化學工業(yè)

來源出版物：Chinese Journal of Chemical Engineering，2015，23（1）： 71-75聯(lián)系郵箱：Jinfu Wangwangjfu@tsinghua.edu.cn

封面介紹：近幾年，對石墨烯纖維的大量研究使人們獲得了很多有趣的發(fā)現(xiàn)，并在石墨烯纖維的合成和應用上取得了很多突破性進展.尤其是將石墨烯片組裝成宏觀纖維，推動了智能系統(tǒng)和器件的發(fā)展.其中代表性的應用包括纖維型驅(qū)動器、機器人、馬達、光伏電池以及超級電容器等.目前，規(guī)?；a(chǎn)石墨烯纖維的方法已經(jīng)成熟，這為石墨烯纖維在未來器件中的應用打下了基礎.很多原位及后處理的功能化方法賦予了石墨烯纖維新的功能和特性.但與已經(jīng)發(fā)展了很長時間的碳纖維相比，石墨烯纖維的研究還在起步階段，該領(lǐng)域還沒有形成系統(tǒng)的理論，還有很多問題需要解決.例如，石墨烯纖維的機械強度和電導率有待提升.作為一種新型纖維，石墨烯纖維的機械和電學特性仍然比不上金屬線和碳纖維.石墨烯纖維作為輕質(zhì)導線，其電導率還是較低.總之，從微觀的石墨烯合成宏觀的石墨烯纖維為新材料和器件的發(fā)展提供了新的機遇.隨著對石墨烯組裝過程的進一步理解，在不久的將來會出現(xiàn)高性能的石墨烯纖維，而其新應用也將不僅是智能電子紡織物.《科技導報》2015年第3期刊登了史妍、曲良體的綜述文章“石墨烯纖維研究進展”.封面為石墨烯組裝結(jié)構(gòu)照片，由史妍提供.

石墨烯纖維研究進展

史妍，曲良體

石墨烯具有獨特的電學和力學等性能.宏觀的石墨烯纖維由納米級的石墨烯組裝而成，其集成了微觀石墨烯的突出性能，因而不僅具有常規(guī)纖維的柔韌性可用于紡織物，同時具有輕質(zhì)、可成型加工及易于功能化等顯著優(yōu)勢.概述了石墨烯纖維研究方面的最新進展，包括其可控制備技術(shù)、功能化及其在柔性纖維器件如驅(qū)動器、機器人、光伏電池、電容器等方面的應用.

石墨烯；纖維；可控制備

來源出版物：科技導報，2015，33（3）： 99-104聯(lián)系郵箱：曲良體，lqu@bit.edu.cn

封面介紹：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