CN111234743A - UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive and UV viscosity-reducing adhesive tape - Google Patents
UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive and UV viscosity-reducing adhesive tape Download PDFInfo
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- CN111234743A CN111234743A CN202010162218.2A CN202010162218A CN111234743A CN 111234743 A CN111234743 A CN 111234743A CN 202010162218 A CN202010162218 A CN 202010162218A CN 111234743 A CN111234743 A CN 111234743A
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- sensitive adhesive
- acrylic acid
- viscosity
- reducing pressure
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- 239000004820 Pressure-sensitive adhesive Substances 0.000 title claims abstract description 49
- 239000002390 adhesive tape Substances 0.000 title description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 41
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 41
- VVWRJUBEIPHGQF-UHFFFAOYSA-N propan-2-yl n-propan-2-yloxycarbonyliminocarbamate Chemical compound CC(C)OC(=O)N=NC(=O)OC(C)C VVWRJUBEIPHGQF-UHFFFAOYSA-N 0.000 claims abstract description 12
- DXPPIEDUBFUSEZ-UHFFFAOYSA-N 6-methylheptyl prop-2-enoate Chemical compound CC(C)CCCCCOC(=O)C=C DXPPIEDUBFUSEZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011521 glass Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 229910000077 silane Inorganic materials 0.000 claims abstract description 9
- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 claims abstract description 7
- SJEBAWHUJDUKQK-UHFFFAOYSA-N 2-ethylanthraquinone Chemical compound C1=CC=C2C(=O)C3=CC(CC)=CC=C3C(=O)C2=C1 SJEBAWHUJDUKQK-UHFFFAOYSA-N 0.000 claims abstract description 7
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 claims abstract description 7
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004005 microsphere Substances 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000005286 illumination Methods 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 10
- 150000001299 aldehydes Chemical class 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 claims description 6
- HYBBIBNJHNGZAN-UHFFFAOYSA-N Furaldehyde Natural products O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims description 6
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 6
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- QNVSXXGDAPORNA-UHFFFAOYSA-N Resveratrol Natural products OC1=CC=CC(C=CC=2C=C(O)C(O)=CC=2)=C1 QNVSXXGDAPORNA-UHFFFAOYSA-N 0.000 claims description 3
- LUKBXSAWLPMMSZ-OWOJBTEDSA-N Trans-resveratrol Chemical compound C1=CC(O)=CC=C1\C=C\C1=CC(O)=CC(O)=C1 LUKBXSAWLPMMSZ-OWOJBTEDSA-N 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000003112 inhibitor Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 229940016667 resveratrol Drugs 0.000 claims description 3
- 235000021283 resveratrol Nutrition 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000011324 bead Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 11
- 230000001070 adhesive effect Effects 0.000 abstract description 11
- 238000012545 processing Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 description 18
- 239000011248 coating agent Substances 0.000 description 17
- 238000012360 testing method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003679 aging effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- 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
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/062—Copolymers with monomers not covered by C09J133/06
- C09J133/064—Copolymers with monomers not covered by C09J133/06 containing anhydride, COOH or COOM groups, with M being metal or onium-cation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
-
- 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
- C09J11/04—Non-macromolecular additives inorganic
-
- 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
-
- 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
- C09J7/243—Ethylene or propylene polymers
-
- 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
- C09J7/245—Vinyl resins, e.g. polyvinyl chloride [PVC]
-
- 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
-
- 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
-
- 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
- C09J2433/00—Presence of (meth)acrylic polymer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
Abstract
The invention provides a UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive which comprises the following components in formula: 30-45 parts of isooctyl acrylate, 10-20 parts of AA refined acrylic acid, 1-10 parts of 2501A silane, 10-20 parts of 1-hydroxycyclohexyl phenyl ketone, 5-15 parts of dodecyl mercaptan, 5-10 parts of diisopropyl azodicarboxylate, 1-2 parts of organic tin and 8-15 parts of hollow glass microspheres; 1-5 parts by weight of 2-ethyl anthraquinone. According to the invention, the UV light is used for treating the preparation process instead of heating, the processing mode is simple, the production is more energy-saving and environment-friendly, the viscosity of the prepared pressure-sensitive adhesive is higher, but in the stripping process, the viscosity can be greatly reduced only by being irradiated by the UV light, and the adhesive is removed very smoothly.
