CN109233710B - Insulating material with high glass transition temperature and high-temperature cohesiveness and preparation method thereof - Google Patents
Insulating material with high glass transition temperature and high-temperature cohesiveness and preparation method thereof Download PDFInfo
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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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K2003/023—Silicon
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses an insulating material with high glass transition temperature and high-temperature cohesiveness and a preparation method thereof, and relates to the technical field of insulating materials. The insulating material of the present invention is obtained by reacting a resin composition and a curing agent composition, the resin composition comprising: four-functional group epoxy resin, organic silicon epoxy resin, phenolic resin, polyurethane modified epoxy resin and a dispersing agent; the curing agent composition comprises: pyromellitic anhydride, a toughening agent and a composite accelerator. The invention also carries out modification treatment on the metal silicon powder, enhances the affinity of the silicon powder to resin, and improves the physical property and the glass transition temperature of the insulating material.
Description
The technical field is as follows:
the invention relates to the technical field of insulating materials, in particular to an insulating material with high glass transition temperature and high-temperature cohesiveness and a preparation method thereof.
Background art:
the glass transition temperature of the traditional epoxy anhydride system insulating part is generally within 130 ℃, and although the traditional epoxy anhydride system insulating part has higher glass transition temperature, the traditional epoxy anhydride system insulating part obviously cannot meet the requirement of the increasingly developed electrical industry. According to market demands, the formula and the process of a traditional epoxy anhydride system insulating part are improved, an insulating material with high glass transition temperature and excellent high-temperature bonding performance is provided, the glass transition temperature can reach over 160 ℃, and the development demand of the existing electric power can be completely met.
The invention content is as follows:
the invention aims to provide an insulating material with high glass transition temperature and excellent high-temperature bonding performance.
The technical problem to be solved by the invention is realized by adopting the following technical scheme: an insulating material with high glass transition temperature and high-temp adhesion is prepared from the modified resin composition and solidifying agent composition through reaction.
The modified resin composition comprises the following raw materials in parts by weight:
the curing agent composition comprises the following raw materials in parts by weight:
pyromellitic anhydride 89.4 parts
10 portions of flexibilizer
0.6 part of composite accelerator.
The tetrafunctional epoxy resin is selected from Henschel-Mannich tetrafunctional epoxy resins.
The silicone epoxy resin is selected from Hensman machine silicone epoxy resin.
The molecular weight of the phenolic resin is 5000-2 ten thousand.
The polyurethane modified epoxy resin is selected from polyurethane modified epoxy resin SL 3451.
The dispersant is carboxymethyl cellulose/tartaric acid, and the preparation method comprises the following steps: adding carboxymethyl cellulose into a proper amount of deionized water, and stirring at normal temperature until the carboxymethyl cellulose is completely dissolved; adjusting the pH value of the solution to 5-6 by using 10% acetic acid solution, adding ferrocene and tartaric acid, heating to 70-80 ℃, stirring for 2-3h, and enabling the reaction system to generate oily substances; cooling to 30-40 deg.C, adding sodium chloride and sodium glycocholate, and stirring for 0.5-1 h; cooling to room temperature, separating oil, evaporating, and crystallizing to obtain carboxymethyl cellulose/tartaric acid.
The mass ratio of the carboxymethyl cellulose to the ferrocene to the tartaric acid to the sodium chloride to the sodium glycocholate is 30-40: 1: 20-30: 2: 2.
the mechanism of the reaction is esterification reaction, the carboxymethyl cellulose and the tartaric acid are synthesized into the carboxymethyl cellulose/tartaric acid by taking ferrocene as a catalyst under an acidic condition, and the dispersant is obtained by salting out and modifying sodium chloride and sodium glycocholate. The dispersant is a lipid substance and has good intermiscibility with resin, and the emulsification and solubilization effects of the synthetic dispersant are far higher than those of carboxymethyl cellulose due to the change of the structure.
The toughening agent is preferably a Dow chemical toughening agent F-10.
The composite accelerator is selected from one or more of benzyl dimethylamine and imidazole.
