The application of adhesives in gypsum dry-mixed building materials is second only to water-retaining agents and retarders. Gypsum self-leveling mortar, bonded gypsum, caulking gypsum, and thermal insulation gypsum glue are all inseparable from adhesives.
▲ Redispersible latex powder
Redispersible latex powder is widely used in gypsum self-leveling mortar, gypsum insulation compound, gypsum caulking putty, etc. Especially in gypsum self-leveling mortar. It can make the slurry adhesive and fluidity good, and also play a great role in reducing delamination, avoiding bleeding, and improving crack resistance. The dosage is generally 1.2% to 2.5%.
▲ Instant polyvinyl alcohol
At present, the instant polyvinyl alcohol used in a large amount in the market is 24-88, 17-88 two types of products. It is often used in bonding gypsum, gypsum putty, gypsum composite thermal insulation compound, plastering gypsum and other products, and the dosage is generally 0.4% to 1.2%.
Guar gum, Tianqing gum, carboxymethyl cellulose, starch ether, etc. are all adhesives with different bonding functions in gypsum dry-mixed building materials.
Thickening is mainly to improve the workability and sagging of gypsum slurry. It is similar to adhesives and water retaining agents, but not completely. Some thickener products are effective in thickening, but not ideal in terms of cohesive force and water retention.
When preparing gypsum dry powder building materials, the main function of the admixture should be fully considered. In order to better and more rationally apply the admixture. Commonly used thickener products include polyacrylamide, Tianqing gum, guar gum, carboxymethyl cellulose, etc.
The cellulose ether products produced by Landcel have good bonding and thickening effects in gypsum mortar.
1.What admixtures are used for gypsum mortar?
2.What admixtures are used for gypsum mortar?(2)
3.What admixtures are used for gypsum mortar?(4)