Production method of cluster-shaped fiber thermoplastic composite sheet material

A technology of composite sheet and production method, applied in the direction of layered products, textiles and papermaking, non-woven fabrics, etc., to achieve the effect of improving orientation and web structure, increasing strength and quality, and superior tensile and bending mechanical properties

Active Publication Date: 2012-04-18
湖南亚太实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this process, the glass fibers are dispersed to form glass fiber bundles, and the formed glass fiber monofilaments are few, the length of the glass fibers is 4-20 mm, the mass of the glass fiber bundles in the glass fiber and matrix mixture is 30-40%, and the PP powder The content is 70-40%, and the density of the plate is relatively high, but the plate of this process can only be used in semi-structural materials for automotive interiors

Method used

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  • Production method of cluster-shaped fiber thermoplastic composite sheet material
  • Production method of cluster-shaped fiber thermoplastic composite sheet material
  • Production method of cluster-shaped fiber thermoplastic composite sheet material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The diameter of the pneumatic dispersing and mixing chamber 17 is 800mm, the diameter of the conveying pipeline 6 is Φ20mm, the diameter of the rising dispersed airflow nozzle 12 is Φ15mm, the diameters of the clockwise side stirring and cutting airflow nozzle 14 and the counterclockwise side stirring and cutting airflow nozzle 15 are equal. It is Φ10mm.

[0054] Raw materials: E-glass fiber 2400tex (twisted roving, density 2.35g / cm3 , diameter 13μm), the shear length of glass fiber bundles is 50-75mm, 145#PP powder (density 0.91g / cm 3 , 80 mesh), the rubber surface adopts PP film 55g / m 2 , the non-woven fabric is made of spunlace non-woven fabric with PE rubber surface 100g / m 2 (of which PE film 45g / m 2 , PET spunlace non-woven fabric 55g / m 2 ).

[0055] The velocity of the glass fiber conveying airflow is 4m / s, the velocity of the ascending dispersed airflow is 3m / s, and the velocity of the lateral stirring and cutting airflow is 2.0m / s.

[0056] The uniform base...

Embodiment 2

[0058] The diameter of the pneumatic dispersing and mixing chamber 17 is 600mm, the diameter of the conveying pipeline 6 is Φ18mm, the diameter of the rising dispersed airflow nozzle 12 is Φ15mm, the diameters of the clockwise side stirring and cutting airflow nozzle 14 and the counterclockwise side stirring and cutting airflow nozzle 15 are equal. It is Φ10mm.

[0059] Raw materials: E-glass fiber 2400tex (twisted roving, density 2.35g / cm 3 , diameter 13μm), the shear length of glass fiber bundles is 50-75mm, 145#PP powder (density 0.91g / cm 3 , 80 mesh), polyethylene (PE) powder (density 0.95g / cm 3 , 60 mesh), the rubber surface adopts PP film 55g / m 2 , the non-woven fabric adopts needle-punched non-woven fabric 80g / m 2 .

[0060] The velocity of the glass fiber conveying airflow is 5m / s, the velocity of the ascending dispersed airflow is 4m / s, and the velocity of the lateral stirring and cutting airflow is 3m / s.

[0061] The uniform base mat made of disordered and three...

Embodiment 3

[0063] The diameter of the pneumatic dispersing and mixing chamber 17 is 500mm, the diameter of the glass fiber conveying pipe is Φ25mm, the diameter of the rising dispersed airflow nozzle 12 is Φ15mm, the clockwise side stirring and cutting airflow nozzle 14 and the counterclockwise side stirring and cutting airflow nozzle 15 The diameters are Φ8mm.

[0064] Raw materials: E-glass fiber 2400tex (twisted roving, density 2.35g / cm 3 , diameter 13μm), the cut length of glass fiber bundles is 70-75mm, 145#PP powder (density 0.91g / cm 3 , 80 mesh), polyethylene (PE) powder (density 0.95g / cm 3 , 60 mesh), the rubber surface adopts PP film 55g / m 2 , the non-woven fabric adopts needle-punched non-woven fabric 80g / m 2 .

[0065] The velocity of the glass fiber conveying airflow is 3.5m / s, the velocity of the ascending dispersed airflow is 3m / s, and the velocity of the lateral stirring and cutting airflow is 2.5m / s.

[0066] The uniform base mat made of disordered and three-dimensio...

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Abstract

The invention discloses a production method of a cluster-shaped fiber thermoplastic composite sheet material. By the adoption of technological processes such as pneumatic process, dispersion, mixing, adherence, settlement for web formation, dusting, baking, composite typing and the like, the length-cut fiber bundle is fully dispersed to form cluster-shaped fiber so as to raise the uniform effect of adhering fiber and mixed powders, reduce the content of the mixed powders in the base felt and improve the fiber orientation and fiber web structure in the base felt. As the product is formed into an integral structure, the shear behavior of the product in the invention is superior to that of products of the same kind. In addition, as the fiber form has isotropy, mechanical properties, such as tensile performance and bending resistance in each direction, of the product in the invention are superior to those of products of the same kind, and the longitudinal and transverse strength ratio is reduced. The fiber in the blank felt is not damaged by the machinery fixed network, thus raising expansion rate of the composite sheet material, reduce density and increase the strength quality of the cluster-shaped fiber composite sheet material.

Description

technical field [0001] The invention relates to a production method of a fiber thermoplastic composite sheet, in particular to a production method of a clustered fiber thermoplastic composite sheet. Background technique [0002] At present, glass fiber reinforced thermoplastic composite panels (Glassmat reinforced thermoplastics) commonly used in domestic and foreign automotive interiors, referred to as GMT panels. Regardless of the wet process or dry process, the fiber orientation in this type of board is obvious, resulting in the longitudinal and transverse strength ratios of the wet process composite plate fibers being greater than 1:2.2, and the dry process composite plate fiber longitudinal and transverse strength ratios being greater than 1 : 1.5, and the uniformity of the carded and needle-punched fiber-based felt in the dry process is poor, and the unevenness is 4% to 7%. The weight per unit area is achieved, and the light material reduction effect is not significan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/24B32B5/30B32B5/26D04H1/732
Inventor 董升顺戴宏亮蒋建云汤青红
Owner 湖南亚太实业有限公司
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