Identification and detection method for nanometer titanium dioxide in paints

Abstract

The invention provides an identification and detection method for nanometer titanium dioxide in paints. According to the invention, qualitative and quantitative analysis of nanometer titanium dioxide in the paints is successfully carried out, and the technology of identification and detection of nanometer titanium dioxide in the paints is successfully realized through identification of the crystal structure and crystal microstructure characteristics of a nano-material and crystal morphology, particle size, distribution and the like of the nano-material by using powder X ray diffraction analysis (XRD), scanning electron microscope analysis (SEM) and spectral analysis. Meanwhile, the method of integrating sphere reflection is utilized to determine ultraviolet ray absorption of nanometer titanium dioxide in four paints, which provides reasonable evidence to the fact that nanometer titanium dioxide can be used as an additive for ultraviolet ray resisting or antibiosis paints.

Description

technical field [0001] The invention relates to the technical field of chemical substance detection, in particular to a detection method of nanometer titanium dioxide in paint. Background technique [0002] Due to the small size effect, surface effect, quantum size effect and macroscopic quantum tunneling effect, nanoparticles are different from conventional particles in terms of heat, magnetism, light, sensitivity and surface stability. Use the anti-ultraviolet, photocatalysis, anti-mildew, anti-bacterial, conductive and other properties of nanoparticles to modify traditional coatings, so that the coatings have some special functions such as: anti-aging, anti-bacterial, anti-fouling, conductive, stealth, etc. [0003] Nano-coatings are generally composed of nano-materials and organic coatings. Therefore, more scientifically, they should be called nanocomposite coatings. Only when two conditions are met can it be called a nano-coating: one is that the coating contains at le...

AI Technical Summary

Problems solved by technology

[0007] 1. The surface tension of nanomaterial particles is very large and easy to agglomerate;

[0008] 2. Nanomaterials are high-tech products, and how to characterize their application in coatings is a difficult problem;

[0009] 3. Nano materials have special properties different from other traditional materials, so the construction and storage methods of traditional coatings are not suitable for nano coatings;

[0010] 4. Nano-coatings lack relevant testing standards, such as the purity, particle size, particle size distribution, storage stability and other indicators and testing method standards of nano-pigments in coatings have not been perfected

[0011] It can be seen that the evaluation system of nano-coatings is still blank, because the lack of a standard evaluation system for nano-materials greatly limits the application of nano-coatings.

The current evaluation system only evaluates from the performance of coatings and coating films, and has not established an in-depth evaluation system, which seriously hinders the development of nano coatings.

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