热分析评价EPS30R的性能

Evaluate the property of EPS30R by thermal analysis

采用热重分析法测试1#和2#EPS30R的残存量分别为1.13%和0.59%,这些残留物是生产过程中使用的金属催化剂和填充物的残留。差示扫描量热法和动态热机械分析法测试结果显示,1#和2#样品的熔融半峰宽分别为11.4℃和16.7℃,1#样品非晶乙丙橡胶相具有更低的玻璃化转变温度和较窄的转变峰宽,由此推测,1#样品有相对低的分子量,分子量分布较窄,GPC结果显示,1#和2#样品的MN分别为9.95万和10.42万,多分散指数(D)分别为3.69和3.89;1#和2#样的结晶度分别为42.6%和40.8%,在常温区1#样品的储能模量比2#样品高,1#和2#的弯曲弹性模量分别为1 037 MPa和972 MPa,热分析表征与力学性能测试结果一致。

The residual of EPS30R were measured by thermogravimetry, the values of 1^# and 2^# EPS30R were 1.13% ,0.59% by means of differential scanning calorimeter or dynamic mechanical analyses, the results show that a half-peak-width of melting of 1^# and 2^# EPS30R were 11.4,16.7 ℃. 1^ # EPS30R has lower relative molecular mass and narrower distribution of relative molecular mass. The MN of ltand 2^# EPS30R were 9.95 × 10^4, 10.42×10^4 by GPC, the values of polydispersity index were 3.69,3.89. The crystallinity of sample 1^# and 2^# were 42.6% ,40.8% , 1^# EPS30R has higher storage modulus at room temperature, bending modulus of them were 1 037,972 MPa, the attribute of thermal analysis is consistent with the test result of typical mechanical property .