High-temperature resistant flame-retardant epoxy glue and preparation method thereof

A technology of epoxy adhesive and high temperature resistance, which is applied in the direction of epoxy resin adhesive, modified epoxy resin adhesive, novolac epoxy resin adhesive, etc. It can solve the problem of strength decline and difficult to meet the use requirements, etc. problems, to achieve the effect of improving the prevention of spontaneous combustion, improving the heat distortion temperature and thermal oxidation stability, and improving the temperature resistance

Active Publication Date: 2015-06-24
上海海鹰粘接科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The various performance indicators of ordinary epoxy adhesives can be modified appropriately, and can achieve excellent performance indicators at room temperature, meeting the requirements of various application fields. However, as a polymer composite material, it requires high temperature resistance. It is difficult to meet the requirements of the application in the environment. Generally, the maximum use temperature of epoxy glue is about 150°C. If it is used for a long time under the condition of 200°C, the strength can almost drop to zero.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A high-temperature-resistant flame-retardant epoxy glue and a preparation method thereof, the method comprising the following steps:

[0041] First component preparation method

[0042] (1) Preheat 45 kg of amino tetrafunctional epoxy resin, 12 kg of bisphenol A epoxy resin (E51), and 5 kg of carboxyl-terminated liquid nitrile rubber modified epoxy resin at 80-100°C conditions for at least 4 hours.

[0043] (2) 45 kilograms of amino tetrafunctional epoxy resins required by the formula, 12 kilograms of bisphenol A epoxy resins (E51), and 5 kilograms of carboxyl-terminated liquid nitrile rubber modified epoxy resins are put into the reactor, stirred and heated to 110-120°C.

[0044] (3) Keep stirring and put 19 kg of silicon micropowder into the reaction kettle, and turn on the vacuum defoaming, stir for 1 to 2 hours, and then start to cool.

[0045] (4) Add 12 kg of flame retardant decabromodiphenyl ether, 6 kg of antimony trioxide and 1 kg of antioxidant (1010) to th...

Embodiment 2

[0058] A high-temperature-resistant flame-retardant epoxy glue and a preparation method thereof, the method comprising the following steps:

[0059] First component preparation method

[0060] (1) Preheat 50 kg of novolac epoxy resin (F51), 10 kg of p-amino-m-cresol glycidylamine epoxy resin DJF, and 5 kg of carboxyl-terminated liquid nitrile rubber (CTBN), at 80-100 °C conditions for at least 4 hours.

[0061] (2) Put 50 kg of novolak epoxy resin (F51), 10 kg of p-amino m-cresol glycidylamine epoxy resin DJF, and 5 kg of carboxyl-terminated liquid nitrile rubber (CTBN) into the reactor, stir and heat to 110- 120°C.

[0062] (3) Keep stirring and put 17 kg of silicon micropowder into the reaction kettle, and turn on the vacuum defoaming, stir for 1 to 2 hours, and then start cooling.

[0063] (4) After cooling to 80-85°C, add 8 kg of phosphorus-nitrogen composite flame retardant, 4 kg of antimony trioxide, 4 kg of magnesium hydroxide, and 2 kg of antioxidant (B215), and keep ...

Embodiment 3

[0076] A high temperature resistant flame retardant epoxy glue, which is a two-component epoxy glue. When used, the first component and the second component are mixed at a weight ratio of 2:1.

[0077] The first component is prepared using the constituent raw materials in the following amounts:

[0078] Multifunctional epoxy resin 30kg, low viscosity epoxy resin 5kg, active toughening agent 3kg, temperature-resistant reinforcing filler 10kg, flame retardant 10kg, antioxidant 0.3kg,

[0079] The second component is prepared using the constituent raw materials in the following amounts:

[0080] 70kg of temperature-resistant curing agent, 10kg of temperature-resistant reinforcing material, 0.3kg of coupling agent,

[0081] In this embodiment, the multifunctional epoxy resin is aminophenol-based trifunctional epoxy resin, the low-viscosity epoxy resin is pyroglucinol triglycidyl ether epoxy resin, and the active toughening agent is carboxyl-terminated liquid nitrile rubber Modif...

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Abstract

The invention relates to high-temperature resistant flame-retardant epoxy glue and a preparation method of the high-temperature resistant flame-retardant epoxy glue. The epoxy glue is a double-component epoxy glue; when the epoxy glue is used, a first component and a second component are mixed in a weight ratio of 4:(2-3); the first component is prepared from the following raw materials in parts by weight: 30-50 parts of polyfunctional epoxy resin, 5-15 parts of low-viscosity epoxy resin, 3-10 parts of an active toughening agent, 10-30 parts of temperature-resistant reinforcing fillers, 10-15 parts of flame retardant and 0.3-3 parts of antioxidant; the second component is prepared from the following raw materials in parts by weight: 70-95 parts of a temperature-resistant curing agent, 10-30 parts of temperature-resistant reinforcing fillers and 0.3-1 part of a coupling agent. Compared with the prior art, the high-temperature resistant flame-retardant epoxy glue has the advantages of high high-temperature toughness, high adhesion strength, high flame retardant performance and the like.

Description

technical field [0001] The invention relates to an epoxy glue and a preparation method thereof, in particular to a high-temperature-resistant and flame-retardant epoxy glue and a preparation method thereof. Background technique [0002] The excellent physical, mechanical and electrical insulation properties of epoxy resin, the bonding performance with various materials, and the flexibility of its use process are not available in other thermosetting plastics. Therefore, various coatings, composite materials, pouring potting materials, adhesives, molding materials and injection molding materials prepared from epoxy resins have been widely used in various fields of the national economy. The various performance indicators of ordinary epoxy adhesives can be modified appropriately, and can achieve excellent performance indicators at room temperature, meeting the requirements of various application fields. However, as a polymer composite material, it requires high temperature resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J163/02C09J163/10C09J177/00C09J163/04C09J113/00C09J11/04C09J11/06
Inventor 樊利东李厚堂魏云斌
Owner 上海海鹰粘接科技有限公司
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