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| Anti-penetration performance of graphene oxide/ceramic ball reinforced polyurethane SPS composite plate |
| ZOU Guangping1, WU Songyang1, YANG Liu2, CHANG Zhongliang1, WANG Xuan1 |
1.College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China;
2.The 4th Construction Co., Ltd., China Electronic System Engineering, Shijiazhuang 050000, China |
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Abstract The addition of inorganic filler can greatly enhance the performance of polyurethane, so that the performance of the composite structure with polyurethane as the core layer can be improved. In order to obtain SPS composite plates with better penetration resistance, graphene oxide reinforced polyurethane elastomers were obtained by in-situ polymerization and tested under uniaxial tension and compression. On this basis, ceramic balls were added as a new reinforcing phase, and SPS composite structures with graphene reinforced polyurethane and graphene / ceramic balls reinforced polyurethane as the core layer were prepared with Q235 steel as the panel, Through the penetration experiment of steel ball projectile and LS-DYNA numerical simulation, the ballistic limit velocities of the two composite plates are obtained, and their energy absorption characteristics and damage mechanism are analyzed. The results show that when the mass fraction of graphene is 0.4wt%, the compressive modulus of graphene reinforced polyurethane is increased by 32.4% and the tensile strength is increased by 42.6% compared with pure polyurethane. After adding ceramic balls, the ballistic limit velocity of the composite plate increased by 20.8%. The fragmentation and offset of ceramic balls interrupted the propagation of radial stress, and the ceramic balls beyond the size of bullets were relatively complete.
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Received: 16 May 2022
Published: 15 July 2023
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