热致液晶聚合物 Ⅱ.结晶及熔融行为THERMOTROPIC LIQUID CRYSTALLINE POLYMER Ⅱ . MELTING AND CRYSTALLIZATION BEHAVIOR
刘永建,沈新元
Liu Yongjian Shen Xinyuan (Institute of Materials Sri. & Eng.Donghua University; 200051);
摘要(Abstract)：
采用差示扫描量热法(ＤＳＣ)在等温结晶过程中,研究了热致液晶聚合物的结晶及熔融行为。结果发现,在非等温结晶过程中没有明显的冷热结晶峰;随着时间的延长,熔触焓逐渐增大,并趋于定值;在２８０℃下,结晶度最高,结晶速率也最快;通过外推,估算了平衡熔点。
The melting and crystallization behavior of a thennotropic liquid crystalline polymer was studied by DSC. Experimental data show that neither the cold crystallization peak nor the hot crystallization peak could be observed during non-isothermal crystallization processes. Isothermal crystallization at various temperatures for different times show that crystallinity increased with time, and finally reached to a constant level.The equilibrium melting point is obtained to be 346℃ based on the extrapolation procedure.
关键词(KeyWords)：
热致液晶聚合物;结晶;熔融
基金项目(Foundation):
作者(Authors):
刘永建,沈新元
Liu Yongjian Shen Xinyuan (Institute of Materials Sri. & Eng.Donghua University; 200051);
DOI: 10.16090/j.cnki.hcxw.2001.03.003