氢化丁腈橡胶/超细全硫化粉末丁腈橡胶共混物的结构与性能研究  

Morphology Structure and Properties of Hydrogenated Acrylonitrile Butadiene Rubber/Ultra-Fine Full-Vulcanized Acrylonitrile Butadiene Rubber Powder Blends

作　　者：刘俊杰[1,2] 张立群[3] 刘力[3] 高富强[3] 肖大玲[4] 卢咏来[3] 

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点试验室,北京100029 [2]昊华精细化工总公司,北京100083 [3]北京化工大学教育部纳米材料重点试验室,北京100029 [4]北京橡胶工业设计研究院,北京100039

出　　处：《特种橡胶制品》2009年第3期1-5,共5页Special Purpose Rubber Products

基　　金：国家自然科学基金项目(50503003);北京市科技新星计划(2006A15);霍英东教育基金会高等院校青年教师优选资助课题(104018)

摘　　要：采用熔融共混工艺制备了氢化丁腈橡胶(HNBR)/超细全硫化粉末丁腈橡胶(UFPNBR)共混物,研究了共混物相态结构、动态力学性能、力学性能及老化性能,并与HNBR/NBR共混物作了对比。透射电镜观察表明:在HNBR/UFPNBR体系中,HNBR容易形成连续相,UFPNBR为分散相;在HNBR/NBR体系中容易形成双连续相结构。DMA动态力学性能分析表明:2种共混物都只有一个tanδ峰,且相容性较好。HNBR/UFPNBR共混物在玻璃化转变区的tanδ峰值逐渐降低,而HNBR/NBR体系的tanδ峰值先减小后增大。加入适量的UFPNBR能降低HNBR/UFPNBR共混物的压缩永久变形;与常规共混胶相比,HNBR/UFPNBR具有低脆性温度和良好的耐老化性能,但力学性能略低。A novel hydrogenated aerylonitrile butadiene rubber （HNBR）/uhra-fine full-vulcanized acrylonitrile butadiene rubber （UFPNBR） blends were prepared by melt blending process. The morphology structure, dynamic mechanical properties, static mechanical properties and aging properties of the blends were studied and compared with those of HNBR/NBR blends. TEM showed that HNBR was tending to be continuous phase, while UFPNBR was dispersion phase in HNBR/UFPNBR system, whereas in HNBR/NBR system HNBR was tending to be bi-continuous phase. Dynamic property illustrated by DMTA demonstrated that the two kinds of blends had good compatibility with only one tanδ. In HNBR/UFPNBR system, the value of tanδ decreased gradually with the increasing of the content of UFPNBR However, in HNBR/NBR system, the value of tanδ decreased firstly then in- creased. The mechanical properties results indicated that the compression set of the HNBR/UFPNBR blends could be decreased with adding UFPNBR. To compare with HNBR/NBR system, the HNBR/ UFPNBR had low friability temperature and good aging resistance, but the mechanical properties were slightly worse than that of HNBR/NBR.

关 键 词：超细全硫化粉末丁腈橡胶 氢化丁腈橡胶 相态 

分 类 号：TQ333.7[化学工程—橡胶工业] TQ333.99