CN113372824A - Water-impact-resistant high-viscosity UV (ultraviolet) viscosity-reducing adhesive and preparation method and application thereof - Google Patents
Water-impact-resistant high-viscosity UV (ultraviolet) viscosity-reducing adhesive and preparation method and application thereof Download PDFInfo
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- CN113372824A CN113372824A CN202110706373.0A CN202110706373A CN113372824A CN 113372824 A CN113372824 A CN 113372824A CN 202110706373 A CN202110706373 A CN 202110706373A CN 113372824 A CN113372824 A CN 113372824A
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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
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
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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
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives 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
- 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
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/241—Polyolefin, e.g.rubber
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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
- 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
- C09J2423/00—Presence of polyolefin
- C09J2423/006—Presence of polyolefin in the substrate
Abstract
The invention discloses a water impact resistant high-viscosity UV (ultraviolet) viscosity-reducing adhesive and a preparation method and application thereof. The water impact resistant high-viscosity UV viscosity-reducing adhesive comprises the following components in parts by weight: 50-80 parts of acrylic acid glue, 10-30 parts of UV monomer and/or UV oligomer, 1-5 parts of silane coupling agent, 0.1-2 parts of curing agent and 0.5-3 parts of photoinitiator. The UV viscosity-reducing adhesive tape prepared by the invention has the characteristics of high initial adhesion, high viscosity and excellent water resistance, can replace a silica gel tape, solves the problems of raising of the fixed edge of a substrate, difficult separation of materials and chips during cutting and residual adhesive, reduces the viscosity of the adhesive tape after the cutting and the UV irradiation, can realize easy chip peeling without damage, and improves the economic benefits of efficiency, yield and the like.
Description
Technical Field
The invention relates to the technical field of adhesives, relates to a UV (ultraviolet) viscosity-reducing adhesive and a preparation method and application thereof, and particularly relates to a water-impact-resistant high-viscosity UV viscosity-reducing adhesive and a preparation method and application thereof.
Background
The method for cutting the LED chip is characterized in that the size of the silica gel is cut into the size of the LED substrate by the method mostly adopted at present, the substrate is fixed, and the circular knife cools the water for mechanical cutting, and the specific clamp is used for separating the chip after the cutting. However, the chip separation method is relatively original, and has the problems of difficult chip separation, low production efficiency, reduced yield due to chip damage in the mechanical chip separation process, silicon transfer of silica gel and the like.
CN110527464A discloses a high-viscosity yellowing-resistant explosion-proof film glue, which comprises the following components in parts by weight: 100 parts of acrylic acid glue, 5-10 parts of tackifying resin, 0.15-0.6 part of curing agent and 50-90 parts of solvent; the acrylic acid glue is prepared by reacting the following components in parts by weight: 26-30 parts of isooctyl acrylate, 3-5 parts of acrylic acid, 0.5-1 part of hydroxyethyl acrylate, 5-10 parts of methyl acrylate, 53-65 parts of ethyl acetate and 0.5-1 part of azobisisobutyronitrile; the solvent is selected from one or more of ethyl acetate, toluene and butanone, and the tackifying resin is hydrogenated resin. The high-viscosity yellowing-resistant explosion-proof film glue is colorless and transparent in appearance, and can still ensure enough peeling force according to different coating thicknesses; under the condition of high-temperature aging, the appearance is not yellowed, and the stripping force is not attenuated basically. However, the water resistance and initial viscosity of the high-viscosity yellowing-resistant explosion-proof membrane glue are required to be further improved.
