What properties should be tested for flexible emulsions? What are the detection methods?
Flexible emulsion is a kind of emulsion with flexible polymer as the main component. It is different from the traditional emulsion, it has excellent flexibility, scratch resistance, water resistance, durability, elasticity and other characteristics. Common flexible polymers include acrylate copolymers, neoprene, silicone rubber, polyurethane, etc. Flexible emulsion is widely used in plastics, building materials, textile, electronics, automotive, medical and other fields, can be used to prepare a variety of high-performance materials, coatings, adhesives, sealing materials, elastomers, etc.
Detection performance
The following are the common performance parameters to be tested for flexible emulsions and their brief descriptions:
| Performance parameters | A brief description |
|---|---|
| Solid content | Nonvolatile components in the paint as a percentage of the total weight |
| viscosity | The viscosity of the coating has an important impact on the coating effect and construction performance |
| Particle size distribution | Size distribution of particles in a flexible emulsion |
| pH value | The pH of the flexible emulsion has an important influence on the stability and performance of the coating |
| Force of adhesion | Adhesion between coating and substrate surface |
| durability | The weather resistance, wear resistance and chemical resistance of the coating have an important impact on the service life and performance of the coating |
| elasticity | The elastic and deformable ability of coatings is of great significance for flexible materials and elastomers |
| Tensile strength | The maximum capacity of the coating under tensile force |
| Scratch resistance | The ability of the coated surface to resist scratching and abrasion |
| Water resistance | Waterproof, moisture-proof and penetration-resistant properties of the coating |
What properties should be tested for flexible emulsions? What are the detection methods?
Detection method
The following is a brief description of the test methods for common performance parameters of flexible emulsions:
Solid content: The coating sample was dried to a constant weight at about 105 ° C, and the ratio of the mass of non-volatile substances to the total sample mass was calculated.
Viscosity: Use equipment such as rotational viscometer or dioptometer to measure the viscosity of the paint.
Particle size distribution: Devices such as particle size analyzers are used to measure the size distribution of particles in flexible emulsions.
pH value: Use PH meter and other equipment to measure the pH of the paint to evaluate the stability and performance of the paint.
Adhesion: Use tensile testing machine, shear testing machine and other equipment to measure the adhesion of the coating and the substrate surface.
Durability: evaluate the weather resistance, wear resistance and chemical resistance of the coating by simulating the exposure and wear tests in the actual use environment.
Elasticity: Use material testing machine and other equipment to measure the elasticity and deformation ability of the coating.
What properties should be tested for flexible emulsions? What are the detection methods?
Tensile strength: Use equipment such as tensile testing machine to measure the maximum capacity of the coating under tensile force.
Scratch resistance: Use equipment such as a scratch resistance meter to simulate the scratch and wear in actual use, and evaluate the scratch resistance of the coating surface.
Water resistance: Use water immersion tester and other equipment to evaluate the waterproof, moisture-proof and permeability resistance of the coating.
We remind you: different performance parameters may require different test methods and equipment, and there may be some industry standards and specifications, for flexible emulsion performance testing, but also should be selected according to the actual needs of the corresponding test methods and standards. At the same time, the test conditions and standardized operations need to be strictly controlled during the experiment to ensure the accuracy and reliability of the test.