Preparation method and application of biomass-based carbon nanosheet/epoxy composite coating

A technology of carbon nanosheets and composite coatings, applied in the direction of epoxy resin coatings, coatings, nano-carbons, etc., can solve the problems of a large number of holes, low corrosion resistance level, poor physical isolation performance of coatings, etc., and achieve fast corrosion speed , Excellent anti-corrosion performance, and the effect of improving the protection performance

Active Publication Date: 2021-03-02
NORTHWEST UNIV(CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of anticorrosion of various pipelines and ships and other surfaces using the existing epoxy coating, the defects of a large number of holes on the surface of the epoxy coating, poor physical isolation performance of the coating, and low corrosion resistance level , and provide a preparation method and application of a biomass-based carbon nanosheet / epoxy composite coating

Method used

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  • Preparation method and application of biomass-based carbon nanosheet/epoxy composite coating
  • Preparation method and application of biomass-based carbon nanosheet/epoxy composite coating
  • Preparation method and application of biomass-based carbon nanosheet/epoxy composite coating

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specific Embodiment approach 1

[0034] Specific embodiment one: the preparation method of a kind of biomass-based carbon nanosheet / epoxy composite coating in this embodiment is completed according to the following steps:

[0035] 1. Pretreatment of biomass powder:

[0036] ①. First, the wheat straw is cleaned, then dried to constant weight, pulverized with a pulverizer, and then sieved to obtain wheat straw powder with a particle size of 75 μm;

[0037] ② Put wheat straw powder with a particle size of 75 μm, deionized water, hydrogen peroxide solution and acetic acid into the reactor, stir evenly, and then seal the reactor; heat the sealed reactor from room temperature to 80°C to 200°C ℃, and then keep warm at 80℃~200℃ for 2h~24h, and cool to room temperature to obtain the reacted wheat straw powder;

[0038] The mass ratio of deionized water, hydrogen peroxide solution, acetic acid and wheat straw powder with a particle size of 75 μm described in step 1.2 is (20~50):(5~20):(1~10):1;

[0039] ③. First, use...

specific Embodiment approach 2

[0057] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: the drying temperature described in step 1 ① is 60°C; in step 1 ①, the wheat straw is first cleaned with distilled water until the distilled water is free of turbidity, and then Dry at 60°C to constant weight, pulverize with a pulverizer, and then sieve with a 200-mesh stainless steel screen to obtain wheat straw powder with a particle size of 75 μm. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0058] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the mass fraction of the hydrogen peroxide solution described in step 1.2 is 5%~20%; the acetic acid described in step 1.2. The mass fraction of the mixture is 5% to 40%; in step 1, the rate of heating the sealed reactor from room temperature to 80°C to 200°C is 1°C / min to 10°C / min. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method and application of a biomass-based carbon nanosheet/epoxy composite coating, and relates to a preparation method and application of an epoxy coating. The invention aims to solve the problems that an existing epoxy coating is used for corrosion prevention of surfaces of various pipelines, ships and the like, a large number of holes exist in the surface of the epoxy coating, the physical isolation performance of the coating is poor, and the corrosion resistance level is low. The method comprises the following steps: 1, pretreating biomass powder; 2, preparing a biomass-based nano carbon sheet; and 3, preparing the biomass-based carbon nanosheet/epoxy composite coating. The biomass-based carbon nanosheet/epoxy composite coating is used for improving the corrosion resistance of petroleum pipelines and ships. The method has the advantages of simplicity in operation, high corrosion speed, good effect, clear boundary, low cost and the like, and ismainly used for improving the corrosion resistance of the anticorrosive paint for petroleum pipelines and ships. According to the invention, the biomass-based carbon nanosheet/epoxy composite coatingcan be obtained.

Description

technical field [0001] The invention relates to a preparation method and application of an epoxy coating. Background technique [0002] Metal corrosion is a serious global problem, which has caused direct losses to the national economy, and it is urgent to develop new and efficient metal protection technologies. Among the many anti-corrosion strategies for materials, the simple, effective and cost-effective method is to use anti-corrosion coatings for protection. In order to improve the holes and defects of traditional anti-corrosion coatings and improve the anti-corrosion performance of coatings, various anti-corrosion coatings based on polymer resins have emerged as the times require. [0003] Use the existing epoxy coating to anti-corrosion the surface of various pipelines and ships. There are a large number of holes on the surface of the epoxy coating. The physical isolation performance of the coating is poor and the corrosion resistance level is low. Therefore, the epo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C01B32/15B05D7/14B05D7/24B05D5/00
CPCC09D163/00C09D5/08C01B32/15B05D7/14B05D7/24B05D5/00C08K3/046
Inventor 马生华王惠王刚崔春婷张贝贝白晋波
Owner NORTHWEST UNIV(CN)
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