Description
Technical Field
The invention belongs to the technical field of adhesives, and relates to a UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive and a UV viscosity-reducing adhesive tape.
Background
The pressure-sensitive adhesive is the product with the largest dosage and the widest application range in the adhesive, and products of the pressure-sensitive adhesive are almost spread in various fields of packaging, automobiles, transportation, communication, electric appliances, building materials, machinery, aviation, light industry, sanitation and the like.
Unlike permanent pressure sensitive adhesives, removable grade pressure sensitive adhesives form temporary bonds rather than permanent bonds. The peel strength of permanent pressure sensitive adhesives increases over time, generally does not need to be cleanly peeled from the substrate, and bonds to the surface of the substrate when removal is not required. On the other hand, removable pressure sensitive adhesives have a low peel strength over time, must peel cleanly from the substrate, and cannot bond to the substrate surface.
In the processing process of electronic products, a temporary bonding process is needed, parts need to be degummed as soon as possible for the next operation, but the adhesive with high viscosity in the current market is difficult to realize and easy to peel.
Therefore, the pressure-sensitive adhesive which ensures the viscosity under normal conditions and has higher stripping effect under special illumination conditions is developed by the department of China to meet the market demands. Chinese patent 201310076602.0 discloses a novel easily peelable pressure sensitive adhesive, which is prepared from organic solvents such as ethyl acetate and acetone, because these two solvents are volatile, and because volatilization affects the peeling effect, the residue after peeling is caused.
Disclosure of Invention
The invention aims to provide a pressure-sensitive adhesive with easy stripping after UV illumination and an adhesive tape prepared from the pressure-sensitive adhesive with easy stripping after UV illumination aiming at the characteristics of high viscosity, difficult stripping or good stripping performance but low viscosity of the pressure-sensitive adhesive in the prior art.
In order to achieve the purposes, the specific scheme is as follows:
the UV viscosity-reducing pressure-sensitive adhesive comprises the following components in formula: 30-45 parts of isooctyl acrylate, 10-20 parts of AA refined acrylic acid, 1-10 parts of 2501A silane, 10-20 parts of 1-hydroxycyclohexyl phenyl ketone, 5-15 parts of dodecyl mercaptan, 5-10 parts of diisopropyl azodicarboxylate, 1-2 parts of organic tin and 8-15 parts of hollow glass microspheres; 1-5 parts by weight of 2-ethyl anthraquinone.
Preferably, the UV viscosity-reducing pressure-sensitive adhesive formula also comprises 2-8 parts by weight of a compound I, wherein the structural formula of the compound I is as follows:
preferably, the preparation method of the AA refined acrylic acid comprises the following steps: the method comprises the steps of absorbing and rectifying propylene oxidation products by water to obtain crude acrylic acid containing 10-1000 ppm of acrolein, furfural and/or benzaldehyde and other impurities as a raw material, adding a polymerization inhibitor hydroquinone into the crude acrylic acid, selecting an alcohol substance containing 3-10 carbon atoms as an aldehyde removing reagent, reacting with aldehyde in the crude acrylic acid, then carrying out intermittent or continuous reduced pressure rectification, wherein the vacuum degree of the reduced pressure rectification is 0.1-50 kPa, obtaining polymer grade refined acrylic acid with the aldehyde content of zero and the acrylic acid purity of more than 99.80%, then adding 0.1-3% by weight of acrylic acid of resveratrol and 1, 6-hexanediol diacrylate into the polymer grade refined acrylic acid, and polymerizing for 20min under the illumination of 200-500nm of 2000LEX to obtain AA refined acrylic acid.
Preferably, the weight part ratio of the diisopropyl azodicarboxylate to the organotin is 3-8: 1.
Preferably, the hollow glass beads have a particle size of 5 to 12 μm and a thermal conductivity of 0.05 to 0.1W/m.k.
