聚烯烃弹性体相对分子质量与特性黏数及熔体流动速率的关系  

Relationship between relative molecular mass,intrinsic viscosity and melt flow rate of polyolefin elastomers

作　　者：金钊 韩书亮 李昊坤 张晓萌[1] 宋文波[1] Jin Zhao;Han Shuliang;Li Haokun;Zhang Xiaomeng;Song Wenbo(Sinopec Beijing Research Institute of Chemical Industry,Beijing 100013,China)

机构地区：[1]中国石化北京化工研究院,北京100013

出　　处：《石油化工》2020年第3期246-249,共4页Petrochemical Technology

摘　　要：采用GPC,黏度测试等方法对不同共聚单体的聚烯烃弹性体试样进行了表征,利用Mark-Houwink公式和修正的泊肃叶定律建立了Mw与特性黏数([η])、熔体流动速率(MFR)的定量关系模型。实验结果表明,对于辛烯含量38%~47%(w)的乙烯/1-辛烯(E-O)共聚物,己烯含量28%~43%(w)的乙烯/1-己烯(E-H)共聚物,丁烯含量22%~45%(w)的乙烯/1-丁烯(E-B)共聚物,由[η]计算Mw的公式分别为:Mw E-O=72.05[η]^1.042,Mw E-H=67.62[η]1.028,Mw E-B=56.15[η]^1.041;由MFR计算Mw的公式分别为:Mw E-O=130.89MFR-0.201,Mw E-H=121.69MFR-0.213,Mw E-B=76.91MFR^-0.233;由MFR计算[η]的公式分别为:[η]E-O=1.773MFR^-0.192,[η]E-H=1.771MFR^-0.207,[η]E-B=1.353MFR^-0.224。GPC,viscosity test and other methods were used to characterize polyolefin elastomer samples with different comonomers.Using Mark-Houwink formula and modified Poiseuille’s law,the quantitative relationship model of Mw with intrinsic viscosity number([η])and melt flow rate(MFR)was established.Experimental results show that,for ethylene/1-octene(E-O)copolymers with octene content of 38%-47%(w),ethylene/1-hexene(E-H)copolymers with hexene content of 28%-43%(w),ethylene/1-butene(E-B)copolymers with butene content of 22%-45%(w),the formulas for calculating Mw from[η]were:Mw E-O=72.05[η]^1.042,Mw E-H=67.62[η]^1.028,Mw E-B=56.15[η]1.041;the formulas for calculating Mw from MFR were:Mw E-O=130.89MFR^-0.201,Mw E-H=121.69MFR^-0.213,Mw E-B=76.91MFR^-0.233;the formulas for calculating[η]from MFR were:[η]E-O=1.773MFR^-0.192,[η]E-H=1.771MFR^-0.207,[η]E-B=1.353MFR^-0.224.

关 键 词：聚烯烃弹性体 相对分子质量 特性黏数 熔体流动速率 

分 类 号：TQ334.2[化学工程—橡胶工业]