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Flame retardant polyester film

A technology of polyester film and polyethylene terephthalate, applied in the field of flame-retardant polyester film, can solve the problems of easy precipitation of antimony metal, formation of foreign matter, and affecting the quality of polyester film

Inactive Publication Date: 2010-07-07
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after using antimony compounds, antimony metal will be easily precipitated during the film-making process to form foreign matter, which will affect the quality of the polyester film.

Method used

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  • Flame retardant polyester film
  • Flame retardant polyester film
  • Flame retardant polyester film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Direct transesterification was carried out at a temperature of 220°C with 194 parts by weight of dimethyl terephthalate, 120 parts by weight of ethylene glycol and 0.1 wt% of anti-dripping agent TMTM. The obtained reaction product is placed in a polymerization flask equipped with a rectification tower, and a catalyst and a copolymerized flame retardant FR are added. The catalyst is: titanium compound, magnesium compound, phosphorus compound, phosphate compound, and the phosphorus compound stabilizer (PW9225) The addition amount of phosphorus P element is 40ppm, the addition amount of magnesium acetate compound (MGA) is Mg element 40ppm; the addition amount of titanium element in titanium compound (AC420) is 5ppm, and the addition amount of phosphorus element in sodium dihydrogen phosphate is 10ppm; The amount of phosphorus added in the type flame retardant FR is 9000ppm (the above added amounts are relative to the weight of polyethylene terephthalate). Under normal pres...

Embodiment 2

[0046] The experimental conditions are the same as those in Example 1, and the amount of phosphorus added to the anti-dripping agent sodium dihydrogen phosphate is 30 ppm.

Embodiment 3

[0048] The experimental conditions are the same as in Example 1, and the amount of the anti-dripping agent TMTM is 0.3wt%.

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Abstract

The present invention discloses a flame retardant polyester film. The polyester film is prepared by taking polyethylene terephthalate made by the ester exchange reaction and condensation polymerization reaction of terephthalic acid and glycol as raw materials. Anti-dripping additives are added during ester exchange, and phosphorus flame retardant is added in condensation polymerization reaction. The intensity preservation rate of the polyester film prepared is from 70% to 90% after the polyester film is used under the conditions of 140 DEG C and 80% relative humidity (RH) for 20 hours. The flame retardant grade of the polyester film reaches UL94VTM-0. The flame retardant polyester film prepared is free of halogen, resists dripping and has good flame retardant properties. Besides, condensation polymerization catalyst does not comprise antimony metal, so the polyester film is an environmental protection type flame retardant film material.

Description

technical field [0001] The invention relates to a flame-retardant polyester film. Background technique [0002] Polyester film is a kind of film made of polyethylene terephthalate (PET) after biaxial stretching process. It has high strength, high transparency, non-toxic and other good characteristics. Since polyester (PET) itself does not have flame retardant properties, its application in electrical insulation materials, motors and other fields is limited. [0003] In the prior art, there are mainly two methods for preparing flame-retardant polyester films: one is to use copolymerized flame retardants to copolymerize with terephthalic acid and ethylene glycol to obtain flame-retardant masterbatches, and then to draw The other is to use a blended flame retardant to blend with polyester chips, extrude to make a flame retardant masterbatch, and then pull the film. These two methods are relatively popular methods for current research on flame-retardant polyester films. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K5/101C08G63/183C08J5/18
Inventor 邹美华祁华梁婷青山雅俊
Owner TORAY FIBER RES INST(CHINA) CO LTD