Application of carbon dots in the preparation of anti-ultraviolet products

Abstract

The invention discloses application of carbon dots in preparing an anti-ultraviolet product. The anti-ultraviolet product can be fiber, cosmetics, coating, printing ink or resin. The anti-ultraviolet product prepared from the carbon dots is remarkable in UVA (Ultraviolet A) and UVB (Ultraviolet B) absorption effect and low in production cost, and the obtained product has the advantages of safety (no toxicity), stability (difficulty in decomposition) and the like.

Description

technical field [0001] The invention relates to a new application of carbon dots, specifically, the application of carbon dots as a UV absorber in the preparation of anti-ultraviolet products. Background technique [0002] UV (ultraviolet light) is a kind of light wave that humans cannot see. Its wavelength range is between 200nm and 400nm. The wavelength is between 280 and 320nm), these UV radiations cause the deterioration of industrial products, such as the hardening and cracking of plastic materials, the hardening and brittleness of rubber, the discoloration of paint, etc., and cause non-negligible damage to human skin, so The development of UV absorbers with wide UV absorption spectrum and good stability has become a common requirement of industrial development and daily life. [0003] Traditional UV absorbers mainly include salicylates, benzophenones, benzotriazoles, substituted acrylonitriles, triazines and hindered amines, trichromatic phosphors, phosphors for LEDs,...

AI Technical Summary

Problems solved by technology

However, there are many defects in traditional UV absorbers: 1. Most of them are high-molecular organic materials. Toxic raw materials are often used in the synthesis process, such as benzene, etc. It is inevitable that there will be toxic raw materials or toxic intermediate products added to the final product. As a product that exists in people's daily life and is often in contact with, such as cosmetics, synthetic fibers, etc., it directly or indirectly endangers people's health and safety; 2. Most of the traditional UV absorbers are single UV absorbers. The range of ultraviolet light wave is also relatively simple, either mainly absorbing UVA or mainly absorbing UVB, only a variety of mixed use can achieve the effect of absorbing UVA and UVB at the same time, and the manufacturing process of compound UV absorbers is complicated; 3. Traditional UV Absorbents are expensive, and the average market price is 50-80 yuan / kg, which accounts for a large proportion of the cost of additives in industrial products; 4. It affects the transparency of products and limits the scope of use of UV absorbers; 5. Compatibility Poor performance, limited range of application to other materials

Because some studies have shown that in some carriers, such as synthetic rubber, directly adding carbon dots has no UV absorption effect, mainly as follows: the carrier is incompatible with carbon dots, thus limiting the application range of carbon dots

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