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Waterproof coating containing polyether-modified silicon-acrylic soft resin and preparation method thereof

A silicon acrylic flexible, polyether modified technology, applied in the direction of coating, etc., can solve the problems of poor concrete binding force, increased construction cost, poor water resistance, etc., and achieve outstanding corrosion resistance, cost control, and flexibility Improved effect

Inactive Publication Date: 2011-08-10
武汉力诺投资控股集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One-component thermoplastic acrylate emulsion is often used as the base resin to prepare waterproof coatings on the market, but the coating has the following disadvantages: 1. The drying time is too long, which increases the construction cost; 2. The bonding force with concrete is poor, and the water resistance 3. Poor flexibility and easy to crack

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021]Add 800 parts of polyether glycol with a molecular weight of 200, 510 parts of acrylic acid, 0.8 parts of KOH catalyst, 0.7 parts of p-hydroxyanisole, and 12 parts of xylene into a mixing tank equipped with a thermometer, a condenser, and a water separator. In the four-necked reaction flask, heat up to 80-120°C, start stirring, keep warm when the temperature rises to reflux, and then slowly heat up to the measured acid value ≤ 5mgKOH / g, stop the reaction, vacuum out the reflux solvent xylene, The p-hydroxyanisole was distilled off under reduced pressure to obtain the polyether polymer emulsifier 1.

[0022] Mix 682 parts of deionized water with 32 parts of sodium lauryl sulfate and stir to dissolve, then slowly add 810 parts of butyl acrylate, 825 parts of n-propyl acrylate, 510 parts of methyl methacrylate, polyether 400 parts of polymer-like emulsifiers and 130 parts of acrylic acid for the core layer monomer mixed solution were pre-emulsified for 30 minutes to prepare...

Embodiment 2

[0025] Add 1,200 parts of polyether diol with a molecular weight of 400, 330 parts of acrylic acid, 1.2 parts of KOH catalyst, 0.8 parts of p-hydroxyanisole, and 14 parts of xylene into a mixing tank equipped with a thermometer, a condenser, and a water separator. In the four-necked reaction flask, heat up to 80-120°C, start stirring, keep warm when the temperature rises to reflux, and then slowly heat up to the measured acid value ≤ 5mgKOH / g, stop the reaction, vacuum out the reflux solvent xylene, Then the p-hydroxyanisole was distilled off under reduced pressure to obtain the polyether polymer emulsifier 2.

[0026] Mix 650 parts of deionized water with 30 parts of allyloxy hydroxypropyl sodium sulfonate and stir to dissolve, then slowly add 750 parts of butyl acrylate, 785 parts of phenyl methacrylate, methyl methacrylate 420 parts, 480 parts of polyether polymer emulsifier, 130 parts of methacrylic acid core layer monomer mixed solution, then pre-emulsified for 30 minutes...

Embodiment 3

[0029] Add 1500 parts of polyether diol with a molecular weight of 2000, 116 parts of methacrylic acid, 1 part of KOH catalyst, 1.2 parts of p-hydroxyanisole, and 15 parts of xylene into a In the stirred four-necked reaction flask, heat up to 80-120°C, start stirring, keep the temperature up to reflux, and keep the reaction, then slowly heat up to the measured acid value ≤ 5mgKOH / g, stop the reaction, vacuum out the reflux solvent two toluene, and then distilling off p-hydroxyanisole under reduced pressure to obtain the polyether polymer emulsifier 3.

[0030] Mix 700 parts of deionized water with 25 parts of sodium dodecyl diphenyl ether disulfonate and stir to dissolve, then slowly add 900 parts of butyl acrylate, 870 parts of lauryl methacrylate, methyl methacrylate 310 parts of esters, 400 parts of polyether polymer emulsifiers, and 150 parts of methacrylic acid in the core layer monomer mixed solution were pre-emulsified for 30 minutes to prepare core pre-emulsion 3 for s...

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PUM

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Abstract

The invention provides waterproof coating containing a polyether-modified silicon-acrylic soft resin and a preparation method thereof. The waterproof coating is prepared by mixing the following raw materials in percentage by mass: 30 to 70 percent of polyether-modified silicon-acrylic soft resin, 25 to 65 percent of pigment filler, 1 to 8 percent of aqueous aid and the balance of water; and the polyether-modified silicon-acrylic soft resin is prepared from 5 to 30 mass percent of polyether polymer emulsifier, 5 to 15 mass percent of vinyl siloxane, 30 to 70 mass percent of acrylate monomer and the balance of water. The waterproof coating has high comprehensive performance, high adhesive force, high water resistance and high corrosion resistance and has a very wide market prospect in an environment-friendly society and high practicality.

Description

technical field [0001] The invention belongs to the field of chemical materials, and specifically refers to a waterproof coating containing polyether-modified silicon-acrylic flexible resin and a preparation method thereof. Background technique [0002] Architectural waterproof coatings refer to a building material that is applied to buildings and structures to prevent moisture, leaks, and protect buildings from water penetration and erosion. From ancient times to the present, building waterproofing has played a very important role in construction engineering. Many buildings respond to roof leakage, wall water seepage, and ground running water when they are in use; some roofs and walls have peeling off of the paint layer due to long-term leakage, and even moldy and smelly, deteriorating the living environment; offices, workshops and other workplaces Long-term leakage will seriously damage office facilities, cause corrosion and mildew of precision instruments and machine too...

Claims

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Application Information

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IPC IPC(8): C09D151/08C09D7/12C09D5/00
Inventor 陈俊文风何国平习家军
Owner 武汉力诺投资控股集团有限公司
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