Cold air has been shipped! How do I paint water-like paint in the coming winter?

It's coming, it's coming! Autumn with cold air down the south, packed and shipped! The most heard words from the previous few days of plummeting temperatures were "frozen to death
the weather forecast shows that from tomorrow until the 12th, there will be a new cold air from west to east to the north of our country to create wind cooling weather. Netizens have feeling: autumn this is after drinking milk tea to go?
with the decrease of the temperature, the temperature difference between day and night increases, autumn and winter will have a great impact on the construction of paint. Non-drying, hanging and other ills are common problems in autumn and winter paint construction, which plagues many construction teams

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Have "environmental protection", "fashion" temperament, water-based paint once listed to become the darling of the paint industry, by the end-user favorite, but because of the "proud", "high cold" personality, water-based paint construction process often need a hundred care, a little careless will appear coating accidents. Coupled with the coming of winter, the construction of water-like paint is facing a huge test.
below for summing up the experience and lessons of water-based paint winter coating, after a lot of detailed theoretical exploration and practical research, brought water-based paint winter painting "six-step" note analysis, to help you easily play winter coating.
step1 substrate treatment - "three degrees"
cleanliness: oil removal, rust removal must be carried out before coating, in order to reduce paint film defects (ideal rust removal grade: injection cleaning Sa21/2 levels) roughness: smooth, dense surface to be treated to the appropriate roughness, substrate temperature control at 10 to 50 degrees C is appropriate;
International common surface treatment standards comparison
Step2: water paint deployment - "good water"
can only use pure water or drink tap water, can not use hard water, salt water, acidic water, moldy water, can not add oily materials, otherwise there will be particles, shrink holes and other issues;
Step3: Construction viscosity - "high point good"
water-based industrial paint viscosity should be higher than the same type of oily products, water-based paint atomization process thinner volatilization than paint less, if the viscosity is low easy to produce flow hanging. Ideal construction viscosity range: 20 to 70s (4 cups), water-based paint under high viscosity easy to atomize, easy to construct;
Step4: coating equipment - "to be dedicated"
water-based paint coating can use oil spray guns, but before use, the residual solvents and coatings in the spray gun need to be thoroughly cleaned. All lines and metal parts in contact with water-based paints are made of stainless steel. Hydroplasty spraying, water-like paint generally does not need to be adjusted, but spray equipment (spray gun, pump) need to be replaced with water-specific equipment
Step 5: coating matching - "look recommended"
metal white blank surface must be coated with primer or primer paint, not direct construction paint. Water-like paint spray film thickness should not be too high, otherwise easy to hang and affect dryness. It is recommended that the dry film thickness of each channel: the finish is not greater than 40 m, the primer is not greater than 60 m. Recommended thin coating multi-channel, you can use the "oil bottom and water surface" matching, but large-scale coating before the need to verify adhesion. It is not recommended to "underwater and oil surface", especially on a single-component water-like primer construction paint;
Step6: coating drying - "controlling temperature and humidity"
increase the temperature control, dehumidification equipment, to ensure that the coating ambient temperature is not less than 10 degrees C, humidity is not higher than 75%. If you can in the best construction window (temperature: 20 to 35 degrees C, humidity: 45 to 70%), the coating effect is better
after the above "six steps" careful care, water-based industrial paint "high-cool Miss" seconds become "soft and cute", showing "fashion", "environmental protection" temperament at the same time, the coating effect also captured the hearts of more users.
about the winter coating summary - only the construction environment is controlled, the coating process is reasonable, in order to do a good job of water-based paint winter coating!
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