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题名 优化丁腈橡胶N41生产工艺提高产品质量
姓名 高志兴
院系 化学化工学院
专业 化学工程
学位名称 工程硕士
外文题名 Optimizing the Production Process of Nitrile Rubber N41 to Improve Product Quality
第一导师姓名 李彦锋
关键词 转化率;300%定伸应力;结丙;拉伸强度;塑化胶
外文关键词 conversion rate;stress at a 300% elongation;bound acrylonitrile;tensile strength; plasticized rubber
学科 工学
摘要 通过分析1.5万吨/年丁腈橡胶装置的运行情况,对影响丁腈橡胶N41成品的综合物理性能和塑化胶产生速率因素进行分析研究,并提出相应的解决对策。影响丁腈橡胶N41成品的综合物理性能主要从4个方面进行研究和解决:引发剂系统改造和腈水提浓系统改造后,N41的转化率平稳率由60%左右提高到90%以上;N41的结丙平稳率从91.5%提高到了95.1%;在分析在线胶浆门尼和大罐胶浆门尼时,防老剂加入量一致,能够杜绝门尼的分析误差,同时生产中加入足量的防老剂,能够杜绝门尼在产品放置过程中发生衰减现象;通过补加工艺,控制丁腈橡胶N41成品胶中残留氯化钙含量在800~1200mg/kg,可以提高其拉伸强度和300%定伸应力,从而提高产品优级品率。塑化胶产生速率主要从3个方面进行分析解决:防老剂在胶浆中加入量从原配方提高到1.5倍配方后,丁腈橡胶N41在生产过程中塑化胶的产生量减少;丁腈橡胶N41随干燥器温度降低,塑化胶产生速率明显降低;降低洗涤槽的搅拌转速,能有效减缓洗涤槽湍流程度,使橡胶颗粒大小均匀,细碎颗粒减少,不容易粘在干燥器网板网孔间,有效的降低塑化胶产生速率。
外文摘要 The factors affecting the comprehensive physical properties and plasticized rubber production rate of nitrile rubber N41 finished products are studied by analyzing the running conditions of 15000 ton/year nitrile rubber plant, and related solutions are proposed. The factors affecting the comprehensive physical properties of nitrile rubber N41 finished products are studied and resolved in the following four aspects: N41 polymerization conversion rate and steady rate increase from around 60% to more than 90% after remolding of the initiator system and acrylonitrile-water concentration system; N41 bound acrylonitrile steady rate increases from 91.5% to 95.1%; the same quantity of age resister is added during analysis of online mucilage Mooney and large tanks of mucilage Mooney to prevent Mooney analytical errors meanwhile adding sufficient age resister during production can prevent Mooney attenuation during product placement; the content of residual calcium chloride in nitrile rubber N41 finished products is controlled between 800 and 1200 mg/kg through fabrication processing to increase the tensile strength, stress at a 300% elongation, and rate of premium-grade products. The factors affecting the plasticized rubber production rate are analyzed and resolved in the following three aspects: after the quantity of age resister added to mucilage in the original formula is increased by 1.5 times, the plasticized rubber produced during the production of nitrile rubber N41 decreases; the plasticized rubber production rate decreases obviously with fall of dryer temperature; reducing the sink stirring speed can effectively slow down sink turbulence, uniformize rubber particles, and reduce subtle particles so that the particles will hardly stick to meshes of the dryer board, effectively reducing the plasticized rubber production rate.
研究领域 化学工程
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