化学工业

化学工业

来源出版物：Chinese Journal of Chemical Engineering，2015，23（1）： 71-75联系邮箱：Jinfu Wangwangjfu@tsinghua.edu.cn

封面介绍：近几年，对石墨烯纤维的大量研究使人们获得了很多有趣的发现，并在石墨烯纤维的合成和应用上取得了很多突破性进展.尤其是将石墨烯片组装成宏观纤维，推动了智能系统和器件的发展.其中代表性的应用包括纤维型驱动器、机器人、马达、光伏电池以及超级电容器等.目前，规模化生产石墨烯纤维的方法已经成熟，这为石墨烯纤维在未来器件中的应用打下了基础.很多原位及后处理的功能化方法赋予了石墨烯纤维新的功能和特性.但与已经发展了很长时间的碳纤维相比，石墨烯纤维的研究还在起步阶段，该领域还没有形成系统的理论，还有很多问题需要解决.例如，石墨烯纤维的机械强度和电导率有待提升.作为一种新型纤维，石墨烯纤维的机械和电学特性仍然比不上金属线和碳纤维.石墨烯纤维作为轻质导线，其电导率还是较低.总之，从微观的石墨烯合成宏观的石墨烯纤维为新材料和器件的发展提供了新的机遇.随着对石墨烯组装过程的进一步理解，在不久的将来会出现高性能的石墨烯纤维，而其新应用也将不仅是智能电子纺织物.《科技导报》2015年第3期刊登了史妍、曲良体的综述文章“石墨烯纤维研究进展”.封面为石墨烯组装结构照片，由史妍提供.

石墨烯纤维研究进展

史妍，曲良体

石墨烯具有独特的电学和力学等性能.宏观的石墨烯纤维由纳米级的石墨烯组装而成，其集成了微观石墨烯的突出性能，因而不仅具有常规纤维的柔韧性可用于纺织物，同时具有轻质、可成型加工及易于功能化等显著优势.概述了石墨烯纤维研究方面的最新进展，包括其可控制备技术、功能化及其在柔性纤维器件如驱动器、机器人、光伏电池、电容器等方面的应用.

石墨烯；纤维；可控制备

来源出版物：科技导报，2015，33（3）： 99-104联系邮箱：曲良体，lqu@bit.edu.cn

封面介绍：To enhance the process of phenyltrichlorosilane synthesis using gas phase condensation，a series of chloralkanes were introduced. The influence of temperature and amount of chloralkane on the synthesis was studied based on the product distribution from a tubular reactor. The promoting effect by addition of chloralkanes was mainly caused by the chloralkane radicals generated by dissociation of the C-Cl bond. The promoting effect of the chloromethane with more chlorine atoms was better than those with less chlorine atoms. Intermediates detected from the reactions with isoprene and bromobenzene demonstrated that both of trichlorosilyl radical and dichlorosilylene were existed in the reaction system in presence of chloralkanes. A detailed reaction scheme was proposed.（see Liu et al. Pages 71-75）.

Effect of chloralkanes on the phenyltrichlorosilane synthesis by gas phase condensation

Tong Liu，Yunlong Huang，Chao Wang，et al.

To enhance the process of phenyltrichlorosilane synthesis using gas phase condensation，a series of chloralkanes were introduced. The influence of temperature and chloralkane amount on the synthesis was studied based on the product distribution from a tubular reactor. The promoting effect of chloralkane addition was mainly caused by the chloralkane radicals generated by the dissociation of C-Cl bond. The promoting effect of the chloromethane withmore chlorine atomswas better than thosewith less chlorine atoms. Intermediates detected fromthe reactions with isoprene and bromobenzene demonstrated that both trichlorosilyl radical and dichlorosilylene existed in the reaction system in the presence of chloralkanes. A detailed reaction scheme was proposed.

Phenyltrichlorosilane； Gas phase condensation； Chloralkane； Reaction mechanism； Radical； Synthesis