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a thermoplastic composition

A technology of thermoplastic composition and thermoplastic resin, which is applied in the field of thermoplastic composition, can solve problems such as poor CTI value and arc resistance, limit the application of thermoplastic materials, and poor dimensional stability at high temperature, so as to save manual trimming process and flame retardancy Excellent performance and high temperature dimensional stability

Active Publication Date: 2020-09-18
BENSONG ENG PLASTICS HANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary thermoplastics have a low allowable use temperature, are prone to deformation at high temperatures, have poor dimensional stability at high temperatures, and wear resistance cannot meet the requirements of contact support materials.
In addition, the CTI value and arc resistance are generally inferior to thermoset materials, which limits the application of thermoplastic materials in contact support

Method used

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  • a thermoplastic composition
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Examples

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Embodiment Construction

[0038] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0039] Examples of raw materials

[0040] HTN resin, melting point Tm=305°C, glass transition temperature Tg=135°C, water absorption=0.43%;

[0041] PPA resin, melting point Tm=310°C, glass transition temperature Tg=124°C, water absorption=0.24%;

[0042] PA10T resin, melting point Tm=316°C, glass transition temperature Tg=135°C, water absorption=0.12%;

[0043] PA46 resin, melting point Tm=290°C, glass transition temperature Tg=78°C, water absorption=3.7%;

[0044] PA66 resin, melting point Tm=262°C, glass transition temperature Tg=47°C, water absorption=1.3%;

[0045] Glass fiber: short glass fiber with a diameter of 5-23 μm;

[0046] Inorganic mineral powder: talcum powder, wollastonite, glass microspheres;

[0047...

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Abstract

The invention relates to a thermoplastic composition which can replace thermosetting plastic and cross-linked nylon when used as a contact supporting part for a medium-and-high-grade alternating current contactor. According to the invention, a specific resin matrix is selected and used, and a specific fire retardant is rationally compounded with a reinforcing agent and a wear-resisting agent, so a reinforced flame-retardant wear-resistant synergistic system is formed, and the effect each component is made full use of. Compared with the prior art, the thermoplastic composition provided by the invention has the characteristics of high impact strength, high heat resistance, excellent flame resistance, good wear resistance, good dimensional stability at high temperature, superior arc resistance and good insulating properties, and completely satisfy performance requirements of a contact supporting material.

Description

technical field [0001] The present invention relates to the field of polymer composite materials, in particular, to a kind of product that can successfully replace thermosetting plastics and cross-linked nylon for contact support parts of middle and high-end AC contactors, has good wear resistance, high temperature dimensional stability, and high CTI value , A thermoplastic composition with excellent arc resistance and good flame retardancy. Background technique [0002] The AC contactor is a type of low-voltage electrical appliance that uses an external power supply to add to the coil to generate an electromagnetic field, and when the power is turned on, the contact point is disconnected after the power is turned off. The AC contactor is mainly composed of four parts: electromagnetic system, contact system, arc extinguishing device, insulating shell and accessories. Among them, the electromagnetic system includes attraction coil, moving iron core and static iron core; Head...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08L77/06C08L77/10C08L25/06C08L25/18C08L27/18C08L83/04C08K13/04C08K7/14C08K3/34C08K7/20C08K3/38C08K3/22C08K3/30C08K5/103
CPCC08L77/00C08L77/06C08L77/10C08L2201/02C08L2201/08C08L2203/20C08L2205/035C08L25/18C08L27/18C08L83/04C08K13/04C08K7/14C08K3/34C08K3/2279C08K2003/387
Inventor 曾湘云陈光辉周永松徐淑芬
Owner BENSONG ENG PLASTICS HANGZHOU
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