木质素接枝白炭黑杂化填料对其天然橡胶复合材料性能的影响  

Effect of Lignin Grafted Silica Hybrid Filler on Properties of Its NR Composites

作　　者：耿传宝 张苏 韩林峰 张林 陈海明[1] 刘扶民 林广义[1] GENG Chuanbao;ZHANG Su;HAN Linfeng;ZHANG Lin;CHEN Haiming;LIU Fumin;LIN Guangyi(Qingdao University of Science and Technology,Qingdao 266061,China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061

出　　处：《橡胶工业》2024年第10期731-737,共7页China Rubber Industry

基　　金：山东省重点研发计划(重大科技创新工程)项目(2020CXGC010312);海洋科技协同创新中心项目(22-05-CXZX-04-04-28);生物基材料与绿色造纸国家重点实验室开放基金资助项目(GZKF202209);青岛科技大学研究生自主科研创新项目(S2022KY015)。

摘　　要：将硅烷偶联剂KH550改性木质素与硅烷偶联剂KH560改性白炭黑(SiO_(2))接枝聚合制备木质素接枝SiO_(2)杂化填料(记为木质素@SiO_(2)),并采用绿色化学湿法混炼工艺制备木质素@SiO_(2)/天然橡胶(NR)复合材料,研究木质素@SiO_(2)的木质素/SiO_(2)用量比对木质素@SiO_(2)/NR复合材料性能的影响。结果表明:随着木质素@SiO_(2)的木质素/SiO_(2)用量比的增大,木质素@SiO_(2)/NR复合材料的t_(10)和t_(90)缩短,邵尔A型硬度呈减小趋势;木质素/SiO_(2)用量比为6/9的木质素@SiO_(2)/NR复合材料的拉伸强度最大和DIN磨耗量最小,分别为27.6 MPa和101.42 mm^(3);木质素/SiO_(2)用量比为12/3的木质素@SiO_(2)/NR复合材料的拉断伸长率最大和撕裂强度较大,分别为587%和83 kN·m^(-1);热空气老化后木质素@SiO_(2)/NR复合材料的拉伸强度变化率和拉断伸长率变化率绝对值呈减小趋势。木质素/SiO_(2)用量比为3/12的木质素@SiO_(2)/NR复合材料的抗湿滑性能较好,滚动阻力较小。The lignin grafted silica(SiO_(2))hybrid filler(referred to as lignin@SiO_(2))was prepared by graft polymerization of lignin modified with silane coupling agent KH550 and SiO_(2) modified with silane coupling agent KH560.The lignin@SiO_(2)/natural rubber(NR)composites were prepared by green chemical wet mixing process,and the effect of lignin/SiO_(2) dosage ratios of the lignin@SiO_(2) on the properties of the lignin@SiO_(2)/NR composites.The results showed that,with the increasing of lignin/SiO_(2) dosage ratio of the lignin@SiO_(2),the t_(10) and t_(90) of the lignin@SiO_(2)/NR composite were shortened,and the Shore A hardness presented a decreasing trend.The lignin@SiO_(2)/NR composite with lignin/SiO_(2) dosage ratio of 6/9 had the largest tensile strength and the smallest DIN wear,which were 27.6 MPa and 101.42 mm^(3),respectively.The lignin@SiO_(2)/NR composite with lignin/SiO_(2) dosage ratio of 12/3 had the largest tensile elongation and larger tear strength,which were 587%and 83 kN·m^(-1),respectively.The absolute values of the tensile strength change rate and elongation at break change rate of the lignin@SiO_(2)/NR composite showed a decreasing trend after hot air aging.The lignin@SiO_(2)/NR composite with lignin/SiO_(2) dosage ratio of 3/12 had better wet slip resistance and lower rolling resistance.

关 键 词：木质素 白炭黑 天然橡胶 物理性能 动态力学性能 

分 类 号：TQ330.383[化学工程—橡胶工业]