The frost has come. It is the beginning of the transition to autumn and winter. The weather is getting colder. Everyone should pay attention to adding cold. At the same time, the coating project will encounter problems during construction. The paint manufacturer Ali master water paint will analyze for you: The construction conditions and requirements of the paint are applied to the construction of the exterior wall paint. Some projects are required to enter the winter after the temperature is below 5 °C. Construction is still required. In order to ensure the construction quality, the following matters should be paid attention to during the construction period: 1. Base inspection and treatment The base treatment is the basis of the coating project. The contents of the base treatment include: removing dust, oil and loose materials on the surface of the base layer. Reduce or eliminate surface defects; improve the physical or chemical properties of the substrate surface. 2. Putty construction For the construction of the coating system, the construction of the winter construction should ensure the drying of the substrate and the surface temperature of the wall before construction. When the temperature is lower than 5 degrees during the daytime, try to construct on the wall with direct sunlight, the lowest temperature at night. Should be higher than 0 ° C, otherwise it can not be applied to avoid the putty layer is frozen. 3. Polish the putty and judge the dry condition. The putty must be completely dry before grinding, so that the putty can be polished and the non-stick sandpaper and the surface flatness are controlled. If the putty is not dry or frozen, the phenomenon of putty sticking sand will occur when grinding, and the surface is not easy to be smoothed. 4. Construction of coatings for coatings: Before painting, make sure that the substrate is completely dry. The construction temperature of the water-based coating should be controlled above 5 °C. During the drying process, the emulsion will lose its viscosity when the temperature is below zero. The knot and film forming function ensures that the minimum temperature during film drying is not lower than 0 °C. 5. The storage of paint enters the winter paint construction. The paint stored on site should be placed in the indoor classification code and ensure that the indoor temperature is above 0 °C. When the temperature is lower than 0 °C, heating or electric heater should be used to raise the indoor temperature. The open flame raises the indoor temperature. Unused paint in the construction should be placed indoors, and the frozen product will not be used again. 6. Paint film maintenance and finished product protection film to achieve the drying and best performance on the surface of the object, the standard temperature of 25 ° C takes 7 days, for the winter coating construction environment temperature is generally low, the film is dry and reach the most The time for good performance should be relatively extended. During this period, the pollution and bumping of the surface of the paint film should be minimized to avoid the effect of repair caused by pollution and bumping. Into the winter construction, according to the construction conditions on the site, it is necessary to take appropriate protective measures to avoid freezing the coating film. To ensure the smooth progress of the project coating quality and construction progress. Http://news.chinawj.com.cn
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