High-weather-resistance finish paint for protecting ship composite material and preparation method thereof

A composite material and high weather resistance technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of weak oxidation resistance, insufficient density, poor salt spray resistance, etc., and achieve good environmental protection, simple steps, and good film-forming properties Effect

Inactive Publication Date: 2021-09-21
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of epoxy coatings are strong adhesion, good shrinkage, good medium resistance, high toughness and stability, and compatibility with various topcoats. However, epoxy coatings have poor gloss retention after film formation and are easy to pulverize. , so it is often used as a primer
However, other protective coatings in the prior art also have the defects of poor salt spray resistance in varying degrees, weak oxidation resistance, and insufficient density.

Method used

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  • High-weather-resistance finish paint for protecting ship composite material and preparation method thereof
  • High-weather-resistance finish paint for protecting ship composite material and preparation method thereof
  • High-weather-resistance finish paint for protecting ship composite material and preparation method thereof

Examples

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Effect test

preparation example Construction

[0022] Preparation method of high retreat of ship composite material protection, including the following steps:

[0023] Step (1), according to the number of parts, respectively, 80-100 parts of the modified epoxy silicone resin, 1-3 parts of the BYK110 and 1-2.5 parts of organic bentonifier are placed in the bucket, and Among them, 7.5-12.5 parts of xylene was added, and then the resulting mixed material was placed in a dispersion, and the dispersion treatment was performed under the rotational speed of 700-1000 R / min, and dispersing a dispersion A, spare;

[0024] Step (2), according to the weight of the weight, 15-20 parts of the amine curing agent and 20-60 parts of mica powder were sequentially added to the dispersion prepared by the step (1), and at 1200-1500R / min Decomposition treatment under the speed of rotation 20-40 min, dispersion B, spare;

[0025] Step (3), the dispersion B obtained by step (2) is transferred in the grinder to grind the material particle diameter...

Embodiment 1- Embodiment 4

[0030] The composite material of the present invention is a normal temperature finger dry double-component weather resistant coating, and the coating can be applied with a variety of processes such as spraying, brush coating, roll coating. The thickness of each coating is 50 μm, coating The number of layers is 2-4. The specific ingredients of the embodiments are shown in the table below.

[0031] Table 1 Example 1- Example 4 ingredient table

[0032]

Embodiment 1

[0034] Example 1 A high retreat of a high retreat of a ship composite material, including the following steps:

[0035] Preparation of primary bov-modified epoxy silicone resin resin

[0036] A, according to the ratio of 1 g / 2 mL, the epoxy silicone resin and xylene solvent were placed in a reactor with magnetic stirring, and the epoxy resin dilution was prepared.

[0037] At room temperature, according to the ratio of isocyanate and epoxy silicone resin of 1 mol / 20g, the isocyanate obtained by brushing the reactant is slowly added to the step (1) prepared, in the continuous stirring conditions, The polymerization was carried out in a 120 ° C temperature environment for 3 h, and then the resulting reaction product was warmed to 140 ° C to remove xylene solvent treatment, and an epoxy prepolymer was produced.

[0038] C According to the ratio of 1 g / 12 mL, it is placed in a reactor with a mechanical stirred reactor, and after the ultrasonic dispersion is treated, and after the ...

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Abstract

The invention relates to a high weather-resistant finishing paint for protecting a ship composite material, which is prepared from the following components in parts by weight: 80 to 100 parts of modified epoxy organic silicon resin, 20 to 60 parts of mica powder, 1 to 3 parts of BYK110, 15 to 25 parts of xylene, 1 to 2.5 parts of organic bentonite and 15 to 20 parts of amine curing agent. The modified epoxy organic silicon resin and the flaky mica powder are used as main raw materials, and the flaky mica powder forms a complex and diversified multi-layer uniform distribution state in a resin base material by utilizing the compounding synergistic effect of the modified epoxy organic silicon resin and the flaky mica powder, so that the invasion path of moisture and corrosion factors on the surface of the composite material is effectively prolonged; the finished high-weather-resistance finish paint has excellent mechanical properties and high weather resistance, and can better improve the marine environment resistance of a composite material and a ship when being coated on a composite material structure part of the ship for use, thereby effectively improving the stability and reliability of the operation of the ship.

Description

Technical field [0001] The present invention relates to the field of special functional protective coatings, and in particular, a high retreat of a ship composite material and a preparation method thereof. Background technique [0002] During the actual use of composite materials in the marine environment, over time will produce aging, that is, composites are affected by the external natural environmental factors, and their chemical composition and structures have changed, and physical properties also decline. The external manifestation is faded, brittle, hard, etc .; intrinsic manifestation is due to changes in physical structures or chemical structures, which affect the use of composites and in ships. The aging phenomenon is a continuous complex process, with a variety of influencing factors and mutual effects (in the marine environment, sunshine, temperature, oxygen (ozone) and seawater are the main factors affecting the aging of the composite masts), so that the surface layer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/06C09D7/61C09D5/08
CPCC09D183/06C09D7/61C09D7/70C09D5/08C08K2201/005C08K2003/2227C08K7/00C08K3/34C08K3/22
Inventor 叶志民庄海燕陈翔
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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