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Preparation method of PPS (polyphenylene sulfide) composite material

A composite material and powder technology, applied in the field of preparation of PPS composite materials, can solve the problems of slow realization of composite materials, large differences, poor tensile properties, etc., and achieve the effect of wide application range and high tensile strength.

Inactive Publication Date: 2013-02-13
张家港市新东玻棉制品厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the preparation process of composite materials in the market, there are large differences in use and many shortcomings. Due to the limitation of process conditions, the tensile properties of the obtained products are not good, so that the composite materials are slow to be realized in engineering.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1) PPS powder, according to 15Kg / m 2 Inject into the mold, vibrate at 200~500Hz for 15~25s to make it spread evenly, add glass fiber cloth, and then press 30Kg / m PPS powder on the glass fiber cloth 2 Inject into the mold, vibrate at 200~500Hz for 15~25s to spread evenly;

[0017] 2) Put the mold laid in step 1) into the hot press, apply an initial pressure of 1.6MPa to make the raw material more dense, and heat it from room temperature to 285°C at a rate of 10°C / min. At this stage, due to the polyphenylene sulfide Gradual softening of the powder, the initial pressure will drop to 0; then at a speed of 5°C / min, the temperature will rise from 285°C to 319°C, and the pressure will be increased to 3.8MPa; the holding temperature is 319°C, the pressure is 3.8MPa, and the time is 35min; the rate of 2°C / min is lowered to room temperature, and the pressure is maintained at 3.5MPa during the cooling process. After cooling down to room temperature, the mold is opened and the PPS...

Embodiment 2

[0020] 1) PPS powder, according to 20Kg / m 2 Inject into the mold, vibrate at 200~500Hz for 15~25s to make it spread evenly, add carbon fiber cloth, and then put PPS powder on top of the carbon fiber cloth at 25Kg / m 2 Inject into the mold, vibrate at 200~500Hz for 15~25s to spread evenly;

[0021] 2) Put the mold laid in step 1) into the hot press, apply an initial pressure of 1.8MPa to make the raw material more dense, and heat it from room temperature to 286°C at a rate of 12°C / min; then heat it at a rate of 5°C / min The temperature rises from 286°C to 320°C; the pressure is increased to 4MPa, the temperature is maintained at 320°C, the pressure is 4MPa, and the time is 30min; the rate of 1.5°C / min is reduced to room temperature, and the pressure is maintained at 3.6MPa during the cooling process , after cooling down to room temperature, open the mold and take out the PPS composite material.

[0022] The tensile strength of the tested product at 25°C is 203MPa.

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Abstract

The invention discloses a preparation method of a PPS (polyphenylene sulfide) composite material, which comprises the following steps: 1) uniformly spreading PPS powder and fiber cloth alternatively; and 2) placing a mold, in which the PPS powder and the fiber cloth are spread, in the step 1) into a hot press, pressurizing and heating according to steps and then cooling and finalizing to open the mold to obtain the PPS composite material. The production process is simple and has low energy consumption and a short production cycle. The obtained product has high tensile strength and a wide application range.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a method for preparing PPS composite materials [0002] Law. Background technique [0003] Due to the increasing development of industry and technology, and people's emphasis on energy saving and environmental protection, people also put forward requirements for materials such as light weight, high strength, high modulus, easy manufacture, and recyclability. Traditional single materials cannot meet such requirements. The composite material that combines two or more substances with different physical and chemical properties can not only meet these requirements, but also has the designability of the material, making it possible to maximize the performance of the material. Therefore, composite materials have been vigorously researched, developed and applied in aerospace industry, automobile manufacturing industry, shipbuilding industry, high-end sports equipment and ot...

Claims

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Application Information

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IPC IPC(8): B29C70/40
Inventor 邓志东
Owner 张家港市新东玻棉制品厂
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