PU varnish construction precautions

China Paint Online News Information
First, PU varnish construction precautions: the selection of low water content of the plate, the general plate moisture content should be less than 12%, as far as possible in less than 10%. Buy a good plate to be well protected, do not be affected by moisture caused by rising water content, good conditions before the construction to do drying treatment. Avoid whitening, cracking and other phenomena due to plate moisture problems after decoration.
, when using paint, we should pay attention to the difference between winter products and summer products. Due to differences in temperature, the company in order to facilitate the construction of paint and improve the quality of paint film, summer products will be adjusted to be slower and drier, and winter products will be adjusted slightly faster dry. Therefore, summer products should not be used in winter, otherwise, because of slow drying and bring bite primer and other paint film ills. Should use the company's matching curing agents, thinners, otherwise it will cause adverse paint film ills., strictly in accordance with the company's label to provide paint and curing agent ratio, can not be arbitrarily added less or more reinforcement agent, otherwise, will cause bite or cracking and other paint film ills. When painting, should be stirred evenly, filtered with 200 filter cloth, still for 15 minutes after de-foaming and then construction. (Note: the company's label ratio for the quality ratio) 4, can not be because of personal point of view issues to add chemical additives such as drying agents, otherwise it will cause cracking and other paint film ills.
, paint construction, construction temperature can not be less than 5 degrees Celsius, humidity can not be greater than 85%.
, prohibit each layer of poor drying, not normal grinding that construction, otherwise easy to cause bite bottom, shedding and other phenomena.
, strictly prohibited one-time thick coating, otherwise it will cause bite bottom, whitening, cracking, pinholes, bubbles and other paint film ills.
, after tuning the paint placement time should not be too long, the longer the time, the more gloss will drop.
9, the viscosity of the paint varies with the temperature changes, when the temperature is lower is the viscosity will increase a lot, which will lead to a greater amount of diluent, at this time the paint's gloss, fullness will be reduced.