Abstract
Based on our previous work, a new thermosetting resin system, named PCH, has been developed to be used as the matrix of ultrahigh-molecular-weight polyethylene (UHMWPE) fiber composites in order to get improved interface bond and mechanical properties. In this work, UHMWPE fiber/PCH composites with different ratios of PCH/styrene were prepared and the impact resistance, dynamic mechanical properties, and dielectric properties of UHMWPE fiber/PCH composites were investigated. The interlaminar shear failure characteristic of composites was analyzed by introducing a series of energy indexes indicating the energy absorbed in interlaminar shear failure process, which show good correlation with interlaminar shear strength of samples. UHMWPE fiber/PCH composites have excellent impact property, and the impact strength can reach 140.8 kJ/m2 as the ratio of PCH/styrene is 60/40. Dynamic mechanical analysis showed that UHMWPE fiber/PCH composites have high storage moduli (E′) and low dissipation factor (tan δ) and these properties are influenced by the interfacial adhesion. The dielectric property test demonstrated that UHMWPE fiber/PCH composites have low dielectric constant (2.20 < ε′ < 2.55) and dielectric loss tangent (1.50 × 10−3 < tan δ < 1.81 × 10−2) and show good stability in a large range of frequency and temperature.
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Support by the National Natural Science Foundation of China (Grant No. 50773019) is gratefully acknowledged.
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Zhang, X., Wang, Y. & Cheng, S. Properties of UHMWPE fiber-reinforced composites. Polym. Bull. 70, 821–835 (2013). https://doi.org/10.1007/s00289-012-0873-0
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DOI: https://doi.org/10.1007/s00289-012-0873-0