摘要
采用动态硫化的方法制备了三元乙丙橡胶(EPDM)/高聚合度聚氯乙烯(HPVC)热塑性弹性体。考察了PVC聚合度、橡塑比、增塑剂添加量、硫化剂用量(质量分数)及不同促进剂配比对体系性能影响,研究了动态硫化工艺条件(硫化时间和硫化温度)对体系性能的影响。实验结果表明:采用动态硫化方法,选用HPVC-2500、橡塑比为30/70、DOP用量为35份、硫化用量为0.4份及合适促进体系,可以制得性能优良的EPDM/HPVC热塑性弹性体,拉伸强度能达到15.18 MPa,断裂伸长率能达到544%。
The EPDM/HPVC thermoplastic elastomer with excellent properties was prepared by dynamic vulcanization.Effects of polymerization degree of PVC,ratio of rubber to plastics,dosage of plasticizer,sulfur content,curing accelerant content on mechanical properties of EPDM/HPVC TPEs were investigated.At the same time,influences of curing conditions on properties of the system were studied,including curing temperature and curing time.Experimental results indicate that the EPDM/HPVC TPEs prepared by dynamic vulcanization has excellent mechanical properties,the tensile strength of the system is up to 15.18 MPa,the elongation at break of the system can reach to 544%.
出处
《当代化工》
CAS
2010年第2期138-140,共3页
Contemporary Chemical Industry
