Anti-cavitation and abrasion-resistant paint for water pump impellers and preparation method of paint

Abstract

The invention discloses anti-cavitation and abrasion-resistant paint for water pump impellers and a preparation method of the paint. The paint comprises the following components in percentage by weight: 35-70% of a tetrafluoroethylene-vinyl ether polymer, 5.5-12% of a curing agent, 2-10% of a silane coupling agent and a fluoroalkyl silane coupling agent, 15-30% of silicon carbide, 1-10% of nano-composite particles, 0.03-3% of additives, 20-40% of methyl isobutyl ketone and butyl acetate, and 0.001-1% of a drying agent, wherein the nano-composite particles are a mixture of chromium sesquioxide, zirconia and gas-phase silicon dioxide; the additives comprise a leveling agent, an antifoaming agent, a dispersing agent and an anti-settling agent. The paint adopts a special paint formula; a coating prepared by utilizing the paint has a flat and smooth surface, and the adhesive force, the film coating rigidity, the waterproof performance, the salt-fog resistance performance and the abrasion resistance performance of the prepared coating reach 0 degree, 9 H, 3000 h, 2500 h and 5 times of 20 carbon steel respectively.

Description

technical field [0001] The invention belongs to the paint industry, in particular to a water pump impeller anti-cavitation wear-resistant paint. Background technique [0002] As a common power machine, water pumps are widely used in electric power, hydraulic and other fields. The stability and working life of water pumps largely depend on the reliability of their blades. The impeller has been subjected to the impact of high-speed airflow and liquid droplets for a long time. Under the joint action of cavitation and fatigue, the entire impeller will be scrapped to a certain extent and needs to be replaced in time. There are two main types of water pump anti-cavitation wear surface protection technology: the use of metal surface protection and coating protection. [0003] The most commonly used metal surface protection layer is electrode surfacing and wire spraying. The surfacing welding method using stainless steel electrodes can ensure a high bonding strength between the we...

AI Technical Summary

Problems solved by technology

A key problem in the toughening of inorganic nanoparticles is that the nanoparticles are easy to agglomerate, which affects their uniform dispersion in epoxy resin