Graphene for flame-retarding elastomeric composite foams having strong interface

被引：30

作者：

Araby, Sherif ^{[1
,2
,4
]}

Li, Jihui ^{[3
]}

Shi, Ge ^{[1
,2
]}

Ma, Zheng ^{[3
]}

Ma, Jun ^{[1
,2
,3
]}

机构：

[1] Univ South Australia, Sch Engn, Mawson Lakes, SA 5095, Australia

[2] Univ South Australia, Future Ind Inst, Mawson Lakes, SA 5095, Australia

[3] Hebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050024, Hebei, Peoples R China

[4] Benha Univ, Benha Fac Engn, Dept Mech Engn, Banha, Egypt

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2017年 / 101卷

基金：

澳大利亚研究理事会;

关键词：

Graphene; Composites; Polyvinyl alcohol; Foams; MECHANICAL-PROPERTIES; EPOXY COMPOSITES; POLYMER COMPOSITES; FUNCTIONALIZED GRAPHENE; CARBON NANOTUBES; NANOCOMPOSITES; GRAPHITE; PERFORMANCE; OXIDE; RETARDANTS;

D O I：

10.1016/j.compositesa.2017.06.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is a great challenge to make elastomeric polymer foams antistatic, flame-retardant and mechanically robust. The challenge was addressed herein by in situ polymerizing polyvinyl alcohol, formaldehyde and graphene sheets. The graphene sheets - each in average being similar to 5 nm thick - had a carbon to oxygen atomic ratio of 9.8 and a Raman I-D/I-C of 0.03. The sheets proved to react with formaldehyde building up a strong interface for the composites, and the reaction promoted the exfoliation and dispersion of graphene sheets in the matrix. They were found to create a large number of fine pores to the composites. Graphene sheets at 0.12 vol% increased the foam water retention rate from 346% to 784%. These composites had a percolation threshold of electrical conductivity at 0.023 vol%. The composites reached a limiting oxygen index of 59.4, implying an exceptional self-extinguishing performance. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：254 / 264

页数：11

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