共查询到19条相似文献,搜索用时 62 毫秒
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南粒度、SEM和长径比分析得出“气流磨”是硅灰石超细粉碎的最佳设备。对超细硅灰石粉体进行了表面化学改性.确定最佳工艺条件:改性剂为硬脂酸,改性剂用量2%.改性时间15~20min.改性温度70℃。探讨了超细改性硅灰石在橡胶中的应用。 相似文献
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硅灰石表面的有机化改性及其应用 总被引:3,自引:0,他引:3
本文研究了硅灰石从正丙醇-水溶液中吸附阴离子表面活性剂的吸附等温线,以及溶液中正丙醇含量和温度对吸附量的影响。测定了改性样品的物理结构和表面性质,并讨论了改性硅灰石在橡胶和涂料中的应用。 相似文献
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改性硅灰石填充PP的研究 总被引:1,自引:0,他引:1
通过对锡溶胶改性硅灰石,并将改性后的硅灰石填充于聚丙烯中的研究,表明所得50%硅灰石填充的聚丙烯复合材料,其力学性能优于40%碳酸钙填充的聚丙烯。 相似文献
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Mechanical and tribological properties of nitrile rubber filled with modified molybdenum disulphide 总被引:1,自引:0,他引:1
In this work, cetyl trimethyl ammonium bromide (CTAB), silane coupling agent (KH570) and polyethylene glycol (PEG) were used to modify the surface property of molybdenum disulphide (MoS2). MoS2/nitrile rubber (NBR) composites were directly prepared by mechanical blending. Meanwhile, the effects of loading content of MoS2, the kinds of modifiers on the mechanical and tribological properties of the composites were evaluated. The dispersion of fillers in rubber matrix and the worn surface of the composites were analysed by SEM. Results showed that the properties of MoS2/NBR composites prepared by CTAB modified MoS2 were superior to that of KH570 or PEG modified MoS2 and unmodified MoS2 because of strong opposite charges attraction between cetyl trimethyl ammonium cation and MoS2 surface. When adding 10?phr CTAB modified MoS2 in rubber matrix, the dispersion of filler was optimum, and the coefficient of friction of composite was the lowest in the prepared composites. 相似文献
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硅灰石的研究与应用进展 总被引:11,自引:0,他引:11
就硅灰石研究发展趋势分析,认为目前硅灰石的研究重点是:硅灰石的表面改性;硅灰石增强树脂基复合材料;以硅灰石为原料制白炭黑等,此外硅灰石新产品的产业化也应该引起足够的重视。 相似文献
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Nitrile rubber (NBR) compounds containing various loadings of fly ash (FA) were prepared, and their viscoelastic properties and reinforcement mechanism were investigated and compared with those of natural rubber (NR) compounds reported previously. The results obtained exhibit an increase in storage modulus (G′) with increasing FA particularly at high FA loading. By contrast, the broadness of linear viscoelastic (LVE) region is found to decrease. With the use of Guth‐Gold equation, the positive deviation of experimental values of relative modulus outward the theoretical values is observed at low strain of deformation. However, at high deformation strain, the negative deviation is found. The results imply that the presence of pseudo‐network (as formed via FA–FA and FA–NBR interactions) and the ball bearing effect provided by FA having spherical shape are responsible for the reinforcement in FA filled NBR compounds. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010 相似文献