Preferably, the weight part ratio of the AA refined acrylic acid to the 2501A silane is 2-4: 1.
preferably, the weight part ratio of the isooctyl acrylate to the diisopropyl azodicarboxylate is 5-8: 1.
preferably, the weight part ratio of the AA fine acrylic acid to the compound I is 5-12: 1.
a preparation method of a UV viscosity-reducing pressure-sensitive adhesive comprises the following steps: adding isooctyl acrylate, 2501A silane, 1-hydroxycyclohexyl phenyl ketone, dodecanethiol, diisopropyl azodicarboxylate, hollow glass microspheres, a compound I and 2-ethyl anthraquinone into a container, uniformly stirring, and then adding AA fine acrylic acid and organotin under the illumination of the intensity 2200lex wavelength of 500 nm; and (3) stirring for 20-50min under illumination, wherein the stirring speed is 45 r/min, so as to prepare the UV viscosity-reducing pressure-sensitive adhesive.
The UV viscosity-reducing adhesive tape is prepared by coating the UV viscosity-reducing pressure-sensitive adhesive prepared by the invention on a base material, wherein the base material is one of polyethylene, polyvinyl chloride, polypropylene and polyimide films with the thickness of 5-150 mu m, the UV viscosity-reducing pressure-sensitive adhesive is coated on one side or two sides of the base material, and the coating thickness is 50-200 mu m.
Compared with the prior art, the invention has the following technical effects:
1. according to the invention, the UV light is used for treating the preparation process instead of heating, the processing mode is simple, the production is more energy-saving and environment-friendly, the viscosity of the prepared pressure-sensitive adhesive is higher, but in the stripping process, the viscosity can be greatly reduced only by being irradiated by the UV light, and the adhesive is removed very smoothly.
2. The AA refined acrylic acid which is specially processed has unexpected technical effect on viscosity, and compared with the existing UV viscosity-reducing pressure-sensitive adhesive, the high viscosity of the AA refined acrylic acid is obvious.
3. The invention adopts the ether compound with a special structure, can reduce the viscosity to be extremely low under the irradiation of UV light, has high adhesive force under general conditions, has extremely low viscosity after the irradiation of the UV light, has no residual glue during stripping, and has excellent performance.
4. Diisopropyl azodicarboxylate and ether compound are used in combination, foaming increases the volume of the pressure-sensitive adhesive, reduces the dosage of the pressure-sensitive adhesive, and simultaneously ensures the viscosity of the pressure-sensitive adhesive under common conditions.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive which comprises the following components: isooctyl acrylate, 2501A silane, 1-hydroxycyclohexyl phenyl ketone, dodecyl mercaptan, diisopropyl azodicarboxylate, hollow glass microspheres, compound I, 2-ethylanthraquinone, AA refined acrylic acid and organotin.
The preparation process of the AA refined acrylic acid comprises the following steps: absorbing and rectifying propylene oxidation products with water to obtain crude acrylic acid containing 10-1000 ppm of acrolein, furfural and/or benzaldehyde and other impurities as a raw material, adding a polymerization inhibitor hydroquinone into the crude acrylic acid, selecting an alcohol substance containing 3-10 carbon atoms as an aldehyde removing reagent, reacting with aldehyde in the crude acrylic acid, then carrying out intermittent or continuous reduced pressure rectification with the vacuum degree of 0.5-20 kPa to obtain polymer grade refined acrylic acid with the aldehyde content of zero and the acrylic acid purity of more than 99.80 percent, then adding resveratrol with the weight part of 0.1-0.5 percent of acrylic acid and 1, 6-hexanediol diacrylate with the weight part of 0.1-0.2 percent of acrylic acid into the polymer grade refined acrylic acid,
polymerizing for 20min under the illumination of 2000LEX200-500nm to obtain AA refined acrylic acid.
