the effect of initiator, the cross-linking agent has better cross-linking reaction's effect, can promote matrix resin and functional monomer polymerization's crosslink density, and then promote the elasticity of the elastic acrylic protective layer of preparation, antistatic agent has better antistatic effect, the introduction of antistatic agent can further promote the antistatic effect of the elastic acrylic protective layer of preparation, make the surface of the elastic acrylic protective layer of preparation be difficult for dirt such as dirt that is stained with dust, promote the guard action to electronic components and parts, long-chain alkyl silane coupling agent has longer polymer three-dimensional network structure, the pliability and elasticity of molecular chain segment are better, can make matrix resin and functional monomer evenly distributed in three-dimensional network structure, carry out stable cross-linking polymerization, further promote the elasticity of the elastic acrylic protective layer of preparation, simultaneously, the elastic acrylic protective layer of preparation still has better adhesive force and pliability, the elastic acrylic protective layer of preparation does not contain organic solvent such as toluene, the protective layer has better environmental protection performance compared with traditional acrylic film.
In summary, the environment-friendly super-elastic acrylic protective film with better elasticity and environmental protection, which is prepared by compounding the elastic acrylic protective layer, the PET layer, the adhesive layer and the release film layer, has better protection effect on electronic components, improves the anti-collision and anti-falling performance of the electronic components, and meanwhile, the prepared environment-friendly super-elastic acrylic film also has better adhesive force, anti-static property and flexibility, so that the electronic components are not easy to damage in the die cutting process or the transportation process.
Preferably, the acrylic diluent monomer consists of methyl methacrylate, lauryl methacrylate and stearyl methacrylate in an amount ratio of (0.5-0.6): 1 (0.3-0.5).
By adopting the technical scheme, the methyl methacrylate is a hard monomer, the hardness of the prepared elastic acrylic protective layer can be improved, the lauryl methacrylate is a soft monomer, the flexibility and film forming property of the prepared elastic acrylic protective layer can be improved, the stearyl methacrylate is a long-chain functional monomer, the crosslinking effect of the prepared elastic acrylic protective layer can be improved, the elasticity and adhesive force are further improved, and the methyl methacrylate, the lauryl methacrylate and the stearyl methacrylate which are in a better proportion are used as dilution and reaction monomers to prepare the elastic acrylic protective layer with better hardness, elasticity and adhesive force at the same time.
Preferably, the cross-linking agent consists of gamma-methacryloxypropyl trimethoxysilane and glycidyl methacrylate in an amount ratio of 1 (0.3-0.5).
By adopting the technical scheme, the gamma-methacryloxypropyl trimethoxy silane and glycidyl methacrylate with a better proportion are used as the cross-linking agents, so that the cross-linking performance of the prepared matrix resin and the functional monomer in the three-dimensional network structure of the long-chain alkyl silane coupling agent can be further improved, and the elastic acrylic protective layer with good flexibility and elasticity can be prepared.
Preferably, the antistatic agent consists of a polyethylene and a terminal vinyl polydimethylsiloxane in an amount ratio of 1 (0.2-0.4).
By adopting the technical scheme, the polyethylene and the vinyl-terminated polydimethylsiloxane with a better proportion are used as the antistatic agent, so that the antistatic performance of the prepared elastic acrylic protective film is improved, and meanwhile, the vinyl-terminated polydimethylsiloxane can generate better synergistic effect with the long-chain alkyl silane coupling agent, the uniform polymerization stability of the matrix resin and the functional monomer is further improved, and the elasticity of the prepared elastic acrylic protective film is improved.
Preferably, the long-chain alkyl silane coupling agent is any one of dodecyl trimethoxy silane, hexadecyl trimethoxy silane and octadecyl trimethoxy silane.
By adopting the technical scheme, the dodecyl trimethoxy silane, the hexadecyl trimethoxy silane and the octadecyl trimethoxy silane are all long-chain alkyl silane coupling agents, the molecular structure has good flexibility and elasticity, and the elastic acrylic protective film can form a macromolecular three-dimensional network crosslinking structure after being added into the elastic acrylic protective agent, so that the crosslinking stability of matrix resin and functional monomers is improved, and the prepared elastic acrylic protective film has good elasticity, flexibility and adhesive force.
