How much do you know about epoxy resins? In fact, it refers to a general term for a class of polymers containing more than two epoxy groups in the molecule. It is a polycondensation product of epichlorohydrin and bisphenol A or polyol. Do you know what are the common problems with this material during construction? Next, epoxy resin manufacturers will take you to see below.
The material has the characteristics of anti-corrosion, abrasion resistance, anti-skid, little pollution and strong decoration. It has been widely used in industrial floors and places where environmental requirements are required. However, due to the influence of construction quality and environmental factors, it is easy to produce some quality problems. The common problems during construction are as follows:
1. Roughness and cracking problems
Roughness phenomenon refers to the appearance of granular materials with different sizes on the surface layer. The main reason is that the coating contains impurities that are not easily dissolved and external dust. The surface cracking phenomenon is due to raw material and construction quality problems, which lead to a decrease in the adhesion of the paint layer. Under the influence of external forces, peeling and cracking phenomena occur.
2. The paint surface is more flowery
refers to the phenomenon that the color of the surface of the coating film is not uniform, and there are streaks and messy colors. The reason is that Jinan epoxy resin is caused by improper ingredients and uneven coating during the construction process.
3. Surface whitening
refers to the whitening of the surface coating after the completion of the construction operation. There are several reasons: the humidity in the air is too high, and too much quick-drying agent is used in the drying process of the coating surface.
4. Color bleeding
Bleeding means that when one color of the primer coating film is covered with another color of topcoat, the surface coating film will be discolored. The main reasons are the following: the primer is not completely dry, the primer and The color of the topcoat has color difference, and the paint contains variegated materials. Wrinkles, pinholes, and wrinkles on the surface of the fisheye coating.
The main reason is that the drying speed of the inner and outer layers of the paint surface is inconsistent, which causes the surface layer to gather up the skin, the pinhole is because the solvent exerts too fast, the paint liquid is not replenished in time, and the fish eye is because the paint or external impurities are mixed to cause uneven coating adhesion.