Cardanol/fluorocarbon resin/zinc powder composite marine salt mist-resistant paint and preparation method thereof
A fluorocarbon resin and cardanol technology, which is applied in the field of cardanol/fluorocarbon resin/zinc powder composite marine salt spray resistant paint and its preparation, can solve the problem that cardanol/fluorocarbon resin-based composite materials have not been reported, cardanol The base coating resin has problems such as insufficient salt spray corrosion resistance, and achieves excellent physical and mechanical properties, improved salt spray resistance, and improved photoaging effects.
Inactive Publication Date: 2019-07-23
MINJIANG UNIV
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Problems solved by technology
However, as a marine salt spray resistant coating, the cardanol-based coating resin has insufficient performance in salt spray corrosion resistance.
[0004] Cardanol / fluorocarbon resin-based composites have not been reported
Method used
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Embodiment 1
[0025] Cardanol, fluorocarbon resin, and zinc powder are mixed in a mass ratio of 3:4:3, and then add preservative sodium benzoate accounting for 1 wt% of the mixture of the three, and mechanically stir and mix at room temperature for 10 minutes to obtain cardanol / fluorocarbon resin / Zinc powder composite marine anti-corrosion paint.
[0026] When the marine salt spray resistant paint is used, 10wt% of the total mass of curing agent hexamethylene diisocyanate trimer needs to be added, and it can be applied after curing for 15 minutes. Coating can be applied after mixing with curing agent and curing for 15 minutes. The coating can be cured at room temperature to form a film within 24 hours. The impact resistance of the coating is increased to 100cm, the flexibility is increased to 2mm, the salt spray resistance reaches 3000h, the anti-light aging performance reaches 3000h, and the discoloration and loss of light are ≤ 2 grades.
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Abstract
The invention belongs to the technical field of paint materials, and particularly relates to cardanol/fluorocarbon resin/zinc powder composite marine salt mist-resistant paint and a preparation methodthereof. The preparation method thereof comprises the following steps: enabling cardanol to be mixed with fluorocarbon resin and zinc powder, then adding a preservative sodium benzoate, and stirringmechanically at room temperature to mix to obtain cardanol/fluorocarbon resin/zinc powder composite marine antiseptic paint. When the marine salt mist-resistant paint is used, a curing agent hexamethylene diisocyanate trimer, which accounts for 10% of total mass, needs to be added, and coating can be carried out after curing for 15min. Paint can cure to form a film within 24h after curing. The fluorocarbon resin is utilized by a coating to improve the comprehensive use performance, wherein the shock resistance of the coating is improved to 100cm, the flexibility is improved to 2mm, the salt mist resistance reaches 3,000h, the light aging resistance reaches 3,000h, and the discoloration light loss is less than or equal to level 2; and the cardanol/fluorocarbon resin/zinc powder composite marine salt mist-resistant paint can be applied in the marine ship undercoat.
Description
technical field [0001] The invention belongs to the technical field of paint materials, and in particular relates to a cardanol / fluorocarbon resin / zinc powder composite marine salt-spray resistant paint and a preparation method thereof. Background technique [0002] Marine anti-corrosion coatings are substances applied on marine infrastructure to ensure a long anti-corrosion period. They can quickly react with iron atoms on the surface of steel structures to form dual protection effects of physical and chemical, and can resist chloride ion corrosion for a long time. Marine seawater corrosion is mainly chloride ion corrosion. Marine chloride ions can destroy the protective layer of metal oxide film, forming pitting corrosion or pitting corrosion, and intergranular corrosion of metals. [0003] Cardanol is extracted from natural cashew nut shell oil by advanced technology. It can replace or partially replace phenol to make epoxy curing agent, liquid phenolic resin, liquid or p...
Claims
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IPC IPC(8): C09D127/12C09D5/10C09D5/25C09D7/63
CPCC08K2003/0893C08L2201/08C09D5/00C09D5/106C09D7/63C09D127/12C08K5/13C08K3/08
Inventor 薛涵与方润李心忠林棋夏建荣叶远松
Owner MINJIANG UNIV
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