Effect of polyurea layer on ballistic behavior of ceramic/metal armor

Peng, Si Yuan; Liu, Yan; Yan, Junbo; Bai, Fan; Shi, Zhenqing; Huang, Fenglei

doi:10.1016/j.istruc.2023.01.089

Cited by 15 publications

(6 citation statements)

References 62 publications

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“…The results were verified using the improved Florence equation and numerical simulation was used to design the optimal thickness of each layer in the ceramic-polyurethane-aluminum composite armour [112]. The application of polyurea can effectively enhance the protective performance of ceramic/metal armour [113,114]. G. Zou et al [115] designed a composite plate that consists of alumina ceramic/polyurea elastomer (PUE)/glass fiber reinforced plastic (GFRP) with a surface density of 3.6 g/cm 2 .…”

Section: Military and Defensementioning

confidence: 92%

Recent Developments in Polyurea Research for Enhanced Impact Penetration Resistance and Blast Mitigation

Wang,

Ding,

Lin

et al. 2024

Polymers

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Polyurea has gained significant attention in recent years as a functional polymer material, specifically regarding blast and impact protection. The molecular structure of polyurea is characterized by the rapid reaction between isocyanate and the terminal amine component, and forms an elastomeric copolymer that enhances substrate protection against blast impact and fragmentation penetration. At the nanoscale, a phase-separated microstructure emerges, with dispersed hard segment microregions within a continuous matrix of soft segments. This unique microstructure contributes to the remarkable mechanical properties of polyurea. To maximize these properties, it is crucial to analyze the molecular structure and explore methods like formulation optimization and the incorporation of reinforcing materials or fibers. Current research efforts in polyurea applications for protective purposes primarily concentrate on construction, infrastructure, military, transportation and industrial products and facilities. Future research directions should encompass deliberate formulation design and modification, systematic exploration of factors influencing protective performance across various applications and the integration of numerical simulations and experiments to reveal the protective mechanisms of polyurea. This paper provides an extensive literature review that specifically examines the utilization of polyurea for blast and impact protection. It encompasses discussions on material optimization, protective mechanisms and its applications in blast and impact protection.

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Section: Military and Defensementioning

confidence: 92%

Recent Developments in Polyurea Research for Enhanced Impact Penetration Resistance and Blast Mitigation

Wang,

Ding,

Lin

et al. 2024

Polymers

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“…Moreover, polyurea is a widely used polymer, which exhibits excellent impact resistance performance via abundant and strong hydrogen bonds. − Such urea-based polymers have attracted considerable attention from an industrial perspective in the field of protection and bullet proof and antiexplosion materials. − For example, He et al fabricated a bioinspired cellular ceramic structure/polyurea dual-phase architecture, whose energy-absorbing ability is 50.34 times that of a cellular ceramic structure without polyurea; Dragonshield BC (Specialty Polymers Inc., USA) is an ultrahigh-strength polyurea elastomer product, which is used as a coating material on armored vehicles to mitigate blast and protect soldiers from fragment injury; XS-350 (LINE-X, USA) is an aromatic spray polyurea elastomer product, which has been applied as a protective layer in boats, farm equipment, construction equipment, etc. , Therefore, polyurea provides a dynamic supramolecular network for mouthguards to possess shock absorption ability thereby suiting the current processing method.…”

Section: Introductionmentioning

confidence: 99%

A Shear-Stiffening Mouthguard with Excellent Shock Absorption Capability and Remoldability via a Dynamic Dual Network

Zhou,

Wu,

Pan

et al. 2024

ACS Appl. Bio Mater.

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Mouthguards are used to reduce injuries and the probability of them to orofacial tissues when impacted during sports. However, the usage of a mouthguard is low due to the discomfort caused by the thickness of the mouthguard. Herein, we have constructed a dynamic dual network to fabricate a shear-stiffening mouthguard with remoldability, which are called remoldable shear-stiffening mouthguards (RSSMs). Based on diboron/oxygen dative bonds, RSSMs show a shearstiffening effect and excellent shock absorption ability, which can absorb more than 90% of the energy of a blank. Even reducing the thickness to half, RSSMs can reduce approximately 25% of the transmitted force and elongate by about 1.6-fold the buffer time compared to commercial mouthguard materials (Erkoflex and Erkoloc-pro). What is more, owing to the dynamic dual network, RSSMs show good remolding performance with unchanged shear-stiffening behavior and impact resistance, which conforms to the existing vacuum thermoforming mode. In addition, RSSMs exhibit stability in artificial saliva and biocompatibility. In conclusion, this work will broaden the range of mouthguard materials and offer a platform to apply shear-stiffening materials to biomedical applications and soft safeguarding devices.

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“…It also has an adjustable elastic modulus, tensile strength, and ductility [12]. The strong adhesion to different material interfaces has significantly promoted its application in the protective performance enhancement of concrete slabs [13,14], metal plates [15][16][17], ceramic panels [18,19], porous materials [20,21] and fiber-reinforced composite structures [22][23][24] to blast and impact. These studies have indicated that polyurea layers can not only restrain metal plate deformation with their high dynamic strength and toughness but also increase the energy absorption capacity through glass transition and large ductile deformation [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

“…Also, spraying polyurea coating on the 3D auxetic lattice can increase the elastic ultimate stress of the rods due to the strong wrapping effect. The coating layer distributed stress more evenly throughout the core layer, thus leading to higher energy absorption performance [19].…”

Section: Introductionmentioning

confidence: 99%

Strengthening Mechanism of Polyurea to Anti-Penetration Performance of Spherical Cell Porous Aluminum

Fan,

Guo,

Cui

et al. 2024

Polymers

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A composite structure containing a metallic skeleton and polyurea elastomer interpenetrating phase was fabricated, and its anti-penetration performance for low-velocity large mass fragments was experimentally studied. The protection capacity of three polyurea was compared based on the penetration resistance force measurement. Results show that the polyurea coating layer at the backside improves the performance of the polyurea-filled spherical cell porous aluminum (SCPA) plate due to its backside support effect and phase transition effect, which are accompanied by a large amount of energy absorption. The frontal-side-coated polyurea layer failed to shear and provided a very limited strengthening effect on the penetration resistance of the interpenetrating phase composite panel. The filling polyurea in SCPA increased the damage area and formed a compression cone for the backside coating layer, leading to a significant stress diffusion effect. The anti-penetration performance was synergistically improved by the plug block effect of the interpenetrating phase composite and the backside support effect of the PU coating layer. Compared with SCPA, the initial impact failure strength and the average resistance force of the composite plate were improved by 120–200% and 108–274%, respectively.

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Effect of polyurea layer on ballistic behavior of ceramic/metal armor

Cited by 15 publications

References 62 publications

Recent Developments in Polyurea Research for Enhanced Impact Penetration Resistance and Blast Mitigation

Recent Developments in Polyurea Research for Enhanced Impact Penetration Resistance and Blast Mitigation

A Shear-Stiffening Mouthguard with Excellent Shock Absorption Capability and Remoldability via a Dynamic Dual Network

Strengthening Mechanism of Polyurea to Anti-Penetration Performance of Spherical Cell Porous Aluminum

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