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Nano superhydrophobic coating additive and its preparation method and application

A technology of super-hydrophobic coatings and additives, applied in the direction of anti-corrosion coatings, fire-resistant coatings, coatings, etc., can solve problems such as difficult promotion and application, high equipment requirements, and high cost, so as to improve hydrophobic performance, simplify the preparation process, and prepare methods simple effect

Active Publication Date: 2021-11-30
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above method has factors such as complex process, high equipment requirements and high cost in the preparation technology, so it is difficult to carry out large-scale promotion and application in practice.

Method used

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  • Nano superhydrophobic coating additive and its preparation method and application
  • Nano superhydrophobic coating additive and its preparation method and application
  • Nano superhydrophobic coating additive and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] A preparation method for nano superhydrophobic paint additive, comprising the following steps:

[0066] Step 1, 10 mg of nanomaterials and 10 mL of solvent are ultrasonically mixed for 8 minutes to obtain solution A, wherein the concentration of nanomaterials in solution A is 1 mg / mL, the nanomaterials are carbon nanotubes, and the solvent is dimethyl sulfoxide;

[0067] Step 2, add catalyst and low surface energy coupling agent to solution A, obtain solution B, use magnetic stirrer to stir solution B for 80min to stir evenly, obtain product C, wherein, catalyst is acetic acid, low surface energy coupling agent is methyltriethoxysilane, the ratio of the mass fraction of the nanomaterial, the volume fraction of the catalyst, and the volume fraction of the low surface energy coupling agent is 500:0.1:10;

[0068] In step 3, the product C is subjected to solid-liquid separation, and the obtained solid is a nano-superhydrophobic coating additive, and the solid-liquid separa...

Embodiment 2

[0084] A preparation method for nano superhydrophobic paint additive, comprising the following steps:

[0085] Step 1, 100 mg of nanomaterials and 100 mL of solvent are ultrasonically mixed for 10 minutes to obtain solution A, wherein the concentration of nanomaterials in solution A is 1 mg / mL, the nanomaterials are carbon nanotubes, and the solvent is dimethyl sulfoxide;

[0086] Step 2, add catalyst and low surface energy coupling agent to solution A, obtain solution B, use magnetic stirrer to stir solution B for 80min until stirring evenly, obtain product C, wherein, catalyst is hydrochloric acid, low surface energy coupling agent is methyltrichlorosilane, the ratio of the mass fraction of the nanomaterial, the volume fraction of the catalyst, and the volume fraction of the low surface energy coupling agent is 500:0.5:10;

[0087] In step 3, the product C is subjected to solid-liquid separation, and the obtained solid is a nano-superhydrophobic coating additive, and the sol...

Embodiment 3

[0092] A preparation method for nano superhydrophobic paint additive, comprising the following steps:

[0093] Step 1, 10 mg of nanomaterials and 10 mL of solvent are ultrasonically mixed for 8 minutes to obtain solution A, wherein the concentration of nanomaterials in solution A is 1 mg / mL, and the nanomaterials are SiO 2 , the solvent is xylene;

[0094] Step 2, add catalyst and low surface energy coupling agent to solution A, obtain solution B, use magnetic stirrer to stir solution B for 80min until stirring evenly, obtain product C, wherein, catalyst is hydrochloric acid, low surface energy coupling agent It is dodecyltrimethoxysilane, and the ratio of the mass fraction of the nanomaterial, the volume fraction of the catalyst, and the volume fraction of the low surface energy coupling agent is 500:1:10;

[0095] In step 3, the product C is subjected to solid-liquid separation, and the obtained solid is a nano-superhydrophobic coating additive, and the solid-liquid separat...

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Abstract

The invention discloses a nanometer superhydrophobic coating additive and its preparation method and application. The preparation method of the nanometer superhydrophobic coating additive comprises the following steps: uniformly mixing a nanometer material with a solvent to obtain a solution A, adding a catalyst to the solution A and a low surface energy coupling agent to obtain a solution B, and stir the solution B evenly to obtain a product C, and perform solid-liquid separation on the product C to obtain a solid that is a nano-superhydrophobic coating additive. The significant difference between the present invention and the traditional preparation of hydrophobic coatings is that the preparation of nano-superhydrophobic coating additives does not require the relatively complicated process of constructing micro-nano structured surfaces, but starts with the idea of ​​chemically modifying the surface of nano-materials and directly uses nano-materials The active groups on the surface carry out organic covalent chemical modification to prepare nano-superhydrophobic coating additives, which greatly simplifies the preparation process of superhydrophobic surface.

Description

technical field [0001] The invention belongs to the technical field of superhydrophobic materials, and in particular relates to a nanometer superhydrophobic coating additive and its preparation method and application. Background technique [0002] The research on superhydrophobic surface originates from the self-cleaning effect of lotus leaf surface. Superhydrophobic surface generally refers to the surface with a contact angle of more than 150° with water and a surface with a rolling angle of less than 10°. Corrosion, oil-water separation, microfluidic devices, underwater drag reduction and other fields have broad application prospects. [0003] There are generally two ways to prepare superhydrophobic materials: one is to directly construct micro-nano structures on low-energy surfaces; the other is to construct micro-nano structures on solid surfaces and then perform low surface energy modification. [0004] So far, the methods for preparing superhydrophobic surfaces mainl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/08C09D7/62
CPCC08K3/36C08K9/06C08K2003/2241C08K2201/011C09D5/08C09D5/18C08K3/041C09D7/62
Inventor 王成张宪楠
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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