A method for preparing an insulating material with high glass transition temperature and high-temperature cohesiveness comprises the following steps:
(1) preparation of modified resin composition: adding the four-functional group epoxy resin into a high-speed dispersion storage tank, and preheating to 80 ℃; then adding organic silicon epoxy resin, phenolic resin and polyurethane modified epoxy resin, stirring and mixing for 1h at the rotating speed of 600r/min, cooling to 64-65 ℃, adding a dispersing agent, stirring and mixing for 1h at the rotating speed of 500r/min, and then discharging;
(2) preparation of the curing agent composition: adding pyromellitic dianhydride into a reaction kettle, stirring and heating to 105 ℃, adding a toughening agent, stirring at the rotation speed of 40-60r/min for 3 hours, cooling to 70-75 ℃, adding a composite accelerator, and stirring at the temperature of 20-30 minutes;
(3) heating and curing for forming: mixing a modified resin composition, a curing agent and metal silicon powder according to a mass ratio of 100: 60: 300, uniformly mixing and stirring, producing the mutual inductor by a vacuum pouring mode, and curing by adopting a curing process of curing at 80 ℃ for 2h, curing at 110 ℃ for 2h and curing at 130 ℃ for 6-8 h.
The metal silicon powder is subjected to modification treatment, and the modification method comprises the following steps: uniformly dispersing metal silicon powder in absolute ethyl alcohol, soaking for 10-15min, adjusting the pH value of the solution to 5-6 by formic acid, then adding PEG400, heating to a reflux state, keeping the temperature and stirring for 15-30min, then adding a silane coupling agent, keeping the temperature and stirring for 0.5-2h under the reflux state, naturally cooling to room temperature, transferring the obtained mixture to a-5 ℃ environment, sealing and standing for 2-6h, filtering, washing the obtained filter residue by absolute ethyl alcohol, and then sending the filter residue into a vacuum dryer for drying.
The mass ratio of the metal silicon powder, the PEG400 and the silane coupling agent is 10-15:1-5: 1-5.
The granularity of the metal silicon powder is 40-100 meshes.
The invention has the beneficial effects that:
(1) the four resins and the dispersant are mixed according to a proportion to form the modified resin composition, and the composition has higher glass transition temperature and high-temperature cohesiveness after being cured and formed by the curing agent;
(2) the dispersing agent which takes carboxymethyl cellulose and tartaric acid as raw materials can uniformly mix resins with different components to form a resin system with high dispersibility, and simultaneously, the high-temperature cohesiveness of the resin system is improved; in the curing process, the dispersant can assist the curing agent composition to reduce the curing time and improve the curing strength, and the physical and mechanical properties of the final insulating material are obviously improved;
(3) after the metal silicon powder is modified by PEG400 and a silane coupling agent, the hardness of the metal silicon powder is reduced, and the defect that the granularity is reduced due to the fact that the metal silicon powder is hard and fragile in the stirring process is avoided; the addition of the metal silicon powder improves the physical properties of resin such as stretching and bending; the affinity of the modified metal silicon powder to lipid substances is obviously improved, and meanwhile, the glass transition temperature of the material can be improved by the metal silicon powder, so that the requirement of F, H-grade insulating materials is met;
(4) the process flow is simple, environment-friendly and suitable for industrial production.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
Preparation of the dispersant: adding 30g of carboxymethyl cellulose into a proper amount of deionized water, and stirring at normal temperature until the carboxymethyl cellulose is completely dissolved; adjusting the pH value of the solution to 5-6 by using a 10% acetic acid solution, adding 1g of ferrocene and 20g of tartaric acid, heating to 70 ℃, stirring for 2 hours, and enabling the reaction system to generate oily substances; cooling to 35 deg.C, adding 2g sodium chloride and 2g sodium glycocholate, and stirring for 0.5 h; cooling to room temperature, separating oil, evaporating, and crystallizing to obtain carboxymethyl cellulose/tartaric acid.
Preparing an insulating material:
(1) preparation of modified resin composition: adding 70g of Henschel four-functional group epoxy resin into a high-speed dispersion storage tank, and preheating to 80 ℃; then adding 10g of Hensman machine silicon epoxy resin, 10g of phenolic resin and 10g of polyurethane modified epoxy resin SL3451, stirring and mixing for 1h at the rotating speed of 400r/min, cooling to 64-65 ℃, adding 8g of dispersing agent, stirring and mixing for 1h at the rotating speed of 500r/min, and then discharging;
(2) preparation of the curing agent composition: adding 89.4g of pyromellitic dianhydride into a reaction kettle, stirring and heating to 105 ℃, adding 10g of flexibilizer F-10, stirring at the rotation speed of 40r/min for 3 hours, cooling to 70 ℃, adding 0.6g of benzyl dimethylamine, and stirring at the temperature for 20 minutes;
(3) heating and curing for forming: 100g of modified resin composition, 60g of curing agent composition and 300g of metal silicon powder are mixed and stirred uniformly, the mutual inductor is produced in a vacuum pouring mode, and the mutual inductor is cured by a curing process of curing at 80 ℃ for 2h, curing at 110 ℃ for 2h and curing at 130 ℃ for 6 h.
