Phosphorus-containing unsaturated polyester resin special for production of fiber reinforced plastics and preparation method thereof

A polyester resin, unsaturated technology, applied in the field of polyester resin, can solve the problems of poor flame retardant durability, poor thermal stability, harmful effects on human body and environment, etc.

Active Publication Date: 2019-01-25
安徽汇创新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The general flame retardant unsaturated polyester resin refers to the resin that adds flame retardant additives to the resin that has been reacted to achieve the flame retardant effect, but this flame retardant polyester resin has the following problems: poor thermal stability of the material, flame retardant Poor durability, the flame retardant migrates to the surface of the polymer matrix and is extracted during the use of the product, which has harmful effects on the human body and the environment

Method used

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  • Phosphorus-containing unsaturated polyester resin special for production of fiber reinforced plastics and preparation method thereof
  • Phosphorus-containing unsaturated polyester resin special for production of fiber reinforced plastics and preparation method thereof
  • Phosphorus-containing unsaturated polyester resin special for production of fiber reinforced plastics and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0025] A special phosphorus-containing unsaturated polyester resin for the production of glass fiber reinforced plastics. In parts by weight, its raw materials include: 20 parts of maleic acid, 20 parts of isophthalic acid, 40 parts of 1,2-propylene glycol, and 25 parts of phosphorus-containing vinyl monomer 0.02 part of hydroquinone, 1 part of dicumyl peroxide;

[0026] Wherein, the phosphorus-containing vinyl monomer is prepared by the following method: under nitrogen protection, fumaric acid and 1,4-butanediol with a molar ratio of 1:3 are added to toluene, heated to 100°C and then stirred Reaction 5h, carry out recrystallization with the mixed solution of dichloromethane and methanol after removing solvent, obtain described dibutylene fumarate; In molar parts, dibutylene fumarate 1 2.2 parts of triethylamine were added after cooling in an ice-water bath for 1 hour, and 2.6 parts of diphenyl chlorophosphate was added dropwise with dichloromethane solution under stirring con...

Embodiment 2

[0031] A phosphorus-containing unsaturated polyester resin specially used for the production of glass fiber reinforced plastics. The raw materials include: 30 parts of maleic anhydride, 10 parts of phthalic anhydride, 50 parts of diethylene glycol, phosphorus-containing vinyl mono Body 15 parts, tert-butylcatechol 0.2 parts, dibenzoyl peroxide 0.1 parts;

[0032] Wherein, the phosphorus-containing vinyl monomer is prepared by the following method: under nitrogen protection, fumaric acid and 1,4-butanediol with a molar ratio of 1:5 are added to toluene, heated to 90°C and then stirred Reaction 7h, carry out recrystallization with the mixed solution of dichloromethane and methanol after removing solvent, obtain described dibutylene fumarate; In molar parts, dibutylene fumarate 2 2.5 parts of triethylamine was added after cooling in an ice-water bath for 0.5 h, and 2.2 parts of diphenyl chlorophosphate was added dropwise with dichloromethane solution under stirring conditions, an...

Embodiment 3

[0037] A special phosphorus-containing unsaturated polyester resin for the production of glass fiber reinforced plastics. The raw materials include: 25 parts of fumaric acid, 3 parts of phthalic acid, 6 parts of tetrahydrophthalic acid, and hexahydrophthalic acid in parts by weight. 6 parts, 15 parts of ethylene glycol, 30 parts of dipropylene glycol, 20 parts of phosphorus-containing vinyl monomers, 0.05 parts of p-benzoquinone, 0.05 parts of p-hydroxyanisole, 1,1-di(tert-butyl peroxy ) 0.5 part of cyclohexane;

[0038]Wherein, the phosphorus-containing vinyl monomer is prepared by the following method: under nitrogen protection, fumaric acid and 1,4-butanediol with a molar ratio of 1:4 are added to toluene, heated to 95°C and then stirred Reaction 6h, carry out recrystallization with the mixed solution of dichloromethane and methanol after removing solvent, obtain described dibutylene fumarate; In molar parts, dibutylene fumarate 1.5 2.3 parts of triethylamine was added aft...

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Abstract

The invention discloses phosphorus-containing unsaturated polyester resin special for production of fiber reinforced plastics. The unsaturated polyester resin is prepared from the following componentsin parts by weight: 20-30 parts of unsaturated binary acid or anhydride, 10-20 parts of saturated binary acid or anhydride, 40-50 parts of dihydric alcohol, 15-25 parts of phosphorus-containing vinylmonomer, 0.02-0.2 part of a polymerization inhibitor and 0.1-1 part of an initiator. The phosphorus-containing unsaturated polyester resin special for production of the fiber reinforced plastics hasthe advantages that an additive flame retardant is prevented from being added into the obtained phosphorus-containing unsaturated polyester resin, and meanwhile, the flame retardancy can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of polyester resins, in particular to a phosphorus-containing unsaturated polyester resin specially used for the production of glass fiber reinforced plastics and a preparation method thereof. Background technique [0002] Unsaturated polyester FRP material generally refers to a chemical composite material obtained by reinforcing unsaturated polyester resin with glass fibers. Unsaturated polyester resin products reinforced with glass fibers not only have excellent chemical corrosion resistance, but also have good mechanical properties after curing, and the specific gravity is relatively small. However, traditional unsaturated polyester resins are easy to burn. When the index LOI value is lower than 21, a large amount of harmful smoke will be produced when burning. When applied to the matrix material of FRP, in many important occasions, such as flame retardant FRP equipment, etc., flame retardant unsaturated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/692C08G63/78
CPCC08G63/6928C08G63/78
Inventor 周飞任旭明汤明明
Owner 安徽汇创新材料有限公司
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