Investigation of mechanical and frictional performance for bismaleimide composites reinforced by hyperbranched polysiloxane-cyclophosphazene functionalized rGO/MoS2

JOURNAL OF ALLOYS AND COMPOUNDS

卷:823

Article

Chen, Zhengyan¹  Yan, Hongxia¹  Guo, Liulong¹  Feng, Yuanbo¹  Li, Lin¹  Feng, Weixu¹  Yang, Pengfei¹  Liu, Biao¹  Liu, Taiyufei¹  Yuan, Junshan¹ 

[1] Northwestern Polytech Univ, Sch Nat & Appl Sci, MOE Key Lab Space Appl Phys & Chem, Shaanxi Key Lab Macromol Sci & Technol, Xian 710129, Peoples R China

关键词: Hyperbranched polysiloxane;    Graphene-like MoS2;    Mechanical performance;    Frictional behavior;   

DOI  :  10.1016/j.jallcom.2020.153837

来源: Elsevier

【 摘 要 】

In this article, graphene/MoS2 nanosheets (rGO/MoS2) functionalized by a novel hyperbranched polysiloxane (HBPSi) containing cyclophosphazene (HBPSi-CPP) were synthesized by a precipitation polymerization approach. We doped different loading amounts of HBPSi-CPP@rGO/MoS2 as solid lubricating filler into bismaleimide (BMI) resin to produce HBPSi-CPP@rGO/MoS2/BMI hybrid composite materials. The morphology and structure of HBPSi-CPP@rGO/MoS2 as well as the mechanical and tribological properties of BMI composites were systematically investigated. The results exhibited that 0.8 wt% BMI system got the peak values of the bending and impact strengths (187.8 MPa and 22.4 kJ/m(2)), which are the highest values of rGO-based materials for BMI matrix in open literatures. Moreover, for 0.4 wt% BMI sample, its average frictional coefficient and abrasion rate get the minimum values of 0.26 and 1.6 x 10(-6) mm(3)/(N.m), separately. This is attributed to the good dispersibility and self-lubrication of HBPSi-CPP@rGO/MoS2 as well as the improved inorganic-organic compatibility between HBPSi-CPP@rGO/MoS2 nanomaterial and BMI resin. (C) 2020 Elsevier B.V. All rights reserved.

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