CN110628355A - Double-sided mucosa reducing film and preparation method thereof - Google Patents
Double-sided mucosa reducing film and preparation method thereof Download PDFInfo
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- CN110628355A CN110628355A CN201910795565.6A CN201910795565A CN110628355A CN 110628355 A CN110628355 A CN 110628355A CN 201910795565 A CN201910795565 A CN 201910795565A CN 110628355 A CN110628355 A CN 110628355A
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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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
- C09J127/00—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 a halogen; Adhesives based on derivatives of such polymers
- C09J127/02—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 a halogen; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J127/04—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 a halogen; Adhesives based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C09J127/06—Homopolymers or copolymers of vinyl chloride
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- 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
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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
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09J161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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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
- C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
- C09J167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
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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
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
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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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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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
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
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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
- C08K2201/017—Additives being an antistatic agent
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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
- C09J2301/124—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 on both sides of the carrier, e.g. double-sided adhesive tape
- C09J2301/1242—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 on both sides of the carrier, e.g. double-sided adhesive tape the opposite adhesive layers being different
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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
- C09J2301/314—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive layer and/or the carrier being conductive
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Abstract
The invention relates to the technical field of protective films, in particular to a double-sided anti-adhesion film and a preparation method thereof. The double-sided anti-adhesive film sequentially comprises: the adhesive comprises a first release film layer, an ultraviolet visbreaking acrylic adhesive layer, a flexible substrate layer, a thermal visbreaking adhesive layer and a second release film layer. The ultraviolet viscosity-reducing acrylic adhesive layer has the advantages of large peeling force before ultraviolet irradiation, low peeling force after ultraviolet irradiation and no residual adhesive, and the thermal viscosity-reducing acrylic adhesive layer has the advantages of large peeling force at normal temperature and low residual adhesive at high temperature. The double-sided adhesive reducing film prepared by the invention can be easily peeled off in a heating and ultraviolet irradiation mode, has no adhesive residue, and cannot damage an adherend. Because the heat-release adhesive layer comprises the antistatic agent, the double-sided adhesive-release film has an antistatic function at the same time.
Description
Technical Field
The invention relates to the technical field of protective films, in particular to a double-sided anti-adhesion film and a preparation method thereof.
Background
In the manufacturing process of large scale integrated circuits and semiconductor devices, the essential base material is a semiconductor chip, which is processed from a single crystal silicon wafer. The monocrystalline silicon wafer is called wafer for short. When the wafer material is cut and ground, a special pressure sensitive adhesive tape is needed for bonding and fixing to play a role of protection and support. After the processing is finished, the processed wafer slices can be easily and completely peeled off from the fixing glue without influencing the wafer material.
A special adhesive tape which has a high adhesive strength when used and can rapidly and completely lose its adhesiveness after handling is called a pressure-sensitive adhesive tape. The anti-sticking adhesive tape in the prior art still has a certain adhesive residue phenomenon in the stripping process, which is not beneficial to the subsequent processing technology.
Disclosure of Invention
In order to solve the problem that the traditional double-sided adhesive tape is easy to have the adhesive residue phenomenon, the technical problem mainly solved by the embodiment of the invention is to provide the double-sided adhesive reducing film which can be easily peeled off in a heating and ultraviolet irradiation mode, has no adhesive residue and cannot damage an adherend.
In order to solve the above technical problem, one technical solution adopted by the embodiment of the present invention is: providing a double-sided anti-adhesive film comprising, in order: the adhesive comprises a first release film layer, an ultraviolet viscosity-reducing acrylic adhesive layer, a flexible base material layer, a thermal viscosity-reducing adhesive layer and a second release film layer, wherein the thermal viscosity-reducing adhesive comprises the following components in parts by weight:
optionally, the ultraviolet viscosity-reducing acrylic adhesive comprises the following components in parts by weight:
optionally, the resin is at least one of acrylic resin, alkyd resin, synthetic fatty acid resin, phenolic resin, and polyvinyl chloride resin.
