Oil-stain-resistant coating for melamine tableware and preparation method of oil-stain-resistant coating

A technology for preventing oil stains and tableware, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as human health, social environmental pollution, large impact of pollution, inconvenient cleaning of tableware, etc.

Inactive Publication Date: 2022-03-15
安徽京尚美密胺制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Melamine tableware belongs to high-molecular polymers, and its monomers are formaldehyde and melamine; so far, there are many studies on the design and preparation of anti-fouling and self-cleaning surfaces of melamine tableware, but most of the functional surfaces are devoted to water droplets. Pollution protection and self-cleaning effect
In comparison, the adhesion and pollution of low surface tension liquids represented by various oils on the surface have a greater impact, and surface cleaning is more difficult. During cleaning, oil stains on the outer surface of melamine tableware will cause inconvenience in tableware cleaning. , easy to fall off, causing damage to melamine tableware
[0003] At present, fluoride materials with low surface energy are often used as the outermost surface of the coating to reduce oil adhesion. Currently, fluorine-containing materials typically represented by polytetrafluoroethylene (Teflon non-stick pan) are used to control low surface energy. However, in recent years, with the enhancement of environmental awareness and the further deepening of the concept of green sustainable development, it has been found that fluorine-containing materials have brought serious problems to human health, social and environmental pollution, etc.

Method used

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  • Oil-stain-resistant coating for melamine tableware and preparation method of oil-stain-resistant coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The multi-component composite powder is made by the following steps:

[0026] Step S1, adding aluminum chloride hexahydrate into 15% ethanol aqueous solution by volume fraction, stirring magnetically for 30 minutes, then adding it into a supergravity reactor, stirring at a constant speed of 2000r / min, adding an alcohol solution with a mass fraction of 10% ammonia water, and stirring at a constant speed Stir and react for 5 minutes, take it out, obtain a suspension, filter and wash with absolute ethanol three times, dry, then calcinate at 550°C for 10 hours, and then high-speed ball mill for 10 hours to obtain nanopowder, control aluminum chloride hexahydrate and ethanol The dosage ratio of the aqueous solution is 0.8mol: 1000mL, and the volume ratio of the alcohol solution of ammonia water to the aqueous ethanol solution is 0.5: 100;

[0027] Step S2: Add ethyl orthosilicate to absolute ethanol, stir at a constant speed for 15 minutes, add 10% dilute hydrochloric acid b...

Embodiment 2

[0029] The multi-component composite powder is made by the following steps:

[0030] Step S1, adding aluminum chloride hexahydrate into 15% ethanol aqueous solution by volume fraction, stirring magnetically for 30 minutes, then adding it into a supergravity reactor, stirring at a constant speed of 2000r / min, adding an alcohol solution with a mass fraction of 10% ammonia water, and stirring at a constant speed Stir and react for 5 minutes, take it out, obtain a suspension, filter and wash with absolute ethanol three times, dry, then calcinate at 550°C for 10 hours, and then high-speed ball mill for 10 hours to obtain nanopowder, control aluminum chloride hexahydrate and ethanol The dosage ratio of the aqueous solution is 0.9mol: 1000mL, and the volume ratio of the alcohol solution of ammonia water to the aqueous ethanol solution is 0.5: 100;

[0031] Step S2: Add ethyl orthosilicate to absolute ethanol, stir at a constant speed for 15 minutes, add 10% dilute hydrochloric acid b...

Embodiment 3

[0033] The multi-component composite powder is made by the following steps:

[0034] Step S1, adding aluminum chloride hexahydrate into 15% ethanol aqueous solution by volume fraction, stirring magnetically for 30 minutes, then adding it into a supergravity reactor, stirring at a constant speed of 2000r / min, adding an alcohol solution with a mass fraction of 10% ammonia water, and stirring at a constant speed Stir and react for 5 minutes, take it out, obtain a suspension, filter and wash with absolute ethanol three times, dry, then calcinate at 550°C for 10 hours, and then high-speed ball mill for 10 hours to obtain nanopowder, control aluminum chloride hexahydrate and ethanol The dosage ratio of the aqueous solution is 1mol: 1000mL, and the volume ratio of the alcohol solution of ammonia water to the aqueous ethanol solution is 0.6: 100;

[0035] Step S2: Add ethyl orthosilicate to absolute ethanol, stir at a constant speed for 15 minutes, add 10% dilute hydrochloric acid by ...

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Abstract

The invention relates to an oil-stain-resistant coating for melamine tableware and a preparation method of the oil-stain-resistant coating. The coating comprises a component A and a component B. The component A is prepared from, by weight, 100-110 parts of polyurethane, 4-8 parts of amino-terminated polymer, 75-100 parts of ethyl acetate and 15-25 parts of multi-component composite powder. The component B is a curing agent; performing plasma cleaning on the outer surface of the melamine tableware, and treating the outer surface of the melamine tableware; adding polyurethane and an amino-terminated polymer into ethyl acetate, stirring at a constant speed at room temperature, adding multi-component composite powder, then adding a curing agent to form a primary material, coating the outer surface of the treated melamine tableware with the primary material, and curing to form an oil-stain-resistant coating; the outer surface of the melamine tableware is firstly cleaned and then subjected to plasma cleaning, and the outer surface of the melamine tableware is coated with the amino-terminated polymer, so that the surface energy of polyurethane can be reduced, the polyurethane has excellent dynamic desorption performance on liquid, and the coating is endowed with excellent oil stain resistance.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of polymer materials, and in particular relates to an anti-oil coating for melamine tableware and a preparation method thereof. Background technique [0002] Melamine tableware belongs to high-molecular polymers, and its monomers are formaldehyde and melamine; so far, there are many studies on the design and preparation of anti-fouling and self-cleaning surfaces of melamine tableware, but most of the functional surfaces are devoted to water droplets. Pollution protection and self-cleaning effect. In comparison, the adhesion and pollution of low surface tension liquids represented by various oils on the surface have a greater impact, and surface cleaning is more difficult. During cleaning, oil stains on the outer surface of melamine tableware will cause inconvenience in tableware cleaning. , easy to fall off, causing damage to melamine tableware. [0003] At present, fluoride materials ...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D183/08C09D7/61C09D7/62
CPCC09D175/04C09D7/61C09D7/62C08K2201/011C08K2003/2227C08L2201/10C08L83/08C08K3/22C08K9/06C08K9/08C08K3/36
Inventor 陆兴祥王娟陆兴河
Owner 安徽京尚美密胺制品有限公司
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