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Cluster fiber thermoplastic composite sheet material

A composite sheet and thermoplastic technology, which is applied in the direction of textiles, papermaking, non-woven fabrics, layered products, etc., can solve the large difference in the longitudinal and transverse strength ratio of the sheet, the effect of light weight reduction is not significant, and the fiber is not anisotropic The problem of homogeneity and other problems can be solved, and the effect of small vertical and horizontal strength ratio, light weight and low density of the board can be achieved

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

[0003] Due to the process characteristics of the above-mentioned thermoplastic composite sheet, the fiber web in the sheet is composed of multi-layer single fiber webs laid and superimposed, and the fibers are not isotropic, resulting in a large difference in the longitudinal and transverse strength ratio of the sheet and poor shear resistance of the sheet. At present, the high-stretch decorative parts are still achieved by increasing the weight per unit area of ​​the material, and the effect of light material reduction is not significant

Method used

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  • Cluster fiber thermoplastic composite sheet material
  • Cluster fiber thermoplastic composite sheet material
  • Cluster fiber thermoplastic composite sheet material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 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.

[0040] 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), 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 ).

[0041] 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.

[0042] The uniform ba...

Embodiment 2

[0044] 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.

[0045] 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 .

[0046] 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.

[0047] The uniform base mat made of disordered and three...

Embodiment 3

[0049] 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.

[0050] 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 .

[0051] 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.

[0052] The uniform base mat made of disordered and three-dimensio...

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Abstract

The invention discloses a cluster fiber thermoplastic composite sheet material, comprising a sheet material upper superficial layer (37), an intermediate fiber and mixed powder matrix layer (35) and a sheet material lower superficial layer (36). The intermediate fiber and mixed powder matrix layer (35) is produced by the following steps: (1) fiber shearing; (2) pneumatic disperse-mixing-adherence; (3) mixing settlement to form net. The cluster fiber thermoplastic composite sheet material of the invention has enhanced shear behavior, strong tension and bending resistance mechanical properties at each direction, high puffed rate, low density, and high quality intensity, and is lightweight, humidity resistant, nontoxic and harmless.

Description

technical field [0001] The invention relates to a composite sheet, in particular to a clustered fiber thermoplastic composite sheet. Background technique [0002] At present, fiber thermoplastic composite sheets prepared by dry process or wet process at home and abroad, such as hemp fiber composite sheet, PP glass fiber composite sheet, etc., due to the characteristics of the process, make the fiber orientation in the matrix of the sheet stronger, Affect the mechanical index and performance of the plate. The dry process adopts the carding, laying and acupuncture process of the non-textile process. It is made of needle-punched felt by mixing the reinforcing fiber and the hot-melt fiber through opening, carding, laying and acupuncture. The base mat is baked, compounded, and shaped to prepare a fiber thermoplastic composite sheet. The sheet matrix is ​​composed of multi-layer single fiber nets, and the fiber directionality is strong. Intensity ratios are greater than 1:1.5, a...

Claims

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Application Information

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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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