1. grease paint - the atmospheric corrosion undemanding environment.
Grease coating is a dry oil for a class of the main film coatings. Which is characterized by ease of production, good brushability, good wettability on the object surface, inexpensive, flexible film; but the slow drying of the film, the film is soft, poor mechanical properties, acid resistance, water resistance and an organic solvent is poor. Drying oils often in conjunction with anti-rust pigment composition of the anti-rust paint used in the corrosion insensitive atmospheric environment.
2.the country paint
The lacquer also known as lacquer, paint, is one of our specialties. Lacquer from the sumac grows to cut bark flow out of a milky viscous liquid, muslin filter to remove impurities that. After it is coated on the surface of the object, the color rapidly from white to red, from red to purple, a long time can be turned into a hard, shiny black film. Urushiol is the main component of the lacquer, containing up to 30% to 70%. Generally speaking, the higher the content of urushiol lacquer better quality. Country strong paint adhesion, tough film, good gloss, it is resistant to soil corrosion than water resistance, oil. The disadvantage is toxic, easy to make skin allergies. In addition, it is resistant to strong oxidant, the alkali resistance is poor. Now many modified lacquer paint, to varying degrees, to overcome these shortcomings.
3. a phenol resin coating
Alcohol-soluble phenol resin, a modified phenolic resin, phenolic resin or the like. Alcohol-soluble phenolic resin coating corrosion resistance is better, the inconvenience, but the construction is not very good flexibility, adhesion, has limited application. Therefore often requires the modified phenolic resin. Such as rosin-modified phenolic resin and tung oil refining, adding various pigments, can be obtained by grinding a variety of enamel, tough film, inexpensive, and widely used for furniture, doors and windows, painting. Pure phenolic resin coating adhesion, water resistance to heat, corrosion resistance, good weatherability.
4. epoxy coatings
Good adhesion of epoxy coatings have excellent adhesion to metal, concrete, wood, glass, etc.; alkali, oil and water, excellent electrical insulation properties. However, the aging resistance. Epoxy anti-corrosion coating is usually composed of two components of an epoxy resin and a curing agent. The nature of the curing agent also affects the performance of the film. The commonly used curing agents are: ① fatty amines and their modified compounds. Features can be cured at normal temperature, the greater toxicity of unmodified aliphatic amines. ② aromatic amines and its modified product. The characteristics of the reaction is slow, and often have to heat curing virulent. (3) a polyamide resin. Characterized by good weather resistance, less toxic, good elasticity, corrosion resistance can be somewhat less. ④ phenolic resins, urea resins, and other synthetic resin. These resins and epoxy resins and crosslinked film after baking at high temperature, the film has outstanding corrosion resistance, and has good mechanical properties and decorative. Epoxy ester resin paint is an epoxy ester resin as a film-forming substance a single component coating systems. The epoxy ester resin from an epoxy resin, and vegetable oil fatty acid esterified collectively made. The paint and general epoxy coatings compared to lower-cost, poor alkali resistance. Commonly used for a variety of metal primer and chemical plants outdoor equipment anti-corrosion paint.
5. polyurethane coatings
A polyurethane resin for anti-corrosion coatings often contain two components: an isocyanate group-NCO and hydroxy. When using two-component mixing reaction curing generate polyurethane (PU).
Features: ① physical and mechanical properties of polyurethane coatings. Film hard, flexible, bright, plump, wear-resistant, strong adhesion. ② corrosion resistance is excellent. Oil, acids, chemicals and industrial emissions. The alkali resistance is slightly lower than the epox
