Practical Grey Auto Paint Primer Harmless Corrosion Resistant

Product Description

M-505 primer is the basic material for surface treatment of car body steel plates. As the first layer of composite coating on car body paint surface, its core function is to provide adhesion foundation for subsequent coatings and prevent corrosion of car body steel plates. Although it cannot fill the surface defects of the car body, it can adapt the bare metal surface to putty, intermediate coating, and topcoat, and is a key intermediate layer connecting the coating and the car body.

The correct selection of primer is crucial, as it not only affects anti-corrosion and adhesion, but also relates to spraying costs, construction convenience, paint film durability, and overall vehicle coating quality. In addition, construction techniques such as film thickness, uniformity, dryness, use of diluents, environmental temperature and humidity, and substrate pretreatment also directly affect the quality of primer coating.

Common body repair primers include phosphating primer, epoxy primer, and polyurethane primer. The selection should comprehensively consider the paint quality requirements, substrate material, and matching topcoat. M-505 primer has the following characteristics: excellent adhesion to the metal surface of the vehicle body after pretreatment; Strong resistance to corrosion and chemical erosion; Capable of passivating metal surfaces, achieving the "three proofing" sealing effect of waterproofing, oxygen resistance, and ion penetration prevention; Good compatibility with metals, putty, intermediate coatings, and topcoats; Excellent construction performance.

• The soil primer has excellent adhesion to the metal surface of the car body after surface pretreatment;
• The soil primer layer has excellent corrosion resistance and chemical resistance;
• The soil primer layer should have the performance of passivating the metal surface and excellent sealing to the outside world, that is, the anti-"three seepage" performance (water seepage, oxygen seepage, ion seepage);
• In addition to good compatibility with metal, the soil primer also has the characteristics of good compatibility with putty, intermediate coat primer or topcoat layer; the primer should have good construction performance