Method for preparing polyphenylene sulfide plate with large plane

A polyphenylene sulfide and large plane technology, which is applied in the field of preparation of large plane polyphenylene sulfide sheets, can solve the problems of easy warping molding cycle of large plane sheets, difficulty in preparing large plane sheets, uneven solid state mixing, and the like. Achieve excellent dimensional stability, good secondary processability, and shorten the molding cycle.

Inactive Publication Date: 2010-03-24
SICHUAN COREMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems existing in the existing polyphenylene sulfide preparation method that it is not easy to prepare a large flat sheet, the prepared large flat sheet is easy to warp or brittle or has a long molding cycle, uneven solid state mixing, and poor mechanical properties. A method for preparing a large-plane polyphenylene sulfide sheet is provided, so that the prepared large-plane polyphenylene sulfide sheet has good mechanical properties, is not easy to warp, is uniformly mixed in a solid state, meets requirements for toughness, has controllable thickness and smaller thickness tolerance, and Simple equipment and easy mass production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Prepare 3kg of polyphenylene sulfide composite materials meeting the following component requirements:

[0019] 30-70% polyphenylene sulfide resin;

[0020] 30-65% reinforcing fibers and mineral fillers, wherein the reinforcing fibers may be glass fibers;

[0021] 3-10% reactive toughening agent;

[0022] 0.5-3% antioxidants, lubricants and dyes.

[0023] Wherein the glass fiber content is 40%.

[0024] Then carry out the following process operations:

[0025] a. Put the above polyphenylene sulfide composite material into a hot air drying oven, and dry it at 140°C for 5 hours;

[0026] b. Then the above-mentioned polyphenylene sulfide composite material is melt-blended and extruded through a twin-screw extruder, the melt temperature of the extruded above-mentioned composite material is 280-320°C, and the speed of the twin-screw extruder is 280 rpm The vacuum degree is -0.09MPa, and the melt is extruded into a 300mm×300mm pressing die at 300°C. The temperature of th...

Embodiment 2

[0032] Prepare 22kg polyphenylene sulfide composite materials meeting the following component requirements:

[0033] 30-70% polyphenylene sulfide resin;

[0034] 30-65% reinforced fiber and mineral filler;

[0035] 3-10% reactive toughening agent;

[0036] 0.5-3% antioxidants, lubricants and dyes.

[0037] Wherein the reinforcing fiber is carbon fiber (CF), and the content is 40%.

[0038] Then carry out the following process operations:

[0039] a. Put the above-mentioned polyphenylene sulfide composite material into a hot air drying oven, and dry at 150°C for 6 hours;

[0040] b. Then the above-mentioned polyphenylene sulfide composite material is melt-blended and extruded through a twin-screw extruder, the melt temperature of the extruded above-mentioned composite material is 280-320°C, and the speed of the twin-screw extruder is 300 rpm The vacuum degree is -0.09MPa, and the melt is extruded into a 1000mm×500mm pressing die at 310°C. The temperature of the pressing di...

Embodiment 3

[0046] Prepare 110kg of polyphenylene sulfide composite materials that meet the following component requirements:

[0047] 30-70% polyphenylene sulfide resin;

[0048] 30-65% reinforced fiber and mineral filler;

[0049] 3-10% reactive toughening agent;

[0050] 0.5-3% antioxidants, lubricants and dyes.

[0051] The content of glass fiber and mineral filling is 65%.

[0052] Then carry out the following process operations:

[0053]a. Put the above polyphenylene sulfide composite material into a hot air drying oven, and dry at 150°C for 8 hours;

[0054] b. Then the above-mentioned polyphenylene sulfide composite material is melt-blended and extruded through a twin-screw extruder, the melt temperature of the extruded above-mentioned composite material is 280-320°C, and the speed of the twin-screw extruder is 350 rpm The vacuum degree is -0.09MPa, and the melt is extruded into a 1000mm×1000mm pressing die at 320°C. The temperature of the pressing die has been raised to 280-...

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PUM

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Abstract

The invention relates to a preparation method of a large planar polyphenylene sulfide board, in particular to a preparation method of a polyphenylene sulfide board, which aims at solving the problem existing in the prior art that the large planar polyphenylene sulfide board with good mechanical property is not easy to be prepared. The method comprises the following steps: a polyphenylene sulfide composite material is put into a hot-air drying oven at the temperature of 100-150 DEG C and kept for 4 to 8 hours; the polyphenylene sulfide composite material is fused at the temperature of 280-320 DEG C, mixed together and squeezed out, and the fused mass thereof is squeezed into a compacting die heated to the temperature of 280-320 DEG C; the initial states under the identical die stamping pressure and die stamping height are maintained at the temperature of 280-320 DEG C; when the temperature of the fused mass is reduced to 260-280 DEG C, pressure is applied, and pressure complementing isstopped when the temperature is reduced to 230-250 DEG C; the gradient type annealing treatment is carried out when the temperature of the fused mass is reduced between 150 and 250 DEG C; and then, natural temperature reducing and pressure maintaining are performed, stripping is carried out by pressure releasing when the ambient temperature is reached, and then the finished product is obtained. The method can be widely applied to special tool boards, working tabletops, and the like.

Description

technical field [0001] The invention relates to a preparation method of a polyphenylene sulfide plate, in particular to a preparation method of a large plane polyphenylene sulfide plate. Background technique [0002] Polyphenylene sulfide (English abbreviation: PPS) is a new type of high-performance thermoplastic resin, which has excellent high temperature resistance, corrosion resistance, radiation resistance, flame retardancy, balanced physical and mechanical properties, excellent dimensional stability and excellent electrical properties. Performance and other characteristics, it is widely used as a structural polymer material, and is widely used as a special engineering plastic after filling and modification. As a special engineering plastic with a high degree of engineering, in order to expand the scope of application, the development trend of polyphenylene sulfide has been developed from the use of most injection molding products to the manufacture of profiles. In terms...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C43/02B29C43/58B29C43/34B29C71/02B29C43/52B29B13/06B29K105/06B29K81/00B29L7/00
Inventor 王港达君于庆顺李建军芦艾张启戎余江雪赵仕勇鲍延年江光平
Owner SICHUAN COREMER CO LTD
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