Flexible emulsion is an emulsion with flexible polymer as the main component. Unlike conventional emulsions, it has excellent flexibility, scratch resistance, water resistance, durability, elasticity, etc. Common flexible polymers include acrylate copolymers, neoprene, silicone rubber, polyurethane, and others. Flexible emulsions are widely used in plastics, building materials, textiles, electronics, automobiles, medical care and other fields, and can be used to prepare various high-performance materials, coatings, adhesives, sealing materials, elastomers, etc.
Detection performance
The following are common performance parameters that need to be tested for flexible emulsions and their brief descriptions:
| performance parameter | A brief description |
|---|---|
| Solid content | Non-volatile components in coatings as a percentage of total weight |
| viscosity | The viscosity of the coating has an important influence on the coating effect and construction performance |
| Particle size distribution | Particle Size Distribution in Flexible Emulsion |
| pH value | The pH of the flexible emulsion has an important influence on the stability and performance of the coating |
| Adhesion | Adhesion of paint to substrate surface |
| Durability | The weather resistance, wear resistance, chemical resistance, etc. of the coating have an important impact on the service life and performance of the coating |
| elasticity | Elasticity and deformability of coatings, important for flexible materials and elastomers |
| tensile strength | The maximum bearing capacity of the coating under tensile force |
| Scratch resistance | The ability of the coated surface to resist scratching and abrasion |
| waterproof | Waterproof, moisture-proof and penetration-resistant properties of the coating |
Detection method
The following is a brief description of the test methods for common performance parameters of flexible emulsions:
Solid content: Dry the paint sample at about 105°C to constant weight, and calculate the ratio of the mass of non-volatile substances to the mass of the total sample.
Viscosity: Use a device such as a Rotational Viscometer or a refractometer to measure how viscous the paint is.
Particle size distribution: Use equipment such as particle size analyzers to measure the size distribution of particles in flexible emulsions.
pH value: Use equipment such as a pH meter to measure the pH of the coating to evaluate the stability and performance of the coating.
Adhesion: Use Tensile Testing Machines, shear testing machines and other equipment to measure the adhesion of the coating to the surface of the substrate.
Durability: By simulating exposure and abrasion tests in actual use environments, etc., evaluate the weather resistance, abrasion resistance, chemical resistance, etc. of the coating.
Elasticity: use equipment such as material testing machines to measure the elasticity and deformation ability of the coating, etc.
Tensile strength: use equipment such as a tensile Tester to measure the maximum bearing capacity of the coating under tensile force.
Scratch resistance: Use a scratch resistance Tester and other equipment to simulate scratches and wear in actual use to evaluate the scratch resistance of the coating surface.
Water resistance: Use equipment such as a water immersion Tester to evaluate the water resistance, moisture resistance and penetration resistance of the coating.
Beichao reminds you: Different performance parameters may require different testing methods and equipment, and there may be some industry standards and specifications. For the performance testing of flexible emulsions, corresponding testing methods and standards should be selected according to actual needs. At the same time, strict control of test conditions and standardized operations are required during the experiment to ensure the accuracy and reliability of the test.
