CN108165221A - A kind of electrical equipment insulating adhesive and preparation method thereof - Google Patents
A kind of electrical equipment insulating adhesive and preparation method thereof Download PDFInfo
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- CN108165221A CN108165221A CN201810023872.8A CN201810023872A CN108165221A CN 108165221 A CN108165221 A CN 108165221A CN 201810023872 A CN201810023872 A CN 201810023872A CN 108165221 A CN108165221 A CN 108165221A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/91—Polymers modified by chemical after-treatment
- C08G63/912—Polymers modified by chemical after-treatment derived from hydroxycarboxylic acids
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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
- C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
- C09J167/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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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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- General Chemical & Material Sciences (AREA)
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- Organic Insulating Materials (AREA)
Abstract
The present invention relates to binder material fields, disclose a kind of electrical equipment insulating adhesive and preparation method thereof.Including following preparation process：（1）With blender, condenser pipe, nitrogen inlet reaction vessel in add in polyalcohol, binary acid and p-methyl benzenesulfonic acid, then 100 ~ 130min of temperature reaction under nitrogen protection is vacuumized and the reaction was continued 100 ~ 120min, superbrnaching end-hydroxy polyester is made；（2）Superbrnaching end-hydroxy polyester obtained is added in into N, in N dimethylformamides, adds unrighted acid and polyacrylic acid, then heating is reacted, and realizes the terminal groups modification to hyper-branched polyester；（3）By step（2）Obtained terminal groups modification material is uniformly mixed with cosolvent, silicone acrylic emulsion, Ludox, waterborne curing agent and water, you can obtained electrical equipment insulating adhesive.Insulating adhesive prepared by the present invention is compared with common bond, and the adhesion strength of binding agent is high, good insulation preformance, while has preferable water-soluble and high temperature resistant surely.
Description
Technical field
The present invention relates to binder material fields, provide a kind of electrical equipment insulating adhesive and preparation method thereof.
Background technology
Binding agent is that one kind can be two kinds similar or the combined substance in inhomogeneity material tight ground.Using bonding
The technology that a variety of materials or component connect is known as adhesive bonding technique by agent.Adhesive is typically with base-material and auxiliary material
It forms, the mechanism of action is to treat that maxxaedium carries out repair to adherend first, is allowed to no-float；Secondly surface handles it
Afterwards, coatable coupling agent or progress adhesive primary coat, i.e., first apply a very thin primer, to protect surface；Then it is coated with gluing
Agent will be closed up assembling by maxxaedium；Finally by either physically or chemically curing, realize and be glued.In recent years, the application of binding agent
Each department in national economy has been penetrated into, has become indispensable technology in industrial production, answering in high-tech sector
With also very extensive.As new materials, the new technologies such as the very fast development of the industries such as China's automobile, electronic apparatus, nano material exist
It is applied in binding agent industry, the performance of adhesive will be more excellent from now on, and application range will constantly expand.
With the development of electric system, the increasingly raising to power equipment, element function requirement is ensureing insulation performance
Under the premise of, meet more accurate power equipment, element, secured, sealing, the requirement of lightweight, using specificity it is strong, have excellent performance,
The good binding agent of bond effect be realize bonded between power equipment, the structures such as element it is close, securely, the important hand such as sealing and anti-leakage
Section.Therefore, application of the binding agent in electric system in recent years is more and more paid attention to.
Since requirement of the electrical equipment to insulating material properties is continuously improved, good insulation preformance and attractive and durable material by
Gradually it is subject of research for, but existing many binding agent insulation effects are undesirable, so high performance bonding must be used
Agent can have stronger cohesive force and assign product better quality.Binding agent currently used for electric system mainly has third
The high performance glue such as olefin(e) acid ester gum, polyurethane adhesive, modified epoxy glue, organic silica gel.Wherein acrylate glue has drying and moulding
Soon, the advantages that transparent good, good weatherability, high adhesive property；Epoxide-resin glue resistance is big, proof voltage, electrical conductivity are big, can have
Effectiveness is in Electronic Packaging；Organic silica gel has lasting weatherability and ultraviolet radiation preventing characteristic, while has good electrical
Insulation and anti-flammability etc..All kinds of insulating cements for electrical equipment while with self character, intensity, service life,
Adhesive property etc. needs higher requirement, and therefore, the binding agent for researching and developing high-quality has good market prospects.
