Formula of putty coated on gypsum inner wall

Abstract

The invention discloses a formula of putty coated on a gypsum inner wall. The putty comprises the following raw materials in parts by weight: 100 parts of desulfurized gypsum, 5-20 parts of French chalk, 0.3-5 parts of methyl cellulose, 0.1-1 part of polyvinyl alcohol, 0.01-1 part of sodium citrate and 0.01-1 part of redispersable gelatine powder. The raw materials are uniformly mixed and stirred to obtain the product. The initial setting time is 30-110 minutes, the final setting time is 45-125 minutes, the folding strength is 1.76-2.34 MPa, the compression strength is 3.55-5.05 MPa, and the bonding strength is 0.30-0.38 MPa. The invention has the advantages of strong adhesive force, high bonding strength, favorable air permeability, high water resistance, delicate hand feel of the wall surface, soft appearance and favorable tactile sensation.

Description

Technical field:

[0001] The invention relates to a formula of gypsum interior wall plastering putty, which is especially suitable for decorating base surfaces with relatively high humidity, such as kitchens, toilets, basements and the like. Background technique:

[0002] Existing kitchens, bathrooms, basements and other areas that are prone to moisture are prone to powdering, cracking, peeling, and falling off on the walls after being damp. Invention content:

[0003] The task of the present invention is to propose a kind of formula of gypsum interior wall plastering putty which is not easy to crack, peel and fall off after the wall surface is damp, and has strong water resistance. The task of the present invention is accomplished like this, a kind of formula of gypsum interior wall plastering putty is characterized in that: raw material deployment ratio by weight is: 100 parts of desulfurized gypsum, 5-20 parts of talcum powder, 0.3-5 parts of methyl cellulose , 0.1-1 pa...