首页|酶解木质素/炭黑复合补强体系对丁腈橡胶的补强性能

酶解木质素/炭黑复合补强体系对丁腈橡胶的补强性能

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采用球磨法、气流粉碎法、喷雾干燥法分别处理酶解木质素(EHL),其中气流粉碎酶解木质素的比表面积最大,达到6.311 m2/g,但仍然远低于炭黑N660的比表面积.将3种预处理方法制备的酶解木质素分别与炭黑对丁腈橡胶(NBR)进行复合补强,发现气流粉碎EHL的比例为50％的硫化胶的力学性能最优:拉伸强度、扯断伸长率比球磨法的分别高出17.28％,11.11％.该硫化胶的拉伸强度(20.44 MPa)、撕裂强度,比纯炭黑/NBR的分别略降低22.96％,12.03％;而扯断伸长率则提高28.50％,胶料仍具有优良的力学性能.但是随着复合补强体系中酶解木质素比例的逐步提高,NBR硫化胶的拉伸强度、撕裂强度都呈下降趋势.
Reinforcing Properties of Enzymatic Hydrolysis Lignin/Carbon Black Composite Filler System for Acrylonitrile Butadiene Rubber
Three methods viz.ball milling (BM),jet milling (JM) and spray drying (SD) were utilized to pretreat enzymatic hydrolysis lignin (EHL).The largest specific surface area of 6.311 m2/g was obtained by the jet milling lignin (EHL-JM),which is far less than that of carbon black (CB) N660.The varied-treated EHL and CB were applied to reinforce acrylonitrile butadiene rubber (NBR).The results show that when the EHL-JM mass ratio is 50％,the NBR/EHL-JM/CB vulcanizate owns the best mechanical properties; its tensile strength and elongation at break are 17.28％ and 11.11％ higher than those of NBR/EHL-BM/CB,respectively.The tensile strength (20.44 MPa) and tear strength of the NBR/EHL-JM/CB blend are just 22.96％ and 12.03％ lower than those of NBR/CB vulcanizate; the elongation at break increases by 28.50 ％,reversely,revealing the vulcanizate still has good mechanical properties.However,with the ratio of EHL-JM in the composite filler system increasing,the tensile strength and tear strength of the NBR/EHL/CB blend decrease gradually.

enzymatic hydrolysis lignincarbon backacrylonitrile butadiene rubbercomposite reinforcementphysical propertiesjet milling

莫贤科、周明松、楼宏铭、杨东杰、邱学青

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华南理工大学化学与化工学院广东省绿色化学产品技术重点实验室,广东广州510640

酶解木质素 炭黑 丁腈橡胶 复合补强 力学性能 气流粉碎

国家杰出青年科学基金国家自然科学基金资助项目973项目国家国际科技合作专项

20925622210060362010CB7322052013DFA41670

2015

高分子材料科学与工程
中国石油化工股份有限公司科技开发部 国家自然科学基金委员会化学科学部 高分子材料工程国家重点实验室 四川大学高分子研究所

高分子材料科学与工程

CSTPCDCSCD北大核心EI
影响因子：0.563
ISSN：1000-7555
年,卷(期)：2015.31(1)
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