Preparation method and application of modified meerschaum powder

The invention discloses a preparation method and application of modified meerschaum powder. The preparation method comprises the following steps: (1) adjusting the pH value of an aqueous ethanol solution to 3 to 5 with acid so as to obtain a solution A; (2) heating the solution A to allow the temperature of the solution A to maintain at 75 to 85 DEG C so as to obtain a solution B; (3) adding meerschaum powder into the solution B and carrying out uniform mixing under stirring so as to obtain a suspension, wherein the particle size of the meerschaum powder is no more than 60 meshes, and a mass ratio of the meerschaum powder to the solution B is 1: (10-20); (4) adding a 3-mercaptopropyltrimethoxysilane coupling agent into the suspension and continuing stirring for 4 to 8 h; and (5) stopping heating and stirring, separating out the meerschaum powder, cleaning the meerschaum powder with deionized water and carrying out drying so as to obtain the modified meerschaum powder. The modified meerschaum powder is simple