CN114456725A - Novel functional pressure-sensitive adhesive composite structure - Google Patents
Novel functional pressure-sensitive adhesive composite structure Download PDFInfo
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- CN114456725A CN114456725A CN202210128211.8A CN202210128211A CN114456725A CN 114456725 A CN114456725 A CN 114456725A CN 202210128211 A CN202210128211 A CN 202210128211A CN 114456725 A CN114456725 A CN 114456725A
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- silica gel
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- sensitive adhesive
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- 239000004820 Pressure-sensitive adhesive Substances 0.000 title claims abstract description 27
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 239000011347 resin Substances 0.000 claims abstract description 111
- 229920005989 resin Polymers 0.000 claims abstract description 111
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 78
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000000741 silica gel Substances 0.000 claims abstract description 61
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 61
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 39
- 239000000203 mixture Substances 0.000 claims abstract description 37
- 239000003054 catalyst Substances 0.000 claims abstract description 30
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 230000003197 catalytic effect Effects 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 16
- 230000001681 protective effect Effects 0.000 claims abstract description 16
- 238000002360 preparation method Methods 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- 229910052793 cadmium Inorganic materials 0.000 claims abstract description 8
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 150000002500 ions Chemical class 0.000 claims abstract description 8
- 229910052745 lead Inorganic materials 0.000 claims abstract description 8
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 8
- 239000002244 precipitate Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical class N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 4
- 239000011593 sulfur Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 230000001070 adhesive effect Effects 0.000 claims description 33
- 239000000853 adhesive Substances 0.000 claims description 30
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 18
- 125000000524 functional group Chemical group 0.000 claims description 18
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 18
- AQGDXJQRVOCUQX-UHFFFAOYSA-N N.[S] Chemical compound N.[S] AQGDXJQRVOCUQX-UHFFFAOYSA-N 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 12
- 238000009835 boiling Methods 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 abstract description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- GYHFUZHODSMOHU-UHFFFAOYSA-N nonanal Chemical compound CCCCCCCCC=O GYHFUZHODSMOHU-UHFFFAOYSA-N 0.000 description 6
- 229920002635 polyurethane Polymers 0.000 description 6
- 239000004814 polyurethane Substances 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 229920005749 polyurethane resin Polymers 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- JUWSSMXCCAMYGX-UHFFFAOYSA-N gold platinum Chemical compound [Pt].[Au] JUWSSMXCCAMYGX-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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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
- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives 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; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
-
- 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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- 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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
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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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a novel functional pressure-sensitive adhesive composite structure, which comprises an upper protective film, platinum catalytic silica gel, a PEN (PEN) base material and a lower protective film which are sequentially arranged from top to bottom, wherein the preparation raw materials of the platinum catalytic silica gel comprise a platinum catalyst and a resin mixture, and the weight ratio of the platinum catalyst to the resin mixture is (1-2) to (400-800). In the novel functional pressure-sensitive adhesive composite structure provided by the invention, platinum catalyst and resin mixture are used for preparing platinum-catalyzed silica gel, and the platinum-catalyzed silica gel is coated on the surface of a PEN substrate, the viscosity can reach 1500g/in, the platinum-catalyzed silica gel is not easy to fall off, the requirement that the platinum-catalyzed silica gel is boiled in water at 95 ℃ for 1000 hours has no precipitate, the element content of metal impurity ions Al, Cu, Ni, Cd, Cr and Pb is less than 10ppm, the Fe content is less than 30ppm, and sulfur and ammonia compounds are avoided, so that the novel functional pressure-sensitive adhesive composite structure is suitable for being attached to a proton exchange membrane CCM with catalysts coated on two surfaces.
Description
Technical Field
The invention belongs to the technical field of pressure-sensitive adhesives, and particularly relates to a novel functional pressure-sensitive adhesive composite structure.
