The invention relates to the technical field of tire rubber manufacturing, and discloses a rubber composition containing modified lignin and a mixing method thereof, and the rubber composition is added with the modified lignin. The modified lignin is water-soluble lignin obtained by modifying lignin by grafting citric acid groups. Citric acid is adopted to modify lignin, a citric acid group is grafted on a lignin group under the catalytic action of sodium hypophosphite to enhance the hydrophilicity of the lignin group, and wet mixing is combined to effectively improve the dispersity of the lignin in rubber and reduce the rolling resistance of the rubber composition, and meanwhile, the added lignin can enhance the strength of a rubber network, so that the rolling resistance of the rubber composition is improved. The tensile property of the rubber is improved.
本发明涉及轮胎橡胶制造技术领域,公开了一种含改性木质素的橡胶组合物及其混炼方法,该橡胶组合物中添加了改性木质素。所述改性木质素是木质素经接枝柠檬酸基团改性得到的水溶性木质素。采用柠檬酸对木质素进行改性,在次磷酸纳的催化作用下在木质素基团上接枝柠檬酸基团增强其亲水性,并结合湿法混炼有效,有效提高木质素在橡胶中的分散性,降低橡胶组合物的滚动阻力,同时木质素的添加能够增强橡胶网络强度,提升橡胶的拉伸性能。
Rubber composition containing modified lignin and mixing method thereof
一种含改性木质素的橡胶组合物及其混炼方法
25.04.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | C08H DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS , Derivate von natürlichen makromolekularen Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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