Flame retardancy and its mechanism of polymers flame retarded by DBDPE/Sb2O3

2008 ◽  
Vol 15 (1) ◽  
pp. 64-68 ◽  
Author(s):  
Jian-dong Zuo ◽  
Rong-xun Li ◽  
Shao-hua Feng ◽  
Guang-ye Liu ◽  
Jian-qing Zhao
Keyword(s):  
Flame Retardancy ◽  
Flame Retarded

Effect of Triaryl Phosphate, Zinc and Zinc Borate on Fire Properties of High Impact Polystyrene and High Impact Polystyrene-Polyphenylene Oxide Blend (Modified-Polyphenylene Oxide

1994 ◽  
Vol 12 (6) ◽  
pp. 529-550 ◽  
Author(s):  
Ramazan Benrashid ◽  
Gordon L. Nelson ◽  
Donald J. Ferm
Keyword(s):  
Flame Retardancy ◽  
High Impact ◽  
Zinc Borate ◽  
Polyphenylene Oxide ◽  
High Impact Polystyrene ◽  
Smoke Generation ◽  
Flame Retarded ◽  
Rate Of Heat Release ◽  
Fire Properties ◽  
Phase Activity

Samples of m-PPO (virgin and flame retarded) and high impact polystyrene blended with zinc and zinc borate (2ZnO·3B2O3·3.5H 2O), were pre pared. The effect of triaryl phosphate on the flame retardancy of PPO-HIPS in conjunction with zinc and zinc borate was studied. For polystyrene zinc borate shows some reduction in smoke generation. Zinc, however does not show any effect on smoke generation for high impact polystyrene. Triphenyl phosphate shows minimal flame retardancy in HIPS which is not enhanced by zinc. Addition of zinc gives an increase in oxygen index for FR m-PPO, whereas zinc borate decreases the OI values. Zinc borate may sequester triaryl phos phate and thus eliminate its vapor phase activity. Zinc borate shows a signifi cant reduction in smoke generation and rate of heat release for m-PPO.

The Flame Retardant Synergism between Cobalt Complexes and Ammonium Polyphosphate in Cottonwood

2012 ◽  
Vol 568 ◽  
pp. 287-290
Author(s):  
Li Ping Yuan ◽  
Guo Yun Wu ◽  
Ge Tian ◽  
Yun Chu Hu
Keyword(s):  
Mass Loss ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Molecular Sieve ◽  
Isonicotinic Acid ◽  
Cobalt Complexes ◽  
Ammonium Polyphosphate ◽  
Solvent Water ◽  
Flame Retarded ◽  
Coordinated Water

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. Compared with APP added individually, when the addition of Co5 was 1.7%, THR reduced 18.3% and the mass loss reduced 7.7%. The TGA showed that the processes of losing solvent water, coordinated water, tricarballylic acid and isonicotinic acid ligands can inhibit burning and lower the weightlessness rate. The flame retardancy of APP/Co5 was superior to that used APP individually, Co5 showed good synergistic flame-retarded effects.

Interaction of Flame-Retardant and Untreated Cotton Fabrics during Burning

1977 ◽  
Vol 47 (5) ◽  
pp. 351-360 ◽  
Author(s):  
Stanley R. Hobart ◽  
Charles H. Mack
Keyword(s):  
Flame Retardant ◽  
Cotton Fabric ◽  
Flame Retardancy ◽  
Oxygen Index ◽  
Cotton Fabrics ◽  
Transfer Effect ◽  
Geometrical Configuration ◽  
Untreated Cotton ◽  
Phosphorus Containing ◽  
Flame Retarded

Transfer of flame retardancy from fabric treated with THPOH-NH3 to untreated cotton fabric during burning was observed on fabric samples sewed together with glass thread. The transfer effect was evidenced by the development of substantial char and the presence of phosphorus and nitrogen in the char of the untreated fabric. Oxygen-index determinations on multilayered combinations of flame-retarded (FR) and untreated fabrics also supported this observation. The extent of FR transfer varied with the geometrical configuration of the layers and the FR add-on. Tests showed that smoke from combustion of THPOH-NH3-treated fabric, passed through untreated cotton fabric, was the means of transfer of phosphorus, nitrogen, and flame retardancy. The FR transfer effect was also demonstrated for several other phosphorus-containing flame-retardancy treatments.

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