改性芳纶短纤维增强氯丁橡胶/顺丁橡胶复合材料的实验研究  

Experimental study of modified aramid staple fibre reinforcin neoprenel/cis-polybutadiene rubber composites

作　　者：李勇[1] 路辉[1] LI Yong;LU Hui(China Petroleum&Chemical Corporation Shengli Oilfield Branch,Dongying 257000,China)

机构地区：[1]中国石油化工股份有限公司胜利油田分公司,山东东营257000

出　　处：《弹性体》2024年第1期37-42,共6页China Elastomerics

摘　　要：采用等离子体/油酸钾协同处理对芳纶纤维进行改性,并研究了改性芳纶纤维对氯丁橡胶/顺丁橡胶并用胶的增强作用。结果表明,等离子体的高能冲击使芳纶纤维的表面粗糙度增大,增加了芳纶纤维的表面积,并在芳纶纤维表面引入活性位点;油酸钾改性促进了芳纶纤维极性的削弱及其与橡胶的界面结合;经过等离子体/油酸钾协同处理的改性芳纶纤维增强后,橡胶复合材料的拉伸强度提高了25.85%,定伸模量提高了34.65%,刚度提高了10.96%,在正硫化时间(t90)未改变的情况下,焦烧时间(t10)下降。In this paper,aramid fibres were modified by plasma/potassium oleate,and the reinforcing effect of modified aramid fibres on neoprene rubber was investigated.The results showed that the high-energy impact of plasma increased the surface roughness of aramid fibers and increased the surface modification contact area of the aramid fibre.And the introducation of active sites on the surface of aramid fibre,such as hydroxyl(—OH)and carboxyl(—COOH—),can improve the hydrophilicity,lipophilicity,or other specific properties of fiber surface.Potassium oleate modification promoted the weakening of the polarity of aramid fibre and their interfacial bonding with rubber.The effect of plasma/oleic acid modified aramid fibres on the properties of rubber composites were investigated by determining the vulcanisation characteristics and physical and mechanical properties of aramid fibre reinforced rubber.The results showed that the tensile strength,constant tensile modulus,and stiffness of the rubber composites were increased by 25.85%,34.65%and 10.96%,respectively after reinforcement with plasma/oleic acid-modified aramid fibres,and the t 10 was decreased while t 90 was unchanged.

关 键 词：芳纶纤维 等离子体 油酸钾 橡胶复合材料 表面改性 物理机械性能 

分 类 号：TQ333.2[化学工程—橡胶工业] TQ333.5