CN112480772A - High-temperature-resistant protective coating material and preparation method thereof - Google Patents
High-temperature-resistant protective coating material and preparation method thereof Download PDFInfo
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- CN112480772A CN112480772A CN202011404647.2A CN202011404647A CN112480772A CN 112480772 A CN112480772 A CN 112480772A CN 202011404647 A CN202011404647 A CN 202011404647A CN 112480772 A CN112480772 A CN 112480772A
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions 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; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—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
- C09D133/062—Copolymers with monomers not covered by C09D133/06
- C09D133/064—Copolymers with monomers not covered by C09D133/06 containing anhydride, COOH or COOM groups, with M being metal or onium-cation
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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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular 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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- C08J2433/00—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
- C08J2433/04—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
- C08J2433/06—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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Adhesive Tapes (AREA)
Abstract
The invention discloses a high-temperature-resistant protective coating material and a preparation method thereof. The high-temperature resistant protective coating material comprises the following raw materials in percentage by weight: 80-90% of acrylic resin, 5-10% of curing agent, 1-10% of small molecular auxiliary agent and 3-20% of solvent. The high-temperature-resistant protective coating material disclosed by the invention can keep good thermal stability at the temperature of 180-200 ℃ for 3h, has no residual glue precipitation after stripping, and can be used for preparing a high-temperature-resistant protective adhesive tape.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a high-temperature-resistant protective coating material and a preparation method thereof.
Background
A protective coating is a coating used to protect the surface of an article from contamination or damage during shipping, storage, and processing of the protected article.
At present, the existing protective coating can not bear high-temperature treatment at 150 ℃ for a long time, harmful gas can be released in the baking process, great harm is caused to the environment and human bodies, the coating is not easy to peel off after high-temperature aging, and residues exist to cause pollution to materials to be protected.
CN103756455A discloses a high-temperature resistant strippable protective coating and a preparation method thereof, wherein the strippable resin comprises the following components in parts by weight: 40-70 parts of polyvinyl chloride resin, 20-50 parts of plasticizer, 5-10 parts of epoxy compound, 2-5 parts of phosphite ester, 2-5 parts of polyol, 3-6 parts of stabilizer and 1-2 parts of thixotropic agent. The polyvinyl chloride resin is different polyvinyl chloride resins with polymerization degrees of 1000-1700 or a mixture thereof. The strippable protective coating provided by the invention has excellent heat aging resistance, shows excellent thermal stability in a high-temperature process of 150-160 ℃, does not release HCl gas in the process, keeps good strippability after baking, and has no residue after stripping, so that the protected ITO circuit is not corroded and polluted. However, the high temperature resistance is in the range of 150 ℃ to 160 ℃ and needs to be further improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a high-temperature-resistant protective coating material and a preparation method thereof.
The invention provides a high-temperature resistant protective coating material, which aims to achieve the aim and adopts the following technical scheme:
the high-temperature-resistant protective coating material comprises the following raw materials in percentage by weight:
it should be noted that the high temperature resistance referred to in the present invention refers to the resistance to a high temperature of 180 ℃ or higher, especially 180 ℃ and 200 ℃, under which the material still has excellent peeling force.
According to the high-temperature-resistant protective coating material, the micromolecular auxiliary agent is added into the raw materials of acrylic resin and the curing agent, the acrylic resin has a long branched-chain reticular macromolecule and has good wettability, and is grafted with the group in the curing agent, the molecular cohesion of the acrylic resin is increased on the basis of good wettability, residual glue is not easy to generate, the micromolecular auxiliary agent is moved to two sides of the resin layer in the drying process to be cured and formed to form a compact high-temperature-resistant protective layer, an adherend can be effectively protected by the unique three-layer structure of the high-temperature-resistant protective coating material, the high-temperature-resistant protective coating material can be used in the high-temperature processing process compared with a common protective coating, the high-temperature-resistant protective coating material can withstand the high-temperature.
In the present invention, the weight percentage of the acrylic resin is 80 to 90%, for example, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, or 90%.
In the present invention, the weight percentage of the curing agent is 5-10%, for example, 5%, 6%, 7%, 8%, 9%, or 10%.
In the present invention, the weight percentage of the small molecule assistant is 1-10%, for example, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, or 10%.
