A kind of preparation method of polyester material, polyester film and preparation method thereof

A polyester material and polyester film technology, applied in chemical instruments and methods, electrical components, circuits, etc., can solve the problems of low flame retardant performance of polyester film, cannot solve the problem of polyester film resistance to humidity and heat, and achieve high resistance Moisture and heat resistance of fuel, excellent physical and mechanical properties and electrical insulation properties, good synergistic effect

Active Publication Date: 2015-10-07
浙江南洋科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Chinese patent (authorized announcement number: CN101967272A) discloses a preparation method of polyester film for solar backplane film. The polyester film obtained by this method improves the moisture and heat resistance of the polyester film to a certain extent, but it cannot Solve the effect of adding flame retardants (phosphorus or other flame retardants) on the heat and humidity resistance of polyester films, which shows that the polyester film still cannot solve the problem of achieving high flame retardancy and high heat and humidity resistance at the same time
And the polyester film that this method obtains can only reach UL94VTM-2 grade aspect flame retardancy, and the flame retardancy of this polyester film is relatively low

Method used

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  • A kind of preparation method of polyester material, polyester film and preparation method thereof
  • A kind of preparation method of polyester material, polyester film and preparation method thereof
  • A kind of preparation method of polyester material, polyester film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The purified terephthalic acid of 1000 mass parts and the dibasic alcohol of 400 mass parts are joined in the pulping tank, and described dibasic alcohol is preferably ethylene glycol, then, add 0.05 mass parts of esterification in the reaction tank Catalyst sodium acetate, 0.5 parts by mass of polycondensation catalyst antimony trioxide and 0.05 parts by mass of stabilizer trimethyl phosphate, start the mixer, beat for 30 minutes at a speed of 50 to 100 rpm, and then heat up to 245 ° C ~ Carry out the esterification reaction at 250°C for 2.5 to 3.0 hours. When the water output of the esterification reaction reaches more than 95% of the theoretical water output, the esterification reaction ends and the slurry after the esterification reaction is obtained;

[0042] After the esterification reaction is completed, transfer the esterified slurry to the polycondensation reactor, continue to raise the temperature of the esterified slurry to 278°C to 280°C, and control the vacu...

Embodiment 2

[0044] The purified terephthalic acid of 500 mass parts and the ethylene glycol of 200 mass parts are joined in the pulping tank, then, in reaction tank, add the esterification catalyst magnesium acetate of 0.03 mass part, the polycondensation catalyst B of 0.1 mass part Diol antimony and 0.1 parts by mass of stabilizer triphenyl phosphate, then start the mixer, beating at a speed of 50-100 rpm for 20 minutes, then heating and then raising the temperature to 255°C-260°C for esterification reaction 3.5-4 hour, when the water yield of the esterification reaction reached more than 95% of the theoretical water yield, the esterification reaction ended, and the slurry was obtained after the esterification reaction;

[0045] After the esterification reaction is completed, transfer the esterified slurry to the polycondensation reactor, continue to raise the temperature of the esterified slurry to 270°C-275°C, and control the vacuum at 15-20KPa to carry out the pre-condensation reaction...

Embodiment 3

[0047] The purified terephthalic acid of 800 mass parts and the ethylene glycol of 310 mass parts are joined in the pulping tank, then, in reaction tank, add the esterification catalyst cobalt acetate of 0.01 mass part, the polycondensation catalyst B of 0.2 mass part A mixture of antimony glycol and antimony trioxide and 0.1 parts by mass of phosphoric acid as a stabilizer, then start the mixer, beat at a speed of 50-100 rpm for 20 minutes, then heat and then raise the temperature to 250°C-255°C for esterification React for 3.0 to 3.5 hours, when the water output of the esterification reaction reaches more than 95% of the theoretical water output, the esterification reaction ends, and the slurry after the esterification reaction is obtained;

[0048] After the esterification reaction, transfer the esterified slurry to the polycondensation reactor, continue to raise the temperature of the esterified slurry to 275°C to 278°C, and control the vacuum at 12KPa to 15KPa to carry out...

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Abstract

The invention relates to a preparation method of a polyether material, a polyether film and a preparation method thereof, belonging to the technical field of a polyether film for a backboard film of a solar battery. In order to solve the problem of bad flame retardance and humidity resistance of the existing polyether film, the invention provides a polyether film which comprises a surface layer I, a core layer and a surface layer II, wherein the core layer comprises a polyether chip and a master batch polyether chip, and the core layer also comprises a modified highly humidity-resistant flame-retardant polyether material which is prepared by the following steps: in the presence of a catalyst, performing an esterification reaction between pure terephthalic acid and dihydric alcohol; after the reaction, performing a pre-condensation polymerization reaction; when the intrinsic viscosity reaches 0.20-0.30g / dl, adding a reaction type phosphorus-based flame retardant, increasing the vacuum degree, and performing a condensation polymerization reaction; when the intrinsic viscosity reaches 0.50-0.65g / dl, adding a chain extender ADR and an anti-hydrolysis agent aromatic polycarbodiimide for a copolymerization reaction. Meanwhile, the polyether film has the advantages of high flame retardance and high humidity resistance.

Description

technical field [0001] The invention relates to a preparation method of a polyester material, a polyester film and a preparation method thereof, and belongs to the technical field of the polyester film used for solar battery backplane films. Background technique [0002] At present, composite solar cell backsheet films at home and abroad mainly include composite films such as TPT, TPE, KPK and BBF, which are by far the most ideal protective structural materials for crystalline silicon solar cell packaging. However, solar battery backsheet films (TPT, TPE, KPK, BBF composite films, etc.) not only require the properties of "plastic king" fluoroplastics (aging resistance, corrosion resistance, solvent resistance, stain resistance and hydrophobicity, etc.), but also have poly The performance of ester (mechanical, high and low temperature resistance, aging resistance, no cracking, excellent electrical insulation), but also to improve its moisture and heat resistance, water vapor ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L79/00C08G63/692B32B27/06B32B27/36B29C47/06B29C47/92H01L31/049B29C48/08B29C48/92
CPCB29C47/92B29C47/0021B29C2947/92704B29C2947/92895B29C48/92B29C2948/92704B29C48/08B29C2948/92895
Inventor 曾强杨安文狄伟
Owner 浙江南洋科技有限公司
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