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Study on the Preparation of Flame Retardant Paper with Starch-based Flame Retardant Containing Phosphorus and Nitrogen
Received:September 21, 2021  
DOI:10.11981/j.issn.1000-6842.2022.03.62
Key Words:corn nano starch;phosphoric acid;urea;flame retardant paper
Fund Project:湖南省自然科学基金项目(2020JJ4095);湖南省企业科技创新创业团队项目(201918);湖南省高新技术产业科技创新引领计划项目(2021GK4040);长沙理工大学研究生“实践创新与创业能力提升计划”项目(SJCX202188)。
Author NameAffiliationPostcode
CHEN Qijie School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha, Hu'nan Province, 410114
Hu'nan Special Paper and Paperboard Engineering Technology Research Center, Changsha, Hu'nan Province, 410114 
410114
LIU Zhuo School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha, Hu'nan Province, 410114 410114
RONG Zhi School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha, Hu'nan Province, 410114 410114
XIE Guangyang School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha, Hu'nan Province, 410114 410114
YOU Na School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha, Hu'nan Province, 410114 410114
WEI Yaqin Hu'nan Special Paper and Paperboard Engineering Technology Research Center, Changsha, Hu'nan Province, 410114
Hu'nan Guangxin Technology Co.?, Ltd.?, Shaoyang, Hu'nan Province, 422900 
422900
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Abstract:
      Starch-based flame retardant containing phosphorus nitrogen (P-CNS) was prepared by modifying corn nano starch obtained from twin screw extrusion with phosphoric acid/urea system. The flame retardant paper was prepared by impregnating flame retardant agent method, and the properties of flame retardant paper were studied by vertical combustion method, limiting oxygen index method, and thermogravimetric analysis, etc. The results showed that P-CNS had a good flame retardant effect on paper. When the P-CNS impregnation concentration was 10%, the vertical combustion residual length of the flame retardant paper reached 33.6% of the base paper, the limiting oxygen index value reached 28.2%, the char yield at 650℃ increased from 9.7% (base paper) to 23.2% in nitrogen, and the tensile and burst index were only 9.7% and 12.9% lower than those of the base paper, respectively.
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