国产HPMC分散剂在127m3釜上生产PVC树脂的应用总结

上海氯碱化工股份有限公司在127m^3聚合釜中成功试用了国产HPMC分散剂,以替代价格昂贵的进口HPMC分散剂。共进行了50釜的应用试验,试生产了B、D、F三种牌号PVC树脂。通过分析B、D、F三种牌号PVC树脂的常规质量(如,表观密度、VCM残留量、“鱼眼”数及挥发分)、塑化性能、增塑剂吸收量及粒径分布,发现除了F牌号PVC树脂的平均粒径及粒径分布略微变宽、三目集中率略有偏低外,B、D牌号树脂的性能及F牌号树脂的其它性能均无明显变化。同时还指出,F牌号PVC树脂的粒径大小与分布可通过调整分散剂的用量来解决。

Summary on the application of domestic dispersing agent HPMC for the production of PVC in 127m3 polymerizer

Domestic dispersing agent HPMC had been successfully tested to replace the expensive imported dispersing agent HPMC in 127 m~3 polymerizer in Shanghai Chlor-Alkali Chemical Industry Co.,Ltd.The application test carried out for 50 batches,and produced B-,D-,and F-types PVC resins.After analysing their regular quality (such as apparent density,residue VCM content,the number of "fish eyes",and volatiles),plasticizing property,plasticizer adsorbed amount,and particle size distribution,it was found that except that the F-type PVC resin showed average particle size and size distribution widened slightly and rate of three-meshes decreased slightly,the properties of B- and D-types PVC resins and the other properties of F-type PVC resin didn't change obviously.It was also indicated that the problems in the particle size and size distribution of F-type PVC resin could be solved by adjusting the using amount of dispersing agent.