CHEMORHEOLOGICAL ANALYSIS OF FREE RADICAL POLYMERIZATION PROCESSES DURING REACTIVE EXTRUSION

JIA Yuxi~

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CHEMORHEOLOGICAL ANALYSIS OF FREE RADICAL POLYMERIZATION PROCESSES DURING REACTIVE EXTRUSION

Research Article | 更新时间：2021-08-24

- CHEMORHEOLOGICAL ANALYSIS OF FREE RADICAL POLYMERIZATION PROCESSES DURING REACTIVE EXTRUSION
- Acta Polymerica Sinica Issue 12, Pages: 1135-1140(2007)
- 作者机构：
  
  1. 山东大学材料科学与工程学院
  2. 中国科学院长春应用化学研究所高分子物理与化学国家重点实验室,济南,250061
  3. 中国科学院长春应用化学研究所高分子物理与化学国家重点实验室长春,130022
- 作者简介：
- 基金信息：
- DOI：
  CLC： TQ316.322
- Published：2007，
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[1]贾玉玺,张国芳,孙胜,赵国群,安立佳.自由基聚合反应挤出过程的化学流变分析[J].高分子学报,2007(12):1135-1140.

JIA Yuxi~. CHEMORHEOLOGICAL ANALYSIS OF FREE RADICAL POLYMERIZATION PROCESSES DURING REACTIVE EXTRUSION. [J]. Acta Polymerica Sinica (12):1135-1140(2007)
[1]贾玉玺,张国芳,孙胜,赵国群,安立佳.自由基聚合反应挤出过程的化学流变分析[J].高分子学报,2007(12):1135-1140. DOI：

JIA Yuxi~. CHEMORHEOLOGICAL ANALYSIS OF FREE RADICAL POLYMERIZATION PROCESSES DURING REACTIVE EXTRUSION. [J]. Acta Polymerica Sinica (12):1135-1140(2007) DOI：

摘要

进行了甲基丙烯酸正丁酯在异向旋转双螺杆挤出机内的自由基聚合反应过程数值模拟

描述了单体转化率、重均分子量、流体粘度等物理量的变化特点

分析了其影响因素

获得了材料体系的化学流变规律.模拟结果与实验结果基本吻合.

Abstract

In order to optimize reactive processing conditions and synthesize polymer materials according to requirements a kinetic model of free radical polymerization of n-butylmethacrylate(n-BMA) in counter-rotating twin screw extruders was constructed mainly on the basis of the entanglement theory

and then the numerical calculation expressions of the monomer concentration

the monomer conversion

the average molecular weight and the apparent viscosity were deduced.Consequently

the free radical polymerization process of n-BMA in counterrotating twin screw extruders was numerically simulated by means of the finite volume method and an uncoupled semi-implicit iterative algorithm

and then the evolution characteristics and the influencing factors of different variables like monomer conversion

average molecular weight and fluid viscosity were discussed in detail.A comparison of the monomer conversion as well as the weight-average molecular weight between the simulated results and the experimental results shows a nearly good agreement

which indicates that the constructed model is reasonable.

关键词

反应挤出自由基聚合化学流变数值模拟凝胶效应

Keywords

Reactive extrusionFree radical polymerizationChemorheologyNumerical simulationGel effect

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