Analysis: Five Factors to you paint defects caused by the renovation process.

With the paint now <p> variety of development and change with the coating method, coating defects are numerous and difficult to find clear reasons and because, so far there are still many do not know what caused the defect, is somewhat more subtle defects, although it will .occurred, will automatically disappear after a period of time. .The following expenses may result in coating defects influencing factors, but the defects are often caused by the interaction of multiple factors. .</ P> <P> <P> <p align="center"> </ p> <p> (1) paint itself factors </ p> <p> As mentioned above, there is a film-forming coating materials, solvents, .additives and coloring materials and other ingredients and the composition of various raw materials, its performance to the composition by a variety of different ingredients, and to complement each other's role. .Usually dubbed the stability of coatings subject to state, so vulnerable to external conditions, the impact of these different defects, such as due to improper storage conditions, storage time, increased viscosity, or solidification occurred too long, but because this quasi-stable state since the tendency of paint .unstable state of the inevitable results. .Another example is the coating formulation is unreasonable, improper selection of raw materials, manufacturing process problems, and inspection, shipping, packaging and transportation. .In particular painting is based coating process for manufacturers product specification requirements, defects still occur, then you can find many reasons from the coatings. .</ P> <p> (2) substrate properties of </ p> <p> As mentioned above, wood and wood materials are unique characteristics of the coating substrate, water (water easy to move), porous, material and .of heterogeneous materials, the defect factor more. .Wood substrate without the patch itself, there are many defects (bug eyes, cracks, rough, fat, oil, etc.), will directly result in coating defects. .Wood moisture content is too high and the water continues to move out, not only before and after coating caused by deficiencies, and after use of wood products is leading to the main cause of damage to film cracking. .Therefore, the timber must first fully understand the wood coating, wood coating quality and good management, can reduce the possible occurrence of many defects. .So when the defect occurs when the coating, the substrate of the factors can not be ignored. .</ P> <p> (3) coating process factors </ p> <p> when the coating and substrate can control the factors that exclude, the occurrence of defects in multi-coating process by the unreasonable design, implementation, etc. are not strictly caused. .Coating process here, including the specific coating process, the process methods and tools used in equipment, especially dry and repeat the process of grinding and other procedures are reasonable and a variety of process conditions, process parameters are normally accurate. .Such as coloring and filling material selection, end finish is necessary, the proportion of paint, thinner varieties and dilution rate is appropriate, such as tools and equipment is the spray gun nozzle and air pressure, oil-water separator is functioning properly, etc. ., in particular coating curing conditions (temperature, humidity, ventilation, dust, drying time and phase, etc.). .</ P>.