Background
A fuel cell is a device that reacts fuel with an oxidant at high temperatures to generate electrical energy without combustion under isothermal conditions. The fuel cell has the advantages of high energy conversion rate and no waste gas generation, and is widely popularized and used at present. However, the viscosity between the proton exchange membrane and the PEN substrate of the current fuel cell is low, the gas sealing effect is poor, hydrogen or air is easy to communicate with each other, the service life and the power generation efficiency of the fuel cell are influenced, poisoning and explosion can be caused seriously, and the performance of the catalyst on the proton exchange membrane is influenced, so that the use and the development of the catalyst are limited.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide a novel functional pressure-sensitive adhesive composite structure.
In order to achieve the purpose and achieve the technical effect, the invention adopts the technical scheme that:
a novel functional pressure-sensitive adhesive composite structure comprises an upper protective film, platinum catalytic silica gel, a PEN base material and a lower protective film which are sequentially arranged from top to bottom, wherein the preparation raw materials of the platinum catalytic silica gel comprise a platinum catalyst and a resin mixture, and the weight ratio of the platinum catalyst to the resin mixture is (1-2) to (400-800).
Further, the resin mixture comprises the following components: resin, solvent, adhesive and silica gel.
Further, the weight ratio of the adhesive to the silica gel is 1:1, and the weight ratio of the sum of the weights of the adhesive and the silica gel to the resin is 2.1-2.2.
Further, the resin comprises a resin A with hydroxyl functional groups and a resin B with carboxyl functional groups, the weight ratio of the resin A to the resin B is 1:1, the stoichiometric ratio of the hydroxyl functional groups in the resin A can react with the carboxyl functional groups in the resin B, and the stoichiometric ratio of the carboxyl functional groups in the resin B can react with the hydroxyl functional groups in the resin A to form a network structure.
Further, the viscosity of the resin A is controlled to be 5000-20000 mPa.S, the number average molecular weight is controlled to be 22000-60000, and the acidity is controlled to beAt 120-500 equivalent/103Kg。
Further, the viscosity of the resin B is controlled to 3000-25000 mPa.S.
Further, the preparation method of the platinum-catalyzed silica gel comprises the following steps:
adding a platinum catalyst and a resin mixture into an ultrasonic stirrer under the conditions of temperature of 23 +/-2 ℃, relative humidity of 50-60 RH% and hundred-grade dust-free, ultrasonically stirring for 5-8h, standing for 20-25h, and ultrasonically stirring again for 4-8h, wherein the platinum catalytic silica gel meets the requirements of water boiling at 95 ℃ for 1000h, has no precipitate, no ammonia sulfur compound, metal impurity ions of Al, Cu, Ni, Cd, Cr and Pb with element content of less than 10ppm and Fe with element content of less than 30ppm, and has no sulfur and ammonia compounds.
Further, the application method of the platinum-catalyzed silica gel comprises the following steps:
and uniformly coating the mixture on the surface of the PEN substrate by using a slit coater, or adhering the mixture on the surface of the PEN substrate by glue or transferring the mixture to the surface of the PEN substrate by using a release film, and curing.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a novel functional pressure-sensitive adhesive composite structure, which comprises an upper protective film, platinum catalytic silica gel, a PEN (PEN) base material and a lower protective film which are sequentially arranged from top to bottom, wherein the preparation raw materials of the platinum catalytic silica gel comprise a platinum catalyst and a resin mixture, and the weight ratio of the platinum catalyst to the resin mixture is (1-2) to (400-800). In the novel functional pressure-sensitive adhesive composite structure provided by the invention, platinum catalyst and resin mixture are used for preparing platinum-catalyzed silica gel, and the platinum-catalyzed silica gel is coated on the surface of a PEN substrate, the viscosity can reach 1500g/in, the platinum-catalyzed silica gel is not easy to fall off, the requirement of poaching at 95 ℃ for 1000 hours is met, no precipitate exists, the element content of metal impurity ions Al, Cu, Ni, Cd, Cr and Pb is less than 10ppm, the Fe content is less than 30ppm, no sulfur and ammonia compounds exist, the permeability is good, and the novel functional pressure-sensitive adhesive composite structure is suitable for laminating a proton exchange membrane CCM with catalysts coated on two surfaces.
