低温等离子体改性对芳纶1313纤维/纤维素复合绝缘纸性能的影响  

Effect of Low Temperature Plasma Modification on Properties of Aramid 1313 Fiber/Cellulose Composite Insulating Paper

作　　者：邹田甜 孙传聪 熊秋菊 甄珍 刘威 ZOU Tiantian;SUN Chuancong;XIONG Qiuju;ZHEN Zhen;LIU Wei(Shandong Drug and Food Vocational College,Weihai 264200,China)

机构地区：[1]山东省药品食品职业学院,山东威海264200

出　　处：《绝缘材料》2022年第5期19-26,共8页Insulating Materials

基　　金：国家市场监督管理总局科技计划项目(2019MK045)。

摘　　要：在天然纤维素浆粕中掺杂不同含量的芳纶1313(PMTA)短切纤维,可降低复合绝缘纸的介电常数及介质损耗,但由于两种纤维的结合能力差,复合绝缘纸样品的力学性能会大幅降低。为解决这一问题,本文重点研究低温等离子体处理对两种纤维素结合能力的提升效果,并对制备得到的复合绝缘纸性能进行测试分析。结果表明:低温等离子体处理可有效提升两种纤维间的结合力,从而弥补力学性能的损失,而且对复合绝缘纸的介电及击穿特性影响不大。SEM和XPS分析结果表明,经低温等离子体处理后的PMTA纤维表面变得粗糙,且极性官能团数量增加,与纤维素基体的结合力增强,复合绝缘纸样品的孔隙明显减少。在天然纤维素桨粕中掺杂低温等离子体处理的PMTA制备的复合绝缘纸样品工频相对介电常数和介质损耗因数均有所降低,交/直流电气强度和体积电阻率基本保持不变,抗张强度和断裂伸长率得到较大补偿。The dielectric constant and dielectric loss of composite insulating paper can be reduced by doping different content of aramid 1313(PMTA) in the natural cellulose pulp, but the mechanical properties of composite insulating paper are greatly reduced due to the poor combining ability of two fibers. In order to solve this problem,we studied the improvement effect of low-temperature plasma treatment on the binding capacity of two kinds of cellulose emphatically, and tested and analyzed the properties of the prepared composite insulating paper. The results show that the low-temperature plasma treatment can effectively improve the binding force between the two kinds of fibers, so as to make up for the loss of mechanical properties, and it has little influence on the dielectric and breakdown characteristics of the composite insulating paper. The results of SEM and XPS show that the surface of PMTA fiber after low temperature plasma treatment become rough, the polarity functional group increases, the binding force with cellulose matrix increases, and the voids of composite insulating paper sample decreases significantly. The power frequency relative permittivity of the composite insulating paper prepared by doping low temperature plasma treated PMTA in natural cellulose pulp is reduced, while the AC/DC electric strength and volume resistivity remain unchanged, and the tensile strength and elongation at break are compensated to the maximum.

关 键 词：芳纶1313 低温等离子体 复合绝缘纸 介电性能 力学性能 

分 类 号：TM215[一般工业技术—材料科学与工程]