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Method for improving impregnation effect of fiber cloth enhanced thermoplastic composite material

A technology for strengthening thermoplastic and composite materials, which is applied in the field of improving the impregnation effect of fiber cloth reinforced thermoplastic composite materials, can solve the problems of poor impregnation effect, etc., and achieve the effects of improving mechanical properties, improving impregnation effect, and benefiting mechanical properties.

Inactive Publication Date: 2013-01-23
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method for improving the impregnation effect of fiber cloth reinforced thermoplastic composite materials in view of the deficiencies in the prior art, which is characterized in that in order to solve the defects of poor impregnation effect of existing fiber cloth reinforced thermoplastic composite materials, by Fabrication of Fiber Cloth Reinforced Resin Matrix Composites by Secondary Hot Press Forming

Method used

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  • Method for improving impregnation effect of fiber cloth enhanced thermoplastic composite material
  • Method for improving impregnation effect of fiber cloth enhanced thermoplastic composite material
  • Method for improving impregnation effect of fiber cloth enhanced thermoplastic composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) After drying PPS at 100°C, measure it with KH550 at a mass ratio of 100:1, use a single-screw extruder to melt and extrude at a temperature of 290°C, and obtain a PPS film after shaping by a three-roller calender;

[0035] (2) The above-mentioned diaphragm and fiber cloth are stacked in the order of B layer / A layer / B layer to form a single layer, wherein A layer is the above-mentioned diaphragm, and B layer is glass fiber cloth; Under the condition of 10MPa and 10MPa, a hot press is carried out for 10min to obtain a fiber cloth reinforced polymer-based single-layer sheet prepreg;

[0036] (3) Cut the above-mentioned single-layer sheet prepreg into the required size and superimpose to form a composite laminate, and perform secondary hot pressing for 30 minutes at a temperature of 290°C and 40MPa to obtain a glass fiber cloth with a glass fiber content of 80% / PPS composite material;

[0037] (4) The above-mentioned diaphragm and glass fiber cloth were hot-pressed fo...

Embodiment 2

[0043] (1) After drying PPS at 120°C, measure it with KH560 at a mass ratio of 100:3, use a single-screw extruder to melt and extrude at a temperature of 300°C, and then shape it with a three-roll calender to obtain a PPS film;

[0044] (2) Lay the above diaphragm and fiber cloth in the order of B layer / A layer / B layer to form a single layer, wherein A layer is the above diaphragm and B layer is basalt fiber cloth; Under the condition of 8MPa and 8MPa, a hot press is carried out for 8min to obtain a fiber cloth reinforced polymer-based single-layer sheet prepreg;

[0045] (3) The above-mentioned single-layer sheet prepreg is cut into the required size and then superimposed to form a composite laminate, which is subjected to secondary hot pressing for 25 minutes at a temperature of 300°C and 35MPa to obtain a basalt fiber cloth with a basalt fiber content of 75% / PPS composite material;

[0046] (4) The above-mentioned diaphragm and basalt fiber cloth were hot-pressed for 25 m...

Embodiment 3

[0051] (1) After drying PPS and PA10T at 130°C, measure them with KH560 at a mass ratio of 50:50:5, use a single-screw extruder to melt and extrude at a temperature of 350°C, and then shape it with a three-roll calender to obtain PPS / PA10T diaphragm;

[0052] (2) The above-mentioned diaphragm and fiber cloth are stacked in the order of B layer / A layer / B layer to form a single layer, wherein A layer is the above-mentioned diaphragm and B layer is carbon fiber cloth; Under the condition of 5MPa, carry out a hot pressing for 5 minutes to obtain a fiber cloth reinforced polymer-based single-layer sheet prepreg;

[0053] (3) Cut the above-mentioned single-layer sheet prepreg into the required size and superimpose to form a composite laminate, and carry out secondary hot pressing at a temperature of 350°C and 30MPa for 20 minutes to obtain a carbon fiber cloth / PPS / with a carbon fiber content of 60%. PA10T composite material;

[0054] (4) The above-mentioned diaphragm and carbon ...

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Abstract

The invention discloses a preparation method for improving an impregnation effect of a fiber cloth enhanced thermoplastic composite material, wherein the fiber cloth enhanced thermoplastic composite material is prepared by a secondary hot press molding method. The method for improving the impregnation effect of the fiber cloth enhanced thermoplastic composite material comprises preparation of a monolayer sheet and overlapping combination of multiple monolayer sheets, wherein the monolayer is obtained by overlapping three layers of the fiber cloths, the resin matrixes and the fiber cloths at 2 to 10 MPa under the conditions that the fiber mass content is 30% to 80% and the arranging way is the fiber cloths, the resin matrixes and the fiber cloths; and the overlapping of multiple monolayer sheets is that each monolayer sheet is pressed and moulded after being overlapped in sequence under the conditions that the temperature is 290 to 400 DEG C and the pressure is 10 to 40 MPa. Therefore, the composite material has good impregnation effect and mechanical property.

Description

technical field [0001] The invention relates to a method for improving the impregnation effect of fiber cloth reinforced thermoplastic composite materials, which belongs to the technical field of polymer material processing. Background technique [0002] Fiber-reinforced polymer-based composites have been widely used in the fields of automobiles, aerospace, and military industries due to their high specific strength and specific modulus. Fiber-reinforced thermoplastic composites are simple in process, can be repaired and welded, and can be recycled. The utilization and other characteristics have received more and more people's attention. However, compared with thermosetting composite materials, the development of thermoplastic composite materials has lagged behind for a long time, mainly because the viscosity of thermoplastic resin matrix is ​​generally high (2 to 3 orders of magnitude higher than that of thermosetting resin), which makes it difficult for the reinforcing fib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29B11/10
Inventor 杨杰张守玉张坤王孝军龙盛如李光宪
Owner SICHUAN UNIV
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