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Oil-repellent, water-repellent and air-permeable fluorine-containing silane protective paste and preparation method thereof

A fluorine-containing silane, oil-repellent and water-repellent technology, which is applied in the field of oil-repellent, water-repellent and breathable fluorine-containing silane protective paste and its preparation, can solve the problems of insufficient penetration capacity and construction performance of the concrete structure surface, long reaction time, and high product viscosity and other problems, to achieve excellent oil and water repellent effect, protective effect and long life, high chemical resistance and stability

Active Publication Date: 2011-12-07
ZHANGJIAGANG GUOTAI HUARONG NEW CHEM MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This preparation method is complicated in process and long in reaction time. The polymer material obtained through the polymerization reaction has a high viscosity, and there are obvious deficiencies in the penetration ability and construction performance of the concrete structure surface.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] At a room temperature of 25°C, first add 2 grams of sodium lauryl sulfate emulsifier to 90 grams of deionized water, and stir at a speed of 1500 rpm to obtain an aqueous phase; then couple 40 grams of trifluoropropyltrimethoxysilane to agent, 80 grams of isobutyl triethoxysilane coupling agent, 50 grams of dodecyl trimethoxysilane, 5 grams of MOA-9, 3 grams of Pingpingjia O-5, 15 grams of methyl hydrogen silicone oil oligomerization Mixture, 10 grams of xylene and 5 grams of petroleum ether, and stir at 1500rpm to obtain an oil phase; finally, at 1500rpm, drop the above-mentioned oil phase into the water phase while stirring. Continue to stir until the material in the reactor turns into a viscous paste, and then the product of the present invention can be obtained.

Embodiment 2

[0032] At room temperature at 5°C, first add 4 grams of sodium dodecylbenzenesulfonate emulsifier to 80 grams of deionized water, and stir at a speed of 1500 rpm to obtain an aqueous phase; then add 50 grams of trifluoropropyltriethoxysilane Coupling agent, 60 grams of n-octyltriethoxysilane coupling agent, 55 grams of hexadecyltrimethoxysilane, 4 grams of SPAN-80 emulsifier, 2 grams of Pingpingjia O-3 emulsifier, 25 grams of formazan Hydrogen-containing silicone oil, 15 grams of petroleum ether and 5 grams of xylene were mixed, and stirred at a speed of 1800 rpm to obtain an oil phase; finally, at a speed of 1800 rpm, the above oil phase was dropped into the water phase while stirring, and after the oil phase was added dropwise Continue stirring at 2500rpm until the material in the reactor becomes a viscous paste, the product of the present invention can be obtained.

Embodiment 3

[0034]At room temperature at 22°C, first add 3 grams of sodium lauryl sulfate emulsifier into 50 grams of deionized water, stir at 1500 rpm to obtain a water phase; then couple 80 grams of isooctyltriethoxysilane agent, 20 grams of trifluoropropyltriethoxysilane coupling agent, 30 grams of trifluoropropylmethyldiethoxysilane coupling agent, 10 grams of SPAN-60, 7 grams of MOA-15 ​​emulsifier, 15 grams Polymethyltriethoxysiloxane oligomer, 30 grams of methyl-terminated polydimethylsiloxane oligomer, 15 grams of n-octane and 40 grams of petroleum ether are mixed, and stirred evenly at 1500 rpm to obtain Oil phase; finally, at a rotating speed of 1500rpm, drop the above oil phase into the water phase while stirring, and continue stirring at 2500rpm after the oil phase is added until the material in the reactor becomes a viscous paste, which can be obtained Product of the present invention.

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Abstract

The invention discloses an oil-repellent, water-repellent, and air-permeable fluorine-containing silane protective cream and a preparation method thereof. The fluorine-containing silane protective cream uses a fluorine-containing silane coupling agent and a long-chain alkyl silane with a carbon chain length between 4 and 16. Coupling agent, siloxane oligomer with a viscosity between 10-2000mm2 / S, organic solvent, emulsifier and deionized water are used as raw materials; the temperature is 1°C-40°C, and the stirring speed is 1500rpm-2000rpm. Stir deionized water and 2% to 80% emulsifier evenly to obtain a water phase, then add fluorine-containing silane coupling agent, long-chain alkyl silane coupling agent, remaining emulsifier, siloxane oligomer, organic solvent Stir evenly to obtain an oil phase, and finally drop the oil phase into the water phase while stirring, and continue stirring at 2500 rpm after the oil phase is added until the material in the reactor becomes a viscous paste. The product of the invention has advanced technology, can significantly improve the durability and service life of concrete structures, and is suitable for the protection of various important concrete infrastructures.

Description

technical field [0001] The invention belongs to special protective coating materials, and in particular relates to an oil-repellent, water-repellent and air-permeable fluorine-containing silane protective paste and a preparation method thereof. Background technique [0002] The global construction industry consumes 40% of the world's total resources, and the value of infrastructure in the United States accounts for 70% of its total social wealth. my country's infrastructure construction accounts for a larger proportion of the national economy. Judging from the current development trend, this trend is still Will keep for a long time. A large number of damage examples at home and abroad show that the concrete structure is not destroyed due to insufficient design strength, but prematurely destroyed due to insufficient concrete durability, which has caused an astonishing amount of maintenance and reconstruction funds and waste of resources. At present, the whole society is advoc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/49
CPCC04B2111/27C04B41/009C04B26/32C04B41/4961C04B2103/40
Inventor 戴建才李建中施苏萍王一明岳立方剑慧
Owner ZHANGJIAGANG GUOTAI HUARONG NEW CHEM MATERIALS CO LTD
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