Preferably, the initiator is one or more of dibenzoyl peroxide, tert-butyl peroxy-2-ethylhexanoate and tert-amyl peroxy-2-ethylhexanoate.
By adopting the technical scheme, the initiator has the function of initiating the polymerization reaction, so that the matrix resin and the functional monomer perform stable cross-linking polymerization reaction.
Preferably, the elastic acrylic protective agent is prepared by the following steps:
a1, adding polyurethane acrylic ester and acrylic acid diluent monomers into reaction equipment, heating to 60-75 ℃ and stirring to prepare a mixture A;
a2, adding an initiator, an antistatic agent and a long-chain alkyl silane coupling agent into the mixture A, reacting for 30-60min, adding a crosslinking agent, and reacting for 1-2h to obtain the elastic acrylic protective agent.
Through adopting the technical scheme, firstly, polyurethane acrylic ester and acrylic acid type diluent monomers are mixed at a better temperature, so that the polyurethane acrylic ester and the acrylic acid type diluent monomers are uniformly dispersed, then, an initiator, an antistatic agent and a long-chain alkyl silane coupling agent are added, under the action of the initiator, the polyurethane acrylic ester and the acrylic acid type diluent monomers are subjected to polymerization reaction in a three-dimensional network structure formed by the long-chain alkyl silane coupling agent, then, a cross-linking agent is added, and further, the cross-linking reaction is carried out, so that the elastic acrylic protective agent is prepared.
Preferably, the adhesive layer is formed by coating an organosilicon pressure-sensitive adhesive.
By adopting the technical scheme, the organic silicon pressure-sensitive adhesive has good laminating stability and low peeling strength, can be stably laminated on the surface of an electronic component, and is easy to peel and difficult to have residual adhesive.
In a second aspect, the present application provides a preparation process of an environment-friendly super-elastic acrylic protective film, which adopts the following technical scheme:
the preparation process of the environment-friendly super-elastic acrylic protective film comprises the following preparation steps:
s1, coating an elastic acrylic protective agent on one surface of a PET layer, and performing UV light curing and drying to form an elastic acrylic protective layer;
s2, coating an organic silicon pressure-sensitive adhesive on the other side of the PET layer to form an adhesive layer, and coating a release film layer on the surface of the adhesive layer to prepare the environment-friendly super-elastic acrylic protective film.
By adopting the technical scheme, the prepared elastic acrylic protective agent is uniformly coated on one side surface of the PET layer, and the elastic acrylic protective agent is prepared by UV curing and drying, so that the PET layer has better environmental protection. And coating an organic silicon pressure-sensitive adhesive on the other side surface of the PET layer to form an adhesive layer, and attaching a release film layer on the surface of the adhesive layer to prepare the environment-friendly super-elastic acrylic protective film.
When the environment-friendly super-elastic acrylic protective film is used, the release film is torn off, one surface of the adhesive layer is attached to the surface of an electronic component to be protected, one side with the elastic acrylic protective layer is arranged on the outer side, and the environment-friendly super-elastic acrylic protective film has a good protective effect on the electronic component, and has a good antistatic effect while preventing falling and colliding.
Preferably, the coating amount of the elastic acrylic protective agent in the step S1 is 40-80g/m 2 The energy of UV light curing is 1100-1400mj/cm 2 The curing time is 15-25s; the coating weight of the organic silicon pressure-sensitive adhesive in the step S2 is 15-20g/m 2 The drying temperature is 90-120deg.C, and the drying time is 2-4min.
By adopting the technical scheme, the coating is carried out with a better coating amount, and the curing is carried out with a better curing energy and curing time, so that the elastic acrylic protective agent is uniformly and stably cured, the elastic acrylic protective film with a better thickness and curing stability is prepared, the protective effect on electronic components is better, the coating amount of the organosilicon pressure-sensitive adhesive is better, the prepared adhesive layer has better laminating performance, is easy to tear and has no residual adhesive, and the environment-friendly super-elastic acrylic protective film with stable performance is prepared.
