香蕉水--杨远锋的博客

香蕉水

[ 2011-7-20 17:40:00 | By: 杨远锋 ]

香蕉水又名天那水，主要成分是二甲苯，挥发性极强易燃易爆有毒，是危险品。将乙酸乙酯、乙酸丁酯、苯、甲苯、丙酮、乙醇、丁醇按一定重量百分组成配制成混合溶剂，称之为香蕉水。纯香蕉水是无色透明易挥发的液体，有较浓的香蕉气味，微溶于水，能溶于各种有机溶剂，易燃，主要用作喷漆的溶剂和稀释剂。在许多化工产品，涂料，黏合剂的生产过程中也要用到香蕉水做溶剂．

一、配制方法 (1850年，人们用乙酸戊酯制成了香蕉水。)
按重量比，取乙酸正丁酯15％，乙酸乙酯15％，正丁醇10～15％，乙醇10％，丙酮5～10％，苯20％，二甲苯20％，然后将其充分混匀即可制得香蕉水。

    二、注意事项
    1．香蕉水中各种原料的配比可作适当调整。此外，所用原料也可替换，如乙酸乙酯少就可以用杂酯代替；有时可根据香蕉水的用途不同而选用不同原料。
    2．酮类的加入可增加漆膜的光亮度，苯类一般不宜超过40％。
    3．在配制香蕉水时，各种原料的含水量要尽量降低到最少程度。
    苯不要用，沸点太低，挥发速度太快，容易白化，尤其是湿度较大时，最重要的是危害性和危险性大。

香蕉水，一般称为稀释剂，上世纪20年代进口的硝基漆的稀释剂因有香蕉味的乙酸正丁酯和乙酸乙酯，俗称香蕉水；现在各种漆类的稀释剂的配方不一样，一般的硝基漆的稀释剂的配方参考为乙酸正丁酯20％，乙酸乙酯20％，正丁醇10～15％，乙醇5％，丙酮5～10％，甲苯40％，高级品中另加乙二醇乙醚醋酸酯5-10%，甲基异丁酮10%。苯不要用，沸点太低，挥发速度太快，容易白化，尤其是湿度较大时，最重要的是危害性和危险性大。

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原创

[ 2016-9-6 17:10:12 | By: 原创(游客) ]

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原创

[ 2016-9-28 16:45:49 | By: 原创(游客) ]

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原创

[ 2016-9-30 11:22:15 | By: 原创(游客) ]

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Re:在漫画中识别身边的违章

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Re:在漫画中识别身边的违章

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