湿法混炼技术制备环烷油增塑天然橡胶/白炭黑复合材料的性能  

Properties of naphthenic oil-plasticized natural rubber/silica composites prepared by wet mixing technology

作　　者：崔凯文 张俊毅 蒋胜男 玄璐佳 卢娜[1] 桂红星[2] 王洪振[1,2] CUI Kai-wen;ZHANG Jun-yi;JIANG Sheng-nan;XUAN Lu-jia;LU Na;GUI Hong-xing;WANG Hong-zhen(College of Polymer Science and Engineering/Key Laboratory of Rubber and Plastic Materials and Engineering of Ministry of Education,Qingdao University of Science and Technology,Qingdao 266042,China;Rubber Research Institute,Chinese Academy of Tropical Agricultural Sciences,Haikou 571101,China)

机构地区：[1]青岛科技大学高分子科学与工程学院/橡塑材料与工程教育部重点实验室,山东青岛266042 [2]中国热带农业科学院橡胶研究所,海口571101

出　　处：《合成橡胶工业》2023年第3期221-227,共7页China Synthetic Rubber Industry

基　　金：国家重点研发计划项目(2022 YFD 2301202);山东省自然科学基金项目(ZR 2020 MB 041)。

摘　　要：使用优选的乳化剂对增塑剂环烷油(NAP)进行乳化,制得均一稳定的NAP乳化液,采用湿法混炼技术,使用所得的NAP乳化液与天然胶乳和白炭黑(SiO_(2))浆液制备了NAP增塑的天然橡胶(NR)/SiO_(2)(NAP/NR/SiO_(2))复合材料,研究了NAP添加量对NAP/NR/SiO_(2)复合材料门尼黏度、物理机械性能、动态力学性能、SiO_(2)分散性、耐热空气老化性能和屈挠龟裂性能的影响。结果表明,NAP/NR/SiO_(2)复合材料的门尼黏度较NR/SiO_(2)复合材料显著降低,Payne效应明显减弱,而动态力学性能和加工性能则明显提升;NAP添加量为10份(质量)时,NAP/NR/SiO_(2)复合材料的综合性能达到最佳,其拉伸强度与NR/SiO_(2)复合材料相比略微下降,而扯断伸长率则有不同程度的上升;加入NAP后,NR/SiO_(2)复合材料的耐热空气老化性能和屈挠龟裂性能得到了改善。The preferred emulsifier was used to emulsify the plasticizer naphthenic oil(NAP),and uniform and stable NAP emulsion was prepared.The NAP-plasticized natural rubber(NR)/silica(SiO_(2))(NAP/NR/SiO_(2))composite was prepared using the resulting NAP emulsion,NR latex and SiO_(2) slurry by wet mixing process,and the effects of NAP addition amount on Mooney viscosity,physical and mechanical properties,dynamic mechanical properties,dispersion of SiO_(2),thermal air aging resistance and flexural cracking property of NAP/NR/SiO_(2) composites were studied.The results showed that Mooney viscosity of NAP/NR/SiO_(2) composite was significantly lower than that of NR/SiO_(2) composite,Payne effect was significantly weakened,and dynamic mechanical properties and proces-sability improved significantly.When NAP addition amount was 10 phr(mass),NAP/NR/SiO_(2) composite had the best comprehensive performance,and tensile strength of NAP/NR/SiO_(2) composite decreased slightly,whereas elongation at break increased to varying degrees when compared with those of NR/SiO_(2) composite.Thermal air aging resistance and flexural cracking property of NR/SiO_(2) composite improved after the addition of NAP.

关 键 词：湿法混炼技术 环烷油 天然胶乳 白炭黑 复合材料 动态力学性能 耐热空气老化性能 屈挠龟裂性能 

分 类 号：TQ336.63[化学工程—橡胶工业]