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首页> 外文期刊>Journal of Applied Polymer Science >New method for preparing polybutadiene rubber/clay composites
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New method for preparing polybutadiene rubber/clay composites

机译：制备聚丁二烯橡胶/粘土复合材料的新方法

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Polybutadiene rubber (BR)/clay/dimethyl dihydrogenatetallow ammonium chloride (DDAC) composites were prepared by a new preparation method named in situ organic modification. That is, BR, pristine clay, and quaternary ammonium salt were directly melt-mixed without the usual pretreatment of the pristine clay with an intercalatant. BR/pristine clay, BR/organoclay DK4 (modified with DDAC), and BR/clay/DDAC composites were analyzed with X-ray diffraction, scanning electron microscopy, and thermogravimetric analysis. The vulcanization characteristics and mechanical properties of the BR/pristine clay, BR/DK4, and BR/clay/DDAC composites were investigated. Finally, the effects of the processing conditions, clay/DDAC ratio, and clay content on the structure and properties of the BR/clay/DDAC composites were investigated. The results showed that intercalated BR/clay/DDAC composites were prepared. Organoclay DK4 and clay/DDAC effectively accelerated the vulcanization reaction of BR, which was attributed to the existence of the intercalatant used to modify the clay. The tensile strength, elongation at break, and tear strength of the BR/clay/DDAC vulcanizates were greatly improved in comparison with those of gum BR and BR/pristine clay vulcanizates but were somewhat lower than those of BR/DK4 vulcanizates. The dispersion of clay particles in the BR/clay/DDAC and BR/DK4 composites was much better than that in the BR/pristine clay composite. The temperature at the thermal degradation peak of the BR/clay/DDAC composite obviously increased in comparison with those of the gum BR, BR/clay and BR/DK4 composites. The mixing temperature and rotor speed had remarkable effects on the structure and properties of the BR/clay/DDAC composite. (c) 2005 Wiley Periodicals, Inc.
机译：采用一种称为原位有机改性的新制备方法，制备了聚丁二烯橡胶（BR）/粘土/二甲基二氢牛脂氯化铵（DDAC）复合材料。即，将BR，原始粘土和季铵盐直接熔融混合，而无需通常用嵌入剂对原始粘土进行预处理。用X射线衍射，扫描电子显微镜和热重分析法对BR /原始粘土，BR /有机粘土DK4（用DDAC改性）和BR /粘土/ DDAC复合材料进行了分析。研究了BR /原始粘土，BR / DK4和BR /粘土/ DDAC复合材料的硫化特性和力学性能。最后，研究了加工条件，粘土/ DDAC比和粘土含量对BR /粘土/ DDAC复合材料结构和性能的影响。结果表明，制备了插层的BR /粘土/ DDAC复合材料。有机粘土DK4和粘土/ DDAC有效地促进了BR的硫化反应，这归因于用于改性粘土的插层剂的存在。与口香糖BR和BR /原始粘土硫化橡胶相比，BR /粘土/ DDAC硫化橡胶的拉伸强度，断裂伸长率和撕裂强度大大提高，但略低于BR / DK4硫化橡胶。在BR /粘土/ DDAC和BR / DK4复合材料中，粘土颗粒的分散性要比在BR /原始粘土复合材料中好得多。与口香糖BR，BR /粘土和BR / DK4复合材料相比，BR /粘土/ DDAC复合材料的热降解峰温度明显升高。混合温度和转子转速对BR /粘土/ DDAC复合材料的结构和性能有显着影响。 （c）2005年Wiley Periodicals，Inc.

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