In summary, the present application has the following beneficial effects:
1. according to the environment-friendly super-elastic acrylic protective film, polyurethane acrylic ester is used as matrix resin, acrylic diluent monomers are used as diluents and reaction functional monomers, polymerization reaction is carried out under the initiation action of an initiator, the crosslinking action of the polymerization reaction is promoted through the synergistic effect of the crosslinking agent, the antistatic agent and the long-chain alkyl silane coupling agent, uniform and stable crosslinking polymerization is carried out in a three-dimensional network structure formed by the long-chain alkyl silane coupling agent, an elastic acrylic protective layer with good elasticity, antistatic property and adhesive force is prepared, traditional organic solvents such as acetone and toluene are not used in the preparation process, and then the environment-friendly super-elastic acrylic protective film with good environment-friendly property, elasticity, antistatic property and adhesive force is prepared, and the environment-friendly super-elastic acrylic protective film has good anti-falling and anti-collision performance and good protective effect on electronic components.
2. The elastic acrylic protective layer with better hardness, elasticity and adhesive force is prepared by taking methyl methacrylate, lauryl methacrylate and stearyl methacrylate with better proportion as diluting and reacting functional monomers, and the prepared environment-friendly super-elastic acrylic protective film has better elasticity and adhesive force and can stably protect electronic components.
3. By taking gamma-methacryloxypropyl trimethoxy silane and glycidyl methacrylate with a better proportion as cross-linking agents, the cross-linking performance of the prepared matrix resin and functional monomers in a three-dimensional network structure of a long-chain alkyl silane coupling agent can be further improved, and the elastic acrylic protective layer with good elasticity, adhesive force and flexibility is prepared.
4. The preparation process is simple and convenient, and the prepared environment-friendly super-elastic acrylic protective film is stable in performance, has a good protective effect on electronic components, and has a good antistatic effect while preventing falling and collision.
Detailed Description
The present application is described in further detail below with reference to examples.
The following are some sources and specifications of the raw materials in the present application, but not only the following raw materials can be used, but also other raw materials with similar types and properties can be selected and sold commercially, and the raw materials in the preparation examples and examples of the present application can be obtained commercially:
1. polyurethane acrylate: model YC2521, functionality of 2, viscosity of 30000-50000mPa.s (25 ℃);
2. polyethylene oxide: molecular weight 1-2 ten thousand;
3. vinyl terminated polydimethyl siloxane: vinyl content 1.2-1.7%, viscosity 10-50cst;
4. organosilicon pressure-sensitive adhesive: kang Libang KL-2620;
5. and (3) release film layer: PET release film, thickness 25um.
Preparation example of elastic acrylic protective agent
Preparation example 1
An elastic acrylic protective agent is prepared by the following steps:
a1, adding 4.5kg of polyurethane acrylic ester and an acrylic acid type diluent monomer consisting of 1kg of methyl methacrylate, 1kg of lauryl methacrylate and 1kg of stearyl methacrylate into a reaction kettle, and heating to 60 ℃ for stirring to prepare a mixture A;
a2, adding 0.3kg of dibenzoyl peroxide serving as an initiator, an antistatic agent consisting of 0.208kg of polyethylene oxide and 0.042kg of vinyl-terminated polydimethylsiloxane and 0.4kg of dodecyl trimethoxy silane serving as a long-chain alkyl silane coupling agent into the mixture A, reacting for 30min, adding 0.27kg of gamma-methacryloxypropyl trimethoxy silane and 0.03kg of glycidyl methacrylate serving as a crosslinking agent, and reacting for 1h to obtain the elastic acrylic protective agent.
PREPARATION EXAMPLES 2-3
Preparation examples 2-3 disclose an elastic acrylic protective agent, which is different from preparation example 1 in the amount of raw materials and preparation conditions, and refer to the following table 1.
TABLE 1 raw materials amounts and preparation conditions of preparation examples 1 to 3
Preparation example 4
Preparation example 4 discloses an elastic acrylic protective agent differing from preparation example 1 in the ratio of acrylic diluent monomer, the amount of methyl methacrylate used was 0.83kg, the amount of lauryl methacrylate used was 1.67kg, the amount of stearyl methacrylate used was 0.5kg, and the other matters were the same as in preparation example 1.
