Seawater-resistant oil-resistant elastic epoxy ballast tank coating and preparation method

A ballast tank, seawater-resistant technology, applied in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve toughness, fatigue resistance, heat resistance, poor impact resistance, high epoxy resin crosslinking density, difficult Meet performance requirements and other issues, and achieve the effects of excellent flexibility, excellent physical and mechanical properties, good corrosion resistance and chemical resistance

Inactive Publication Date: 2021-11-05
HUNAN AEROSPACE SANFENG SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high internal stress caused by the high crosslinking density of the cured epoxy resin, there are disadvantages such as poor toughness, fatigue resistance, heat resistance, and impact resistance, and it is difficult to meet the performance requirements of many practical engineering technologies. subject to certain restrictions

Method used

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  • Seawater-resistant oil-resistant elastic epoxy ballast tank coating and preparation method
  • Seawater-resistant oil-resistant elastic epoxy ballast tank coating and preparation method
  • Seawater-resistant oil-resistant elastic epoxy ballast tank coating and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] A component preparation includes the following steps:

[0077] S1. Preparation of aluminum-silver paste: Add aluminum paste, n-butanol, and benzyl alcohol that meet the formula requirements into the reaction kettle in sequence. It is uniform without sinking agglomerates and particles, that is, the self-made aluminum-silver paste is obtained, and the aluminum-silver paste needs to be prepared and used immediately;

[0078] S2. Add the dimer acid modified epoxy resin, epoxy resin, and xylene that meet the formula requirements into the reactor according to the proportion of the formula and stir at a low speed. The speed is controlled at 300r / min. After completion, increase the rotation speed to 1200r / min and disperse at high speed for 20 minutes;

[0079] S3. Add feldspar powder, talc powder, defoamer, anti-sedimentation agent, and benzyl alcohol at one time, continue to stir and heat up to 50°C and keep it warm for 40 minutes, then add self-made silver-aluminum paste and...

Embodiment 2

[0088] A component preparation includes the following steps:

[0089] S1. Preparation of aluminum-silver paste: Add aluminum paste, n-butanol, and benzyl alcohol that meet the formula requirements into the reaction kettle in sequence. It is uniform without sinking agglomerates and particles, that is, the self-made aluminum-silver paste is obtained, and the aluminum-silver paste needs to be prepared and used immediately;

[0090] S2. Add the dimer acid modified epoxy resin, epoxy resin, and xylene that meet the formula requirements into the reactor according to the proportion of the formula and stir at a low speed. The speed is controlled at 400r / min. After completion, increase the speed to 1300r / min and disperse at high speed for 17 minutes;

[0091] S3. Add feldspar powder, talc powder, defoamer, anti-sedimentation agent, benzyl alcohol at one time, continue to stir and heat up to 60°C for 30 minutes, then add self-made silver-aluminum paste and continue to disperse for 7 mi...

Embodiment 3

[0101] A component preparation includes the following steps:

[0102] S1. Preparation of aluminum-silver paste: Add aluminum paste, n-butanol, and benzyl alcohol that meet the formula requirements into the reaction kettle in sequence. It is uniform without sinking agglomerates and particles, that is, the self-made aluminum-silver paste is obtained, and the aluminum-silver paste needs to be prepared and used immediately;

[0103] S2. Add the dimer acid modified epoxy resin, epoxy resin, and xylene that meet the formula requirements into the reactor according to the proportion of the formula and stir at a low speed. The speed is controlled at 500r / min. After completion, increase the speed to 1400r / min and disperse at high speed for 15 minutes;

[0104] S3. Add feldspar powder, talc powder, defoamer, anti-sedimentation agent, and benzyl alcohol at one time, continue to stir and heat up to 70°C for 20 minutes, then add self-made silver-aluminum paste and continue to disperse for ...

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Abstract

The invention provides a seawater-resistant oil-resistant elastic epoxy ballast tank coating. Dimer acid epoxy resin is introduced into an epoxy coating mainly comprising a bisphenol A resin structure, and the epoxy ballast tank coating with excellent comprehensive performance is obtained by utilizing the synergistic curing effect of a curing agent. The coating comprises a component A and a component B. The component A consists of the following components in percentage by mass: 10.5-15% of dimer acid modified epoxy resin; 15-24% of epoxy resin; 5-15% of self-made aluminum paste; 30-50% of feldspar powder; 5-10% of talcum powder; 0.1-1.0% of a defoaming agent; 0.5-1.5% of an anti-sagging agent; 0.3-1.5% of an anti-settling agent; 5-12% of a xylene solvent; and 0.5-1.5% of benzyl alcohol. The component B is composed of the following raw materials in percentage by mass: 90-95% of curing agent; and 5-10% of a xylene solvent. The component A and the component B are proportioned according to a mass ratio of (8-10):1 when in use.

Description

technical field [0001] The invention relates to the field of chemical coatings, in particular to a seawater, oil, and elastic epoxy ballast tank coating and a preparation method thereof. Background technique [0002] The ballast tank of marine ships is under the condition of alternating dry and wet conditions for a long time, the seawater is extremely corrosive, and it is under load pressure for a long time. The actual working environment is very harsh. The corrosion protection of the carrying tank is very important to ensure the safety of the ship. At present, anti-corrosion coating is the most important means of ballast tank anti-corrosion. [0003] Epoxy resins are widely used in various fields due to their excellent properties, especially in the field of coatings. However, commercially available epoxy resins are mainly based on bisphenol A resin structure, and bisphenol A epoxy resin has good comprehensive mechanical properties, high-strength adhesion, small shrinkage,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D163/02C09D7/61C09D5/08C08G59/14C08G59/44C08G59/50
CPCC09D163/00C09D7/61C09D5/08C08G59/1438C08G59/44C08G59/50C08K2003/0812C08L63/00C08K3/08C08K3/34
Inventor 陆腾飞张刚阳区李著初徐常利
Owner HUNAN AEROSPACE SANFENG SCI & TECH CO LTD
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