硅烷偶联剂改性埃洛石纳米管的表征和增强丁苯橡胶的研究

采用双-[γ-（三乙氧基硅）丙基]-四硫化物（Si69）对埃洛石纳米管（Halloysite nanotubes．HNTs）进行表面改性，通过一系列测试方法（TGA，XPS，接触角测定）对改性效果进行表征，同时采用直接共混法制备了丁苯橡胶（SBR）／改性埃洛石（m—HNTs）复合材料，并对m—HNTs对混炼胶硫化特性和硫化胶力学性能的影响进行了研究。结果表明：m—HNTs的改性效果显著，可以缩短硫化时间，提高复合材料的力学性能，说明Si69改性的HNTs可以有效改善橡胶基体与填料之间的界面结合。

Characterizations of Halloysite Nanotubes modified with Si69 and the Study on the reinforced Styrene-Butadiene Rubber

Halloysite nanotubes （HNTs） were modified with Bis-[- 3- （triethoxysilyl）-propyl]-tetrasulfide （Si69）,and the modified effects were characterized by using some testing methods such as thermogravimetric analysis （TGA）, X-ray photoelectron spectroscopy （XPS） and determinations of surface area and contact angle, and the SBR/the modified HNTs （m-HNTs） composite was prepared by using direct blending process. The effects of m-HNTs on the curing characteristics of the blend and the mechanical properties of the vulcanizate were studied. The results showed that the m-HNTs could decrease the vulcanization time and obviously improve the mechanical properties of the vulcanizate. That was indicated that the m-HNTs could modified the interfacial bonding between the vulcanizate and the used fillers .