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Epoxy resin flame retardant containing phosphorus and nitrogen and preparation method of epoxy resin flame retardant

A nitrogen epoxy resin and flame retardant technology is applied in the field of phosphorus and nitrogen epoxy resin flame retardants and their preparation, which can solve problems such as fire hazards, and achieve the effects of convenient post-processing, mild conditions and easy control.

Inactive Publication Date: 2016-09-07
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the manufacturer's practice of reducing production costs and "responsive to environmental protection regulations" has led to serious fire hazards
This allows an extremely small source of ignition to keep an unflammable TV set burning and has killed several people

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Equipped with reflux condenser, thermometer, N 2 Add 60ml of dichloromethane as a solvent to the 100ml four-necked bottle of the introduction tube and magnet, then add 21.6g of DOPO and 0.5g of triethylamine; add 8.7g of 2,4-TDI and 20ml of dichloromethane into the constant pressure dropping funnel dilution. Pass N 2 For protection, start dropwise addition of 2,4-TDI solution at 20°C for reaction, after 1.0h of 2,4-TDI dropwise addition, raise the temperature to 35°C for 3h reaction. After the reaction was completed, the mixture was filtered, washed and dried to obtain a white solid.

Embodiment 2

[0025] Equipped with reflux condenser, thermometer, N 2 Add 150ml of dichloromethane as a solvent to the 250ml four-necked bottle of the introduction tube and magnet, then add 64.8g of DOPO and 1.5g of triethylamine; add 26.1g of 2,4-TDI and 50ml of dichloromethane into the constant pressure dropping funnel dilution. Pass N 2 For protection, 2,4-TDI solution was added dropwise at 20°C for reaction. After 2.0h of 2,4-TDI was added dropwise, the temperature was raised to 35°C for 8h. After the reaction was completed, the mixture was filtered, washed and dried to obtain a white solid.

Embodiment 3

[0027] Equipped with reflux condenser, thermometer, N 2 Add 300ml of dichloromethane as a solvent to the 500ml four-necked bottle of the introduction tube and magnet, then add 108.0g of DOPO and 2.5g of triethylamine; add 43.5g of 2,4-TDI and 100ml of dichloromethane into the constant pressure dropping funnel dilution. Pass N 2 For protection, start dropwise addition of 2,4-TDI solution at 20°C for reaction, after 3.0h of 2,4-TDI dropwise addition, raise the temperature to 35°C for 12h reaction. After the reaction was completed, the mixture was filtered, washed and dried to obtain a white solid.

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PUM

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Abstract

The invention discloses an epoxy resin flame retardant containing phosphorus and nitrogen and a preparation method of the epoxy resin flame retardant, and relates to a chemical curing agent and a preparation method thereof. The epoxy resin flame retardant is prepared from the following raw materials: phosphaphenanthrene (POPO) and toluene-2,4-diisocyanate (2,4-TDI). The method can be accomplished through only one step. POPO and 2,4-TDI react with each other for a certain time under a certain condition, products are subjected to filtering, washing and drying processing, and obtained products are white solid. The flame retardant has good compatibility with epoxy resin, can be completely dissolved into an epoxy resin curing system at a certain temperature, can be cured into a whole body with epoxy resin, is small in influence on the mechanical property of a cured material, and can effectively improve the flame retardation of epoxy resin. The flame retardant is simple in technology production condition, high in purity and yield, and simple in post-processing process.

Description

technical field [0001] The invention relates to a chemical flame retardant and a preparation method thereof, in particular to a phosphorus and nitrogen-containing epoxy resin flame retardant and a preparation method thereof. Background technique [0002] Epoxy resin is a kind of thermosetting polymer synthetic material with excellent bonding, anti-corrosion, insulation, formability, high strength and other properties. Due to the above-mentioned excellent properties, epoxy resin is widely used in the manufacture of adhesives, coatings, insulating materials, etc. And it plays a pivotal role in electronic and electrical, aerospace, shipping and many other industrial fields, and its application has almost spread across all industrial fields. However, the biggest disadvantage in the application of epoxy resin is the flammability of epoxy resin, which is also a problem with most polymer materials. Due to its flammability, the application range of epoxy resin has been greatly lim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/5313C08G59/44C07F9/6574
CPCC08K5/5313C07F9/657172C08G59/446
Inventor 梁兵王志国
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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