摘要
将聚丙烯接枝马来酸酐(PP-g-MAH)与硬脂酸镁共混制备马来酸接枝PP镁离聚物(PP-g-MAMg),通过红外光谱与X射线光电子能谱进行表征,对PP-g-MAMg的介电性能、体积电阻率、击穿场强进行了分析研究。结果表明,随着Mg^(2+)含量的增加,PP-g-MAMg的介电常数和介电损耗均先增大后减小,PP-g-MAMg体积电阻率的变化表现为先升高后降低,击穿场强先减小后增大而后再减小。采用旋转流变仪对PP/PP-g-MAMg复合材料的流变性能进行研究。结果表明,加入PP-g-MAMg后,体系的储能模量和损耗模量与纯PP相比都有所提高,高频区比低频区更为明显;PP-g-MAMg的加入对PP的复合黏度影响较大,与纯PP比较,PP/PP-g-MAMg共混体系的复合黏度有明显的上升趋势。
PP-g-MAMg was prepared by blending polypropylene grafted maleic anhydride(PP-g-MAH)with magnesium stearate.The dielectric properties,volume resistivity and breakdown field strength of PP-g-MAMg ionomers were characterized by IR and XPS.The results show that with the increase of Mg^(2+)content,the dielectric constant and dielectric loss of PP-g-MAMg ionomers first increase and then decrease,and the volume resistivity of PP-g-MAMg ionomers first increases and then decreases,the breakdown field strength first decreases,then increases,and then decreases;the rheological properties of PP/PP-g-MAMg ionomer composites were studied by rotating rheometer.The results show that after adding PP-g-MAMg,the storage modulus(G')and loss modulus(G'')of the system are improved compared with those of pure PP,and the high frequency region is more obvious than the low frequency region;the addition of PP-g-MAMg has a great influence on the composite viscosity of PP.Compared with pure PP,the composite viscosity of the PP/PP-g-MAMg system is higher(g^(*)),showing an obvious upward trend.
作者
孙秀明
于浩
张文龙
Xiuming Sun;Hao Yu;Wenlong Zhang(School of Materials Science and Chemical Engineering,Harbin University of Science and Technology,Harbin 150040,China;Yangzhou Longda Eletrical Materials Co,Ltd,Yangzhou 225222,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2022年第11期126-131,共6页
Polymer Materials Science & Engineering
关键词
聚丙烯
离聚物
流变性能
polypropylene
ionomer
rheological properties
