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Silicon dioxide coating additive with ultraviolet absorption function and preparation method of silicon dioxide coating additive

A technology of silica and additives, which is applied in the field of coating additives, can solve the problems of restricting the application of coatings, and achieve the effects of good ultraviolet absorption characteristics, high grafting success rate, and good oil solubility

Pending Publication Date: 2021-10-19
GUANGDONG TANZI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, although the reported carbon quantum dots have good UV absorption properties, most of the carbon quantum dots are water-soluble, which limits their application in coatings.

Method used

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  • Silicon dioxide coating additive with ultraviolet absorption function and preparation method of silicon dioxide coating additive
  • Silicon dioxide coating additive with ultraviolet absorption function and preparation method of silicon dioxide coating additive
  • Silicon dioxide coating additive with ultraviolet absorption function and preparation method of silicon dioxide coating additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] As a carbonaceous raw material with glucose, glucose and ethylenediamine, orthosilicate as a raw material for preparing silica-carbon quantum dot composites, and the silica-carbon according to the following examples are prepared according to the following steps. Quantum dot composite:

[0025] Step 1, glucose 1 mmol, each amount is given an ethylenediamine, and 1 mmol of orthosilicate, and the raw material is added to 100% ethanol, and mixed, dissolved, dissolved, dissolved to form a uniform reaction solution;

[0026] Step 2, the resulting reaction solution is refluxed for 5 hours at 80 ° C;

[0027] Step three, centrifuge, filtrate, the collected precipitate is a semi-finished product of a silica-carbon quantum dot composite, which includes a silica body 1 and a carbon quantum point 2 embedded in the silica main body 1, specifically like figure 1 As shown, the semi-finished product is sufficiently washed, dried;

[0028] Step 4, the semi-finished product obtained by step ...

Embodiment 2

[0034] The experimental group is arranged, and glucose and ethylenediamine are used, ethyl orthosilicate is used as a raw material, and the silica-carbon quantum dot composite material is prepared according to the following steps:

[0035] Step 1, glucose 1 mmol, each amount is given an ethylenediamine, and 1 mmol of orthosilicate, and the raw material is added to 100% ethanol, and mixed, dissolved, dissolved, dissolved to form a uniform reaction solution;

[0036] Step 2, the resulting reaction liquid is refluxed in 80 ° C for 5 hours, and the structure is formed in the reaction liquid. figure 1 The semi-finished product of the silica-carbon quantum dot composite, the semi-finished image observed under the scanning electron microscope, such asimage 3 Indicated.

[0037] The control group is arranged, and glucose and ethylenediamine are used as a raw material, and the carbon quantum dots are prepared according to the following steps:

[0038] Step 1, glucose 1 mmol, quantified 1 m...

Embodiment 3

[0044] 1, process group building mode

[0045] In this example, a method of preparing a silica-carbon quantum dot composite material provided in Example 1, as a silane coupling agent in step four in step four, as step six by dimethine The organic amine in which different nano metal particles is used as a raw material, and a silica-carbon quantum dot composite is prepared. According to the species of the nano metal particles employed, each treatment group is numbered, in particular: Treatment I, the nano metal particles employed are nano silver particles; treatment II, the nano metal particles employed are nano gold particles; treatment III The nano metal particles employed are nanoplasmic particles; treatment IV, the nano metal particles employed are nanopoly particles. Different experiments are adjusted by finite experiments in accordance with the type of nano metal particles employed to obtain a specific raw material feed ratio when the carbon quantum dot transceration rate is u...

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Abstract

The invention provides a silicon dioxide coating additive with an ultraviolet absorption function. The silicon dioxide coating additive comprises a silicon dioxide-carbon quantum dot composite material, wherein the silicon dioxide-carbon quantum dot composite material comprises a main silicon dioxide body and carbon quantum dots embedded in the main silicon dioxide body, and the surface of silicon dioxide is grafted with a conjugate as shown in a general formula I which is described in the specification. In the formula I, the general formula of R1 is as described in the specification, wherein the tail end of Y is conjugated with R3 used for being conjugated with M, R3 is an amino or sulfydryl group, and M represents a nanometer metal particle; and R2 comprises at least one R4 conjugated with M and a long carbon chain, wherein R4 is an amino or sulfydryl group, and the main chain of the long carbon chain comprises at least 8 C atoms. The main silicon dioxide body and the carbon quantum dots are utilized to form a composite material, and actually, the main silicon dioxide body is utilized to provide a steering modification interface for the carbon quantum dots, so the carbon quantum dots have a good dispersion characteristic in an oil-soluble coating.

Description

Technical field [0001] The present invention belongs to the technical field of coating additives, and in particular, to a silica coating additive having ultraviolet absorption and a preparation method thereof. Background technique [0002] In recent years, environmental pollution has severe damage to the Earth's ozone layer, so that the ultraviolet intensity of the surface of the surface is increasing, which causes many changes in nature, such as powdering, cracking, and even falling off. [0003] The reason for these phenomena is that in the sun, there are ultraviolet rays in addition to visible light and infrared rays. The shorter the ultraviolet wavelength, the stronger the energy, the larger the harmfulness of people, and the chemical bonds of C-H, C-C, C-CL in the organic can create destructive effects, long-term ultraviolet rays. The irradiation will make the coating aging, deteriorate, and loses anti-corrosion. In general, the main reason for the aging of coatings is the u...

Claims

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Application Information

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IPC IPC(8): C09D5/32
CPCC09D5/32
Inventor 刘应亮胡广齐叶炜浩
Owner GUANGDONG TANZI TECH CO LTD
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