The UV tack-reducing pressure-sensitive adhesives of examples 1-12 were prepared by the formulations in the following tables. The specific formula is as follows:
adding isooctyl acrylate, 2501A silane, 1-hydroxycyclohexyl phenyl ketone, dodecanethiol, diisopropyl azodicarboxylate, hollow glass microspheres, a compound I and 2-ethyl anthraquinone into a container, uniformly stirring, and then adding AA fine acrylic acid and organotin under the illumination of the intensity 2200lex wavelength of 500 nm; and (3) stirring for 20-50min under illumination, wherein the stirring speed is 45 rpm, so as to prepare the UV viscosity-reducing pressure-sensitive adhesive of the corresponding embodiment.
The using method comprises the following steps: and (3) coating the prepared UV viscosity-reducing pressure-sensitive adhesive on one side or two sides of the base material in a coating machine, and then pasting release paper.
The coating mode of the UV viscosity-reducing pressure-sensitive adhesive of the embodiments 1, 3 and 5 is strip coating, and the coating area is 30-80% of the area of the common adhesive.
The coating method of the UV viscosity-reducing pressure-sensitive adhesive of the embodiments 2, 4 and 6 is grid coating, and the coating area is 30-80% of the area of the common adhesive.
Wherein, the coating mode of the UV viscosity-reducing pressure-sensitive adhesive of the embodiments 7, 8 and 9 is grid-shaped coating, and the coating area is 30-80% of the area of the common adhesive.
Wherein, the coating mode of the UV viscosity-reducing pressure-sensitive adhesive of the embodiment 10 and the embodiment 11 is the mesh point coating, and the coating area is 30 to 80 percent of the area of the common adhesive.
Wherein the UV tack-reducing pressure-sensitive adhesive of example 12 is applied in a full-coverage manner, and the coating area is 100% of the area of the conventional adhesive.
The formulations of comparative examples 1-12 are as follows:
the following peel tests were carried out on the above-described UV tack-reducing pressure-sensitive adhesives of 12 examples and 12 comparative examples,
and (3) measuring the viscosity: the privacy was measured by a rotary privacy meter model NDJ-79 in accordance with UB/T1723 + 1993, and the bowl size was adjusted to the viscosity level so that the viscosity level was within the standard error range.
Measurement of peel strength: the test was performed according to UB/T2792-. The test piece had a width of 25mm and a length of about 200mm, the test stainless steel plate had a length of 125mm, a width of 30mm and a thickness of 2mm, and the test piece was continuously peeled at a speed of 50mm/min and the peel force was read.
The average value of three tests is shown in the following table:
comparative example test data are as follows:
as can be seen from the above examples, examples 1 to 12 have great advantages in terms of viscosity change after light irradiation compared to comparative examples 1 to 12, particularly, in example 6 and example 9, viscosity change is very significant and peeling efficiency is very prominent, while in terms of viscosity change after high temperature treatment, examples 1 to 12 do not change significantly and comparative example viscosity change significantly, but comparative example viscosity change is not significant after one hour of viscosity year after treatment at a high temperature of 180 ℃, and is significant after 3 hours, so that UV thinning of the present invention can be achieved in terms of aging property for 30 seconds, and therefore the present invention has a prominent advantage in terms of peeling degree sudden change in terms of temporary bonding process.
In addition, in examples 1 to 11, incomplete coating was performed, which not only saves materials, but also does not degrade the performance of the adhesive tape.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The UV viscosity-reducing pressure-sensitive adhesive comprises the following components in formula: 30-45 parts of isooctyl acrylate, 10-20 parts of AA refined acrylic acid, 1-10 parts of 2501A silane, 10-20 parts of 1-hydroxycyclohexyl phenyl ketone, 5-15 parts of dodecyl mercaptan, 5-10 parts of diisopropyl azodicarboxylate, 1-2 parts of organic tin and 8-15 parts of hollow glass microspheres; 1-5 parts by weight of 2-ethyl anthraquinone.
