Coating technology: the method of nano composite modified epoxy resin

It is suggested that epoxy / inorganic nanocomposites have excellent mechanical, heat resistance, corrosion resistance and dimensional stability, in addition to many other excellent properties, which will show a broader application prospect in the fields of electronics, optics, machinery, biology, medicine, etc Experts said that the development of epoxy based inorganic nanocomposites reflects the effective modification of traditional general products by advanced nano materials technology, which has opened a new and broad development path for the functionalization and high performance of epoxy resin What are the preparation methods of inorganic nano particles filled modified epoxy resin? China epoxy 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 Home of coatings: epoxy / inorganic nanocomposites have excellent mechanical, heat resistance, corrosion resistance and dimensional stability, in addition to many other excellent properties, which will show a broader application prospect in the fields of electronics, optics, machinery, biology, medicine, etc Experts said that the development of epoxy based inorganic nanocomposites reflects the effective modification of traditional general products by advanced nano materials technology, which has opened a new and broad development path for the functionalization and high performance of epoxy resin What are the preparation methods of inorganic nano particles filled modified epoxy resin? Experts from China epoxy Industry Association specially introduced this The preparation of epoxy resin filled with inorganic nano particles is mainly through blending, which can fully mix nano particles and epoxy resin to form composite materials through different physical or chemical methods Blending can be divided into physical and chemical methods Physical method is to disperse nanoparticles by ball milling, grinding, colloidal grinding and ultrasonic method, among which ultrasonic method has better effect According to experts, its principle is that when the epoxy resin solution is treated by ultrasonic, the cavities or bubbles in the mixed solution vibrate under the action of sound field When the sound pressure reaches a certain value, the holes or bubbles grow rapidly and then suddenly close, resulting in extremely high pressure in the local area of the liquid, resulting in violent movement of the liquid molecules, which can make the nano aggregate disperse into a single particle or smaller aggregate, and make the epoxy resin fully cover the surface of each nano particle As we all know, nano particles tend to agglomerate in the process of mixing due to nano effect, while the viscosity of epoxy resin is very large In order to make nano particles disperse well, most of them are modified by coupling agent, that is, to improve the surface wettability of nano particles by physical adsorption or chemical adsorption, and to enhance the boundary of nano particles in epoxy resin The surface compatibilities make the nanoparticles disperse uniformly in the epoxy resin and obtain good nano effect, which is called chemical method Chemical method can be divided into direct addition method, pre-treatment method and post-treatment method The direct addition method is to directly add nano particles and coupling agent into the epoxy resin; the pre-treatment method is to dilute the coupling agent with diluent and then add nano particles, and then add them to the epoxy resin after vibration filtration and drying; the post-treatment method is to mix coupling agent and epoxy resin evenly before adding nano particles The pre-treatment method makes the coupling agent cover the surface of nano particles, forming a certain thickness of barrier layer, reducing the attraction and cohesion between nano particles, at the same time, the flexible section of coupling agent and epoxy resin form a good compatibility, and the good dispersion stability is obtained after mixing and dispersing the two; the direct addition method and the post-treatment method are based on a part of the coupling agent Groups react with various functional groups on the surface of nanoparticles to form chemical bonds Another group reacts with epoxy group to form certain chemical reactions, so that two materials with different properties can be firmly combined In practice, physical and chemical methods are usually combined to prepare nanocomposites Experts said that due to nano size effect, huge specific surface area and strong interface effect, nano inorganic particles can make the rigidity, size stability, thermal stability and toughness of epoxy resin after compounding with epoxy resin 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,