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Flame-retardant epoxy resin compound

A technology of epoxy resin and compound, which is applied in the direction of epoxy resin glue, epoxy resin coating, adhesive type, etc., can solve the problem that halogen-based flame-retardant polymer materials fail to obtain green environmental protection marks, and achieve environmental protection good performance

Active Publication Date: 2013-02-27
无锡嘉联电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, halogenated flame retardant polymer materials failed to obtain the green environmental protection mark in Europe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Prepare flame retardant epoxy resin compound for potting of electronic appliances with environmental requirements and flame retardant requirements.

[0027] Preparation of component A: 24g of bisphenol F epoxy resin (Dow D.E.R. TM 354), 5.9g of glycidyl tertiary carbonic acid ester, and 0.1g of antifoaming agent were mixed uniformly under high-speed stirring, and then 30g of basic zinc carbonate and 40g of aluminum hydroxide were added, stirred at high speed for 1 to 2h and mixed uniformly so that the surface of the filler was obtained Wet fully, get component A after defoaming.

[0028] Preparation of component B: Mix 96g of polyetheramine D-230 and 4g of DMP-30 evenly to obtain component B.

[0029] Components A and B are mixed at a ratio of 10:1, the mixture has good fluidity, and the flame retardancy of the cured product after curing at 60°C / 1h reaches UL-94V0 flame retardancy. The compound has good electrical properties and mechanical properties, and can be used ...

Embodiment 2

[0031] Prepare flame-retardant epoxy resin coatings for floor coatings in workshops with clean requirements.

[0032] Preparation of component A: Mix 10g of epoxy resin E44, 15g of epoxy resin E54, 10g of butyl glycidyl ether, 0.1g of leveling agent, and 0.05g of defoaming agent at high speed and mix evenly, then add the matching granules 20g of basic sodium carbonate and 44.85g of aluminum hydroxide were stirred at high speed for 1 hour and mixed uniformly to obtain component A.

[0033] B component preparation: modified alicyclic amine curing agent

[0034] Components A and B are mixed according to the ratio of 100:15, and then an appropriate amount of solvent is added to adjust the viscosity to a viscosity suitable for the construction method. The mixture does not contain flame retardants such as red phosphorus. The ground self-leveling construction required by different colors, and the flame retardant performance of the compound can reach UL-94HB level flame retardant.

Embodiment 3

[0036] Formulated one-component flame retardant epoxy adhesive.

[0037] Cycloaliphatic epoxy resin (Wuhan Xinjing: UVR6110) 80g, carboxy-terminated nitrile rubber modified epoxy resin 20g, after mixing evenly, add hexafluoroantimonate cationic curing agent 3g, fumed silica 3g, high-speed stirring Mix well, then add 100g of basic zinc carbonate and 120g of aluminum hydroxide, control the temperature within 40°C and mix evenly at high speed to obtain a one-component adhesive with certain thixotropy. The compound can be cured at a medium temperature of 80°C. The cured product has high heat resistance, a glass transition temperature of over 150°C, and a flame-retardant performance of UL-94V0.

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Abstract

The invention relates to a flame-retardant epoxy resin compound containing no halogenated flame retardant, no phosphorus flame retardant, no nitrogen system flame retardation and no other common fire retardants. The compound comprises (i) 10-35 wt% of at least one organic epoxide having the functionality of 1 or more; (ii) 1-20 wt% of at least one epoxide hardener; (iii) 43-82 wt% of flame retardants containing no halogen which comprise at least one mixture of basic carbonate and aluminium base hydroxide; and (iv) 0-2 wt% of functional aids. According to the invention, the flame-resistant effect is achieved by adding the mixture of basic carbonate and aluminium base hydroxide in the epoxy resin system, and using carbon dioxide and steam generated by the high temperature combustion of the two mixtures to isolate oxygen and reduce temperature.

Description

technical field [0001] The invention relates to a flame-retardant epoxy resin compound, which can be used as secondary processing products of epoxy resin such as potting materials, adhesives, coatings, molding compounds, etc., and applied to various fields with flame-retardant and environmental protection requirements . Background technique [0002] Cured epoxy resin has excellent electrical insulation properties and physical and mechanical properties, and is widely used in electrical appliances, electronics, machinery industries and other fields. However, its oxygen index is only about 19.5, which is a flammable substance. In recent years, various application fields have put forward higher requirements for its flame resistance, and extensive and in-depth research has been carried out. [0003] There are two methods of flame retardant for cured epoxy resin: additive flame retardant and reactive flame retardant. The additive type is to add various flame-retardant additives...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/40C08G59/20C08K13/02C08K3/26C08K3/22C08K13/06C08K9/00C09K3/10C09J163/00C09J11/04C09D163/00C09D7/12
Inventor 黄恒兴
Owner 无锡嘉联电子材料有限公司