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Preparation method and use of biomass-based superhydrophobic coating with durability and color diversity

A technology of super-hydrophobic coating and color coating, applied in coating, multi-color effect coatings, etc., can solve the problems of cumbersome manufacturing process, unfavorable large-scale production, etc., and achieve the effect of good mechanical properties

Active Publication Date: 2022-04-29
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the manufacturing process is cumbersome, which is not conducive to mass production

Method used

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  • Preparation method and use of biomass-based superhydrophobic coating with durability and color diversity
  • Preparation method and use of biomass-based superhydrophobic coating with durability and color diversity
  • Preparation method and use of biomass-based superhydrophobic coating with durability and color diversity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] The preparation of embodiment 1 colored coating liquid and colored superhydrophobic coating

[0082] Usually, 0.6g, 0.4g, 0.3g and 0.7g of cellulose, chitosan, zeolite and PTFE were weighed and dispersed into a mixed solution of 30mL absolute ethanol and 5mL acetic acid. Then, a certain dye was added to the above solution, and stirred at 60° C. for 6 h to obtain a colored suspension. After that, 800 μL of FAS was added dropwise to the above solution, and stirred for 2 hours. Then, 2 mL of AS was added dropwise and stirred continuously for 3 h to obtain a colored coating solution. Different substrates such as glass, aluminum sheet, ceramic tile and wood were coated by spraying the colored coating liquid (2 mL) using a spray gun from a distance of 10 cm in the vertical direction. Cotton fabrics can be dipped into the color suspension. Finally, the colored coating was obtained by heating the coating material in an oven at 80 °C for 5 h, followed by drying at 110 °C for 30...

Embodiment 2

[0086] Research and characterization of embodiment 2 colored superhydrophobic coating

[0087] According to the method of Example 1, by changing the total mass of the dyes while keeping the mass ratio constant, a series of coatings with color gradients can be obtained. For example, by keeping the mass ratios as 1:0 (RhB, point A), 1:0 (MB, point C), 1:1 (MB:MO, point F), 1:4 (MO:RhB, point I) Four color gradients of pink, blue, green and red can be obtained ( Figure 4 ).

[0088] Unlike other literatures in which colors are generated by the interaction of particles with light waves, or by femtosecond electroplating on special metal surfaces, the color of our coatings is obtained by simple physisorption and is not limited by the materials used . In other words, the dyes in the solvent can be adsorbed on the surface of porous materials by directly using micro-nano particles such as zeolite as adsorbents. Different colors can be obtained by absorbing different dyes. It is w...

Embodiment 3

[0112] The preparation of embodiment 3 coating solution and superhydrophobic coating

[0113] Others are the same as in Example 1, and the components of the superhydrophobic coating are studied. The difference is that dyes are not included, and the preparation method does not include the process of preparing dyes into suspensions.

[0114] During the fabrication of the superhydrophobic coating, multilevel roughness structuring and polyfluorination methods were employed. Micro-nanoparticles of cellulose, chitosan, zeolite, and PTFE with micro / nano sizes of 25 μm, 400-800 nm, 10 μm, and 100 nm were used to construct hierarchical rough structures; mixing to remove certain components was tested. For example, to remove a certain component under the condition of the optimal ratio (cellulose / chitosan / zeolite / PTFE / FAS / AS─0.6g / 0.4g / 0.3g / 0.7g / 800μL / 2mL), the results are shown in the table 2.

[0115] Table 2 Exploration of different components.

[0116]

[0117] It can be seen fr...

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Abstract

The invention belongs to the field of coatings. It relates to the preparation method and application of a biomass-based super-hydrophobic coating, especially to a preparation method and application of a biomass-based super-hydrophobic coating with color diversity and excellent durability. In a mixed solution of water ethanol and acetic acid; the micro-nano particles are three or four kinds of cellulose, chitosan, zeolite and PTFE; dyes are added to the above solution, and stirred at 40-80°C for 5 ‑8h to obtain a colored suspension; FAS was added dropwise to the above solution and stirred for 1‑3 hours; AS was added dropwise and continuously stirred for 2‑4h to finally obtain a colored coating solution. The present invention utilizes the biomass material to obtain multi-colored and mechanically good colored super-hydrophobic coatings through a simple method, and endows the super-hydrophobic coating with a variety of colors. It can also be dipped, sprayed or used as Paints to paint and more.

Description

technical field [0001] The invention belongs to the field of coatings. It relates to a preparation method and application of a biomass-based super-hydrophobic coating, in particular to a preparation method and application of a biomass-based super-hydrophobic coating with color diversity and excellent durability. Background technique [0002] Colored superhydrophobic materials have attracted extensive attention due to their potential in the field of decoration in pursuit of aesthetics, but there are few studies on the preparation of colored superhydrophobic materials. [0003] Wang et al [F.Wang, X.Zhang, L.Zhang, M.Cao, Y.Lin, J.Zhu, Rapid fabrication of angle-independent structurally colored films with a superhydrophobic property, Dyes and Pigments 130(2016) 202-208] By spraying monodispersed SiO 2 Nanospheres and polydimethylsiloxane solutions prepared angle-independent structured colorful superhydrophobic films. can be changed by changing the SiO 2 The size of the nan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/08C09D7/65C09D7/61C09D5/29C09D7/41
CPCC09D183/08C09D7/65C09D7/61C09D5/29C09D7/41C08L27/18C08L1/02C08L5/08C08K7/26C08K5/0041
Inventor 李学林任金瓶刘利彬陶芙蓉班青盖利刚
Owner QILU UNIV OF TECH
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