Detailed Description
The present invention is described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and thus the scope of the present invention can be clearly and clearly defined.
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
In the description of the present invention, the terms "inside", "outside", "vertical", "lateral", "up", "down", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are for convenience only to describe the present invention without requiring the present invention to be necessarily constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
As shown in figure 1, the invention provides a novel functional pressure-sensitive adhesive composite structure, which comprises an upper protective film 1, platinum-catalyzed silica gel 2, a PEN base material 3 and a lower protective film 4 which are sequentially arranged from top to bottom, wherein the platinum-catalyzed silica gel 2 is coated on the PEN base material 3, the viscosity can reach 1500g/in, and the composite structure is not easy to fall off.
The preparation raw material of the platinum-catalyzed silica gel 2 comprises a platinum catalyst and a resin mixture, wherein the weight ratio of the platinum catalyst to the resin mixture is (1-2): (400- & lt800). & gt.
The resin mixture comprises the following components:
resin composition
Solvent(s)
Adhesive agent
Silica gel.
The weight ratio of the adhesive to the silica gel is 1:1, and the weight ratio of the sum of the weight of the adhesive and the silica gel to the weight of the resin is 2.1-2.2.
The resin comprises a resin A with a hydroxyl functional group and a resin B with a carboxyl functional group, the weight ratio of the resin A to the resin B is 1:1, the stoichiometric ratio of the hydroxyl functional group in the resin A can react with the carboxyl functional group in the resin B, and the stoichiometric ratio of the carboxyl functional group in the resin B can react with the hydroxyl functional group in the resin A to form a network structure, so that the adhesive property is improved.
The viscosity of the resin A is controlled to be 5000-3Kg. The resin A adopts polyurethane resin, acrylic resin and the like.
The viscosity of the resin B is controlled to 3000-25000 mPa.S, and the resin B is a tackifying resin.
The adhesive is a non-aldehyde adhesive, is environment-friendly and healthy, has no toxic or harmful effect on human bodies, and is preferably a polyurethane adhesive or an acrylate adhesive.
The preparation method of the platinum-catalyzed silica gel 2 comprises the following steps:
adding the platinum catalyst and the resin mixture into an ultrasonic stirrer at the temperature of 23 +/-2 ℃, the relative humidity of 50-60 RH% and hundred-grade dustless conditions, ultrasonically stirring for 5-8h, standing for 20-25h, ultrasonically stirring again for 4-8h, detecting whether the mixture contains an ammonia sulfur compound, and adding a proper amount of adhesive if the mixture does not contain the ammonia sulfur compound, so as to improve the long-time boiling resistance of the material.
The platinum-catalyzed silica gel 2 meets the requirements of boiling for 1000 hours at 95 ℃ without precipitates, ammonia sulfur compounds, metallic impurity ions of Al, Cu, Ni, Cd, Cr and Pb with the element content less than 10ppm and Fe content less than 30 ppm.
The application method of the platinum-catalyzed silica gel 2 comprises the following steps:
and uniformly coating the mixture on the surface of the PEN substrate 3 by using a slit coater, or adhering the mixture on the surface of the PEN substrate 3 by glue or transferring the mixture to the surface of the PEN substrate 3 by using a release film, and curing.
Example 1
As shown in fig. 1, a novel functional pressure sensitive adhesive composite structure comprises an upper protective film 1, a platinum catalytic silica gel 2, a PEN substrate 3 and a lower protective film 4 which are sequentially arranged from top to bottom, wherein the PEN substrate 3 is coated with the platinum catalytic silica gel 2, the viscosity can reach 1500g/in, and the novel functional pressure sensitive adhesive composite structure is not easy to fall off and is suitable for attaching a CCM (a CCM is a proton exchange film with catalyst coated on both sides).
The raw materials for preparing the platinum-catalyzed silica gel 2 comprise a platinum catalyst and a resin mixture, wherein the weight ratio of the platinum catalyst to the resin mixture is 1.5: 600.
