What is the main cause of common diseases among interior wall coatings?

What is the main cause of common diseases among interior wall coatings?
The inner wall paint is very important to people's life and health, but many times after a period of decoration will appear some common diseases such as cracking, shedding, flowering and so on, then the main reason is what causes it? Find the reason to find the best way to solve it.
the main reasons for this: the finish flowers, uneven color.
1, the quality of the paint itself is
of
. If the paint itself has a floating color. This is due to the use of pigment density difference in the paint is too large, resulting in a small density of pigment particles floating on it, dense particles in the lower part of the accumulation, resulting in color separation. Although the construction is fully stirred, but in the brushing and drying process, the coating is still prone to color differences, paint dispersion in the paint is not good or uneven may also cause color flowering. Pigment dispersion is not good or several pigment dispersion is not uniform, in the brush or roller floating construction, in the direction of brush, roller easy to produce stripe color difference.
2, improper construction caused uneven brushing, construction technology is not skilled will also cause different colors. Pigment and base material ratio is not appropriate, pigment, filler too much, resin composition is too little, uneven color display. The base alkaline is too large, and the pigments used in fillers that are resistant to alkali are also prone to uneven color.
two main reasons: paint finish skin, cracking, shedding.
1, shedding itself into a film is not good, such as latex paint construction temperature is too low, emulsion itself can not form a continuous coating film caused by cracking, water and moisture will fall off.
2, paint parts, pigment, filler content is too high, resin content is too low, resulting in poor film adhesion.
3, the grass-roots loose dust, oil pollution and other unclean things, coating film and grass-roots adhesion is not good.
4, grass-roots level treatment, the use of putty strength is low, easy to powder, especially in the kitchen bathroom and other places with high humidity cellulose white putty, putty strength is low, water resistance is very poor, easy to expand in water, causing foaming, shedding.
5, the grass is too smooth, easy to cause the coating film adhesion is not good.
6, improper construction, the first coating is not completely dry, that is, the application of the second coating. Due to the different internal and external drying speed, resulting in the coating film cracking.
In addition, the inner wall paint needs to choose environmentally friendly and healthy type, in modern life, many people are troubled by sub-health, dizziness, fatigue can not lift the spirit, if the inner wall paint brand choice is not good, it may cause formaldehyde and other harmful gas pollution, serious harm to family members and their own health.