Chinese invention patent application number 201410535422.9 disclose a kind of inorganic building external wall heat-insulation material and producing and
Manufacture craft, the invention use Ludox, silicone acrylic emulsion as raw material, and viscosity is big, add in alumina fine powder, alumina powder and oxidation
Zinc powder so that the structure MULTILAYER COMPOSITE in binding agent, clever structure make it have stronger antijamming capability, have simultaneously
Insulation and antijamming capability, suitable for various interference environments.
Chinese invention patent application number 200610118158.4 disclose a kind of high heat conduction, low-viscosity heat-conductive adhesive and its
Preparation method is made of following raw material：Bisphenol A epoxide resin, the heat filling Al of modification2O3With BN, solvent acetone or toluene,
Curing agent acid anhydrides or imidazoles, suspension aids, accelerating agent, diluent.Preparation method is：Modified heat filling is prepared first
Al2O3 And BN, modifying agent are isocyanates or hyper-branched polyester；Added in bisphenol A epoxide resin a certain amount of Al2O3 and
BN composite powders filler and curing agent, ultrasonic agitation, and mixed with ball mill, uniform dispersion, Ran Houyi is made
Secondary addition auxiliary agent accelerating agent diluent, slowly stirs, low-viscosity heat-conductive adhesive is made.
According to above-mentioned, poor for the insulating sticky gum deposit generally existing adhesive property of electrical equipment in existing scheme, intensity is low,
Weatherability difference and short life, the shortcomings of insulation effect is undesirable, while traditional preparation side process are complicated and cost is higher, in view of
This, the present invention proposes a kind of electrical equipment insulating adhesive of novelty and preparation method thereof, can effectively solve above-mentioned skill
Art problem.
Invention content
Due at present application wider insulating adhesive it is poor there are adhesive property, intensity is low, weatherability difference and short life etc.
Shortcoming, while traditional preparation side process is complicated and cost is higher.
To solve the above problems, the present invention uses following technical scheme：
A kind of electrical equipment insulating adhesive and preparation method thereof, which is characterized in that the preparation process of the insulating adhesive
It is divided into three phases：（1）The preparation of superbrnaching end-hydroxy polyester；（2）The terminal groups modification of hyper-branched polyester；（3）Insulating adhesive
Preparation；
A kind of preparation method of electrical equipment insulating adhesive, detailed process are：
（1）First with blender, condenser pipe, nitrogen inlet reaction vessel in add in polyalcohol, binary acid and to toluene sulphur
Acid, 100 ~ 130min of temperature reaction under nitrogen protection, then vacuumizes and the reaction was continued 100 ~ 120min, obtained terminal hydroxy group surpass
Branched polyester；
（2）Superbrnaching end-hydroxy polyester obtained is added in n,N-Dimethylformamide, add unrighted acid and is gathered
Acrylic acid, then heating are reacted, and realize the terminal groups modification to hyper-branched polyester；
（3）By step（2）Obtained terminal groups modification material is mixed with cosolvent, silicone acrylic emulsion, Ludox, waterborne curing agent and water
Uniformly, you can obtained electrical equipment insulating adhesive.
