Water-resistant paint hardness, scratch resistance and wear resistance and other performance analysis

Water-based lacquer film from the physical appearance of the performance can probably be expressed as soft, hard and tough, brittle. Correspondingly, there will be soft tough, soft brittle, hard tough, hard brittle and other different properties of the paint film.
soft and brittle is a common characteristic of paint film, and the most ideal paint film is hard toughness
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. In most cases, however, hardness and toughness do not co-exist easily.
there are different methods and expressions in the performance test of the hardness of the paint film. In fact, different methods and expressions, the characteristics of the performance of the paint film is a certain difference.
For different hardness test methods can be viewed: "
water-based paint hardness measurement
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about the performance of the expression, there is hardness, scratch resistance, wear resistance, etc. , there are certain differences.
hardness and scratch resistance
hardness reflects the coating's ability to resist the pressure, scraping and penetration of foreign materials. Its physical significance can be understood as the resistance of the surface of the lacquer film to another object with a higher hardness.
is the ability of the coating surface to resist foreign materials being scratched when its surface moves relatively under the influence of force.
from the above concepts, there is a certain difference between scratch resistance and hardness. The hardness of the paint film mainly emphasizes the ability of the paint film to resist deformation, while the anti-scratch performance of the paint film pays more attention to the relative movement of foreign materials without scratching.
scratch resistance is not only related to hardness, but also to the toughness of the coating film and the smoothness of the surface of the paint film. When the paint film toughness is good, the paint film can be deformed to avoid being scratched, after the force, and then return to the original, when the paint film is slippery, it can reduce the relative movement of the scraping force.
hardness and wear resistance
coating wear resistance refers to the resistance of the coating to frictional machinery. It is expressed in the degree to which the material resists peeling off from the mother under the condition of mechanical frictional force.
is actually a reflection of the combined effects of hardness, toughness, adhesion and cohesion of the coating. As with scratch resistance, wear resistance and toughness are closely related, and the effects of toughness are even higher than those of other properties. Because the coating with better toughness has a viscous elastic effect, energy can be buffered, absorbed and released, thus reducing wear consumption.
the same type of polymer, not the harder the coating film wear resistance is better, on the contrary, the harder the coating film wear resistance is worse.
the moshi hardness of water-resistant paint is not high, which also leads to the hard through the high and friction is less, but because the paint film is too soft and adhere to enhance the situation more.
fact, this has the same principle as polishing: when the paint film is softer, the polishing film is not easy to powder, while the hardness of the paint film is easier to polish.
solvent wipe resistance
solvent wipe resistance is mainly for coatings that react chemically during curing and is used for testing for high and low solvent resistance.
can be seen from the above concepts, the performance and the above several distinctions are more obvious. Paying more attention to the chemical properties of the coating, wiping is only a means of promoting solvent penetration.original:good industry Tiancheng