摘要
通过理论分析、差示扫描量热法、红外光谱、广角 X 射线衍射、扫描电镜等手段,对PBT/PET 熔融共混体进行了研究,讨论了其相容性和结构特性。研究发现:共混体在所有不同组成,其混合热△H_m 均小于41.8mJ;共混体中没有形成混晶,共混体只出现一个玻璃化转变温度,且介于 PET 和 PBT 的玻璃化温度之间;共混体的红外光谱中,出现 C=O 谱带从1727cm^(-1)移向1718cm^(-1)的现象。表明两者之间确实存在一定程度的相互作用,这种相互作用是共混体无定形区相容的内在因素;PBT 和 PET 均以微纤状存在于共混纤维中。
By means of theoretic analysis,DSC,IR,WAXD and SEM,the PBT/PETmelted blend was studied,and its compatibility and the characteristics of structurehate been discussed in this paper.It is found:whichever the composition of theblend is,the △H_m is less than 41.8mJ;the Only one glass transition temperatureis between those of PBT and PET,no blend crystal is formed;in the infraredspectrogram,there is C=O bond,the infrared absorption band moves from 1727cm to 1718 cm^(-1),PBT and PET in the blended yarn is in microfiber.
出处
《合成纤维工业》
CAS
CSCD
1990年第1期41-45,共5页
China Synthetic Fiber Industry
