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Strippable heat-proof antirust protective film coating and preparation method thereof

A protective film and coating technology, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as low glass transition temperature, poor environmental protection, and aesthetic impact, and achieve easy peeling, waterproof and anti-corrosion capabilities Better, Wider Effects

Inactive Publication Date: 2015-04-08
SHANGHAI DATONG TABERNACLE NEW ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now the commonly used anti-rust protective film: one is to use solvent-based polyvinyl chloride, thermoplastic acrylic resin, various rubber and other film-forming substances to develop, but because it is a solvent-based coating, the environmental protection is not good, and it has become more and more unsuitable. The need for future development; the second is the emulsion-type protective film, although it solves the environmental protection problem (most emulsions still contain a certain amount of voc), but because the paint contains a lot of water, it is not suitable for metal precision instruments. At the same time, the emulsion used as a protective film must have flexibility, and its glass transition temperature is generally low (when the glass transition temperature is high, the coating film is brittle and not easy to peel off), and it is easy to soften the surface under high temperature conditions, and adhere to dirt and sundries Wait, affect the appearance

Method used

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  • Strippable heat-proof antirust protective film coating and preparation method thereof
  • Strippable heat-proof antirust protective film coating and preparation method thereof
  • Strippable heat-proof antirust protective film coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0042] A method for preparing a peelable heat-resistant and anti-rust protective film coating, comprising the following steps:

[0043] 1. Paint material:

[0044]

[0045] 2. Curing agent:

[0046] Isocyanate polymer 33.0

[0047] The preparation method is as follows process steps:

[0048] First put 90.0 parts of hydroxyl-containing linear polyester resin into the reaction kettle, and heat it to 30-60°C for stirring, keep stirring and put in 3.0 parts of organosilicon-based peeling accelerator, 2.0 parts of organic phosphate-based peeling accelerator, 2.5 parts of organotin film-forming accelerator, 1.0 parts of silicone foam breaker, 1.5 parts of silicone leveling agent, stir for 0.5 to 2.5 hours; after mixing evenly, stop the machine for more than 6 hours to ensure that the paint is mixed evenly. After defoaming, Cooperate with the curing agent to measure the solid content and peeling ability. After meeting the requirements, cool, weigh and pack; the curing agent is ...

Embodiment 2

[0050] A method for preparing a peelable heat-resistant and anti-rust protective film coating, comprising the following steps:

[0051] 1. Paint material:

[0052]

[0053] 2. Curing agent:

[0054] Isocyanate polymer 36.0

[0055] The preparation method is as follows process steps:

[0056] First put 93.0 parts of hydroxyl-containing linear acrylic resin into the reaction kettle, and heat it to 30-60°C for stirring, keep stirring and put in 2.0 parts of organosilicon-based peeling accelerator, 1.0 part of organic phosphate-based peeling accelerator, 2.0 parts 1 part of organotin film-forming accelerator, 1.0 part of silicone foam breaker, 1.0 part of silicone leveling agent, stir for 0.5 to 2.5 hours; after mixing evenly, stop the machine for more than 6 hours to ensure that the paint is evenly mixed. After defoaming, mix The curing agent measures the solid content and peeling ability. After reaching the requirements, it is cooled, weighed and packaged; the curing agent...

Embodiment 3

[0058] A method for preparing a peelable heat-resistant and anti-rust protective film coating, comprising the following steps:

[0059] 1. Paint material:

[0060]

[0061] 2. Curing agent:

[0062] Isocyanate polymer 30.0

[0063] The preparation method is as follows:

[0064] First put 91.0 parts of hydroxyl-containing linear polyester resin into the reaction kettle, and heat it to 30-60°C for stirring, keep stirring and put in 3.0 parts of organic silicon peeling accelerator, 3.0 parts of organotin film-forming accelerator, 1.5 1 part silicone foam breaker, 1.5 parts silicone leveling agent, stir for 0.5 to 2.5 hours; stop the machine for more than 6 hours after mixing evenly to ensure that the paint is evenly mixed. After defoaming, measure the solid content and peeling ability with the curing agent. After reaching the requirements, cool, weigh and pack; the curing agent is directly packed. When in use, the peelable heat-resistant and anti-rust protective film paint c...

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Abstract

The invention relates to strippable heat-proof antirust protective film coating and a preparation method thereof. The raw material of the protective film coating is formed by paint and curing agent. The paint comprises, by weight, 88-96 parts of linear chain polyester resin or acrylic resin containing hydroxide radical, 2.0-5.0 parts of stripping accelerant, 1.0-3.0 parts of film-forming accelerant, 0.5-2.0 parts of antifoaming agent and 0.5-2.0 parts of flatting agent. The curing agent comprises, by weight, 25-40 parts isocyanate polymer. The linear chain polyester resin or the acrylic resin containing the hydroxide radical is heated and stirred and then added in other components except the curing agent, the isocyanate polymer is added in the mixture during usage, and the strippable heat-proof antirust protective film coating is obtained after even mixing. The strippable heat-proof antirust protective film coating does not contain solvent, meets environment-friendly requirements, simultaneously has high waterproof performance, oil resistance, temperature resistance, abrasion resistance and strippable performance, can have metal surfaces, stripping surfaces, plastic surfaces and the like at the same time, and has temporary antirust protection effects.

Description

technical field [0001] The invention relates to a protective film and a preparation method thereof, in particular to a peelable heat-resistant antirust protective film coating and a preparation method thereof. Background technique [0002] Peelable anti-rust protective film is usually used for temporary protection of metal, glass, plastic and other materials such as precision parts, mechanical equipment, instruments and meters, so that it will not be rubbed by processing liquid, high humidity and high temperature climate and external impact during processing and transportation It can damage its precision, surface finish and even rust, etc., and it can also be used to remove dirt from kitchen equipment such as range hoods. Peelable anti-rust protective film usually has the characteristics of water resistance and easy peeling after a certain time and temperature. At the same time, because of the compactness of the molecular film, it can prevent oxygen and moisture from passing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/06C09D175/04C09D7/12C09D5/08
Inventor 杨志英
Owner SHANGHAI DATONG TABERNACLE NEW ENERGY SAVING MATERIALS CO LTD
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