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In this paper, melamine (C 3 H 6 N 6) is modified by ionic liquid 1 - butyl - 3 –methylimidazolium hexafluorophosphate ([BMIM] PF 6) and studied of modified melamine foam retardant effect of rigid polyurethane foam. 1 Experimental 1.1 Main raw materials [BPy]PF6 (China Academy of Sciences Lanzhou Institute of Chemical Physics Centre for green chemistry); Polyisocyanate (black material), Shenyang Metro insulation plant; Polyether (including polyether polyols, water, catalysts, surfactants and other additives, etc., white material), Shenyang Metro insulation plant. 1.2 Main instruments JF-3 oxygen index determinator: NanJing Jiangning District Analytical Instrument Factory CZF-3 horizontal and vertical burning determinator: NanJing Jiangning District of Nanjing Analytical Instrument Factory; HCT-1 integrated thermal analyzer: Beijing Hengjiu Scientific Instrument; 1.3 Sample Preparation 1.3.1 Preparation of melamine modified by ionic liquid [9] A certain ionic liquid [BMIM
Next, a certain mass percentage modified melamine (relative to white materials) were weighed accurately and added to the white materials, Then poured black material into the white materials, and mix evenly.
N 2atmosphere, temperature range: 22 ~ 800℃, heating rate: 20 ℃/ min. 2 Results and discussion 2.1the effect of quantity of melamine on the oxygen index of rigid polyurethane foam Oxygen Index is an indicator for combustibility of polymer, and oxygen index method is a quantitative experimental method to measure the flame retardant properties of polymer materials.
Acknowledgements The corresponding author of this paper is Li yanwei Literature References [1]Shu ying Wu,Yun sheng Ding,Xiao min Zhang,Hai ou Tang,Long Chen,Bo xuan Li: Journal of Solid StateChemistry,Vol.181(2008),p. 2171-2177 [2]M.D.
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Shaban2,e 1Department of Physics, College of Education for pure Sciences Ibn Al-Haitham, University of Baghdad, Baghdad, Iraq. 2College of Science, University of Baghdad, Baghdad, Iraq.
Samples were prepared using solid state reaction technique, suitable oxides alternatives of Tl2O3, NiO, SrO, CaO, BaO and CuO with 99.99% purity as raw materials and then mixed.
Even within completely crystalline materials, the degree of structural perfection can vary from one material to another depending on the method of preparation and purity.
Series: Materials Science and Engineering 871, (2020): 012079
Alwan, Materials Science and Technology (MS&T) October 25-29, (2009), Pittsburgh, Pennsylvania Copyright © 2009 MS&T’09® General Poster Session, (USA)

Design and Optimization of a New Micro-hotplate for Gas Sensor Guoguang Wang1, a, Xiaobo Zhang1, b , Changbai Liu2, c and Li Liu*1, d 1 State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, PR China 2 College of Electronic Science & Engineering, Jilin University, Changchun 130012, PR China a262683835@qq.com, bhualuowuhen518@163.com, c360367297@qq.com, dliul99@jlu.edu.cn Keywords: micro-hotplate; Finite element analysis; MEMS; temperature distributing.
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Moreover increasing interest raised in the last decades on materials for Additive Manufacturing (AM).
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