摘要
与硫磺硫化、过氧化物硫化相比,电子束辐射硫化(辐射剂量200kGy)的SBR/SiO2复合材料具有最大的拉伸强度和撕裂强度。核磁交联密度测定仪测试表明,电子束辐射硫化、硫磺硫化、过氧化物硫化的SBR/SiO2复合材料的交联密度分别为15.6×10-5mol/cm3、11.7×10-5mol/cm3和24.4×10-5mol/cm3;随着交联密度的增大,SBR/SiO2复合材料的硬度增大,扯断伸长率减小。O3老化试验表明,电子束辐射硫化SBR/SiO2复合材料具有优良的耐臭氧老化性能,O3老化后的拉伸强度和扯断伸长率下降幅度很小;硫磺硫化SBR/SiO2复合材料的耐臭氧老化性能较差,O3老化后的拉伸强度和扯断伸长率大幅度下降。
Novel NMR crosslink-density spectrometer measured the crosslink density of three SBR/SiO2 composites vulcanized with electron beam irradiation （irradiation dosage： 200 kGy）, sulfur and peroxide vulcanized is 15.6, 11.7 and 24.4×10^-5mol/cm^3, respectively. Elongation at break of those SBR/SiO2 composites decreases with the increase of erosslink density. Comparing with the two SBR/SiO2 composites vulcanized respectively with sulfur and peroxide, electron beam irradiated SBR/SiO2 composites has better tensile strength, tear strength and ozone resistance. Suffering from ozone aging, electric beam irradiated SBR/SiO2 composites have little decrease in tensile strength and elongation at break while those of sulfur vulcanized SBR/SiO2 composites remarkably decrease.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2009年第5期154-156,共3页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(50873049)
山东省中青年科学家科研奖励基金(2007BS04038)
山东省教育厅科技计划项目(J07YA12)
青岛科技大学博士启动基金