Preferably, the polyalcohol is one kind in trimethylolpropane, trimethylolethane or pentaerythrite；
Preferably, the binary acid is one kind in dimethylolpropionic acid or dihydromethyl propionic acid；
Preferably, step（1）In reaction system, the total mass fraction of each raw material components in terms of 100 parts, wherein：Polyalcohol 20 ~ 35
Part, 63 ~ 79 parts of binary acid, 1 ~ 2 part of p-methyl benzenesulfonic acid；
Preferably, step（1）Reaction temperature is 110 ~ 120 DEG C；
Preferably, step（2）In reaction system, the total mass fraction of each raw material components in terms of 100 parts, wherein：Terminal hydroxy group is overspend
Change 20 ~ 40 parts of polyester, 50 ~ 75 parts of n,N-Dimethylformamide, 2 ~ 4 parts of unrighted acid, 3 ~ 6 parts of polyacrylic acid；
Preferably, step（2）Reaction temperature is 120 ~ 140 DEG C；
Preferably, the cosolvent is at least one of sodium benzoate, sodium salicylate, p-aminobenzoic acid or acetamide；
Preferably, the solid content of the silicone acrylic emulsion is 44 ~ 48%, and viscosity is 400 ~ 600mPas；
Preferably, the waterborne curing agent is one kind in organic amine curing agent, organic acid anhydride curing agent or imidazole curing agent；
Preferably, step（3）The total mass fraction of each component in terms of 100 parts, wherein：15 ~ 25 parts of terminal groups modification material, cosolvent
0.5 ~ 1 part, 5 ~ 10 parts of silicone acrylic emulsion, 3 ~ 8 parts of Ludox, 0.5 ~ 1 part of waterborne curing agent, 55 ~ 76 parts of water.
A kind of electrical equipment insulating adhesive being prepared by the above method.
The adhesion strength of insulating adhesive, heat-resisting ability, water solubility and insulation resistance prepared by the test present invention, and with
Silicone adhesive agent, epoxy glue bonding agent compare, and method of the invention has a clear superiority, as shown in table 1.
Table 1：
The present invention provides a kind of electrical equipment insulating adhesives and preparation method thereof, compared with prior art, protrude
Feature and excellent effect are：
1st, it proposes using the method that electrical equipment insulating adhesive is prepared to superbrnaching end-hydroxy polyester modification.
2nd, by introducing dissaving structure, the crosslink density of solidfied material in binding agent is improved, has been obviously improved bonding
The caking property and insulation performance of agent.
3rd, by carrying out terminal groups modification to hyper-branched polyester so that insulating cement good water solubility, while accessed in strand
The polyacrylic acid of polar group, hence it is evident that improve the high temperature resistance of binding agent.
4th, preparation process of the invention is simple, and low energy consumption, cheap, has fabulous application prospect.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to following example.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
（1）The detailed process of the preparation of superbrnaching end-hydroxy polyester is：
First with blender, condenser pipe, nitrogen inlet reaction vessel in add in polyalcohol, binary acid and p-methyl benzenesulfonic acid,
Temperature reaction 120min under nitrogen protection, then vacuumizes and the reaction was continued 110min, and superbrnaching end-hydroxy polyester is made；It is more
First alcohol is trimethylolpropane；Binary acid is dimethylolpropionic acid；Esterification reaction temperature is 115 DEG C；
In esterification system, the total mass fraction of each raw material components in terms of 100 parts, wherein：28 parts of polyalcohol, binary acid 71
Part, 1 part of p-methyl benzenesulfonic acid；
（2）The detailed process of the terminal groups modification of hyper-branched polyester is：
First superbrnaching end-hydroxy polyester obtained is added in n,N-Dimethylformamide, adds unrighted acid and poly- third
Olefin(e) acid, then heating are reacted, and realize the terminal groups modification to hyper-branched polyester；Terminal groups modification reaction temperature is 130 DEG C；
In terminal groups modification reaction system, the total mass fraction of each raw material components in terms of 100 parts, wherein：Superbrnaching end-hydroxy polyester
30 parts, 63 parts of n,N-Dimethylformamide, 3 parts of unrighted acid, 4 parts of polyacrylic acid；
（3）The detailed process of the preparation of insulating adhesive is：
Modified hyper-branched polyester is uniformly mixed with cosolvent, silicone acrylic emulsion, Ludox, waterborne curing agent and water, you can system
Obtain electrical equipment insulating adhesive；Cosolvent is sodium benzoate；The solid content of silicone acrylic emulsion is 46%, viscosity 500mPa
s；Waterborne curing agent is organic amine curing agent；
In insulating adhesive, the total mass fraction of each component in terms of 100 parts, wherein：Modified 20 parts of hyper-branched polyester, cosolvent
0.8 part, 7 parts of silicone acrylic emulsion, 6 parts of Ludox, 0.7 part of waterborne curing agent, 65.5 parts of water.
