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Epoxy resin composition and reactive type flame retardant thereof

A technology of reactive flame retardants and epoxy resins, applied in the direction of phosphorus organic compounds, etc., can solve problems such as heat generation, fire hazards, and inability to effectively export light, and achieve the best light transmittance effect

Active Publication Date: 2015-01-21
江门建滔积层板有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking white LED as an example, the refractive index of the chip is about 2 to 4, such as GaN (n=2.5) and GaP (n=3.45) are much higher than the refractive index of epoxy resin or silicone resin packaging materials (n=1.40 ~1.53), the difference in refractive index is too large to cause total reflection, the light is reflected back into the chip and cannot be effectively exported, which will cause very serious heating problems
The heating problem seriously affects the performance and life of the LED, which brings fire hazard

Method used

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  • Epoxy resin composition and reactive type flame retardant thereof
  • Epoxy resin composition and reactive type flame retardant thereof
  • Epoxy resin composition and reactive type flame retardant thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: Sodium hydrosulfide method prepares trimercapto ethyl phosphate (A)

[0029] Add 9g (0.03mol) of trichloroethyl phosphate to the three-necked flask, and add 100ml of sodium hydrosulfide aqueous solution (about 0.9mol / L) dropwise therein under the stirring environment of 300r / min, react at constant temperature for 3h, then cool down to room temperature. Extract with 30ml of chloroform, fractionate the extract (chloroform and product) under reduced pressure, and separate the chloroform to obtain trimercaptoethyl phosphate.

Embodiment 2

[0030] Embodiment 2: Sodium hydrosulfide method prepares trimercapto ethyl phosphate (B)

[0031] Add 9 g (0.03 mol) of trichloroethyl phosphate to the three-necked flask, and add 100 ml of sodium hydrosulfide aqueous solution (about 1.5 mol / L) dropwise therein under a stirring environment of 300 r / min, react at constant temperature for 3 h, and then cool down to room temperature. Extract with 30ml of chloroform, fractionate the extract (chloroform and product) under reduced pressure, and separate the chloroform to obtain trimercaptoethyl phosphate.

Embodiment 3

[0032] Embodiment 3: sodium hydrosulfide method prepares trimercapto ethyl phosphate (C)

[0033] Add 9 g (0.03 mol) of trichloroethyl phosphate to the three-necked flask, and add 100 ml of sodium hydrosulfide aqueous solution (about 2.1 mol / L) dropwise therein under a stirring environment of 300 r / min, react at constant temperature for 3 h, and then cool down to room temperature. Extract with 30ml of chloroform, fractionate the extract (chloroform and product) under reduced pressure, and separate the chloroform to obtain trimercaptoethyl phosphate.

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Abstract

The invention relates to epoxy resin composition and a reactive type flame retardant thereof. A reactive type flame retardant used in the epoxy resin is trimercapto ethyl phosphate. The epoxy resin composition comprises trimercapto ethyl phosphate, a curing agent and epoxy resin which are uniformly mixed and cured in a preset ratio. Due to the reactive type flame retardant, the epoxy resin composition is relatively good in light permeation rate, refractive index and flame retardancy.

Description

technical field [0001] The invention relates to a resin composition, especially an epoxy resin composition and a reactive flame retardant thereof. Background technique [0002] Epoxy resin is widely used in packaging materials, coatings, civil engineering, construction, adhesives, electronics and aviation due to its excellent adhesion, corrosion resistance, chemical resistance, heat and cold resistance, electrical insulation properties and physical and mechanical properties. and other fields. However, the oxygen index of ordinary epoxy resin is only about 19.8%, which is a flammable substance. Its flammability and continuous spontaneous combustion after leaving the fire limit its application in many fields. Therefore, how to improve the flame retardant performance of epoxy resin has attracted extensive attention of researchers at home and abroad. [0003] Due to ecological concerns, halogenated flame retardants have received close attention. At this time, the flame retard...

Claims

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Application Information

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IPC IPC(8): C08G59/66C08L63/00C07F9/09
Inventor 罗超云左建东赵雷林雪春徐志娟林峰赵建青
Owner 江门建滔积层板有限公司
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