纤维长度对无石棉密封垫片压缩回弹性能的影响  

Effect of Fiber Length on Compressibility and Resilience Properties of Non-asbestos Sealing Gasket

作　　者：田硕[1] 刘美红[1] 冯红飞[1] 焦健[1] 

机构地区：[1]昆明理工大学机电工程学院,昆明650500

出　　处：《机械工程材料》2017年第9期53-56,67,共5页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(51165014);云南省科技计划项目(2012FB130);云南省教育厅科学研究基金资助项目(2012Y540)

摘　　要：通过鲍尔筛分仪对不同长度的纤维素纤维、芳纶浆粕纤维和矿物棉纤维进行筛分并测其重均纤维长度,然后采用U8(43)均匀试验法设计对抄取法制备的无石棉密封垫片进行压缩回弹性能试验,通过多元线性回归方法研究了压缩率和回弹率与纤维长度的关系,同时利用得到的回归方程对垫片的压缩回弹性能进行预测,并与试验值进行对比。结果表明:纤维长度对压缩回弹性能有显著的影响;随着纤维长度的增加,垫片的压缩率逐渐增大,回弹率逐渐减小,其中芳纶浆粕纤维长度的影响最为明显;利用回归方程得到垫片压缩回弹性能的预测值与试验值比较接近。Different length of cellulose fiber,PPTA-pulp fiber and mineral wool fiber was sieved by BauerMcNett classifier and the weight average fiber length was measured.The compressibility and resilience properties of non-asbestos sealing gasket made by beater-addition process were tested by U_8（4~3） homogenous experimental design.The relationship of compressibility ratio and resilience ratio and fiber length was studied by multi-linear regression which was used to predict compressibility and resilience properties.The predicted values were compared with experimental values.The results show that fiber length had a significant effect on compressibility and resilience properties.The compressibility ratio increased and resilience ratio decreased with increase of fiber length.The effect of fiber length of PPTA-pulp was the most significant.The predicted values by regression equation were approximately equal to experimental values.

关 键 词：无石棉密封垫片 纤维长度 压缩回弹性能 

分 类 号：TB42[一般工业技术]