成型工艺对聚氨酯合成轨枕性能影响的研究  

STUDY ON THE INFLUENCE OF MOLDING TECHNOLOGY ON THE PERFORMANCE OF POLYURETHANE SLEEPER

作　　者：魏建国 李帅旗 马端人 柳佳 胡俊 WEI Jian-guo;LI Shuai-qi;MA Duan-ren;LIU Jia(Luoyang CBS New Material Technology Co,Ltd,Luoyang 471000,China)

机构地区：[1]洛阳科博思新材料科技有限公司,洛阳471000 [2]不详

出　　处：《复合材料科学与工程》2020年第11期111-115,128,共6页Composites Science and Engineering

摘　　要：本文研究了排纱方式、固化温度、固化时间等因素对纤维增强聚氨酯合成轨枕的压缩性能和道钉抗拔强度的影响。结果表明:排纱方式1的密度最接近设计值,其压缩强度及压缩模量均优于其他排纱方式,其道钉拉拔强度最高且均匀性最好;在55℃~63℃,固化时间在60 min以上的产品力学性能较好,压缩强度可达110 MPa左右,道钉抗拔强度(Ф22)在55 kN以上。In this paper,the effects of yarn arrangement,curing temperature,curing time and other factors on the compressive properties and the pull-out strength of spikes of fiber-reinforced polyurethane synthetic sleepers are studied.It is shown that the density of yarn arrangement 1 is the closest to the design value,its compressive strength and modulus of compression are superior to other yarn arrangement methods,and its pull-out strength is the highest and its uniformity is the best.At about 55℃~63℃,the curing time is in the range of 55℃~63℃.The mechanical properties of the product are better after 60 minutes,the compressive strength is about 110 MPa,and the pull-out strength(Ф22)of the spike is more than 55 kN.

关 键 词：硬质聚氨酯泡沫塑料 复合材料 玻璃纤维增强 

分 类 号：TB332[一般工业技术—材料科学与工程]