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Water-blocking and gas-blocking coating and water-blocking and gas-blocking structure using same

A water-blocking and gas-blocking technology, applied in the field of coatings, can solve the problems of not having water-blocking and/or gas-blocking effects, and achieve the effect of improving the effect of water-blocking and gas-blocking

Inactive Publication Date: 2021-10-19
宣城亨旺新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most polymers do not have good water and / or gas barrier properties

Method used

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  • Water-blocking and gas-blocking coating and water-blocking and gas-blocking structure using same
  • Water-blocking and gas-blocking coating and water-blocking and gas-blocking structure using same

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0051] Graphene with a sheet diameter of 5 μm was prepared and prepared into an aqueous graphene slurry with a solid content of 10%. 0.525g of water-based graphene slurry was added to 300g of water-based polyurethane (Changtai Chemical, WT-040B) with a solid content of 35%, and mixed evenly. Obtain graphene aqueous polyurethane slurry thereby, wherein the solid content of graphene is 0.5%. The graphene water-based polyurethane slurry is coated on the pre-cleaned PET film surface with a No. 4 coating wire bar roll. Dry the wet coating at 70°C to obtain a 2-3 μm thick coating on the surface of the PET film.

experiment example 2

[0053] Graphene with a sheet diameter of 5 μm was prepared and prepared into an aqueous graphene slurry with a solid content of 10%. 1.05g of water-based graphene slurry was added to 300g of water-based polyurethane (Changtai Chemical, WT-040B) with a solid content of 35%, and mixed evenly. Obtain graphene aqueous polyurethane slurry thereby, wherein the solid content of graphene is 1%. The graphene water-based polyurethane slurry is coated on the pre-cleaned PET film surface with a No. 4 coating wire bar roll. Dry the wet coating at 70°C to obtain a 2-3 μm thick coating on the surface of the PET film.

experiment example 3

[0055] Graphene with a sheet diameter of 5 μm was prepared and prepared into an aqueous graphene slurry with a solid content of 10%. 1g of water-based graphene slurry was added to 400g of acrylic resin with a solid content of 50% (Green Light Chemical Technology Development (Beijing) Co., Ltd., MA-6958), and mixed evenly. Obtain graphene water-based acrylic resin slurry thereby, wherein the solid content of graphene is 0.5%. The graphene water-based acrylic resin slurry was coated on the pre-cleaned PET film surface with a No. 4 coating wire bar roll. Dry the wet coating at 70°C to obtain a 2-3 μm thick coating on the surface of the PET film.

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Abstract

An embodiment of the invention provides a water-blocking and gas-blocking coating and a water-blocking and gas-blocking structure using the same. The water-blocking and gas-blocking coating comprises: a polymer having a solid content of 20%-35% and having at least one terminal group selected from a group consisting of -NH, -OH and -COOH; and 1-10 layers of graphene having a solid content of 0.5%-1% and a sheet diameter of 3-10 [mu] m. According to the invention, graphene is added into the coating, so that the problem that the polymer lacks good water-blocking and / or gas-blocking effects can be improved to a certain extent at least, and the water-blocking and gas-blocking effects of the coating can be improved.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a water-blocking and gas-blocking paint and a water-blocking and gas-blocking structure using the same. Background technique [0002] Coatings are used in many fields to provide protection, decoration, anti-fouling, marking, insulation and other functions in a wide range of buildings and parts. A considerable proportion of the composition of coatings is various polymers. For example, the key film-forming substances are often polymers. However, most polymers do not have good water and / or gas barrier properties. However, in many applications, it is hoped to achieve water-blocking and / or gas-blocking effects, but due to various considerations, it is not inclined to use other types of materials such as metals, ceramics, and the like. Contents of the invention [0003] In view of this, the present invention provides a water and gas barrier coating and a water and gas barrier structure usi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D133/04C09D101/28C09D109/08C09D7/61C08J7/04C08J7/048C08L67/02B32B27/06B32B27/36B32B7/12B32B33/00
CPCC09D175/04C09D133/04C09D101/286C09D109/08C09D7/61B32B27/08B32B27/36B32B7/12B32B33/00B32B2255/10B32B2255/26B32B2307/7242B32B2307/7265C08J2367/02C08J2475/04C08J2433/04C08J2401/28C08J2409/08C08K3/042
Inventor 许昌隆
Owner 宣城亨旺新材料有限公司
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