A kind of low surface treatment high-performance anti-rust primer for mechanical equipment and its preparation method

Abstract

The invention discloses a high-performance rust inhibiting primer for low surface treatment of mechanical equipment. The high-performance rust inhibiting primer is composed of a component A and a component B, wherein the component A comprises the following components in parts by mass: 50.0-57.0 parts of bisphenol A epoxy resin, 2.0-6.0 parts of modified resin, 1.0-3.0 parts of reactive toughening agent, 1.2-2.0 parts of penetrating agent, 9.0-11.0 parts of organic solvent, 2.0-5.0 parts of gradient alcohol solvent, 0.2-0.5 part of defoaming agent, 0.3-1.5 parts of wetting dispersant, 24.0-55.0 parts of rust inhibiting filler, 1.0-3.0 parts of rust converting agent and 0.1-0.3 part of substrate wetting agent; the component B comprises the following components in parts by mass: 13.0-14.0 parts of cardanol modified Mannich amide curing agent, 0.3-1.0 part of adhesive force promoter and 5.0-9.0 parts of organic solvent; and the mass ratio of the component A to the component B is 5:1 to 6:1. The primer has excellent adhesive force and favorable curing and film forming properties when coated on a wet substrate with the rust layer thickness of less than 80mum, so that the requirement for low surface treatment of the mechanical equipment is met.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment coatings, and in particular relates to a low-surface-treatment high-performance antirust primer for mechanical equipment and a preparation method thereof. Background technique [0002] The commonly used surface treatment methods for mechanical equipment are: manual derusting, sand blasting, shot blasting and chemical derusting, among which sandblasting and shot blasting are the most common methods. The biggest advantage of this rust removal method is high efficiency, low price, good effect, and more suitable for processing large components. At present, domestic mechanical equipment has a high self-made rate, a wide variety, complex shapes, weird structures, many dead ends, and large size differences. , the requirements for sand blasting and shot blasting are high, and the sand blasting and rust removal standards cannot be fully met, and it is prone to incomplete rust removal, insuffic...

AI Technical Summary

Problems solved by technology

Therefore, the coating can solve the current high requirements for the surface treatment of the substrate for the primer of my country's mechanical equipment (it is easy to cause the coating to fall off due to poor sandblasting or shot blasting), low coating efficiency, high coating cost and poor corrosion resistance. pending issues

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