期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Modification of ADP extinguishing powder by siliconization in spray drying 被引量:3
1
作者 Xiaojing Zhang ZhigangShen +4 位作者 Chujiang Cai Xiaozheng Yu Jun Du Yushan Xing Shulin Ma 《Particuology》 SCIE EI CAS CSCD 2012年第4期480-486,共7页
Superfine spherical fire-extinguishing powder, ammonium dihydrogen phosphate (ADP, NH4 H2 PO4), was prepared by spray drying and modified in situ with methyl hydrogen silicone oil (MHSO) emulsion and the fluorinat... Superfine spherical fire-extinguishing powder, ammonium dihydrogen phosphate (ADP, NH4 H2 PO4), was prepared by spray drying and modified in situ with methyl hydrogen silicone oil (MHSO) emulsion and the fluorinated surfactant FK-510. The influences of the MHSO mass ratio on the hydrophobicity, sur- face composition, surface morphology, dispersion and particle-size distribution of the NH4H2PO4 were studied, and the influence of the drying air temperature on the decomposition of the NH4H2PO4 was also researched. The results indicate that the MHSO and FK-510 congregate on the particle surfaces and then form a hydrophobic shell. This shell improves the particle hydrophobicity and leads to a fine dispersion of the particles. During the process of preparing the precursor solution, 3 wt% (based on the weight of NH4H2 PO4 ) was chosen as the optimum value of the MHSO mass ratio. During the spray drying, a low abso- lute humidity of the air should be maintained, and it is very important to keep the exit-air temperature below 100℃ to avoid decomposition. 展开更多
关键词 Methyl hydrogen silicone oil (MHSO)Ammonium dihydrogen phosphate (ADP)Fire-extinguishing powderSpray dryingDrying air temperatureAgglomeration
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部