Insulating adhesive made from embodiment 1, adhesion strength, heat-resisting ability, water solubility and insulation resistance such as 2 institute of table
Show.
Embodiment 2
（1）The detailed process of the preparation of superbrnaching end-hydroxy polyester is：
First with blender, condenser pipe, nitrogen inlet reaction vessel in add in polyalcohol, binary acid and p-methyl benzenesulfonic acid,
Temperature reaction 100min under nitrogen protection, then vacuumizes and the reaction was continued 100min, and superbrnaching end-hydroxy polyester is made；It is more
First alcohol is trimethylolethane；Binary acid is dihydromethyl propionic acid；Esterification reaction temperature is 110 DEG C；
In esterification system, the total mass fraction of each raw material components in terms of 100 parts, wherein：20 parts of polyalcohol, binary acid 79
Part, 1 part of p-methyl benzenesulfonic acid；
（2）The detailed process of the terminal groups modification of hyper-branched polyester is：
First superbrnaching end-hydroxy polyester obtained is added in n,N-Dimethylformamide, adds unrighted acid and poly- third
Olefin(e) acid, then heating are reacted, and realize the terminal groups modification to hyper-branched polyester；Terminal groups modification reaction temperature is 120 DEG C；
In terminal groups modification reaction system, the total mass fraction of each raw material components in terms of 100 parts, wherein：Superbrnaching end-hydroxy polyester
20 parts, 75 parts of n,N-Dimethylformamide, 2 parts of unrighted acid, 3 parts of polyacrylic acid；
（3）The detailed process of the preparation of insulating adhesive is：
Modified hyper-branched polyester is uniformly mixed with cosolvent, silicone acrylic emulsion, Ludox, waterborne curing agent and water, you can system
Obtain electrical equipment insulating adhesive；Cosolvent is sodium salicylate；The solid content of silicone acrylic emulsion is 44%, viscosity 400mPa
s；Waterborne curing agent is organic acid anhydride curing agent；
In insulating adhesive, the total mass fraction of each component in terms of 100 parts, wherein：Modified 15 parts of hyper-branched polyester, cosolvent
0.5 part, 5 parts of silicone acrylic emulsion, 3 parts of Ludox, 0.5 part of waterborne curing agent, 76 parts of water.
Insulating adhesive made from embodiment 2, adhesion strength, heat-resisting ability, water solubility and insulation resistance such as 2 institute of table
Show.
Embodiment 3
（1）The detailed process of the preparation of superbrnaching end-hydroxy polyester is：
First with blender, condenser pipe, nitrogen inlet reaction vessel in add in polyalcohol, binary acid and p-methyl benzenesulfonic acid,
Temperature reaction 130min under nitrogen protection, then vacuumizes and the reaction was continued 120min, and superbrnaching end-hydroxy polyester is made；It is more
First alcohol is pentaerythrite；Binary acid is dimethylolpropionic acid；Esterification reaction temperature is 120 DEG C；
In esterification system, the total mass fraction of each raw material components in terms of 100 parts, wherein：35 parts of polyalcohol, binary acid 63
Part, 2 parts of p-methyl benzenesulfonic acid；
（2）The detailed process of the terminal groups modification of hyper-branched polyester is：
First superbrnaching end-hydroxy polyester obtained is added in n,N-Dimethylformamide, adds unrighted acid and poly- third
Olefin(e) acid, then heating are reacted, and realize the terminal groups modification to hyper-branched polyester；Terminal groups modification reaction temperature is 140 DEG C；
In terminal groups modification reaction system, the total mass fraction of each raw material components in terms of 100 parts, wherein：Superbrnaching end-hydroxy polyester
40 parts, 50 parts of n,N-Dimethylformamide, 4 parts of unrighted acid, 6 parts of polyacrylic acid；
（3）The detailed process of the preparation of insulating adhesive is：
Modified hyper-branched polyester is uniformly mixed with cosolvent, silicone acrylic emulsion, Ludox, waterborne curing agent and water, you can system
Obtain electrical equipment insulating adhesive；Cosolvent is p-aminobenzoic acid；The solid content of silicone acrylic emulsion is 48%, and viscosity is
600mPa·s；Waterborne curing agent is imidazole curing agent；
In insulating adhesive, the total mass fraction of each component in terms of 100 parts, wherein：Modified 25 parts of hyper-branched polyester, cosolvent
1 part, 10 parts of silicone acrylic emulsion, 8 parts of Ludox, 1 part of waterborne curing agent, 55 parts of water.