The resin mixture comprises the following components in parts by weight:
120 parts of resin
Ethyl acetate solvent 220 parts
130 parts of polyurethane adhesive
130 parts of silica gel
The resin comprises a resin A with a hydroxyl functional group and a resin B with a carboxyl functional group, the weight ratio of the resin A to the resin B is 1:1, the stoichiometric ratio of the hydroxyl functional group in the resin A can react with the carboxyl functional group in the resin B, and the stoichiometric ratio of the carboxyl functional group in the resin B can react with the hydroxyl functional group in the resin A to form a network structure, so that the adhesive property is improved.
The resin A adopts polyurethane resin, the viscosity is controlled to be 10000 mPa.S, the number average molecular weight is controlled to be 25000-50000, the acidity is controlled to be 200-400 equivalent/103Kg。
The resin B is a tackifying resin, and the viscosity is controlled to be 5000-.
The preparation method of the platinum-catalyzed silica gel 2 comprises the following steps:
ultrasonically stirring a mixed material consisting of 1.5 parts of platinum catalyst, 120 parts of resin, 220 parts of ethyl acetate solvent, 130 parts of polyurethane adhesive and 130 parts of silica gel for 5 hours by using an ultrasonic stirrer under the conditions of the temperature of 23 ℃ and the relative humidity of 50RH percent and hundred-grade dustless conditions, standing for 24 hours, stirring for 5 hours again, detecting whether the mixed material contains an ammonia sulfur compound, and adding a proper amount of adhesive if the mixed material does not contain the ammonia sulfur compound to ensure that the mixed material is resistant to boiling for a long time.
The platinum-catalyzed silica gel 2 meets the requirements of boiling for 1000 hours at 95 ℃ without precipitates, ammonia sulfur compounds, metallic impurity ions of Al, Cu, Ni, Cd, Cr and Pb with the element content less than 10ppm and Fe content less than 30 ppm.
The application method of the platinum-catalyzed silica gel 2 comprises the following steps:
and (3) uniformly coating the surface of the PEN substrate 3 by using a slit coater, and curing.
Example 2
As shown in fig. 1, a novel functional pressure-sensitive adhesive composite structure comprises an upper protective film 1, a platinum-based catalytic silica gel 2, a PEN substrate 3 and a lower protective film 4, which are sequentially arranged from top to bottom, wherein the platinum-based catalytic silica gel 2 is coated on the PEN substrate 3, the viscosity can reach 1500g/in, and the novel functional pressure-sensitive adhesive composite structure is not easy to fall off and is suitable for attaching a CCM (CCM is a proton exchange film with catalyst coated on two sides).
The preparation raw material of the platinum-catalyzed silica gel 2 comprises a platinum catalyst and a resin mixture, wherein the weight ratio of the platinum catalyst to the resin mixture is 1: 400.
The resin mixture comprises the following components in parts by weight:
80 parts of resin
146 portions of solvent
87 portions of adhesive
87 parts of silica gel
The resin comprises a resin A with a hydroxyl functional group and a resin B with a carboxyl functional group, the weight ratio of the resin A to the resin B is 1:1, the stoichiometric ratio of the hydroxyl functional group in the resin A can react with the carboxyl functional group in the resin B, and the stoichiometric ratio of the carboxyl functional group in the resin B can react with the hydroxyl functional group in the resin A to form a network structure, so that the adhesive property is improved.
The viscosity of the resin A is controlled to be 5000-3Kg. The resin A adopts polyurethane resin, acrylic resin and the like.
The viscosity of the resin B was controlled to 3000-25000 mPaS. The resin B is a tackifying resin.
The adhesive is a non-aldehyde adhesive, is environment-friendly and healthy, has no toxic or harmful effect on human bodies, and is preferably a polyurethane adhesive or an acrylate adhesive.
