What are the reasons for the appearance of small bubbles in the primer after the application of single component polyurea?

The use of single component polyurea is widely used in many protective construction projects. It can effectively ensure that the project is not corroded by water, chemicals, etc., and has good wear resistance. Therefore, in many projects, single component polyurea is chosen when selecting protective materials.

For the application of single component polyurea, construction is a key factor in ensuring its effectiveness. However, in some cases, problems may also arise, such as small bubbles in the primer. So, what are the reasons behind this phenomenon?

1、 Poor equipment quality, poor equipment heating, and uneven mixing result in poor adhesion between the polyurea coating and the substrate.

2、 Material issues, in the selection and control of product materials, the quality is not well controlled, and the selected product quality is not up to standard.

3、 Poor substrate treatment and poor adhesion result in bulging and bubbling.