Coating for explosion-proof vehicle

By using a three-layer composite coating, the technical bottlenecks of explosion-proof vehicle coatings in terms of blast wave resistance, flame retardancy, and environmental adaptability have been solved. This has enabled efficient energy dissipation of blast shock waves, fragmentation protection, and self-cleaning of chemical contaminants, thereby improving the vehicle's protective performance and battlefield adaptability.

CN121673908APending Publication Date: 2026-03-17XIAMEN JINGBI IND CO LTD
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Patent Information

Application Number
CN202511080918.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-04
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

Existing explosion-proof vehicle coatings have significant technical bottlenecks in terms of blast wave resistance, flame retardancy, and environmental adaptability. They cannot balance adhesion and impact resistance, their single-layer structure is insufficient to cope with complex threats, their limited functionality leads to poor battlefield adaptability, and they lack chemical protection and self-cleaning capabilities.

Method used

The coating employs a three-layer composite structure, comprising an adhesion underlayer, an energy-absorbing intermediate layer, and an impact-resistant outer layer. The adhesion underlayer is composed of epoxy resin, flake zinc powder, and flake mica powder. The energy-absorbing intermediate layer is a composite of shear-thickening fluid and aramid short-cut fibers. The impact-resistant outer layer contains polyurea elastomer and gradient-distributed ceramic microspheres. Combined with a specific flame-retardant system and a hydrophobic functional layer, it forms a layered shielding structure and a multi-level energy dissipation path.

Benefits of technology

It achieves all-dimensional protection against blast shock waves, fragment penetration, flame combustion, and battlefield corrosive environments while maintaining lightweight design. It enhances the interfacial bonding strength between the coating and the vehicle body, efficiently dissipates impact energy, deflects fragments in multiple stages, and simultaneously solves the problems of flame spread suppression and self-cleaning of chemical contaminants.

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Abstract

The invention belongs to the technical field of vehicle protection materials, and particularly relates to a coating for an explosion-proof vehicle. The coating is composed of an adhesion bottom layer, an energy-absorbing middle layer and an anti-impact outer layer, wherein the adhesion bottom layer contains epoxy resin and flaky zinc powder / mica powder, and a laminated shielding structure is formed to improve the adhesion force to be larger than or equal to 8 MPa; the energy-absorbing middle layer is a composite material of modified nano silicon dioxide / polyethylene glycol-based STF and silanized aramid fiber, the viscosity of the energy-absorbing middle layer is sharply increased by more than 50 times at the strain rate of 500s <-1 >, and 65% of explosion impact energy can be absorbed; the anti-impact outer layer adopts a polyurea elastomer to wrap gradient distribution silicon carbide microspheres, pyramid-shaped protrusions are designed on the surface, the fragment defense speed reaches 430 m / s, and the shock wave reflection dispersion is increased by 50%. The whole anti-explosion coating passes UL94V-0 certification through a synergistic flame-retardant system, the chemical protection and self-cleaning capacity is improved through a super-hydrophobic surface layer, and the problems that a traditional anti-explosion coating is poor in adhesive force, weak in composite threat resistance and insufficient in environmental adaptability are solved.
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