Posted on 2015-11-02 With the Dacromet market open, more and more manufacturers to enter the Dacro liquid in the industry, in the competition in the industry profit is small, Dacromet coating liquid production enterprises only continue to improve their technical level reduce the production cost to prevent to be out of the market. If the quality identification of Dacromet coating solution? Today we are talking about the following two aspects.
1, water washing methodDacromet coating is an aqueous coating fluid, used in Dacromet solution of zinc flake, will have a small amount of metal powder precipitated at the bottom of the container. Take the precipitation of metal powder into a 500ml beaker, 400 ml of deionized water is added and stir with glass, standing for 30 minutes, to observe if the bottom only a small amount of metal powder, the most is still suspended in the water, quality of Dacromet; if there is precipitation of spherical powder or cake powder, to remove the water used in military twist spherical powder, have smooth feeling, inferior Dacro liquid. The coating liquid precipitation in Dacromet coating liquid little zinc powder, the performance is better.
2, observation methodAfter washing the precipitate in the bottom of the cup of the zinc coating liquid to observe the general merits of resolution by means of microscope. Domestic some flake zinc powder, performance than foreign products, in the water washing method will soon appear precipitation, the zinc powder for Dacromet also does not meet the requirements.
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Post time: Jan-13-2022