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Low-temperature preparation method of super-hydrophobicity film surface

A technology of super-hydrophobicity and manufacturing method, applied in chemical instruments and methods, addition of water-repellent agents, chemical/biochemical treatment of paper, etc., can solve the problems of poor durability of the hydrophobic layer, and achieve good hydrophobic performance, simple operation and low temperature. Effect

Active Publication Date: 2009-12-23
NANTONG KAILAITE MACHINERY
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  • Claims
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AI Technical Summary

Problems solved by technology

The super-hydrophobic paper formed by these methods is a coating technology that forms a layer of super-hydrophobic coating on the surface of the paper. No matter the wet method or the dry method, there is a phenomenon that the combination of the film and the paper fiber is based on weak physical or molecular Inter-force combination is the main problem, and the durability of the hydrophobic layer is poor

Method used

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  • Low-temperature preparation method of super-hydrophobicity film surface
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  • Low-temperature preparation method of super-hydrophobicity film surface

Examples

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Effect test

Embodiment 1

[0020] Take ordinary filter paper and carry out UV cleaning and activation treatment by 172nm ultraviolet light at room temperature for 20 minutes; then place the filter paper in the atomized acetic acid environment for 60 seconds; then react with atomized hexadecyltrimethoxysilane , the reaction temperature is 60° C., and the reaction time is 60 minutes. The results are shown in Table 1. The highest static water droplet contact angle of the treated filter paper surface reaches 160°, and the visual color of the filter paper surface has no obvious change.

[0021] The above-mentioned filter paper after hydrophobization treatment was placed at the filter port of the suction filtration container, and the experiment of vacuum suction filtration and filtration of oil-water mixture was carried out. The results show that the paper has air permeability; the results of suction filtration of the oil-water mixture show that the water phase can pass through the filter paper under the act...

Embodiment 2

[0028] The same hydrophobic treatment process as in Example 1 was used to treat the surfaces of plain paper, polylactic acid polymer materials, iron sheets, ceramics, glass and frosted glass. The results are shown in Table 3. The treatment method of the present invention can make the surfaces of different substrates hydrophobized at a relatively low temperature, and the contact angle reaches up to 140° at the highest and 106° at the lowest depending on the degree of roughness of the substrate surface.

[0029] table 3

[0030]

[0031]

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Abstract

The invention relates to a low-temperature preparation method of a super-hydrophobicity film surface, comprising the following steps: cleaning and actively processing a base material surface by ultraviolet light in humidity of 10 percent to 60 percent at the temperature of 10 DEG C to 25 DEG C; putting the activated base material in an atomized catalyst environment so as to adsorb the catalyst on the base material; and putting the base material which adsorbs the catalyst into a gasification or atomization state of a siloxane molecular compound with hydrophobic alkyl to react at the temperature of 10 DEG C to 80 DEG C. The base material surface treated by the low-temperature preparation method has good hydrophobicity, can reach above 100 DEG C generally and can reach 160 DEG C ultimately, a processing process has low temperature, different base material surfaces can achieve hydrophobization at lower temperature, the color of the treated base material surface is not obviously changed, and the treated fiber base material can maintain ventilation property. The low-temperature preparation method of a super-hydrophobicity film surface has simple operation and can be used for industrial continuous production.

Description

technical field [0001] The invention relates to a method for preparing a superhydrophobic surface under relatively low temperature conditions. Background technique [0002] Superhydrophobic surface materials have broad application prospects, but the preparation of superhydrophobic surfaces usually requires heating reactions, which limits its application. For example, paper, biomass fibers and other materials used in our daily life are renewable and environmentally friendly materials, but because the surface is composed of molecules containing hydrophilic chemical functional groups, it has no water resistance and no pollution resistance. , and it is difficult to prepare a superhydrophobic surface due to the lack of temperature resistance. Water-resistant paper, which is widely used now, is a synthetic product of hydrophobic polymer materials; due to the reduction of petrochemical raw materials and the carbon dioxide emissions generated by the incineration of such paper after...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/18B01J31/04D21H25/02D21H21/16C09C3/12
Inventor 吴云影
Owner NANTONG KAILAITE MACHINERY
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