四虎影视一区二区精品_国产亚洲一级对白_久久嫩草av一级无码专区_色─情─乱─伦视频_亚洲精品人妻少妇_最好免费观看高清电影_亚洲中文字幕在线资源站_国产乱了乱了真实在线观看_天堂在线www天堂_国产精品午夜免费视频

1. Peeling: refers to the surface adhesion phenomenon that occurs when car paint (self drying solvent based paint) comes into contact with air.

The primary reason for this is:

(1) The car paint tank may not be properly sealed, or the car paint may have a large contact area with the air;

(2) Excessive increase in drying agent;

(3) No anti skinning additives added;

(4) The storage period of car paint is too long or the storage temperature is too high.

Solution:

(1) The car paint bucket should be sealed as well as possible, and the contact area between the paint and air should be minimized as much as possible;

(2) Adjust the increase in drying agents to an appropriate scale;

(3) Add an appropriate amount of anti skinning additives;

(4) Pay attention to the storage environment and store in a cool and dry place.

2. Deposition: refers to the phenomenon of partial deposition of car paint during storage or use, which is called deposition;

The primary reason for this is:

(1) Excessive use of fillers in car paint; Excessive difference in density between pigment and resin;

(2) The reaction between pigments and resins generates sediment;

(3) The storage time may be too long or the storage temperature may be too high.

Solution:

(1) Reduce the content of fillers or select suitable fillers;

(2) Stir thoroughly and evenly during use;

(3) Adjust the appropriate formula;

(4) Select the appropriate storage temperature and storage period.

3. Thickening: refers to the phenomenon where the viscosity of car paint increases continuously during storage or use, until it exceeds the upper limit of the technical specifications.

The primary cause of occurrence:

(1) The acidity and alkalinity of pigments and resins in paint are different, resulting in the formation of soap;

(2) Excessive volatilization in car paint;

(3) The two component car paint thickens with increasing time after preparation;

(4) The storage period is too long or the storage temperature is too high.

Solution:

(1) Select pigments with equal properties to match with resins;

(2) Car paint should be sealed as much as possible without air leakage;

(3) After the two component sedan paint is prepared, it should be used up within the specified usage period;

(4) Select the appropriate storage temperature and storage period.

The storage process of paint and coatings generally presents the following problems, not only for sedan paint. A good idea is that the storage time of paint and coatings should not be too long, and should be applied quickly. The effect is good. When choosing sedan paint and paint coatings, try to choose those produced in the near future. Preventing the selection of paint that has been stored for too long can reduce the probability of paint problems.

Article source: Qingyuan Automotive Repair Paint http://www.jinliangxincai.com/