尼龙-1010前期缩聚动力学

KINETICS OF NYLON-1010 POLYCONDENSAION AT EARLIER STAGE

研究了尼龙 10 10盐敞开系统熔融缩聚的前期动力学 .结果表明 ,癸二胺挥发程度低 ,敞开系统熔融缩聚工艺可行 ,其动力学符合拟不可逆二级反应机理 ,活化能为 82 7kJ·mol-1,尼龙 10 10缩聚速率远比密闭体系的尼龙 6 6快 .

The kinetics of nylon-1010 polycondensation at earlier stage in an open system was studied. The melt polycondensation process in an open system was feasible since the volatibility of 1,10-decanediamine was low enough in the process.The kinetics was characterized by the pesudo-nonreversible reaction of the second order. The activation energy was measured to be 82.7 kJ·mol -1 .It was much faster in comparison with the polycondensation of nylon-66 in a closed system.