Coating material modifier, modified epoxy resin as well as preparation method and application of modified epoxy resin

A technology of epoxy resin and modifier, which is applied in the field of paint modifiers. It can solve the problems of long surface drying and hard drying time, low initial viscosity, and high system viscosity, so as to shorten the surface drying and hard drying time and shorten the construction period. , The effect of saving manpower and material resources

Active Publication Date: 2018-03-20
辽宁苏博特船牌制漆有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent 201010130165.2 A room temperature curing epoxy waterproof adhesive for bridge decks discloses a waterproof adhesive with strong cohesive force, but its system viscosity is high, and its penetration into concrete is limited, so it can only infiltrate the concrete surface However, the penetration effect on the concrete capillary cannot be achieved, and the concrete cannot be consolidated at a deeper level.
A two-component high-permeability epoxy waterproof reinforcing coating with low initial viscosity is disclosed, but it still has surface drying and hard drying time too long, and cannot achieve fast surface drying to meet the needs of rapid construction, and the patent does not give Permeability-related data that is particularly important for the effect of concrete penetration reinforcement

Method used

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  • Coating material modifier, modified epoxy resin as well as preparation method and application of modified epoxy resin
  • Coating material modifier, modified epoxy resin as well as preparation method and application of modified epoxy resin
  • Coating material modifier, modified epoxy resin as well as preparation method and application of modified epoxy resin

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0080] Polymer HS-Polymer1 of Polythiol Functional Monomer

[0081] Add 100g pentaerythritol mercaptopropionate to the reactor equipped with condenser, thermometer and stirrer, then add 50g xylene, 3g DMP30, heat up to 40°C and stir evenly, then 30gE51 is dissolved in 15g xylene, and Add dropwise to the xylene solution of pentaerythritol mercaptopropionate, stir while adding, keep the reaction temperature at 45°C, react for 2 hours after the dropwise addition is completed until the viscosity of the system no longer increases, raise the temperature to 90°C, remove the xylene solvent in a vacuum, After the removal is completed, it is lowered to room temperature for use. The code is HS-Polymer1, the theoretical active hydrogen equivalent is 208.0g / eq, and the measured viscosity is 6860mPa·s (23°C).

Synthetic example 2

[0083] Polymer HS-Polymer2 of Polythiol Functional Monomer

[0084] Add 100g pentaerythritol mercaptopropionate to the reactor equipped with condenser, thermometer and stirrer, then add 40g xylene, 1g DBU, heat up to 40°C and stir evenly, then 20gF51 is dissolved in 8g xylene, and Add dropwise to the xylene solution of pentaerythritol mercaptopropionate, stir while adding, keep the reaction temperature at 40°C, react for 2 hours after the dropwise addition is completed until the viscosity of the system no longer increases, raise the temperature to 80°C, remove the xylene solvent in vacuum, After the removal is completed, it is lowered to room temperature for use. The code name is HS-Polymer2, the theoretical active hydrogen equivalent is 177.5g / eq, and the measured viscosity is 5178mPa·s (23°C).

Synthetic example 3

[0086] Polymer HS-Polymer3 of Polythiol Functional Monomer

[0087] Add 100g of pentaerythritol mercaptopropionate into the reactor equipped with condenser, thermometer and stirrer, then add 30g of xylene, 1.5g of DBU, heat up to 40°C and stir evenly, then add 20g of hexanediol diglycidyl ether, using Dissolve 6g of xylene, add it dropwise to the xylene solution of pentaerythritol mercaptopropionate, stir while adding, keep the reaction temperature at 35°C, and react for 2h after the addition is completed until the viscosity of the system no longer increases, then raise the temperature to 90°C , the xylene solvent was removed in vacuum, and after the removal was completed, it was cooled to room temperature for use. The code name was HS-Polymer3, the theoretical active hydrogen equivalent: 186.9g / eq, and the measured viscosity was 5385mPa·s (23°C).

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Abstract

The invention provides a coating material modifier, a modified epoxy resin of the coating material modifier, and a preparation method and application of the modified epoxy resin. The coating materialmodifier is characterized by using multiple mercapto functional group monomers and / or polymers thereof to shorten the surface drying time and the hard drying time of a coating material; the multiple mercapto functional group monomers refer to tetra-functional pentaerythritol mercaptopropionate. The modified epoxy resin provided by the invention can be used as a waterproof coating material and canbe quickly cured, high permeability is obtained, the permeability to a surface layer of concrete is good, the curing speed is fast, and dual functions of permeability resistance and reinforcement areobtained.

Description

technical field [0001] The invention belongs to the technical field of waterproof coatings, and in particular relates to a coating modifier, a modified epoxy resin and a preparation method and application thereof. Background technique [0002] In concrete buildings such as bridges, tunnels, dams and other buildings, most of them have more or less steel materials such as steel bars or steel plates to increase the overall strength and safety of the building. During the service period of concrete buildings, substances such as water, carbon dioxide, and sulfur dioxide in the atmosphere can penetrate into the interior through porous concrete, causing corrosion of the steel inside the building, weakening the bearing capacity of the steel, and even affecting the structural safety of the building. In addition, the exposed concrete on the surface of the building is exposed to the atmosphere for a long time and is eroded by acid gas for a long time, which usually easily causes the alk...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/66C08G59/50C08G59/22C09D163/00C09D7/65
CPCC08G59/22C08G59/5026C08G59/66C08L2205/025C09D163/00C08L63/00
Inventor 李波冉千平孙德文刘玉亭尹浩刘娜万赟周进俊
Owner 辽宁苏博特船牌制漆有限公司
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