IMPROVEMENT ON FLAME RETARDANT PROPERTY OF AUTO-FILTER PAPERS
Recently, the flame-retardant performance of auto-filter paper was greatly concerned due to an increasing requirement for public safety. Although the property can be improved to some degree by adding a large amount of flame-retardant inorganic particles into auto-filter paper during the process of papermaking, the mechanical performance of the papers is apt to prominently decrease owing to the high hygroscopicity of the inorganic particles. Therefore, in this work, the flame-retardant property of the paper was improved by changing its composition as well as the reinforcement resins. Firstly, one type of polyester fibers with excellent flame retardancy was employed to prepare the raw paper materials combing with the mercerized wood pulps. Then, the paper was reinforced by the emulsion resins which were synthesized by co-polymerizing a novel halogen-free flame retardant acrylic monomer with phosphorus moiety, phosphoric acid 2-hydroxyethyl methacrylate ester (PAHME), with styrene, acrylates through semi-continuous core/shell emulsion polymerization. The chemical structure of the resins as well as the flammability and thermal stability of the paper were characterized by FTIR, LOI measurement and TG, respectively. It was found that the flame-retardant property of the paper was obviously increased with both content of the polyester fibers and PAHME. Furthermore, the release of toxic gases into the atmosphere could be avoided due to the synergic action of the flame-retardant fibers and resins during the combustion process of the papers, which could be explained according to the condensed phase flame-retardant mechanism. Consequently, the auto-filter paper composed of the flame-retardant fibers reinforced with the flame-retardant resins exhibited excellent fire retardancy, which can be applied to enhance the safety of vehicles, electric generating sets and locomotives.
auto-filter paper fire retardancy flame retardant fiber PAHME LOI
Zhou Jing Zhou Xuesong Wang Wenxiang
State Key Laboratory of Pulp and Paper Engineering,South China University of Technology, Guangzhou,510640, China
国际会议
广州
英文
289-292
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）