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Multifunctional fabric capable of shielding ultraviolet rays and having lasting superhydrophobic performance and preparation method thereof

An ultraviolet and super-hydrophobic technology, applied in textiles, papermaking, fiber processing, etc., can solve the problem of inability to obtain super-hydrophobic properties, and achieve the effects of durable super-hydrophobicity, low cost, and simple preparation method.

Inactive Publication Date: 2012-02-15
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in practical applications, TiO 2 , ZnO and other nanoparticles have certain disadvantages, that is, their photosensitivity, under the irradiation of ultraviolet light, they are easy to decompose the hydrophobic treatment layer on the surface, which leads to the transformation from hydrophobic to hydrophilic, and cannot obtain long-term , stable superhydrophobic properties

Method used

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  • Multifunctional fabric capable of shielding ultraviolet rays and having lasting superhydrophobic performance and preparation method thereof
  • Multifunctional fabric capable of shielding ultraviolet rays and having lasting superhydrophobic performance and preparation method thereof
  • Multifunctional fabric capable of shielding ultraviolet rays and having lasting superhydrophobic performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Step 1: soak the cleaned fabric in the sol of ZnO nanoparticles prepared by sol-gel method for 1 hour, take it out and put it into a reaction kettle with 1 mmol / L of zinc acetate solution after drying, 80 ℃ for 1 hour, after the reaction is complete, the sample is taken out, washed, and dried at 20 ℃ for later use. The obtained fabric is modified with ZnO nanoparticles.

[0018] Zinc acetate can be replaced with zinc nitrate, zinc chloride, zinc sulfate, zinc acetylacetonate, etc.

[0019] Step 2: immerse the fabric prepared in step 1 in the PEI polyelectrolyte solution, soak for 5 minutes, take it out and then immerse it in a 0.1 mmol / L sodium silicate solution, soak for 5 minutes, wash it after taking it out, dry it, Obtain ZnO nanoparticles coated with SiO 2 monolayer fabric.

[0020] Sodium silicate can be replaced by tetraethyl orthosilicate, 3-aminopropyltriethoxysilane, etc., and PEI can be replaced by PDDA.

[0021] Step 3: Put the fabric prepared in step 2 ...

Embodiment 2

[0025] Step 1: change the soaking time of the sol in Example 1 into 12 hours, change the concentration of zinc acetate into 50 mmol / liter, change the reaction temperature into 100°C, change the reaction time into 12 hours, and change all the other reaction processes and conditions into constant, A fabric modified with ZnO nanoparticles with increased size and distribution density of ZnO nanoparticles is obtained.

[0026] Step 2: Repeat the reaction operation 10 times on the basis of Example 1, that is, perform 10 alternate depositions of PEI and sodium silicate to obtain multilayer SiO 2 Particle layer coated ZnO nanoparticles modified fabric.

[0027] Step 3: Change the reaction temperature in Example 1 to 120°C, change the reaction time to 2 hours, and keep the rest of the reaction process and conditions unchanged to obtain a hydrophobic functionalized fabric

[0028] Step 4: Carry out the transmittance spectrum test to the fabric with an ultraviolet-visible absorption spe...

Embodiment 3

[0030]Step 1: change the soaking time of the sol in Example 1 into 24 hours, change the concentration of zinc acetate into 0.5 mol / liter, change the reaction temperature into 150°C, change the reaction time into 24 hours, and change the remaining reaction process and conditions to obtain ZnO nanoparticle modified fabric with further increased ZnO nanoparticle size and distribution density.

[0031] Step 2: Replace the concentration of sodium silicate in Example 1 with 100 mmol / L, replace the soaking time with 12 hours, and keep the rest of the reaction process and conditions unchanged to obtain dense SiO coated on the surface of ZnO nanoparticles 2 monolayer fabric.

[0032] Step 3: Change the reaction temperature in Example 1 to 150° C., change the reaction time to 3 hours, and keep the rest of the reaction process and conditions unchanged to obtain a hydrophobic functionalized fabric.

[0033] Step 4: The transmission spectrum test of the fabric is carried out with an ultra...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

The invention relates to a multifunctional fabric capable of shielding ultraviolet rays and having lasting superhydrophobic performance and a preparation method thereof, belonging to the technical field of functional textile materials. According to the invention, the surface of the fabric is modified with an inorganic nanometer particle coating; then, the inorganic nanometer particle coating is cladded by an inert oxide barrier layer; finally, the fabric is subjected to functional modification of surface hydrophobization. Since the inert oxide barrier layer has an inhibiting effect on photosensitivity of inorganic nanometer particles, a manufactured textile material presents lasting superhydrophobic performance under strong ultraviolet irradiation for a long time, and the ultraviolet ray shielding index of the manufactured fabric is greater than 100. The prepared multifunctional fabric capable of shielding ultraviolet rays and having lasting superhydrophobic performance is applicable to a variety of fields, e.g. medical science, military, biology and the optoelectronics industry.

Description

technical field [0001] The invention belongs to the technical field of functional textile materials, and relates to a multifunctional fabric with ultraviolet shielding and durable superhydrophobic properties and a preparation method thereof. Background technique [0002] With the continuous deterioration of the earth's environment, the ultraviolet content in sunlight is increasing. Considering the increasing ultraviolet damage and people's special needs for ultraviolet protection and waterproof functions in some fields, a UV shielding and waterproof performance The multifunctional fabric will have important application value in real life. [0003] Usually, people modify the "UV filter layer" on the surface of the fabric to achieve its UV protection effect. This "filtering" substance mainly includes some organic compounds that can absorb ultraviolet light and inorganic nanoparticles that have strong reflection, scattering and absorption effects on ultraviolet light. Organic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M11/46D06M11/44D06M11/45D06M11/79D06M13/513D06M13/08D06M15/643
Inventor 刘益春王玲玲张昕彤
Owner NORTHEAST NORMAL UNIVERSITY
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