CN112608688A discloses a UV adhesive, which comprises the following components in parts by weight: 20-80 parts of UV oligomer, 10-60 parts of UV functional monomer, 1-5 parts of photoinitiator, 0.1-5 parts of auxiliary agent and 1-10 parts of functional filler. The UV oligomer comprises one or a combination of polyurethane (methyl) acrylate, polyester (methyl) acrylate, polyether (methyl) acrylate, epoxy (methyl) acrylate, polyolefin modified (methyl) acrylate, silane modified (methyl) acrylate and pure acrylate. The UV functional monomer is an active monomer which can be initiated to polymerize by a photoinitiator, and comprises one or a combination of (methyl) acrylic acid monomer, olefin monomer, vinyl ether monomer and allyl monomer. The UV adhesive has the characteristics of high light transmittance, high curing speed, tough adhesive layer, vibration resistance, good stability, good weather resistance, good insulativity, high temperature resistance, water resistance, high hardness and the like, and is particularly suitable for packaging LED lamp beads. However, the viscosity, initial adhesive performance and water resistance of the UV adhesive of the invention need to be further improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the water impact resistant high-viscosity UV viscosity-reducing adhesive and the preparation method and application thereof.
One of the purposes of the invention is to provide a water impact resistant high viscosity UV adhesive reducing agent, and in order to achieve the purpose, the invention adopts the following technical scheme:
the water impact resistant high-viscosity UV viscosity-reducing adhesive comprises the following components in parts by weight:
the high viscosity referred to in the present invention means an initial peel force of > 2000g/25mm and a tack of > 20 #.
The invention provides a water impact resistant high-viscosity UV (ultraviolet) adhesive reducing agent, wherein the addition of a UV monomer and/or a UV oligomer improves the polymerization degree and the molecular weight, and the addition of a silane coupling agent enables the group of the silane coupling agent to be combined with resin, so that a chemical bond with higher strength is formed on an adhesive interface, and the adhesive strength and the water resistance are greatly improved. According to the invention, by adjusting the composition and the dosage of each component, the prepared UV viscosity-reducing adhesive has the characteristics of high initial adhesion, high viscosity and excellent water resistance, the prepared UV viscosity-reducing adhesive tape can replace a silica gel tape, the problems of warping of the fixed edge of a substrate, material flying during cutting, difficult separation of chips and residual adhesive are solved, the viscosity of the adhesive tape is reduced after the cutting is finished and UV irradiation is carried out, the chips can be easily peeled without damage, and the economic benefits such as efficiency, yield and the like are improved.
Specifically, the water impact resistant high-viscosity UV viscosity-reducing adhesive comprises the following components in parts by weight:
the acrylic glue is 50-80 parts by weight, such as 50 parts, 51 parts, 52 parts, 53 parts, 54 parts, 55 parts, 56 parts, 57 parts, 58 parts, 59 parts, 60 parts, 61 parts, 62 parts, 63 parts, 64 parts, 65 parts, 66 parts, 67 parts, 68 parts, 69 parts, 70 parts, 71 parts, 72 parts, 73 parts, 74 parts, 75 parts, 76 parts, 77 parts, 78 parts, 79 parts or 80 parts.
The weight parts of the UV monomer and/or UV oligomer are 10 to 30 parts, for example, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, or the like.
The silane coupling agent is 1 to 5 parts by weight, for example, 1, 2,3, 4, or 5 parts by weight. The curing agent is used in an amount of 0.1 to 2 parts by weight, for example, 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.1 part, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2 parts, etc.
The photoinitiator is 0.5 to 3 parts by weight, for example, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.1 part, 1.2 part, 1.3 part, 1.4 part, 1.5 part, 1.6 part, 1.7 part, 1.8 part, 1.9 part, 2 parts, 2.1 part, 2.2 parts, 2.3 parts, 2.4 parts, 2.5 parts, 2.6 parts, 2.7 parts, 2.8 parts, 2.9 parts, 3 parts, or the like.
In the invention, the acrylic acid glue comprises the following components in parts by weight:
the butyl acrylate is 70 to 90 parts by weight, for example, 70 parts, 71 parts, 72 parts, 73 parts, 74 parts, 75 parts, 76 parts, 77 parts, 78 parts, 79 parts, 80 parts, or the like.
The vinyl acetate is present in an amount of 2 to 10 parts by weight, for example 2,3, 4, 5, 6, 7, 8, 9 or 10 parts by weight.
The acrylic acid is present in an amount of 2 to 6 parts by weight, for example 2,3, 4, 5 or 6 parts by weight.
The amount of hydroxyethyl methacrylate is 0 to 4 parts by weight, for example, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts or 4 parts.
