木质素粉末化改性及其在BIIR中的应用

杨军　 王迪珍　 罗东山　

摘　要：研究了丙酮改性对木质素粉末化工艺及BIIR补强效果的影响。试验结果表明，丙酮改性可降低湿态羟甲基化木质素体系的枯度，并可显著减小干态羟甲基化木质素聚集体的粒径，提高其粉末化程度，但对木质素的回收率影响很小。干态改性木质素的粉末化程度是影响硫化胶各项力学性能的重要因素，丙酮改性可使羟甲基化木质素对硫化胶的补强作用显著增强。
关键词：木质素；粉末化改性；BIIR；丙酮；补强作用
分类号：TQ330.38+3;TQ333.6　文献标识码：B
文章编号：1000-890X(2000)11-0643-04

Application of modified lignin powder to BIIR

YANG Jun ,WANG Di-zhen ,LUO Dongshan
(South China University of Technology,Guangzhou 510640,China)

Abstract：The effect of the lignin powder modified by acetone on the reinforcement to BIIR was investigated.The test results showed that the viscosity of hydroxymethylated lignin water suspension was significantly decreased,the aggregate size of dry hydroxymethylated lignin was remarkably reduced promoting the powdering process of lignin and the recovery was decreased very little by modifying the lignin with acetone.It was found through the comparison for physical properties of the vulcanizates that the reinforcement of hydroxymethylated lignin was significantly increased by the modification with acetone.
Keywords：lignin;BIIR;acetone;reinforcement;modification