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Special flame-retardant masterbatch for low carrier PBT and preparation method thereof

A technology of flame retardant masterbatch and PBT resin, which is applied in the field of low-carrier PBT flame retardant masterbatch and its preparation, and can solve the problems of poor fluidity and mechanical properties

Active Publication Date: 2019-06-21
JIANGYIN LONGSHAN SYNTHETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Conventional flame retardant masterbatches are composed of decabromodiphenylethane and antimony trioxide in brominated flame retardants. The proportion of masterbatches in PBT finished products is 12%~20%, and it will not target a certain In-depth research and development of this material, the proportion of decabromodiphenylethane is 8~10%, the more flame retardants added, the better the flame retardant effect, but it will make the fluidity and mechanical properties of the material worse, so it is necessary to Environmentally friendly flame retardant masterbatches with high flame retardant properties and high material flow and high mechanical properties are the development trend of flame retardant masterbatches in the future

Method used

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  • Special flame-retardant masterbatch for low carrier PBT and preparation method thereof
  • Special flame-retardant masterbatch for low carrier PBT and preparation method thereof

Examples

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Effect test

Embodiment 1-6

[0039] The PBT finished product of a kind of low-carrier PBT flame-retardant masterbatch of embodiment 1-6.

[0040] project Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 PBT resin powder 6% 7% 8% 9% 9% 9% brominated polystyrene 66% 63% 60% 57% 56% 55% Antimony Phosphate 5% 5% 5% 5% 5% 5% Phosphorus nitrogen flame retardant 21% 23% 25% 27% 28% 29% PETS-T 1% 1% 1% 1% 1% 1% Esterified E Wax 1% 1% 1% 1% 1% 1%

[0041] In Examples 1-6, the PBT intrinsic viscosity of the PBT resin is 0.8 dl / g, and the mesh number after crushing reaches 1200 mesh; the bromine content in brominated polystyrene is ≥66%, and the temperature resistance reaches 210°C; The flame retardant is made of OP series halogen-free flame retardant materials, the phosphorus content is >25%, the degradation temperature is >300°C, and the particle size distribution is ≤100µm. , the dispersant uses PETS-T, the highe...

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Abstract

The invention discloses a special flame-retardant masterbatch for low carrier PBT and a preparation method thereof. A novel flame-retardant formula system is adopted, deep research and development iscarried out on PBT high-performance flame-retardant masterbatch, and the special flame-retardant masterbatch with low carrier, high GWIT and high CTI for PBT is researched and developed. Brominated polystyrene is taken as a main material, a phosphorus and nitrogen system flame retardant, antimony phosphate, pretreated PBT powder and a dispersing agent are added for preparation, wherein the dispersing agent consists of a lubricating agent PETS-T and esterified E wax, low-temperature liquid nitrogen grinding fabrication processing is carried out on PBT, the fusion with the component of the flame-retardant is more thorough, PBT powder is taken as the compound of the flame-retardant masterbatch, the special flame-retardant masterbatch for PBT can be rapidly fused with subsequent PBT resin, andan excellent flame-retardant effect is reached.

Description

technical field [0001] The invention relates to the technical field of flame-retardant masterbatches for polymer material PBT, in particular to a special flame-retardant masterbatch for low-carrier PBT and a preparation method thereof. Background technique [0002] Polybutylene terephthalate, the English name polybutylene terephthalate (referred to as PBT), belongs to the polyester series, which is composed of 1.4-pbt butanediol (1.4-Butylene glycol) and terephthalic acid (PTA) or terephthalic acid It is a translucent to opaque, milky white translucent to opaque, crystalline thermoplastic polyester resin formed by polycondensation of formate (DMT) and produced through a kneading process. Environmentally friendly flame retardant masterbatches are mainly based on decabromodiphenylethane or brominated epoxy resin masterbatches, which have good carrier, good dispersion, high bromine content, good thermal stability, and good UV resistance, compared with other Brominated flame re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L25/06C08K3/32C08J3/22
Inventor 赵峻雷陈凯赵嵩虞晓洋
Owner JIANGYIN LONGSHAN SYNTHETIC MATERIAL
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