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Cluster fiber pneumatic stirring, dispersing and netting device

A pneumatic stirring and dispersing technology, which is applied in the direction of mixer accessories, transportation and packaging, mixers, etc., to achieve the effects of superior tensile and bending mechanical properties, low energy consumption, and improved uniformity

Active Publication Date: 2013-04-17
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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  • Cluster fiber pneumatic stirring, dispersing and netting device
  • Cluster fiber pneumatic stirring, dispersing and netting device
  • Cluster fiber pneumatic stirring, dispersing and netting device

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Raw materials: E-glass fiber 2400tex (twisted roving, density 2.35g / cm 3 , diameter 13μm), glass fiber bundle shear length 60mm, 145# polypropylene PP powder (density 0.91g / cm 3 , 80 mesh), the mass ratio of glass fiber to PP powder is 63:37.

[0046]Pneumatic stirring, dispersing and mixing of the present invention forms a mesh embryo mat and the surface density of the sheet is 1350g / m 2 , sheet density 0.65g / cm 3 , Sheet thickness δ3.2mm, after testing, the transverse tensile strength of the sheet is 12.68Mpa, the longitudinal tensile strength of the sheet is 11.98Mpa; the transverse bending strength of the sheet is 10.97Mpa, the longitudinal bending strength of the sheet is 9.86Mpa; the elongation at break is 3.12 %, the expansion rate of the sheet is 495%.

Embodiment 2

[0048] Raw materials: E-glass fiber 2400tex (twisted roving, density 2.35g / cm 3 , diameter 13μm), glass fiber bundle cut length is 55mm, 145#PP powder (density 0.91g / cm 3 , 80 mesh), the mass ratio of glass fiber to PP powder is 60:40.

[0049] Pneumatic stirring, dispersing and mixing of the present invention forms a mesh embryo mat and the surface density of the sheet is 1350g / m 2 , sheet density 0.76g / cm 3 , Sheet thickness δ3.0mm, after testing, the transverse tensile strength of the sheet is 13.78Mpa, the longitudinal tensile strength of the sheet is 12.46Mpa; the transverse bending strength of the sheet is 11.68Mpa, the longitudinal bending strength of the sheet is 10.38Mpa; the elongation at break is 2.96 %, the expansion rate of the sheet is 520%.

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Abstract

The invention discloses a cluster fiber pneumatic stirring, dispersing and netting device. an inner cone (10) is provided with an uniformly dispersed nozzle for rising dispersed air-flow (12) and multi-group static nozzles (13) and injector nozzles (11), an outer cone (9) is provided with a floated air-flow inlet (8); a pneumatic dispersed mixing chamber (17) connected with the outer cone is provided with multi-group clockwise lateral nozzles for stirring and slitting air-flow (14) and an anticlockwise lateral nozzle for stirring and slitting air-flow (15), a transfer channel (21) is connected with the pneumatic dispersion mixing chamber (17), the other end of the transfer channel (21) is connected with a settlement mixing chamber (23), the settlement mixing chamber (23) is provided with multi-group static powder injection nozzles (22), the bottom of the settlement mixing chamber (23) is a netting settlement bucket. According to the invention, the fully dispersed cluster fiber obtained by long-cut fiber bundle is capable of increasing the uniform effect of adherence of fiber and mixed powder, reducing the content of mixed powder in felt base, improving the orientation and fiber web structure of the fiber in felt base, raising the expansion ratio of a composite sheet material, reducing the density and increasing the intensity quality of the composite sheet material.

Description

technical field [0001] The invention relates to a stirring dispersion and web forming device, in particular to a clustered fiber pneumatic stirring dispersion and web forming device. Background technique [0002] At present, glass fiber reinforced thermoplastic composite panels (Glass mat 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 significant; in addition,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F13/02B01F13/00B01F3/18B01F15/02B01F33/40
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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