Insulating adhesive made from embodiment 3, adhesion strength, heat-resisting ability, water solubility and insulation resistance such as 2 institute of table
Show.
Embodiment 4
（1）The detailed process of the preparation of superbrnaching end-hydroxy polyester is：
First with blender, condenser pipe, nitrogen inlet reaction vessel in add in polyalcohol, binary acid and p-methyl benzenesulfonic acid,
Temperature reaction 105min under nitrogen protection, then vacuumizes and the reaction was continued 108min, and superbrnaching end-hydroxy polyester is made；It is more
First alcohol is trimethylolpropane；Binary acid is dihydromethyl propionic acid；Esterification reaction temperature is 112 DEG C；
In esterification system, the total mass fraction of each raw material components in terms of 100 parts, wherein：22 parts of polyalcohol, binary acid 77
Part, 1 part of p-methyl benzenesulfonic acid；
（2）The detailed process of the terminal groups modification of hyper-branched polyester is：
First superbrnaching end-hydroxy polyester obtained is added in n,N-Dimethylformamide, adds unrighted acid and poly- third
Olefin(e) acid, then heating are reacted, and realize the terminal groups modification to hyper-branched polyester；Terminal groups modification reaction temperature is 125 DEG C；
In terminal groups modification reaction system, the total mass fraction of each raw material components in terms of 100 parts, wherein：Superbrnaching end-hydroxy polyester
25 parts, 68 parts of n,N-Dimethylformamide, 3 parts of unrighted acid, 4 parts of polyacrylic acid；
（3）The detailed process of the preparation of insulating adhesive is：
Modified hyper-branched polyester is uniformly mixed with cosolvent, silicone acrylic emulsion, Ludox, waterborne curing agent and water, you can system
Obtain electrical equipment insulating adhesive；Cosolvent is acetamide；The solid content of silicone acrylic emulsion is 45%, viscosity 450mPas；
Waterborne curing agent is organic amine curing agent；
In insulating adhesive, the total mass fraction of each component in terms of 100 parts, wherein：Modified 18 parts of hyper-branched polyester, cosolvent
0.5 part, 6 parts of silicone acrylic emulsion, 4 parts of Ludox, 0.5 part of waterborne curing agent, 71 parts of water.
Insulating adhesive made from embodiment 4, adhesion strength, heat-resisting ability, water solubility and insulation resistance such as 2 institute of table
Show.
Embodiment 5
（1）The detailed process of the preparation of superbrnaching end-hydroxy polyester is：
First with blender, condenser pipe, nitrogen inlet reaction vessel in add in polyalcohol, binary acid and p-methyl benzenesulfonic acid,
Temperature reaction 125min under nitrogen protection, then vacuumizes and the reaction was continued 115min, and superbrnaching end-hydroxy polyester is made；It is more
First alcohol is trimethylolpropane；Binary acid is dimethylolpropionic acid；Esterification reaction temperature is 118 DEG C；
In esterification system, the total mass fraction of each raw material components in terms of 100 parts, wherein：32 parts of polyalcohol, binary acid 64
Part, 2 parts of p-methyl benzenesulfonic acid；
（2）The detailed process of the terminal groups modification of hyper-branched polyester is：
First superbrnaching end-hydroxy polyester obtained is added in n,N-Dimethylformamide, adds unrighted acid and poly- third
Olefin(e) acid, then heating are reacted, and realize the terminal groups modification to hyper-branched polyester；Terminal groups modification reaction temperature is 138 DEG C；
In terminal groups modification reaction system, the total mass fraction of each raw material components in terms of 100 parts, wherein：Superbrnaching end-hydroxy polyester
35 parts, 57 parts of n,N-Dimethylformamide, 3 parts of unrighted acid, 5 parts of polyacrylic acid；
（3）The detailed process of the preparation of insulating adhesive is：
Modified hyper-branched polyester is uniformly mixed with cosolvent, silicone acrylic emulsion, Ludox, waterborne curing agent and water, you can system
Obtain electrical equipment insulating adhesive；Cosolvent is sodium benzoate；The solid content of silicone acrylic emulsion is 47%, viscosity 550mPa
s；Waterborne curing agent is organic amine curing agent；
In insulating adhesive, the total mass fraction of each component in terms of 100 parts, wherein：Modified 22 parts of hyper-branched polyester, cosolvent
1 part, 8 parts of silicone acrylic emulsion, 6 parts of Ludox, 1 part of waterborne curing agent, 62 parts of water.
