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正式会员
等级: 三袋长老
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There many offer in the market, most of them using "glycol" to replace it. Just need to use around 20% to the substitute then which can get the similar result of the effect of alcohol in fountain solution. One of the reason why this is so popular in western country, cost of the treatment of IPA is very high. In order to reduce the production, they need something to replace it. In fact some of the IPA substitute cannot replace the alcohol in total. Printer may still need to use small amount of alcohol but the content may be just 2 to 4% instead of 10 to 12%. Want to use this kind of substitute, is not just replace it and get the good result instantly. This need time to calibrate the content, pH value, etc. The pH value, conductivity, working temp. is not as the same as the alcohol. Some of this substitute would working well at around pH3.5, much lower than alcohol at ph4.5 to pH5.5. |
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Bloodsaler (2010-04-28)
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荣誉版主
等级: 七袋长老
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引用:
免酒精润版液使用了其他化学品来替代异丙醇IPA。通常市面上的产品大多使用乙二醇来替代。只需要加入20%的替代品便能达到酒精润版液的效果。 在西方国家这种润版液应用广泛。因为IPA对环境伤害较大,为了减少损耗就必须找替代品。 事实上许多免酒精润版液并不能完全替代酒精,操作人员人需要添加2%-4%的IPA比例。 使用此类润版液并不会取得立竿见影的效果,需要时间去校正其PH值等参数。 其PH值、电导率、工作温度与传统酒精润版液并不相同,一些润版液的工作PH值为3.5左右,比通常的润版液参数4.5-5.5低得多。 ![]() |
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sudong123 (2010-04-29)
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