纳米MoS_(2)修饰SBF增强PPBES复合材料的性能  

Properties of Copoly(phthalazinone ether sulfone)Composites Reinforced by Nano-MoS_(2)Modified Short Basalt Fiber Hybrid

作　　者：孟庆鑫 刘程[1,2] 贾航 乔越 陈友汜 李楠 蹇锡高[1,2] Meng Qingxin;Liu Cheng;Jia Hang;Qiao Yue;ChenYousi;Li Nan;Jian Xigao(School of Chemical Engineering,Dalian University of Technology,Dalian116024,China;Liaoning Province Engineering and Technology Research Center of High-Performance Resins,Dalian116012,China)

机构地区：[1]大连理工大学化工学院,辽宁大连116024 [2]辽宁省高性能树脂工程技术研究中心,辽宁大连116012

出　　处：《工程塑料应用》2022年第7期1-8,共8页Engineering Plastics Application

基　　金：国家重点研发计划项目(2020YFB0311600);中央高校基本科研业务费资助项目(DUT20LAB305)。

摘　　要：设计并制备了一种新型耐磨自润滑增强体--纳米MoS_(2)修饰短切玄武岩纤维(SBF)杂化物(MoS_(2)-SBF),并将之与耐高温含二氮杂萘结构的共聚芳醚砜(PPBES)热塑性树脂共混改性,制备了耐磨自润滑树脂基复合材料(PPBES/MoS_(2)-SBF)。对比了不同组成复合材料的物理学性能、力学性能、耐热性能和耐磨性能。研究了不同环境温度、载荷与滑动速动对PPBES/MoS_(2)-SBF复合材料摩擦学性能的影响。结果表明,PPBES/MoS_(2)-SBF复合材料的硬度、拉伸强度、弯曲强度和压缩强度分别为125.7,103 MPa,145 MPa和173 MPa,显著高于PPBES/MoS_(2)和PPBES/SBF;其玻璃化转变温度为264℃,高于PPBES(250℃),PPBES/MoS_(2)(244℃)和PPBES/SBF(255℃)。在固定载荷为4.5 N、滑动速度为0.3 m/s的条件下,室温环境时PPBES/MoS_(2)-SBF复合材料摩擦系数与磨损率分别为0.335和2.81×10^(-6)mm^(3)/(N·m),比PPBES/SBF分别降低23.3%与66.3%;同时,由于其优异的耐热性能,PPBES/MoS_(2)-SBF在200℃的摩擦系数(0.357)与磨损率[4.17×10^(-6)mm^(3)/(N·m)]比PPBES/SBF分别降低了27.6%与69.0%。A novel antifriction and wear resistance filler,nano-MoS_(2)modified basalt fiber hybrid(MoS_(2)-SBF),was designed and prepared with excellent wear-resistant and self-lubricating properties.Furthermore,the wear-resistant and self-lubricating resin matrix composite(PPBES/MoS_(2)-SBF)were fabricated based on high-performance thermoplastic copoly(phthalazinone ether sulfone)(PPBES)and MoS_(2)-SBF.And the physical properties,mechanical properties,thermal properties,the friction and wear properties of composites with different composition were studied.In addition,the effects of different operating temperature,load and sliding speed on the tribological properties of PPBES/MoS_(2)-SBF composites were discussed.The rockwell hardness,tensile strength,flex-ural strength and compressive strength of PPBES/MoS_(2)-SBF are 125.7,103 MPa,145 MPa and 173 MPa,respectively,which are higher than those of PPBES/MoS_(2)and PPBES/SBF.And the PPBES/MoS_(2)-SBF composite exhibits the glass transition temperature(Tg)of 264℃,which is higher than those of PPBES(250℃),PPBES/MoS_(2)(244℃)and PPBES/SBF(255℃).Under fixed load of 4.5 N and sliding speed of 0.3 m/s,PPBES/MoS_(2)-SBF composite exhibits the lowest friction coefficient and wear rate of 0.335 and 2.81×10^(-6)mm^(3)/(N·m)at room temperature,respectively,which are 23.3%and 66.3%lower than those of PPBES/SBF.Further-more,due to its excellent thermal property,the friction coefficient and wear rate of PPBES/MoS_(2)-SBF are 0.357 and 4.17×10^(-6)mm^(3)/(N·m)at 200°C,respectively,which are decreased by 27.6%and 69.0%compared with those of PPBES/SBF.

关 键 词：玄武岩纤维 纳米MoS_(2) 表面修饰 共聚芳醚砜 耐磨性能 

分 类 号：TQ324[化学工程—合成树脂塑料工业]