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Carbon Nanotube/Epoxy Composites for Improved Fire Safety
Wang, Qi1,2,3,4,5; Su, Dang Sheng3,4; Wang, De-Yi1
Corresponding AuthorWang, De-Yi(deyi.wang@imdea.org)
2020-05-22
Source PublicationACS APPLIED NANO MATERIALS
ISSN2574-0970
Volume3Issue:5Pages:4253-4264
AbstractPristine 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.
Keywordcarbon nanotube/epoxy composite fire safety free radical scavenging effect carbon-centered free radical mechanical properties
Funding OrganizationChina Scholarship Council
DOI10.1021/acsanm.0c00423
Indexed BySCI
Language英语
Funding ProjectChina Scholarship Council[201706340114]
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000537534900028
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139160
Collection中国科学院金属研究所
Corresponding AuthorWang, De-Yi
Affiliation1.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
Recommended Citation
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.
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