Novel single-component water-based FEVE coating resin and preparation method thereof

A coating resin, one-component technology, applied in the field of new single-component water-based FEVE coating resin and its preparation, can solve the problems of no environmental protection, inconvenient construction, etc. Effects of Electrolyte Stability

Active Publication Date: 2021-03-26
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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  • Novel single-component water-based FEVE coating resin and preparation method thereof
  • Novel single-component water-based FEVE coating resin and preparation method thereof
  • Novel single-component water-based FEVE coating resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0031]

[0032] The specific preparation steps of the novel 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 f...

Embodiment 2

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

[0048]

[0049]

[0050] The specific preparation steps of the novel 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 linoleic acid and 6 parts of xylene, heat up...

Embodiment 3

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

[0066]

[0067] The specific preparation steps of the novel 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 to 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 ...

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Abstract

The invention discloses novel single-component water-based FEVE coating resin and a preparation method thereof, belonging to the technical field of FEVE fluorocarbon resin. The novel single-componentwater-based FEVE coating resin comprises the following components in parts by weight: 4-7 parts of E-51 epoxy resin, 10-14 parts of F68 polyether, 10-16 parts of PEG4000 polyether, 0.6-0.8 part of succinic anhydride, 15-25 parts of linoleic acid, 0.5-0.8 part of trimellitic anhydride, 5-8 parts of FEVE fluorocarbon resin, 6-8 parts of xylene, 8-14 parts of propylene glycol butyl ether and 0.8-1.5parts of triethylamine. According to the invention, single-component construction is adopted, so the trouble that double-component construction of an FEVE coating is inconvenient is solved; through nonionic modification of polyether, good electrolyte-resistant stability is achieved; the weather resistance of the coating resin is lower than the weather resistance of pure FEVE resin and higher thanthe weather resistance of other resin; and the coating resin disclosed by the invention has excellent salt spray resistance (wherein the coating is subjected to scrape coating, dried at 80 DEG C for 30 minutes, then maintained for 7 days and finally tested), and the salt spray resistance exceeds 14 days and is higher than the performance of most non-FEVE coatings with the same water-based paint formula.

Description

technical field [0001] The invention belongs to the technical field of FEVE fluorocarbon resins, and in particular relates to a novel 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...

Claims

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Application Information

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