How to test the stability of the properties of ultrafine barium sulfate in coatings?
How to test the stability of the properties of ultrafine barium sulfate in coatings?
In order to test the properties of ultrafine barium sulfate in coatings, a series of experiments and performance tests were carried out on the application of ultrafine barium sulfate in benzene-acrylic matte emulsion paint.
A, paint whiteness, covering power and other aspects of comparison
Artificial aging test of paint film
Paint of different formulations is sprayed on cement board, and artificial aging test is carried out on sunshine aging machine. Results: The discoloration time of the original production formula was 580 hours, but the discoloration time of the present production formula is 1200 hours, indicating that the weatherability of the paint film can be significantly improved by adding ultrafine barium sulfate.
Three, coating room temperature storage results
Due to the small particle size of ultrafine barium sulfate, its agglomeration morphology also determines that its density is not lower than that of ordinary barium sulfate, so it overcomes the disadvantages of ordinary barium sulfate, such as easy precipitation and easy stratification. The emulsioni paint test samples placed for a year without obvious delamination and settlement phenomenon, good stability.
Additional, its paint film is in be able to bear water, be able to bear wet swabbing sex, the respect such as fight pollution sex all has outstanding advantage.
