摘要
测定了MC尼龙和MC尼龙/稀土纳米复合材料制备的温度与时间关系曲线,用非等温反应动力学方法对数据进行处理,用多元回归法确定其表观动力学参数。结果表明：MC尼龙和MC尼龙/稀土纳米复合材料制备过程的动力学特征基本相似,是一个并行的聚合/结晶过程;稀土纳米氧化物对MC尼龙制备的阴离子聚合反应有促进作用;MC尼龙和MC尼龙/稀土纳米复合材料制备过程的表观活化能在92～145kJ/mol之间,反应级数在0.9～1之间,频率因子在108～1014之间,MC尼龙和MC尼龙/稀土纳米复合材料制备过程由化学反应步骤控制。
Temperature-time relationship curves of MC nylon and MC nylon/rare earths nanocomposite were determined. The datum were handled by non-isothermal reaction kinetics. The kinetics parameters were confirmed by multi-regression. The results show that： the kinetics characteristics of MC nylon are similar to that of MC nylon/rare earths nanocomposites during the preparation, which is a parallel process of polymerization/crystallization; rare earths nanooxide has promoting effect on the anion polymerization; the apparent activation energy of MC nylon and MC nylon/rare earths nanocomposite during the preparation is 92～145kJ/mol, the reaction order is 0.9～1, the frequency factor is 10^8～10^14, the preparation process of MC nylon and MC nylon/rare earths composite is step-controlled by chemical reaction.
出处
《塑料科技》
CAS
北大核心
2008年第8期24-28,共5页
Plastics Science and Technology
基金
广东省自然科学基金项目(011786)
