改性凹凸棒土补强力车胎胶料的制备及性能研究  

Study on preparation and properties of modified attapulgite reinforced tire compound

作　　者：张小萍[1] 韦帮风 杨慧[1] 王忠光[1] Zhang Xiaoping;Wei Bangfeng;Yang Hui;Wang Zhongguang(Xuzhou College of Industrial Technology,Rubber Recycling Engineering Technology R&D Center of Jiangsu Province,Xuzhou 221140,Jiangsu,China;Xuzhou Armour Rubber Co.LTD.,Xuzhou 221011,Jiangsu,China)

机构地区：[1]徐州工业职业技术学院,江苏省橡胶循环利用工程技术研发中心,江苏徐州221140 [2]徐州徐轮橡胶有限公司,江苏徐州221011

出　　处：《橡塑技术与装备》2023年第1期49-53,共5页China Rubber/Plastics Technology and Equipment

摘　　要：采用机械共混法制备了半湿法改性纳米凹凸棒土(AT)补强力车胎胶料,研究了改性AT填充份数对力车胎胶料门尼黏度、硫化特性及力学性能的影响,并用扫描电镜(SEM)和透射电镜(TEM)观察了改性AT及其补强的力车胎胶料的微观结构。结果表明,改性后的AT是由直径10~25 nm,长度100~2000 nm的纳米单晶聚集而成,单晶间的作用力较微弱,能在机械剪切力的作用下分离并均匀分散在力车胎胶料中,形成界面金金2结合效果良好的纳米复合材料。半湿法改性后的AT相对于沉淀法白炭黑,能降低力车胎胶料的门尼黏度,缩短硫化时间,改善力车胎胶料的加工工艺性能。随改性AT用量的增加,力车胎胶料的拉伸强度、300%定伸应力和撕裂强度先增大后略有下降;当改性AT添加量为60份时,力车胎胶料的综合性能最佳,其各项力学性能值均达到并超过国家标准的要求。Semi wet modified nano attapulgite(AT)tire compound was prepared by mechanical blending.The effects of the filler fraction of modified AT on Mooney viscosity,vulcanization properties and mechanical properties of the tire compound were studied.The microstructure of the modified AT and its reinforced tire compound was observed by scanning electron microscopy(SEM)and transmission electron microscopy(TEM).The results show that the modified AT is composed of nano single crystals with a diameter of 10~25 nm and a length of 100~2000 nm.The force between the single crystals is weak,which can be separated and uniformly dispersed in the tire compound under the action of mechanical shear force,forming a nanocomposite with good interfacial bonding effect.Compared with precipitated silica,the semi wet modified AT can reduce the Mooney viscosity of the tire compound,shorten the curing time,and improve the processing properties of the tire compound.With the increase of the amount of modified AT,the tensile strength,300%elongation stress and tear strength of the tire compound first increased and then decreased slightly.When the content of modified AT was 60 phr,the comprehensive properties of the tire compound were the best,and its mechanical properties reached and exceeded the requirements of the national standard.

关 键 词：半湿法改性 凹凸棒土 力车胎 工艺性能 力学性能 纳米复合材料 

分 类 号：TQ330.61[化学工程—橡胶工业]