Anticorrosive coatings for cutting tools

An anti-corrosion coating for knives, which comprises a basic coating and a silicone resin, the volume ratio of the basic coating and the silicone resin is 1:0.5-4; the volume percentage of the components of the basic coating is: pH adjustment The functional catalyst is 5-25%, the functional catalyst is 0.001-0.7%, the siloxane composition is the balance, and the functional catalyst is a catalyst containing carbon powder; wherein, the solid-liquid ratio of the carbon powder to the catalyst is 1:5-15 ; The catalyst, its component volume percentage is: zirconate 20-60%; acetylacetone; 1-15%; For: 7-25% of diphenyl dimethoxysiloxane, 7-15% of methyl trimethoxysiloxane, 1-5% of γ-glycidyl etheroxypropyl trimethoxysilane, Phenyl trimethoxysiloxane is 7-10%, and propylene glycol methyl ether is the balance.

The present invention forms a spatial cross-linking structure through zirconate, acetylacetone and isopropanol, which is beneficial to control the mild progress of the reaction, and can control the reaction rate more than the catalyst using only zirconate.

Carbon powder preparation method, its concrete steps are:

(1) Carbonization: apricot shells, walnut shells and coffee grounds are used as raw materials. The mass ratio of the three raw materials is 1:2:1. First, they are dried at 150-180°C for 1-2 hours, and then the temperature is raised to 300-300°C. Calcining at 400°C for 1-2 hours, and then heating up to 600-700°C for 1-2 hours to obtain multifunctional carbon powder;

(2) Micronization: micronize the multifunctional carbon powder and grind it into 30-200 nanometer multifunctional carbon powder; the preparation method of the catalyst is as follows: the temperature in the reactor is controlled at 40℃. Isopropanol, add zirconate while stirring, and stir slowly for 5 minutes until the mixture is uniform; slowly add acetylacetone dropwise to the above mixed solution in the reactor under stirring, and after the dropwise addition, set the temperature at 40°C React for 1 hour, cool and discharge; the preparation method of the functional catalyst is as follows: adding carbon powder into the catalyst, stirring continuously, and the reaction time is 1-3 hours.