In the present invention, the weight percentage of the solvent is 3 to 20%, for example, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, or the like.
The micromolecule auxiliary agent is easy to migrate to the surface of an adherend under a high-temperature baking environment to form a high-temperature resistant protective layer, and the using effect is better. The small molecule assistant has a relative molecular weight of 10 to 3000, for example, a relative molecular weight of 10, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700, 2800, 2900, or 3000, and if the molecular weight is too large, molecules cannot migrate to the surface of the coating layer during drying, and the peel force thereof becomes large after high-temperature baking and residual glue is generated.
Preferably, the small molecular auxiliary agent is an epoxy auxiliary agent and/or a silicone oil auxiliary agent, for example, the small molecular auxiliary agent is TEGO270, LD-91082, and the like.
The acrylic resin is prepared from the following raw materials in percentage by weight:
40-60% of acrylic monomer, for example, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, or 60% by weight of acrylic monomer, and the like.
30-60% solvent, for example 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, or 60% solvent by weight.
0.1-1% of initiator, for example, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, or 1% by weight of initiator.
The acrylic resin of the invention is crosslinked and polymerized to form a network macromolecule with longer branched chains after reaction, has good wettability, and then is grafted and reacted with the epoxy resin, so that the molecular cohesion of the acrylic resin is increased on the basis of having good wettability, and the acrylic resin is not easy to glue residue.
The acrylic monomer is any one or a mixture of at least two of N-butyl acrylate, N-butyl methacrylate, methyl acrylate, methacrylic acid, acrylic acid, isooctyl acrylate, hydroxyethyl acrylate, glycidyl acrylate and N-vinyl pyrrolidone.
Preferably, the solvent is any one or a mixture of at least two of butanone, toluene and ethyl acetate.
Preferably, the initiator is any one of dibenzoyl peroxide, azobisisobutyronitrile and azobisisoheptonitrile or a mixture of at least two of them.
The curing agent is an epoxy curing agent or an amine curing agent.
Preferably, the solvent is any one or a mixture of at least two of butanone, toluene and ethyl acetate.
The second purpose of the invention is to provide a preparation method of the high-temperature resistant protective coating material, which comprises the following steps: and mixing and stirring the acrylic resin, the curing agent, the small molecular auxiliary agent and the solvent uniformly according to the proportion to obtain the high-temperature-resistant protective coating material.
The preparation method of the acrylic resin comprises the following steps: weighing acrylic monomers, a solvent and an initiator according to the proportion, mixing and stirring for 3-5h under the protection of nitrogen in a water bath environment at the temperature of 60-80 ℃ to obtain the acrylic resin. Wherein the water bath environment is 60-80 deg.C, such as 60 deg.C, 65 deg.C, 70 deg.C, 75 deg.C or 80 deg.C; the stirring time is 3-5h, for example 3h, 3.5h, 4h, 4.5h or 5 h.
The present invention also provides a high-temperature-resistant protective tape obtained from the high-temperature-resistant protective coating material.
The fourth purpose of the invention is to provide a preparation method of the high-temperature resistant protective adhesive tape, which comprises the following steps: preparing the high-temperature-resistant protective coating material into a feeding liquid; and coating the uniformly stirred upper machine feed liquid on a PET (polyethylene terephthalate) base film, and baking and curing to obtain the high-temperature-resistant protective adhesive tape.
The mass concentration percentage of the upper machine feed liquid is 45-50%, for example, the mass concentration percentage is 45%, 46%, 47%, 48%, 49% or 50%.
Preferably, the surface of the PET base film is corona-treated.
Preferably, the baking temperature is 80-100 ℃, for example, the baking temperature is 80 ℃, 85 ℃, 90 ℃, 95 ℃ or 100 ℃ and the like.
Preferably, the curing temperature is 40-60 ℃, for example, the curing temperature is 40 ℃, 45 ℃, 50 ℃, 55 ℃ or 60 ℃ and the like; the curing time is 40-50h, for example, the curing time is 40h, 41h, 42h, 43h, 44h, 45h, 46h, 47h, 48h, 49h or 50h, etc.
