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A platform for research: civil engineering, architecture and urbanism
Water-resistant re-dispersible latex powder
The invention relates to water-resistant re-dispersible latex powder, and belongs to the technical field of building materials. The water-resistant re-dispersible latex powder comprises, by mass, 75-85% of polymer modified latex, 5-11% of protective colloid, 10-16% of anti-caking agents and 0-5% of functional additives. A preparation method of the washable re-dispersible latex powder includes the steps that the protective colloid powder and water are heated inside a reaction kettle according to the proportion of 36:350 to form adhesive through blending; then the adhesive is mixed with the polymer modified latex, and the functional additives are added into the mixture to be stirred to form uniform latex; then the latex is conveyed into drying equipment and atomized through a high-speed centrifugal atomizer, part of anti-caking agents are added to prevent adhesion, and the water-resistant re-dispersible latex powder finished product is obtained through temperature decreasing and separating. By the adoption of the method, the water-resistant performance of the re-dispersible latex powder can be effectively improved, the requirements for high performance and environmental friendliness of building mortar are met, and application of the latex powder to dry powder building mortar and special waterproof materials is promoted.
Water-resistant re-dispersible latex powder
The invention relates to water-resistant re-dispersible latex powder, and belongs to the technical field of building materials. The water-resistant re-dispersible latex powder comprises, by mass, 75-85% of polymer modified latex, 5-11% of protective colloid, 10-16% of anti-caking agents and 0-5% of functional additives. A preparation method of the washable re-dispersible latex powder includes the steps that the protective colloid powder and water are heated inside a reaction kettle according to the proportion of 36:350 to form adhesive through blending; then the adhesive is mixed with the polymer modified latex, and the functional additives are added into the mixture to be stirred to form uniform latex; then the latex is conveyed into drying equipment and atomized through a high-speed centrifugal atomizer, part of anti-caking agents are added to prevent adhesion, and the water-resistant re-dispersible latex powder finished product is obtained through temperature decreasing and separating. By the adoption of the method, the water-resistant performance of the re-dispersible latex powder can be effectively improved, the requirements for high performance and environmental friendliness of building mortar are met, and application of the latex powder to dry powder building mortar and special waterproof materials is promoted.
Water-resistant re-dispersible latex powder
XU WENYING (author) / DONG HUIYAN (author) / LIANG HAIBO (author) / ZHANG YANFENG (author)
2015-11-25
Patent
Electronic Resource
English
IPC:
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
/
C04B
Kalk
,
LIME
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
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