Winter Paint Whitening Problem Guide

First, the reason for the white paint:

1, the plate moisture content is too high caused by whitening. The reasons for the high moisture content of the plate, one is to buy the plate itself is high moisture content; The second is to buy the plate because of the surrounding environment caused by moisture content.

2, the construction of high humidity, low temperature, water vapor is not easy to release caused by white.

3, the construction is too thick, the moisture in the plate is not easy to release, resulting in water vapor accumulation in the paint film and cause white.

4, the surrounding environment humidity is high, the temperature is low, the water vapor infiltrates into the paint film and accumulates in the paint film to cause whitening.

5. Use paint with more powder and poor transparency.

In general, paint whitening is caused by a variety of reasons.

The winter of jiangsu, zhejiang, anhui, jiangxi, hunan, fujian area sends white because plate moisture content and the moisture content of surrounding environment is unbalanced more, water permeates each other, water accumulation stays in paint film and cause.

Two, paint white problem processing:

1, caused by water vapor whitening, with the air duct around the white point slowly blowing for a few minutes, the symptoms of whitening will be eliminated, with the rise of temperature, the drop of humidity, the plate and the surrounding moisture content will appear in balance, the final whitening will be reduced, slightly will be eliminated.

2. For the whitening that cannot be eliminated, it is recommended to use the following methods: brush the whitening water provided by the company on the whitening surface to ensure that the surface is in a wetting state for 1~3 hours, so that the whitening water can penetrate into the paint film for a long time, so as to bring out the water; After 1~3 hours, clean the paint film surface, wait for the paint film dry, burnish and then re-construction paint, white phenomenon can be eliminated.

(Note: when using the method shown in 2, it is best to choose to be processed after the humidity and temperature have returned to normal, otherwise there will be the possibility of re-whitening, only when the plate and the external moisture content reach the balance will not appear again whitening.)

Three, paint white prevention:

1, the selection of low moisture content of the plate, generally less than 12%, as far as possible in about 10%. Buy good plank to want to nurse, do not let its be affected with damp cause moisture content to rise, good condition is done before construction paint dry processing.

2, do not in high humidity, low temperature under the construction.

3, construction do not be too thick, especially do not one-time thick coating, especially the paint will pour up the construction method must not be used.

4. Choose a primer with low powder and good transparency. General primers contain fillers, fillers are hydrophilic, easier to bind water, good transparency primer does not contain fillers or fillers less.

5. Strengthen after-sales service. More guidance to guide them to correct construction. The moisture content that had better be able to test plank before paint construction (the price on lumber moisture test instrument market is more than 200 yuan).