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Mathematical Simulation of High-Conversion Binary Copolymerization
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作者 JiangWei QinJiguang 《工程科学(英文版)》 2005年第1期74-79,共6页
A new model for mathematical simulation of high-conversion binary copolymerization was established by combination of the concept of the three stage polymerization model (TSPM) proposed by Qin et al. for bulk free radi... A new model for mathematical simulation of high-conversion binary copolymerization was established by combination of the concept of the three stage polymerization model (TSPM) proposed by Qin et al. for bulk free radical homopolymerization with the North equation to describe high-conversion copolymerization reaction exhibiting a strong gel effect, and the mathematical expressions of this new model were derived. Like TSPM, the new model also assumes that the whole course of binary copolymerization can be divided into three different stages: low conversion, gel effect and glass effect stages. In addition, the reaction rate constants and the initiator efficiency at each copolymerization stage do not vary with conversion. Based on the expressions derived, a plot method for determining the overall rate constants and critical conversions was proposed. The literature data on conversion history for styrene (St)-methyl methacrylate (MMA) and ethylene glycol dimethacrylate (EGDMA)-MMA copolymerizations were treated to examine the model, which shows that the model is satisfactory. 展开更多
关键词 二元共聚 反应速度 链传播 链终止 tspm
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中压配电变压器优化规划 被引量:26
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作者 张崇见 余贻鑫 严雪飞 《电力系统自动化》 EI CSCD 北大核心 1999年第1期27-30,共4页
建立了城市电网中压百己电变压器位置、容量和供电范围优化规划的模型,然后在此基础上给出了求解这一大规模、非线性混合整数规划问题的实用的、大范围自动寻优的三角连续分割算法。实际算例表明,该模型和算法能更好地满足规划的要求。
关键词 配电网规划 中压配电变压器 优化规划 城市电网
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