A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Gypsum powder toughening agent and preparation method thereof
The invention discloses a gypsum powder flexibilizer and a preparation method thereof, the gypsum powder flexibilizer mainly comprises polyvinyl alcohol, polyvinyl alcohol grafted polyacrylate, polyurethane, polyamide, silica and other components, the components are proportioned according to a certain weight ratio, the average molecular weight of the polyvinyl alcohol and the polyurethane is 10000-30000, the average molecular weight of the polyamide is 10000-3000, and the average molecular weight of the silica is 10000-10000. The grafting rate of the polyvinyl alcohol grafted polyacrylate is 5-20%, the polyamide is a polymer with the polymerization degree of 10-100, and the average particle size of the silicon dioxide is 0.1-1 micron. The gypsum powder flexibilizer provided by the invention can significantly improve the strength and toughness of a gypsum product, has no pollution to the environment, is simple and feasible in preparation method, and has a very good application prospect.
本发明公开了一种石膏粉的增韧剂及其制备方法，主要包括聚乙烯醇、聚乙烯醇接枝聚丙烯酸酯、聚氨酯、聚酰胺和二氧化硅等组分，按照一定的重量比例进行配比，其中聚乙烯醇和聚氨酯的平均分子量为10000‑30000，聚乙烯醇接枝聚丙烯酸酯的接枝率为5％‑20％，聚酰胺为聚合度为10‑100的聚合物，二氧化硅的平均粒径为0.1‑1微米。本发明的石膏粉增韧剂可以显著提高石膏制品的强度和韧性，同时对环境无污染，制备方法简单易行，具有很好的应用前景。
Gypsum powder toughening agent and preparation method thereof
The invention discloses a gypsum powder flexibilizer and a preparation method thereof, the gypsum powder flexibilizer mainly comprises polyvinyl alcohol, polyvinyl alcohol grafted polyacrylate, polyurethane, polyamide, silica and other components, the components are proportioned according to a certain weight ratio, the average molecular weight of the polyvinyl alcohol and the polyurethane is 10000-30000, the average molecular weight of the polyamide is 10000-3000, and the average molecular weight of the silica is 10000-10000. The grafting rate of the polyvinyl alcohol grafted polyacrylate is 5-20%, the polyamide is a polymer with the polymerization degree of 10-100, and the average particle size of the silicon dioxide is 0.1-1 micron. The gypsum powder flexibilizer provided by the invention can significantly improve the strength and toughness of a gypsum product, has no pollution to the environment, is simple and feasible in preparation method, and has a very good application prospect.
本发明公开了一种石膏粉的增韧剂及其制备方法，主要包括聚乙烯醇、聚乙烯醇接枝聚丙烯酸酯、聚氨酯、聚酰胺和二氧化硅等组分，按照一定的重量比例进行配比，其中聚乙烯醇和聚氨酯的平均分子量为10000‑30000，聚乙烯醇接枝聚丙烯酸酯的接枝率为5％‑20％，聚酰胺为聚合度为10‑100的聚合物，二氧化硅的平均粒径为0.1‑1微米。本发明的石膏粉增韧剂可以显著提高石膏制品的强度和韧性，同时对环境无污染，制备方法简单易行，具有很好的应用前景。
Gypsum powder toughening agent and preparation method thereof
一种石膏粉的增韧剂及其制备方法
LYU HAOMING (author) / YAN GUANJUN (author) / ZHU JING (author)
2024-03-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Phosphogypsum-based bonding gypsum powder, preparation method thereof and gypsum
| European Patent Office | 2023