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Transparent flame-retarding polyester film and preparation method thereof

A flame retardant polyester and film technology, applied in the field of transparent flame retardant polyester film and its production, can solve the problems of melt droplets, not reaching the VTM-0 flame retardant level, and not mentioning the yellowing of the film, and achieve high resistance flammability, reduction of film yellowing, high transparency

Active Publication Date: 2010-02-10
JIANGSU YUXING FILM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] CN1535290A discloses a kind of production method of producing flame-retardant polyester film, mainly adopts the method for copolymerization to introduce phosphorus-containing flame retardant into polyester molecular chain to improve the flame-retardant performance of polyester film, but the polyester film prepared by this invention The thickness range is between 0.017mm-0.075mm, and there is a droplet phenomenon in the test of the UL94 flame retardant grade, which actually does not meet the requirements of the VTM-0 flame retardant grade
[0004] CN1554703A discloses a production method for producing flame retardant polyester film, adopting the method of blending melt grafting to improve the flame retardancy of polyester film, the polyester film prepared by this method cannot all reach the VTM-0 level In addition, the invention does not mention the yellowing of the film after the oven aging test, the brittleness and the retention rate of mechanical properties, nor the transparency of the film, and the maximum thickness is only 0.188mm

Method used

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  • Transparent flame-retarding polyester film and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0018] The preparation method of transparent flame-retardant polyester film of the present invention, by weight ratio,

[0019] (1) Fully mix 100 parts of terephthalic acid and 35 parts of ethylene glycol, then add a mixture of 7.3 parts of structural phosphorus flame retardant and 30 parts of ethylene glycol and 3 parts of trioxide The catalyst of diantimony and 1.5 parts of triphenyl phosphite stabilizer are fully stirred, the reaction temperature is controlled at 100°C, the vacuum degree is controlled at 400pa, and the esterification reaction is carried out after stirring for 1 hour, wherein the phosphorus-based flame retardant is [ 6-oxo(6H-dibenzo-(c,e)(1,2)-oxaphosphorin-6-one)methyl]-butanedioic acid (DDP) or [6-oxo(6H-di Benzo-(c,e)(1,2)-oxaphosphorin-6-one)methyl]-succinic acid derivatives (DDP derivatives), after the esterification reaction, excess ethylene glycol is recovered . The polycondensation reaction was carried out at a reaction temperature of 260° C. and ...

Embodiment 2

[0023] The preparation method of transparent flame-retardant polyester film of the present invention, by weight ratio,

[0024] (1) Fully mix 100 parts of terephthalic acid and 35 parts of ethylene glycol, then add a mixture of 7.3 parts of structural phosphorus flame retardant and 30 parts of ethylene glycol and 4 parts of ethylene glycol The antimony alcohol catalyst and 3 parts of triphenyl phosphate stabilizer are fully stirred, the reaction temperature is controlled at 115°C, the vacuum degree is controlled at 600pa, and the esterification reaction is carried out after stirring for 0.75h, wherein the phosphorus-based flame retardant is 2 -Carboxyethylphenylphosphinic acid (CEPPA) or phenyldicarboxyphenylphosphine oxide (BCPPO), after the esterification reaction, excess ethylene glycol is recovered. The polycondensation reaction was carried out at a reaction temperature of 290° C. and a vacuum of 10 Pa for 3 hours to obtain copolymerized flame-retardant polyester chips.

...

Embodiment 3

[0028] The preparation method of transparent flame-retardant polyester film of the present invention, by weight ratio,

[0029] (1) Fully mix 100 parts of terephthalic acid and 35 parts of ethylene glycol, then add a mixture of 10.5 parts of structural phosphorus flame retardant and 30 parts of ethylene glycol and 3.5 parts of trioxide The catalyst of diantimony and 2 parts of trimethyl phosphate stabilizer are fully stirred, the reaction temperature is controlled at 110°C, the vacuum degree is controlled at 500pa, and the esterification reaction is carried out after stirring for 1 hour, wherein the phosphorus-based flame retardant is [6 -Oxy(6H-dibenzo-(c,e)(1,2)-oxaphosphorin-6-one)methyl]-butanedioic acid (DDP) and [6-Oxy(6H-diphenyl And-(c,e)(1,2)-oxaphosphorin-6-one)methyl]-succinic acid derivatives (DDP derivatives) mixtures, in which [6-oxo(6H-diphenyl And-(c,e)(1,2)-oxaphosphorin-6-one)methyl]-butanedioic acid (DDP) is 4.38 parts, 6-oxo(6H-dibenzo-(c, e) 2.92 parts o...

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Abstract

The invention relates to a preparation method of a transparent flame-retarding polyester film, comprising the following steps: mixing 100 parts of terephthalic acid and 35 parts of glycol; adding mixed liquid of 7.3-11.6 parts of structural phosphorus flame retardant and 30 parts of glycol, 3-4 parts of catalyst and 1.5-3 parts of stabilizing agent; carrying out esterification reaction for 0.5-1hat 100-115 DEG C under 400-600 pa; carrying out condensation polymerization for 2-3h at 260-290 DEG C under 10-70 pa to obtain a copolymerization lame-retarding polyester slice; after 35-50 percent ofcopolymerization lame-retarding polyester slice is crushed, mixing, extruding and granulating the copolymerization lame-retarding polyester slice and 2.6-6.3 parts of addition type flame retardant toprepare a blending lame-retarding polyester slice; after the residual copolymerization lame-retarding polyester slice and the blending lame-retarding polyester slice are crushed, adding 0.04-0.085 part of antiblocking agent, mixing and then transmitting into an extruder in a mixing mode; and preparing a film with a thickness with 50-300 micron by casting pieces, stretching in a bidirectional mode, thermally forming and rolling.

Description

technical field [0001] The invention relates to a transparent flame-retardant polyester film and a production method thereof, belonging to the technical field of flame-retardant film manufacture. Background technique [0002] Biaxially oriented polyester film is widely used in electronics, electrical insulation, solar photovoltaic and other industrial fields due to its excellent physical properties and electrical insulation properties. With the continuous strengthening of people's awareness of safety, especially higher requirements for flame retardancy, it is necessary to endow biaxially oriented polyester films with higher levels of flame retardancy through appropriate methods, and improve people's production and living standards. important meaning. At the same time, highly transparent flame-retardant polyester film can completely replace polycarbonate film, greatly reducing production costs. [0003] CN1535290A discloses a kind of production method of producing flame-ret...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08G63/692C08K13/02C08K5/03C08L63/00C08L25/18
Inventor 刘勤学周波刘文虎周涵俊
Owner JIANGSU YUXING FILM TECH
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