文章信息/Info

Title:

Review on the Effect of Graphene on the Flame Retardanc and Aging Properties of Polymeric Materials  

作者:

劉世鄉(xiāng); 楊俊龍; 黃亞江; 李光憲

四川大學(xué)高分子科學(xué)與工程學(xué)院 高分子材料工程國家重點實驗室，四川 成都 610065

Author(s):

LIU Shixiang;  YANG Junlong;  HUANG Yajiang;  LI Guangxian

College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University

關(guān)鍵詞:

石墨烯; 聚合物; 阻燃; 老化; 機(jī)理; 協(xié)同; 物理化學(xué)特性

DOI:

10.7502/j.issn.1674-3962.2016.11.05

文獻(xiàn)標(biāo)志碼:

A

摘要:

石墨烯是碳原子以sp²雜化形成的、 具有六角型晶格結(jié)構(gòu)的二維片層材料, 其厚度薄、 比表面積大, 同時還具有優(yōu)異的力學(xué)、 電學(xué)、 光學(xué)和熱學(xué)等性能, 可以作為納米填料提高聚合物材料的各項物理及化學(xué)性能。闡述了石墨烯及其改性衍生物作為一種新型助劑在改善聚合物阻燃性能、 提高抗老化特性等方面中的國內(nèi)外研究進(jìn)展。 結(jié)合石墨烯的物理化學(xué)特性及改性方法, 討論了石墨烯提升聚合物阻燃性及抗老化性能的作用效果及機(jī)理, 其中包括對炭層形成的促進(jìn)作用、對氧氣或 降解產(chǎn)物的阻隔效應(yīng)、 對老化降解產(chǎn)生的過氧自由基的捕捉作用等。通過分析現(xiàn)有的研究結(jié)果, 總結(jié)了石墨烯在聚合物阻燃與抗老化應(yīng)用領(lǐng)域中的優(yōu)勢和不足之處, 并對其發(fā)展前景及有待解決的基本科學(xué)問題進(jìn)行了展望。

Abstract:

Graphene is a two-dimensional sheet material with honeycomb-like lattice structure formed by sp2 hybrid carbon atoms. Due to its excellent mechanical, electrical, optical and thermal properties, graphene has been widely used as nanofiller to improve the performances of polymer materials. In this review, the updated progress of graphene and its modified derivatives as a new type of additives in improving the flame retardant properties and the anti-aging properties of polymers were summarized. Based on the physical structure characteristics and surface chemical composition of graphene sheets, corresponding mechanisms including the promotion effect on the formation of char layer, the barrier effect of oxygen or degradation products, and the trapping effect of the peroxide free radicals produced by degradation were discussed. The synergistic effect and mechanism between graphene and other additives were also considered. The advantages and disadvantages of graphene in the field of flame retardant and anti-aging of polymers were summarized by comparing with the existing additives, and its development prospects and scientific issues to be resolved were also discussed.