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
CN101643574AActive Publication Date: 2010-02-10JIANGSU YUXING FILM TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGSU YUXING FILM TECH
Publication Date
2010-02-10

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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.
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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