Optionally, the thickness of the flexible substrate layer is 50-100 μm;
the thickness of the first release film layer and the second release film layer is 50-75 μm;
the thickness of the ultraviolet adhesive layer and the high-temperature adhesive layer is 10-20 μm.
Optionally, the organic solvent is at least one of ethyl acetate, n-butyl acetate, toluene, ethylenediamine, ethanol, styrene, perchloroethylene, trichloroethylene, ethylene glycol ether, and triethanolamine.
Optionally, the thermally-induced debonding microspheres are one of polyurethane, polyester and polyacrylonitrile.
Optionally, the curing agent is at least one of TDI, IPDI, MDI blocked isocyanate curing agent, HDI and IPDI isocyanurate curing agent.
In order to solve the above technical problem, another technical solution adopted by the embodiment of the present invention is: providing a method for preparing the double-sided mucosa, wherein the preparation method comprises the following steps:
s201: carrying out corona treatment on the surface of the flexible base material to increase the surface tension of the flexible base material, wherein the power of the corona treatment is 1.0-5.0KW, and the running speed is 10-30 m/min;
s202: coating the ultraviolet adhesive on the first surface of the flexible base material, placing the flexible base material in an oven at the temperature of 70-120 ℃, baking the flexible base material for 100-120 seconds to form an ultraviolet adhesive layer, and attaching a first release film;
s203: and coating the thermal viscosity reducing adhesive on the second surface of the flexible substrate, placing the flexible substrate in an oven at the temperature of 30-60 ℃, baking for 120s, forming the thermal viscosity reducing adhesive layer after the thermal viscosity reducing adhesive is cured, and attaching a second release film.
Optionally, the method for preparing the thermal viscosity-reducing adhesive comprises the following steps:
s301: uniformly mixing 25-38.5 parts of the organic solvent and 10-20 parts of the thermally-induced debonding microspheres to obtain a mixed solution;
s302: sequentially adding 1-5 parts of the antistatic agent and 35-55 parts of the resin into the mixed solution, and stirring for 20min at the rotating speed of 700-;
s303: and adding 0.1-0.2 part of the initiator and 0.5-1.5 parts of the curing agent, and stirring at the rotating speed of 600r/min for 15min to prepare the thermal viscosity-reducing adhesive.
Optionally, the method for preparing the ultraviolet-debonded acrylic adhesive comprises the following steps:
s401: uniformly mixing 35-50 parts of the acrylate reaction monomer and 2-3 parts of the cross-linking agent;
s402: firstly, 0.05 part of the photoinitiator is added to initiate polymerization reaction, the temperature is controlled to be 60-100 ℃, and the stirring reaction is carried out for 0.5-2 hours. Then adding 0.05-1.45 parts of the photoinitiator for continuous reaction for 0.5-2 h;
s403: and (2) after the polymerization reaction in the step S402 is complete, cooling, adding 35-50 parts of the reactive diluent and 0.5-1.5 parts of the anti-aging agent, adding 1-3 parts of the isocyanate curing agent and 2-16 parts of the organic solvent, and uniformly stirring to obtain the ultraviolet viscosity-losing acrylic adhesive.
The beneficial effects of the embodiment of the invention are as follows: different from the prior art, the double-sided mucosa reducing film disclosed by the invention sequentially comprises: the adhesive comprises a first release film layer, an ultraviolet visbreaking acrylic adhesive layer, a flexible substrate layer, a thermal visbreaking adhesive layer and a second release film layer. The ultraviolet viscosity-reducing acrylic adhesive layer has the advantages of large peeling force before ultraviolet irradiation, low peeling force after ultraviolet irradiation and no residual adhesive, and the thermal viscosity-reducing acrylic adhesive layer has the advantages of large peeling force at normal temperature and low residual adhesive at high temperature. Because the heat-release adhesive layer comprises the antistatic agent, the double-sided adhesive-release film has an antistatic function at the same time.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a double-sided mucosa reduction membrane according to the present invention;
FIG. 2 is a schematic flow diagram of an example of the preparation of a double-sided mucosa according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. It should be noted that, if not conflicted, the various features of the embodiments of the invention may be combined with each other within the scope of protection of the invention. Additionally, while a logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in an order different than in the flowcharts.
