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The paint coating is off paint, the reason for the adhesion is not reliable and the treatment method

  • Categories:Company News
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  • Time of issue:2019-05-11 17:52
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(Summary description)The adhesion of paint in the coating process has a great relationship with the quality of the effect after painting. Excellent adhesion can effectively ensure the progress and quality requirements, while poor adhesion will cause the paint to appear on the substrate. Or it is the problem of the Baige adhesion test to remove the paint. So what is the cause of poor paint adhesion? How to improve paint adhesion? Become an important topic in the coating industry.

In order to judge the quality of paint coating, in addition to the basic hand buckle and the hundred test method, there are actually many tests such as boiling, bending, freezing, stretching, salt spray, and resistance to falling. method. The purpose is to verify the coating effect and quality of the coating, which is a basis for analyzing the conformity of the paint coating and the reasons for poor adhesion.

The paint coating is off paint, the reason for the adhesion is not reliable and the treatment method

(Summary description)The adhesion of paint in the coating process has a great relationship with the quality of the effect after painting. Excellent adhesion can effectively ensure the progress and quality requirements, while poor adhesion will cause the paint to appear on the substrate. Or it is the problem of the Baige adhesion test to remove the paint. So what is the cause of poor paint adhesion? How to improve paint adhesion? Become an important topic in the coating industry.

In order to judge the quality of paint coating, in addition to the basic hand buckle and the hundred test method, there are actually many tests such as boiling, bending, freezing, stretching, salt spray, and resistance to falling. method. The purpose is to verify the coating effect and quality of the coating, which is a basis for analyzing the conformity of the paint coating and the reasons for poor adhesion.

  • Categories:Company News
  • Author:
  • Origin:
  • Time of issue:2019-05-11 17:52
  • Views:
Information

The adhesion of paint in the coating process has a great relationship with the quality of the effect after painting. Excellent adhesion can effectively ensure the progress and quality requirements, while poor adhesion will cause the paint to appear on the substrate. Or it is the problem of the Baige adhesion test to remove the paint. So what is the cause of poor paint adhesion? How to improve paint adhesion? Become an important topic in the coating industry.

In order to judge the quality of paint coating, in addition to the basic hand buckle and the hundred test method, there are actually many tests such as boiling, bending, freezing, stretching, salt spray, and resistance to falling. method. The purpose is to verify the coating effect and quality of the coating, which is a basis for analyzing the conformity of the paint coating and the reasons for poor adhesion.

Before we understand the reason for the poor adhesion of paint, the first thing we need to know is that the adhesion of the paint refers to the surface bonding force between the paint and the substrate. The better the bonding force, the higher the firmness of the coating and the less easy it is. The problem of paint falling out. According to the summary analysis of the problem of paint falling off in plastic and metal materials, we can get three reasons: the adhesion performance of the paint itself, the cleaning and cleaning of the surface of the substrate, and the interlayer between the substrate and the paint. Whether the adhesion is sufficient.

Reasons for the paint falling off and treatment methods

Knowing the common causes of paint adhesion, how to improve it becomes simple and easy. First, we need to have a standard pre-treatment before painting to remove the oil and stain on the surface of the substrate. Focus on creating a good surface environment. Secondly, the adhesion of the paint needs to be improved by adjusting the formulation of the coating resin. Generally, it is necessary to obtain technical support from the paint manufacturer or to add relevant additives for adhesion, but the adjustment is limited. The adhesion between layers actually exists when the two things are combined, but the performance is insufficient, resulting in poor yield. The effective method in the industry is to spray the substrate between the substrate and the paint through the adhesion promoter. To achieve the function of upgrading and promoting mutual integration, it is widely used due to its simple operation method and reliable and stable performance.

The above summary of the reasons for the poor adhesion of paint and the method of improving the adhesion of paint are mainly considered from three aspects: material, paint and adhesion promoter. However, if baking is required during the construction process, it must be ensured. The paint is fully cured. Materials and paints may not change after they have been determined, but the flexibility and efficiency of the adhesion promoters are exerted, which is a way to more easily and quickly improve the adhesion between the paint and the material layer.

 

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