固相法改性淀粉/炭黑/丁苯橡胶复合材料的制备与性能研究  

Preparation and properties of solid-state modified starch/carbon black/styrene butadiene rubber composites

作　　者：谢东[1,2] 陈东城 古菊[1] 贾德民[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640 [2]广东省工业技术研究院生物工程研究所广东省甘蔗改良与生物炼制重点实验室,广东广州510316

出　　处：《弹性体》2013年第6期1-6,共6页China Elastomerics

基　　金：聚合物成型加工工程教育部重点实验室开放课题资金资助(20071006)

摘　　要：采用固相法制备了淀粉接枝马来酸酐(MAH)和丙烯酸丁酯(BA)的共聚物Starch-gMAH/BA(SMB)。采用机械共混法用15phr的改性淀粉(SMB)代替等量的炭黑(CB),制备了改性淀粉/炭黑/丁苯橡胶复合材料(SMB/CB/SBR),研究了复合材料的力学性能、热氧老化性能、动态力学性能以及微观形态。结果表明,SMB/CB/SBR复合材料的力学性能优于未改性淀粉/CB/SBR复合材料,拉伸强度及扯断伸长率等性能优于SBR/CB复合材料;且SMB/CB/SBR复合材料具有更好的耐热氧老化性能;与SBR/CB复合材料相比,SMB/CB/SBR复合材料具有更低的滚动阻力;微观形态显示,淀粉经改性后粒子尺寸减小,在SBR基体中的分散性得到改善,与SBR基体的相容性得到提高。Starch-g-MAH/BA （SMB）, prepared by the solid state reaction method,is the graft co- polymer of nature starch, maleic anhydride （MAH） and butyl acrylate （BA）. SMB/carbon black （CB）/styrene butadiene rubber（SBR） composite was prepared by mechanical blending. The mechani- cal properties, hot air aging properties, dynamic mechanical properties and micro morphology were in- vestigated. The results showed that the mechanical properties of SMB/CB/SBR composite are superior to those of starch/CB/SBR composite and CB/SBR composite. Also the SMB/CB/SBR composite has better hot air aging properties. The rolling resistance of SMB/CB/SBR composite is lower than that of CB/SBR composite. The micro morphology analysis showed that the size of starch particle is de- creased,the dispersibility of starch is increased and the compatibility between starch and SBR is im- proved after modification.

关 键 词：淀粉 固相法 接枝改性 炭黑 丁苯橡胶 

分 类 号：TQ333.1[化学工程—橡胶工业]