Vinyl resin paint muterial

Abstract

The present invention discloses vinyl resin, and is especially one kind of paint mixture compounded with acrylate or methyl acrylate, and the paint mixture is painted onto the flow-passing surface of metal member to prevent cavitation erosion. The paint mixture consists of: vinyl resin as basic material, diluent, initiator and stuffing in the weight ratio of 100 to 20-70 to 0.5-2.5 to 0-500, with the vinyl resin is acrylate or methyl acrylate. The paint may be prepared into base liquid without stuffing or facing material with stuffing, and it may have increased supplementary material based on the requirement of engineering.

Description

technical field [0001] The invention belongs to coatings, in particular to a vinyl ester resin coating material mixture used for the anti-cavitation erosion surface protection of metal flow components, in particular to an acrylic ester for the protection or repair of the metal flow flow components anti-cavitation surface of hydraulic structures or methacrylate coated material. technical background [0002] In the past hundred years, people have made considerable progress in the research on cavitation and cavitation erosion. From the perspective of hydraulic fluid mechanics, some methods to prevent cavitation erosion have been found, such as aeration method and changing the flow state to make it practical. The cavitation index σ value obtained from the combination of flow velocity and pressure during operation is greater than the critical value of corrosion damage. However, the above-mentioned methods have their limitations, either the cost is too hig...

AI Technical Summary

Problems solved by technology

That is, the disadvantages of this welding repair method are: expensive, inconvenient construction, long construction period, and the effect cannot be guaranteed

According to its nature and the anti-cavitation erosion surface protection or repair coating requirements of hydraulic structures metal flow components, there are roughly two types: one is based on epoxy resin and added various solid filler anti-cavitation coatings, However, since the coated workpiece and tools need to be kept warm and kept at a high temperature for a long time, it will affect the quality and progress of the coating, and it is not good for the health of the construction personnel.

Epoxy mortar cannot withstand the tearing effect of cavitation negative pressure, and it falls off more; the second type is a flexible coating based on polyurethane rubber, etc., which is water-resistant, high-temperature resistant, and elastic, but it must be thermally coated or coated. In the method of thermal spraying, both of them need to be heated and baked (200-300 °C), the working conditions are harsh, special equipment is required in the construction, the cost is expensive, and the problem of strong adhesion between the coating and the bottom layer has not been completely solved