Trihydroxymethyl aminomethane: a multifunctional additive in the field of coatings

In the field of chemical materials, trihydroxymethylaminomethane, as an important organic compound, is gradually demonstrating its unique value in the coatings industry. This article will explore in detail the characteristics of trihydroxymethylaminomethane, its application in acrylic resin coatings, and the significant effects it brings.

Basic characteristics of trihydroxymethylaminomethane

Trihydroxymethylaminomethane, with the chemical formula (CH ₂ OH) ∝ CNH ₂, is a white crystalline powder that is easily soluble in water and has excellent buffering properties and stability. These characteristics make it widely used in various fields such as biochemistry, cosmetics, and industrial coatings. In the field of coatings, trihydroxymethyl aminomethane is mainly used as a leveling agent, which can significantly improve the surface performance of coatings.

Application in Acrylic Resin Coatings

According to a publicly disclosed patent, the acrylic resin coating is composed of various raw materials, including 100 parts of acrylic resin, 40-80 parts of rutile titanium dioxide, and 0.2-2 parts of 2- (2 '- hydroxy-3', 5 '- di-tert-butylphenyl) -5-chlorobenzotriazole, in a weight ratio. The amount of trihydroxymethylaminomethane used is 1-2 parts. This coating uses acrylic resin as the base material and rutile titanium dioxide as the pigment filler, aiming to improve the weather resistance of the coating. And trihydroxymethylaminomethane plays a crucial role as a key leveling agent.

Improve the surface performance of coatings

Trimethylaminomethane, as a leveling agent, can effectively reduce the surface tension of coatings, allowing them to spread more evenly during the coating process. After coating application, it can make the coating surface smoother and smoother, reducing defects such as orange peel and shrinkage caused by uneven surface tension. This is of great significance for improving the decorative effect and appearance quality of coatings. In some high-end automotive coatings and building exterior wall coatings, the requirement for surface smoothness of the coating is extremely high, and the application of trihydroxymethyl aminomethane can well meet these needs.

Improve the thixotropy of coatings

Gas phase silica endows coatings with thixotropy, while the combination of trihydroxymethyl aminomethane can further improve the suspension stability, thixotropy, and weather resistance of coatings. The thixotropy of coatings refers to the characteristic that the viscosity of coatings decreases when subjected to shear force, and then recovers after the shear force disappears. Good thixotropy enables the coating to maintain uniformity and stability during storage, without precipitation or delamination; During construction, it can be easily coated on the surface of objects and quickly restore viscosity after coating, preventing the coating from flowing and ensuring uniform coating thickness.

Eliminate pinhole defects in the coating film

In the coating formula, there are also components such as 2-hydroxy-2-phenylacetophenone, and trihydroxymethylaminomethane works synergistically with these components to eliminate defects that form pinholes in the coating film. Pinholes are a common defect in coatings, which can affect the protective performance and aesthetics of the coating. Trihydroxymethyl aminomethane improves the leveling and drying process of coatings, allowing the coating to better fill small gaps and avoid pinholes during the formation process.

Trihydroxymethyl aminomethane plays an irreplaceable role in acrylic resin coatings due to its unique properties. It not only enhances the surface performance and stability of the coating, but also works synergistically with other components to provide comprehensive performance guarantees for the coating. Hubei Xindesheng Material Technology Co., Ltd. specializes in the production of bio buffering agents such as trihydroxymethylaminomethane. If you need them, please feel free to contact me!