Detection performance of matting agent and detection method thereof
Matting agent is a coating additive that reduces the gloss of the coating and gives it a matting effect. It is usually made of polymer materials, can be compatible with various resin systems, and can achieve good dispersion and stability in coatings. The amount of matting agent added to the coating is usually 1-5% of the total volume, which can be adjusted as needed. In practical applications, matting agents are widely used in various furniture, wood products, building materials, auto parts and other fields to achieve different appearance effects and texture requirements.
Detection performance
The following are the properties of the matting agent that may need to be tested, and the corresponding detection method:
| property | Detection method |
|---|---|
| Particle size distribution | Laser particle size analyzer, electron microscope |
| Specific surface area | Specific surface area analyzer |
| Chemical composition | Infrared spectrum, mass spectrometry, nuclear magnetic resonance |
| stability | Centrifugal test, evaporation residue test |
| dispersivity | Observe the state of suspension and test viscosity |
| durability | Exposure test, humid heat cycle test |
| transparency | Concentration determination, transmission spectrum |
| Film property | Test methods for surface tension, adhesion, hardness, flexibility, etc |
Detection method
Particle size distribution: The size of the matting agent particle will affect its dispersion performance in the coating and the effect of light scattering, so it is necessary to use a laser particle size meter or electron microscope and other instruments to test the particle size of the matting agent.
Specific surface area: The specific surface area of the matting agent determines its dispersion performance and extinction effect in the coating, and can be tested using a specific surface area analyzer.
Chemical composition: The chemical composition of the matting agent directly affects its performance, and it can be detected by infrared spectroscopy, mass spectrometry and nuclear magnetic resonance.
Detection performance of matting agent and detection method thereof
Stability: The stability of the matting agent will affect its dispersion stability and service life in the coating, which can be tested by centrifugal test and evaporation residue test.
Dispersity: The dispersity of the matting agent affects the transparency and appearance of the coating, which can be tested by observing the state of the suspension and viscosity testing.
Durability: The matting agent needs to have a certain durability during use, which can be tested by exposure testing and humid heat cycle testing.
Transparency: The transparency of the matting agent is a key factor affecting the appearance of the coating and can be tested by methods such as concentration determination and transmission spectroscopy.
Coating properties: The matting agent will affect the surface tension, adhesion, hardness, flexibility and other aspects of the coating film, which can be evaluated by the corresponding test method.
South tide reminds you: the specific test methods and instruments may vary due to different types of matting agents and application scenarios, and should be selected according to the actual situation