钛酸钾晶须-玻璃纤维/苯并噁嗪混杂复合材料的摩擦磨损性能  

Friction and wear properties of potassium titanate whisker-glass fiber/benzoxazine hybrid composites

作　　者：胡晓兰[1] 羊宏山[1] 兰茜[1] 刘刚[2] 李伟东[2] HU Xiaolan YANG Hongshan LAN Xi LIU Gang LI Weidong(Fujian Provincial Key Laboratory of Fire Retardant Materials, College of Materials, Xiamen University, Xiamen 361005, China Science and Technology on Advanced Composites Laboratory, AVIC Composites Center, Beijing Institute of Aeronautical Materials, Beijing 100095, China)

机构地区：[1]厦门大学材料学院,福建省防火阻燃材料重点实验室,厦门361005 [2]中航工业复合材料技术中心,北京航空材料研究院先进复合材料重点实验室,北京100095

出　　处：《复合材料学报》2016年第11期2436-2443,共8页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51103121,51203144);福建省自然科学基金(2015J01222);福建省科技创新平台建设计划(2014H2006);江苏省博士后基金(1402085B);常熟市科技发展计划科技成果转化专项(C2014C2)

摘　　要：利用六钛酸钾晶须(K_2O·6TiO_2)对苯并噁嗪(BOZ)树脂及玻璃纤维/苯并噁嗪(GF/BOZ)复合材料的摩擦磨损性能进行改性,分析了K_2O·6TiO_2/BOZ复合材料以及K_2O·6TiO_2-GF/BOZ混杂复合材料的摩擦磨损性能以及改性机理。结果表明:因K_2O·6TiO_2的加入,K_2O·6TiO_2/BOZ复合材料以及K_2O·6TiO_2-GF/BOZ混杂复合材料的摩擦系数和比磨损率较纯BOZ树脂和GF/BOZ复合材料的明显降低。K_2O·6TiO_2显著减轻了BOZ树脂和GF/BOZ复合材料的摩擦粘着状况,使摩擦系数降低,同时磨粒磨损情况也大为减轻。GF/BOZ复合材料在摩擦过程中摩擦应力通过率先破坏GF和BOZ树脂的界面,进而诱发破坏GF束内、GF束间和层间BOZ树脂,使得GF/BOZ复合材料的摩擦系数比BOZ树脂降低,但比磨损率较BOZ树脂升高,而K_2O·6TiO_2的加入,使K_2O·6TiO_2-GF/BOZ混杂复合材料的比磨损率有效降低。BOZ树脂、GF/BOZ、K_2O·6TiO_2-GF/BOZ 3种材料的摩擦系数和比磨损率分别为0.34和0.66×10^(-6) mm3·(N·m)^(-1),0.19和1.2×10^(-6) mm^3·(N·m)^(-1),0.09和0.69×10^(-6) mm^3·(N·m)^(-1)。Potassium titanate whisker（K_2O·6TiO_2）was utilized to modifiy the friction and wear properties of benzoxazine（BOZ）resin and glass fiber/benzoxzine（GF/BOZ）composites.Friction and wear properties and modification mechanism of K_2O·6TiO_2/BOZ composites and K_2O·6TiO_2-GF/BOZ hybrid composites were analyzed.The results show that the friction coefficients and specific wear rates of K_2O·6TiO_2/BOZ composites and K_2O·6TiO_2-GF/BOZ hybrid composites decrease significantly compared with BOZ resin and GF/BOZ composites due to the addition of K_2O·6TiO_2.K_2O·6TiO_2significantly alleviate the friction adhesion of BOZ resin and GF/BOZ composites and reduce the friction coefficients.Meanwhile the abrasive wear are also alleviated.During the friction process of the GF/BOZ composites,friction stress firstly break the interface between GF and BOZ resin,and then induce the destruction of BOZ resins in and between the GF bundles and GF interlaminations,making the friction coefficient of GF/BOZ composites lower than that of BOZ resin but the specific wear rates higher than that of BOZ resin.With the incorporation of K_2O·6TiO_2,the specific wear rate of K_2O·6TiO_2-GF/BOZ hybrid composites effectively reduces.The friction coefficients and specific wear rates of BOZ resin,GF/BOZ composites and K_2O·6TiO_2-GF/BOZ hybrid composites are 0.34 and 0.66×10-6 mm3·（N·m）-1,0.19 and 1.2×10-6 mm3·（N·m）-1,0.09 and 0.69×10-6 mm3·（N·m）-1,respectively.

关 键 词：苯并噁嗪 玻璃纤维 钛酸钾晶须 摩擦磨损 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]