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Silicone modified waterborne epoxy curing agent and its preparation and application, waterborne epoxy high-performance bridge primer and its preparation

A water-based epoxy and silicone technology, applied in primers, epoxy resin coatings, coatings, etc., can solve the problems of insufficient comprehensive performance, slow curing speed, poor impact toughness, etc., to achieve convenient use, reduce surface energy, Hygroscopicity reduction effect

Active Publication Date: 2022-07-12
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to partially solve the technical problems of insufficient comprehensive performance of the above-mentioned water-based epoxy resin primer material such as slow curing speed, poor impact toughness, and poor water resistance, the present invention provides a silicone-modified water-based epoxy curing agent and its preparation method and application , water-based epoxy high-performance bridge primer and preparation method thereof, the specific technical scheme is as follows: a silicone-modified water-based epoxy curing agent, the silicone-modified water-based epoxy curing agent consists of A', B', C' The three segments are combined in the form of HA'B'A'C'A'B'A'H through sulfur-carbon bonds,

Method used

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  • Silicone modified waterborne epoxy curing agent and its preparation and application, waterborne epoxy high-performance bridge primer and its preparation
  • Silicone modified waterborne epoxy curing agent and its preparation and application, waterborne epoxy high-performance bridge primer and its preparation
  • Silicone modified waterborne epoxy curing agent and its preparation and application, waterborne epoxy high-performance bridge primer and its preparation

Examples

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Embodiment 1

[0046] A preparation method of a water-based epoxy high-performance bridge primer, comprising the following steps:

[0047] (1) preparation of component I: 100 parts of bisphenol A epoxy resins E51, 5 parts of epoxy thinner butyl glycidyl ether are mixed and stirred at room temperature to obtain I component;

[0048] (2) Preparation of component II: 320 parts of silicone-modified waterborne epoxy curing agent 1 and 6.4 parts of curing accelerator 2,4,6-tris(dimethylamino)phenol were mixed and stirred to obtain component II ;

[0049] (3) Preparation of water-based epoxy high-performance bridge primer: when in use, the component I obtained in step (1) and the component II obtained in step (2) are mixed in a mass ratio of 1:3.1, and then use 1200 r / min. After stirring for 4-5min with the high-speed disperser, add a certain amount of water and continue to stir with the 1200r / min high-speed disperser for 2-3min to obtain a water-based epoxy high-performance bridge primer that can...

Embodiment 2

[0051] A preparation method of a water-based epoxy high-performance bridge primer, comprising the following steps:

[0052] (1) preparation of component I: 100 parts of bisphenol A epoxy resins E51, 12 parts of epoxy diluent dodecyl glycidyl ether are mixed and stirred at room temperature to obtain I component;

[0053] (2) Preparation of component II: Mix 350 parts of silicone-modified water-based epoxy curing agent 2 with 11.5 parts of curing accelerator 2,4,6-tris(dimethylamino)phenol and stir to obtain component II ;

[0054] (3) Preparation of water-based epoxy high-performance bridge primer: when in use, the component I obtained in step (1) and the component II obtained in step (2) are mixed in a mass ratio of 1:3.2, and then use 1400 r / min. After stirring for 4-5min with the high-speed disperser, add a certain amount of water and continue to stir with the 1400r / min high-speed disperser for 2-3min to obtain a water-based epoxy high-performance bridge primer that can be ...

Embodiment 3

[0056] A preparation method of a water-based epoxy high-performance bridge primer, comprising the following steps:

[0057] (1) preparation of component I: 100 parts of bisphenol A epoxy resin E51, 25 parts of epoxy diluent ethylene glycol diglycidyl ether are mixed and stirred evenly under room temperature conditions to obtain I component;

[0058] (2) Preparation of component II: 365 parts of silicone-modified water-based epoxy curing agent 3 and 14.6 parts of curing accelerator 2,4,6-tris(dimethylamino)phenol were mixed and stirred to obtain component II ;

[0059] (3) Preparation of water-based epoxy high-performance bridge primer: when in use, the component I obtained in step (1) and the component II obtained in step (2) are mixed at a mass ratio of 1:3.0, and then use 900 r / min. After stirring for 5 minutes with the high-speed disperser, add a certain amount of water and continue to stir with the 900r / min high-speed disperser for 3 minutes to obtain a water-based epoxy ...

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Abstract

The invention discloses an organic silicon-modified water-based epoxy curing agent and its preparation and application, a water-based epoxy high-performance bridge primer and its preparation. It is obtained by reacting ethylene glycol diglycidyl ether and epoxy-terminated fluorine-containing organosilicon polymer blocks. The organosilicon-modified water-based epoxy curing agent can be used to prepare a water-based epoxy high-performance bridge primer; the present invention can be used for the concrete surface layer by introducing the organosilicon-modified water-based epoxy curing agent into the curing system of the water-based epoxy resin primer. The base surface is strengthened to improve the bonding performance between the coating and the base surface, especially for bridge protective coating systems.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an organosilicon-modified water-based epoxy curing agent and its preparation and application, a water-based epoxy high-performance bridge primer and its preparation. Background technique [0002] As an important part of the transportation system, bridges play a very important role. Epoxy resin materials are widely used in bridge engineering, construction, electronics, aerospace and other fields because of their good bonding properties, low shrinkage and excellent mechanical properties. The epoxy resin primers used in traditional bridge coating systems are almost all solvent-based, causing serious pollution to the environment, and the presence of solvents also poses greater safety hazards in transportation, construction, and storage. The water-based epoxy resin primer has attracted more and more attention because of its low VOC content, water dispersion medium, less od...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/66C09D163/02C09D5/00C09D7/20
CPCC08G59/66C09D163/00C09D5/002C09D7/20
Inventor 孙德文李波冉千平张小冬卢立群沈志明刘畅王中华侯平平亓帅朱剑南陈利麟
Owner JIANGSU SOBUTE NEW MATERIALS