Modification of metal silicon powder: uniformly dispersing 10g of metal silicon powder in absolute ethyl alcohol, soaking for 10min, adjusting the pH value of the solution to 5-6 by using formic acid, then adding 2g of PEG400, heating to a reflux state, keeping the temperature and stirring for 20min, then adding 2g of silane coupling agent, keeping the temperature and stirring for 1h under the reflux state, naturally cooling to room temperature, transferring the obtained mixture to a-5 ℃ environment, sealing and standing for 3h, filtering, washing the obtained filter residue by using absolute ethyl alcohol, and then sending the filter residue into a vacuum dryer for drying.
Example 2
Preparation of the dispersant: adding 35g of carboxymethyl cellulose into a proper amount of deionized water, and stirring at normal temperature until the carboxymethyl cellulose is completely dissolved; adjusting the pH value of the solution to 5-6 by using a 10% acetic acid solution, adding 1g of ferrocene and 22g of tartaric acid, heating to 70 ℃, stirring for 2 hours, and enabling the reaction system to generate oily substances; cooling to 35 deg.C, adding 2g sodium chloride and 2g sodium glycocholate, and stirring for 0.5 h; cooling to room temperature, separating oil, evaporating, and crystallizing to obtain carboxymethyl cellulose/tartaric acid.
Preparing an insulating material:
(1) preparation of modified resin composition: adding 70g of Henschel four-functional group epoxy resin into a high-speed dispersion storage tank, and preheating to 80 ℃; then adding 10g of Hensman machine silicon epoxy resin, 10g of phenolic resin and 10g of polyurethane modified epoxy resin SL3451, stirring and mixing for 1h at the rotating speed of 400r/min, cooling to 64-65 ℃, adding 8g of dispersing agent, stirring and mixing for 1h at the rotating speed of 500r/min, and then discharging;
(2) preparation of the curing agent composition: adding 89.4g of pyromellitic dianhydride into a reaction kettle, stirring and heating to 105 ℃, adding 10g of flexibilizer F-10, stirring at the rotation speed of 40r/min for 3 hours, cooling to 70 ℃, adding 0.6g of benzyl dimethylamine, and stirring at the temperature for 20 minutes;
(3) heating and curing for forming: 100g of modified resin composition, 60g of curing agent composition and 300g of metal silicon powder are mixed and stirred uniformly, the mutual inductor is produced in a vacuum pouring mode, and the mutual inductor is cured by a curing process of curing at 80 ℃ for 2h, curing at 110 ℃ for 2h and curing at 130 ℃ for 6 h.
Modification of metal silicon powder: uniformly dispersing 10g of metal silicon powder in absolute ethyl alcohol, soaking for 10min, adjusting the pH value of the solution to 5-6 by using formic acid, then adding 2g of PEG400, heating to a reflux state, keeping the temperature and stirring for 20min, then adding 3g of silane coupling agent, keeping the temperature and stirring for 1h under the reflux state, naturally cooling to room temperature, transferring the obtained mixture to a-5 ℃ environment, sealing and standing for 3h, filtering, washing the obtained filter residue by using absolute ethyl alcohol, and then sending the filter residue into a vacuum dryer for drying.
Comparative example 1
The dispersant is selected from acrylate dispersants with molecular weight of 1000-.
Preparing an insulating material:
(1) preparation of modified resin composition: adding 70g of Henschel four-functional group epoxy resin into a high-speed dispersion storage tank, and preheating to 80 ℃; then adding 10g of Hensman machine silicon epoxy resin, 10g of phenolic resin and 10g of polyurethane modified epoxy resin SL3451, stirring and mixing for 1h at the rotating speed of 400r/min, cooling to 64-65 ℃, adding 8g of acrylate dispersant, stirring and mixing for 1h at the rotating speed of 500r/min, and then discharging;
(2) preparation of the curing agent composition: adding 89.4g of pyromellitic dianhydride into a reaction kettle, stirring and heating to 105 ℃, adding 10g of flexibilizer F-10, stirring at the rotation speed of 40r/min for 3 hours, cooling to 70 ℃, adding 0.6g of benzyl dimethylamine, and stirring at the temperature for 20 minutes;
(3) heating and curing for forming: 100g of modified resin composition, 60g of curing agent composition and 300g of metal silicon powder are mixed and stirred uniformly, the mutual inductor is produced in a vacuum pouring mode, and the mutual inductor is cured by a curing process of curing at 80 ℃ for 2h, curing at 110 ℃ for 2h and curing at 130 ℃ for 6 h.