Referring to fig. 1, the double-sided pressure-reducing adhesive film 100 of the embodiment of the invention sequentially includes a first release film layer 101, an ultraviolet debonding acrylic adhesive layer 102, a flexible substrate layer 103, a thermal debonding adhesive layer 104, and a second release film layer 105. After the ultraviolet ray is irradiated on the ultraviolet ray non-stick acrylic adhesive layer 102, the original high viscosity is reduced to low viscosity, so that the ultraviolet ray non-stick acrylic adhesive layer is easy to peel from the surface of the material. The thermal debonding adhesive layer 104 shows high adhesive force at normal temperature, has good adhesiveness, and can be bonded as a common adhesive tape. When the film needs to be peeled, the thermal adhesive losing layer 104 is heated to a certain temperature, so that the film is easily peeled from the original high viscosity to the low viscosity without adhesive residue and damage to an attached object. The first release film layer 101 and the second release film layer 105 are respectively used for protecting the ultraviolet adhesive layer 102 and the thermal adhesive layer 104 to prevent the ultraviolet adhesive layer 102 and the thermal adhesive layer 104 from failing before use, and to ensure that the adhesive force and the peeling force are not affected by the outside.
In some embodiments, the thickness of the first release film layer 101 and the second release film layer 105 is 50-75 μm, the thickness of the uv-debonding acrylic adhesive layer 102 is 10-20 μm, the thickness of the flexible substrate layer 103 is 50-100 μm, and the thickness of the thermal-debonding adhesive layer 104 is 10-20 μm.
The flexible substrate layer 103 used in the present invention may be made of any suitable plastic material. For example, various films such as polyvinyl chloride (PVC), Polycarbonate (PC), PET, PMMA, Polyethylene (PE), polypropylene (PP), polyvinyl alcohol (PVA), Polyether Sulfone (PEs), TAC, cellulose triacetate, and the like. In some embodiments, in order to improve the adhesion between the uv-debonding acrylic adhesive layer 102, the thermal debonding adhesive layer 104 and the flexible substrate layer 103, the flexible substrate layer 103 may be subjected to a surface treatment. For example, alkali treatment, corona treatment, plasma treatment, and surface treatment such as coating of a surfactant, silane coupling agent, and the like.
The first release film layer 101 and the second release film layer 105 of the present invention may be made of: one or two of PE, PET, OPP (o-phenylphenol), PS, PMMA, PC, BOPP (biaxially oriented polypropylene), PVC, PTFE (polytetrafluoroethylene) and silicone.
In the embodiment, the thermal-debonding adhesive comprises the following components in parts by weight: 35-55 parts of resin; organic solvent: 25-38.5 parts; antistatic agent: 1-5 parts; thermally induced debonding of microspheres: 10-20 parts; curing agent: 0.5-1.5 parts; initiator: 0.1 to 0.2 portion.
In some embodiments, the initiator is one of a peroxide or an azobisisobutyronitrile initiator. In some embodiments, the peroxide is any one of benzoyl peroxide, tert-butyl 2-ethylhexyl peroxide, 1 '-bis (tert-amylperoxy) cyclohexane, 1' -bis (tert-butylperoxy) -3, 3, 5-trimethylcyclohexane, tert-butyl peroxybenzoate, dicumyl peroxide, di-tert-amyl peroxide, and di-tert-amyl peroxide.
