纤维长度对无石棉密封垫片压缩回弹性能的影响
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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.
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.
引文
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[3]谭西顺.威胁人类健康的杀手-石棉[J].劳动保护,2005(3):96.
[4]谢苏江,蔡仁良.无石棉垫片材料基本性能的研究进展[J].石油和化工设备,2003,6(6):85-87.
[5]刘美红,黎振华,李自良,等.胶乳抄取无石棉混杂纤维增强缠绕垫片的性能[J].机械工程材料,2007,31(5):45-47.
[6]胡开堂.纸页的结构与性能[M].北京:中国轻工业出版社,2006:1-3.
[7]胡宏玖,谢苏江,刘美红.非石棉垫片复合材料设计与性能[M].上海:上海大学出版社,2006:206-208.
[8]刘文卿.实验设计[M].北京:清华大学出版社,2005:25-65.
[9]刘洪斌,董荣业.纤维尺寸和强度对纸页性能的影响[J].造纸科学与技术,2004,23(4):16-19.
[10]林赛君.纸浆筛分的方法与生产应用[J].造纸科学与技术,2007,26(3):44-46.
[11]刘美红.无石棉胶乳抄取纸的制备及性能研究[D].上海:华东理工大学,2004:42-43.
[12]杜鹏,李正现,陆健.无石棉密封垫片的制备工艺及性能评价方法简介[J].内燃机与动力装置,2014,31(2):54-58.
[13]谢炎福,周芬娜,张永耀,等.SPSS软件用于分光光度法的数据处理[J].理化检验-化学分册,2009,45(8):916-921.