A preparing method of heavy-duty anticorrosion coating

A heavy-duty anti-corrosion and coating technology, which is applied in the direction of anti-corrosion coatings, powder coatings, epoxy resin coatings, etc., can solve problems such as insufficient dispersion, surface color separation, and sickness of paint films, so as to improve mechanical properties and corrosion resistance. The effect of interlayer adhesion and simple preparation process

Inactive Publication Date: 2017-12-15
DEYANG CARBONENE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But in actual use, this preparation method still has following defects: one, the preparation process of finished paint is complicated, and in step (1) because graphene content is less, there are many grinding media, easily cause graphene and grinding Insufficient media contact resulting in insufficient dispersion
2. The use of the graphene-resin composite slurry described in step (1) and subsequent color drop in the paint mixing process is prone to floating color imagination, resulting in a sickly state of the paint film, and it is easy to cause color separation, color differences, and color differences on the surface of the paint film after drying and curing. The uneven distribution of pigments and fillers directly affects the appearance and anti-corrosion performance

Method used

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  • A preparing method of heavy-duty anticorrosion coating

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Effect test

Embodiment 1

[0023] A preparation method for heavy-duty coating, comprising the following steps:

[0024] (1) Mixing

[0025] Add resin, pigments and fillers, graphene, solvents and additives into the disperser in proportion. During the feeding process, the dispersing disc of the dispersing machine keeps rotating at a speed of 400-500r / min. After the materials are put in, adjust the rotating speed of the dispersing disc to 1800 -2000r / min, stop after 1h.

[0026] In this step, the mass percentage of each component in the step (1) is: resin 20-45%, pigment and filler 30-55%, graphene 0.5-1%, solvent 5-25%, additive 0.5-2% %.

[0027] In this step, the resin is any one of normal temperature curing novolak epoxy resin F-44, epoxy resin E-20, epoxy resin E-44, fluorocarbon resin JF-2x, acrylic resin or alkyd resin . Wherein, when the resin is solid, the solid resin needs to be crushed into powder before use, and the size of the powder is not limited, as long as it can be quickly dissolved ...

Embodiment 2

[0036] A preparation method for heavy-duty coating, comprising the following steps:

[0037] (1) Mixing

[0038] The mass percentage is 39% room temperature curing novolak epoxy resin F-44, 12% sericite, 19% iron red, 5% ultrafine talcum powder, 9% aluminum tripolyphosphate, 4% poly Zinc phosphate, 5% of VT600, 1% of organic bentonite, 0.5% of intrinsic graphene, 4% of xylene, 1% of n-butanol and 0.5% of dispersant are added to the disperser. During the feeding process, the dispersion The dispersing disc of the machine keeps rotating at a speed of 400r / min. After the material is put in, adjust the rotating speed of the dispersing disc to 1800r / min, and stop after keeping it for 1h.

[0039] (2) grinding

[0040] Replace the dispersing disk with a sanding disk, and make the sanding disk grind the material at 2800r / min. During the grinding process, stop the machine every 2 hours to check the fineness until the fineness reaches 40um, stop the machine to discharge the material, ...

Embodiment 3

[0042] A preparation method for heavy-duty coating, comprising the following steps:

[0043] (1) Mixing

[0044] The mass percentage is 20% epoxy resin E-44, 14% sericite, 16% iron red, 16% superfine talcum powder, 8% aluminum tripolyphosphate, 1% organic bentonite, 1% Intrinsic state graphene, 12.8% xylene, 10% n-butanol, 1% dispersant, 0.2% defoamer are added to the disperser, and during the feeding process, the dispersing disc of the disperser maintains 500r / min After the material is put in, adjust the speed of the dispersing disc to 2000r / min, keep it for 1h and then stop.

[0045] (2) grinding

[0046] Replace the dispersing disk with a sanding disk, and make the sanding disk grind the material at 2000r / min. During the grinding process, stop the machine every 2 hours to check the fineness until the fineness reaches 40um, stop the machine to discharge the material, and filter to remove impurities to obtain the finished paint.

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Abstract

A preparing method of heavy-duty anticorrosion coating is disclosed. The method includes (1) a material mixing step, namely a step of adding resin, a pigment filler, graphene, a solvent and an auxiliary agent into a dispersing machine according to a ratio, with a dispersing disc of the dispersing machine rotating at a speed of 400-500 r/min in a material adding process, adjusting the rotating speed of the dispersing disc after addition is finished to 1800-2000 r/min, maintaining the speed for 1 h, and shutting down the machine; and (2) a grinding step, namely a step of replacing the dispersing disc into a sand grinding disc, grinding the materials by the sand grinding disc at a speed of 2000-2800 r/min until the fineness is 40 [mu]m, shutting down the machine, discharging a product, and filtering the product to obtain a coating finished product. The method can improve anticorrosion performance defects of anticorrosion coating at present, and allows the coating to achieve a long-term anticorrosion objective. In addition, a coating preparing process is simplified and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, and in particular relates to a preparation method of heavy-duty anti-corrosion coatings. Background technique [0002] There are many types of existing anti-corrosion coatings, incomplete statistics, there are more than 1,000 types of anti-corrosion coatings in my country, the traditional classification by resin is epoxy, epoxy asphalt, asphalt, chlorinated rubber, chlorosulfonated polyethylene, polyvinyl chloride , perchlorethylene, urushiol resin, ethyl silicate, high chlorinated polyethylene, polyurethane, polyurethane bitumen, phenolic, alkyd paint, etc. Epoxy resin anti-corrosion coatings are the most important type of heavy-duty anti-corrosion coatings. Epoxy resin heavy-duty anti-corrosion coatings mainly include: epoxy zinc-rich anti-corrosion paint, epoxy coal tar pitch paint, epoxy glass flake paint, powder epoxy anti-corrosion paint and water-emulsion epoxy anti-corrosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D133/00C09D127/12C09D5/03C09D5/08C09D7/12
CPCC09D163/00C08K2003/2241C08K2003/2272C08K2003/2296C08K2003/265C08K2003/3045C08K2003/327C08K2201/011C09D5/031C09D5/033C09D5/038C09D5/08C09D127/12C09D133/00C08L91/06C08K13/04C08K7/00C08K3/34C08K3/32C08K3/30C08K3/346
Inventor 赵景浩彭辉姚林高华
Owner DEYANG CARBONENE TECH
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