防滅火三相泡沫發(fā)泡穩(wěn)定及流動性能研究
發(fā)布時間:2018-06-05 07:27
本文選題:油品火災(zāi) + 三相泡沫; 參考:《工業(yè)安全與環(huán)!2017年11期
【摘要】:為研究油品火災(zāi)三相泡沫的發(fā)泡穩(wěn)定與流動性能的關(guān)系,利用Waring-Blender方法對6種固相粉體制備三相泡沫,并分別以發(fā)泡高度、25%析液時間及表觀粘度為參數(shù),對其發(fā)泡穩(wěn)定及流變性能進行表征,并通過Herschel-Bulkley方程對三相泡沫流變曲線進行擬合。實驗結(jié)果表明,親水及"兩親"粉體制備的三相泡沫具有較高的發(fā)泡高度及穩(wěn)定性,疏水粉體制備的三相泡沫的發(fā)泡及穩(wěn)定性能不足;流變測試結(jié)果顯示三相泡沫屬于屈服-假塑性流體且流變本構(gòu)方程與Herschel-Bulkley方程擬合較好,其中親水及"兩親"粉體制備的三相泡沫屈服-假塑性流體性質(zhì)較疏水粉體制備的明顯,表觀粘度較大,流動性不足。
[Abstract]:In order to study the relationship between foaming stability and flow performance of three phase foam in oil fire, three phase foam was prepared by Waring-Blender method, and the foaming stability and rheological properties were characterized by the foaming height, 25% solution time and apparent viscosity, and the three-phase foam flow was carried out through the Herschel-Bulkley equation. The experimental results show that the three-phase foam prepared by the hydrophilic and "two parent" powder system has high foaming height and stability, the foaming and stability of the three-phase foam prepared by the hydrophobic powder system is insufficient, and the rheological test results show that the three phase foam belongs to the yield pseudoplastic fluid and the rheological constitutive equation and the Herschel-Bulkley equation. The fitting is better. The properties of the three phase foam yield pseudoplastic fluid prepared by the hydrophilic and "two parent" powder system are more obvious than those of the hydrophobic powder system, and the apparent viscosity is larger and the fluidity is insufficient.
【作者單位】: 后勤工程學(xué)院軍事供油工程系;重慶大學(xué)城市建設(shè)與環(huán)境工程學(xué)院;
【基金】:國家自然科學(xué)基金(51574254) 國家重點專項(2017YFC0804705) 重慶市科技計劃項目(CSTC 2014yykf B90001)
【分類號】:TE88;TQ569
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