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    Home > Coatings News > Paints and Coatings Market > General knowledge of coatings: adjustment of properties in the formulation of waterborne coatings -- wear resistance and scratch resistance

    General knowledge of coatings: adjustment of properties in the formulation of waterborne coatings -- wear resistance and scratch resistance

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    It is suggested that the appearance of paint film can be roughly divided into hard, soft, tough and brittle types The polymer material can form different appearance forms such as hard and tough, soft and tough, hard and brittle, soft and brittle The latter is not uncommon in polymer materials, and even flexible materials will have brittle fracture at extremely high speed The wear resistance and scratch resistance of waterborne wood paint is the result of the material peeling off from the solid surface under the action of force when two solid surfaces contact Scratch resistance reflects the surface properties of coatings under the action of large stress and short time Scratch resistance is not only related to the hardness of the material, but also Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Paint Home News: the appearance of paint film can be roughly divided into hard, soft, tough and brittle types The performance of polymer materials can also form different image forms such as hard and tough, soft and tough, hard and brittle, soft and brittle The latter is not uncommon in polymer materials, and even flexible materials will have brittle fracture at extremely high speed The wear resistance and scratch resistance of waterborne wood paint is the result of the material peeling off from the solid surface under the action of force when two solid surfaces contact Scratch resistance reflects the surface properties of coatings under the action of large stress and short time Scratch resistance is not only related to the hardness of the material, but also to the toughness of the material The scratch resistance of the polymer is related to abrasion and changes in parallel with the modulus of the polymer From the microscopic point of view, the surface of the material can not be absolutely flat The contact point is some convex tips When a material has high hardness or there are rigid particles between the two contact surfaces, the surface will sink after being stressed, and then the surface will move relative to each other to form a furrow scratch, which results in scratch When the surfaces of the two materials contact, the relatively soft surfaces are more likely to be scratched Due to the low Mohs hardness of the polymer, the paint film made of polymer is easy to be scratched The crosslinked elastic polymer is easy to deform and has good resilience, so it has high scratch resistance Compared with the small molecules, the other feature of the polymer is that when the molecules or chain segments are moved by external forces, they need a long relaxation time The scratches formed under the action of instantaneous and rapid external forces may become less obvious or even disappear because of the subsequent relaxation of the macromolecular chains This is the so-called scratch resistant self-healing coating, which is available in some flexible polyurethane coatings Functions Of course, if the "furrow" formed by the scratch is too deep, it is difficult to completely self-healing Wear resistance refers to the degree of material peeling off from the matrix under the same stress conditions (temperature, humidity, contact medium, external force size and stress time) The same abrasion resistance as scratch resistance is related to the hardness and toughness of the material, but the abrasion resistance reflects the surface performance of the material under the action of small stress and long time In addition to the positive pressure, there is also a shear force The spalling of the material is separated from the parent material in the form of particles and small pieces On the contrary, for the same type of polymer film, it has been found that the harder the film, the worse the wear resistance Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,
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