Because epoxy floor paint products have good wear resistance
Because epoxy floor paint products have good wear resistance, corrosion resistance, impact resistance, no joints, solid texture, convenient maintenance, low maintenance costs, etc., although this product has been promoted late in northern China
The saponification resistance of floor resin is better. Because oxygen-absorbing corrosion produces hydroxide ion OH- at the cathode, the pH can even reach 14, which catalyzes the hydrolysis and saponification of acyl groups and reduces the wet adhesion of the paint film. The phthalamide group is more resistant to hydrolysis and saponification than the ester group. Epoxy resin has good wet adhesion and saponification resistance. Epoxy resin primers show greater resistance to saponification than alkyd primers. Epoxy-amine and epoxy/phenolic primers have good corrosion resistance, but the ring Oxygen/phenolic primer requires high temperature curing.
Avoid residual water-soluble components in the floor paint film, otherwise it will easily cause the floor paint film to bubble. If the residual solvent of the floor paint film has a hydrophilic solvent, this solvent is incompatible with the dry paint film of the floor paint and remains as a separated phase, causing the floor paint film to bubble. Zinc oxide should not be contained in the primer. Zinc oxide reacts with water and carbon dioxide to generate slightly water-soluble zinc hydroxide and zinc carbonate, resulting in blistering of the floor paint film. Passivation pigments such as zinc chrome yellow will not work unless they are slightly soluble in water, so their presence in the floor paint film will cause foaming.
Because epoxy floor paint products have good wear resistance, corrosion resistance, impact resistance, no joints, solid texture, convenient maintenance, low maintenance costs, etc., although this product has been promoted late in northern China, but After the first introduction in Beijing in 1999, the northern area gradually accepted and recognized this new product. Today, experts use four words, "hot", "big", "high", and "new" to summarize the characteristics of the floor market in northern China.
In this way, with the rapid development of coating technology, the existence of floor coatings has its necessity and inevitability. According to experts, due to the difference in material properties, floor coatings based on epoxy resin have always become the dominant floor coatings. Traditional solvent-based floor coatings and solvent-free floor coatings have excellent basic performance. However, there are many volatile solvents, which are harmful to the human body and the environment. In addition, because the traditional solvent-based paint film is very dense and has poor air permeability, it is easy to appear when applied to the base surface with heavy underground moisture. Phenomenon such as film blistering and peeling off are not uncommon. Compared with solvent-based epoxy resin coatings, water-based epoxy resin coatings have a microporous structure, which can allow water vapor to penetrate but liquids cannot penetrate, and can release the gas pressure inside the cement to fundamentally solve the problem of paint film bubbling. Fault.