Cavitation-resisting material for hydraulic engineering repairing

Abstract

The invention discloses a cavitation-resisting material for hydraulic engineering repairing. The cavitation-resisting material for the hydraulic engineering repairing is prepared from the components in parts by weight: 25 to 45 parts of modified alkyd resin, 20 to 30 parts of nano silicon dioxide, 5 to 12 parts of aluminum tripolyphosphate, 5 to 15 parts of titanium dioxide, 3 to 5 parts of a de-foaming agent, 2 to 6 parts of a curing agent, 2 to 7 parts of an anti-flash-rust agent, 5 to 15 parts of a flatting agent and 35 to 50 parts of de-ionized water. The cavitation-resisting material has a structure formed by drying and is not easy to age; a paint film is flexible and firm, has friction-resisting and alkali-resisting properties and does not cause damages to environment and human bodies; after the cavitation-resisting material is brushed, the paint film has a rapid drying speed, extremely small odor, high surface glossiness and strong adhesion force and extremely excellent corrosion-resisting property and wear-resisting property, so that the cavitation-resisting material is suitable for the field of surface coating of metal including steel, aluminum materials and the like; the cavitation-resisting material accords with consumption demand of modern people relatively well, is suitable for popularization in the future and has certain popularization value.

Description

technical field [0001] The invention relates to the technical field of anti-cavitation materials, in particular to a hydraulic repair anti-cavitation material. Background technique [0002] Cavitation erosion is also called cavitation erosion and cavitation erosion. Under the conditions of high-speed flow and pressure change of the fluid, cave-like corrosion damage occurs on the metal surface in contact with the fluid. It often occurs in the high-speed decompression area such as the tip of the centrifugal pump blade, where a cavity is formed. The cavity is crushed in the high-pressure area and generates impact pressure, destroying the protective film on the metal surface and accelerating the corrosion rate. The characteristic of cavitation is that many small pits are formed on the metal surface first, and then gradually expand into caves. After the anti-cavitation materials on the market are used in humid places, the paint film is not completely cured, causing the paint fil...

AI Technical Summary

Problems solved by technology

The characteristic of cavitation is that many small pits are formed on the metal surface first, and then gradually expand into caves. After the anti-cavitation materials on the market are used in humid places, the paint film is not completely cured, causing the paint film to bulge and peel. There is a serious problem with the adhesion of the skin, and the paint film has no gloss and poor wear resistance. However, the materials used in the current hydraulic engineering repair cannot perform cavitation resistance well, and the effect is not good, and it is easy to be damaged. damage, not suitable for long-term use, therefore, we propose a hydraulic repair anti-cavitation material