Study of Pyrolysis Gaseous Products of Various Fibers-Relationship between Pyrolysis Products and Flame Retardancy

各种纤维热解气体产物的研究-热解产物与阻燃性能的关系

• 批准号: 07680047
• 负责人: MASUKO Fumi
• 金额: $ 1.41万
• 依托单位: Japan Women's University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07680047/
• 关键词: pyrolysis products; flame ratardancy; levoglucosan; Curie-point pyrolysis-gas chromatography; chemically modified fibers; Curie-point pyrolysis-gas Chromatography-mass spectrometry; 綿繊維; ビニルホスホナ-トオリゴマー; 難燃処理

Pyrolysis of cotton, silk and wool fabrics was studied by Curie-point pyrolysis-gas chromatography (Py-GC) and Curie-point pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS). The pyrolysis temperature for cotton samples was set 590ﾟC while that for wool and silk samples were 794ﾟC.A Py-GC chromatogram of the untreated cotton showed the formation of levoglucosan, a key intermediate in the pyrolysis of cellulose. Cotton samples treated with phosphorus flame retardants gave less levoglucosan. Moreover, the total amount of the volatile pyrolysis products decreased with increase in the phosphrus contents of the treated cotton samples. These values obtained by Py-GC were consistent with the flame retardancy attained by the treatment.Characteristic pyrolysis products from both silk and wool samples were hydrogen cyanide, acetonitrile and acrylonitrile all of which contain nitrogen. In addition to those, wool samples gave sulfur-containing hydrogen sulfide, carbonyl sulfide and methyl mercaptan by pyrolysis. Silk and wool samples treated with bromine or N-bromosuccinimide yielded bromine-containing bromomethane, bromoethane, bromophenol and bromocresol. The total amount of pyrolysis products samples decreased by the treatments. In conclusion it is demonstrated in this work that Py-GC and Py-GC-MS analyzes of chemically treated fibers are a useful tool for the evalution of flame retardancy of the treated fibers and the structural analysis of the chemically modified fibers.

采用居里点裂解-气相色谱（Py-GC）和居里点裂解-气相色谱-质谱（Py-GC-MS）研究了棉、丝、毛织物的热裂解过程。棉花样品的热解温度设定为590摄氏度，而羊毛和丝绸样品的热解温度设定为794摄氏度。未经处理的棉花的Py-GC色谱图显示形成了左旋葡聚糖，这是纤维素热解的关键中间体。用磷阻燃剂处理的棉花样品产生较少的左旋葡聚糖。此外，挥发性热解产物的总量随着处理棉样品中磷含量的增加而减少。Py-GC得到的这些值是一致的阻燃性达到的treatment.Characteristic热解产物从丝绸和羊毛样品的氰化氢，乙腈和丙烯腈，所有这些都含有氮。此外，羊毛样品热解时还产生含硫的硫化氢、硫化羰和甲基硫醚。用溴或N-溴代琥珀酰亚胺处理的丝绸和羊毛样品产生含溴的溴甲烷、溴乙烷、溴苯酚和溴甲酚。热解产物样品的总量减少的处理。总之，它表明在这项工作中，Py-GC和Py-GC-MS分析的化学处理的纤维是一个有用的工具，处理后的纤维的阻燃性的评价和化学改性纤维的结构分析。