Building top layer joint mixture additive and preparation method

Abstract

The invention discloses a building top layer joint mixture additive. The building top layer joint mixture additive is characterized by comprising, by mass, 2-3 parts of ethylene-vinyl acetate copolymer, 8-12 parts of glass beads, 2-2.4 parts of fumed silica, 1-1.5 parts of acrylic resin, 3-6 parts of hydroxypropyl methyl cellulose, 1-1.3 parts of inorganic aluminum salt waterproof agent, 1-1.2 parts of organic silicon water repellent, 0.5-1.5 parts of aluminum-magnesium silicate, 1.5-1.9 parts of RTV organic silica gel and 2-3 parts of lignin fiber. The ethylene-vinyl acetate copolymer and the acrylic resin are ultrasonically dispersed for 0.5-1 h, then, the fumed silica, the inorganic aluminum salt waterproof agent, the organic silicon water repellent, the aluminum-magnesium silicate and the RTV organic silica gel are added for high-speed stirring and dispersing for 1-1.5 h, finally the glass beads, the lignin fiber and the hydroxypropyl methyl cellulose are added, and the temperature is slowly decreased to reach the room temperature to obtain the building top layer joint mixture additive.

Description

technical field [0001] The invention relates to a kind of caulking agent for construction, in particular to a kind of caulking agent additive for building top layer and its preparation method. Background technique [0002] Because the caulking agent can perfectly repair the cracks or damages on the ground surface, and it can also be prepared in rich colors, it is more and more popular among customers. However, most of the existing joint fillers are made of cement, together with additives commonly used in cement, which have the disadvantages of environmental resistance and environmental protection, and have great limitations in application occasions, safe use, and long life. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the invention provides a joint filler additive for the top layer of a building and a preparation method. [0004] The technical scheme adopted in the present invention is: a building top layer caulking agent additive, compr...

AI Technical Summary

Problems solved by technology

However, most of the existing joint fillers are made of cement, together with the additives commonly used in cement, which have defects in environmental resistance and environmental protection, and have great limitations in application occasions, safe use, and long life.