Anti-corrosion super-hydrophobic coating and preparing method and application thereof

A super-hydrophobic coating and corrosion-resistant technology, used in anti-corrosion coatings, anti-fouling/underwater coatings, natural rubber coatings, etc. problems, to achieve the effect of improving self-cleaning ability, controllable process and stable performance

CN109354963AInactive Publication Date: 2019-02-19黄艳芬 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-02-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses anti-corrosion super-hydrophobic coating and a preparing method and application thereof. The coating comprises, by weight, 0.8-1.2 parts of SBS resin (a styrene-butadiene-styrene triblock copolymer) produced industrially on a large scale, 0.01-0.15 part of natural rubber, 10-30 parts of a solvent, 0.1-2.0 parts of nanosilicon dioxide sol modified by a silane coupling agentand 2.0-8.0 parts of nanometer titania. The preparing method includes the steps of dissolving the SBS resin and the natural rubber in the solvent to be stirred, and adding the modified silicon dioxidesol and nanometer titanium dioxide to be stirred at a room temperature to prepare the coating. The obtained coating has the contact angle larger than 150 degrees and the rolling angle smaller than 6degrees and still has super hydrophobicity after being soaked in saline (3.5% of NaCl) for 10 days. By synergistically modifying the modified silicon dioxide sol and nanometer titanium dioxide, the multi-scale coarse structure on the surface of the plastic coating has excellent and stable hydrophobicity, has good high temperature resistance, ageing resistance and mechanical performance, and is simple in preparing method and wide in application prospect.
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Description

technical field

[0001] The invention relates to the technical field of paint preparation, and more specifically, to a corrosion-resistant superhydrophobic paint and its preparation method and application. Background technique

[0002] A superhydrophobic self-cleaning surface refers to a surface with a contact angle of more than 150° and a rolling angle of less than 10° with water droplets. Materials with superhydrophobic surfaces have a wide range of practical applications in industrial and agricultural production and daily life, such as anti-corrosion protection on glass surfaces. Fog, self-cleaning building materials, anti-corrosion of underwater buildings and vehicles, anti-fouling of fabrics, oil-water separation, and microfluidic transportation, etc.

[0003] In recent years, with the in-depth research on superhydrophobic coatings, the preparation methods of superhydrophobic biomimetic coatings emerge in endlessly. In addition, the research on the preparation methods of...

Examples

Embodiment 1-9

[0026] A corrosion-resistant super-hydrophobic coating and its preparation method and application, the specific steps comprising:

[0027] S1, the SBS resin, natural rubber and solvent are dissolved in the solvent in a mass ratio of 0.8-1.2 parts: 0.01-0.15 parts, 15-25 parts, and stirred at room temperature to obtain a SBS resin / natural rubber solution;

[0028] Specifically, the solvent is one or more of toluene, xylene, ethyl acetate, butyl acetate, tetrahydrofuran;

[0029] S2, the nano-silica sol (abbreviation: modified nano-silica sol) and nano-titanium dioxide that the silane coupling agent is modified in proportion are added in the SBS resin / natural rubber solution that makes in step S1, at room temperature Stir and serve;

[0030] Specifically, 1.0-2.0 parts of nano-silica sol modified by a silane coupling agent, and 2.0-8.0 parts of nano-titanium dioxide;

[0031] Specifically, the silica sol is a nano-silica sol modified by a silane coupling agent with a solid con...