过氧化物含量对控制降解丁烯共聚的二元/三元聚丙烯结晶性能的影响  

EFFECT OF PEROXIDE CONTENT ON CRYSTALLIZATION PROPERTIES OF POLYPROPYLENE-BUTENE BINARY AND TERNARY COPOLYMER

作　　者：智瑞 刘艳丽 马金欣 张得栋 Zhi Rui;Liu Yanli;Ma Jinxin;Zhang Dedong(National Energy Group Ningxia Coal Industry Co.,Ltd.,Yinchuan 750004,Ningxia,China)

机构地区：[1]国家能源集团宁夏煤业有限责任公司,宁夏银川750004

出　　处：《精细石油化工》2023年第6期38-42,共5页Speciality Petrochemicals

基　　金：宁夏回族自治区重点研发计划项目(2020BCH01002)。

摘　　要：研究了丙丁二元聚丙烯粒料DY-W0723和乙丙丁三元共聚聚丙烯C5908加入过氧化物降解剂后的结晶性能,对试样的熔融结晶、相对分子质量及相对分子质量分布,以及晶型进行了测试。结果表明,加入质量分数为0.02%~0.08%的过氧化物后,二元三元PP的结晶性能均发生了改变,DY-W0723F结晶度下降范围为0.9%~7.5%,C5908下降范围为1.7%~6.48%;二者的晶型仍然以α晶型为主,内部结构发生了变化。The changes in crystallinity of propylene-butadiene binary polypropylene particles(DY-W0723)and ethylene-propylene-butadiene ternary polypropylene copolymer(C5908)before and after the addition of peroxide degrader were investigated through the testing of melt crystallization,relative molecular weight and relative molecular weight distribution,and sample crystal morphology.The data results show that the crystallization performance of binary and ternary PP changed after adding peroxide with a mass fraction of 0.02%-0.08%,and the crystallinity of DY-W0723F and C5908 decreased by 0.9%-7.5%and 1.7%-6.48%,respectively.Although the crystallinity of both DY-W0723F and C5908 is still dominated byα-crystalline type,the internal structure has been changed.

关 键 词：过氧化物 二元聚丙烯 三元聚丙烯 结晶性能 

分 类 号：TQ34[化学工程—化纤工业] O611.62[理学—无机化学]