Compared with the prior art, the invention has the beneficial effects that:
the high-temperature-resistant protective coating material provided by the invention has the advantages that the micromolecule auxiliary agent is migrated to the two surfaces of the resin layer in the drying process and is cured and molded to form a compact high-temperature-resistant protective layer, an adherend can be effectively protected by the unique three-layer structure of the high-temperature-resistant protective coating material, the high-temperature-resistant protective coating material can be used in the high-temperature processing process compared with the common protective coating, the high-temperature-resistant protective coating material can keep good thermal stability at the temperature of 180-200 ℃ for 3h, no residual glue is separated out after stripping, the high-temperature-resistant protective coating material can be used for preparing a high-.
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 high-temperature-resistant protective coating material of the embodiment is prepared from the following raw materials in percentage by weight:
wherein, the curing agent is 593, the micromolecule auxiliary agent is TEGO270, and the solvent is ethyl acetate.
The preparation method of the high temperature resistant protective coating material of the embodiment comprises the following steps: and mixing and stirring the acrylic resin, the curing agent, the small molecular auxiliary agent and the solvent uniformly according to the proportion to obtain the high-temperature-resistant protective coating material.
The acrylic resin comprises the following raw materials in percentage by weight:
acrylic monomer 49.9%.
49.9 percent of solvent,
0.2 percent of initiator,
wherein the acrylic monomer is: 75 percent of n-butyl acrylate
20 percent of isooctyl acrylate
Methacrylic acid 5%
The solvent is ethyl acetate, and the initiator is azobisisobutyronitrile.
The preparation method of the acrylic resin of this example is as follows: and weighing the acrylic monomer, the solvent and the initiator according to the above proportion, and mixing and stirring for 4 hours in a water bath environment at 70 ℃ under the protection of nitrogen to obtain the acrylic resin.
Example 2
The high-temperature-resistant protective coating material of the embodiment is prepared from the following raw materials in percentage by weight:
wherein, the curing agent is 593, the micromolecule auxiliary agent is TEGO270, and the solvent is ethyl acetate.
The acrylic resin comprises the following raw materials in percentage by weight:
49.9 percent of acrylic monomer,
49.9 percent of solvent,
0.2 percent of initiator,
wherein the acrylic monomer is: 75 percent of n-butyl acrylate
20 percent of isooctyl acrylate
Methacrylic acid 5%
The solvent is ethyl acetate, and the initiator is: azobisisobutyronitrile.
Example 3
The high-temperature-resistant protective coating material of the embodiment is prepared from the following raw materials in percentage by weight:
wherein, the curing agent is 593, the micromolecule auxiliary agent is TEGO270, and the solvent is ethyl acetate.
The acrylic resin comprises the following raw materials in percentage by weight:
49.9 percent of acrylic monomer,
49.9 percent of solvent,
0.2 percent of initiator,
wherein the acrylic monomer is: 75 percent of n-butyl acrylate
20 percent of isooctyl acrylate
5 percent of methacrylic acid,
the solvent is ethyl acetate, and the initiator is azobisisobutyronitrile.
Example 4
The high-temperature-resistant protective coating material of the embodiment is prepared from the following raw materials in percentage by weight:
wherein, the curing agent is 593, the micromolecule auxiliary agent is TEGO270, and the solvent is ethyl acetate.
The acrylic resin comprises the following raw materials in percentage by weight:
49.9 percent of acrylic monomer,
49.9 percent of solvent,
0.2 percent of initiator,
wherein the acrylic monomer is: 75 percent of n-butyl acrylate
20 percent of isooctyl acrylate
Methacrylic acid 5%
The solvent is ethyl acetate, and the initiator is azobisisobutyronitrile.
Example 5
This example is different from example 1 in that the small molecule assistant was replaced with LD-91082, and the rest was the same as example 1.
Example 6
This example is different from example 1 in that 1618 was substituted for the curing agent, and the rest was the same as example 1.
Example 7
This example differs from example 1 in that the small molecule adjuvant was replaced with tetrasodium EDTA, and the rest was the same as example 1.
Example 8
This example is different from example 1 in that the curing agent was replaced with HDI, and the others were the same as those of example 1.
Comparative example 1
This comparative example differs from example 1 in that no small molecule adjuvant is added and the reduced amount is added on average to the other components to ensure the total amount is unchanged, all other being the same as example 1.
