I. First, make clear: Spraying paint at minus ten tiers Celsius isn't always advocated, with high risks
A low-temperature environment of minus ten ranges Celsius is far past the right construction temperature for most paints (usually 5-35℃), so painting isn't always encouraged. whether or not it is wall paint, wood paint or metal paint, low temperature will at once have an effect on the physical and chemical homes of the paint—for example, latex paint will agglomerate because of low temperature, and oil-primarily based paint turns into too viscous to atomize. The sprayed paint film will either be choppy in thickness or fail to dry usually, and it is simple to have pleasant troubles later, to be able to require remodel as an alternative, wasting time and value.
II. portray at low temperature: those complex troubles could be encountered
when portray at minus ten levels Celsius, there are particularly three center problems: First, the drying speed is extremely gradual. Paint that may dry in 1-2 days at ordinary temperature may also take five-7 days at low temperature. If dust adheres or there may be a mild collision at some point of this period, the paint movie might be directly broken; 2nd, the adhesion of the paint film is poor. Low temperature will prevent the paint from fully penetrating the floor of the substrate, and it is straightforward to peel off later. in particular for painting on metallic surfaces, rust spots can also appear; third, the paint surface is susceptible to defects, together with sagging (tear stains fashioned by using the paint flowing down due to uneven viscosity) and bubbles (terrible volatilization of solvents in the paint resulting from low temperature), which have an effect on the appearance and sturdiness.
III. unique instances: must paint? Do these matters to reduce risks
If portray must be performed at minus ten tiers Celsius due to tight creation period, arrangements are needed: First, select special low-temperature paint, including commercial-grade paint marked "may be constructed at -10℃ to 5℃". This kind of paint is added with antifreeze and may adapt to low-temperature environments; second, create a local heating surroundings. Use a heater or warmness blower to elevate the temperature of the construction region to above five℃ (be aware to keep away from paint and solvents to keep away from hearth), and ensure desirable air flow at the same time to save you the buildup of solvent unstable materials. After creation, hold to preserve the temperature for greater than 24 hours to permit the paint film to dry slowly.
IV. greater cozy: wait for suitable temperature to color, take note of those details
The most cozy manner is to look ahead to the ambient temperature to upward push above five℃ before painting. before painting, test the state of the paint. If agglomeration or delamination is discovered, it wishes to be stirred flippantly first (oil-based totally paint may be combined with a small amount of special thinner to alter the viscosity); throughout production, hold the ambient humidity at 40%-60%, as too high humidity can even have an effect on the drying of the paint film; After portray, avoid establishing home windows for air flow right away. permit the paint film remedy certainly at room temperature, and keep away from touching or wiping it within 7 days to ensure that the paint floor paperwork a solid shielding layer.
