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A kind of superhydrophobic coating composition

A technology of super-hydrophobic coatings and compositions, applied in coatings, devices for coating liquids on surfaces, etc., can solve the problems of limited use, loss of super-hydrophobic properties, poor wear resistance, etc., and achieve increased wear resistance and durability. excellent superhydrophobicity

Active Publication Date: 2018-03-02
FUJIAN RUISEN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disclosed superhydrophobic coatings are mainly single hydrophobic coatings composed of conventional resins or low surface energy resins combined with hydrophobic particles. This type of hydrophobic coating has poor wear resistance and durability, and its applicability to different substrates is relatively limited.
[0004] Chinese patent CN101143989 discloses a hydrophobic coating composed of an organosilane gel precursor, silicone oil and nanoparticles. The hydrophobic coating can produce a superhydrophobic interface under certain circumstances, but it utilizes a silane gel precursor. The preparation process Complex and high risk, the constructed hydrophobic interface changes with the molecular weight of the gel precursor, the hydrophobicity is unstable, and the adhesion of silicone-based coatings to plastics, glass and other substrates is poor, and its scope of application is limited. limitation
[0005] Chinese patent CN101643622 and Chinese patent CN102453425 disclose a kind of superhydrophobic coating with furfuryl alcohol resin as binder and single hydrophobic particle or micron-sized powder particle as filler. The production process is simple and can play a certain hydrophobic effect, but its hydrophobic Poor performance, poor applicability to various substrates such as plastic and glass
[0006] Chinese patent CN102417773, Chinese patent CN102660182, Chinese patent CN103666173 and Chinese patent CN103642378 disclose four kinds of hydrophobic coatings with fluorine-containing acrylic resin as low surface energy binder and hydrophobic nanoparticles as filler. It has a good super-hydrophobic effect, but its wear resistance is poor. After a short period of wind erosion or friction, it will lose its super-hydrophobic performance. It has poor adhesion to various substrates such as plastics and glass, and its use is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of primer: Dissolve 10 parts of chlorinated polypropylene in 30 parts of ethyl acetate solvent, stir and disperse 3 parts of PP micropowder in the chlorinated polypropylene resin solution at high speed;

[0030] Preparation of topcoat: mix 15 parts of silicon-containing modified fluororesin with 30 parts of ethyl acetate, add 5 parts of hydrophobic nano-silica, stir and disperse at high speed for 30 minutes;

Embodiment 2

[0032] Primer coating preparation: Dissolve 15 parts of chlorinated polypropylene in 45 parts of ethyl acetate solvent, stir and disperse 3 parts of PP micropowder and 4 parts of PET micropowder in the chlorinated polypropylene resin solution at high speed;

[0033] Topcoat preparation: Mix 20 parts of silicon-containing modified fluororesin with 60 parts of ethyl acetate, add 15 parts of hydrophobic nano-titanium dioxide, stir and disperse at high speed for 30 minutes;

Embodiment 3

[0035] Primer preparation: Dissolve 12 parts of chlorinated polypropylene in 45 parts of ethyl acetate solvent, stir and disperse 6 parts of PET micropowder in the chlorinated polypropylene resin solution at high speed;

[0036] Topcoat preparation: Mix 25 parts of silicon-containing modified fluororesin with 70 parts of ethyl acetate, add 10 parts of nano-sized polytetrafluoroethylene micropowder, stir and disperse at high speed for 30 minutes;

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Abstract

The invention discloses such a superhydrophobic coating composition. In order to solve the problems of poor wear resistance, poor adhesion to various substrates such as plastics and glass, and limited use of existing superhydrophobic coatings. The present invention takes primer: its composition includes 10-30 parts of chlorinated polypropylene resin, 3-8 parts of polypropylene micropowder, 30-70 parts of ethyl acetate; top coat: its composition includes 15-30 parts of low surface energy resin, 5‑15 parts hydrophobized nanoparticles, 30‑70 parts ethyl acetate.

Description

technical field [0001] The invention relates to a coating, in particular to a superhydrophobic coating composition composed of a primer and a top coating. Background technique [0002] As an emerging product, superhydrophobic coatings have been continuously sought after in recent years because of their excellent water resistance, antifouling and self-cleaning properties. Superhydrophobic products are widely used in outdoor antennas, steel structure anticorrosion, exterior wall waterproof and antifouling, ships and other fields. It is of great significance to develop a superhydrophobic coating that is superhydrophobic, wear-resistant and durable, and has good adhesion to different substrates. [0003] The disclosed superhydrophobic coatings are mainly single hydrophobic coatings composed of conventional resins or low surface energy resins combined with hydrophobic particles. This type of hydrophobic coating has poor wear resistance and durability, and its applicability to di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D123/28C09D127/12C09D7/61C09D7/65B05D7/24
Inventor 陆志军
Owner FUJIAN RUISEN CHEM