The reaction initiator is used in an amount of 0.1 to 0.5 parts by weight, for example, 0.1 part, 0.2 part, 0.3 part, 0.4 part, or 0.5 part.
In the UV monomer and/or the UV oligomer, the UV monomer is any one of hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxybutyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, 2-hydroxyethyl methacrylate, acrylamide, 1, 6-hexanediol dimethacrylate, 1, 6-hexanediol diacrylate, ethylene glycol diacrylate, triethylene glycol diacrylate, tripropylene glycol diacrylate, p-neopentyl glycol diacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate and trimethylolpropane pentaerythritol triacrylate Or a mixture of at least two thereof.
Preferably, the UV oligomer is any one or a mixture of at least two of aromatic urethane acrylate oligomer, epoxy acrylate oligomer, polyester acrylate oligomer, aliphatic urethane acrylate oligomer, epoxy acrylate oligomer, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, or trimethylolpropane triacrylate and a vinyl acetate acrylate copolymer.
The silane coupling agent is any one or a mixture of at least two of gamma- (methacryloyloxy) propyl trimethoxy silane, gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, gamma-aminopropyl triethoxy silane, gamma- (2, 3-epoxypropoxy) propyl triethoxy silane and vinyl triethoxy silane.
The curing agent is any one or a mixture of at least two of triphenylmethane triisocyanate, hexamethylene diisocyanate trimer, toluene diisocyanate trimer, isophorone diisocyanate trimer and thiophosphoric acid tri (4-phenyl isocyanate).
The photoinitiator is any one or a mixture of at least two of 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-methyl phenyl propane-1-ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholinyl-1-acetone, benzoin dimethyl ether, benzophenone, 2-isopropyl thioxanthone and 2,4,6- (trimethylbenzoyl) -diphenyl phosphine oxide.
The invention also aims to provide a preparation method of the water impact resistant high-viscosity UV viscose reducing agent, which comprises the following steps: and (2) blending acrylic acid glue, UV monomer and/or UV oligomer, silane coupling agent, curing agent and photoinitiator according to a ratio, and stirring under a yellow light condition to obtain the UV viscose reducer.
The invention also aims to provide a water impact resistant high-viscosity UV (ultraviolet) viscosity-reducing adhesive tape which comprises a substrate layer, a water impact resistant high-viscosity UV viscosity-reducing adhesive layer and a release film layer which are sequentially arranged from top to bottom, wherein the water impact resistant high-viscosity UV viscosity-reducing adhesive layer is prepared from the water impact resistant high-viscosity UV viscosity-reducing adhesive.
The substrate layer is one of polyethylene terephthalate, polyvinyl chloride, polyolefin, polyethylene or polypropylene.
Preferably, the thickness of the substrate layer is 140-150 μm, such as 140 μm, 141 μm, 142 μm, 143 μm, 144 μm, 145 μm, 146 μm, 147 μm, 148 μm, 149 μm, 150 μm, etc.
Preferably, the thickness of the water impact resistant high viscosity UV visbreaking glue layer is 5-60 μm, such as 5 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm or 60 μm, etc.
Preferably, the release film layer is a PET single-silicon release film.
Preferably, the thickness of the release film layer is 12-75 μm, such as 12 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm, 60 μm, 65 μm, 70 μm, or 75 μm, etc.; the release force is 10-30g/25mm, for example, 10g/25mm, 15g/25mm, 20g/25mm, 25g/25mm, or 30g/25 mm.
The fourth purpose of the invention is to provide a preparation method of the water impact resistant high-viscosity UV visbreaking adhesive tape, which comprises the following steps:
1) blending acrylic acid glue, UV monomer and/or UV oligomer, silane coupling agent, curing agent and photoinitiator according to the proportion to obtain the water impact resistant high viscosity UV viscose reducer;
2) coating the water impact resistant high-viscosity UV visbreaking glue obtained in the step 1) on the surface of the release film, and baking to obtain a composite layer of a water impact resistant high-viscosity UV visbreaking glue layer and the release film layer;
3) compounding the composite layer obtained in the step 2) on the surface of the base material subjected to corona treatment, and curing to obtain the water impact resistant high-viscosity UV (ultraviolet) viscosity-reducing adhesive tape;
preferably, in the step 2), the baking temperature is 80-120 ℃, and the baking time is 1-5 min;
preferably, in the step 3), the curing temperature is 40-50 ℃, and the curing time is 1-3 days.
