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

A flame-retardant polyester and bio-based technology, applied in the field of polymers, can solve problems such as insufficient heat resistance and unsatisfactory flame-retardant performance

Active Publication Date: 2020-10-23
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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  • Bio-based heat-resistant flame-retardant polyester, polyester product, preparation method and application thereof
  • Bio-based heat-resistant flame-retardant polyester, polyester product, preparation method and application thereof
  • Bio-based heat-resistant flame-retardant polyester, polyester product, preparation method and application thereof

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preparation example Construction

[0049] In some embodiments, the preparation method includes: reacting the first mixed reaction system at 160-260°C for 1-10 hours to obtain an intermediate product.

[0050] In some embodiments, the preparation method includes: making the first mixed reaction system react in a vacuum environment at 200-300°C for 1-10 hours to obtain a bio-based heat-resistant and flame-retardant polyester, and the vacuum of the vacuum environment The degree is below 300Pa.

[0051] In some embodiments, the preparation method specifically includes: reacting the first dibasic alcohol, dibasic acid or its esterified product, the second dibasic alcohol and an esterification or transesterification catalyst at 160-260°C for 1-10 hours, and then Adding a polycondensation catalyst and a stabilizer, reacting for 1-10 hours in an environment with a temperature of 200-300° C. and a vacuum degree below 300 Pa, to obtain a bio-based heat-resistant and flame-retardant polyester.

[0052] In some embodiment...

Embodiment 1

[0094] Example 1 Add terephthalic acid, phosphorus-containing aromatic dihydric alcohol, and ethylene glycol into the reactor in a molar ratio of 1:0.15:2.1, then add anhydrous manganese acetate with a molar mass of terephthalic acid of 0.8‰, and heat up To 240°C, react for 5.0h, then add antimony trioxide with a molar mass of terephthalic acid of 0.4‰, triphenyl phosphate with a molar mass of terephthalic acid of 0.5‰, vacuum 30Pa, heat up to 280°C, and react for 4.0h , to obtain polyethylene terephthalate phosphorus-containing aromatic diol copolyester, the copolyester structure is shown in formula V, 1 H-NMR such as figure 1 Shown; the glass transition temperature is 97°C, and the DSC spectrum is as follows figure 2 Shown; T in nitrogen 5% The thermal weight loss temperature is 410°C, and the TGA spectrum is as follows image 3 Shown, flame retardant performance test V1 level.

[0095]

[0096] Formula V (m, n is an integer of 1-20; y is an integer of 10-200)

Embodiment 2

[0097] Example 2 Add terephthalic acid, phosphorus-containing aromatic dihydric alcohol, and ethylene glycol into the reactor in a molar ratio of 1:0.06:2.1, then add anhydrous manganese acetate with a terephthalic acid molar mass of 1.0‰, and heat up To 240°C, react for 4.0h, then add antimony trioxide with a molar mass of terephthalic acid of 0.5‰, triphenyl phosphate with a molar mass of terephthalic acid of 0.6‰, vacuum degree 50Pa, heat up to 278°C, and react for 4.0h , to obtain polyethylene terephthalate copolyester containing aromatic diol phosphorus, glass transition temperature 87 ℃, flame retardant performance test level V1.

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Abstract

The invention discloses a bio-based heat-resistant flame-retardant polyester, a polyester product, a preparation method and application thereof. The bio-based heat-resistant flame-retardant polyesterhas a structure shown as the formula in the specification, wherein m and n are integers from 1-20, x is an integer of 20-200, R1 is a residue of binary acid with a carbon atom number of 3-20, and R2 is a residue of dihydric alcohol with a carbon atom number of 2-20. The preparation method comprises the following step of: copolymerizing phosphorus-containing aromatic dihydric alcohol synthesized from vanillin and guaiacol derived from bio-based lignin with other dibasic acids and dihydric alcohols to obtain the bio-based heat-resistant flame-retardant copolyester. The bio-based heat-resistant flame-retardant polyester has excellent heat resistance and flame retardance, can effectively solve the problems of insufficient heat resistance and flame retardance and the like of the existing polyester, and has very wide application in the fields of fire-fighting equipment, baby feeding bottles, water cups, kitchen electrical products, food packaging, optics, decorative materials, automobile manufacturing and the like.

Description

technical field [0001] The invention relates to a polyester material, in particular to a bio-based 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 existing...

Claims

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Application Information

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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 刘小青王静刚江艳华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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