摘要
本文用DSC研究了等温熔体结晶尼龙1010薄膜试样的熔融。发现结晶温度T_c<190℃时有三个峰T_m、T_2和T_3,其低温转化峰T_3=13.5±0.94T_c;T_c<170℃时T_2=175℃,到180℃升至190℃;熔融热随T_c线性升高,至192℃后又线性降低;结晶度随低规整度晶体增加而增加;结晶时间长时高规整度晶体增多。
The melting process of the isothermal crystallizing film samples of Nylon 1010 from the melt have been studied by DSC. If the crystallizing temperature Tc<190℃ .three melting peaks of the samples was obsvered , named as Tm,T2,and T3(T3 = 13. 5 + 0. 94Tc) from high to low temperatures,Tc<170℃.T2=175℃;Tc = 180c℃,T2 = 190℃. When Tc≥190℃,two peaks on the melting curves were obsvered T2=190℃. The heats of melting are increased with increasing of Tc linearly till Tc<192℃.and then decreased. Increasing of the degrees of crystallinity of the samples is mostly contributed by the lower perfect crystal. The long crystallizing time produces more higher perfect crystal.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1992年第5期90-94,共5页
Polymer Materials Science & Engineering
关键词
尼龙
等温结晶
熔融
nylon 1010,isothermal melt crystallization,melting.
