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›› 2013, Vol. 33 ›› Issue (4): 22-26.doi: 10.3969/j.issn.0253-2417.2013.04.004

• 1研究报告 • Previous Articles     Next Articles

Effects of Cobalt Complexes on the Combustion Process of Cottonwood with Ammonium Polyphosphate Flame Retardant

YUAN Li-ping1, WU Guo-yun2, HU Yun-chu1   

  1. 1. College of Materials Science and Engineering, Central South University of Forestry & Technology, Changsha 410004, China;2. Hunan Food and Drug Vocational College, Changsha 410014, China
  • Received:2012-06-14 Revised:1900-01-01 Online:2013-08-30 Published:2013-08-30

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Abstract: The synergistic flame-retarded effects of a similar molecular sieve[Co5(OH)2(tca)2(ina)2(H2O)2]·4H2O(Co5) and ammonium polyphosphate(APP) on cottonwood was studied by cone calorimeter. The results showed that compared with APP added individually, the combination of Co5 and APP was led to the reduction of total heat release(THR) to 18.3%, the mass loss to 7.7%, y(CO2) to 22.8 g/kg and y(CO) to 12.3 g/kg, respectively. The TGA and XRD analysis also showed that the generation of tricarballylic acid and isonicotinic acid ligands under high temperature. It can promote the decomposition of the APP and help to inhibit burning and lower the weightlessness rate. Thus, the flame retardancy of s-APP/Co5 was superior to s-APP. Co5 showed good effects on the APP flame retarded cottonwood.

Key words: ammonium polyphosphate, [Co5(OH)2(tca)2(ina)2(H2O)2]·4H2O, flame retardant

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