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Effects of Magnesium Hydroxide on Combustion Products of Polystyrene
Yong-hua Hu ,Xu Han ,Rui Tan ,Shu-fen Li*
Author NameAffiliation
Yong-hua Hu State Key Laboratory of Fire Science, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China 
Xu Han State Key Laboratory of Fire Science, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China 
Rui Tan State Key Laboratory of Fire Science, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China 
Shu-fen Li* State Key Laboratory of Fire Science, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China 
Abstract:
Pure polystyrene (PS) and PS composites containing magnesium hydroxide (Mg(OH)2) were burned in alaboratory-scale combustion chamber. The analyses of combustion products were carried out by gas chromatography and gas chromatography/mass spectrometry. The results indicate that the effects of Mg(OH)2 on combustion products of PS are obvious. With the increase of Mg(OH)2, the concentration of CO2 gradually reduces, and the majority of the volatile and semivolatile organic products, especially styrene monomer and some polycyclic compounds, take on increasing tendencies. Furthermore, the content of coke in residue also obviously increases because of the enhancement of Mg(OH)2. All the changes seem to imply that the presence of Mg(OH)2 alters reaction pathways during the combustion of PS, promotes incomplete combustion and decreases combustibility of PS.
Key words:  Polystyrene, Magnesium hydroxide, Combustion products, GC/MS
FundProject:
氢氧化镁对聚苯乙烯燃烧产物的影响
胡永华 ,韩旭 ,谭锐 ,李疏芬*
摘要:
聚苯乙烯和含阻燃剂氢氧化镁的聚苯乙烯复合物在气密性良好的燃烧室中燃烧,燃烧产物分别采用气相色谱和气相色谱/质谱进行分析.结果表明,氢氧化镁对聚苯乙烯燃烧产物有明显的影响.随着氢氧化镁含量的增加,二氧化碳的浓度逐渐降低;残渣中焦碳的含量以及大多数的挥发性和半挥发性有机产物,尤其是聚苯乙烯单体和一些多环化合物明显增加.这意味着氢氧化镁的存在改变了聚苯乙烯的燃烧反应路径,导致了聚苯乙烯的不完全燃烧,降低了可燃性.
关键词:  聚苯乙烯,氢氧化镁,燃烧产物,气相色谱/质谱
DOI:10.1360/cjcp2007.20(2).185.6
分类号: