Basil Oil,Chinese Herbal Oil,Evening Primrose Oil,Chinese Medicine Oil Ji'An ZhongXiang Natural Plants Co.,Ltd. , https://www.zxessentialoil.com
(1) Poor surface, oily substances on the surface, the foundation is not cleaned, and the adhesion after conjunctiva is not good.
(2) The coating is over-diluted, the surface is too smooth, the coating film is too thin after coating, the adhesion is not good, and cracking and peeling occurs.
(3) Put the putty on the cement plastering surface and brush the paint. The paint will make the film roll up and fall. Because the underlying oil absorption of the unwashed oil is strong, the oil of the putty and the paint of each layer is absorbed by the bottom layer and is reduced, so that the paint is easily deteriorated and becomes brittle after being formed into a film.
(4) If the primer is not dry, apply the surface coating. When the base is dry and shrink, the surface coating will crack.
(5) The quality of the coating is not good, and there are too many resin and colloidal components in the coating, which is easy to be brittle after film formation.
(6) The base layer is not dry.
The following measures can be taken:
(1) Remove the impurities of the Base Oil, the base layer should be smooth, flat and dry, and the water content should not exceed 10%.
(2) The base layer to be cleaned must not be neglected, especially on the surface of the cement. It must be brushed with oil before embedding the putty.
(3) Pay attention to the proper resin and gel composition in the paint. After the primer is applied, brush the paint.
How to prevent the wood grain of the lacquer varnish is unclear. The varnish is more popular in the decoration of wooden doors and fine wood products. The most common quality problem of the varnish is the different shades of wood and the wood grain is blurred. The main reasons for this consequence are:
(1) The paint storage time is too long, the operation is not evenly stirred, the color is precipitated, the upper part is shallow, and the lower part is deep.
(2) The material of the wood is different, and the coloration is different. The hard wood is not easy to be colored, and the soft wood is easy to be colored.
(3) The paint bristles used are too hard or too soft, and the color of the repeated painting is deep.
The following precautions can be taken:
(1) Stir frequently when using paint to prevent uneven coloration caused by precipitation.
(2) Different brushing methods are used according to the material. The surface of the dark wood should be bleached, and the light part should be dyed to make the color uniform and uniform.
(3) Apply with a suitable paint brush, and operate accurately and quickly.
Method for preventing latex paint from cracking and peeling
The coating film is broken into small pieces and floated up from the object surface, and gradually falls. This is called cracking and peeling. The main reason is: