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Paint with low VOC (Volatile Organic Compound) for aircraft and preparation method thereof

A technology of aircraft and coatings, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as environmental pollution, surface defects, and shrinkage cavities

Active Publication Date: 2011-09-07
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, domestic brands of aircraft coatings are still conventional solvent-based, and a large amount of organic solvents used in such coatings volatilize into the atmosphere, which not only causes serious pollution to the environment but also causes a serious waste of energy and resources. Increasing awareness of environmental protection and strict restrictions on VOC emissions in various countries around the world
Some domestic research institutes have conducted research on coatings for aircraft with high solid content and low VOC, but the products studied still have high VOC during coating application, it is difficult to balance the drying time and application period of the coating film, and surface defects (sags) appear during coating application. , orange peel, shrinkage, shrinkage cavity) and other problems, cannot replace foreign products

Method used

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  • Paint with low VOC (Volatile Organic Compound) for aircraft and preparation method thereof
  • Paint with low VOC (Volatile Organic Compound) for aircraft and preparation method thereof
  • Paint with low VOC (Volatile Organic Compound) for aircraft and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 prepares the hydroxyl polyester resin of caprolactone monomer modification

[0047] (1) Formula

[0048] Using acid monomers, alcohol monomers and caprolactone monomer ε-caprolactone as raw materials, the dosage of each monomer is as follows: in the total weight of acid monomers, aliphatic dibasic acid monomers account for 60-90% %, the balance is polybasic acid monomer trimellitic anhydride, in the total weight of alcohol monomers, polyol monomers account for 5-25%, and the balance is dibasic alcohol monomers, the total amount of acid monomers and alcohol The molar ratio of the total amount of quasi-monomers is 1:1.3-1.85; the caprolactone monomer ε-caprolactone accounts for 5-15% of the total weight of all monomers, and the specific formula is shown in Table 1.

[0049] Table 1

[0050]

[0051]

[0052] Note 1: The data in the brackets in Table 1 is the percentage of the amount of the monomer;

[0053] Note 2: The raw materials for preparing cap...

Embodiment 2

[0059] Embodiment 2 prepares polycaprolactone polyol resin (referred to as polyol resin)

[0060] (1) Formula

[0061] Using caprolactone monomer ε-caprolactone and alcohol monomers as raw materials, the amount of each monomer is as follows: In the total weight of the monomers, the caprolactone monomer ε-caprolactone accounts for 60-90%, and the balance It is an alcohol monomer, and its specific formula is shown in Table 3.

[0062] table 3

[0063]

[0064] Note 1: The data in brackets in Table 3 is the percentage of the amount of the monomer;

[0065] Note 2: The raw materials used for preparing polycaprolactone polyol resin are not limited to the raw materials used in Table 3, and can be selected from the raw materials listed below: the alcohol monomers used are 1,4-butanediol, 1,6-hexane Diol, nonanediol, decanediol, neopentyl glycol, 2-methyl-1,3 propanediol, diethylene glycol, 1,4-cyclohexanedimethanol or trimethylolpropane One or more; the ring-opening catalyst u...

Embodiment 4

[0071] Embodiment 4 prepares component second 1#~2#

[0072] (1) Formula

[0073] Component B is made up of following components, and by weight percentage, each component consumption is as follows:

[0074] Caprolactone monomer-modified hydroxyl polyester resin 20-60%, polycaprolactone polyol resin 3-15%, pigment 5-50%, dispersant 1-3%, composite leveling agent 0.1-1% , 0.05-0.15% of acetylacetonate salt catalyst, 0.1-0.4% of hindered amine light stabilizer, 0.2-0.6% of polyolefin wax anti-sedimentation aid, and mixed solvent as the balance. The specific formula is shown in Table 5.

[0075] table 5

[0076]

[0077]

[0078] Note: EFKA-3034 in Table 5 is an organo-modified polysiloxane leveling aid produced by Efka in the Netherlands; EFKA-3777 is a modified polyacrylate leveling aid produced by Efka in the Netherlands;

[0079] (2) Specific operation

[0080] Add caprolactone monomer-modified hydroxyl polyester resin, polycaprolactone polyol resin, dispersant, polyol...

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PUM

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Abstract

The invention relates to a paint with low VOC (Volatile Organic Compound) for an aircraft and a preparation method thereof. A component A of the paint is HDT-LV2 produced by the French Rhodia Company and has a nonvolatile matter content of 100 percent by weight; a component B of the paint consists of the following components in percentage by weight: 20-60 percent of caprolactone monomer modified hydroxyl polyester resin, 3-15 percent of polycaprolactone polyol resin, 5-50 percent of paint, 1-3 percent of dispersant, 0.1-1 percent of composite flatting agent, 0.05-0.15 percent of acetylacetonetype catalyst, 0.1-0.4 percent of hinderdeamine type light stabilizer, 0.2-0.6 percent of polyolefin wax type anti-settling auxiliary agent and the balance of mixed solvent; and the mixing ratio of the component A to the component B is (0.8-1.5):1 according to the molar ratio of NCO to OH. Comprehensive performance of the paint can meet requirements of aircraft industry and the paint has low construction VOC.

Description

technical field [0001] The invention relates to a paint for aircraft with lower VOC and a preparation method thereof. The coating is particularly suitable as a topcoat for aircraft skins. Background technique [0002] With the development of the global aviation industry, aircraft coatings as ancillary products have also been greatly developed. At present, foreign aircraft coatings not only have excellent protective and decorative properties, but also have a solid content of more than 70%, a single spraying wet film thickness of more than 50 μm, and a VOC (volatile organic compound) of less than 420g / l. It has been applied to the products of well-known foreign airlines. However, domestic brands of aircraft coatings are still conventional solvent-based, and a large amount of organic solvents used in such coatings volatilize into the atmosphere, which not only causes serious pollution to the environment but also causes a serious waste of energy and resources. The ever-increa...

Claims

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Application Information

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IPC IPC(8): C09D175/06C09D7/12C08G18/42C08G63/60C08G63/08
Inventor 周如东王李军张荣伟陆文明
Owner CHINA NAT OFFSHORE OIL CORP
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