CN111205778A - High-temperature self-stripping adhesive and high-temperature self-stripping adhesive tape - Google Patents
High-temperature self-stripping adhesive and high-temperature self-stripping adhesive tape Download PDFInfo
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- CN111205778A CN111205778A CN202010162205.5A CN202010162205A CN111205778A CN 111205778 A CN111205778 A CN 111205778A CN 202010162205 A CN202010162205 A CN 202010162205A CN 111205778 A CN111205778 A CN 111205778A
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0028—Use of organic additives containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
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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
- C09J11/04—Non-macromolecular additives inorganic
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or 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 of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or 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 of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/06—Characterised by the use of homopolymers or 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 of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2333/08—Homopolymers or copolymers of acrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides a high-temperature self-stripping adhesive which comprises the following components in parts by weight: 30-50 parts of isooctyl acrylate, 10-20 parts of allyl alcohol complex, 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. The adhesive is prepared at normal temperature, heating or illumination and the like are not adopted, formula raw materials are easy to obtain, 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 heating to more than 80 ℃, and the adhesive is removed very smoothly.
Description
Technical Field
The invention belongs to the technical field of adhesives, and relates to a high-temperature self-peeling adhesive and a high-temperature self-peeling adhesive tape.
Background
The adhesive is a product with large dosage and wide application range in the production of electronic industry, and products of the adhesive are almost spread in various fields of packaging, automobiles, transportation, communication, electric appliances, building materials, machinery, aviation, light industry, sanitation and the like.
In the processing process of electronic products, particularly the grinding process of ceramics and wafers needs to be fixed by adhesives, and after the grinding process is finished, the grinding needs to be stripped as soon as possible for next-step processing, but the stripping degree and the viscosity are in inverse proportion to a certain degree at present, a high-viscosity high-fixed value at normal temperature is prepared, and the adhesives automatically stripped at high temperature bring great convenience to the processing of the products.
Therefore, an adhesive with a peeling degree greatly changed under a certain condition is needed in the temporary curing process.
Disclosure of Invention
The invention aims to provide an adhesive easy to peel at high temperature and a high-temperature self-peeling adhesive tape prepared from the high-temperature self-peeling adhesive, aiming at the characteristics that the pressure-sensitive adhesive in the prior art is high in viscosity and not easy to peel or good in peeling property but low in viscosity.
In order to achieve the purposes, the specific scheme is as follows:
the high-temperature self-stripping adhesive comprises the following components in formula: 30-50 parts of isooctyl acrylate, 10-20 parts of allyl alcohol complex, 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 high-temperature self-stripping adhesive formula also comprises 5-15 parts by weight of a compound I, wherein the structural formula of the compound I is as follows:
preferably, the preparation method of the allyl alcohol complex comprises the following steps: the preparation method of the propenol complex comprises the following steps: firstly, the polyoxypropylene alcohol is vacuumized and dehydrated for 30min at the temperature of 120 ℃. And then, under the protection of nitrogen, dropwise adding polyoxypropylene alcohol into excessive diisocyanate while stirring (the molar ratio of (-NCO to-OH groups is 2:1), adding a small amount of catalyst dibutyltin dilaurate, controlling the reaction temperature at 90-100 ℃, stopping heating after 1h of reaction, cooling and discharging to obtain the allyl alcohol complex.
Preferably, the weight part ratio of the diisopropyl azodicarboxylate to the organotin is 3-5: 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 ratio of the allyl alcohol complex to the 2501A silane in parts by weight is 3: 1.
preferably, the weight part ratio of the isooctyl acrylate to the diisopropyl azodicarboxylate is 5-8: 1.
preferably, the ratio of the allyl alcohol complex to the compound I in parts by weight is 3-8: 1.
a preparation method of a high-temperature self-stripping adhesive comprises the following steps: adding isooctyl acrylate, 2501A silane, 1-hydroxycyclohexyl phenyl ketone, dodecyl mercaptan, diisopropyl azodicarboxylate, hollow glass microspheres, a compound I and 2-ethyl anthraquinone into a container, uniformly stirring, standing for 3-10min, and adding an allyl alcohol complex and organic tin; stirring for 20-50min at a stirring speed of 45 rpm to obtain the high-temperature self-stripping adhesive.
The high-temperature self-stripping adhesive tape is prepared by coating a substrate with the high-temperature self-stripping adhesive prepared by the invention, wherein the substrate is one of polyethylene, polyvinyl chloride, polypropylene and polyimide films with the thickness of 5-150 mu m, and the high-temperature self-stripping adhesive is coated on one side or two sides of the substrate and the coating thickness is 50-200 mu m.
Compared with the prior art, the invention has the following technical effects:
1. the adhesive is prepared at normal temperature, heating or illumination and the like are not adopted, formula raw materials are easy to obtain, 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 heating to more than 80 ℃, and the adhesive is removed very smoothly.
2. The acrylic alcohol complex which is specially treated has an unexpected technical effect in the aspect of viscosity, and compared with the existing self-stripping adhesive, the acrylic alcohol complex has higher viscosity at normal temperature and obvious stripping degree change at the temperature of more than 80 ℃.
3. The invention adopts the ether compound with a special structure, the viscosity is obviously reduced at the temperature of 80 ℃, the adhesive has high adhesion and high pressure at normal temperature, no adhesive residue is generated during stripping, and the performance is excellent.
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 high-temperature self-stripping 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, an allyl alcohol complex and organotin.
