Spray polyurea elastomer applied to anticorrosion of offshore drilling platform and its preparation method and construction method

An offshore drilling platform, polyurea elastomer technology, applied in anti-corrosion coatings, coatings, devices for coating liquids on surfaces, etc., can solve problems such as poor anti-corrosion, achieve good adhesion, excellent adhesion, and excellent material properties. Effect

Active Publication Date: 2015-12-30
MARINE CHEM RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a spray-coated polyurea elastomer applied to offshore drilling platforms and its preparation method and construction method, which can solve the problem of poor corrosion resistance in the prior art, and provide a kind of reasonable configuration, high adhesion, corrosion resistance, and Polyurea elastomer protective material with long service life, anti-corrosion spray polyurea elastomer material that can be applied to mechanical equipment in the marine field such as pile legs and platforms

Method used

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  • Spray polyurea elastomer applied to anticorrosion of offshore drilling platform and its preparation method and construction method
  • Spray polyurea elastomer applied to anticorrosion of offshore drilling platform and its preparation method and construction method
  • Spray polyurea elastomer applied to anticorrosion of offshore drilling platform and its preparation method and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A: A prepolymer prepared by 51 parts of diphenylmethane diisocyanate and 50 parts of epoxy-modified polyether. The NCO content of the prepolymer was 16%.

[0048] R: from epoxy amine adducts, T-403, DETDA amino resin and TiO2, carbon black, calcium carbonate mixture. Accurately weigh the various raw materials in the R component according to the formula, add them into the paint tank, and stir at high speed for 30 minutes with high-speed shearing and dispersing equipment.

[0049] The specific ratio is shown in the table below.

[0050]

[0051] Main physical properties:

[0052]

[0053]

Embodiment 2

[0055] A is a prepolymer prepared from 30 parts of diphenylmethane diisocyanate and 44 parts of polyphenylmethane diisocyanate and 50 parts of epoxy-modified polyol. The NCO content of the prepolymer was 18%. The R component consists of epoxy amine adducts, D-400, DETDA amino resin and TiO2, carbon black, talcum powder, mica powder mixture. Accurately weigh the various raw materials in the R component according to the formula, add them into the paint tank, and stir at high speed for 30 minutes with high-speed shearing and dispersing equipment.

[0056] The specific ratio is shown in the table below.

[0057]

[0058] Main physical properties:

[0059]

Embodiment 3

[0061] A Prepolymer is prepared from about 30 parts of diphenylmethane diisocyanate and 44 parts of polyphenylmethane polyisocyanate and 50 parts of epoxy-modified polyol. The NCO content of the prepolymer was 18%. The R component consists of epoxy amine adducts, T-403 amino resin, T-5000, DETDA amino resin, TiO 2 , mica powder mixture. Accurately weigh the various raw materials in the R component according to the formula, add them into the paint tank, and stir at high speed for 30 minutes with high-speed shearing and dispersing equipment.

[0062] The specific ratio is shown in the table below.

[0063]

[0064]

[0065] Main physical properties:

[0066]

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Abstract

The invention provides a spray polyurea elastomer applied to marine drilling platforms as well as a preparation method and construction method thereof. The problems of poor adhesion and poor corrosion resistance in the marine environments in the prior art can be solved. The spray polyurea elastomer comprises components A and R and is characterized in that the component A is a semi-prepolymer synthesized by 10-40 parts of polyisocyanates, 20-90 parts of epoxy modified polyether polyol and 0-50 parts of polyether polyol by weight; the component R comprises 15-60 parts of epoxy amine adduct, 0-30 parts of amine-terminated polyether resin, 15-40 parts of chain extender and 5-25 parts of filler by weight. The spray polyurea elastomer material has good physical properties and high adhesion, simultaneously has excellent oil resistance, salt mist resistance, bacterium resistance, aging resistance and construction properties, can be shaped randomly, and can be widely applied to the parts with relatively high corrosion prevention requirements, such as platform decks, pile legs and the like of the marine drilling platforms.

Description

technical field [0001] The invention relates to the field of anti-corrosion polymer chemical materials for platform decks and pile legs of ocean drilling platforms, in particular to a spray-coated polyurea elastomer used for anti-corrosion of ocean drilling platforms and its preparation method and construction method. Background technique [0002] The operating environment of offshore platforms is extremely harsh. Sunshine, sea breeze, wave impact, complex seawater systems, diurnal and seasonal temperature changes, and marine biological erosion make offshore platforms corrode faster, so the requirements for anti-corrosion protection systems are also high. [0003] Anti-corrosion coatings for offshore drilling platforms initially used vinyl acetate copolymers and epoxy amine resins. Subsequently, vinyl chloride with low water vapor penetration was used, but due to its low solid content, it was difficult to apply thick coating. Generally, 5-7 layers can be applied to achieve a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C09D7/12C09D5/08C08G18/64C08G18/48C08G18/32C08G81/00B05D1/02
Inventor 徐春英杨春嘉吴文文崔洪犁孙晋良
Owner MARINE CHEM RES INST CO LTD
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