The fifth purpose of the invention is to provide the application of the water impact resistant high-viscosity UV viscosity-reducing adhesive tape of the third purpose, and the water impact resistant high-viscosity UV viscosity-reducing adhesive tape is used for a circular knife cooling water cutting process.
Preferably, the water impact resistant high viscosity UV adhesive reducing tape is used in a cutting process of LED chips.
Compared with the prior art, the invention has the beneficial effects that:
the UV visbreaking adhesive prepared by the invention has the characteristics of high initial adhesion, high viscosity and excellent water resistance, specifically, the initial adhesion is No. 20-26, the initial stripping force with SUS is 2411-2894g/25mm, the stripping force after being attached to SUS and soaked in pure water for 1h is 2410-2736g/25mm, the adhesion after being irradiated by the energy of SUS300MJ is 14.2-23.2g, and the retention force is not slipped after 48 h; the prepared UV viscosity-reducing adhesive tape can replace a silica gel tape, solves the problems of warping of the fixed edge of a substrate, material flying during cutting, difficult separation of chips and residual adhesive, reduces the viscosity of the adhesive tape after the cutting and UV irradiation, can realize easy chip peeling without damage, improves the economic benefits such as efficiency, yield and the like, and can be widely used in a circular knife cooling water cutting process, especially in a cutting process of LED chips.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments.
Unless otherwise specified, various starting materials of the present invention are commercially available or prepared according to conventional methods in the art.
Example 1
The water impact resistant high-viscosity UV visbreaking adhesive tape comprises a base material layer, a water impact resistant high-viscosity UV visbreaking adhesive layer and a release film layer from top to bottom in sequence.
Wherein, the base material layer is a PO film with the thickness of 145 mu m.
The water impact resistant high-viscosity UV viscosity-reducing adhesive comprises the following components in parts by weight:
wherein the UV monomer and/or the UV oligomer is a mixture of aliphatic urethane acrylate oligomer and hydroxyethyl methacrylate, and the mass ratio is 5: 5; the silane coupling agent is gamma- (methacryloyloxy) propyl trimethoxy silane; the curing agent is toluene diisocyanate trimer; the photoinitiator is 1-hydroxycyclohexyl phenyl ketone.
The preparation method of the water impact resistant high-viscosity UV viscose glue comprises the following steps: acrylic acid glue, UV monomer and/or UV oligomer, silane coupling agent, curing agent and photoinitiator are mixed according to the proportion, stirred at a high speed of 500RPM for 40min under the condition of yellow light, and ethyl acetate is supplemented, so that the water impact resistant high-viscosity UV viscose reducer with the solid content of 25% is prepared, and the viscosity is 350 CPS.
The acrylic acid glue comprises the following components in parts by weight:
the preparation method of the acrylic acid glue comprises the following steps: butyl acrylate, vinyl acetate, acrylic acid, hydroxyethyl methacrylate and azobisisobutyronitrile are polymerized according to the mixture ratio, and toluene and ethyl acetate solvent with the mass ratio of 1:1 are supplemented to obtain the acrylic acid glue with the solid content of 40 percent.
Wherein the release film layer is a PET single-silicon release film with the thickness of 38 μm and the release force of 20g/25 mm;
the preparation method of the water impact resistant high-viscosity UV visbreaking adhesive tape comprises the following steps:
1) blending acrylic acid glue, UV monomer and/or UV oligomer, silane coupling agent, curing agent and photoinitiator according to the proportion to obtain the water impact resistant high viscosity UV viscose reducer;
2) coating the water impact resistant high-viscosity UV visbreaking glue obtained in the step 1) on the surface of the release film, and baking for 3min at 100 ℃ to obtain a composite layer of a water impact resistant high-viscosity UV visbreaking glue layer (with the thickness of 20 microns) and the release film layer;
3) compounding the composite layer obtained in the step 2) on the surface of the base material PO film subjected to corona treatment, and curing for 2 days at 45 ℃ to obtain the water impact resistant high-viscosity UV visbreaking adhesive tape.
