摘要
茂金属聚丙烯(mPP)具有结晶度高、微晶尺寸小、分子量分布窄以及熔体流动速率易调控等优势,是熔喷无纺布专用料的优质原料。实验结果显示,聚丁烯弹性体(PBt-TPE)加入mPP,可降低mPP的结晶度,减小其微晶尺寸,还能降低其熔体黏度,提高其柔韧性。PBt-TPE也会降低mPP的化学降解反应速率,相应调控mPP/PBt-TPE共混体系的降解过程,可以获得分子量分布更窄的mPP/PBt-TPE复合物。丙烯基弹性体(POE)可以在一定程度上促进mPP/PBt-TPE共混体系的降解反应,获得分子量更低、分子量分布更窄的mPP/PBt-TPE复合体系,进一步改善复合材料的熔喷加工性能。
Metallocene polypropylene(mPP)has advantages such as high crystallinity,small microcrystalline size,narrow molecular weight distribution,and easy control of melt flow rate,making it a high-quality raw material for melt blown non-woven fabrics.The results show that the addition of polybutene elastomer(PBt-TPE)to mPP can reduce its crystallinity and its microcrystalline size,and can also reduce its melt viscosity and improve its flexibility.PBt-TPE can also reduce the chemical degradation rate of mPP,and correspondingly regulate the degradation process of mPP/PBt-TPE blend,which can obtain mPP/PBt-TPE composites with narrower molecular weight distribution.Poly(ethylene-propylene)elastomers(POE)can promote the degradation reaction of mPP/PBt-TPE blend to a certain extent,obtaining lower molecular weight and narrower molecular weight distribution mPP/PBt-TPE composite,further improving the melt blown processing performance of composite materials.
作者
林晓年
雷珺宇
梁新龙
曾锦润
汪寒辰
张蔚
蔺隆
杨军忠
Lin Xiaonian;Lei Junyu;Liang Xinlong;Zeng Jinrun;Wang Hanchen;Zhang Wei;Lin Long;Yang Junzhong(South China University of Technology,Guangzhou 510006,China;Petrochemical Research Institute,PetroChina Company Limited,Beijing 102206,China)
出处
《广东化工》
CAS
2024年第19期26-31,共6页
Guangdong Chemical Industry
关键词
茂金属聚丙烯
聚丁烯弹性体
丙烯基弹性体
共混
控制降解
metallocene polypropylene
polybutene elastomer
poly(ethylene-propylene)elastomers(POE)
blending
controlled degradation