Preparation example 5
Preparation example 5 discloses an elastic acrylic protective agent differing from preparation example 1 in the ratio of acrylic acid type diluent monomer, the amount of methyl methacrylate used was 0.857kg, the amount of lauryl methacrylate used was 1.428kg, the amount of stearyl methacrylate used was 0.715kg, and the other was the same as in preparation example 1.
Preparation example 6
Preparation example 6 discloses an elastic acrylic protective agent, which is used in preparation example 4 except that the proportion of the crosslinking agent is different, the amount of gamma-methacryloxypropyl trimethoxysilane is 0.23kg, the amount of glycidyl methacrylate is 0.07kg, and the other is the same as in preparation example 4.
Preparation example 7
Preparation example 7 discloses an elastic acrylic protective agent, which is different from preparation example 4 in the proportion of the crosslinking agent, the amount of gamma-methacryloxypropyl trimethoxysilane is 0.2kg, and the amount of glycidyl methacrylate is 0.1kg, except that the ratio is the same as in preparation example 4.
Preparation of comparative example 1
Preparation comparative example 1 discloses an elastic acryl protective agent which is different from preparation example 1 in that octadecyl methacrylate is replaced with lauryl methacrylate in the same amount, and the other is the same as preparation example 1.
Preparation of comparative example 2
Preparation comparative example 2 discloses an elastic acryl protective agent which is different from preparation example 1 in that octadecyl methacrylate is replaced with 2-hydroxyethyl acrylate in equal amount, and the other is the same as preparation example 1.
Preparation of comparative example 3
Preparation comparative example 3 discloses an elastic acryl protective agent which is different from preparation example 1 in that methyl methacrylate and lauryl methacrylate are replaced with stearyl methacrylate in equal amounts, and the other is the same as preparation example 1.
Preparation of comparative example 4
Preparation comparative example 4 discloses an elastic acryl protective agent which is different from preparation example 1 in that gamma-methacryloxypropyl trimethoxysilane is replaced with glycidyl methacrylate in equal amount, and the other is the same as preparation example 1.
Preparation of comparative example 5
Preparation comparative example 5 discloses an elastic acryl protective agent which is different from preparation example 1 in that the terminal vinyl polydimethylsiloxane is replaced with polyethylene oxide in the same amount, and the other is the same as preparation example 1.
Examples
Example 1
Example 1 discloses an environment-friendly super-elastic acrylic protective film, which is prepared by the following preparation process:
s1, mixing 40g/m of the elastic acrylic protective agent prepared in preparation example 1 2 The coating amount of (2) is coated on one side of the PET layer, and is cured on a UV curing device, wherein the energy of UV light curing is 1100mj/cm 2 Curing for 25s, and curing and drying to form a film to form an elastic acrylic protective layer;
s2, mixing the commercially available organic silicon pressure-sensitive adhesive with 15g/m 2 The coating amount of the adhesive layer is coated on the other side of the PET layer, the adhesive layer is formed after drying for 2min in a drying oven with the temperature of 90 ℃, and then the PET release film layer with the thickness of 0.25 mu m is coated on the surface of the adhesive layer, so that the environment-friendly super-elastic acrylic protective film is prepared.
Examples 2 to 3
Examples 2-3 disclose an environment-friendly superelastic acrylic protective film, which is different from example 1 in that the source of the elastic acrylic protective agent and the preparation conditions of the environment-friendly superelastic acrylic protective film are different, and refer to the following table 2.
TABLE 2 Source of elastic acrylic protective agent and preparation condition Table of Environment-friendly super-elastic acrylic protective film of examples 1-4
Examples 4 to 12
Examples 4-12 disclose an environment-friendly superelastic acrylic protective film, which is different from example 1 in that the source of the elastic acrylic protective film is different, see in particular table 3 below.
TABLE 3 Source list of elastic acrylic protective films of examples 4-12
Comparative example
Comparative example 1
Comparative example 1 discloses an environment-friendly superelastic acrylic protective film, which is different from example 1 in that the long-chain alkyl silane coupling agent is replaced by methyltriethoxysilane coupling agent in equivalent amount in comparative example 1, and the other is the same as example 1.
