Polyether amine modified waterborne epoxy floor hardener and preparation method thereof

A technology of epoxy flooring and polyether amine, which is applied in the field of building materials, can solve the problems of hardness, adhesion and impact resistance that are difficult to meet the application requirements at the same time, lack of universal applicability, poor water dispersibility, etc., and achieve environmental protection Excellent performance, good water dispersibility, good effect of water dispersibility

Inactive Publication Date: 2014-12-24
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, there are the following technical problems in the prior art: in the current preparation method of water-based curing agent, the preparation process is complicated, the reaction control is difficult, it is easy to gel, the water dispersibility is not good, lack of universal applicability, and the hardness, adhesion and impact resistance are difficult to meet the application requirements at the same time

Method used

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  • Polyether amine modified waterborne epoxy floor hardener and preparation method thereof
  • Polyether amine modified waterborne epoxy floor hardener and preparation method thereof
  • Polyether amine modified waterborne epoxy floor hardener and preparation method thereof

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preparation example Construction

[0039] Among them, R 1 It is a straight chain with 8 to 13 carbon atoms or a straight chain with 8 to 13 atoms formed by combining one or more of oxygen atoms, sulfur atoms and nitrogen atoms with carbon atoms; R 2It is more than one of phenyl, alkoxy and alkyl; it also provides a method for preparing a curing agent for polyether amine modified water-based epoxy floors, using polyether amine and epoxy-terminated glycidyl ether First react, and then react with epoxy resin to prepare polyetheramine modified water-based epoxy floor curing agent, the reaction equation is as follows: Among them, the molar ratio of polyetheramine, epoxy-terminated glycidyl ether and epoxy resin is 2~6:0.5~4.5:0.5~4.5; during the reaction, firstly add polyetheramine into the reactor, and then add terminal ring Oxygen glycidyl ether reacts, after the reaction is complete, add epoxy resin, and finally add deionized water to disperse to obtain a polyether amine modified water-based epoxy floor curing ...

Embodiment 1

[0045] Example 1: Preparation of Polyetheramine Modified Waterborne Epoxy Floor Curing Agent 1

[0046] Add 138g of analytical grade polyetheramine D-400 and a small amount of KH550 into a 500ml four-necked flask equipped with a stirrer, a condenser, a nitrogen conduit and a constant pressure dropping funnel. Stir with nitrogen gas and heat up to a certain temperature (about 70°C). At this temperature, slowly add 60.4g of trimethylolpropane triglycidyl ether dropwise with a constant pressure dropping funnel, and react for 2 hours to obtain a three-branched chain terminal amino group. Then, the temperature was raised to 100° C. to carry out vacuum distillation for 1 hour to distill off excess polyamines. In the second step, 37.4 g of E51 from Shanghai Resin Factory was added dropwise to the four-necked flask after the first step of reaction was completed. React at 80°C for 4 hours to obtain an epoxy-amine addition product, add 101 g of deionized water and disperse at high spe...

Embodiment 2

[0049] Example 2: Preparation of curing agent 2 for polyetheramine modified waterborne epoxy floor

[0050] Add 161g of industrial grade polyetheramine D-403 and a small amount of KH550 into a 500ml four-neck flask equipped with a stirrer, a condenser, a nitrogen conduit and a constant pressure dropping funnel. Stir with nitrogen gas and heat up to a certain temperature (about 80°C). At this temperature, slowly add 44 g of polyethylene glycol diglycidyl ether dropwise with a constant pressure dropping funnel, and react for 3.5 hours to obtain two branched chain terminal amino groups. Then, the temperature was raised to 110° C. to conduct vacuum distillation for 1.5 hours to distill off excess polyamines. In the second step, 37.4 g of E44 was added dropwise to the four-necked flask after the first step of the reaction. React at 90°C for 4.5 hours to obtain an epoxy-amine addition product, add 104 g of deionized water and disperse at high speed for 20 minutes to prepare a polye...

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Abstract

The invention relates to a polyether amine modified waterborne epoxy floor hardener and a preparation method thereof. The polyether amine modified waterborne epoxy floor hardener is prepared through modification of polyether amine, synthesis of epoxy-amine and dispersion of deionized water; the molar ration of the polyether amine, epoxy-terminated glycidyl ether and epoxy resin is 2-6:0.5-4.5:0.5-4.5; during reaction, the polyether amine is firstly added into a reactor, then the epoxy-terminated glycidyl ether is added, the epoxy resin is added in drops, and lastly, the reactants are dispersed through the deionized water to obtain the polyether amine modified waterborne epoxy floor hardener. The preparation method of the polyether amine modified waterborne epoxy floor hardener is simple in process; the reaction temperature is easy to control; waterborne epoxy floor paints produced with the polyether amine modified waterborne epoxy floor hardener are high in hardness and glossiness, reach level-1 impact resistance and obtain high acid and alkali resistance.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a curing agent for polyetheramine-modified water-based epoxy floors and a preparation method thereof. Background technique [0002] Epoxy resins generally refer to polymer oligomers containing two or more epoxy groups, with alicyclic or aromatic organic compounds as the backbone and capable of forming useful thermosetting products through the reaction of epoxy groups. It is a substance that varies from liquid to viscous and solid. There is almost no independent use value. Only the insoluble and infusible polymer that reacts with the curing agent to form a three-dimensional network structure has application value. It can be seen that the curing agent plays a considerable role in the application of epoxy resin and the performance of the cured product. effect. At present, the water-based epoxy curing agent is supported by the national industrial policy for its non-vol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/64C08G65/00C09D163/00
Inventor 陶庭先李林晶方兴龙周梁吴之传张承东武春
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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