Impact-resistant heat-resistant flame-retardant polyester, polyester product, preparation method and application thereof

A flame-retardant polyester and impact-resistant technology, applied in the field of polymers, can solve the problems of unsatisfactory flame-retardant performance and insufficient heat resistance, and achieve increased toughness, good heat resistance and flame retardancy, and improved elongation at break Effect

Active Publication Date: 2020-12-11
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polyester materials have insufficient heat resistance when used in the fields of water cups, kitchen appliances, high-temperature disinfection products, and automobile manufacturing. Very ideal, in order to protect the safety of users, its flame retardant properties need to be further improved

Method used

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  • Impact-resistant heat-resistant flame-retardant polyester, polyester product, preparation method and application thereof
  • Impact-resistant heat-resistant flame-retardant polyester, polyester product, preparation method and application thereof
  • Impact-resistant heat-resistant flame-retardant polyester, polyester product, preparation method and application thereof

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preparation example Construction

[0038] In some embodiments, the preparation method specifically includes: reacting the first glycol, terephthalic acid or its esterified product, the second glycol, and an esterification or transesterification catalyst at 160-260°C for 1-8.0 h, then add a polycondensation catalyst and a stabilizer, and react for 1 to 8.0 hours at a temperature of 200 to 300° C. and a vacuum below 300 Pa to obtain an impact-resistant, heat-resistant, and flame-retardant polyester.

[0039] In the above embodiments of the present invention, the structure of the phosphorus-containing aromatic dihydric alcohol is as formula III:

[0040] .

[0041] Formula III

[0042] The phosphorus-containing aromatic dihydric alcohol can be prepared by reacting phenol, p-hydroxybenzaldehyde and DOPO, followed by further hydroxyethylation.

[0043] In some embodiments, the second glycol includes cyclohexanedimethanol.

[0044] In some embodiments, the molar ratio of the phosphorus-containing aromatic diol t...

Embodiment 1

[0088] Example 1 Add dimethyl terephthalate, phosphorus-containing aromatic diol, 1,4-cyclohexanedimethanol, and ethylene glycol into the reactor in a molar ratio of 1:0.20:0.2:2.1, and then add Anhydrous zinc acetate with a molar weight of 1.0‰ of dimethyl terephthalate, heated to 180°C, reacted for 3.5 hours, then added antimony trioxide with a molar weight of dimethyl terephthalate of 0.6‰, di Phosphorous acid with a molar mass of methyl ester of 0.8‰, vacuum degree of 30Pa, heating up to 285°C, and reacting for 4.0h to obtain polyterephthalic acid phosphorus-containing aromatic glycol ethylene glycol cyclohexanedimethanol copolyester, 1 H-NMR such as figure 1 Shown; DSC spectrum such as figure 2 Shown; the glass transition temperature is 108°C, and the TGA spectrum is as image 3 shown. The flame retardant performance test is V0 level, and the elongation at break of the copolyester is 120%.

Embodiment 2

[0089] Example 2 Add dimethyl terephthalate, phosphorus-containing aromatic diol, 1,4-cyclohexanedimethanol, and ethylene glycol into the reactor in a molar ratio of 1:0.15:0.2:1.05, and then add Anhydrous manganese acetate with a molar weight of 0.6‰ of dimethyl terephthalate, heated up to 160°C, reacted for 8.0 hours, then added antimony trioxide with a molar weight of dimethyl terephthalate of 0.5‰, di Triphenyl phosphate with a molar mass of methyl ester of 0.8‰, vacuum degree of 15Pa, heating up to 285°C, and reacting for 4.0h to obtain polyterephthalic acid phosphorus-containing aromatic glycol ethylene glycol cyclohexanedimethanol copolyester, vitrified The transition temperature is 105°C, the flame retardant performance test is V1 level, and the elongation at break of the copolyester is 160%.

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Abstract

The invention discloses an impact-resistant, heat-resistant and flame-retardant polyester, a polyester product, a preparation method and application thereof. The impact-resistant, heat-resistant and flame-retardant polyester has a structure represented by the following formula: wherein, R is the residue of a diol with 2-20 carbon atoms, x, y, and z are integers of 1-20, and m is 20 An integer of ‑200. The impact-resistant, heat-resistant, and flame-retardant polyester has the characteristics of toughness, heat resistance, and excellent flame-retardant properties, and is widely used in fire-fighting equipment, baby bottles, water cups, kitchen appliances, food packaging, optical fields, decorative materials, and automobile manufacturing. Very wide range of uses.

Description

technical field [0001] The invention relates to a polyester material, in particular to an impact-resistant, heat-resistant and flame-retardant polyester and its preparation method and application, belonging to the technical field of polymers. Background technique [0002] High glass transition temperature (Tg), impact-resistant transparent polymer materials have a very wide range of uses in fire-fighting equipment, baby bottles, water cups, kitchen appliances, food packaging, optical fields, decorative materials, automobile manufacturing and other fields. There are also special applications in the field of lightweight bulletproof glass. [0003] Polyester is a kind of plastic with excellent performance and wide application, which is widely used in bottle, film, fiber and other fields. At present, China's PET output exceeds 40 million tons, and the world's PET output exceeds 70 million tons. It has the characteristics of high transparency and impact resistance. However, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/692C08G63/78C08J5/18C08L67/02B32B33/00B32B27/36B32B27/18B32B27/06B32B7/10
CPCB32B7/10B32B27/06B32B27/18B32B27/36B32B33/00B32B2250/02B32B2307/306B32B2307/3065B32B2437/00C08G63/6926C08G63/78C08J5/18C08J2367/02
Inventor 刘小青费璇江艳华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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