Impact-resistant composite structure based on UHMWPE (ultra high molecular weight polyethylene fiber) secondary mixed weaving
A composite structure and secondary mixing technology, which is applied to the structure of armor plates, armor, protective equipment, etc., can solve the problem of low single-layer protection effect, poor impact resistance effect of two-dimensional fabrics, and impact impact resistance effect of composite protective structures, etc. problem, achieve the effect of preventing the penetration of fiber braids, excellent impact resistance, and reducing delamination damage
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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 4.25 mm;
[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-dimens...
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 ...
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