Elastic epoxy fire-proof potting compound and preparation method thereof

A technology of potting glue and epoxy, which is applied in the field of potting glue, can solve the problems of high viscosity, difficult leveling, easy cracking, high elastic modulus of cured epoxy resin, etc., and achieve low viscosity, elastic peeling, and easy peeling Effect

Active Publication Date: 2017-12-01
HANGZHOU ZHIJIANG SILICONE CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of the electrical and electronic industry, the requirements for the performance of cured epoxy resin are getting higher and higher. At present, the potting materials of many electronic and electrical components require various properties such as flame retardancy, leveling, and elasticity. Epoxy potting glue does not have flame retardant properties, and usually has a high viscosity and is not easy to level, while the cured epoxy resin has a high modulus of elasticity and is brittle and easy to break

Method used

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  • Elastic epoxy fire-proof potting compound and preparation method thereof
  • Elastic epoxy fire-proof potting compound and preparation method thereof

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preparation example Construction

[0061] The present invention also provides a method for preparing the above-mentioned elastic epoxy flame-retardant potting glue, comprising the following steps:

[0062] Preparation of component A:

[0063] Mix polyurethane modified epoxy resin, epoxy resin, diluent, liquid phosphate flame retardant and defoamer at 5-10 rpm for 5-10 minutes;

[0064] Then add melamine salt powder flame retardant and aluminum hydroxide filler, mix and stir for 20-30 minutes under the condition of 20-30rpm, and then vacuum defoam for 5 minutes to obtain component A;

[0065] Preparation of component B:

[0066] Mix and stir the curing agent and the curing accelerator at 5-10 rpm for 5-10 minutes, then add calcium carbonate filler, mix and stir at 20-30 rpm for 20-30 minutes, and vacuum defoam for 5 minutes to obtain B components;

[0067] There is no sequence restriction on the preparation of the A component and the B component.

[0068] The present invention adopts a system of low-viscosit...

Embodiment 1～6

[0071] 1. Raw material ratio: Weigh the raw materials according to the types and amounts of raw materials shown in Table 1;

[0072] 2. Preparation method:

[0073] Preparation of component A:

[0074] Mix polyurethane modified epoxy resin, epoxy resin, diluent, liquid phosphate flame retardant and defoamer at 5-10 rpm for 5-10 minutes;

[0075] Then add melamine salt powder flame retardant and aluminum hydroxide filler, mix and stir for 20-30 minutes under the condition of 20-30rpm, and vacuum degassing for 5 minutes to obtain component A;

[0076] Preparation of component B:

[0077] Mix and stir the curing agent and the curing accelerator at 5-10 rpm for 5-10 minutes, then add calcium carbonate filler, mix and stir at 20-30 rpm for 20-30 minutes, and vacuum defoam for 5 minutes to obtain B components;

[0078] There is no sequence restriction on the preparation of the A component and the B component.

[0079] 3. Test method:

[0080] The performance test of the obtain...

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Abstract

The invention provides an elastic epoxy fire-proof potting compound. The potting compound comprises a component A and a component B, wherein the component A is prepared from polyurethane modified epoxy resin, epoxy resin, an active diluting agent, a defoaming agent, melamine powder flame retardant, liquid phosphate flame retardant and aluminum hydrate filler; and the component B is prepared from a curing agent, a curing accelerant and calcium carbonate filler. The elastic epoxy fire-proof potting compound is prepared from a system of low-viscosity flexible epoxy resin, flexibilizer and a curing agent combined with tributyl phosphate, epoxy resin environment-friendly flame retardant, aluminum hydrate and the like, so that the epoxy components A and B have the advantages of low viscosity and levelling performance, the condensate is elastic and can be easily peeled, and epoxy resin condensate UL94 reaches V-1 level in a flame-retardant test.

Description

technical field [0001] The invention belongs to the technical field of potting glue, and in particular relates to an elastic epoxy flame-retardant potting glue and a preparation method thereof. Background technique [0002] With the development of the electrical and electronic industry, the requirements for the performance of cured epoxy resin are getting higher and higher. At present, the potting materials of many electronic and electrical components require various properties such as flame retardancy, leveling, and elasticity. Epoxy potting glue does not have flame retardant properties, and usually has a high viscosity and is not easy to level, while the cured epoxy resin has a high modulus of elasticity and is brittle and easy to break. [0003] The cured epoxy resin is usually a rigid material, and it is difficult to effectively peel off the glue when the electrical components are repaired. In order to make the cured product easy to peel off, it is necessary to make the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J163/00C09J11/04C09J11/06
CPCC08K2003/2227C08K2003/265C08L2201/02C08L2203/206C09J11/04C09J11/06C09J175/04C08L63/00C08K13/02C08K3/22C08K3/26C08K5/34928C08K5/523C08K5/521
Inventor 何永富桑广艺夏佳斌钱立飞
Owner HANGZHOU ZHIJIANG SILICONE CHEM
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