Modification of POSS hybrids by ionic liquid simultaneously prolonging time to ignition and improving flame retardancy for polystyrene

doi:10.1007/s10965-020-02081-w

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	Modification of POSS hybrids by ionic liquid simultaneously prolonging time to ignition and improving flame retardancy for polystyrene
	Guo, Yongliang; Cui, Jinfeng; Guo, Junhong; Zhang, Haojun; Wang, Lurong; Yang, Baoping
刊名	Journal of Polymer Research
	2020-04-01
卷号	27 期号:4
关键词	Fire hazards Free radicals Gravimetric analysis Oligomers Polystyrenes Scanning electron microscopy Smoke Thermogravimetric analysis Cone calorimeter Flame retardancy Free radical copolymerization Heat Release Rate (HRR) Physical barriers Polyhedral oligomeric silsesquioxanes Thermal gravimetric analysis Time to ignition
ISSN号	10229760
DOI	10.1007/s10965-020-02081-w
英文摘要	Polystyrene (PS) with great flame retardancy has been achieved by addition of polyhedral oligomeric silsesquioxane (POSS). However, the POSS/PS composite showed easy-ignition behavior leading to fire hazard exposed. Aiming to prolong time to ignition (TTI) and improve flame retardancy simultaneously, using non-flammable modifier to decorate POSS is a facile method. Here, two kinds of POSS hybrids (POSS-ILs), denoted as POSS-EVIM and POSS-VIPSP, were synthesized by free radical copolymerization between vinyl POSS and two kinds of ionic liquid, commercial [EVIm]BF4 and Brønsted ionic liquid, respectively. The polystyrene-based composites (POSS-ILs/PS) were prepared by incorporated POSS-ILs into polystyrene. The results of thermal gravimetric analysis test evidenced that both POSS-ILs increased char yield and decreased decomposed rate of composites. Compared with neat PS, the TTI of POSS-ILs/PS was prolonged by 26 s and 21 s, and meanwhile, the fire hazard was decreased due to reduction of peak value of heat release rate (PHRR) and smoke release rate (PSPR) in cone calorimeter test. Scanning electron microscope observed compact residue of POSS-EVIM/PS and honeycombed residual morphology of POSS-VIPSP/PS, and additionally, both of these residual char possessed higher degree of graphitization than that of PS and POSS/PS in Raman spectrum, suggesting good physical barrier for matrix from heat and oxygen. Besides, the flexural strength of both POSS-ILs/PS composites were increased compared with neat PS. Taking the results above mentioned, POSS modified by ionic liquid can be a decent candidate to prolong time to ignition, simultaneously improve fire safety and mechanical properties for polymeric materials. © 2020, The Polymer Society, Taipei.
WOS研究方向	Polymer Science
语种	英语
出版者	Springer Science and Business Media B.V.
WOS记录号	WOS:000521958900001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150820]
专题	图书馆石油化工学院实验室建设与管理处
作者单位	Department of Chemical Engineering, College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Guo, Yongliang,Cui, Jinfeng,Guo, Junhong,et al. Modification of POSS hybrids by ionic liquid simultaneously prolonging time to ignition and improving flame retardancy for polystyrene[J]. Journal of Polymer Research,2020,27(4).
APA	Guo, Yongliang,Cui, Jinfeng,Guo, Junhong,Zhang, Haojun,Wang, Lurong,&Yang, Baoping.(2020).Modification of POSS hybrids by ionic liquid simultaneously prolonging time to ignition and improving flame retardancy for polystyrene.Journal of Polymer Research,27(4).
MLA	Guo, Yongliang,et al."Modification of POSS hybrids by ionic liquid simultaneously prolonging time to ignition and improving flame retardancy for polystyrene".Journal of Polymer Research 27.4(2020).