Originally posted by 落叶飘飘 at 2010-09-23 12:45:11:
曲线B的不是很明显啊  那要作切线  才能得出啊  现在只能看个大概

Originally posted by haibo0520 at 2010-09-23 13:11:10:
看不懂。。。。。。。。。
是结晶性的聚合物吗

Originally posted by duqiulia at 2010-09-24 09:44:14:

那能否请教一下ABCD的玻璃化转变温度大概在哪里啊？谢谢了

Originally posted by hero0423 at 2010-09-25 10:47:30:
从图结果看来，自聚物的Tg约在零下50度左右，共聚物在零度左右；
两者共混后Tg都有所增加，其中自聚物增加不明显，共聚物增加很明显，大约提高到50度左右；
而无机盐的加入对自聚物和共聚物的相容性没有帮助，反 ...

Originally posted by duqiulia at 2010-09-25 23:45:56:

玻璃化转变温度一般是正还是负？