High-fouling-resistance silicon-fluorine emulsion and preparation method thereof

A silicon fluoride emulsion and antifouling technology, applied in the field of high antifouling silicon fluoride emulsion and its preparation, can solve the problems that the protective layer cannot achieve the surface antifouling effect, the surface hydrophobicity is reduced, the surface antifouling ability is reduced, and the like, Achieve excellent UV resistance, improve coating performance, and improve aging resistance.

Active Publication Date: 2018-05-18
广州乾程化工科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the formed protective layer still cannot achieve a durable surface antifouling effect. This is because under long-term outdoor sunlight, the molecular chain segments of the surface protective layer will still be destroyed by ultraviolet rays, which makes the surface hydrophobic performance decrease and the surface antifouling ability In addition, most of the surface protection systems in the prior art use organic solvents, which will bring defects and hazards such as odor, toxicity, volatility, inflammability and explosion

Method used

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  • High-fouling-resistance silicon-fluorine emulsion and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of a kind of high antifouling silicon fluorine emulsion of the present embodiment, its steps are as follows:

[0035] (1) Preparation of silane emulsion

[0036] Weigh 30g of isobutyltriethoxysilane, 1g of γ-methacryloxypropyltrimethoxysilane, 0.6g of compound emulsifier (0.3g each of OP10 and NP10), pour into a container and heat in a water bath to 25 °C, stirred at a speed of 1000r / min for 30min to prepare liquid A;

[0037] Weigh 0.4g of composite emulsifier (0.2g each of OP10 and NP10) into 30g of deionized water, stir at 25°C for 30min at a speed of 1000r / min to prepare B liquid;

[0038] Then, under the stirring state of 1000r / min, slowly drop the above-mentioned liquid A into the liquid B at the speed of 0.1-0.3mL / s; Stirring at 25°C for 30min at a stirring speed of 1000r / min to prepare a silane emulsion;

[0039] (2) Mix the above-mentioned silane emulsion with 5g of fluororesin emulsion, stir at 25°C and 1000r / min for 30min; keep the a...

Embodiment 2

[0041] The preparation method of a kind of high antifouling silicon fluorine emulsion of the present embodiment, its steps are as follows:

[0042] (1) Preparation of silane emulsion

[0043]Weigh 35g of octyltriethoxysilane, 2g of γ-aminopropyltriethoxysilane, 1g of compound emulsifier (0.5g each of sodium dodecylsulfonate and span20), pour into a container and heat in a water bath to 35 °C, stirred at a speed of 1500r / min for 40min to prepare liquid A;

[0044] Weigh 0.5g of composite emulsifier (0.25g each of sodium laurylsulfonate and span20) into 28g of deionized water, and stir at 35°C for 35min at a speed of 1500r / min to prepare liquid B;

[0045] Then, under the stirring state of 1500r / min, slowly drop the above-mentioned liquid A into the liquid B at a speed of 0.1-0.3mL / s; Stirring at 35°C for 30min at a stirring speed of 1500r / min to prepare a silane emulsion;

[0046] (2) Mix the above silane emulsion with 7g of fluororesin emulsion, stir at 30°C and 1300r / min f...

Embodiment 3

[0048] The preparation method of a kind of high antifouling silicon fluorine emulsion of the present embodiment, its steps are as follows:

[0049] (1) Preparation of silane emulsion

[0050] Weigh 40g of isobutyltrimethoxysilane, 3g of vinyltriethoxysilane, 1g of compound emulsifier (Pingpingjia 15 and AEO9 each 0.5g), pour it into a container and heat it to 60°C in a water bath, at 2000r / min Stir at a high speed for 40 minutes to prepare liquid A;

[0051] Weigh 1g of compound emulsifier (0.5g each of Pingpingjia 15 and AEO9) into 25g of deionized water, and stir at 40°C for 30min at a speed of 2200r / min to prepare liquid B;

[0052] Then, under the stirring state of 1200r / min, slowly drop the above-mentioned liquid A into the liquid B at the speed of 0.1-0.3mL / s; Stirring for 40min at 35°C and a stirring speed of 1300r / min to prepare a silane emulsion;

[0053] (2) Mix the above silane emulsion with 6.5g of fluororesin emulsion, stir at 45°C and 1800r / min for 90min; keep...

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Abstract

The invention discloses a high-fouling-resistance silicon-fluorine emulsion and a preparation method thereof. The high-fouling-resistance silicon-fluorine emulsion comprises 30-50wt% of small-moleculesilane, 5-15wt% of fluorine resin emulsion, 0.5-3wt% of fluorosilane modified titanium dioxide, 1-3wt% of compound emulsifier, 0.5-2wt% of light stabilizer, 1-3wt% of silane coupling agent, 3-5wt% ofsilica sol and the balance deionized water. The high-fouling-resistance silicon-fluorine emulsion and the preparation method thereof have the advantages that the high-fouling-resistance silicon-fluorine emulsion is good and lasting in water resisting, oil resisting and fouling resisting function, good in permeability and excellent in weather resistance, and the appearance and breathability of thesurface of a base material cannot be changed; in addition, the preparation method is simple in process, safe, environmentally friendly and free of odor, and the prepared the high-fouling-resistance silicon-fluorine emulsion is widely applicable to the water resisting and fouling resisting of base materials such as concrete, stone and GRC.

Description

technical field [0001] The invention relates to the technical field of substrate surface protection, in particular to a highly antifouling silicon-fluorine emulsion and a preparation method thereof. Background technique [0002] Concrete, stone, GRC, etc. are all porous materials, and there are various capillaries, pores, etc. inside, especially the surface is generally rough, and dust, pollutants, and automobile exhaust in the atmosphere will settle on the surface of the substrate. With the help of water, the pollutants will enter the interior of the substrate along the capillaries, pores, etc., and leave stains on the surface. Like this, not only has affected appearance, and also is difficult to remove, especially for the fair-faced concrete or GRC component that is used for decoration, the antifouling of the surface is especially important. [0003] The most effective method of surface protection is to prevent the substrate from contacting with water and other harmful su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/07C09D183/08C09D183/06C09D5/16C09D7/61C09D7/62
CPCC08K2003/2241C08L2205/02C08L2205/025C09D5/1675C09D5/1687C09D183/04C09D183/06C09D183/08C08L83/08C08K9/06C08K3/22C08K3/36
Inventor 黄剑文李彬诚
Owner 广州乾程化工科技发展有限公司
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