The preparation method of the platinum-catalyzed silica gel 2 comprises the following steps:
ultrasonically stirring a mixed material consisting of 1 part of platinum catalyst, 80 parts of resin, 146 parts of ethyl acetate solvent, 87 parts of polyurethane adhesive and 87 parts of silica gel for 5 hours by using an ultrasonic stirrer under the conditions of temperature of 23 +/-2 ℃, relative humidity of 50-60 RH% and hundred-grade dustless condition, standing for 25 hours, stirring for 5 hours again, detecting whether the mixed material contains an ammonia sulfur compound, and adding a proper amount of adhesive if the mixed material does not contain the ammonia sulfur compound to enable the mixed material to resist boiling for a long time. The platinum-gold catalytic silica gel 2 meets the requirements of boiling for 1000 hours at 95 ℃ without precipitates, ammonia-sulfur compounds, metallic impurity ions of Al, Cu, Ni, Cd, Cr and Pb with the element content less than 10ppm and Fe with the content less than 30 ppm.
The application method of the platinum-catalyzed silica gel 2 comprises the following steps:
and (3) uniformly coating the surface of the PEN substrate 3 by using a slit coater, and curing.
The same as in example 1.
Example 3
As shown in fig. 1, a novel functional pressure-sensitive adhesive composite structure comprises an upper protective film 1, a platinum-based catalytic silica gel 2, a PEN substrate 3 and a lower protective film 4, which are sequentially arranged from top to bottom, wherein the platinum-based catalytic silica gel 2 is coated on the PEN substrate 3, the viscosity can reach 1500g/in, and the novel functional pressure-sensitive adhesive composite structure is not easy to fall off and is suitable for attaching a CCM (CCM is a proton exchange film with catalyst coated on two sides).
The preparation raw materials of the platinum-catalyzed silica gel 2 comprise the following components in parts by weight:
160 parts of resin
294 parts of solvent
173 parts of adhesive
173 parts of silica gel
The resin comprises a resin A with a hydroxyl functional group and a resin B with a carboxyl functional group, the weight ratio of the resin A to the resin B is 1:1, the stoichiometric ratio of the hydroxyl functional group in the resin A can react with the carboxyl functional group in the resin B, and the stoichiometric ratio of the carboxyl functional group in the resin B can react with the hydroxyl functional group in the resin A to form a network structure, so that the adhesive property is improved.
The viscosity of the resin A is controlled to be 5000-3Kg. The resin A adopts polyurethane resin, acrylic resin and the like.
The viscosity of the resin B is controlled to 3000-25000 mPa.S, and the resin B is a tackifying resin.
The adhesive is a non-aldehyde adhesive, is environment-friendly and healthy, has no toxic or harmful effect on human bodies, and is preferably a polyurethane adhesive.
The preparation method of the platinum-catalyzed silica gel 2 comprises the following steps:
under the conditions of 25 ℃ of temperature, 55RH percent of relative humidity and hundred-grade dust-free conditions, adding 2 parts of platinum catalyst, 160 parts of resin, 294 parts of solvent, 173 parts of adhesive and 173 parts of silica gel into an ultrasonic stirrer, ultrasonically stirring for 6 hours, standing for 24 hours, ultrasonically stirring again for 5 hours, detecting whether the mixture contains an ammonia sulfur compound, and adding a proper amount of adhesive if the mixture does not contain the ammonia sulfur compound, thereby improving the long-time boiling resistance of the material.
The platinum-catalyzed silica gel 2 meets the requirements of boiling for 1000 hours at 95 ℃ without precipitates, ammonia sulfur compounds, metallic impurity ions of Al, Cu, Ni, Cd, Cr and Pb with the element content less than 10ppm and Fe content less than 30 ppm.
The application method of the platinum-catalyzed silica gel 2 comprises the following steps:
and (3) uniformly coating the surface of the PEN substrate 3 by using a slit coater, and curing.
The same as in example 1.
Comparative example 1
The platinum-catalyzed silica gel obtained was purchased commercially.
The platinum-catalyzed silica gels of examples 1-3 and comparative example 1 were evaluated for performance according to the existing test standards, and the test results are shown in table 1.
TABLE 1
As is clear from Table 1, the platinum-catalyzed silicone gels 2 prepared in examples 1 to 3 had superior adhesion to the conventional products, had a relatively high peel strength from the PEN substrate 3, were not easily released even after long-term use, and had a low content of metal impurities.
