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Forming method of short fiber reinforced thermoplastic composite material corrugated structure

A technology of short fiber reinforcement and composite materials, which is applied in the molding field of short fiber reinforced thermoplastic composite corrugated structures, and can solve the problems of poor mechanical properties of foam sandwich structures, poor bonding force between skin and foam, and poor conformability of foam, etc. Achieve the effects of convenient processing, improved compressive and bending resistance, and strong conformability

Inactive Publication Date: 2021-06-25
南京特塑复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The national utility model patent CN205150216U has prepared a foam sandwich wing for a small UAV. The foam structure is an upper skin, an upper surface glue, a foam sandwich layer, a lower surface glue and a lower skin. The reason is that the mechanical properties of the foam sandwich structure are poor, and the bonding force between the skin and the foam is poor. In addition, the foam conformability is poor and the processing is cumbersome.

Method used

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  • Forming method of short fiber reinforced thermoplastic composite material corrugated structure
  • Forming method of short fiber reinforced thermoplastic composite material corrugated structure
  • Forming method of short fiber reinforced thermoplastic composite material corrugated structure

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] like figure 1 As shown, the corrugated structure of the short fiber reinforced thermoplastic composite material of the present invention includes fibers and a resin matrix, the resin matrix covers the fibers, and the corrugated structure is a continuous trapezoidal waveform.

[0022] The fiber is one or a mixture of carbon fiber, glass fiber, aramid fiber and basalt fiber.

[0023] The resin matrix is ​​one of PP, PE, PA, PPS and PEEK plastics, that is, the resin matrix can be polypropylene, polyethylene, nylon, polyphenylene sulfide, polyether ether ketone and the like.

[0024] In the present invention, the corrugated material is designed as a trapezoidal waveform, which has higher rigidity and other mechanical properties than traditional core materials (balsa wood, honeycomb and foam, etc.). In addition, by setting reinforcing fibers, its com...

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Abstract

The invention discloses a forming method of a short fiber reinforced thermoplastic composite material corrugated structure. Related raw materials comprise reinforced fibers and a thermoplastic resin matrix, and related equipment comprises sheet equipment, a hot-pressing shaping roller, a cold-pressing shaping roller, a transmission device and a cutting device. The sheet equipment comprises an extruder and a sheet mold, the outer contours of the hot-pressing shaping roller and the cold-pressing shaping roller are both provided with uniform shaping teeth, the length direction of the shaping teeth is the axial direction of the hot-pressing shaping roller and the cold-pressing shaping roller, and the section of the shaping teeth is trapezoidal. The corrugated structure is characterized in that the reinforced fibers are introduced into the resin matrix, the mechanical properties such as rigidity are improved, the corrugated structure is arranged to be in a trapezoid shape, and the compression resistance and the bending resistance are improved. According to the preparation device disclosed by the invention, the wavy corrugated structure can be continuously prepared, and the efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of sandwich structure manufacturing, in particular to a forming method of short fiber reinforced thermoplastic composite material corrugated structure. Background technique [0002] The use of low-density sandwich structural materials in sandwich structural composites can increase the thickness of the laminate and greatly increase the stiffness of the laminate. Therefore, this type of structural composite is widely used in aerospace, shipbuilding, and military industries. . At present, the types of sandwich structure materials are mainly rigid foam, honeycomb, balsa wood and corrugated structure; although the above sandwich structure materials have been used as sandwich materials in different fields, but because of their own structural shortcomings, their application fields extension is limited. [0003] In the national utility model patent CN202368005U, a sandwich structure is prepared, and its structural...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C69/00
CPCB29C69/001
Inventor 陈同海张守玉杨杰王孝军水锋
Owner 南京特塑复合材料有限公司
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