青岛科技大学  English 
吴鸿志
赞  

教师拼音名称:wuhongzhi

出生日期:1975-07-01

学历:博士研究生

学位:工学博士

学科:

英语语言文学

移动电话:

邮箱:

手机版

访问量:

最后更新时间:..

Hydrogen generation from alkaline NaBH4 solution using electroless-deposited Co-Ni-W-P/gamma-Al2O3 as catalysts

关键字:FLAME RETARDANCY; ALUMINUM PHOSPHINATE; HINDERED AMINE; COMBINATION; DEGRADATION; MECHANISMS; CYANURATE

摘要:The fire-retardant synergy of tris(1-methoxy-2,2,6,6-tetramethyl-4-piperidinyl)-phosphite (NORPM) and melamine hydrobromide (MHB)/aluminum diethylphosphinate (ADEP) in polypropylene (PP) was characterized by UL-94 tests, limiting oxygen index (LOI) determination and cone calorimetry tests (CCT). NORPM exhibits an exceptional synergy in PP. The LOI and fire-retardant effectivity (EFF) of S-3 (the loadings of MHB and ADEP 1.00 and 1.50 wt%, respectively, no NORPM) were 19.0% and 0.48%, respectively, however, the LOI and EFF of S-15 (the loadings of NORPM, MHB and ADEP 0.2, 1.00 and 1.50 wt%, respectively) significantly increased to 25.5% and 2.85%, respectively, synergistic effectivity (SE) of NORPM is 2.03, and the fire-retardant rating was improved from none to UL 94 V-2 and the total heat release (THR) and peak heat release rate (PHRR) dropped obviously by adding the 0.2 wt% NORPM. The analysis by thermogravimetry-mass spectrum analysis (TG-MS) of the PP samples and the residues in the CCT revealed that NORPM, MHB and ADEP induced the synergy primarily by the following modes: CH3O center dot, aminyl radicals, CH3 center dot and nitro radicals formed through the cracking of NORPM, along with the free radicals such as PO center dot, PO2 center dot and HPO center dot pyrolyzed from ADEP and HBr from MHB, which quenched the active radicals, such as HO center dot, H center dot, ROO center dot, R center dot and broke down the radical source. The chain oxidation reaction of combustion was accordingly interrupted, which brought about the more exceptional fire-retardant effect than that of MHB/ADEP.

卷号:61

期号:2

是否译文:

崂山校区 - 山东省青岛市松岭路99号   
四方校区 - 山东省青岛市郑州路53号   
中德国际合作区(中德校区) - 山东省青岛市西海岸新区团结路3698号
高密校区 - 山东省高密市杏坛西街1号   
济南校区 - 山东省济南市文化东路80号©2015 青岛科技大学    
管理员邮箱:master@qust.edu.cn