摘要
用施罗德公式计算癸酸和硬脂酸分子合金的最低共熔点,并在此基础上采用熔融搅拌法制备一系列不同配比的二元体系。用差示扫描量热计(DSC)、冷却-熔融实验、导热系数仪、热失重分析(TG)和冷热循环实验分析二元体系的热性能和热稳定性,并绘制相图。结果表明:癸酸与硬脂酸二元体系没有一个确定的共熔点,而只是一个范围;当癸酸质量分数为85%、90%时,体系熔融温度相对较低,分别为30.5℃和30.8℃,对应熔融潜热分别为155.5J/g和161.0J/g;循环1 000次后,癸酸质量分数为90%的二元体系相变温度和相变潜热变化很小,具有良好的稳定性。
The eutectic point Schroeder equation. A series of bi of the molecular alloy of capric acid and stearic acid was calculated by nary systems of capric acid and stearic acid with various proportions were prepared by melt stirring method on the basis of eutectic point calculation. DSC, gradual cooling and melting tests, thermal conductivity test, TG and accelerated thermal cycle test were employed to analyze their thermal properties and thermal reliability, and to draw the phase diagrams of the binary systems. The results show that capric acid and stearic acid have no distinct eutectic temperature but a completely miscible range. The eutectic systems with mass ratios of capric acid of 85G and 90G have low melting temperatures of 30.5 ~C and 30.8 ~C, with their latent heat of fusion values of 155.5 J/g and 161.0 J/g, respectively. After 1 000 thermal cycles, the phase change temperature and latent heat of the euteetic system with 90% capric acid change a little.
出处
《华东理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第3期275-279,共5页
Journal of East China University of Science and Technology
基金
上海市科学技术委员会资助(10DZ2290600)
关键词
癸酸
硬脂酸
热性能
热稳定性
capric acid
stearic acid
thermal properties
thermal stability