In some embodiments, the thermally-induced debonding microspheres are any one of polyurethane, polyester and polyacrylonitrile, the average diameter of the microspheres is 12-53 μm, the thermal expansion temperature of the microspheres is 70-120 ℃, the protective film and the protected object are not easy to automatically separate at normal temperature and in the processing process of the protected object after being bonded, and when the protective film and the protected object need to be separated, the external temperature is only increased to 80-110 ℃. In other embodiments, the thermally-debonded microspheres are core-shell structures, the shell is a thermoplastic acrylic resin polymer, the core is microsphere particles composed of alkane gas, the diameter of the particles is 16-55 microns, and the foaming temperature range of the microspheres is 75-180 ℃.
In some embodiments, the curing agent is a mixture of one or more of TDI, IPDI, MDI blocked isocyanate curing agent, HDI, and IPDI isocyanurate curing agent.
In some embodiments, the antistatic agent includes one or more of an organic antistatic agent, an inorganic filler type antistatic agent, and a composite type antistatic agent. More preferred antistatic agents are one or more of GW-2008 antistatic agents, GW-2006 antistatic agents, and GW-3000C antistatic agents. The inorganic filler type antistatic agent comprises one or more of nano graphite powder, graphene, carbon black, carbon nano tubes and nano silver wires. The thermally-induced debonding microspheres in the invention can form an isolation structure in the thermally-induced debonding adhesive layer, so that the antistatic agent is distributed among the thermally-induced debonding microspheres, the percolation threshold of the antistatic agent is reduced, and a better antistatic effect can be achieved by adding a lower content of the antistatic agent.
In some embodiments, a method of making a uv-vis acrylic adhesive comprises the steps of:
s401: uniformly mixing 35-50 parts of acrylate reaction monomer and 2-3 parts of cross-linking agent;
s402: firstly, 0.05 part of the photoinitiator is added to initiate polymerization reaction, the temperature is controlled to be 60-100 ℃, and the stirring reaction is carried out for 0.5-2 hours. Adding 0.05-1.45 parts of photoinitiator for continuous reaction for 0.5-2 h;
s403: and (3) after the polymerization reaction in the step S402 is complete, cooling, adding 35-50 parts of reactive diluent and 0.5-1.5 parts of anti-aging agent, adding 2-3 parts of isocyanate curing agent and 2-16 parts of organic solvent, and uniformly stirring to obtain the ultraviolet viscosity-losing acrylic adhesive.
In the embodiment, the ultraviolet viscosity-losing acrylic adhesive comprises the following components in parts by weight: 35-50 parts of acrylate reaction monomer; 35-50 parts of a reactive diluent; 0.1-1.5 parts of photoinitiator; 2-3 parts of a cross-linking agent; 2-3 parts of an isocyanate curing agent; 2-16 parts of an organic solvent; 0.5-1.5 parts of anti-aging agent; 1-5 parts of a defoaming agent; and 1-4 parts of a leveling agent. The ultraviolet adhesive can form firm adhesive force under a small acting force, and can be tightly adhered to an adherend without other means. The adhesive has high adhesion and peeling strength before ultraviolet irradiation, and has bottom peeling strength after ultraviolet irradiation, so that the adhesive is easily peeled from an adherend.
In some embodiments, the organic solvent is at least one of ethylenediamine, ethanol, styrene, perchloroethylene, trichloroethylene, ethylene glycol ether, triethanolamine.
In some embodiments, a method of uv-debonding an acrylic adhesive comprises the steps of:
s401: uniformly mixing 35-50 parts of acrylate reaction monomer and 2-3 parts of cross-linking agent;
s402: firstly, 0.05 part of the photoinitiator is added to initiate polymerization reaction, the temperature is controlled to be 60-100 ℃, and the stirring reaction is carried out for 0.5-2 hours. Adding 0.05-1.45 parts of photoinitiator for continuous reaction for 0.5-2 h;
s403: and (3) after the polymerization reaction in the step S402 is complete, cooling, adding 35-50 parts of reactive diluent and 0.5-1.5 parts of anti-aging agent, adding 2-3 parts of isocyanate curing agent and 2-16 parts of organic solvent, and uniformly stirring to obtain the ultraviolet viscosity-losing acrylic adhesive.