Example 2
The difference between the embodiment and the embodiment 1 is that the water impact resistant high viscosity UV visbreaking adhesive layer has a different composition, and specifically comprises the following components in parts by weight:
the rest is the same as in example 1.
Example 3
The difference between the embodiment and the embodiment 1 is that the water impact resistant high viscosity UV visbreaking adhesive layer has a different composition, and specifically comprises the following components in parts by weight:
the rest is the same as in example 1.
Example 4
The difference between the embodiment and the embodiment 1 is that the water impact resistant high viscosity UV visbreaking adhesive layer has a different composition, and specifically comprises the following components in parts by weight:
the rest is the same as in example 1.
Example 5
This example is different from example 1 in that the UV monomer and/or UV oligomer is a vinyl acetate acrylate copolymer, and the others are the same as example 1.
Example 6
This example is different from example 1 in that the silane coupling agent is γ - (2, 3-glycidoxy) propyltrimethoxysilane, and the rest is the same as example 1.
Example 7
This example is different from example 1 in that the curing agent is hexamethylene diisocyanate trimer, and the others are the same as those in example 1.
Example 8
This example differs from example 1 in that the photoinitiator was 2,4,6- (trimethylbenzoyl) -diphenylphosphine oxide, which was otherwise the same as that of example 1.
Example 9
This example differs from example 1 in that the UV monomer and/or UV oligomer is replaced with propoxylated (2) neopentyl glycol diacrylate, all otherwise identical to that of example 1.
Example 10
This example is different from example 1 in that the silane coupling agent was replaced with phenyltriethoxysilane, and the rest was the same as example 1.
Example 11
The difference between this example and example 1 is that the preparation method of the water impact resistant high viscosity UV viscose reducing agent has no yellow light condition, and the rest is the same as that of example 1.
Comparative example 1
This comparative example differs from example 1 in that the amount of UV monomer and/or UV oligomer used was 5 parts, and the amount of reduction was added on average to each of the other components to ensure that the total amount was constant, all other being the same as in example 1.
Comparative example 2
This comparative example differs from example 1 in that the amount of UV monomer and/or UV oligomer used was 50 parts, and the amount of addition was subtracted from the other components on average to ensure that the total amount remained the same as in example 1.
Comparative example 3
This comparative example differs from example 1 in that the amount of the silane coupling agent used was too low, 0.1 parts, and the reduced amount was added on average to each of the other components to ensure that the total amount was not changed, all other components being the same as in example 1.
Comparative example 4
This comparative example differs from example 1 in that the amount of the silane coupling agent used was too high, 8 parts, and the amount of the increase was subtracted from each of the other components on average to ensure that the total amount was constant, all other things being equal to example 1.
The UV adhesive tapes obtained in examples 1 to 11 and comparative examples 1 to 4 were subjected to the performance test, and the test results are shown in Table 1.
Wherein the initial adhesion is tested according to the regulation of the national standard GB/T4852; the retention was tested according to the regulations of the national standard GB/T4851; the 180-degree peel strength is tested according to the specification of the national standard GB/T2792; the 180 DEG peel strength after ultraviolet irradiation is tested by using an LEDUV lamp tube (the wavelength is 365nm) according to the regulations of the national standard GB/T2792.
TABLE 1
As can be seen from table 1, the UV anti-adhesive tapes prepared in embodiments 1 to 8 of the present invention have the characteristics of high initial adhesion, high viscosity, and excellent water resistance, and the UV anti-adhesive tapes prepared therefrom can replace silica gel tapes, thereby solving the problems of warpage of the fixed edge of the substrate, material flying during cutting, difficulty in chip separation, and residual adhesive, and after UV irradiation after cutting, the adhesive tapes have reduced viscosity, which can realize easy chip peeling and no damage, and improve economic benefits such as efficiency and yield.
