High-permeability, high-weather-resistance and environment-friendly silicon-fluorine protecting liquid and preparation method thereof

A silicon fluoride emulsion, an environmentally friendly technology, applied in coatings, biocide-containing paints, antifouling/underwater coatings, etc., can solve the problem that the protective layer cannot achieve the surface antifouling effect, the surface antifouling ability is reduced, and the surface is hydrophobic Performance degradation and other problems, to achieve excellent high and low temperature resistance, good stain resistance, and avoid pollution effects

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-permeability, high-weather-resistance and environment-friendly silicon-fluorine protecting liquid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In this embodiment, a high-permeability, high-weather-resistance and environment-friendly silicon fluoride emulsion, the steps are as follows:

[0041] (1) Preparation of silane emulsion

[0042] Weigh 30g of isobutyltrimethoxysilane and 0.6g of composite silicone emulsifier (0.3g each of OP10 and NP10), pour it into a container, heat it in a water bath to 25°C, stir at a speed of 1000r / min for 30min, and prepare A liquid ;

[0043] Weigh 0.4g of composite silicone emulsifier (0.2g each of OP10 and NP10) into 19g of deionized water, and stir at 25°C for 30min at a speed of 1000r / min to prepare liquid B;

[0044]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;

[0045] (2) Preparation of Fluoroalkylsiloxane Emulsion

[0046] Weigh 10 g of tridecafluorooctyltrimethoxysilane and 0.25 g of perfluoro...

Embodiment 2

[0051] In this embodiment, a high-permeability, high-weather-resistance and environment-friendly silicon fluoride emulsion, the steps are as follows:

[0052] (1) Preparation of silane emulsion

[0053] Weigh 40g of isobutyltriethoxysilane, 2g of composite silicone emulsifier (1g each of sodium dodecylsulfonate and span20), pour into a container, heat to 35°C in a water bath, and stir for 40min at a speed of 1500r / min , to prepare liquid A;

[0054] Weigh 1 g of composite silicone emulsifier (0.5 g each of sodium lauryl sulfonate and span20) into 22 g of deionized water, stir at 30 °C for 35 min at a speed of 2000 r / min to prepare liquid B;

[0055] Then, under the stirring state of 3000r / min, slowly drop the above-mentioned liquid A into the liquid B at the speed of 0.1-0.3mL / s; Stirring at 35°C for 60min at a stirring speed of 1000r / min to prepare a silane emulsion;

[0056] (2) Preparation of Fluoroalkylsiloxane Emulsion

[0057] Weigh 13g of tridecafluorooctyltriethoxy...

Embodiment 3

[0062] In this embodiment, a high-permeability, high-weather-resistance and environment-friendly silicon fluoride emulsion, the steps are as follows:

[0063] (1) Preparation of silane emulsion

[0064] Weigh 50g of octyltriethoxysilane and 1g of composite silicone emulsifier (each 0.5g of Pingpingjia 15 and AEO9), pour it into a container, heat it in a water bath to 45°C, and stir at a speed of 1500r / min for 90min to prepare A liquid;

[0065] Weigh 0.5g of composite silicone emulsifier (0.25g each of Pingpingjia 15 and AEO9) into 14g of deionized water, and stir at 35°C at a speed of 2000r / min for 70min to obtain liquid B;

[0066] 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 60°C for 60min at a stirring speed of 1500r / min to prepare a silane emulsion;

[0067] (2) Preparation of Fluoroalkylsiloxane Emulsion

[0068] Weigh 15g of pentafluorononyltrimethoxysilane and 1g of ...

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Abstract

The invention discloses high-permeability, high-weather-resistance and environment-friendly silicon-fluorine protecting liquid and a preparation method thereof. The high-permeability, high-weather-resistance and environment-friendly silicon-fluorine protecting liquid comprises 30-50wt% of small-molecule silane, 10-20wt% of fluoroalkyl siloxane, 0.5-3wt% of fluorosilane modified titanium dioxide, 1-3wt% of compound organic silicon emulsifier, 0.5-1.5wt% of fluorine-containing surfactant, 3-5wt% of silica sol and the balance deionized water. The high-permeability, high-weather-resistance and environment-friendly silicon-fluorine protecting liquid and the preparation method thereof have the advantages that the high-permeability, high-weather-resistance and environment-friendly silicon-fluorine protecting liquid is good and lasting in water resisting, oil resisting and fouling resisting function and excellent in permeability and weather resistance, and the appearance and breathability of the surface 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-permeability, high-weather-resistance and environment-friendly silicon-fluorine protecting liquid 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 high-permeability, high-weather-resistance, environment-friendly 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 f...

Claims

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Application Information

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IPC IPC(8): C09D183/08C09D5/16C09D5/14C09D7/61C09D7/62
CPCC08K3/36C08K9/06C08K2003/2241C08K2201/011C09D5/14C09D5/1675C09D183/08
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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