协同改性对环氧树脂耐磨损及热学性能的影响  

Effect of Synergistic Modification on Wear Resistance and Thermal Properties of Epoxy Resin

作　　者：张东辉 吴华伟 王春红[1] 鹿超[1] 王定[1] Zhang Donghui;Wu Huawei;Wang Chunhong;Lu Chao;Wang Ding(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;College of Engineering and Technology,Jiyang college of Zhejiang A&F University,Shaoxing 312000,China)

机构地区：[1]天津工业大学纺织科学与工程学院,天津300387 [2]浙江农林大学暨阳学院工程技术学院,浙江绍兴311800

出　　处：《工程塑料应用》2022年第10期107-113,共7页Engineering Plastics Application

基　　金：国家自然科学基金项目(11802205)。

摘　　要：为了探究更加环保和低成本的耐磨环氧(EP)材料,将竹纤维(BF)和碳纤维(CF)两种纤维与碳纳米管(CNTs)和纳米二氧化硅粒子(nano-SiO_(2))两种无机纳米填料组合后分组,分别制备了EP树脂基耐磨复合材料。研究纤维和纳米填料的协同改性对各组样品磨损性能的影响,采用M-2000A型磨损实验机和动态热机械分析仪分析了不同组在低速轻载和高速重载下的体积磨损及玻璃化转变温度(T_(g))。结果表明,纳米填料对T_(g)的影响较大,且随着T_(g)的升高,EP的体积磨损逐渐变小。EP/5%nano-SiO_(2)/2%BF的T_(g)为124℃,改性效果好,相较于纯EP提升了11℃。同等条件下,高速重载下的摩擦系数要低于低速轻载。在改善EP的体积磨损方面,低速轻载条件下,相较于纯EP的体积磨损,EP/5%nano-SiO_(2)/2%BF下降了19.24%,EP/0.5%CNTs/1%CF下降了47.75%,EP/1%CF体积磨损下降了65.68%,CF的改性效果最好;高速重载条件下,相较于纯EP的体积磨损,EP/1%CF下降了74.09%,EP/5%nano-SiO_(2)/2%BF下降了75.3%,EP/0.5%CNTs/1%CF下降了82.05%,纳米填料和纤维的协同改性效果较好,尤其nano-SiO_(2)和BF的改性效果超过了CF。In order to develop more environmentally friendly and low-cost wear-resistant epoxy resin(EP) materials,two types of fibers,bamboo fibers(BF) and carbon fibers(CF),and two inorganic nanoparticles,carbon nanotubes(CNTs) and nanosilica particles(nano-SiO_(2)) were selected as reinforcement.Epoxy resin-based composites with various strategies of reinforcement were prepared.The wear volume and glass transition temperature(T_(g)) under low speed light load and high speed heavy load were analyzed using M-2000A wear tester and dynamic mechanical thermal analyser.The results show that the nano filler have a great influence on T_(g),and the volume wear of EP decreases with the increase of T_(g).EP/5% nano-SiO_(2)/2% BF shows the best modification effect with a T_(g)of 124℃,which is 11℃ higher than that of pure EP.Under the same conditions,the friction coefficient under high speed and heavy load is lower than that under low speed and light load.Compared with pure EP,volume wear rate of the EP reinforced with 5% nano-SiO_(2)/2% BF is decreased by 19.24%,EP/0.5% CNTs/1% CF decreased by 47.75%,and 1% CF/EP decreased by 65.68% under low speed and light load.The modification effect of CF is the best.Under high-speed and heavy-load conditions,compared with the volume wear of pure EP,EP/1%CF is decreased by 74.09%,EP/5% nano-SiO_(2)/2%BF is decreased by 75.3%,and EP/0.5%CNTs/1%CF is decreased by 82.05%.The synergistic modification effect of nano filler and fibers is better.In particular,the modification effect of nano-SiO_(2)and BF surpasses that of CF.

关 键 词：环氧树脂 磨损 协同改性 纤维 纳米填料 

分 类 号：TB332[一般工业技术—材料科学与工程]