混合溶剂中三氯甲烷的含量对氯磺化聚乙烯生产的影响研究

为解决四氯化碳配额不能满足生产负荷需要的问题,本文首次使用了三氯甲烷与四氯化碳作为混合溶剂进行生产实验。研究了氯磺化聚乙烯生产中,三氯甲烷含量对氯磺化聚乙烯生产中各项工艺指标的影响。结果表明,三氯甲烷与四氯化碳的含量比为3∶7时,能够较好地满足生产要求,同时也达到了环保要求。     

混合溶剂法氯磺化聚乙烯橡胶湿法凝聚工艺研究

采用湿法凝聚工艺对氯磺化聚乙烯胶液进行凝聚,并将混合溶剂脱出回收重复利用,凝聚后的湿胶块经螺杆脱挥等干燥处理后即成氯磺化聚乙烯橡胶。研究了凝聚温度、搅拌桨、水胶比等、对湿胶块水含量、混合溶剂含量等的影响,并测其物化性能,根据螺杆脱挥的要求确定了湿法工艺条件。     

混合溶剂法氯磺化聚乙烯的研究

以高密度聚乙烯为原料,Cl2和SO2为反应气体,偶氮二异丁腈为引发剂,进行了混合溶剂比例的工业化试验研究,探索了不同比例的混合溶剂对合成氯磺化聚乙烯(CSM)的反应条件、反应过程和最终产物CSM的氯、硫含量及产品性能的影响,同时对CSM进行了表征。结果表明,在一定的工艺条件下,采用混合溶剂代替纯四氯化碳溶剂合成CSM,产品物性未受到溶剂更换的影响;在工业化装置上,采用混合溶剂可以稳定生产CSM,其性能指标达到同类产品的水平。     

氯磺化聚乙烯橡胶生产与应用

氯磺化聚乙烯(筒称CSM)是低密度聚乙烯或高密度聚乙烯经过氯化和氯磺化反应制得的一种特种橡胶。分子量一般在20000-30000之间，CSM具有独特的综合性能，具有良好的着色性、耐油、耐热、抗氧化性、耐候性、耐腐蚀性、阻燃性、耐磨性和韧性。因而用途广泛。     

技术创新为吉化氯磺化聚乙烯改造项目提供有力支持

技术创新为吉化氯磺化聚乙烯改造项目提供有力支持     

气相色谱法监测氯磺化聚乙烯生产过程中四氯化碳含量

提出了将生产氯磺化聚乙烯中各控制点的不同状态的样品(液体、固体)处理成易于气相色谱分析的样品的方法。为了提高分析准确度。采用不同的定量方法监测其中的四氯化碳含量。该方法在实际应用中取得了满意的结果。     

国内唯一氯磺化聚乙烯生产实现技术升级

近日,国内唯一一套氯磺化聚乙烯装置,在吉林石化电石厂成功实现溶剂替代,以低碳、环保、产量翻番的喜人成绩,实现技术升级。     

The preparation and thermodynamic behaviors of chlorosulfonated polyethylene

The chlorosulfonated polyethylene (CSM)s with different content of chlorine and sulfur elements were prepared by aqueous solution suspension method. Prepared CSMs were characterized by Fourier transform infrared (FTIR) spectra. The content of chlorine and sulfur elements of CSM was confirmed by ion chromatography. The thermal properties and crystallization behaviors of the prepared CSMs were investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), respectively. In each TGA curve, one can observed two distinct weight loss steps, and the degradation temperatures decreased with the content of chlorine and sulfur elements increasing. The degradation temperatures of all the prepared CSMs exceeded 170°C in air, which showed good thermal stability. The calculated Avrami exponent by the opoxobck nonisothermal crystallization kinetics equation was nearly 4, which proved the CSM was homogeneous nucleation with a three‐directional spherulitic growth. The WAXD results indicated that the crystallinity of CSM decreased with the increment of chlorine and sulfur content. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

氯磺化聚乙烯的合成与应用

介绍了聚乙烯、氯化聚乙烯及氯磺化聚乙烯的生产技术、加工应用进展及发展前景。     

Preparation of chlorosulfonated polyethylene by the gas‐solid method

Chlorosulfonated polyethylene (CSM) has been prepared by the gas‐solid method in a tank reactor using chlorinated polyethylene (CPE) and a gaseous mixture of chlorine and dioxide sulfur. Sulfur content of CSM determined by element analysis is used as a reference for the quantitative determination of the degree of chlorosulfonation. The effects of reaction temperature, effective gaseous mixture concentration, particle size of CPE, and the ratio of chlorine to dioxide sulfur on chlorosulfonation are investigated. The results indicate that with the increment of reaction temperature within the range of from 30 to 50°C, the rate of chlorosulfonation during the later reaction period (15–25 min) is markedly increased and the prepared CSM has higher sulfur content. It was also found that the rate of chlorosulfonation increases with the effective gaseous mixture concentration, and that the ratio of chlorine to dioxide sulfur is preferably 1 : 1. It was proven that HCl, by‐product of the chlorosulfonation, can accelerate the rate of chlorosulfonation when the volume concentration of HCl is lower than 40%, and that the presence of oxide results in higher sulfur content of the resultant CSM. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 3582–3588, 2001     

氯磺化聚乙烯的合成

以高密度聚乙烯为原料,Cl2和SO2为反应气体,偶氮二异丁腈为引发剂,进行了溶剂筛选,采用溶剂C研究了合成氯磺化聚乙烯（CSM）的反应条件、反应过程和最终产物CSM氯、硫含量对产品性能的影响,同时对CSM进行了表征。结果表明,采用溶剂C代替四氯化碳溶剂合成CSM,氯磺化聚乙烯产品物性未受到溶剂更换的影响。     

氯磺化聚乙烯橡胶在硫基复合肥副产盐酸贮存中的应用

对硫基复合肥副产盐酸贮存和运输中所采用的贮存设备适用范围及耐蚀性能作了较全面的研究,并对此类贮存设备的选材和性能作了适当的阐述,可作为同类企业技术人员参考。     

氯磺化聚乙烯的结构与性能研究进展

简述了氯磺化聚乙烯(CSM)在国内外的主要生产工艺方法,较详细地介绍了基体树脂类型、氯含量、硫含量等结构因素对CSM化学性能如热性能、力学性能以及耐燃性能的影响。同时还介绍了CSM中氯原子序列分布的3种定量分析方法,并对其相应特点进行了阐述。