Low-temperature-resistant hydrolysis-resistant glass fiber reinforced PBT and preparation method thereof

A hydrolysis-resistant and low-temperature-resistant technology, which is applied in the field of polymer materials to achieve excellent mechanical properties, improved strength, and excellent overall flame retardancy

Active Publication Date: 2021-02-05
浙江语川新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the above-mentioned glass fiber reinforced PBT composite material, it has excellent performance in many aspects, but the low temperature resistance and hydrolysis resistance of the material still need to be further improved

Method used

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  • Low-temperature-resistant hydrolysis-resistant glass fiber reinforced PBT and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A low-temperature-resistant and hydrolysis-resistant glass fiber-reinforced PBT, comprising the following raw materials in parts by weight: 100 parts of polybutylene terephthalate PBT, 15 parts of zinc oxide modified glass fiber, 1.1 parts of iron-doped nano-titanium dioxide, nano-moisture 3 parts of soil removal, 0.4 parts of vinyltriacetoxysilane, 5.5 parts of toughening agent SWR-6B, 0.5 parts of antioxidant 1010.

[0029] The above polybutylene terephthalate PBT had a viscosity of 1.0 dL / g. The particle diameter of the iron-doped nano-titanium dioxide is 30-80nm, and the doping amount is 1.5%. The particle size of nano-montmorillonite is 20-100nm.

[0030] Zinc oxide modified glass fiber is prepared by the following method:

[0031] (1) Dissolve 1 part of zinc acetate in 50 parts of ethylene glycol, stir for 25 minutes, add 3 parts of chopped glass fiber, and then ultrasonically disperse for 50 minutes;

[0032] Chopped glass fibers have a length of 0.5-5 mm and ...

Embodiment 2

[0036] A low-temperature-resistant and hydrolysis-resistant glass fiber-reinforced PBT, comprising the following raw materials in parts by weight: 100 parts of polybutylene terephthalate PBT, 16 parts of zinc oxide modified glass fiber, 0.8 parts of iron-doped nano-titanium dioxide, and nano-moisture 5 parts of soil removal, 0.5 parts of vinyltriacetoxysilane, 3 parts of toughening agent SWR-6B, 0.5 parts of antioxidant 168.

[0037] The above polybutylene terephthalate PBT had a viscosity of 1.0 dL / g. The particle diameter of the iron-doped nano-titanium dioxide is 30-80nm, and the doping amount is 1.5%. The particle size of nano-montmorillonite is 20-100nm.

[0038] Zinc oxide modified glass fiber is prepared by the following method:

[0039] (1) Dissolve 1 part of zinc acetate in 50 parts of ethylene glycol, stir for 30 minutes, add 2-3 parts of chopped glass fiber, and then ultrasonically disperse for 30 minutes;

[0040] Chopped glass fibers have a length of 0.5-5 mm a...

Embodiment 3

[0044] A low-temperature-resistant and hydrolysis-resistant glass fiber-reinforced PBT, comprising the following raw materials in parts by weight: 100 parts of polybutylene terephthalate PBT, 12 parts of zinc oxide modified glass fiber, 0.7 parts of iron-doped nano-titanium dioxide, and nano-moisture 2 parts of soil removal, 0.5 parts of vinyltriacetoxysilane, 5 parts of toughening agent SWR-6B, 0.5 parts of antioxidant 168.

[0045] The above polybutylene terephthalate PBT had a viscosity of 1.0 dL / g. The particle size of the iron-doped nano-titanium dioxide is 30-80nm, and the doping amount is 2%. The particle size of nano-montmorillonite is 20-100nm.

[0046] The preparation method of the zinc oxide modified glass fiber is the same as in Example 1.

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Abstract

The invention provides a low-temperature-resistant hydrolysis-resistant glass fiber reinforced PBT and a preparation method thereof. The low-temperature-resistant hydrolysis-resistant glass fiber reinforced PBT comprises the following raw materials in parts by weight: 100 parts of polybutylene terephthalate PBT, 10-17 parts of zinc oxide modified glass fibers, 0.5-1.3 parts of iron-doped nano titanium dioxide, 2-5 parts of nano montmorillonite, 0.3-0.5 part of vinyltriacetoxysilane, 4.5-6 parts of a toughening agent and 0.3-0.6 part of an antioxidant. The PBT composite material prepared in theinvention has excellent mechanical properties, good low temperature resistance and high temperature resistance, strong hydrolysis resistance and excellent overall flame retardancy.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a low-temperature-resistant and hydrolysis-resistant glass fiber-reinforced PBT and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is formed by polycondensation of terephthalic acid and butanediol at high temperature. The pure PBT resin is milky white particles. It is a crystalline linear saturated polyester resin with high strength. , good fatigue resistance, low water absorption, stable size, small high temperature creep, etc., some application examples in the industry show its irreplaceable superiority in some aspects, and has become the next polyamide, polycarbonate It is the fifth largest general-purpose engineering plastic after ester, polyoxymethylene and modified polyphenylene ether, and has been widely used. [0003] PBT is used as an engineering plastic and is often modified with glass fiber reinforcement. Its com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K13/06C08K9/10C08K7/14C08K3/22C08K3/34C08K5/5425C08J5/08
CPCC08J5/08C08J2367/02C08K2201/011C08K13/06C08K9/10C08K7/14C08K2003/2296C08K2003/2241C08K3/346C08K5/5425
Inventor 王晓峰
Owner 浙江语川新材料科技有限公司
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