3 years ago

Effect of polyphenylene sulfide containing amino unit on thermal and mechanical properties of polyphenylene sulfide/glass fiber composites

Effect of polyphenylene sulfide containing amino unit on thermal and mechanical properties of polyphenylene sulfide/glass fiber composites
Ting Yu, Dong-Xia Xu, Jia-Chao Yang, Xiao-Jun Wang, Hao-Hao Ren, Jie Yang, Gang Zhang
Three kinds of high-molecular-weight compatibilizers [copoly(1,4-phenylene sulfide)-poly(2,5-phenylene sulfide amine)] (PPS-NH2) containing different proportions of amino units in the side chain) were synthesized by the reaction of dihalogenated monomer and sodium sulfide via nucleophilic substitution polymerization under high pressure. The intrinsic viscosity of the obtained copolymers was 0.354–0.489 dL/g and they were found to have good thermal performance with melting point (Tm) of 271.3–281.0 °C and initial degradation temperature (Td) of 490.0–495.7 °C. There was an excellent physical compatibility between PPS-NH2 and the pure industrial PPS. The results of dynamic mechanical analysis and macro- and micromechanical test showed that the selective compatibilizer PPS-NH2 (1.0) (1.0% mol aminated ratio) can improve the mechanical and interfacial properties of polyphenylene sulfide/glass fiber (PPS/GF) composite. The macro-optimal tensile strength, Young's modulus, bending strength, and notched impact strength of 5%PPS-NH2 (1.0)/PPS/GF composite raised up to 141 MPa, 1.98 GPa, 203 MPa, and 6.15 kJ/m2, which increased 12.8%, 9.4%, 4.1%, and 13.8%, respectively, comparing with the pure PPS/GF composite (125 MPa, 1.81 GPa, 195 MPa, and 5.40 kJ/m2, respectively). © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 135, 45804.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/app.45804

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