Example 9 replacement of the UV monomer or oligomer with propoxylated (2) neopentyl glycol diacrylate reduced the initial peel force and provided poor water resistance.
Example 10 replacement of the silane coupling agent with phenyltriethoxysilane reduced the initial peel force, reduced initial tack, and poor water resistance.
Example 11 the absence of yellow light conditions would not cause much problems for short runs and could have steady quality variations for high volume runs.
Comparative example 1 too little UV monomer and/or UV oligomer was used, resulting in insufficient detackification.
Comparative example 2 too much UV monomer and/or UV oligomer was used, resulting in reduced cohesion, poor adhesion and reduced holding power.
Comparative example 3 too small amount of silane coupling agent decreases the peeling force.
Comparative example 4 the silane coupling agent was used in an excessive amount, resulting in a decrease in initial tack.
The present invention is illustrated by the above-mentioned examples, but the present invention is not limited to the above-mentioned detailed process equipment and process flow, i.e. it is not meant to imply that the present invention must rely on the above-mentioned detailed process equipment and process flow to be practiced. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. The water impact resistant high-viscosity UV viscose reducing agent is characterized by comprising the following components in parts by weight:
2. the water impact resistant high viscosity UV reducing adhesive according to claim 1, characterized in that the acrylic adhesive comprises the following components in parts by weight:
3. the water impact resistant high viscosity UV viscose reducing agent according to claim 1 or 2, wherein in the UV monomer and/or UV oligomer, the UV monomer is hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxybutyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, 2-hydroxyethyl methacrylate, acrylamide, 1, 6-hexanediol dimethacrylate, 1, 6-hexanediol diacrylate, ethylene glycol diacrylate, triethylene glycol diacrylate, tripropylene glycol diacrylate, ethylene glycol diacrylate, propylene glycol diacrylate, ethylene glycol diacrylate, propylene glycol ester, and/or propylene glycol ester, and propylene, Any one or a mixture of at least two of neopentyl glycol diacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate and trimethylolpropane pentaerythritol triacrylate;
preferably, the UV oligomer is any one or a mixture of at least two of aromatic urethane acrylate oligomer, epoxy acrylate oligomer, polyester acrylate oligomer, aliphatic urethane acrylate oligomer, epoxy acrylate oligomer, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, or trimethylolpropane triacrylate and a vinyl acetate acrylate copolymer.
4. The water impact resistant high viscosity UV viscose reducing agent according to any one of claims 1 to 3, wherein the silane coupling agent is any one or a mixture of at least two of γ - (methacryloyloxy) propyltrimethoxysilane, γ - (2, 3-epoxypropoxy) propyltrimethoxysilane, γ -aminopropyltriethoxysilane, γ - (2, 3-epoxypropoxy) propyltriethoxysilane and vinyltriethoxysilane.
5. The water impact resistant high viscosity UV viscose reducer according to any one of claims 1 to 4, wherein the curing agent is any one or a mixture of at least two of triphenylmethane triisocyanate, hexamethylene diisocyanate trimer, toluene diisocyanate trimer, isophorone diisocyanate trimer and tris (4-phenyl isocyanate) thiophosphate;
preferably, the photoinitiator is any one or a mixture of at least two of 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-methyl phenyl propane-1-ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholinyl-1-propanone, benzoin dimethyl ether, benzophenone, 2-isopropyl thioxanthone and 2,4,6- (trimethylbenzoyl) -diphenyl phosphine oxide.
6. A method for preparing the water impact resistant high viscosity UV viscose reducing agent according to any one of claims 1 to 5, wherein the method comprises the following steps: and (2) blending acrylic acid glue, UV monomer and/or UV oligomer, silane coupling agent, curing agent and photoinitiator according to a ratio, and stirring under a yellow light condition to obtain the UV viscose reducer.
7. A water impact resistant high-viscosity UV (ultraviolet) viscosity-reducing adhesive tape is characterized by comprising a substrate layer, a water impact resistant high-viscosity UV viscosity-reducing adhesive layer and a release film layer which are sequentially arranged from top to bottom, wherein the water impact resistant high-viscosity UV viscosity-reducing adhesive layer is prepared from the water impact resistant high-viscosity UV viscosity-reducing adhesive of any one of claims 1 to 5.
