摘要
抗氧剂1010是一种高分子量的受阻酚类抗氧剂,广泛用于塑料、橡胶、合成纤维和弹性体中。抗氧剂1010的粒度、堆密度及晶型等特性与结晶溶剂和工艺密切相关。采用静态平衡法测定了抗氧剂1010分别在甲醇、乙醇、丙醇、异丙醇、丁醇、异丁醇和仲丁醇溶剂中的溶解度数据,为结晶工艺研究和工业生产提供必要的基础数据。考虑到抗氧剂1010分子较大的特点,引入了自由体积活度系数项,并将■M看作一个参数KFV,得到了适合所研究物系的UNIFAC-KFV方程。采用UNIFAC和UNIFAC-KFV方程对研究物系进行计算,UNIFAC-KFV计算结果与实验数据符合较好,结果表明,文中提出的模型是成功的。
In plastic, rubber, synthetic fiber and elastomer, the antioxidant 1010 is widely used as a kind of hindered phenolic antioxidant. As to antioxidant 1010, its behaviors of granularity, stack-density and crystal morphology are closely related to the crystallization solvents used and its crystallization process. In this paper, the solubilities of antioxidant 1010 in methanol, ethanol, n-propanol, iso-propanol, n-butanol, iso-butanol and sec-butanol were respectively determined by static method. The experiments provide the basic data and academic foundation for crystallization process and industrial magnification of antioxidant 1010. Considering the large molecular volume of the antioxidant 1010 relative to the studied solvents, the activity coefficient of free volume was introduced into UNIFAC-FV equation and ν^-M Was considered as a parameter KFV simultaneously, and then a new model UNIFAC- KFV was found. The solid-liquid equilibria of the systems studied in this paper were calculated with the UNIFAC and UNIFAC- KFV equations, respectively. The results show that the data calculated by using UNIFAC- KFV equation fit well with the experimental results, and it indicates that the new model is successful.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2009年第4期715-718,共4页
Journal of Chemical Engineering of Chinese Universities
