高熔体流动速率茂金属聚丙烯性能评价  

Performance evaluation of high melt flow rate metallocene polypropylene

作　　者：谌基国 李永江 范刚 丰雷 谷新华 SHEN Ji-guo;LI Yong-jiang;FAN Gang;FENG Lei;GU Xin-hua(a.Research Institute,Dushanzi Petrochemical Company,PetroChina,Karamay 833699,China;nd Polyolefin Department,Dushanzi Petrochemical Company,PetroChina,Karamay 833699,China;Production and Operation Department,Dushanzi Petrochemical Company,PetroChina,Karamay 833699,China;Xinjiang Laboratory of Rubber-Plastic Material,Karamay 833699,China)

机构地区：[1]中国石油独山子石化公司研究院,新疆克拉玛依833699 [2]中国石油独山子石化公司聚烯烃二部,新疆克拉玛依833699 [3]中国石油独山子石化公司生产运行处,新疆克拉玛依833699 [4]新疆橡塑材料实验室,新疆克拉玛依833699

出　　处：《石化技术与应用》2022年第4期254-257,共4页Petrochemical Technology & Application

基　　金：国家重点研发计划资助项目(项目编号:2021 YFB 3800704)。

摘　　要：采用美国GRACE公司生产的茂金属聚丙烯(mPP)催化剂,在中国石油独山子石化公司国产第2代环管工艺聚丙烯装置上进行了高熔体流动速率mPP的生产,对产品性能进行了评价,并进行了熔喷布试生产。结果表明:生产的高熔体流动速率mPP熔体流动速率可达到150 g/min,其粉料经造粒后熔体流动速率下降约25%;与降解法熔喷料相比,高熔体流动速率mPP的结晶(熔融)温度、结晶度、灰分和挥发分质量分数明显较低,氧化诱导期相当,但混料后的高熔体流动速率mPP生产的熔喷布纤维较粗,布面偏硬,过滤效率低。High melt flow rate metallocene polypropylene(mPP)was produced by adopting metallocene catalyst in the 2nd generation round-pipe polypropylene unit in Dushanzi Petrochemical Company,PetroChina.The performance of the product was evaluated and the melt-blown fabric test was carried out.The results showed that the melt flow rate of mPP could reach 150 g/min,and the melt flow rate of mPP had decreased about 25%after granulation.The crystallization temperature,the mass fraction of crystallinity,ash content and volatiles of the high melt flow rate mPP were obviously lower than those of degradation melt-blown material,and the oxidation induction period was similar.However,the melt-blown fabric produced by the high melt flow rate mPP was thicker,the cloth surface was harder,and the filtration efficiency was lower.

关 键 词：聚丙烯 茂金属 催化剂 高熔体流动速率 熔喷 

分 类 号：TQ342.62[化学工程—化纤工业]