The parts or structures of the invention which are not described in detail can be the same as those in the prior art or the existing products, and are not described in detail herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A novel functional pressure-sensitive adhesive composite structure is characterized by comprising an upper protective film, a platinum catalytic silica gel, a PEN base material and a lower protective film which are sequentially arranged from top to bottom, wherein the preparation raw materials of the platinum catalytic silica gel comprise a platinum catalyst and a resin mixture, and the weight ratio of the platinum catalyst to the resin mixture is (1-2) to (400-800).
2. The novel functional pressure-sensitive adhesive composite structure according to claim 1, wherein the resin mixture comprises the following components: resin, solvent, adhesive and silica gel.
3. The novel functional pressure-sensitive adhesive composite structure according to claim 2, wherein the weight ratio of the adhesive to the silica gel is 1:1, and the weight ratio of the sum of the weights of the adhesive and the silica gel to the resin is 2.1-2.2.
4. The novel functional pressure-sensitive adhesive composite structure of claim 2, wherein the resin comprises a resin A with hydroxyl functional groups and a resin B with carboxyl functional groups, the weight ratio of the resin A to the resin B is 1:1, the stoichiometric ratio of the hydroxyl functional groups in the resin A can react with the carboxyl functional groups in the resin B, and the stoichiometric ratio of the carboxyl functional groups in the resin B can react with the hydroxyl functional groups in the resin A to form a network structure.
5. The novel functional pressure-sensitive adhesive composite structure as claimed in claim 4, wherein the viscosity of the resin A is controlled to be 5000-3Kg。
6. The novel functional pressure-sensitive adhesive composite structure as claimed in claim 4, wherein the viscosity of the resin B is controlled to 3000-25000 mPa-S.
7. The novel functional pressure-sensitive adhesive composite structure as claimed in claim 1, wherein the preparation method of the platinum-catalyzed silica gel 2 comprises the following steps:
adding a platinum catalyst and a resin mixture into an ultrasonic stirrer under the conditions of temperature of 23 +/-2 ℃, relative humidity of 50-60 RH% and hundred-grade dust-free, ultrasonically stirring for 5-8h, standing for 20-25h, and ultrasonically stirring again for 4-8h, wherein the platinum catalytic silica gel meets the requirements of water boiling at 95 ℃ for 1000h, has no precipitate, no ammonia sulfur compound, metal impurity ions of Al, Cu, Ni, Cd, Cr and Pb with element content of less than 10ppm and Fe with element content of less than 30ppm, and has no sulfur and ammonia compounds.
8. The novel functional pressure-sensitive adhesive composite structure of claim 1, wherein the application method of the platinum-catalyzed silica gel comprises the following steps:
and uniformly coating the mixture on the surface of the PEN substrate by using a slit coater, or adhering the mixture on the surface of the PEN substrate by glue or transferring the mixture to the surface of the PEN substrate by using a release film, and curing.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102816546A (en) * | 2012-08-13 | 2012-12-12 | 苏州联科合成材料有限公司 | Preparation method for acrylate pressure sensitive adhesive providing good adhesion for low energy surface |
| CN110484156A (en) * | 2019-07-26 | 2019-11-22 | 新纶科技（常州）有限公司 | A kind of 3D curved surface mobile phone TPU silicone protective film and preparation method thereof |
| CN112592673A (en) * | 2020-12-14 | 2021-04-02 | 中国科学院大连化学物理研究所 | Novel protective film and batch preparation method and application thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102816546A (en) * | 2012-08-13 | 2012-12-12 | 苏州联科合成材料有限公司 | Preparation method for acrylate pressure sensitive adhesive providing good adhesion for low energy surface |
| CN110484156A (en) * | 2019-07-26 | 2019-11-22 | 新纶科技（常州）有限公司 | A kind of 3D curved surface mobile phone TPU silicone protective film and preparation method thereof |
| CN112592673A (en) * | 2020-12-14 | 2021-04-02 | 中国科学院大连化学物理研究所 | Novel protective film and batch preparation method and application thereof |
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