Hemp fibre woven reinforced foam sandwich structure composite material connected by sewing and preparation method thereof

A composite material and sandwich structure technology, applied in the direction of braiding, fiber treatment, chemical post-treatment of fibers, etc., to achieve good shock absorption and energy absorption performance, good stability and fracture toughness, and excellent impact resistance.

Pending Publication Date: 2017-12-08
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of the performance of the existing polyurethane foam material, the application has certain limitations. Therefore, it is necessary to develop a new type of high-performance suture-connected braided structure composite material that meets environmental protection requirements to meet the huge demand for lightweight materials in various fields. need

Method used

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  • Hemp fibre woven reinforced foam sandwich structure composite material connected by sewing and preparation method thereof
  • Hemp fibre woven reinforced foam sandwich structure composite material connected by sewing and preparation method thereof
  • Hemp fibre woven reinforced foam sandwich structure composite material connected by sewing and preparation method thereof

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Embodiment 1

[0038] Embodiment one: used as auto parts

[0039] The suture-connected hemp fiber braided reinforced foam sandwich structure composite material of the present invention can be used as an automobile outer cover board, an automobile door interior trim board, an automobile roof, an automobile seat, and the like. The composite material of the present invention has the advantages of good energy-absorbing and shock-absorbing properties, shear damage resistance, high fracture toughness, and not easily deformed. The material has the advantages of antibacterial and breathable, and can improve the comfort of existing car seats. The good energy-absorbing performance of the automobile interior parts of the present invention can also protect the safety of occupants, and the good rigidity and strength make it suitable for automobile outer covering parts. Therefore, the composite material of the invention can be widely used in the field of automobiles and has broad market prospects.

[00...

Embodiment 2

[0045] Embodiment two: for the construction field

[0046] The suture-connected hemp fiber braided reinforced foam sandwich structure composite material can be used for building insulation boards, sound insulation boards, light bricks and the like. The composite material of the invention has the advantages of heat preservation, sound insulation, antibacterial, dehumidification, air permeability, high strength, good rigidity, light weight and the like. The advantages of mildew resistance, corrosion resistance, light weight, heat preservation and sound insulation make it can be directly used in building decoration panels and special-purpose building materials such as heat preservation materials and sound insulation materials. The advantages of light weight and high strength and rigidity enable it to be used in the manufacture of light bricks, and it can be naturally degraded, which can effectively protect the environment compared with traditional building materials.

[0047] Pr...

Embodiment 3

[0052] Embodiment three: for safety protection device

[0053] The suture-connected hemp fiber braided reinforced foam sandwich structure composites can be used for gloves, protective clothing, helmets and other products. The material has a negative Poisson's ratio effect, and has the advantages of light weight, high strength, and good rigidity, and can effectively prevent collisions, shocks, and shocks. Compared with traditional materials, it has the advantages of being lighter, stronger, more stable, and better in performance, and it also has the advantages of good air permeability, antibacterial, and dehumidification, which can make people wearing protective equipment more comfortable and safe. This material can be produced and processed in an economical way and has great prospects for industrial production applications.

[0054] This embodiment will describe in detail that the present invention is used in protective gear production process

[0055] Step 1: The hemp fiber...

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Abstract

The invention discloses a hemp fibre woven reinforced foam sandwich structure composite material connected by sewing and a preparation method thereof, and relates to the technical field of structural composite materials. The composite material takes a hemp fibre material as a core layer enhancing body and takes a polylactic acid foam material as a core layer substrate; a panel is selected according to specific purpose; the hemp fibre material is made into hemp ropes, and the hemp ropes are woven into a two-dimensionally woven core layer with a negative poisson ratio effect in a crossed manner; the core layer is sewn with the panel; and a sewn preform is placed in a mould cavity of a mould, and the sewn preform is filled with the polylactic acid foam material through a supercritical foaming technology. According to the hemp fibre woven reinforced foam sandwich structure composite material connected by sewing and the preparation method thereof, the advantages of a negative poisson ratio enhanced fibre structure, a sewing process and the polylactic acid foam material are combined; the designability is high; the material is a functional composite material which has the outstanding characteristics of high specific strength, light weight, energy absorption, environment friendliness and the like; and active demands on new materials in the fields, such as national defense, traffic transportation, building and indoor decoration can be met to a certain extent.

Description

technical field [0001] The invention belongs to the technical field of structural composite materials. Background technique [0002] With the development of transportation, intelligent building and safety protection, people have higher and higher requirements on the performance of materials such as light weight, energy absorption and shock absorption, fatigue and environmental protection. Although the polyurethane foam materials widely used at present have the advantages of light weight, heat preservation and good shock absorption performance, they also have disadvantages such as difficulty in recycling, sharp decline in performance when the stress exceeds a certain value, and brittle failure easily. The suture-connected braided composites have the advantages of high specific strength, good stability and fracture toughness, excellent impact resistance, good integrity and resistance to shear failure. Due to the limitation of the performance of the existing polyurethane foam ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/02B32B9/04B32B5/06B32B3/08D04C1/02D01C1/00
CPCD01C1/00D04C1/02B32B3/08B32B5/02B32B5/06B32B5/26D10B2201/01B32B2262/065B32B2307/718B32B2307/56B32B2307/558B32B2307/50B32B2605/00B32B2601/00B32B2571/00B32B2419/00
Inventor 李志刚高智鹏黄坤张杨陈钰曲俊龙
Owner JILIN UNIV
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