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High-weather-proof and anti-icing polysiloxane material for concrete and preparation method of high-weather-proof and anti-icing polysiloxane material

A polysiloxane, anti-icing technology, applied in chemical instruments and methods, other chemical processes, coatings, etc., can solve the problems of poor moisture curing controllability, unstable hydrophobic performance, poor hydrophobic performance, etc. Achieve excellent high weather resistance and anti-icing ability, improve the performance of anti-corrosion and anti-icing, and reduce the effect of concrete surface energy

Active Publication Date: 2015-04-29
JIANGSU SOBUTE NEW MATERIALS +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing anti-icing coatings still have problems such as poor hydrophobicity and poor durability.
[0006] Patent CN103492486A discloses a moisture curable composition and a low surface energy coating composition prepared therefrom, using a polymer based on silane-terminated polyurethane; however, the composition has poor moisture curing controllability, polyurethane and The compatibility and stability of polysiloxane is poor, and the phase separation process in the curing process is not easy to control, resulting in unstable hydrophobic properties
[0007] Patent CN102757708A discloses a kind of anti-ice and snow coating and its preparation method, the polyacrylic acid grafted PDMS copolymer containing POSS realizes anti-ice and snow ability, and it has good compatibility and adhesion; However, its contact angle is small, only There are about 105°, and the hydrophobic performance is limited
[0008] Patent CN101792631A discloses a highly hydrophobic and static-conductive anti-icing coating and its preparation method. A low-surface-energy anti-icing coating with static-conducting properties is prepared by using fluorocarbon resin, conductive powder, and organosilicon compound, mainly using fluorinated acrylic acid The low surface energy of the resin is used to achieve the anti-icing effect, and it is used for the surface protection of electric wires; however, its low temperature resistance and low temperature flexibility are poor, and the durability of fluorinated acrylic resin is poor, which cannot meet the requirements of long-term protection of concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]1) Preparation of amino-modified polyether polysiloxane: In a 1000mL three-necked bottle equipped with a stirrer, reflux condenser, and thermometer, add 75g of hydrogen-containing silicone oil, 3g of allyl glycidyl ether, and 220g of allyl glycidyl ether in sequence. Based on polyoxyethylene polyoxypropylene ether, stirred with N2 for 10min, heated to 90°C, added dropwise platinum catalyst to react for 4h, and obtained polyether / epoxy silicone oil intermediate. Then drop into ethylenediamine at a ratio of 1.05: 1.00 to the epoxy group molar ratio of amine and polyether / epoxy silicone oil intermediate to continue the reaction for 4h. The weight ratio is 8: 2) and the mixed solvent is washed to remove impurities to obtain a viscous liquid.

[0033] 2) Preparation of epoxy-modified polysiloxane: Weigh 60g of hydrogenated bisphenol A epoxy resin and 40g of polymethylphenylsiloxane respectively in eggplant-shaped bottles, and rotatively evaporate at 80°C for 30min. Remove a ...

Embodiment 2

[0037] 1) Preparation of amino-modified polyether polysiloxane: In a 1000mL three-necked bottle equipped with a stirrer, a reflux condenser, and a thermometer, add 85g of hydrogen-containing silicone oil, 3.5g of allyl glycidyl ether, and 240g of alkene Propyl polyoxyethylene polyoxypropylene ether, stirred with N2 for 10 minutes, heated up to 90°C, added dropwise a platinum catalyst to react for 4 hours, and obtained a polyether / epoxy silicone oil intermediate. Then drop into ethylenediamine at a ratio of 1.05: 1.00 to the epoxy group molar ratio of amine and polyether / epoxy silicone oil intermediate to continue the reaction for 4h. The weight ratio is 9: 1) and the mixed solvent is washed to remove impurities to obtain a viscous liquid.

[0038] 2) Preparation of epoxy-modified polysiloxane: Weigh 60g of hydrogenated bisphenol A epoxy resin and 40g of polymethylphenylsiloxane respectively in eggplant-shaped bottles, and rotatively evaporate at 80°C for 30min. Remove a small...

Embodiment 3

[0042] 1) Preparation of amino-modified polyether polysiloxane: In a 1000mL three-necked bottle equipped with a stirrer, reflux condenser, and thermometer, add 100g of hydrogen-containing silicone oil, 4g of allyl glycidyl ether, and 225g of allyl glycidyl ether in sequence. Based on polyoxyethylene polyoxypropylene ether, stirred with N2 for 10min, heated to 90°C, added dropwise platinum catalyst to react for 4h, and obtained polyether / epoxy silicone oil intermediate. Then drop into ethylenediamine at a ratio of 1.05: 1.00 to the epoxy group molar ratio of amine and polyether / epoxy silicone oil intermediate to continue the reaction for 4h. The mixed solvent with a weight ratio of 9:1 was washed to remove impurities to obtain a viscous liquid.

[0043] 2) Preparation of epoxy-modified polysiloxane: Weigh 60g of hydrogenated bisphenol A epoxy resin and 40g of polymethylphenylsiloxane respectively in eggplant-shaped bottles, and rotatively evaporate at 80°C for 30min. Remove a ...

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Abstract

The invention provides a high-weather-proof and anti-icing polysiloxane material for concrete. The high-weather-proof and anti-icing polysiloxane material comprises the following components in parts by weight: 20-70 parts of amino-modified polyether polysiloxane, 10-30 parts of epoxy-modified polysiloxane, 10-20 parts of poly(methylphenylsilsesquioxane), 5-10 parts of poly(propylmethylsilsesquioxane) and 5-10 parts of alkoxy silane. The polysiloxane material can be used for effectively reducing the surface energy of the concrete and improving the surface hydrophobicity as well as anti-corrosion and anti-icing performances of the concrete, has excellent anti-corrosion and anti-icing capacities and can be applied to the protection of the concrete under the water work, maritime work and low-temperature climates.

Description

technical field [0001] The invention belongs to the technical field of concrete protection, and in particular relates to a polysiloxane material with high weather resistance and anti-ice coating for concrete and a preparation method thereof, which can be used for high weather resistance and anti-icing protection of concrete and improve the service life of concrete. Background technique [0002] As we all know, concrete will inevitably face the erosion of the external environment during its service, especially with the progress of infrastructure construction in our country, the service environment of concrete is becoming more and more severe. For example, persistently degraded air (SO 2 , CO 2 ), high humidity and inorganic salts in coastal areas, and saline-alkali conditions in western areas, etc., all greatly accelerated the deterioration process of concrete and seriously affected the service life of concrete. How to prolong the service life of concrete structures under h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/12C09D183/06C09D183/04C09K3/18C04B41/49
Inventor 王洪松李磊王伟王瑞蒋永菁田倩刘加平
Owner JIANGSU SOBUTE NEW MATERIALS
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