Preparation and Characterization of Ammonium Polyphosphate/Diatomite Composite Fillers and Assessment of their Flame-retardant Effects on Paper
Ammonium polyphosphate (APP) was synthesized by heating a mixture of phosphoric acid and urea, and APP/diatomite composite flame-retardant fillers were prepared by two methods: mixing and in situ polymerization. Flame-retardant paper was made by adding the prepared composite fillers to paper. The AP...
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North Carolina State University
2014-04-01
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doaj-d1866cebf4904cf49bd76a2954661c2d2020-11-24T20:53:49ZengNorth Carolina State UniversityBioResources1930-21261930-21262014-04-01923104311610.15376/biores.9.2.3104-3116Preparation and Characterization of Ammonium Polyphosphate/Diatomite Composite Fillers and Assessment of their Flame-retardant Effects on PaperLizheng Sha0Kefu Chen1South China University of Technology; Zhejiang University of Science and TechnologySouth China University of TechnologyAmmonium polyphosphate (APP) was synthesized by heating a mixture of phosphoric acid and urea, and APP/diatomite composite flame-retardant fillers were prepared by two methods: mixing and in situ polymerization. Flame-retardant paper was made by adding the prepared composite fillers to paper. The APP and APP/diatomite composite fillers were characterized by XRD, 31PNMR, SEM, FTIR, and TG. The flame retardation of paper containing these composite fillers was determined. Results showed that the prepared APP had a minimum solubility when the molar ratio of phosphoric acid to urea was 1:1.8. Under these conditions, its degree of polymerization was 91.21. After mixing and in situ polymerization, a large amount of APP was adsorbed into the surface of the diatomite. These two APP/diatomite composite fillers had similar thermal stabilities, but the flame retardation of paper containing in situ polymerized composite filler was better than that of paper containing the composite filler obtained by mixing.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_09_2_Sha_Chen_Ammonium_Flame_RetardantAmmonium polyphosphateDiatomiteIn situ polymerizationComposite flame-retardant fillerFlame retardation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lizheng Sha Kefu Chen |
spellingShingle |
Lizheng Sha Kefu Chen Preparation and Characterization of Ammonium Polyphosphate/Diatomite Composite Fillers and Assessment of their Flame-retardant Effects on Paper BioResources Ammonium polyphosphate Diatomite In situ polymerization Composite flame-retardant filler Flame retardation |
author_facet |
Lizheng Sha Kefu Chen |
author_sort |
Lizheng Sha |
title |
Preparation and Characterization of Ammonium Polyphosphate/Diatomite Composite Fillers and Assessment of their Flame-retardant Effects on Paper |
title_short |
Preparation and Characterization of Ammonium Polyphosphate/Diatomite Composite Fillers and Assessment of their Flame-retardant Effects on Paper |
title_full |
Preparation and Characterization of Ammonium Polyphosphate/Diatomite Composite Fillers and Assessment of their Flame-retardant Effects on Paper |
title_fullStr |
Preparation and Characterization of Ammonium Polyphosphate/Diatomite Composite Fillers and Assessment of their Flame-retardant Effects on Paper |
title_full_unstemmed |
Preparation and Characterization of Ammonium Polyphosphate/Diatomite Composite Fillers and Assessment of their Flame-retardant Effects on Paper |
title_sort |
preparation and characterization of ammonium polyphosphate/diatomite composite fillers and assessment of their flame-retardant effects on paper |
publisher |
North Carolina State University |
series |
BioResources |
issn |
1930-2126 1930-2126 |
publishDate |
2014-04-01 |
description |
Ammonium polyphosphate (APP) was synthesized by heating a mixture of phosphoric acid and urea, and APP/diatomite composite flame-retardant fillers were prepared by two methods: mixing and in situ polymerization. Flame-retardant paper was made by adding the prepared composite fillers to paper. The APP and APP/diatomite composite fillers were characterized by XRD, 31PNMR, SEM, FTIR, and TG. The flame retardation of paper containing these composite fillers was determined. Results showed that the prepared APP had a minimum solubility when the molar ratio of phosphoric acid to urea was 1:1.8. Under these conditions, its degree of polymerization was 91.21. After mixing and in situ polymerization, a large amount of APP was adsorbed into the surface of the diatomite. These two APP/diatomite composite fillers had similar thermal stabilities, but the flame retardation of paper containing in situ polymerized composite filler was better than that of paper containing the composite filler obtained by mixing. |
topic |
Ammonium polyphosphate Diatomite In situ polymerization Composite flame-retardant filler Flame retardation |
url |
http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_09_2_Sha_Chen_Ammonium_Flame_Retardant |
work_keys_str_mv |
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