Comparative example 2
This comparative example is different from example 1 in that the acrylic resin was replaced with a urethane resin, and the others were the same as those of example 1.
Preparing the high-temperature-resistant protective coating materials prepared in the examples 1-8 and the protective coating materials prepared in the comparative examples 1-2 into an upper machine feed liquid; coating the uniformly stirred upper machine feed liquid on a PET base film, baking at 90 ℃, curing at 50 ℃ for 48 hours to obtain a high-temperature-resistant protective adhesive tape, and carrying out performance test on the prepared adhesive tape, wherein the test results are shown in Table 1.
The test method comprises the following steps:
the optical functional film, the release film, the 180-degree peeling force and the residual adhesion rate test method in GB/T25256-.
Referring to a test method of GB/T32368-.
The appearance was observed in a dark room by illuminating the glass plate with a hard light flashlight and observing whether the coating had debonded.
TABLE 1
As can be seen from table 1, the small molecule assistant in example 7 is replaced by tetrasodium EDTA, and the acrylic resin and the metal ions are decomplexed in a high temperature process, so that the coating is not heat-resistant and has white fog, precipitation, delamination and the like.
The curing agent of example 8 was replaced with HDI, which made the coating thermolabile.
Comparative example 1, which did not contain a small molecule assistant, increased its peel force.
Comparative example 2 acrylic resin was replaced with polyurethane which started to decompose at 150 c and therefore the resin did not resist high temperatures.
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 high-temperature-resistant protective coating material is characterized by comprising the following components in percentage by weight:
2. the high temperature resistant protective coating material of claim 1, wherein the small molecule assistant has a relative molecular weight of 10-3000;
preferably, the small molecular auxiliary agent is an epoxy auxiliary agent and/or a silicone oil auxiliary agent.
3. The high-temperature-resistant protective coating material as claimed in claim 1, wherein the acrylic resin is prepared from the following raw materials in percentage by weight:
acrylic acid monomer 40-60%
30 to 60 percent of solvent
0.1 to 1 percent of initiator.
4. The high temperature resistant protective coating material of claim 3, wherein the acrylic monomer is any one or a mixture of at least two of N-butyl acrylate, N-butyl methacrylate, methyl acrylate, methacrylic acid, acrylic acid, isooctyl acrylate, hydroxyethyl acrylate, glycidyl acrylate, and N-vinyl pyrrolidone;
preferably, the solvent is any one or a mixture of at least two of butanone, toluene and ethyl acetate;
preferably, the initiator is any one of dibenzoyl peroxide, azobisisobutyronitrile and azobisisoheptonitrile or a mixture of at least two of them.
5. The high temperature resistant protective coating material of claim 1, wherein the curing agent is an epoxy curing agent or an amine curing agent;
preferably, the solvent is any one or a mixture of at least two of butanone, toluene and ethyl acetate.
6. A method for preparing a high temperature resistant protective coating material according to any one of claims 1 to 5, characterized in that the method comprises the steps of: and mixing and stirring the acrylic resin, the curing agent, the small molecular auxiliary agent and the solvent uniformly according to the proportion to obtain the high-temperature-resistant protective coating material.
7. The method according to claim 6, wherein the acrylic resin is prepared by: weighing acrylic monomers, a solvent and an initiator according to the proportion, mixing and stirring for 3-5h under the protection of nitrogen in a water bath environment at the temperature of 60-80 ℃ to obtain the acrylic resin.
8. A high temperature resistant protective tape obtained by using the high temperature resistant protective coating material according to any one of claims 1 to 5.
9. A method of preparing a high temperature resistant protective tape according to claim 8, comprising the steps of: preparing the high-temperature-resistant protective coating material into a feeding liquid; and coating the uniformly stirred upper machine feed liquid on a PET (polyethylene terephthalate) base film, and baking and curing to obtain the high-temperature-resistant protective adhesive tape.
10. The preparation method according to claim 9, wherein the mass concentration percentage of the upper machine feed liquid is 45-50%;
preferably, the surface of the PET base film is corona-treated;
preferably, the baking temperature is 80-100 ℃;
preferably, the curing temperature is 40-60 ℃, and the curing time is 40-50 h.
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