The preservation and construction of coatings in building materials!

the original title: the preservation and construction of paint in building materials!paint how to save and construction, any product has a shelf life, if the shelf life, the quality of the product will be a problem, paint is the same. How to prevent paint deterioration, construction needs to pay attention to what place?01, production is not in place (1) production of fillers water content is too high;(2) production and operation process (including feeding order, reaction temperature and time, etc.) out of control;(3) thinner does not meet the requirements of ethane grade;(4) paint packaging barrel leakage, mixed with moisture or moisture in the air;(5) the packaging barrels are filled with reactive substances, such as water, alcohol, acid, etc.prevention and solution:(1) raw material specifications must comply with the formulation, process requirements, strictly control the moisture content of fillers;(2) in strict accordance with the process conditions of production, feeding order, reaction temperature and time control within the prescribed range;(3) grasp the product packaging management and storage conditions control.02, crust coating in the storage surface to form a layer of hard conjunctiva coating phenomenon called conjunctiva. The reasons for this are:(1) paint packaging barrel seal is not strict or the packaging barrel has sand eye;(2) the catalyst is used improperly or overused.prevention and solution to prevent coatings from producing crust:(1) use suitable catalysts in production, and strictly control the amount of catalysts;(2) paint packaging barrels should be sealed tightly, to prevent entry into the air; (3) can be added anti-clumping agent butrontone, cycloketone, etc. 03, precipitation pigment and resin divided into obvious two layers, the bottom pigment sometimes clumps can not stir up the phenomenon called precipitation. The reasons for this are: (1) paint viscosity is small, the amount of thinner is too large, the resin content is small; (2) pigment shady relative lysing and particles too coarse; (3) poor wetting of pigments; (4) storage time is too long. prevention and solution: (1) add the appropriate amount of organic bentonite and other coatings commonly used anti-sink agent; (2) improve the fineness of the pigment, add a suitable face filler moisturizer; (3) in the storage process regularly put the paint barrel upside down or horizontally, coating before use stirring evenly, should be used within the specified time. 04, flow hanging on the vertical facade construction, part of the paint flowing down, resulting in a similar phenomenon of tears or hanging curtain is called flow ingress. The reason seisluding: (1) construction stick through low; (2) a solvent that is volatile too fast or too slow. Volatile too fast solvent is often in the coating film has not been completely leveled before the solvent evaporated off, and the choice of volatile too slow solvent, paint on the vertical surface of the fluidity, will form a tear or curtain; (3) the construction site temperature is too low or humidity is too large; (4) paint contains too much heavy pigment, pigment wetting is not good; (5) paint is applied too thick at once, etc. measures to prevent the formation of a flow of coatings: (1) appropriately increase the amount of thickener; (2) control the appropriate construction viscosity; (3) the construction environment temperature is best (20 to 30) c; (4) coating once should not be too thick, not more than 0.5mm as appropriate; (5) adjust the volatile speed of the thinner, pay attention to the combination of volatile fast and slow solvent use. . Responsibility Editor:
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