A novel polyamide-type cyclophosphazene functionalized rGO/WS2 nanosheets for bismaleimide resin with enhanced mechanical and tribological properties

被引：38

作者：

Chen, Zhengyan ^{[1
]}

Yan, Hongxia ^{[1
]}

Guo, Liulong ^{[1
]}

Li, Lin ^{[1
]}

Yang, Pengfei ^{[1
]}

Liu, Biao ^{[1
]}

机构：

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

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2019年 / 121卷

基金：

中国国家自然科学基金;

关键词：

Graphene/WS2; Cyclophosphazene; Nanocomposites; Mechanical and tribological properties; REDUCED GRAPHENE OXIDE; FLUORINATED GRAPHENE; COMPOSITE COATINGS; FRICTION; WS2; PERFORMANCE; EVOLUTION; MOS2; EXFOLIATION; DISULFIDE;

D O I：

10.1016/j.compositesa.2019.03.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bismaleimide (BMI) composites reinforced with novel polyamide-type cyclophosphazene functionalized rGO/WS2 were successfully fabricated in this paper. RGO/WS2 was firstly functionalized with polyphosphazene (poly(cyclophosphazene-co-branched polyethylenimine)) (PHbP) by a simple precipitation polymerization approach. The microstructure and morphology of as-prepared PHbP@rGO/WS2 were characterized detailedly. The mechanical and tribological properties of virgin BMI and its composites with various amounts of nano-filler (0.2-1.0 wt%) were comparatively investigated. The largest improvements in impact and flexural strengths of BMI composite (21.2 kJ/m(2) and 185.7 MPa, respectively) were observed when the content of PHbP@rGO/WS2 was only 0.8 wt% and 0.6 wt%, increased by 82.8% and 52.0% than those of pure BMI. Furthermore, 0.6 wt% BMI system exhibited the lowest friction coefficient (0.13) and volume wear rate (1.22 x 10(-6) mm(3)/(N.m)), decreased by 69.0% and 92.6% than neat BMI. This is owing to the good dispersibility and self-lubricity of PHbP@rGO/WS2, strong interfacial strength between filler and BMI matrix.

引用

页码：18 / 27

页数：10

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