The embodiment of the invention also provides a preparation scheme of the double-sided mucosa reduction film, and please refer to fig. 2. Fig. 2 is a schematic flow chart of the preparation of the double-sided mucosa reduction provided by the embodiment of the invention, and the method comprises the following steps:
s201: and carrying out corona treatment on the surface of the flexible base material to increase the surface tension of the base material, wherein the power of the corona treatment is 1.0-5.0KW, and the running speed is 10-30 m/min.
In this example, both side surfaces of the flexible base material were subjected to corona treatment. Under the action of a strong electric field, various plasmas generated by the corona treatment device accelerate the impact on the surface of the flexible base material, so that chemical bonds of molecules on the surface of the flexible base material are induced to break and degrade, and the surface roughness of the flexible base material is increased. During corona discharge, a large amount of ozone is also generated. In one aspect, ozone is a strong oxidizer that oxidizes molecules on the surface of the plastic to produce carbonyl compounds, peroxy compounds, and the like. On the other hand, the corona treatment can also remove oil stain, water vapor, dust and dirt and the like on the surface of the plastic substrate. The surface wettability and the adhesion performance of the flexible base material layer subjected to corona treatment are obviously improved, and the adhesion between the flexible base material layer and the ultraviolet adhesive-losing acrylic adhesive layer and the thermal adhesive-losing adhesive layer is good.
S202: coating the ultraviolet debonding acrylic adhesive on the first surface of the flexible base material, placing the flexible base material in an oven at the temperature of 70-120 ℃, baking for 100-120s to form an ultraviolet debonding acrylic adhesive layer, and attaching a release film;
as a method for coating the uv-abhesive acrylic adhesive on the flexible substrate, a coating method such as air knife coating, blade coating, bar coating, blade coating, extrusion coating, dip coating, reverse roll coating, transfer roll coating, gravure coating, roll lick coating, cast coating, spray coating, curtain coating, calender coating, extrusion coating, or the like can be used.
Sending the flexible base material of the coated ultraviolet viscosity-losing acrylic adhesive into an oven for pre-baking, wherein the pre-baking temperature gradient is as follows: pre-baking time at 70 deg.C, 80 deg.C, 100 deg.C, 120 deg.C and 110 deg.C is the same for each temperature; after the solvent in the coating is volatilized, an organic silicon release film is attached, and the thickness of the dry film is controlled to be 10-20 mu m.
S203: covering the thermal viscosity reducing adhesive on the surface of the substrate, placing the substrate in an oven at the temperature of 30-60 ℃, baking for 120s, forming a thermal viscosity reducing adhesive layer after the thermal viscosity reducing adhesive is cured, and attaching the release film.
As a method for applying the viscosity reducing adhesive agent to the flexible substrate, coating methods such as air knife coating, blade coating, bar coating, blade coating, extrusion coating, dip coating, reverse roll coating, transfer roll coating, gravure coating, roll lick coating, cast coating, spray coating, curtain coating, calender coating, and extrusion coating can be used.
Sending the flexible base material coated with the thermal viscosity reducing adhesive agent into an oven for pre-baking, wherein the pre-baking temperature gradient is as follows: 30 ℃, 40 ℃, 50 ℃, 60 ℃ and 50 ℃, and the pre-baking time at each temperature is the same. After the solvent in the coating is volatilized, an organic silicon release film is attached, and the thickness of the dry film is controlled to be 10-20 mu m.
In some embodiments of the present invention, in order to increase the release force of the silicone release film, the silicone release film is subjected to plasma treatment, fluorine coating treatment or silicon coating treatment, and then a release agent is coated on the surface of the silicone release film, so that the silicone release film exhibits extremely light and stable release force for various adhesives.
