Preparation of Novel Imogolite-filled Rubber Composite

新型伊毛缟石填充橡胶复合材料的制备

• 批准号: 08650797
• 负责人: IKEDA Yuko
• 金额: $ 1.22万
• 依托单位: Kyoto Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650797/
• 关键词: Imogolite; Filler; Rubber; Inorganic polymer; Mechanical property; Rainforcement; Vulcalization; Powder; 充填剤; 補強

Imogolite, which was natural inorganic polymer, was purified from the soil of weathered pumice bed in Hanamaki of Yuwate. The purified imogolite was filled in the stirene-butadiene rubber (SBR) vulcanizates and its reinforcement effect was evaluated. From the results of thermogravimetric analysis of imogolite, imogolite was found to be hydrophylic and was liable to absorb water in air. Then, diethylene glycol (DG) was added for the preparation of the imogolite-mixed SBR compounds. The presence of DG influenced the cure behavior as well as DG for silica-mixed SBR compound, i.e., the curing time became shorter and the maximum of the torque became larger than those of the system without DG.The increase of the amount of the filled imogolite brought to the increase of the modulus, tensile strength at break and elongation at break. However, the degree of reinforcement effect of imogolite was smaller than those of Kaolin clay and silica. It was comparable with that of aluminum hydroxide. Young modulus of the imogolite-filled SBR vulcanizate was higher than that of aluminum hydroxide, and the storage modulus obtained from the dynamic mechanical analysis of the imogolite-filled SBR vulcanizate was also larger than those of Kaolin clay and aluminum hydroxide. At low defamation range, the reinforcement effect of imogolite is concluded to be high. Form the transmission electron microscopy observation, the particle size of imogolite was observed to be about 0.3 mum - 1.5 mum, which means that imogolite used in this study was larger than those of silica and Kaolin clay. Therefore, the much more powdering of imogolite should bring to the more excellent reinforcement effect for the rubber vulcanizate.

从Yuwate花卷风化浮石层土壤中提纯得到天然无机聚合物伊毛戈兰。将提纯后的伊毛戈兰填充到丁苯橡胶（SBR）硫化胶中，评价其补强效果。热重分析结果表明，伊毛戈兰石为层状，在空气中易吸水。然后，加入二甘醇（DG）用于制备伊毛沸石混合SBR化合物。DG的存在影响硫化行为以及混硅SBR胶料的DG，即，与不含DG的体系相比，固化时间缩短，扭矩最大值增大，模量、断裂拉伸强度和断裂伸长率随填充伊毛戈兰含量的增加而增加。但伊毛石的增强作用程度小于高岭土和二氧化硅。其与氢氧化铝相当。结果表明，填充的SBR硫化胶的杨氏模量高于氢氧化铝，动态力学分析得到的储能模量也大于高岭土和氢氧化铝。在低变形范围内，伊毛戈兰的加固效果较高。从透射电子显微镜观察，观察到的伊毛戈兰的粒径为约0.3 μ m- 1.5 μ m，这意味着在本研究中使用的伊毛戈兰大于二氧化硅和高岭土。因此，伊毛戈兰粉化程度越高，对橡胶硫化胶的补强效果越好。