Low-floating-fiber high-flame-retardancy PBT (polybutylene terephthalate) material and preparation method thereof

A high flame-retardant, low-floating fiber technology, applied in the field of polymer modification, can solve the problems of insufficient flame retardancy of PBT, easy to drip when burning, and many floating fibers, and achieve excellent flame-retardant effect, low cost, and bulk density Improved effect

Inactive Publication Date: 2016-11-09
太仓市华鼎塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent solves the floating fiber phenomenon, but this patent is a halogenated flame retardant reinforced PBT material
[0006] In view of the above, solve the phenomenon that the flame retardancy of halogen-free flame-retardant PBT in the market is not enough, it is easy to drip when burning, and there are many floating fibers in the appearance of the product, so that the appearance, performance and flame retardancy of the product can be balanced, and solve the problem in the market. Ubiquitous application problems of similar products

Method used

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  • Low-floating-fiber high-flame-retardancy PBT (polybutylene terephthalate) material and preparation method thereof
  • Low-floating-fiber high-flame-retardancy PBT (polybutylene terephthalate) material and preparation method thereof
  • Low-floating-fiber high-flame-retardancy PBT (polybutylene terephthalate) material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] A low floating fiber high flame retardant PBT material, comprising the following raw materials in weight ratio:

[0032] PBT resin: 52 parts, flame retardant A: 12 parts, flame retardant B: 5 parts, flame retardant C: 0.2 parts, glass fiber: 27 parts, toughening agent: 4 parts, coupling agent: 0.22 parts, Anti-glass fiber exposure agent: 0.75 parts, lubricant: 0.35 parts, antioxidant: 0.26 parts.

[0033] Further, the viscosity of the PBT resin is 0.95. A low-floating fiber and high flame-retardant PBT material provided by the present invention, in order to make the glass fiber well dispersed and reduce the floating fiber, the PBT raw material selects a medium-low viscosity with an intrinsic viscosity of 0.95 PBT resin, to ensure that the material has sufficient fluidity. This resin has a low concentration of terminal carboxyl groups and low water content, making the material less prone to hygrothermal degradation during processing, while ensuring the mechanical properti...

Embodiment 2

[0053] A low floating fiber high flame retardant PBT material, comprising the following raw materials in weight ratio:

[0054] PBT resin: 50 parts, flame retardant A: 13 parts, flame retardant B: 5 parts, flame retardant C: 0.2 parts, glass fiber: 27 parts, toughening agent: 5 parts, coupling agent: 0.1 parts, Anti-glass fiber exposure agent: 1 part, lubricant: 0.5 part, antioxidant: 0.1 part.

[0055] Further, the viscosity of the PBT resin is 0.86. In the low-floating fiber and high flame-retardant PBT material provided by the present invention, in order to make the glass fiber well dispersed and reduce the floating fiber, the PBT raw material selects a medium-low viscosity PBT with an intrinsic viscosity of 0.86. Resin, to ensure that the material has sufficient fluidity. This resin has a low concentration of terminal carboxyl groups and low water content, making the material less prone to hygrothermal degradation during processing, while ensuring the mechanical propertie...

Embodiment 3

[0075] A low floating fiber high flame retardant PBT material, comprising the following raw materials in weight ratio:

[0076] PBT resin: 45 parts, flame retardant A: 13 parts, flame retardant B: 6 parts, flame retardant C: 0.3 parts, glass fiber: 30 parts, toughening agent: 6 parts, coupling agent: 0.3 parts, Anti-glass fiber exposure agent: 0.5 parts, lubricant: 0.2 parts, antioxidant: 0.5 parts.

[0077] Further, the viscosity of the PBT resin is 1.05. In the low-floating fiber and high flame-retardant PBT material provided by the present invention, in order to make the glass fiber well dispersed and reduce the floating fiber, the PBT raw material selects a medium-low viscosity PBT with an intrinsic viscosity of 1.05. Resin, to ensure that the material has sufficient fluidity. This resin has a low concentration of terminal carboxyl groups and low water content, making the material less prone to hygrothermal degradation during processing, while ensuring the mechanical prop...

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Abstract

The invention provides a low-floating-fiber high-flame-retardancy PBT (polybutylene terephthalate) material which is characterized by comprising the following raw materials in parts by weight: 40-60 parts of PBT resin, 10-20 parts of flame retardant A, 5-10 parts of flame retardant B, 0.1-0.3 part of flame retardant C, 20-30 parts of glass fiber, 3-10 parts of toughener, 0.1-0.3 part of coupling agent, 0.5-1 part of anti-glass fiber exposure agent, 0.2-0.5 part of lubricant and 0.1-0.5 part of antioxidant. The invention also provides a preparation method of the low-floating-fiber high-flame-retardancy PBT material. The low-floating-fiber high-flame-retardancy PBT material has the characteristics of low floating fibers, high flame retardancy and no halogenation. In addition, the low-floating-fiber high-flame-retardancy PBT material has the advantages of lower cost and higher cost performance. The production technique is simple in process and easy to implement, can not cause environmental pollution, and has low hazards to human health.

Description

technical field [0001] The invention relates to the technical field of polymer modification, in particular to a low-fiber high-flame-retardant PBT material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT for short), belonging to the polyester series, is composed of 1.4-pbt butanediol (1.4-Butylene glycol) and terephthalic acid (PTA) or terephthalate (DMT) ) polycondensation, and a milky white translucent to opaque, crystalline thermoplastic polyester resin made through a mixing process. It has excellent processability, mechanical properties, heat aging resistance, solvent resistance and excellent arc resistance, etc. Has been widely used in automobiles, electronic appliances, industrial machinery and polymer alloy, blending industry. [0003] In the application of PBT, most of them must be flame retardant, and the flame retardant system is mainly halogenated flame retardants (such as decabromodiphenylethane, brominated epoxy,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L27/18C08K13/06C08K9/06C08K7/14C08K5/5313C08K5/3492B29C47/92B29C48/92
CPCC08L67/02B29C48/92B29C2948/9258B29C2948/92704C08K2201/003C08L2201/02C08L2201/22C08L2205/035C08L27/18C08K13/06C08K9/06C08K7/14C08K5/5313C08K5/34928
Inventor 仇峰涛
Owner 太仓市华鼎塑料有限公司
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