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Special silane paste protective agent for concrete and preparation method thereof

A technology of concrete and protective agent, which is applied in the field of special high-performance silane paste protective agent for concrete and its preparation. It can solve the problems of insufficient penetration capacity and construction performance of the concrete structure surface, long reaction time, high viscosity of the product, etc., and achieve air permeability Superior, reliable quality, excellent hydrophobic performance

Active Publication Date: 2010-06-23
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 has complicated process and long reaction time. The polymer material obtained through polymerization reaction has high viscosity, and the penetration ability and construction performance on the surface of concrete structure are insufficient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] At room temperature of 10°C, first add 2 grams of sodium lauryl sulfate emulsifier to 90 grams of deionized water, stir at a speed of 1500 rpm to obtain a water phase; then add 80 grams of isobutyltriethoxysilane coupling agent , 90 grams of dodecyltrimethoxysilane, 6 grams of SPAN-80 emulsifier, 2 grams of OP-10 emulsifier, 15 grams of polymethyltriethoxysiloxane oligomer, 10 grams of white oil and 5 Mix 1 gram of petroleum ether, and stir at 1500rpm to obtain an oil phase; finally, at 1500rpm, drop the 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 Until it becomes a viscous paste, the product of the present invention can be obtained.

Embodiment 2

[0027] At room temperature at 15°C, first add 3 grams of sodium dodecylbenzenesulfonate emulsifier and 2 grams of OP-10 emulsifier into 85 grams of deionized water, and stir at a speed of 1500 rpm to obtain a water phase; then add 100 grams of normal Octyltriethoxysilane coupling agent, 70 grams of hexadecyltrimethoxysilane, 3 grams of SPAN-80 emulsifier, 2 grams of OP-10 emulsifier, 15 grams of polymethyltriethoxysiloxane Oligomers, 10 grams of n-hexane and 10 grams of petroleum ether were mixed, and stirred at a speed of 1500 rpm to obtain an oil phase; finally, at a speed of 1500 rpm, the oil phase was dripped into the water phase while stirring, and after the addition of the oil phase was completed, the Continue stirring at 2500rpm until the material in the reactor turns into a viscous paste, then the product of the present invention can be obtained.

Embodiment 3

[0029] At room temperature at 15°C, first add 2 grams of sodium lauryl sulfate emulsifier to 75 grams of deionized water, stir at a speed of 1500 rpm to obtain a water phase; then add 80 grams of isobutyltriethoxysilane coupling agent , 90 grams of dodecyltrimethoxysilane, 6 grams of SPAN-80 emulsifier, 2 grams of OP-10 emulsifier, 25 grams of methyl hydrogen silicone oil, 15 grams of cyclohexane and 5 grams of xylene mixed at 1800rpm Stir at a rotating speed to obtain an oil phase; finally, at a rotating speed of 1800rpm, 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 , the product of the present invention can be obtained.

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Abstract

The invention discloses a special silane paste protective agent for concrete and a preparation method thereof. The silane paste protective agent is prepared by taking long-chain-alkyl silane coupling agent with the length of the carbon chain between 4-16, siloxane oligomer with the viscosity between 10 and 2, 000mm2 / S, organic solvent, emulsifier and deionized water as raw materials, the preparation temperature is 1-40 DEG C, the mixing speed is 1, 500rpm-2, 000rpm, the deionized water and 2%-80% of the emulsifier are uniformly mixed to obtain aqueous phase, then the silane coupling agent, the residual emulsifier, the siloxane oligomer and the organic solvent are uniformly mixed to obtain oil phase, and finally the oil phase is dropped in the aqueous phase while mixing for continuous mixing under 2, 500rpm after completion of the oil phase dropping till the material in a reactor turns to viscous paste. The product of the invention has advanced technology, economy and reasonableness, safety and durability, reliable quality and convenient construction, can obviously improve the durability of the concrete structure and can be widely applied in protecting various concrete structures.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a special high-performance silane paste protective agent for concrete and a preparation method thereof. Background technique [0002] Concrete structure is the most widely used structural form in the world's capital construction, and my country is carrying out the world's largest engineering construction. The so-called structural durability is the ability of the structure and its components to maintain their required functions for a long time under the action of the environment. The durability of concrete structures is related to the long-term use benefits and project life of the project. Whether the safety and durability of concrete projects can be good It is related to the benefit of huge investment and the safety of people's life and property. [0003] Corrosion of steel bars in concrete structures due to concrete carbonation, chloride ion corrosion, an...

Claims

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Application Information

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IPC IPC(8): C04B24/42C04B41/49C04B103/60
Inventor 李建中戴建才施苏萍王一明岳立方剑慧
Owner ZHANGJIAGANG GUOTAI HUARONG NEW CHEM MATERIALS CO LTD
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