Modification of metal silicon powder: uniformly dispersing 10g of metal silicon powder in absolute ethyl alcohol, soaking for 10min, adjusting the pH value of the solution to 5-6 by using formic acid, then adding 2g of PEG400, heating to a reflux state, keeping the temperature and stirring for 20min, then adding 3g of silane coupling agent, keeping the temperature and stirring for 1h under the reflux state, naturally cooling to room temperature, transferring the obtained mixture to a-5 ℃ environment, sealing and standing for 3h, filtering, washing the obtained filter residue by using absolute ethyl alcohol, and then sending the filter residue into a vacuum dryer for drying.
Comparative example 2
Preparation of the dispersant: adding 35g of carboxymethyl cellulose into a proper amount of deionized water, and stirring at normal temperature until the carboxymethyl cellulose is completely dissolved; adjusting the pH value of the solution to 5-6 by using a 10% acetic acid solution, adding 1g of ferrocene and 22g of tartaric acid, heating to 70 ℃, stirring for 2 hours, and enabling the reaction system to generate oily substances; cooling to 35 deg.C, adding 2g sodium chloride and 2g sodium glycocholate, and stirring for 0.5 h; cooling to room temperature, separating oil, evaporating, and crystallizing to obtain carboxymethyl cellulose/tartaric acid.
Preparing an insulating material:
(1) preparation of modified resin composition: adding 70g of Henschel four-functional group epoxy resin into a high-speed dispersion storage tank, and preheating to 80 ℃; then adding 10g of Hensman machine silicon epoxy resin, 10g of phenolic resin and 10g of polyurethane modified epoxy resin SL3451, stirring and mixing for 1h at the rotating speed of 400r/min, cooling to 64-65 ℃, adding 8g of dispersing agent, stirring and mixing for 1h at the rotating speed of 500r/min, and then discharging;
(2) preparation of the curing agent composition: adding 89.4g of pyromellitic dianhydride into a reaction kettle, stirring and heating to 105 ℃, adding 10g of flexibilizer F-10, stirring at the rotation speed of 40r/min for 3 hours, cooling to 70 ℃, adding 0.6g of benzyl dimethylamine, and stirring at the temperature for 20 minutes;
(3) heating and curing for forming: 100g of modified resin composition, 60g of curing agent composition and 300g of metal silicon powder are mixed and stirred uniformly, the mutual inductor is produced in a vacuum pouring mode, and the mutual inductor is cured by a curing process of curing at 80 ℃ for 2h, curing at 110 ℃ for 2h and curing at 130 ℃ for 6 h.
Example 3
Based on example 2, comparative example 1 using an acrylate dispersant and comparative example 2 in which the metal silicon powder was not modified were provided.
The insulating materials were prepared according to examples 1 to 2 and comparative examples 1 to 2, and the use properties thereof were measured, and the results are shown in table 1.
