Coating technology: nitrocellulose coating construction and precautions

Key tips: 1 Construction method of nitrocellulose coating The main construction methods of nitrocellulose coating are brush coating, spray coating and spray coating The solvent active diluent of nitrolacquer has a great influence on the workability and dryness of the paint The solvent must have enough solubility and appropriate volatility Therefore, it is necessary to dilute the paint with special / matching diluent and then use it again, with the best spraying effect 1 Painting requires the use of a slow process solvent to allow the brush marks to flow flat Compared with nitrocellulose based paints, many of them have better appearance and are easy to use Therefore, there is no need of niter in the wood paint now applied Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Coating home news: 1 Nitro coating construction methods nitro coating construction methods are: brush, spray, spray The solvent active diluent of nitrolacquer has a great influence on the workability and dryness of the paint The solvent must have enough solubility and appropriate volatility Therefore, it is necessary to dilute the paint with special / matching diluent and then use it again, with the best spraying effect 1 Painting requires the use of a slow process solvent to allow the brush marks to flow flat Compared with nitrocellulose based paints, many of them have better appearance and are easy to use Therefore, most of the wood paint is not nitrocellulose paint, but one component polyurethane 2 Spraying is the main construction method of nitrocellulose coating It is usually applied to a certain degree by brush (the film thickness is basically met), and then ground flat, and finally spray finished A Use of spray gun: the spray gun shall be vertical to the surface of the workpiece to be sprayed, 30-40cm from the surface The spray gun shall move evenly at a suitable rate and parallel to the workpiece surface to avoid sagging and uneven coating The spraying distance and vertical angle between the spray gun and the object surface are controlled by the body The movement of the spray gun also needs to use the body to assist the movement of the arm, and the wrist cannot be moved B By using "solvent biting" and "re leveling" technology, it can meet the requirements of advanced decoration and eliminate the orange peel and particles on the surface of the finish coat, making the paint film bright as mirror and mirror clear The process is as follows: spray the last finishing coat, dry it, polish it with 400 ා or 500 ා water sandpaper, wipe it clean, spray a solvent with strong solubility and slow volatilization rate, or mix it into a very thin same finishing coat and dry it In this way, not only the smooth paint surface can be obtained, but also the polishing workload can be significantly reduced C Due to the low solid content of nitrocellulose coating, it needs to be sprayed repeatedly to reach the thickness, and the two spraying time is 10 minutes 3 The spray coating is only applicable to the plate, and can be wet touch wet continuous spray coating Place 24-48h wet grinding coating and polishing for four times of spray coating 2、 Nitrocellulose coating construction process substrate treatment sandpaper grinding sealing primer grinding deburring scraping putty grinding nitrocellulose primer sandpaper grinding nitrocellulose finish III precautions 1 The temperature of the coating environment should be 15-25 ℃, and the relative humidity of the environment should not be more than 75% When the environment humidity is high and the temperature is high, it is not suitable for construction 2 Non matching diluent may cause precipitation, whiteness and poor adhesion of paint, so it should be used in small amount If the construction viscosity is too high, nitro diluent can be added 3 When spraying, the effect of oil-water separator shall be checked frequently, and the heavy moisture of compressed air shall be removed in time 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,