Impact-resistant composite structure based on uhmwpe secondary hybrid weaving

A composite structure and secondary mixing technology, which is applied in the field of protection and safety, can solve the problems of low single-layer protection effect, affecting the impact resistance effect of composite protection structures, and poor impact resistance effect of two-dimensional fabrics, etc., to achieve excellent impact resistance. Effect of reducing delamination damage and increasing friction

Active Publication Date: 2021-12-31
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the braid structure of the traditional composite protective structure is two-dimensional plain weave or twill weave
However, the area density and thickness of two-dimensional fabrics are quite different from those of the new two-dimensional three-way fabrics and three-dimensional fabrics. Impact resistance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Impact-resistant composite structure based on uhmwpe secondary hybrid weaving
  • Impact-resistant composite structure based on uhmwpe secondary hybrid weaving
  • Impact-resistant composite structure based on uhmwpe secondary hybrid weaving

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The impact-resistant composite structure based on UHMWPE secondary mixed weaving, the impact-resistant composite structure includes composite material plate 1, aluminum alloy frame 2, fiber braid I5 and polyurethane soft rubber, such as figure 1 shown;

[0038] The composite material plate 1 is prepared by injecting epoxy resin into the fiber braid II by using the RTM vacuum glue injection process, and then heat-pressing and cooling, with a thickness of 4.25mm;

[0039] The aluminum alloy frame 2 is a hollow structure made of 2024 aluminum alloy, and a cavity with a length of 96mm, a width of 80mm and a height of 6mm is processed inside;

[0040] The fiber braid I5 and the fiber braid II are prepared by the following method: UHMWPE yarns are used to weave two-dimensional three-directional UHMWPE fabric 3 and three-dimensional orthogonal UHMWPE fabric 4, such as figure 2 and image 3 shown; then the two-dimensional three-directional UHMWPE fabric 3 and the three-dimensi...

Embodiment 2

[0044] The impact-resistant composite structure based on UHMWPE secondary mixed weaving, the impact-resistant composite structure includes composite material plate 1, aluminum alloy frame 2, fiber braid I5 and polyurethane soft rubber, such as Figure 5 shown;

[0045] The composite material plate 1 is prepared by injecting epoxy resin into the fiber braid II by using the RTM vacuum glue injection process, and then cooling by hot pressing, with a thickness of 8.5mm;

[0046] The aluminum alloy frame 2 is a hollow structure made of 2024 aluminum alloy, and two cavities are processed inside, each cavity has a length of 96 mm, a width of 90 mm and a height of 8 mm, and two adjacent cavities The wall thickness between them is 2mm;

[0047] The fiber braid I5 and the fiber braid II are prepared by the following method: UHMWPE yarns are used to weave two-dimensional three-directional UHMWPE fabric 3 and three-dimensional orthogonal UHMWPE fabric 4, such as figure 2 and image 3 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to an impact-resistant composite structure based on UHMWPE secondary mixed weaving, belonging to the technical field of protection and safety. The impact-resistant composite structure includes a composite material board, an aluminum alloy frame, fiber braid I and soft polyurethane glue. Two composite material boards are pasted on the upper and lower surfaces of the aluminum alloy frame, and the fiber braid I is laid on the aluminum The cavity of the frame is injected with polyurethane soft glue for filling and fixing. The present invention overcomes the disadvantages of the existing anti-shock protection structure, such as high mass, inconvenient handling, and possible secondary damage, and adopts the design of the protection structure combining fiber braids, aluminum alloy frames, and composite material plates to achieve the same bulletproof standard. Under the circumstances, the protective structure uses less mass, is easier to handle, reduces time cost, and can also improve protective performance.

Description

technical field [0001] The invention relates to an impact-resistant composite structure based on UHMWPE (Ultra High Molecular Weight Polyethylene Fiber, ultra-high molecular weight polyethylene fiber) secondary mixed weaving, belonging to the technical field of protection and safety. Background technique [0002] Protective equipment used to protect against the impact of projectiles and fragments. The traditional materials are generally metal (such as steel, aluminum, etc.), ceramics, fiber cloth, etc. Metal has the characteristics of heavy weight, high density, and inconvenient to carry. At the same time, the protection of "head-to-head" does not give the projectile too much buffer time. Once the metal is broken, it is easy to cause the back plate to collapse, causing secondary damage from fragments. Although ceramics have high hardness and low density, which can effectively reduce the quality of protective equipment, their easy breakability makes them unable to be used al...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F41H5/04
CPCF41H5/0457
Inventor 黄广炎解亚宸王博张宏
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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