BROWSE

Related Scientist

Researcher

Karel Goossens
다차원 탄소재료 연구단
more info

Lightweight and Ultrastrong Polymer Foams with Unusually Superior Flame Retardancy

Cited 0 time in webofscience Cited 0 time in scopus
197 Viewed 10 Downloaded
Title
Lightweight and Ultrastrong Polymer Foams with Unusually Superior Flame Retardancy
Author(s)
Linli Xu; Linhong Xiao; Pan Jia; Karel Goossens; Peng Liu; Hui Li; Chungui Cheng; Yong Huang; Christopher W. Bielawski; Jianxin Geng
Publication Date
2017-08
Journal
ACS Applied Materials & Interfaces, v.9, no.31, pp.26392 - 26399
Publisher
AMER CHEMICAL SOC
Abstract
High-performance flame-retardant materials are urgently needed to address outstanding issues that pertain to safety. Traditional flame retardants are toxic to the environment and/or lack the physical properties required for use in many contemporary applications. Here, we show that isocyanate-based polyimide (PI) foam, a flammable material, can exhibit unusually superior flame retardancy as well as, other excellent properties, such as being lightweight and displaying high mechanical strength, by incorporating red phosphorus (RP)-hybridized graphene. The covalent bonds formed between the graphene platelets and the PI matrix provide the resultant PI foam with a specific Young's modulus (83 kNm kg(-1)) that is comparable to or even higher than those displayed by state-of-the-art foams, including silica aerogels, polystyrene foams, and polyurethane foams. In addition, even a low content of the RP -hybridized graphene (2.2 wt %) results in an exceptionally higher limiting oxygen index (39.4) than those of traditional flame-retardant polymer-based materials (typically 20-30). The resultant PI foam also exhibits thermal insulation properties that are similar to that of air. Moreover, the RP -hybridized graphene is prepared using a one-step ball milling process in 100% yield, and does not require solvent or produce waste. The preparation of the flame-retardant PI foams can be scaled as the starting materials are commercially available and the techniques employed are industrially compatible. © 2017 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/3873
ISSN
1944-8244
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > Journal Papers (저널논문)
Files in This Item:
2. acsami.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse