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A kind of one-component room temperature self-crosslinking fluorosilicone modified epoxy modified feve coating and preparation method thereof

A technology of fluorine-silicon modification and epoxy modification, which is applied in the direction of epoxy resin coatings and coatings, can solve the problems of inconvenient construction and ingredients, and achieve the effects of low cost, wide application range and high cost performance

Active Publication Date: 2021-10-08
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 two-component construction, and they need to be quantitatively proportioned with the curing agent before use, which brings inconvenience to construction and batching

Method used

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  • A kind of one-component room temperature self-crosslinking fluorosilicone modified epoxy modified feve coating and preparation method thereof
  • A kind of one-component room temperature self-crosslinking fluorosilicone modified epoxy modified feve coating and preparation method thereof
  • A kind of one-component room temperature self-crosslinking fluorosilicone modified epoxy modified feve coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The single-component normal temperature self-crosslinking fluorosilicon modified epoxy modified FEVE coating of the present embodiment comprises by weight:

[0028]

[0029] The specific preparation steps of the single-component normal temperature self-crosslinking fluorosilicon modified epoxy modified FEVE coating of the present invention are:

[0030] (1) At room temperature, add 20 parts of hydroxyfluorosilicone oil to a three-necked flask with a condenser tube-water separator, vacuum dehydrate at 120°C for 30 minutes, remove residual water, and prepare reactant I.

[0031] (2) Cool down to 50°C, add 4 parts of phthalic anhydride, slowly raise the temperature to 80°C, and keep the temperature for 1 hour to prepare reactant II.

[0032] (3) Add 6 parts of E-20 epoxy resin, raise the temperature to 120°C, and react for 3 hours to obtain reactant III.

[0033] (4) Add 7 parts of FEVE fluorocarbon resin to reactant III, then add 27 parts of linolenic acid and 4 parts...

Embodiment 2

[0041] The single-component normal temperature self-crosslinking fluorosilicon modified epoxy modified FEVE coating of the present embodiment comprises by weight:

[0042]

[0043] The specific preparation steps of the single-component normal temperature self-crosslinking fluorosilicon modified epoxy modified FEVE coating of the present invention are:

[0044] (1) At room temperature, add 17 parts of hydroxyfluorosilicone oil to a three-neck flask with a condenser tube-water separator, vacuum dehydrate at 110°C for 60 minutes, remove residual water, and prepare reactant I.

[0045] (2) Cool down to 45°C, add 5 parts of phthalic anhydride, slowly raise the temperature to 75°C, and keep the temperature for 1.5h to prepare reactant II.

[0046] (3) Add 8 parts of E-20 epoxy resin, raise the temperature to 130°C, and react for 4 hours to obtain reactant III.

[0047] (4) Add 8 parts of FEVE fluorocarbon resin to reactant III, then add 30 parts of linolenic acid and 5 parts of ...

Embodiment 3

[0055] The single-component normal temperature self-crosslinking fluorosilicon modified epoxy modified FEVE coating of the present embodiment comprises by weight:

[0056]

[0057] The specific preparation steps of the single-component normal temperature self-crosslinking fluorosilicon modified epoxy modified FEVE coating of the present invention are:

[0058](1) At room temperature, add 14 parts of hydroxyfluorosilicone oil to a three-necked flask with a condenser tube-water separator, vacuum dehydrate at 150°C for 45 minutes, remove residual water, and prepare reactant I.

[0059] (2) Cool down to 65°C, add 7 parts of phthalic anhydride, slowly raise the temperature to 90°C, and keep the temperature for 1.2 hours to prepare reactant II.

[0060] (3) Add 10 parts of E-20 epoxy resin, raise the temperature to 125°C, and react for 2 hours to obtain reactant III.

[0061] (4) Add 9 parts of FEVE fluorocarbon resin to reactant III, then add 33 parts of linolenic acid and 7 pa...

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Abstract

The invention discloses a single-component normal temperature self-crosslinking fluorosilicon modified epoxy modified FEVE coating and a preparation method thereof, which belongs to the technical field of FEVE fluorocarbon resins. The single component normal temperature self-crosslinking fluorosilicon modified epoxy modified Non-toxic FEVE coatings, by weight, include: 14-20 parts of hydroxyfluorosilicone oil, 4-7 parts of phthalic anhydride, 6-10 parts of E-20 epoxy resin, 27-33 parts of linolenic acid, 7-7 parts of FEVE fluorocarbon resin 9 parts, 4 to 7 parts of xylene and 20 to 32 parts of propylene glycol butyl ether; the single-component construction of the coating prepared by the present invention improves the inconvenience of the two-component construction of the prior art FEVE coating; the weather-resistant coating of the present invention The resistance is lower than that of pure FEVE resin, but higher than other resins; it has excellent salt spray resistance (the coating scraper is baked at 80°C for 30 minutes, and then tested after 7 days of curing), and the salt spray resistance is good, which is higher than that of the same coating formula Most non-FEVE type coating properties.

Description

technical field [0001] The invention belongs to the technical field of FEVE fluorocarbon resins, and in particular relates to a single-component normal-temperature self-crosslinking fluorosilicon-modified epoxy-modified FEVE coating 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 substanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/08C09D163/00C09D127/12C09D7/63
CPCC08L2205/03C09D183/08C09D7/63C08L63/00C08L27/12C08K5/09
Inventor 卫晓利张发兴
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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