摘要
利用动态力学分析方法考察了ＰＢＴ／ＰＥＴ合金的动态力学粘弹谱，从谱图中分析得到：在ＰＢＴ／ＰＥＴ合金中除了完全互溶状态的ＰＢＴ／ＰＥＴ外，还存在独立的ＰＨＴ、ＰＥＴ区域。合金的特性粘度增加，其动态模量增加，而且相转变损耗峰向高温方向移动。其中β松弛损耗峰是由于酯基－ＣＯＯ－的运动引起的，它的峰值随合金特性粘度增加而下降。这些均可以由合金中ＰＢＴ、ＰＥＴ的相溶性及分子运动得到解释。
In order to explore the relation between the structure and property of polymer, dynamic mechanical analysis is one of the most effective methosd, which was utilized in our experiment to investigate PBT/PET blends.It indicated that there are three states:PBT,PET,and miscible PBT/PET. with increasing the intrinsic viscosity,the dynamic moduli increase,the mechanical loss peaks shifted to high temperture and β loss peak from -C-O- vibration decreased. All of those results can be occounted in terms of the miscible and molecular molecular movement in PBT/PET blends.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1994年第6期75-79,共5页
Polymer Materials Science & Engineering
关键词
动态模量
高聚物
共混
相容性
PET
PBT
s:poly(butylene terephthalate),poly(ethylene terephthalate),intrinsic viscosity,dynamic miduli,mechanical loss.