It should be understood, however, that the description herein and the accompanying drawings illustrate preferred embodiments of the present invention, but the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for the purpose of providing a more thorough understanding of the present disclosure. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A double-sided anti-adhesive film, comprising in order: the adhesive comprises a first release film layer, an ultraviolet viscosity-reducing acrylic adhesive layer, a flexible base material layer, a thermal viscosity-reducing adhesive layer and a second release film layer, wherein the thermal viscosity-reducing adhesive comprises the following components in parts by weight:
2. the double-sided anti-adhesive film according to claim 1, wherein the ultraviolet anti-adhesive acrylic adhesive comprises the following components in parts by weight:
3. the double-sided pressure-reducing film according to claim 1 or 2, wherein the resin is at least one of an acrylic resin, an alkyd resin, a synthetic fatty acid resin, a phenolic resin, and a polyvinyl chloride resin.
4. The double-sided pressure-reducing film according to claim 3, wherein the thickness of the flexible substrate layer is 50-100 μm;
the thickness of the first release film layer and the second release film layer is 50-75 μm;
the thickness of the ultraviolet adhesive layer and the high-temperature adhesive layer is 10-20 μm.
5. The double-sided mucosa according to claim 3, wherein the organic solvent is at least one of ethyl acetate, n-butyl acetate, toluene, ethylene diamine, ethanol, styrene, perchloroethylene, trichloroethylene, ethylene glycol ether and triethanolamine.
6. The double-sided mucosa reducer of claim 5, wherein the thermally de-bonded microspheres are one of polyurethane, polyester, and polyacrylonitrile.
7. The double-sided transmucosal reduction of claim 6, wherein said curing agent is at least one of TDI, IPDI, MDI blocked isocyanate curing agent, HDI, and IPDI isocyanurate curing agent.
8. A method for preparing a double-sided mucosa reducing membrane according to any one of claims 1 to 7, comprising the steps of:
s201: carrying out corona treatment on the surface of the flexible base material to increase the surface tension of the flexible base material, wherein the power of the corona treatment is 1.0-5.0KW, and the running speed is 10-30 m/min;
s202: coating the ultraviolet adhesive on the first surface of the flexible base material, placing the flexible base material in an oven at the temperature of 70-120 ℃, baking the flexible base material for 100-120 seconds to form an ultraviolet adhesive layer, and attaching a first release film;
s203: and coating the thermal viscosity reducing adhesive on the second surface of the flexible substrate, placing the flexible substrate in an oven at the temperature of 30-60 ℃, baking for 120s, forming the thermal viscosity reducing adhesive layer after the thermal viscosity reducing adhesive is cured, and attaching a second release film.
9. The method for preparing a double-sided visbreaking film according to claim 8, wherein the method for preparing the thermal visbreaking adhesive comprises the following steps:
s301: uniformly mixing 25-38.5 parts of the organic solvent and 10-20 parts of the thermally-induced debonding microspheres to obtain a mixed solution;
s302: sequentially adding 1-5 parts of the antistatic agent and 35-55 parts of the resin into the mixed solution, and stirring for 20min at the rotating speed of 700-;
s303: and adding 0.1-0.2 part of the initiator and 0.5-1.5 parts of the curing agent, and stirring at the rotating speed of 600r/min for 15min to prepare the thermal viscosity-reducing adhesive.
