Carboxylation modified nano titanium dioxide ultraviolet screening agent and preparation method thereof
A technology of nano-titanium dioxide and ultraviolet shielding agent, which is applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of affecting the reactivity of nano-TiO, consuming acrylic acid, etc., to improve the ultraviolet shielding performance and reduce agglomeration , The effect of enhancing light absorption
Pending Publication Date: 2021-09-24
SHAANXI UNIV OF SCI & TECH
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Abstract
The invention discloses a carboxylation modified nano titanium dioxide ultraviolet screening agent and a preparation method thereof, and belongs to the field of photocatalysts and preparation thereof. According to the preparation method, TiO2-NH2 is used as a main monomer, an aldehyde substance is used as a cross-linking agent, acrylic acid is used as a carboxylation modifier, and surface modification is performed on TiO2-NH2 through Mannich reaction to prepare the carboxylation modified nano titanium dioxide ultraviolet screening agent. The preparation method solves the problems of low reaction activity and non-ideal ultraviolet shielding performance caused by easy agglomeration during use of the existing nano titanium dioxide ultraviolet shielding agent, and terminal carboxyl groups are introduced to the surface of aminated modified nano titanium dioxide through Mannich reaction; finally, the nano titanium dioxide ultraviolet screening agent with good dispersibility, chemical reactivity and excellent ultraviolet screening performance is obtained.
Application Domain
Other chemical processesTitanium dioxide
Technology Topic
CarboxylationSurface modification +10
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