Water-based paint is a paint with water as the main solvent. Compared with traditional solvent-based paints, it has the advantages of environmental protection, low VOC, easy cleaning, and easy construction, and has gradually attracted more and more consumers' attention. Its application fields include home decoration, architectural coatings, industrial coatings and many other fields.
| Detection performance | Equipment used |
|---|---|
| density | Density meter |
| solid content | oven, balance |
| pH value | pH meter |
| viscosity | Viscometer |
| drying time | oven, timer |
| water resistance | Water cycle test device |
| Anti-yellowing | Sunshine aging Test Chamber |
| weather resistance | climate chamber |
The following are the corresponding detection steps:
Density: Using a densitometer, pour the paint into the densitometer to measure according to standard methods, record the readings and calculate the density of the paint.
Solid content: Heat a certain amount of paint to a dry state, weigh and calculate the solid content.
pH value: Using a pH meter, dissolve the coating in water and stir evenly, and record the pH value.
Viscosity: Using a viscometer, measure the viscosity of the paint at the specified temperature.
Drying time: A certain amount of paint is applied to a glass sheet or other flat surface, and the drying time is measured under specified temperature and humidity conditions.
Water resistance: apply the paint on the test piece, and check the performance change of the coating film after a certain period of water cycle test.
Yellowing resistance: Expose the sample to sunlight to check whether the color of the coating film changes.
Weather resistance: Place the sample in an artificial climate chamber to simulate natural environmental conditions and check the performance changes of the coating film.