Comparative example 2
Comparative example 2 discloses an environment-friendly superelastic acrylic protective film, which is different from example 1 in that the long-chain alkyl silane coupling agent is replaced by polyurethane acrylate in equivalent amount in comparative example 2, and the other is the same as example 1.
Performance test
The environmental protection superelastic acrylic protective films prepared in examples 1 to 12 and comparative examples 1 to 2 were subjected to the following performance test:
(1) Elasticity test
Referring to a test method in an ASTMD 1054-2002 test method for measuring elasticity by a rebound pendulum method, peeling off a release film layer of an environment-friendly super-elastic acrylic protective film, attaching an adhesive layer to the surface of a fixed plate (a test iron plate is selected for testing in the application), performing elasticity test on the environment-friendly super-elastic acrylic protective film, recording the rebound rate (unit:%), and detecting and recording a detection result;
(2) Adhesion test
Performing an adhesive force test on the elastic acrylic protective layer of the environment-friendly super-elastic acrylic protective film prepared in examples 1-12 and comparative examples 1-2 by referring to a hundred-cell test method, detecting and recording detection results;
the following are the elasticity and adhesion test data for examples 1-12 and comparative examples 1-2, see in particular Table 4 below.
TABLE 4 elastic and adhesion data tables for examples 1-12 and comparative examples 1-2
As can be seen from the combination of examples 1-5 and examples 8-10 and the combination of Table 4, the preparation of the elastic acrylic protective layer by using methyl methacrylate, lauryl methacrylate and stearyl methacrylate as the diluting and reacting functional monomers in the preferred proportion in the present application has better elasticity and adhesion, while the prepared environment-friendly super-elastic acrylic protective film has reduced elasticity and adhesion by using only methyl methacrylate and lauryl methacrylate in example 8, the equivalent amount of stearyl methacrylate is replaced by 2-hydroxyethyl acrylate in example 9, and the equivalent amount of methyl methacrylate and lauryl methacrylate is replaced by stearyl methacrylate in example 10.
As can be seen from the combination of examples 1 to 3, 6 to 7 and example 11 and the combination of Table 4, the environment-friendly super-elastic acrylic protective film prepared by using gamma-methacryloxypropyl trimethoxysilane and glycidyl methacrylate in a preferable ratio as the crosslinking agent has better elasticity and adhesive force, while the environment-friendly super-elastic acrylic protective film prepared by using only glycidyl methacrylate as the crosslinking agent in example 11 has reduced elasticity and adhesive force.
As can be seen from the combination of examples 1 to 3 and example 12 and the combination of Table 4, the elasticity of the prepared environment-friendly super-elastic acrylic protective film is improved by using the antistatic agent with a better proportion, and the resistance value of the environment-friendly super-elastic acrylic protective film prepared by using the antistatic agent with a better proportion can reach 10 11 Omega, has better antistatic effect, can reduce the accumulation of dirt such as dust of the environment-friendly super-elastic acrylic protective film, and promotes the protection effect on electronic components.
It can be seen from the combination of examples 1-3 and comparative examples 1-2 and the combination of table 4 that the use of the long-chain alkyl silane coupling agent as the three-dimensional network polymer carrier in the present application improves the elasticity and adhesion of the prepared environment-friendly super-elastic acrylic protective film, while the use of the short-chain methyltriethoxysilane coupling agent in comparative example 1 and the use of the long-chain alkyl silane coupling agent in comparative example 2 significantly decreases the elasticity and adhesion of the prepared environment-friendly super-elastic acrylic protective film.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.
Claims (7)
1. The environment-friendly super-elastic acrylic protective film is characterized in that an elastic acrylic protective layer, a PET layer, an adhesive layer and a release film layer are sequentially arranged from outside to inside, the elastic acrylic protective layer is prepared by coating and curing an elastic acrylic protective agent, and the elastic acrylic protective agent is prepared from the following raw materials in parts by weight:
45-65 parts of polyurethane acrylic ester
30-50 parts of acrylic diluent monomer
3-8 parts of initiator
3-5 parts of cross-linking agent
2.5 to 3.5 parts of antistatic agent
4-6 parts of long-chain alkyl silane coupling agent;
the cross-linking agent consists of gamma-methacryloxypropyl trimethoxy silane and glycidyl methacrylate with the dosage ratio of (0.3-0.5);
the antistatic agent consists of polyethylene oxide and vinyl-terminated polydimethylsiloxane with the dosage ratio of (0.2-0.4);
the long-chain alkyl silane coupling agent is any one of dodecyl trimethoxy silane, hexadecyl trimethoxy silane and octadecyl trimethoxy silane.
