Water-based paint and oil paint, how to distinguish-Iota

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Service > Water-based paint and oil paint, how to distinguish

Water-based paint and oil paint, how to distinguish

Because the water paint most used nonionic emulsifier, emulsifying agent itself is a surface active agent, with other surfactants shared lipophilic group and hydrophilic group, and oil paint to add only low HLB value of the dispersing agent and flatting agent, without adding any emulsifier.
In the paint after drying the emulsifier still exists in the coating, so can distinguish water-based paint and oil paint were observed by means of contact angle.
The possibility of large oily larger contact angle, contact angle is small the possibility of greater water. The instrument to determine the contact angle is the contact angle measuring instrument, if there is no such instruments at hand can be in two sample drop of distilled water, observe and judge their inscribed the antennal size with the naked eye. Lotus effect this method and observe the substance is the same.

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