摘要
研究了三元乙丙橡胶(EPDM)/聚丙烯(PP)/高密度聚乙烯(HDPE)动态硫化热塑性弹性体(TPV)的力学性能、流变性能和热性能,并用扫描电镜(SEM)扫描其断面形貌.结果表明,随着HDPE的用量增加,TPV的拉伸强度和撕裂强度以及硬度有所下降;在流变性能测试中TPV体系的最大扭矩逐渐增加到最大值,随后趋于稳定;TPV体系的热失重温度和分解温度与不含HDPE的TPV相比变化不大;扫描电镜图片显示体系中EPDM包裹HDPE的壳-核结构随HDPE用量的增加而增多.
The mechanical properties,rheological properties and thermal properties of high density polyethylene（HDPE）/ethy1ene propy1ene diene monomer（EPDM）/polypropylene（PP） blends were studied,and the microstructure of TPV was investigated by scanning electron microscope（SEM）.Experimental results show that with the increase of HDPE,the tensile strength,tear strength and the shore A hardness of TPV decrease,that the maximum torque increases to the maximum before it gradually becomes stable during the rheologcal test,and that the thermogravimentric temperature and the decomposition temperature hardly change,compared with the TPV without HDPE.SEM analysis shows that the structure of HDPE shell-core wrapped by EPDM increases with the increase of HDPE.
出处
《广东工业大学学报》
CAS
2010年第4期71-75,共5页
Journal of Guangdong University of Technology
关键词
聚丙烯
高密度聚乙烯
三元乙丙橡胶
动态硫化
热塑性弹性体
polypropylene
high density polyethlene
ethy1ene propy1ene diene monomer
dynamic vulcanization
thermoplastic elastomer