2. The environment-friendly super-elastic acrylic protective film according to claim 1, wherein the acrylic diluent monomer is composed of methyl methacrylate, lauryl methacrylate and stearyl methacrylate with the dosage ratio of (0.5-0.6) 1 (0.3-0.5).
3. The environment-friendly super elastic acrylic protective film according to claim 1, wherein the initiator is one or more of dibenzoyl peroxide, tert-butyl peroxy-2-ethylhexanoate and tert-amyl peroxy-2-ethylhexanoate.
4. An environment-friendly super-elastic acrylic protective film according to any one of claims 1 to 3, wherein the elastic acrylic protective agent is prepared by the following steps:
a1, adding polyurethane acrylic ester and acrylic acid diluent monomers into reaction equipment, heating to 60-75 ℃ and stirring to prepare a mixture A;
a2, adding an initiator, an antistatic agent and a long-chain alkyl silane coupling agent into the mixture A, reacting for 30-60min, adding a crosslinking agent, and reacting for 1-2h to obtain the elastic acrylic protective agent.
5. The environment-friendly super-elastic acrylic protective film according to claim 1, wherein the adhesive layer is formed by coating an organosilicon pressure-sensitive adhesive.
6. A process for preparing an environment-friendly super-elastic acrylic protective film according to any one of claims 1 to 5, which is characterized by comprising the following preparation steps:
s1, coating an elastic acrylic protective agent on one surface of a PET layer, and performing UV light curing and drying to form an elastic acrylic protective layer;
s2, coating an organic silicon pressure-sensitive adhesive on the other side of the PET layer, drying to form an adhesive layer, and coating a release film layer on the surface of the adhesive layer to prepare the environment-friendly super-elastic acrylic protective film.
7. The process for preparing environment-friendly super-elastic acrylic protective film according to claim 6, wherein the coating amount of the elastic acrylic protective agent in the step S1 is 40-80g/m 2 The energy of UV light curing is 1100-1400mj/cm 2 The curing time is 15-25s; the coating weight of the organic silicon pressure-sensitive adhesive in the step S2 is 15-20g/m 2 The drying temperature is 90-120deg.C, and the drying time is 2-4min.
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| CN105175641A (en) * | 2015-09-25 | 2015-12-23 | 三棵树涂料股份有限公司 | Silane coupling agent modified polyurethane-acrylate composite emulsion and preparation method thereof |
| CN109970945A (en) * | 2019-04-10 | 2019-07-05 | 武汉纺织大学 | A kind of organic-silicon-modified weak amphoteric ion type polyaminoester emulsion and preparation method thereof |
| CN111169117A (en) * | 2020-01-13 | 2020-05-19 | 泰兴联创绝缘材料有限公司 | Wear-resistant low-attenuation antistatic protective film and preparation method thereof |
| WO2021213114A1 (en) * | 2020-04-23 | 2021-10-28 | 广东邦固薄膜涂料创新研究院有限公司 | Anti-fingerprint tpu protective film for 3d curved screen and preparation method therefor |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105175641A (en) * | 2015-09-25 | 2015-12-23 | 三棵树涂料股份有限公司 | Silane coupling agent modified polyurethane-acrylate composite emulsion and preparation method thereof |
| CN109970945A (en) * | 2019-04-10 | 2019-07-05 | 武汉纺织大学 | A kind of organic-silicon-modified weak amphoteric ion type polyaminoester emulsion and preparation method thereof |
| CN111169117A (en) * | 2020-01-13 | 2020-05-19 | 泰兴联创绝缘材料有限公司 | Wear-resistant low-attenuation antistatic protective film and preparation method thereof |
| WO2021213114A1 (en) * | 2020-04-23 | 2021-10-28 | 广东邦固薄膜涂料创新研究院有限公司 | Anti-fingerprint tpu protective film for 3d curved screen and preparation method therefor |
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