Water-based normal-temperature-curable peelable paint for safekeeping and protection of instrument and equipment

A room temperature curing and equipment technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor barrier performance of single-component film-forming materials, poor environmental performance of solvent-based peelable and sealed coatings, etc., to achieve Good peelability, convenient construction and low price

Inactive Publication Date: 2012-12-12
合肥华清高科表面技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Throughout the development of peelable and sealed films, the above two kinds of peelable coatings are mainly single-layer films, and the barrier properties of single-component film-forming materials are not very good. The environmental performance of solvent-based peelable and sealed coatings not good

Method used

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  • Water-based normal-temperature-curable peelable paint for safekeeping and protection of instrument and equipment
  • Water-based normal-temperature-curable peelable paint for safekeeping and protection of instrument and equipment
  • Water-based normal-temperature-curable peelable paint for safekeeping and protection of instrument and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The water-based room temperature curing peelable coating used for the protection of instruments and equipment is composed of raw materials with the following weight ratio:

[0026]

[0027] Wherein, the wetting and dispersing agent is acrylic acid copolymer sodium salt solution. Polyurethane emulsion is non-ionic containing non-ionic hydrophilic segments or hydrophilic groups in the molecule, with a solid content of 50±1%, a pH value of 7.5±0.5, a particle size of the emulsion not greater than 200nm, and a glass transition temperature range of - 25~-5℃. The nano-scale filler is nano-titanium dioxide with an average particle diameter of 40 nm. The defoamer is a mixture of foam breaking polysiloxane and hydrophobic particles. The leveling agent is polyether modified polydimethylsiloxane copolymer solvent. The thickener is a modified urea polyurethane solution.

[0028] The water-based room temperature curing peelable coating used for the preservation and protection...

Embodiment 2

[0031] The water-based room temperature curing peelable coating used for the protection of instruments and equipment is composed of raw materials with the following weight ratio:

[0032]

[0033]

[0034] Wherein, the wetting and dispersing agent, polyurethane emulsion, nano-scale filler, defoamer, leveling agent and thickener are the same as in Example 1.

[0035] The water-based room temperature curing peelable coating used for the preservation and protection of instruments and equipment, the steps are as follows:

[0036] Under the condition of stirring at 1500rpm, add nano-scale fillers to the polyurethane emulsion with wetting and dispersing agent, disperse for 2 hours with a sand mill, disperse, and stir multipurpose machine, then add defoamer, leveling agent and thickener in sequence, and disperse Serve evenly.

Embodiment 3

[0038] The water-based room temperature curing peelable coating used for the protection of instruments and equipment is composed of raw materials with the following weight ratio:

[0039]

[0040] Wherein, the wetting and dispersing agent, polyurethane emulsion, nano-scale filler, defoamer, leveling agent and thickener are the same as in Example 1.

[0041] The water-based room temperature curing peelable coating used for the preservation and protection of instruments and equipment, the steps are as follows:

[0042] Under the condition of stirring at 1400rpm, add nano-scale fillers to the polyurethane emulsion with wetting and dispersing agent, disperse with sand milling, dispersing and stirring multipurpose machine for 2.4 hours, and then add defoamer, leveling agent and thickener in sequence, Get it after it is evenly dispersed.

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Abstract

The invention discloses a water-based normal-temperature-curable peelable paint which is applicable to the safekeeping and protection of instrument and equipment. The water-based normal-temperature-curable peelable paint for the safekeeping and protection of instrument and equipment comprises the following raw materials in parts by weight: 80-90 parts of polyurethane emulsion, 8-12 parts of wetting dispersant, 2-3 parts of nano filler, 0.5-0.8 part of defoaming agent, 0.5-0.8 part of leveling agent and 0.5-0.8 part of thickener. The water-based normal-temperature-curable peelable paint product disclosed by the invention fundamentally contains no organic solvent component, is environment-friendly and pollution-free, is short in film-forming time and has good leveling property. The product is convenient to construct, the formed film is uniform, the bonding force exerted on the basal body is moderate, and the paint can be peeled easily. The detection through a test shows that when the coating thickness is 0.13-0.14mm (coated twice), the average tensile strength of the coating is up to 9.51Mpa, the average elongation at break is up to 274.54%, and the peeling property is the best.

Description

technical field [0001] The invention discloses a water-based room-temperature-curable strippable paint, which is suitable for sealing and protecting instruments and equipment, and can also be used for protecting workpieces between processes in the metal surface treatment industry, such as processes such as painting and electroplating. Background technique [0002] Peelable seal coating is a protection or seal technology that emerged in the 1940s. Generally speaking, it is a protective layer prepared from components such as film formers, corrosion inhibitors, plasticizers, and solvents. It is applied to the surface of the article by spraying, brushing, and dipping to form a layer of structure. Dense protective layer. In addition to preventing moisture and air from penetrating into the surface of the article, this protective layer has a composite protective effect of corrosion inhibitor. In addition, because the coating is soft and elastic, it can withstand mechanical impact ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12
Inventor 饶丹
Owner 合肥华清高科表面技术股份有限公司
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