Insulating adhesive made from embodiment 5, adhesion strength, heat-resisting ability, water solubility and insulation resistance such as 2 institute of table
Show.
Embodiment 6
（1）The detailed process of the preparation of superbrnaching end-hydroxy polyester is：
First with blender, condenser pipe, nitrogen inlet reaction vessel in add in polyalcohol, binary acid and p-methyl benzenesulfonic acid,
Temperature reaction 115min under nitrogen protection, then vacuumizes and the reaction was continued 115min, and superbrnaching end-hydroxy polyester is made；It is more
First alcohol is pentaerythrite；Binary acid is dimethylolpropionic acid；Esterification reaction temperature is 115 DEG C；
In esterification system, the total mass fraction of each raw material components in terms of 100 parts, wherein：28 parts of polyalcohol, binary acid 70
Part, 2 parts of p-methyl benzenesulfonic acid；
（2）The detailed process of the terminal groups modification of hyper-branched polyester is：
First superbrnaching end-hydroxy polyester obtained is added in n,N-Dimethylformamide, adds unrighted acid and poly- third
Olefin(e) acid, then heating are reacted, and realize the terminal groups modification to hyper-branched polyester；Terminal groups modification reaction temperature is 135 DEG C；
In terminal groups modification reaction system, the total mass fraction of each raw material components in terms of 100 parts, wherein：Superbrnaching end-hydroxy polyester
35 parts, 57 parts of n,N-Dimethylformamide, 3 parts of unrighted acid, 5 parts of polyacrylic acid；
（3）The detailed process of the preparation of insulating adhesive is：
Modified hyper-branched polyester is uniformly mixed with cosolvent, silicone acrylic emulsion, Ludox, waterborne curing agent and water, you can system
Obtain electrical equipment insulating adhesive；Cosolvent is sodium salicylate；The solid content of silicone acrylic emulsion is 45%, viscosity 520mPa
s；Waterborne curing agent is imidazole curing agent；
In insulating adhesive, the total mass fraction of each component in terms of 100 parts, wherein：Modified 22 parts of hyper-branched polyester, cosolvent
1 part, 8 parts of silicone acrylic emulsion, 6 parts of Ludox, 1 part of waterborne curing agent, 63 parts of water.
Insulating adhesive made from embodiment 6, adhesion strength, heat-resisting ability, water solubility and insulation resistance such as 2 institute of table
Show.
Comparative example 1
（1）The preparation of superbrnaching end-hydroxy polyester：It is consistent with embodiment 6；
（2）Terminal groups modification is not carried out；
（3）The preparation of insulating adhesive：It is consistent with embodiment 6；
Insulating adhesive made from comparative example 1, adhesion strength, heat-resisting ability, water solubility and insulation resistance are as shown in table 2.
Table 2：
Claims (10)
1. a kind of preparation method of electrical equipment insulating adhesive, detailed process are：
（1）First with blender, condenser pipe, nitrogen inlet reaction vessel in add in polyalcohol, binary acid and to toluene sulphur
Acid, 100 ~ 130min of temperature reaction under nitrogen protection, then vacuumizes and the reaction was continued 100 ~ 120min, obtained terminal hydroxy group surpass
Branched polyester；
（2）Superbrnaching end-hydroxy polyester obtained is added in n,N-Dimethylformamide, add unrighted acid and is gathered
Acrylic acid, then heating are reacted, and realize the terminal groups modification to hyper-branched polyester；
（3）By step（2）Obtained terminal groups modification material is mixed with cosolvent, silicone acrylic emulsion, Ludox, waterborne curing agent and water
Uniformly, you can obtained electrical equipment insulating adhesive.