10. The preparation method of the double-sided anti-adhesive film according to claim 8, wherein the preparation method of the ultraviolet visbreaking acrylic adhesive comprises the following steps:
s401: uniformly mixing 35-50 parts of the acrylate reaction monomer and 2-3 parts of the cross-linking agent;
s402: firstly, 0.05 part of the photoinitiator is added to initiate polymerization reaction, the temperature is controlled to be 60-100 ℃, and the stirring reaction is carried out for 0.5-2 hours. Then adding 0.05-1.45 parts of the photoinitiator for continuous reaction for 0.5-2 h;
s403: and (2) after the polymerization reaction in the step S402 is complete, cooling, adding 35-50 parts of the reactive diluent and 0.5-1.5 parts of the anti-aging agent, adding 2-3 parts of the isocyanate curing agent and 2-16 parts of the organic solvent, and uniformly stirring to obtain the ultraviolet viscosity-losing acrylic adhesive.
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| CN111117523A (en) * | 2020-01-08 | 2020-05-08 | 南京工业大学 | Emulsion type diene-based copolymer UV visbreaking adhesive and preparation method thereof |
| CN111748296A (en) * | 2020-07-16 | 2020-10-09 | 惠州艺都文化用品有限公司 | Thermal laminating film for substrate surface |
| CN112898913A (en) * | 2021-01-27 | 2021-06-04 | 江苏晶华新材料科技有限公司 | Thermal viscosity reduction protective adhesive tape and preparation process thereof |
| CN112967601A (en) * | 2021-02-04 | 2021-06-15 | 武汉华星光电半导体显示技术有限公司 | Manufacturing method of protective film and display panel |
| CN113088209A (en) * | 2021-04-07 | 2021-07-09 | 广东硕成科技有限公司 | Easily-stripped UV (ultraviolet) anti-adhesion protective film and preparation method thereof |
| CN113150709A (en) * | 2021-05-07 | 2021-07-23 | 东莞市亮雅塑料制品有限公司 | Acrylic acid thermal viscosity-reducing protective film and preparation method thereof |
| CN113512382A (en) * | 2021-07-28 | 2021-10-19 | 深圳市化讯半导体材料有限公司 | Peelable adhesive and preparation method and application thereof |
| CN114774020A (en) * | 2022-05-07 | 2022-07-22 | 广东莱尔新材料科技股份有限公司 | Composite wafer protective film and preparation method thereof |
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| CN111117523A (en) * | 2020-01-08 | 2020-05-08 | 南京工业大学 | Emulsion type diene-based copolymer UV visbreaking adhesive and preparation method thereof |
| CN111748296A (en) * | 2020-07-16 | 2020-10-09 | 惠州艺都文化用品有限公司 | Thermal laminating film for substrate surface |
| CN112898913A (en) * | 2021-01-27 | 2021-06-04 | 江苏晶华新材料科技有限公司 | Thermal viscosity reduction protective adhesive tape and preparation process thereof |
| CN112967601A (en) * | 2021-02-04 | 2021-06-15 | 武汉华星光电半导体显示技术有限公司 | Manufacturing method of protective film and display panel |
| CN113088209A (en) * | 2021-04-07 | 2021-07-09 | 广东硕成科技有限公司 | Easily-stripped UV (ultraviolet) anti-adhesion protective film and preparation method thereof |
| CN113088209B (en) * | 2021-04-07 | 2021-12-03 | 广东硕成科技有限公司 | Easily-stripped UV (ultraviolet) anti-adhesion protective film and preparation method thereof |
| CN113150709A (en) * | 2021-05-07 | 2021-07-23 | 东莞市亮雅塑料制品有限公司 | Acrylic acid thermal viscosity-reducing protective film and preparation method thereof |
| CN113512382A (en) * | 2021-07-28 | 2021-10-19 | 深圳市化讯半导体材料有限公司 | Peelable adhesive and preparation method and application thereof |
| CN114774020A (en) * | 2022-05-07 | 2022-07-22 | 广东莱尔新材料科技股份有限公司 | Composite wafer protective film and preparation method thereof |
| CN114774020B (en) * | 2022-05-07 | 2024-01-30 | 广东莱尔新材料科技股份有限公司 | Composite wafer protective film and preparation method thereof |
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Application publication date: 20191231 |