How many degrees does it take to paint in winter?

The formula of the coating is designed according to the requirements of the construction environment with a temperature of 25 degrees Celsius and a humidity of 75%, and there are also quite high requirements for the coated substrate. The water content of wood paint is 8- 12%, and the water content of wall paint is 8- 10%. Therefore, the suitable temperature range for painting is 8 to 35 degrees Celsius, and it is not suitable for construction if the temperature is too high or too low. Now it's winter, and the temperature is dropping gradually. Paint diseases that are easy to occur in low temperature environment and their prevention methods are introduced as follows: \ x0d \ x0d \ 1. Paint diseases that are easy to occur when wood paint is painted at low temperature due to slow drying include sagging, slow drying or non-drying, sticking back, undercut, wrinkling, whitening, pinholes and bubbles. \x0d\2。 When the weather is windy and foggy and the temperature is 85℃, the oil workers stop construction. \x0d\3。 Sagging-paint flows due to slow drying at low temperature, resulting in uneven thickness of paint film, such as hanging curtains and even beaded tears. Solution: \x0d\a) Use winter thinner to speed up paint drying; \x0d\b) Don't paint it very thick, but brush it twice or more; \x0d\c) Extend the repainting time, and apply the next paint after the previous paint is completely dried; \x0d\d) Add a little thinner to improve the viscosity of the paint. \x0d\4。 Slow or non-drying, back-adhesion, undercut and wrinkling, too low temperature, solvent can not be completely volatilized, resulting in poor curing of paint film. \x0d\ Solution: \x0d\a) Use winter thinner to speed up paint drying; \x0d\b) Properly increase the proportion of curing agent (within 20%, otherwise the paint film will become brittle) to accelerate the curing of paint film; \x0d\c) Good ventilation shall be ensured, and the solvent method shall be completely volatilized to prevent back adhesion; \x0d\d) Extend the repainting time, and apply the next paint after the previous paint is completely dried; To avoid undercutting and wrinkling caused by diluent dissolving the former coating when the former coating is not cured. \x0d\5。 Whitening, low temperature is easy to form moisture and relative humidity on the surface of the substrate >; 85%, the moisture content of the board is >; 12% will be white. \x0d\ Solution: \x0d\e) Before the construction, add 3- 10 white water into the thinner and stir evenly; \x0d\f) Dry the gas accumulated on the surface of the substrate with a dry towel before construction; \x0d\g) During wet-wet construction, the repainting time shall be appropriately extended, and the repainting time shall be no less than 60 minutes and no more than 2 hours. Wet-wet construction can only be carried out once at most, and then construction can only be carried out after the paint film is completely dried; \x0d\h) After water milling, it must be dried for 12 hours before recoating; \x0d\i) The plate must be sealed with DeDebao once after purchase, which can effectively prevent the moisture in the plate from infiltrating into the paint film; \x0d\6。 There are pinholes, bubbles and deep holes on the surface of wood, which have poor sealing performance and slow paint drying, and it is easy to form pinholes from the bottom of wood; There is air in the eye hole of the deep wood, and the paint permeates downward to squeeze out air and produce bubbles in the paint film. \x0d\ Solution: \x0d\a) The plate must be sealed with DeDebao once after purchase, which can effectively prevent the paint from sinking and forming pinholes; DeDebao solves the bubbles in the paint film by penetrating and squeezing air strongly. \x0d\7。 If water mill polishing is needed, the board surface must be completely dry before polishing (48 hours in summer and 96 hours in winter), otherwise the paint film will be foggy and the expected effect will not be achieved. \x0d\8。 The construction temperature of wall latex paint is 85%, so the oiler is required to stop the construction, otherwise it will cause pulverization, paint film peeling and Shui Ying due to poor film formation.