Carbon Nanotube/Epoxy Composites for Improved Fire Safety

doi:10.1021/acsanm.0c00423

CORC > 金属研究所 > 中国科学院金属研究所

	Carbon Nanotube/Epoxy Composites for Improved Fire Safety
	Wang, Qi 1,2,3,4,5; Su, Dang Sheng 3,4; Wang, De-Yi 1
刊名	ACS APPLIED NANO MATERIALS
	2020-05-22
卷号	3 期号:5 页码:4253-4264
关键词	carbon nanotube/epoxy composite fire safety free radical scavenging effect carbon-centered free radical mechanical properties
ISSN号	2574-0970
DOI	10.1021/acsanm.0c00423
通讯作者	Wang, De-Yi(deyi.wang@imdea.org)
英文摘要	Pristine carbon nanotubes (CNTs) were treated to make them rich in carbon-centered free radicals. CNTs with various contents of carbon-centered free radicals were characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and electron paramagnetic resonance (EPR). The CNTs were used to reinforce epoxy resins, and the fire safety (limited oxygen index (LOI), vertical burning test (UL-94), and cone calorimeter test) and mechanical performances (tensile properties, impact strength, and dynamic mechanical analysis (DMA)) of the obtained composites were tested. It was found that the carbon-centered free radical-rich CNTs increased the LOI value of the epoxy matrix dramatically and exhibited obvious advantages over the other CNTs. In addition, the carbon-centered free radical-rich CNTs also had the best reinforcing effect on the mechanical properties. Based on comparison experiments and attempts at correlating the fire performance of the composite with the free radical content and edge content of the CNTs, the improved fire safety was attributed to the free radical scavenging effect of the numerous dangling bonds on the carbon-centered free radical-rich CNTs. In situ EPR experiments revealed the evolution of the free radical scavenging effect during the thermal decomposition of the composite. Carbon-centered free radical-rich CNTs were found to retard the development of fire in the initial period.
资助项目	China Scholarship Council[201706340114]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000537534900028
资助机构	China Scholarship Council
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/139159]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, De-Yi
作者单位	1.IMDEA Mat Inst, Madrid 28906, Spain 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 4.Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 5.Univ Politecn Madrid, Madrid 28040, Spain
推荐引用方式 GB/T 7714	Wang, Qi,Su, Dang Sheng,Wang, De-Yi. Carbon Nanotube/Epoxy Composites for Improved Fire Safety[J]. ACS APPLIED NANO MATERIALS,2020,3(5):4253-4264.
APA	Wang, Qi,Su, Dang Sheng,&Wang, De-Yi.(2020).Carbon Nanotube/Epoxy Composites for Improved Fire Safety.ACS APPLIED NANO MATERIALS,3(5),4253-4264.
MLA	Wang, Qi,et al."Carbon Nanotube/Epoxy Composites for Improved Fire Safety".ACS APPLIED NANO MATERIALS 3.5(2020):4253-4264.