The preparation process of the allyl alcohol complex comprises the following steps: the preparation method of the propenol complex comprises the following steps: the preparation method of the propenol complex comprises the following steps: firstly, the polyoxypropylene alcohol is vacuumized and dehydrated for 30min at the temperature of 120 ℃. And then, under the protection of nitrogen, dropwise adding polyoxypropylene alcohol into excessive diisocyanate while stirring (the molar ratio of (-NCO to-OH groups is 2:1), adding a small amount of catalyst dibutyltin dilaurate, controlling the reaction temperature at 90-100 ℃, stopping heating after 1h of reaction, cooling and discharging to obtain the allyl alcohol complex.
The high temperature self-stripping 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, dodecyl mercaptan, diisopropyl azodicarboxylate, hollow glass microspheres, a compound I and 2-ethyl anthraquinone into a container, uniformly stirring, standing for 3-10min, and adding an allyl alcohol complex and organic tin; stirring for 20-50min at a stirring speed of 45 rpm to obtain the high-temperature self-stripping adhesive of the corresponding embodiment.
The using method comprises the following steps: and (3) putting the prepared high-temperature self-stripping adhesive into a coating machine to coat on one side or two sides of the base material, and then attaching release paper.
The coating mode of the high-temperature self-stripping adhesive in the embodiments 1, 3 and 5 is strip coating, and the coating area is 30-80% of the area of the common glue.
The coating method of the high-temperature self-stripping adhesive of the embodiments 2, 4 and 6 is grid coating, and the coating area is 30-80% of the area of the common glue.
The coating method of the high-temperature self-peeling adhesive of the embodiments 7, 8 and 9 is grid coating, and the coating area is 30-80% of the area of the common glue.
The coating method of the high-temperature self-peeling adhesives of the embodiments 10 and 11 is a mesh-like coating, and the coating area is 30-80% of the area of the common glue.
The coating method of the high-temperature self-peeling adhesive in example 12 is full-coverage coating, and the coating area is 100% of the area of the common glue.
The formulations of comparative examples 1-12 are as follows:
the high-temperature self-peeling adhesives of the 12 examples and the 12 comparative examples described above were subjected to peeling tests,
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:
it can be seen from the above examples that examples 1-12 have a great advantage in viscosity change after treatment at a temperature of 80 ℃ or higher compared to comparative examples 1-12, especially in examples 6 and 9, viscosity change is very significant and peeling efficiency is very prominent, and in the viscosity change after treatment, since the viscosity is significantly reduced after treatment at a temperature of 120 ℃ for 8 minutes and a long treatment time at 80 ℃ for 1 hour or at 120 ℃ for 5 minutes, the temperature can be adjusted according to actual conditions during production, and the treatment temperature is higher in the range of 80-160 ℃ and the treatment time is shorter.
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 high-temperature self-stripping adhesive comprises the following components in formula: 30-50 parts of isooctyl acrylate, 10-20 parts of allyl alcohol complex, 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 high temperature self-debonding adhesive of claim 1, wherein: the formula also comprises 5-15 parts by weight of a compound I, wherein the structural formula of the compound I is as follows:
3. the high temperature self-debonding adhesive of claim 2, wherein: the preparation method of the propenol complex comprises the following steps: the preparation method of the propenol complex comprises the following steps: firstly, the polyoxypropylene alcohol is vacuumized and dehydrated for 30min at the temperature of 120 ℃. And then, under the protection of nitrogen, dropwise adding polyoxypropylene alcohol into excessive diisocyanate while stirring (the molar ratio of (-NCO to-OH groups is 2:1), adding a small amount of catalyst dibutyltin dilaurate, controlling the reaction temperature at 90-100 ℃, stopping heating after 1h of reaction, cooling and discharging to obtain the allyl alcohol complex.
4. The high temperature self-stripping adhesive as claimed in claim 3, wherein: the weight part ratio of diisopropyl azodicarboxylate to organotin is 3-5: 1.
5. The high temperature self-debonding 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 high temperature self-debonding adhesive of claim 2, wherein: the weight part ratio of the allyl alcohol complex to the 2501A silane is 3: 1.
7. the high temperature self-debonding adhesive of claim 2, wherein: the weight portion ratio of the isooctyl acrylate to the diisopropyl azodicarboxylate is 5-8: 1.
8. the high temperature self-debonding adhesive of claim 2, wherein: the weight part ratio of the allyl alcohol complex to the compound I is 3-8: 1.
9. a method for preparing the high-temperature self-peeling adhesive as claimed in any one of claims 2-8, which comprises the following steps: adding isooctyl acrylate, 2501A silane, 1-hydroxycyclohexyl phenyl ketone, dodecyl mercaptan, diisopropyl azodicarboxylate, hollow glass microspheres, a compound I and 2-ethyl anthraquinone into a container, uniformly stirring, standing for 3-10min, and adding an allyl alcohol complex and organic tin; stirring for 20-50min at a stirring speed of 45 rpm to obtain the high-temperature self-stripping adhesive as claimed in any one of claims 2-8.
10. The utility model provides a high temperature is from peeling off gluing area which characterized in that: the high-temperature self-stripping adhesive is coated on a base material, wherein the base material is one of polyethylene, polyvinyl chloride, polypropylene and polyimide films with the thickness of 5-150 microns.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010162205.5A CN111205778A (en) | 2020-03-10 | 2020-03-10 | High-temperature self-stripping adhesive and high-temperature self-stripping adhesive tape |
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| CN202010162205.5A CN111205778A (en) | 2020-03-10 | 2020-03-10 | High-temperature self-stripping adhesive and high-temperature self-stripping adhesive tape |
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Application publication date: 20200529 |