8. The water impact resistant high viscosity UV detackifying tape of claim 7, wherein the substrate layer is one of polyethylene terephthalate, polyvinyl chloride, polyolefin, polyethylene or polypropylene;
preferably, the thickness of the substrate layer is 140-150 μm;
preferably, the thickness of the water impact resistant high viscosity UV visbreaking adhesive layer is 5-60 μm;
preferably, the release film layer is a PET single-silicon release film;
preferably, the thickness of the release film layer is 12-75 μm, and the release force is 10-30g/25 mm.
9. A method for preparing the water impact resistant high viscosity UV viscosity breaking adhesive tape according to claim 7 or 8, wherein the method comprises the following steps:
1) blending acrylic acid glue, UV monomer and/or UV oligomer, silane coupling agent, curing agent and photoinitiator according to the proportion to obtain the water impact resistant high viscosity UV viscose reducer;
2) coating the water impact resistant high-viscosity UV visbreaking glue obtained in the step 1) on the surface of the release film, and baking to obtain a composite layer of a water impact resistant high-viscosity UV visbreaking glue layer and the release film layer;
3) compounding the composite layer obtained in the step 2) on the surface of the base material subjected to corona treatment, and curing to obtain the water impact resistant high-viscosity UV (ultraviolet) viscosity-reducing adhesive tape;
preferably, in the step 2), the baking temperature is 80-120 ℃, and the baking time is 1-5 min;
preferably, in the step 3), the curing temperature is 40-50 ℃, and the curing time is 1-3 days.
10. Use of the water impact resistant high viscosity UV detackifying tape of claim 7 or 8 in a circular knife cooling water cutting process;
preferably, the water impact resistant high-viscosity UV adhesive reducing tape is used in a circular knife cooling water cutting process of an LED chip.
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| CN113897168A (en) * | 2021-10-26 | 2022-01-07 | 湖北大学 | UV (ultraviolet) viscosity-reducing glue solution, single-side UV viscosity-reducing protective film and preparation method |
| CN113969111A (en) * | 2021-12-01 | 2022-01-25 | 湖北航天化学技术研究所 | Secondary curing UV pressure-sensitive adhesive and preparation method of secondary curing UV pressure-sensitive adhesive and explosion-proof membrane |
| CN114806488A (en) * | 2022-04-14 | 2022-07-29 | 江苏国胶新材料有限公司 | Adhesive capable of being photoinduced to lose adhesion and preparation method thereof |
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| CN111334216A (en) * | 2020-03-13 | 2020-06-26 | 安徽荣泽科技有限公司 | Dual visbreaking film |
| CN112680131A (en) * | 2020-11-25 | 2021-04-20 | 苏州赛伍应用技术股份有限公司 | PVC (polyvinyl chloride) substrate UV (ultraviolet) viscosity-reducing adhesive film for semiconductor chip film inversion and preparation method thereof |
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| JP2018024785A (en) * | 2016-08-10 | 2018-02-15 | 株式会社有沢製作所 | Uv curable type resin composition |
| CN111334216A (en) * | 2020-03-13 | 2020-06-26 | 安徽荣泽科技有限公司 | Dual visbreaking film |
| CN112680131A (en) * | 2020-11-25 | 2021-04-20 | 苏州赛伍应用技术股份有限公司 | PVC (polyvinyl chloride) substrate UV (ultraviolet) viscosity-reducing adhesive film for semiconductor chip film inversion and preparation method thereof |
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| CN113897168A (en) * | 2021-10-26 | 2022-01-07 | 湖北大学 | UV (ultraviolet) viscosity-reducing glue solution, single-side UV viscosity-reducing protective film and preparation method |
| CN113969111A (en) * | 2021-12-01 | 2022-01-25 | 湖北航天化学技术研究所 | Secondary curing UV pressure-sensitive adhesive and preparation method of secondary curing UV pressure-sensitive adhesive and explosion-proof membrane |
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