A hybrid gradient fiber composite bulletproof laminate

By using interlaced aramid fiber cloth and ultra-high molecular weight polyethylene fiber nonwoven cloth in the composite target plate, and setting a waterborne polyurethane layer with a three-dimensional cross-linked network structure in between, the problem of low interfacial bonding strength is solved, and better ballistic performance is achieved.

CN224426792UActive Publication Date: 2026-06-30WEAPON EQUIP RES INST OF CHINA NAT WEAPON EQUIP GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WEAPON EQUIP RES INST OF CHINA NAT WEAPON EQUIP GRP
Filing Date
2025-05-22
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing composite material target plates suffer from low interfacial bonding strength and severe interfacial delamination due to the different resin systems used for different fibers, which affects ballistic performance.

Method used

The method employs interlaced aramid fiber fabric layers and ultra-high molecular weight polyethylene fiber non-woven fabric layers, with a waterborne polyurethane layer having a three-dimensional cross-linked network structure between adjacent layers to enhance the interfacial bonding strength.

Benefits of technology

It improves the interfacial adhesion between aramid fibers and ultra-high molecular weight polyethylene fibers, avoids interfacial delamination, enhances energy absorption and blunt impact resistance, and significantly improves ballistic performance.

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Abstract

This utility model discloses a hybrid gradient fiber composite bulletproof laminate, belonging to the technical field of composite material target plates. The hybrid gradient fiber composite bulletproof laminate comprises alternating layers of aramid fiber fabric and ultra-high molecular weight polyethylene fiber non-woven fabric; a water-based polyurethane layer with a three-dimensional cross-linked network structure is disposed between adjacent aramid fiber fabric layers and ultra-high molecular weight polyethylene fiber non-woven fabric layers. The interface bonding between the aramid fiber fabric and the ultra-high molecular weight polyethylene non-woven fabric in the hybrid gradient fiber composite bulletproof laminate of this utility model is reliable, exhibiting excellent energy absorption and blunt impact resistance, and providing good bulletproof performance.
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