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Organic-inorganic composite coating material with self-cleaning function

A technology of inorganic composite and coating materials, applied in the direction of coating, etc., can solve the problems of no self-cleaning function, easy cracking and falling off, high coating hardness, etc., achieve good photocatalytic performance, avoid cracking and falling off, and clean the appearance effect

Active Publication Date: 2018-07-20
FIRST NEW MATERIAL TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The organic-inorganic composite coating material in the prior art is mainly prepared by reacting the silane coupling agent containing epoxy with silica sol, but the coating hardness of this organic-inorganic composite coating material is lower than High, poor toughness, easy to crack and fall off, and does not have self-cleaning function, easy to be polluted for long-term use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An organic-inorganic composite coating material with self-cleaning function is prepared by the following steps:

[0021] Step a1, mixing 30 g of silica sol with a solid content of 25% and 10 g of nano-titanium dioxide sol with a solid content of 1%, and stirring evenly to obtain a mixture A.

[0022] Step b1, the molecular formula of 80g is (CH 3 O) 3 -Si-CH 2 -CH 2 -Si-(CH 3 O) 3 The Bola-type silane coupling agent was added to water to obtain mixture B.

[0023] Step c1, heating mixture A to 50°C, and adding mixture B to mixture A under stirring, and then adding 10g of titanium dioxide, 3g of color paste, 0.1g of wetting agent, and 0.1g of defoamer, thereby The organic-inorganic composite coating material with self-cleaning function is obtained.

[0024] Specifically, use the organic-inorganic composite coating material with self-cleaning function prepared in Example 1 of the present invention to coat paint films of 50 microns, 150 microns and 300 microns respe...

Embodiment 2

[0026] An organic-inorganic composite coating material with self-cleaning function is prepared by the following steps:

[0027] Step a2, mixing 30 g of silica sol with a solid content of 25% and 5 g of nano-titanium dioxide sol with a solid content of 1%, and stirring evenly to obtain a mixture A.

[0028] Step b2, the molecular formula of 80g is (CH 3 O) 3 -Si-(CH 2 ) 6 -Si-(CH 3 O) 3 The Bola-type silane coupling agent was added to water to obtain mixture B.

[0029] Step c2, heating mixture A to 50°C, and adding mixture B to mixture A under stirring, and then adding 10g of titanium dioxide, 3g of color paste, 0.1g of wetting agent, and 0.1g of defoamer, thereby The organic-inorganic composite coating material with self-cleaning function is obtained.

[0030] Specifically, the organic-inorganic composite coating material with self-cleaning function prepared in Example 2 of the present invention was used to coat paint films of 50 microns, 150 microns and 300 microns re...

Embodiment 3

[0032] An organic-inorganic composite coating material with self-cleaning function is prepared by the following steps:

[0033] Step a3, mixing 30 g of silica sol with a solid content of 25% and 10 g of nano-titanium dioxide sol with a solid content of 1%, and stirring evenly to obtain a mixture A.

[0034] Step b3, the molecular formula of 100g is (CH 3 O) 3 -Si-(CH 2 ) 3 -S 4 -(CH 2 ) 3 -Si-(CH 3 O) 3 The Bola-type silane coupling agent was added to water to obtain mixture B.

[0035] Step c3, heating mixture A to 50°C, and adding mixture B to mixture A under stirring, and then adding 11g of titanium dioxide, 3g of color paste, 0.1g of wetting agent, and 0.1g of defoamer, thereby The organic-inorganic composite coating material with self-cleaning function is obtained.

[0036] Specifically, the organic-inorganic composite coating material with self-cleaning function prepared in Example 3 of the present invention was used to coat paint films of 50 microns, 150 micro...

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Abstract

The invention discloses an organic-inorganic composite coating material with a self-cleaning function. The organic-inorganic composite coating material is prepared through the following steps that nanometer titania sol, silica sol and Bola type silane coupling agents react; then, pigment and auxiliary agents are added, so that the organic-inorganic composite coating material with the self-cleaningfunction is prepared, wherein the mass ratio of the silica sol to the Bola type silane coupling agents is (0.2 to 0.5):1; the consumption of the nanometer titania sol is 3 to 10 percent of the totalmass of the silica sol and the Bola type silane coupling agents. A formed coating has high tenacity; cracking and falling cannot easily occur; good self-cleaning capability is realized; the clean appearance can be maintained in the long-time use process.

Description

technical field [0001] The invention relates to the field of architectural coatings, in particular to an organic-inorganic composite coating material with self-cleaning function. Background technique [0002] The organic-inorganic composite coating material is a new type of coating material prepared by combining organic materials and inorganic materials. It has both the excellent weather resistance of inorganic material coatings and the flexibility of organic material coatings, and can achieve complementary performance, thus Improve the overall performance of the coating, so it has broad application prospects in architectural coatings, anti-corrosion coatings and other fields. [0003] The organic-inorganic composite coating material in the prior art is mainly prepared by reacting the silane coupling agent containing epoxy with silica sol, but the coating hardness of this organic-inorganic composite coating material is lower than High, poor toughness, easy to crack and fall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/63
CPCC09D1/00
Inventor 刘东华张仁哲房晓梅施文虎
Owner FIRST NEW MATERIAL TECH DEV
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