2. The UV tack-reducing pressure-sensitive adhesive of claim 1, wherein: also comprises 2-8 parts by weight of a compound I, wherein the structural formula of the compound I is as follows:
3. the UV tack-reducing pressure-sensitive adhesive of claim 2, wherein: the preparation method of the AA fine acrylic acid comprises the following steps: the method comprises the steps of absorbing and rectifying propylene oxidation products by water to obtain crude acrylic acid containing 10-1000 ppm of acrolein, furfural and/or benzaldehyde and other impurities as a raw material, adding a polymerization inhibitor hydroquinone into the crude acrylic acid, selecting an alcohol substance containing 3-10 carbon atoms as an aldehyde removing reagent, reacting with aldehyde in the crude acrylic acid, then carrying out intermittent or continuous reduced pressure rectification, wherein the vacuum degree of the reduced pressure rectification is 0.1-50 kPa, obtaining polymer grade refined acrylic acid with the aldehyde content of zero and the acrylic acid purity of more than 99.80%, then adding 0.1-3% by weight of acrylic acid of resveratrol and 1, 6-hexanediol diacrylate into the polymer grade refined acrylic acid, and polymerizing for 20min under the illumination of 200-500nm of 2000LEX to obtain AA refined acrylic acid.
4. The UV detackifying pressure sensitive adhesive of claim 3, wherein: the weight part ratio of diisopropyl azodicarboxylate to organotin is 3-8: 1.
5. The UV tack-reducing pressure-sensitive adhesive of claim 2, wherein: the particle size of the hollow glass bead is 5-12 μm, and the heat conductivity coefficient is 0.05-0.1W/m.k.
6. The UV tack-reducing pressure-sensitive adhesive of claim 2, wherein: the weight part ratio of AA refined acrylic acid to 2501A silane is 2-4: 1.
7. the UV tack-reducing pressure-sensitive adhesive of claim 2, wherein: the weight portion ratio of the isooctyl acrylate to the diisopropyl azodicarboxylate is 5-8: 1.
8. the UV tack-reducing pressure-sensitive adhesive of claim 2, wherein: the weight part ratio of AA fine acrylic acid to the compound I is 5-12: 1.
9. a process for the preparation of a UV tack-reducing pressure sensitive adhesive according to any one of claims 2 to 8, comprising the steps of: adding isooctyl acrylate, 2501A silane, 1-hydroxycyclohexyl phenyl ketone, dodecanethiol, diisopropyl azodicarboxylate, hollow glass microspheres, a compound I and 2-ethyl anthraquinone into a container, uniformly stirring, and then adding AA fine acrylic acid and organotin under the illumination of the intensity 2200lex wavelength of 500 nm; and (3) stirring for 20-50min under illumination, wherein the stirring speed is 45 rpm, so as to obtain the UV viscosity-reducing pressure-sensitive adhesive as defined in any one of claims 2-8.
10. A UV detackifying tape, comprising: the UV viscosity-reducing pressure-sensitive adhesive is coated on a substrate by using the UV viscosity-reducing pressure-sensitive adhesive of any one of claims 2 to 8, wherein the substrate is one of polyethylene, polyvinyl chloride, polypropylene and polyimide films with the thickness of 5 to 150 microns.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010162218.2A CN111234743A (en) | 2020-03-10 | 2020-03-10 | UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive and UV viscosity-reducing adhesive tape |
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| CN202010162218.2A CN111234743A (en) | 2020-03-10 | 2020-03-10 | UV (ultraviolet) viscosity-reducing pressure-sensitive adhesive and UV viscosity-reducing adhesive tape |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703001A (en) * | 2012-06-12 | 2012-10-03 | 安徽省郎溪县阿拉法胶粘制品有限公司 | Iso-octyl acrylate adhesive and preparation method thereof |
| CN102702991A (en) * | 2012-06-12 | 2012-10-03 | 安徽省郎溪县阿拉法胶粘制品有限公司 | Acrylic double-faced adhesive tape and preparation method thereof |
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2020
- 2020-03-10 CN CN202010162218.2A patent/CN111234743A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703001A (en) * | 2012-06-12 | 2012-10-03 | 安徽省郎溪县阿拉法胶粘制品有限公司 | Iso-octyl acrylate adhesive and preparation method thereof |
| CN102702991A (en) * | 2012-06-12 | 2012-10-03 | 安徽省郎溪县阿拉法胶粘制品有限公司 | Acrylic double-faced adhesive tape and preparation method thereof |
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Application publication date: 20200605 |