Long-acting anti-corrosion, weather-resistant, ultra-fast-drying coating and its preparation method and application

Abstract

The invention relates to a long-acting corrosion-resistant weather-resistant ultraquick-drying paint, and a preparation method and application thereof. The long-acting corrosion-resistant weather-resistant ultraquick-drying paint is composed of a main component and a curing agent in a weight ratio of 100:40-100:60. Radix asparagi resin is compounded with a pigment, an antirust, a filler, a dispersant, a defoaming agent, a leveling agent, an anti-sagging agent and matched with isocyanate, a catalyst, a diluter and the like to prepare the long-acting corrosion-resistant weather-resistant ultraquick-drying paint. The paint can be coated on various steel material surfaces under the condition of natural drying or low-temperature baking; and when the thickness of the paint film for the primary application is 20-50 mu m, the paint film can become dry quickly, can not sag, is flat, has excellent physical and chemical properties, and has excellent effects on protecting and decorating steel products. The invention overcomes the defects of slow drying, inadaptability to large-scale production line, poor corrosion resistance, poor weather resistance and short protection time in common automobile frame protecting paint. The invention can be widely used for coating automobile frames and parts, oil tanks, pipelines, steel structures and other products.

Description

technical field [0001] The invention belongs to the field of coating protection for iron and steel base products, and relates to aspartic resin coatings, in particular to a long-acting anti-corrosion, weather-resistant, super-fast-drying coating and its preparation method and application. Background technique [0002] From 2005 to 2010, China's automobile production increased from 5.7 million to 18.26 million per year, and the amount of automotive coatings also increased significantly, including the amount of paint used on automobile frames. China's container industry is also among the best in the world. CIMC and Taiping Group are both large container production groups, which have high requirements for anti-corrosion paint and a large amount of consumption. With the enhancement of domestic awareness of environmental protection and personal protection and the implementation of the national industrial policy of energy conservation and emission reduction, the requirements for a...

AI Technical Summary

Problems solved by technology

In the automotive industry, the car frame is directly transported after painting or needs to be exported to overseas. The protective coating of the car frame needs to have excellent corrosion resistance and weather resistance. Generally, the frame protection is sprayed after cathodic electrophoresis coating Quick-drying protective wax, but the protective wax can only play a temporary protective role (2-3 months), if spraying weather-resistant acrylic polyurethane paint (drying speed is too slow), it will cause new problems that cannot meet the car painting process