摘要
十种聚合物固体的等温压缩实验证明Tait方程和Murnaghan方程在0—3GPa范围内能够精确地描述非晶、半晶和结晶聚合物的P-V关系;Tait参数C_T=0.0894,Mumaghan参数C_M=0.1016为普适值。这两个方程的线性式用起来颇方便;当有压致松弛时可进行分段处理,能获得有关结构松弛的信息。对Bridgman多项式的适用性也进行了讨论。并计算了Gr(?)neisen参数。
The applicabilities of Tait and Murnaghan equations of state and Bridgman polynomial to isothermal compressions of 10 polymer solids have been examined up to 3 GPa at room temperature. Tait and Murnaghan equations are equivalent and their linear forms (6) and (7) are very accurately for multisegmentally fitting the isothermal P-V date of amorphous, semi-crystaline polymer solids with the universal values CT= 0.0894 for Tait and CM= 0.1016 for Murnaghan parameter, Bridgman polynomial can also be used but is inconvenient when there are pressure-induced transitions. Equation is also presented for Gruneisen parameter from Tait and Murnaghan parameters.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1989年第1期86-92,共7页
Acta Polymerica Sinica
基金
国家自然科学基金
关键词
聚合物固体
等温压缩
高压
High pressure, Equation of state of polymer, Isothermal compression of polymers
