Modified urushiol anticorrosive paint for outdoor use, and preparation method thereof
A technology of anti-corrosion paint and urushiol, applied in the direction of anti-corrosion paint, coating, etc., can solve the problems of poor weather resistance of anti-corrosion paint, achieve the effects of improving weather resistance, facilitating production and popularization, and short reaction time
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Embodiment 1
[0024] The outdoor modified urushiol anticorrosion paint of this embodiment is prepared by the following method:
[0025] Extraction of urushiol: mix raw lacquer with xylene and stir thoroughly, filter and distill to remove water and xylene to obtain urushiol resin.
[0026] Preparation of urushiol acetal resin: put urushiol solution into a four-necked flask equipped with a stirrer, condensing reflux tube, thermometer, and separating funnel, add formaldehyde water, use ammonia water as a catalyst, heat for a period of time, and dehydrate Obtain urushiol acetal resin, in the reaction process, constantly drop into xylene; The mass ratio of urushiol, formalin aqueous solution, ammoniacal liquor and xylene is 40:8:1.2:18, and the mass percent that formaldehyde accounts for in the formaldehyde solution is 35% ~40%.
[0027] Introducing fluorocarbon groups to urushiol acetal resin: Into the urushiol acetal resin in a vacuum reactor, inject vinylidene fluoride gas phase monomer and ...
Embodiment 2
[0030] Extraction of urushiol: mix raw lacquer with xylene and stir thoroughly, filter and distill to remove water and xylene to obtain urushiol resin.
[0031] Preparation of urushiol acetal resin: put urushiol solution into a four-necked flask equipped with a stirrer, condensing reflux tube, thermometer, and separating funnel, add formaldehyde water, use ammonia water as a catalyst, heat for a period of time, and dehydrate Obtain urushiol acetal resin, in the reaction process, constantly drop into xylene; The mass ratio of urushiol, formaldehyde aqueous solution, ammoniacal liquor and xylene is 42:9:1.1:16; The mass percent that formaldehyde accounts for in the formaldehyde solution is 35% ~40%.
[0032] Introduce fluorocarbon groups to urushiol acetal resin: Into the urushiol acetal resin in a vacuum reactor, inject vinylidene fluoride gas phase monomer and methanol solution of sodium methoxide as a catalyst for reaction, and continuously introduce vinylidene fluoride gas p...
Embodiment 3
[0035] Extraction of urushiol: mix raw lacquer with xylene and stir thoroughly, filter and distill to remove water and xylene to obtain urushiol resin.
[0036] Preparation of urushiol acetal resin: put urushiol solution into a four-necked flask equipped with a stirrer, condensing reflux tube, thermometer, and separating funnel, add formaldehyde water, use ammonia water as a catalyst, heat for a period of time, and dehydrate Obtain urushiol acetal resin, in the reaction process, constantly drop into xylene; The mass ratio of urushiol, formaldehyde aqueous solution, ammoniacal liquor and xylene is 32:10:1.2:15, and the mass percent that formaldehyde accounts for in the formaldehyde solution is 35% ~40%.
[0037] Introduce fluorocarbon groups to urushiol acetal resin: Into the urushiol acetal resin in a vacuum reactor, inject vinylidene fluoride gas phase monomer and methanol solution of sodium methoxide as a catalyst for reaction, and continuously introduce vinylidene fluoride ...
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