2. a kind of preparation method of electrical equipment insulating adhesive according to claim 1, it is characterised in that：It is described polynary
Alcohol is one kind in trimethylolpropane, trimethylolethane or pentaerythrite；The binary acid is dimethylolpropionic acid or two
One kind in hydroxymethyl propionic acid.
3. a kind of preparation method of electrical equipment insulating adhesive according to claim 1, it is characterised in that：Step（1）
In reaction system, the total mass fraction of each raw material components in terms of 100 parts, wherein：20 ~ 35 parts of polyalcohol, 63 ~ 79 parts of binary acid,
1 ~ 2 part of p-methyl benzenesulfonic acid.
4. a kind of preparation method of electrical equipment insulating adhesive according to claim 1, it is characterised in that：Step（1）
Reaction temperature is 110 ~ 120 DEG C.
5. a kind of preparation method of electrical equipment insulating adhesive according to claim 1, it is characterised in that：Step（2）
In reaction system, the total mass fraction of each raw material components in terms of 100 parts, wherein：20 ~ 40 parts of superbrnaching end-hydroxy polyester, N, N-
50 ~ 75 parts of dimethylformamide, 2 ~ 4 parts of unrighted acid, 3 ~ 6 parts of polyacrylic acid.
6. a kind of preparation method of electrical equipment insulating adhesive according to claim 1, it is characterised in that：Step（2）
Reaction temperature is 120 ~ 140 DEG C.
7. a kind of preparation method of electrical equipment insulating adhesive according to claim 1, it is characterised in that：The hydrotropy
Agent is at least one of sodium benzoate, sodium salicylate, p-aminobenzoic acid or acetamide；The solid content of the silicone acrylic emulsion is
44 ~ 48%, viscosity is 400 ~ 600mPas；The waterborne curing agent is organic amine curing agent, organic acid anhydride curing agent or imidazoles
One kind in class curing agent.
8. a kind of preparation method of electrical equipment insulating adhesive according to claim 1, it is characterised in that：The hydrotropy
Agent is at least one of sodium benzoate, sodium salicylate, p-aminobenzoic acid or acetamide；The solid content of the silicone acrylic emulsion is
44 ~ 48%, viscosity is 400 ~ 600mPas；The waterborne curing agent is organic amine curing agent, organic acid anhydride curing agent or imidazoles
One kind in class curing agent.
9. a kind of preparation method of electrical equipment insulating adhesive according to claim 1, it is characterised in that：Step（3）
The total mass fraction of each component in terms of 100 parts, wherein：15 ~ 25 parts of terminal groups modification material, 0.5 ~ 1 part of cosolvent, silicone acrylic emulsion 5 ~
10 parts, 3 ~ 8 parts of Ludox, 0.5 ~ 1 part of waterborne curing agent, 55 ~ 76 parts of water.
10. a kind of electrical equipment insulating adhesive that any one of claim 1-9 the methods are prepared.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810023872.8A CN108165221A (en) | 2018-01-10 | 2018-01-10 | A kind of electrical equipment insulating adhesive and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810023872.8A CN108165221A (en) | 2018-01-10 | 2018-01-10 | A kind of electrical equipment insulating adhesive and preparation method thereof |
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| CN108165221A true CN108165221A (en) | 2018-06-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110841575A (en) * | 2019-11-20 | 2020-02-28 | 郎蕾 | Equipment for bonding glass fiber reinforced plastic by using polyesterification polycondensation reaction |
-
2018
- 2018-01-10 CN CN201810023872.8A patent/CN108165221A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110841575A (en) * | 2019-11-20 | 2020-02-28 | 郎蕾 | Equipment for bonding glass fiber reinforced plastic by using polyesterification polycondensation reaction |
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Application publication date: 20180615 |