Enhanced heat-resistant PA66 composite

A technology of PA66 and composite materials, applied in the field of reinforced heat-resistant PA66 composite materials, can solve the problems of the heat resistance and impact strength of PA66 composite materials need to be further improved, and achieve the effect of increasing heat resistance

Inactive Publication Date: 2013-09-11
SUZHOU NEW DISTRICT JIAHE PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many studies on improving the performance of PA66. Although some achievements have been made, the heat resistance and impact strength of PA66 composite materials still need to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] 60 parts of PA66, 5 parts of silicon carbide whiskers, 0.6 parts of pentaerythritol tetrastearate, 0.1 parts of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, tetrakis[β-(3,5 - 0.1 part of di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester.

[0013] The preparation method of the present invention: according to the above mass ratio, uniformly mix PA66 after vacuum drying with silicon carbide whiskers, pentaerythritol tetrastearate, coupling agent and antioxidant to obtain a mixed material, the mixing temperature is 40°C, and then The mixed material is extruded and granulated by twin-screw, and the temperature of each section of the extruder is controlled at 250°C. The product performance is shown in Table 1.

[0014]

Embodiment 2

[0016] 80 parts of PA66, 8 parts of silicon carbide whiskers, 0.8 parts of pentaerythritol tetrastearate, 0.2 parts of γ-methacryloxypropyl trimethoxysilane, tetrakis[β-(3,5-di-tert-butyl 0.3 parts of -4-hydroxyphenyl) propionate] pentaerythritol ester.

[0017] The preparation method of the present invention: according to the above mass ratio, the vacuum-dried PA66, silicon carbide whiskers, pentaerythritol tetrastearate, coupling agent and antioxidant are uniformly mixed to obtain a mixed material, and the mixing temperature is 50 ° C. The mixed material is extruded and granulated by twin-screw, and the temperature of each section of the extruder is controlled at 270°C. The product performance is shown in Table 1.

[0018]

Embodiment 3

[0020] 70 parts of PA66, 6 parts of silicon carbide whiskers, 0.7 parts of pentaerythritol tetrastearate, 0.15 parts of tetraisopropyl bis(dioctylphosphite acyloxy) titanate, tris[2.4-di-tert-butylbenzene Base] phosphite 0.2 part.

[0021] The preparation method of the present invention: according to the above-mentioned mass ratio, the PA66 after vacuum drying, silicon carbide whiskers, pentaerythritol tetrastearate, coupling agent and antioxidant are uniformly mixed to obtain a mixed material, the mixing temperature is 45 °C, and then The mixed material is extruded and granulated by twin-screw, and the temperature of each section of the extruder is controlled at 260°C. The product performance is shown in Table 1.

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PUM

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Abstract

An enhanced heat-resistant PA66 composite comprises the following raw materials: by mass, 60-80 parts of PA66, 5-8 parts of silicon carbide whiskers, 0.6-0.8 part of pentaerythritol tetrastearate, 0.1-0.2 part of a coupling agent, 0.1-0.3 part of an antioxidant. The coupling agent is N-(beta-aminoethyl)-gamma-aminopropyl trimethoxy silane, gamma-methacryloxy propyl trimethoxy silane or tetraisopropyl di(dioctylphosphate) titanate. The antioxidant is pentaerythritol ester tetra-[beta-(3,5-ditert-butyl-4-hydroxyphenyl )propionate] or tris-(2,4-di-tert-butylphenyl) phosphite. The silicon carbide whiskers are uniformly dispersed in the PA66, so that heat resistance, abrasion resistance and impact resistance strength of the PA66 composite are significantly increased.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an enhanced heat-resistant PA66 composite material. Background technique [0002] Nylon is popular and widely used because of its excellent wear resistance, oil resistance and chemical resistance, but it still has the disadvantages of poor heat resistance and impact strength. With the rapid development of the automobile industry and the electronics industry, there is an increasing demand for new composite materials with high heat resistance and high impact strength. At present, there are many studies on improving the performance of PA66. Although some achievements have been made, the heat resistance and impact strength of PA66 composite materials still need to be further improved. [0003] To sum up, how to overcome the shortcomings of the existing technology has become an urgent technical problem in the field of PA66 composite materials. Contents of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08K7/10C08K5/103C08K5/134C08K5/526
Inventor 张卫蒋学功张美英
Owner SUZHOU NEW DISTRICT JIAHE PLASTIC
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