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Flame-retardant copolyester material for automobile interior trim, and preparation method of flame-retardant copolyester material

A technology of automotive interior and copolyester, which is applied in the field of flame retardant copolyester materials and preparation, can solve the problems of casualty economy, melt dripping, environmental pollution, etc., and achieve improved rigidity, glass transition temperature, oxygen The effect of high index

Active Publication Date: 2019-03-15
银金达(上海)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] As people have higher and higher requirements for the safety performance of automobiles, the limiting oxygen index of polyester materials is about 22%, which is a flammable product. It burns quickly, releases a large amount of heat and harmful gases, and melts and drips. , pollute the environment, cause casualties and very serious economic losses, therefore, higher requirements are put forward for the flame retardancy of polyester materials

Method used

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  • Flame-retardant copolyester material for automobile interior trim, and preparation method of flame-retardant copolyester material
  • Flame-retardant copolyester material for automobile interior trim, and preparation method of flame-retardant copolyester material
  • Flame-retardant copolyester material for automobile interior trim, and preparation method of flame-retardant copolyester material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Heat and melt dimethyl terephthalate, then add ethylene glycol, stir evenly, add stannous octoate and titanium chloride, heat up to 228°C, react for 34 minutes, then vacuumize and continue the reaction for 48 minutes to obtain Ethylene terephthalate prepolymer; the molar ratio of dimethyl terephthalate, ethylene glycol, stannous octoate, and titanium chloride is 100:100:0.7:1.6;

[0026] (2) Add hydroquinone into toluene solvent, then add phenylphosphonyl dichloride dropwise, heat to 88°C for 17h under the protection of nitrogen, then cool down to 67°C for 4h, then filter, wash, and vacuum-dry to prepare Bis(4-hydroxyphenyl)phenylphosphine oxide is obtained; the molar ratio of hydroquinone and phenylphosphonic dichloride is 2.26:1;

[0027] (3) Add bis(4-methylphenyl)phenylphosphine oxide to sodium hydroxide solution, adjust the pH value to 11.5, add potassium permanganate, heat to 93°C for 10.5h oxidation, then cool down to room temperature, and add hydrochloric ac...

Embodiment 2

[0030] (1) Heat and melt dimethyl terephthalate, then add ethylene glycol, stir evenly, add stannous octoate and titanium chloride, heat up to 224°C, react for 38 minutes, then vacuumize and continue the reaction for 45 minutes to obtain Ethylene terephthalate prepolymer; the molar ratio of dimethyl terephthalate, ethylene glycol, stannous octoate, and titanium chloride is 100:100:0.6:1.2;

[0031] (2) Add hydroquinone into toluene solvent, then add phenylphosphonyl dichloride dropwise, heat to 85°C for 19h under nitrogen protection, then cool down to 66°C for 4.5h, then filter, wash, and vacuum dry. Bis(4-hydroxyphenyl)phenylphosphine oxide was prepared; the molar ratio of hydroquinone and phenylphosphonic dichloride was 2.22:1;

[0032] (3) Add bis(4-methylphenyl)phenylphosphine oxide to sodium hydroxide solution, adjust the pH value to 11, add potassium permanganate, heat to 91°C for 11.5h, then cool down to room temperature, and add hydrochloric acid Until the solution is...

Embodiment 3

[0035] (1) Heat and melt dimethyl terephthalate, then add ethylene glycol, stir evenly, add stannous octoate and titanium chloride, heat up to 235°C, react for 33 minutes, then vacuumize and continue the reaction for 55 minutes to obtain Ethylene terephthalate prepolymer; the molar ratio of dimethyl terephthalate, ethylene glycol, stannous octoate, and titanium chloride is 100:100:0.9:1.8;

[0036](2) Add hydroquinone into toluene solvent, then add phenylphosphonyl dichloride dropwise, heat to 95°C for 16h under nitrogen protection, then cool down to 68°C for 3.5h, then filter, wash, and vacuum dry. Bis(4-hydroxyphenyl)phenylphosphine oxide was prepared; the molar ratio of hydroquinone and phenylphosphonyl dichloride was 2.28:1;

[0037] (3) Add bis(4-methylphenyl)phenylphosphine oxide to sodium hydroxide solution, adjust the pH value to 12, add potassium permanganate, heat to 95°C for 10.5h, then cool down to room temperature, and add hydrochloric acid Until the solution is ...

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Abstract

The invention relates to the technical field of flame-retardant automobile interior trim materials, and provides a flame-retardant copolyester material for automobile interior trim, and a preparationmethod of the flame-retardant copolyester material. The method is characterized in that phosphorous flame retardants with rigid chains, namely bis(4-hydroxyphenyl)phenylphosphine oxide and bis(4-carboxyphenyl)phenylphosphine oxide, are prepared as flame-retardant monomers to copolymerize with an ethylene terephthalate prepolymer, terephthalic acid andethylene glycol, and thus the flame-retardant copolyester material is prepared. The prepared flame-retardant copolyester material provided by the invention has a good and lasting flame-retardant effect; and compared with a pure polyethylene terephthalate material, the glass transition temperature is increased, so that the flame-retardant copolyester material is suitable for being used as an automobile interior trim material.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant automobile interior materials, and provides a flame-retardant copolyester material used for automobile interior decoration and a preparation method. Background technique [0002] Polyester material has the advantages of high strength, high modulus, high elasticity, good heat resistance, etc. It is currently the world's highest output, largest consumption, and most widely used polymer synthetic material. Due to the excellent comprehensive properties of polyester materials, it is not only widely used in the fields of electronics, home appliances, etc., but also in the field of automobiles, which has attracted more and more attention. [0003] As people have higher and higher requirements for the safety performance of automobiles, the limiting oxygen index of polyester materials is about 22%, which is a flammable product. It burns quickly, releases a large amount of heat and harmful gases, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/692C08G63/78
CPCC08G63/6926C08G63/78
Inventor 蔡杰
Owner 银金达(上海)新材料有限公司
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