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How to identify the quality of redispersible latex powder?

December 13, 2021by admin0

Method one, ash method. Take a certain amount of re-dispersible latex powder, weigh it, place it in a metal container, heat up to about 500 degrees, after burning at 500 degrees high temperature, cool to normal temperature, and weigh again. Light weight and good quality.

Method two, the dissolution method. Take a certain amount of re-dispersible latex powder and dissolve it in 5 times the mass of water, stir it thoroughly and let it stand for 5 minutes to observe. In principle, the less content that settles to the bottom layer, the better the quality of the redispersible powder. This method is simple and easy.

Method three, film-forming method. Take a certain amount of redispersible latex powder, dissolve it in 2 times the water, stir it evenly and let it sit for 2 minutes, stir again, pour the solution on a flat clean glass, and place the glass in a ventilated shade. After fully drying, remove. Observe the removed polymer film. High transparency and good quality. And then pull moderately, good elasticity and good quality. Then cut the film into strips, soak in water, and observe after 1 day, the quality of the less dissolved by water is good. This method is more objective.

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