Sealant formula

Abstract

The invention provides a sealant formula which is low in cost and capable effectively saving production cost under the premises of guaranteeing binding strength of products, effectively reducing ratio of tangential to radial shrinkage and improving construction performance. The sealant formula is prepared from, by weight, 55%-60% of heavy calcium powder, 5%-8% of ash calcium powder, 30%-35% of plaster, 1.0%-1.7% of bentonite, 1%-1.5% of latex powder, 2%.-3%. Of hydroxypropyl methyl cellulose, 1%.-3%. of a retarder and 2%.-3.5%. of wood fiber.

Description

technical field [0001] The invention belongs to the field of decoration building materials, in particular to a caulking paste formula. Background technique [0002] The caulking paste is usually a gypsum board seam treatment material mixed with fine hemihydrate gypsum powder (gypsum of paris) and various additives. It generally requires high bonding strength, adhesion, small shrinkage deformation, and relatively high Good workability, construction performance and other characteristics. It is not easy to do this. The production cost of good quality caulking paste is also high, and the market price is high. In order to save costs, some construction units will replace the caulking paste with putty, which will cause the joints to shrink and deform and then crack. Obviously, this affects the quality of construction and customer reviews. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a low-cost caulking paste formul...

AI Technical Summary

Problems solved by technology

It is not easy to do this. The production cost of good quality caulking paste is also high, and the market price is high. In order to save costs, some construction units will replace the caulking paste with putty, which will cause the joints to shrink and deform and then crack

Obviously, this will affect the quality of construction and customer evaluation