Preparation method of low-temperature-domain high-performance water-soluble damping coating and product

Abstract

The invention discloses a preparation method of a low-temperature-domain high-performance water-soluble damping coating and a product. The preparation method comprises the steps that 1, 30-40 parts ofacrylic resin blending emulsion, 10-20 parts of deionized water, 0.3-0.8 part of defoaming agent, 0.3-0.8 part of dispersing agent, 10-20 parts of 200-1000 mesh of calcium carbonate powder, 10-30 parts of 100-600 mesh of sericite powder, 0.4-0.8 part of thickening agent and 0.1-0.3 part of low-temperature damping performance modifying additive, wherein the acrylic resin blending emulsion is prepared by blending four acrylic resin emulsions with the glass transition temperatures of -40 degrees, -20 degrees, 0 degree and 20 degrees respectively, wherein the weight of each acrylic resin emulsionis 3-10 parts by weight; 2, the acrylic resin blending emulsion, the deionized water, the defoaming agent, the dispersing agent and the low-temperature damping performance modifying additive are putin a stirring container, and stirring is performed at the rotation speed of 500 rpm for 5 minutes; 3, the calcium carbonate powder and the sericite powder are added into the stirring container, and stirring is performed at the rotation speed of 1000 rpm for 10 minutes; 4, the thickening agent is added into the stirring container, and stirring is performed at the rotation speed of 1500 rpm for 10 minutes; 5, the low-temperature-domain high-performance water-soluble damping coating is obtained.

Description

technical field [0001] The invention relates to a water-based damping paint, in particular to a preparation method and a product of a high-performance water-based damping paint in a low temperature range. Background technique [0002] At present, the main damping coatings in the industry include traditional polyurethane / epoxy resin constrained layer damping coatings and water-based damping coatings. Most of the former will release VOC and cannot be sprayed on a large scale, and cannot meet the technical requirements that the composite loss factor is greater than or equal to 0.1 at -40°C to -20°C, and the overall composite loss factor is greater than or equal to 0.05 at -40°C to 30°C; this makes it The application in some industrial fields such as high-speed rail, aerospace and wind power in extremely cold areas is limited. In the field of wind power in extremely cold areas, it is necessary to meet the technical requirements of the composite loss factor greater than 0.1 below...

AI Technical Summary

Problems solved by technology

Most of the former will release VOC and cannot be sprayed on a large scale, and cannot meet the technical requirements that the composite loss factor is greater than or equal to 0.1 at -40°C to -20°C, and the overall composite loss factor is greater than or equal to 0.05 at -40°C to 30°C; this makes it The application in some industrial fields such as high-speed rail, aerospace and wind power in extremely cold areas is limited. In the field of wind power in extremely cold areas, it is necessary to meet the technical requirements of the composite loss factor greater than 0.1 below -20°C in order to achieve the safety and stability of the wind power system; The main defect of the latter is that it is difficult to achieve the damping performance of the composite loss factor greater than 0.1 in the low temperature range below -20 °C