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Thermoplastic resin combination of polypropylene terephthalate and its formed pieces

A technology of polytrimethylene terephthalate and resin composition, which is applied in the invention field of polytrimethylene terephthalate resin composition and molded products thereof, can solve the problems of distortion and deformation of fiber-reinforced resin molded products, and achieves Low distortion, good mechanical properties, small distortion effect

Inactive Publication Date: 2006-04-19
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the deficiencies in the prior art, adopts the polytrimethylene terephthalate resin with unique crystal structure to replace PBT resin, provides a kind of polytrimethylene terephthalate thermoplastic resin composition and its products, from Fundamentally solve the above-mentioned distortion problem of fiber-reinforced resin molded products

Method used

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  • Thermoplastic resin combination of polypropylene terephthalate and its formed pieces
  • Thermoplastic resin combination of polypropylene terephthalate and its formed pieces

Examples

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Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1: poly(trimethylene terephthalate) thermoplastic resin composition, comprising:

[0048] (a) PTT resin, accounting for composition weight ratio is 49.0%;

[0049] (b) Non-crystalline thermoplastic resin component: polycarbonate (PC), accounting for 21.0% by weight of the composition;

[0050] (c) Reinforcing fiber component: glass fiber (GF), fiber diameter 12 μm, length 3 mm, accounting for 30.0% by weight of the composition.

[0051] The above (a) PTT resin is a polymer obtained by direct esterification with terephthalic acid (PTA) and 1,3-propanediol as main components. Under the temperature condition of 30°C, when measured with a mixed solution of dichloromethane and trifluoroacetate at a weight ratio of 1:1, the intrinsic viscosity of the PTT resin is 0.92dl / g.

Embodiment 2

[0054] Embodiment 2: Poly(trimethylene terephthalate) thermoplastic resin composition

[0055] As described in Example 1, the difference is (a) PTT resin, the weight percentage is 41.9%; (b) the non-crystalline thermoplastic resin component is acrylonitrile-styrene copolymer (AS), and the weight percentage is 28.1%.

Embodiment 3

[0056] Embodiment 3: poly(trimethylene terephthalate) thermoplastic resin composition

[0057] As described in Example 2, the difference is that sodium benzoate, a nucleating agent for the purpose of accelerating the crystallization rate of the composition, is added, accounting for 0.15% of the total weight of the composition.

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Abstract

A propanediol polyetere-phthalate type thermoplastic resin composition contains PTT resin (30-90%), non-crystal thermoplastic resin (1-50%) and reinforcing fibres (1-60%) It can be used to make structure of car, machine, meter and electronic and electric equipment. Its advnatages are high mechanical preformance and very low torsional deformation.

Description

(1) Technical field [0001] The present invention relates to a thermoplastic polyester family resin composition and its moldings, in particular to the invention of a poly(trimethylene terephthalate) resin composition and its moldings. (2) Technical background [0002] Polybutylene terephthalate (English name poly(butyleneterephthalate), hereinafter referred to as PBT), a representative material of thermoplastic polyester family, is a semi-crystalline material with butyl groups, ester groups and benzene ring groups in the molecule. Thermoplastic engineering plastic material. PBT resin molding materials have the characteristics of good heat resistance, chemical resistance, electrical insulation, low water absorption and mechanical properties. In addition, they have high crystallization speed and good molding performance, so they are widely used in automobiles and instruments. Instrumentation, electrical, electronic and other industries as structural parts. [0003] When PBT r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/03C08J5/04
Inventor 张家良
Owner SHANDONG UNIV
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