Pultrusion method and equipment for thermoplastic composite material of continuous fiber

A technology of continuous fibers and composite materials, applied in the field of pultrusion molding methods and equipment for thermoplastic composite materials, which can solve problems such as harmful chemical solvents, rough surface of products, failure to achieve mechanical strength, etc., and achieve safe and reliable equipment and simple and easy methods The effect of row and continuous mass production

Inactive Publication Date: 2010-12-15
南京诺尔泰复合材料设备制造有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing well-known traditional process method is based on the pultrusion process using glass fiber and carbon fiber-added thermosetting resin as the matrix. Due to the following shortcomings, it cannot be directly applied to the processing of continuous fiber thermoplastic composite materials:
[0004] 1. The parts cannot be reshaped, because the cross-linking of resin molecules is irreversible;
[0005] 2. Harmful chemical solvents must be used, such as styrene, methyl diphenylamine, etc.;
[0006] 3. The best fiber / resin volume ratio cannot be obtained, and the maximum mechanical strength cannot be achieved, that is, compression, tensile, bending strength, and product surface roughness

Method used

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  • Pultrusion method and equipment for thermoplastic composite material of continuous fiber
  • Pultrusion method and equipment for thermoplastic composite material of continuous fiber
  • Pultrusion method and equipment for thermoplastic composite material of continuous fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like figure 1 , 2 shown.

[0031] A kind of pultrusion molding method of the thermoplastic composite material of continuous fiber, it comprises the following steps:

[0032] Firstly, the continuous fiber of thermoplastic composite material is drawn from the constant tension creel 1 through the yarn collecting plate 2 and sent to the dehumidifier 3 for dehumidification, and the moisture content of the continuous fiber is controlled below 3%;

[0033] Secondly, the dehumidified continuous fiber is sent into the impregnator 5 for impregnation; the impregnator 5 is mainly composed of a housing 501, an adjustment shaft 502, a fiber spreader 503 and a resin content controller 504, and the housing 501 is close to the dehumidifier 3 One end of the housing 501 is provided with a fiber perforated plate 505 for the continuous fiber after dehumidification to penetrate, and the other end of the shell 501 is provided with a fiber outlet hole for the impregnated continuous fiber to ...

Embodiment 2

[0048] like figure 1 , 2 shown.

[0049] A pultrusion molding equipment for continuous fiber thermoplastic composite materials, which includes a constant force creel 1, a yarn collecting plate 2, a dehumidifier 3, an impregnator 5, a forming mold 6, a cooling tank 7, a tractor 8, and a cutting machine 9 and blanking include a platform 10, the yarn collecting plate 2 is installed between the constant force creel 1 and the dehumidifier 3, the tractor 8 is located between the cooling tank 7 (water tank can be used) and the cutting machine 9, and the macerator 5 is located Between the desuperheater 3 and the molding die 6, the cooling tank 7 is installed next to the molding die 6, such as figure 1 As shown, the impregnator 5 is mainly composed of a housing 501, an adjustment shaft 502, a fiber spreader 503 and a resin content controller 504. The end of the housing 501 close to the dehumidifier 3 is provided with a continuous fiber for dehumidification. The other end of the hous...

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Abstract

The invention relates to a pultrusion method for a thermoplastic composite material of a continuous fiber, which is characterized by comprising the following steps of: firstly, after leading a continuous fiber made of a thermoplastic composite material out of a constant tension creel (1) to pass through a yarn collecting plate (2), delivering the continuous fiber into a dehumidifier (3) for dehumidifying and controlling the water content of the continuous fiber below 3 percent; secondly, delivering the dehumidified continuous fiber into a soaking device (5) for soaking; thirdly, controlling the heating temperature of a moulding die to be 150-300 DEG C to obtain a needed section bar; and fourthly, after delivering the moulded section bar into a cooling tank (7) for cooling, delivering the moulded section bar into a synchronous automatic cutting machine under the traction of a tractor (8) for cutting and packaging according to needed size. The invention also discloses complete equipment which comprises the constant tension creel (1), the yarn collecting plate (2), the dehumidifier (3), the soaking device (5), the moulding die (6), the cooling tank (7), the tractor (8) and the cutting machine (9). The invention has simple method, low equipment cost and high production efficiency.

Description

technical field [0001] The present invention relates to a composite material continuous molding method and equipment, especially a continuous pultrusion molding method of continuous fiber thermoplastic composite materials (such as reinforced polystyrene, reinforced polypropylene, polyvinyl chloride, polyphenylene sulfide, etc.) And equipment, specifically a continuous fiber thermoplastic composite material pultrusion method and equipment. Background technique [0002] Since the 1980s, thermoplastic resins and their composite materials have aroused great interest and made great progress. Thermoplastic composites avoid the inherent poor environmental friendliness, long processing cycle, and difficulty in recycling of thermosetting composites, and have strong flexibility and impact resistance, good damage resistance and damping properties. Thermoplastic composites can be reused. Continuous fiber thermoplastic composite profiles of various cross-sections (such as reinforced po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/52B29C70/54
Inventor 程逸建程正珲
Owner 南京诺尔泰复合材料设备制造有限公司
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