TABLE 1 performance of the insulating materials
The test method comprises the following steps: tensile strength ASTM D638; flexural strength ASTM D790; glass transition temperature DCS.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. An insulating material having a high glass transition temperature, high temperature adhesion, characterized in that: obtained by the reaction of a modified resin composition and a curing agent composition; the modified resin composition comprises the following raw materials in parts by weight: 70 parts of four-functional group epoxy resin, 10 parts of organic silicon epoxy resin, 10 parts of phenolic resin, 10 parts of polyurethane modified epoxy resin and 8 parts of dispersing agent; the curing agent composition comprises: 89.4 parts of pyromellitic anhydride, 10 parts of toughening agent and 0.6 part of composite accelerator;
the dispersant is carboxymethyl cellulose/tartaric acid, and the preparation method comprises the following steps: adding carboxymethyl cellulose into a proper amount of deionized water, and stirring at normal temperature until the carboxymethyl cellulose is completely dissolved; adjusting the pH value of the solution to 5-6 by using 10% acetic acid solution, adding ferrocene and tartaric acid, heating to 70-80 ℃, stirring for 2-3h, and enabling the reaction system to generate oily substances; cooling to 30-40 deg.C, adding sodium chloride and sodium glycocholate, and stirring for 0.5-1 h; cooling to room temperature, separating oil, evaporating, and crystallizing to obtain carboxymethyl cellulose/tartaric acid;
the preparation method of the insulating material with high glass transition temperature and high-temperature cohesiveness comprises the following steps:
(1) preparation of modified resin composition: adding the four-functional group epoxy resin into a high-speed dispersion storage tank, and preheating to 80 ℃; then adding organic silicon epoxy resin, phenolic resin and polyurethane modified epoxy resin, stirring and mixing for 1h at the rotating speed of 600r/min, cooling to 64-65 ℃, adding a dispersing agent, stirring and mixing for 1h at the rotating speed of 500r/min, and then discharging;
(2) preparation of the curing agent composition: adding pyromellitic dianhydride into a reaction kettle, stirring and heating to 105 ℃, adding a toughening agent, stirring at the rotation speed of 40-60r/min for 3 hours, cooling to 70-75 ℃, adding a composite accelerator, and stirring at the temperature of 20-30 minutes;
(3) heating and curing for forming: mixing a modified resin composition, a curing agent and metal silicon powder according to a mass ratio of 100: 60: 300, uniformly mixing and stirring, producing the mutual inductor in a vacuum pouring mode, and curing by adopting a curing process of curing at 80 ℃ for 2 hours, curing at 110 ℃ for 2 hours and curing at 130 ℃ for 6-8 hours;
the metal silicon powder is subjected to modification treatment, and the modification method comprises the following steps: uniformly dispersing metal silicon powder in absolute ethyl alcohol, soaking for 10-15min, adjusting the pH value of the solution to 5-6 by formic acid, then adding PEG400, heating to a reflux state, keeping the temperature and stirring for 15-30min, then adding a silane coupling agent, keeping the temperature and stirring for 0.5-2h under the reflux state, naturally cooling to room temperature, transferring the obtained mixture to a-5 ℃ environment, sealing and standing for 2-6h, filtering, washing the obtained filter residue by absolute ethyl alcohol, and then sending the filter residue into a vacuum dryer for drying.
2. The insulating material having high glass transition temperature, high temperature adhesion according to claim 1, wherein: the mass ratio of the carboxymethyl cellulose to the ferrocene to the tartaric acid to the sodium chloride to the sodium glycocholate is 30-40: 1: 20-30: 2: 2.
3. the method of making an insulating material having high glass transition temperature, high temperature adhesion according to claim 1, wherein: the mass ratio of the metal silicon powder, the PEG400 and the silane coupling agent is 10-15:1-5: 1-5.
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| CN104789175A (en) * | 2015-03-06 | 2015-07-22 | 国家纳米科学中心 | Insulating and thermal conductive ablation resistant adhesive and application thereof in lightning protection |
| CN106675478A (en) * | 2016-11-23 | 2017-05-17 | 江苏恒神股份有限公司 | Resin composition and intermediate temperature structure glue film |
| CN108117631A (en) * | 2018-01-31 | 2018-06-05 | 青岛沙木新材料有限公司 | Casting type damping material |
| CN108165220A (en) * | 2018-01-22 | 2018-06-15 | 北京光科博冶科技有限责任公司 | A kind of epoxy pouring sealant and preparation method thereof and its application on nuclear power generating equipment |
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| KR940009422B1 (en) * | 1990-12-31 | 1994-10-13 | 고려화학주식회사 | Process for preparation of modifier used with semiconductor and composition thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104789175A (en) * | 2015-03-06 | 2015-07-22 | 国家纳米科学中心 | Insulating and thermal conductive ablation resistant adhesive and application thereof in lightning protection |
| CN106675478A (en) * | 2016-11-23 | 2017-05-17 | 江苏恒神股份有限公司 | Resin composition and intermediate temperature structure glue film |
| CN108165220A (en) * | 2018-01-22 | 2018-06-15 | 北京光科博冶科技有限责任公司 | A kind of epoxy pouring sealant and preparation method thereof and its application on nuclear power generating equipment |
| CN108117631A (en) * | 2018-01-31 | 2018-06-05 | 青岛沙木新材料有限公司 | Casting type damping material |
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