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Titanium dioxide prepolymer and preparation method thereof as well as photocatalyst ultraviolet light curing paint with same

A technology of titanium dioxide and prepolymer, which is applied in the field of photocatalyst UV curing paint, can solve the problems of poor scratch resistance, poor storage stability of titanium dioxide, and poor dirt resistance of UV curing paint, and achieve uniform dispersion and dirt resistance good staining ability

Active Publication Date: 2013-04-24
HUNAN SOKAN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of titanium dioxide prepolymer, its preparation method and the photocatalyst ultraviolet light curing paint with it, to solve the problem of poor storage stability of titanium dioxide, poor dirt resistance and scratch resistance of ultraviolet light curing paint in the prior art Poor technical issues

Method used

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  • Titanium dioxide prepolymer and preparation method thereof as well as photocatalyst ultraviolet light curing paint with same
  • Titanium dioxide prepolymer and preparation method thereof as well as photocatalyst ultraviolet light curing paint with same

Examples

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Effect test

preparation example Construction

[0023] One aspect of the present invention provides a kind of preparation method of titanium dioxide prepolymer, comprises the following steps:

[0024] (1) Carboxylation reaction of n-butyl titanate in ethanol to obtain carboxylated titanium dioxide;

[0025] (2) After dissolving polyurethane acrylic resin in an organic solvent, carry out a hybrid reaction with carboxylated titanium dioxide to obtain a titanium dioxide prepolymer.

[0026] The present invention aims at the problems of poor storage stability and easy migration of titanium dioxide in the existing preparation of titanium dioxide photocatalyst coatings. Titanium dioxide is prepared into titanium dioxide prepolymer, and titanium dioxide is grafted into polyurethane acrylic resin through condensation and hybridization reactions. Since polyurethane acrylic resin can be combined with The other components in the UV curable paint are well mixed. The titanium dioxide and polyurethane acrylic resin are prepared into a pr...

Embodiment

[0038] When the paint surface provided by the present invention is cured, the required curing energy is 1200-2000mJ / cm 2 , specifically provided by a UV lamp.

[0039] The monofunctional acrylate monomer used in Examples 4-8 is isobornyl acrylate, and the high-functional acrylate monomer is dipentaerythritol hexaacrylate. The model of the monofunctional acrylate monomer is EM70; the model of the high-functional acrylate monomer is EM266, both of which were purchased from Taiwan Changxing Chemical.

[0040] The auxiliary agent is polyether-modified polydimethylsiloxane, purchased from BYK Chemical Company in Germany, with the brand name BYK-333.

[0041] High-functional aliphatic polyurethane acrylic resin was purchased from EBECYRL 1290 of Cytec Corporation of the United States and 6195-100 of Taiwan Changxing Chemical.

[0042]The model of α-hydroxycyclohexyl benzophenone in the photoinitiator is Irgacure 184 purchased from Ciba Company in Switzerland, and the model of 2,4,...

Embodiment 4～8

[0044] Preparation method of photocatalyst ultraviolet light curing paint in embodiment 4~8:

[0045] a) preheating the acrylic group-containing resin in the UV-curable paint of Examples 4-8 at 40-50°C for 1-2 hours, and dissolving it with 2 / 3 volume of diluent to obtain the first solution;

[0046] b) Add the acrylic monomers and photoinitiators in the UV-curable paints of Examples 4-8 to the first solution, and stir at 500-600 r / min at 40-50°C for 20-30 minutes to obtain the second solution ;

[0047] c) Add the additives in the UV-curable paints of Examples 4-8 and the remaining 1 / 3 volume of diluent to the second solution, stir at 900-1200r / min for 10-20min, and use a 400-mesh filter cloth Filter to obtain a UV-curable primer.

[0048] Coating and curing method in Examples 4 to 8: Spray the photocatalyst UV curable paint prepared in Examples 4 to 8 on the substrate, the coating film thickness is 20 μm, infrared leveling: 65°C / 8min, curing energy: 1500mJ / cm 2 .

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Abstract

The invention provides a titanium dioxide prepolymer and a preparation method of the titanium dioxide prepolymer and a photocatalyst ultraviolet light curing paint containing the titanium dioxide prepolymer. The method of preparing the titanium dioxide prepolymer comprises the following steps of: carrying out carboxylation reaction on titanium tetrabutoxide in ethanol to obtain carboxylated titanium dioxide; and dissolving a polyurethane acrylic resin in an organic solvent, and then heating and reacting the polyurethane acrylic resin with carboxylated titanium dioxide for 24 hours at 80 DEG C to obtain the titanium dioxide prepolymer. The photocatalyst ultraviolet light curing paint prepared by the invention comprises the titanium dioxide prepolymer, a high-function acrylic monomer, a single-function acrylic monomer, a diluent, an initiator and an assistant. The technical scheme provided by the invention solves the technical problems of poor storage stability of titanium dioxide, and bad dirty resistance and poor scratch resistance ability of the photocatalyst ultraviolet light curing paint in the prior art.

Description

technical field [0001] The present invention relates to the field of coating, in particular, to a titanium dioxide prepolymer and a preparation method thereof, in particular, to a photocatalyst ultraviolet-curable paint comprising the aforementioned titanium dioxide prepolymer. Background technique [0002] In order to protect the plastic shell of the product from being scratched and affecting the appearance, in the prior art, UV-curable coatings are often applied on the surface of objects, such as CN101570653 and CN101701129. However, the plastic casing of the product is often covered with a layer of grease and dust, and it is difficult to wipe and clean, which again affects the appearance of the product. [0003] In the prior art, the photocatalysis of titanium dioxide itself is often used to degrade the grease layer or make it easy to scrub, and it also has the advantages of sterilization and deodorization, high hardness, and high wear resistance. However, the preparatio...

Claims

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Application Information

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IPC IPC(8): C08G18/83C09D175/14
Inventor 陈俊芳缪培凯
Owner HUNAN SOKAN NEW MATERIAL
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