NEWS -
CARBON AEROGEL
News Details
01
2024
-
07
Modifiers for aluminum sulfate paper fillers
Starch and its derivatives can improve the strength properties of the filled paper by enhancing the bond between fibers and fibers. By wrapping the filler with starch and its derivatives, starch and its derivatives can form hydrogen bonds with pulp fibers, and aluminum sulfate can alleviate the negative effects of the filler while retaining the filler's role.
Starch and its derivatives can improve the strength properties of the filled paper by enhancing the bond between fibers and fibers. By wrapping the filler with starch and its derivatives, starch and its derivatives can form hydrogen bonds with pulp fibers, and aluminum sulfate can alleviate the negative effects of the filler while retaining the filler's role.
Chitosan is generally produced by deacetylation of chitin. Chitosan molecules contain a large number of active groups (e.g., -NH2, -OH), which will form a sol-gel electrolyte solution with H+ in solution under acidic conditions, and generate a gel solution with OH- in solution under alkaline conditions, showing good flocculation and adsorption properties.
Gypsum whiskers were modified using chitosan, and it was found that the addition of modified gypsum whisker paper samples increased the filler retention rate compared with unmodified gypsum whisker-filled paper. Using carboxymethyl chitosan and aluminum sulfate on the paper-making filler talcum powder surface coating modification, the results found that when the carboxymethyl chitosan dosage of a certain amount of aluminum sulfate on the filler wrapping and performance of a greater relationship between the amount of aluminum sulfate when the amount of aluminum sulfate six percent, compared with the unmodified filler paper, the tensile index of the modified filler paper to improve, while whiteness and opacity are better.
Due to the high cost of chitosan, it is necessary to graft copolymerization with other substances to reduce the cost, Chen Youlun with cationic chitosan graft modified calcium carbonate. Wheat starch modified by silane coupling agent, and then co-mingled with calcium carbonate filler for paste dissolution, aluminum sulfate added cationic chitosan and other active ingredients grinding and drying treatment, so that the particle size of calcium carbonate filler particles increased.
Previous Page
Is iron-free aluminum sulfate toxic?
2024-07-01
Contact:Mr.Song 18601153337 Mail:290925704@qq.com
Address:D1 Workshop, No.9 Tianyuan Road, Saida Industrial Park, Xiqing Economic and Technological Development Zone, Tianjin
Copyright©2024 Tianjin NPCA New Materials Technology co., Ltd.