High-solid content single-component seam beautifying agent and preparation method

The invention provides a high-solid content single-component seam beautifying agent which is prepared from, by weight, 20-30 parts of silicone acrylic emulsion, 5-8 parts of pearlescent pigment, 55-70 parts of transparent filler, 0.2-0.5 part of preservative, 0.2-0.5 part of mildew preventive, 0.2-0.5 part of antifoaming agents, 0.2-0.5 part of thickening agents and 1-1.5 parts of film formation auxiliaries, wherein the silicone acrylic emulsion is copolymer emulsion of organic silicon alkyl oxide and acrylic ester, the pearlescent pigment is pearlescent pigment powder with the particle size being 400-800 meshes, and the transparent filler is nano-fumed silica. The seam beautifying agent is high in solid content and capable of effectively solving the problems that shrinkage is serious after product construction, and one-time formation cannot be achieve, has soft pearly luster and rich color, high waterproof performance and good weather resistance and is particularly suitable for being used as a joint mixture of fancy tiles, mosaic or stone. The invention further provides a preparation method of the high-solid content single-component seam beautifying agent.