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A kind of one-component water-based feve coating resin and preparation method thereof

A coating resin and single-component technology, applied in the field of single-component water-based FEVE coating resin and its preparation, can solve the problems of inconvenient construction and no environmental protection, and achieve convenient construction, wide application range, and good resistance to electrolytes. The effect of stability

Active Publication Date: 2022-03-22
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current FEVE fluorocarbon coatings are all solvent-based and two-component construction, which is not environmentally friendly and brings inconvenience to construction

Method used

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  • A kind of one-component water-based feve coating resin and preparation method thereof
  • A kind of one-component water-based feve coating resin and preparation method thereof
  • A kind of one-component water-based feve coating resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The one-component waterborne FEVE coating resin of the present embodiment comprises by weight:

[0031]

[0032] The specific preparation steps of the single-component waterborne FEVE coating resin of the present invention are:

[0033] (1) At room temperature, add 10 parts of F68 polyether and 10 parts of PEG4000 polyether to a three-necked flask with a condenser tube-water separator, vacuum dehydrate at 120°C for 30 minutes, remove residual water, and obtain a reactant I.

[0034] (2) Cool down to 50°C, add 0.6 parts of succinic anhydride to the reactant I, slowly raise the temperature to 80°C, and keep the temperature for 1 hour to prepare the reactant II.

[0035] (3) Add 4 parts of E-51 epoxy resin to reactant II, raise the temperature to 120° C., and react for 3 hours to obtain reactant III.

[0036] (4) Add 5 parts of FEVE to the prepared reactant III, then add 15 parts of linolenic acid and 6 parts of xylene, heat up to 150°C, and keep warm for 30min. ℃, r...

Embodiment 2

[0047] The one-component waterborne FEVE coating resin of the present embodiment comprises by weight:

[0048]

[0049]

[0050] The specific preparation steps of the single-component waterborne FEVE coating resin of the present invention are:

[0051] (1) At room temperature, add 12 parts of F68 polyether and 13 parts of PEG4000 polyether to a three-necked flask with a condenser tube-water separator, vacuum dehydrate at 110°C for 60 minutes, remove residual water, and obtain a reactant I.

[0052] (2) Lower the temperature to 45°C, add 0.7 parts of succinic anhydride to the reactant I, slowly raise the temperature to 75°C, and keep the reaction for 1.2h to prepare the reactant II.

[0053] (3) Add 5.37 parts of E-51 epoxy resin to reactant II, raise the temperature to 125° C., and react for 2 hours to obtain reactant III.

[0054] (4) Add 6.8 parts of FEVE to the prepared reactant III, then add 20.39 parts of linolenic acid and 6 parts of xylene, heat up to 130°C, and...

Embodiment 3

[0065] The one-component waterborne FEVE coating resin of the present embodiment comprises by weight:

[0066]

[0067] The specific preparation steps of the single-component waterborne FEVE coating resin of the present invention are:

[0068] (1) At room temperature, add 14 parts of F68 polyether and 16 parts of PEG4000 polyether into a three-necked flask with a condenser tube-water separator, vacuum dehydrate at 150°C for 45 minutes, remove residual water, and obtain a reactant I.

[0069] (2) Lower the temperature to 65°C, add 0.8 parts of succinic anhydride to the reactant I, slowly raise the temperature to 90°C, and keep the reaction for 1.5h to prepare the reactant II.

[0070] (3) Add 7 parts of E-51 epoxy resin to reactant II, raise the temperature to 130° C., and react for 4 hours to obtain reactant III.

[0071] (4) Add 8 parts of FEVE to the prepared reactant III, then add 25 parts of linoleic acid and 8 parts of xylene, heat up to 160°C, and keep warm for 40mi...

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Abstract

The invention discloses a single-component water-based FEVE coating resin and a preparation method thereof, belonging to the technical field of FEVE fluorocarbon resins. The novel single-component water-based FEVE coating resin comprises: E-51 epoxy resin in parts by weight 4-7 parts, F68 polyether 10-14 parts, PEG4000 polyether 10-16 parts, succinic anhydride 0.6-0.8 parts, linoleic acid 15-25 parts, trimellitic anhydride 0.5-0.8 parts, FEVE fluorocarbon resin 5-8 parts , 6-8 parts of xylene, 8-14 parts of propylene glycol butyl ether and 0.8-1.5 parts of triethylamine; the single-component construction of the present invention improves the inconvenience of two-component construction of FEVE coating; Nonionic modification makes it have good resistance to electrolyte stability; the weather resistance of coating resin of the present invention is lower than pure FEVE resin, higher than other resins; coating resin of the present invention has excellent salt spray resistance ( The coating scraper was baked at 80°C for 30 minutes, and tested after curing for 7 days), and the salt spray resistance exceeded 14 days, which was higher than the performance of most non-FEVE coatings of the same water-based coating formulation.

Description

technical field [0001] The invention belongs to the technical field of FEVE fluorocarbon resins, and in particular relates to a single-component water-based FEVE coating resin and a preparation method thereof. Background technique [0002] FEVE resin coatings can be cured at room temperature or baked at medium and low temperatures. They are the leading products of fluorocarbon coatings in my country. However, because solvent-based FEVE coatings emit a large amount of VOC gases, these VOCs are emitted into the atmosphere and cause photochemical reactions to form low-altitude Ozone destroys the atmospheric environment, VOC and suspended particles form secondary aerosols, endangering human health, and because it is a two-component coating, it is necessary to use diisocyanate monomers as curing agents, which not only makes the steps of coating cumbersome, but also workers are exposed to these for a long time Harmful substances such as isocyanate and formaldehyde endanger the healt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/02C09D127/22C08G59/14C08F8/00C08F14/18
CPCC09D163/00C08G59/14C08F8/00C08L27/22C08F14/18
Inventor 卫晓利张发兴
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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