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Modified epoxy ballast tank paint

A ballast tank and epoxy technology, applied in epoxy resin coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as peeling, easy foaming of the coating film, and affecting the protective effect of epoxy coatings, and achieve improved Migration resistance, flexibility improvement effect

Active Publication Date: 2014-11-05
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with unmodified epoxy coatings, liquid petroleum resin modified epoxy coatings found in the condensation chamber test (water at 40°C) that the coating film is prone to foaming, which affects the protective effect of the coating film
In addition, in order to greatly improve the coating efficiency and save resources, epoxy coatings can be coated on steel with a good shop primer after light sweeping, which requires epoxy coatings and shop primers to have good wettability and strong adhesion, otherwise the coating film will peel off from the shop primer, affecting the protective effect of the epoxy coating

Method used

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  • Modified epoxy ballast tank paint
  • Modified epoxy ballast tank paint
  • Modified epoxy ballast tank paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1 prepares modified resin

[0014] ① See Table 1 for the formula.

[0015] Table 1

[0016]

[0017]

[0018] ② Preparation of modified resin

[0019] According to the formula in Table 1, add the hydroxyl-containing liquid carbon-9 resin and dibutyltin laurate into the reactor and stir to raise the temperature. At 80°C, add the polyether polyurethane solution containing terminal isocyanate groups into the reaction kettle dropwise, and the dropwise addition is completed. After the heat preservation for 2 hours, the modified resin 1 and the modified resin 2 were respectively prepared by cooling and discharging, and stored for later use. The appearance of the modified resin was light yellow and transparent, and it was stored at 50°C for 30 days without gelling;

Embodiment 2

[0020] Embodiment 2 prepares the A component of modified epoxy ballast tank coating

[0021] ① See Table 2 for the specific formula of component A.

[0022] Table 2

[0023]

[0024] ② Preparation of component A

[0025] In the dispersion tank, add epoxy resin, modified resin, organic solvent, additives, stir evenly, add organic bentonite, stir at high speed for 15 minutes to fully wet and disperse organic bentonite, then add titanium dioxide, talc powder, feldspar powder , stirred evenly, and then ground to a fineness of 60 μm by a sand mill, filtered and packaged to prepare component A 1 and component A 2 of the modified epoxy ballast tank coating respectively, and store them for future use.

[0026] The B component of the modified epoxy ballast tank coating of the present invention is to be raw material with polyamide, the siloxane coupling agent containing 2 nitrogens, methyl isobutyl ketone, part polyamide and the siloxane coupling agent containing 2 nitrogens Silox...

Embodiment 3

[0027] Embodiment 3 prepares the B component of modified epoxy ballast tank coating

[0028] ① See Table 3 for the formula.

[0029] table 3

[0030]

[0031] ② Preparation of component B

[0032] Take 30 parts by mass of polyamide into the reaction kettle, then add silane coupling agent containing 2 nitrogens and methyl isobutyl ketone, and heat up to the reflux temperature of 110-120°C for dehydration until there are basically no water drops in the water separator After falling out and continuing to reflux for 1 hour, cool down to 40°C and add the remaining 45 parts by mass of polyamide, stir evenly, and filter. The obtained filtrates are B component 1 and B component 2 respectively, and their appearance is initially transparent. The sample was sealed in a glass bottle, and it was still transparent after 6 months at room temperature.

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PUM

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Abstract

The invention relates to a modified epoxy ballast tank paint which is prepared from a component A and a component B in mass ratio of 100:20, wherein every 100 mass parts of component A comprises 20 parts of epoxy resin, 10 parts of modified resin, 50-55 parts of pigment and filler, 1-3 parts of assistant and the balance of organic solvent; the modified resin is the reaction product of hydroxyl-containing liquid C-9 resin and isocyanate-terminated polyether polyurethane in a mass ratio of 1 / 1; and the component B is prepared by the following steps: by using polyamide, 2-nitrogen-containing siloxane coupling agent and methyl isobutyl ketone as raw materials, dehydrating part of the polyamide, the 2-nitrogen-containing siloxane coupling agent and the methyl isobutyl ketone at 110-120 DEG C under reflux, continuing refluxing for 1 hour after finishing dehydrating, cooling to 40 DEG C, adding the rest of polyamide, and uniformly stirring to obtain the component B. The properties of the coated film of the modified epoxy ballast tank paint completely satisfy the requirements of Norsok M-501 for ballast tank paints.

Description

technical field [0001] The invention relates to a modified epoxy ballast tank paint. Background technique [0002] The ship ballast tank is a rather special type of compartment in the ship's interior. Due to the severe corrosive environment of high temperature, high humidity and seawater immersion in the cabin, and the repeated loading and discharge of seawater during use, coupled with the complex structure of the cabin, the anti-corrosion coating of the ballast tank is easy to be used in a short period of time. Early failures such as blistering, cracks, and spalling occur within a short period of time, which will cause corrosion of the hull structure of the ballast tank and bring harm to the ship. At present, 90% of the ballast tanks are protected by high solid epoxy anti-corrosion coatings. Generally, it is prepared with liquid epoxy resin and low-viscosity curing agent. The coating film has high cross-linking degree, good wear resistance and strong adhesion, but the coa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D175/08C09D7/12C08G18/62
Inventor 马胜军沈海鹰王秀娟李敏潘煜怡刘宝成方健君
Owner CHINA NAT OFFSHORE OIL CORP