Super-hydrophobic water-proof moisture-permeable nanometer fiber material and preparation method thereof

A nanofiber, super-hydrophobic technology, applied in fiber processing, conjugated synthetic polymer rayon, non-woven fabrics, etc., can solve the problem of not taking into account the moisture permeability, high porosity, and unable to meet the practical application needs in the field of outdoor and protection and other problems, to achieve the effect of increasing moisture permeability, reducing losses, and improving waterproof performance.

Inactive Publication Date: 2019-04-16
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the fiber membrane prepared by the prior art has structural advantages such as small fiber diameter, small pore size between fibers, and high porosity, it only improves hydrophobicity without taking into account moisture permeability, and cannot meet the actual application requirements in outdoor and protection fields.

Method used

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  • Super-hydrophobic water-proof moisture-permeable nanometer fiber material and preparation method thereof
  • Super-hydrophobic water-proof moisture-permeable nanometer fiber material and preparation method thereof
  • Super-hydrophobic water-proof moisture-permeable nanometer fiber material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of Octadecyltrichlorosilane Modified Silica (OTS-SiO 2 ) nanoparticles

[0036] 1g SiO 2 Nanoparticles were mixed with 100mL of absolute ethanol, and after ultrasonic treatment for 1h, stirred at 400rpm and room temperature for 30min to obtain uniform SiO 2 ethanol dispersion;

[0037] Mix 2mL of octadecyltrichlorosilane (OTS) with 8mL of absolute ethanol to obtain a mixed solution of octadecyltrichlorosilane and ethanol;

[0038] to SiO 2 Add a mixed solution of octadecyltrichlorosilane and ethanol to the ethanol dispersion, continue to react at 50°C for 24h, centrifuge and wash with absolute ethanol three times, and dry in a vacuum oven at 80°C for 24h to obtain octadecyltrichlorosilane modified Silica nanoparticles, the FTIR image is as follows figure 1 Shown, octadecyltrichlorosilane modified silica particles at 781cm -1 、1080cm -1 SiO 2 Si-O-Si and Si-O stretching vibration peaks at 1467cm -1 、2847cm -1 、2909cm -1 A new absorption peak ap...

Embodiment 2

[0047] (1) Preparation of octadecyltrichlorosilane modified silica nanoparticles: the process is the same as in Example 1 step (1), and the FTIR characteristic peaks of octadecyltrichlorosilane modified silica nanoparticles are the same as in Example 1.

[0048] (2) Preparation of spinning solution: the process is the same as step (2) of Example 1, the difference is that polystyrene and polyurethane with a mass ratio of 4:1 are added to N,N-dimethylformamide (DMF) solvent , a polystyrene / polyurethane (PS / PU) solution with a concentration of 10 wt % was obtained.

[0049] Disperse octadecyltrichlorosilane modified silica nanoparticles in N,N-dimethylformamide (DMF) to obtain a 10wt% concentration of octadecyltrichlorosilane modified silica dispersion .

[0050] (3) Preparation of waterproof and moisture-permeable fiber membrane by electrospinning: the process is the same as step (3) of Example 1.

Embodiment 3

[0053] (1) Preparation of octadecyltrichlorosilane modified silica nanoparticles: the process is the same as in Example 1 step (1), and the FTIR characteristic peaks of octadecyltrichlorosilane modified silica nanoparticles are the same as in Example 1.

[0054] (2) Preparation of spinning solution: the process is the same as step (2) of Example 1, the difference is that polystyrene and polyurethane with a mass ratio of 4:1 are added to N,N-dimethylformamide (DMF) solvent , magnetically stirred for 5 h to obtain a polystyrene / polyurethane (PS / PU) solution with a concentration of 20 wt %.

[0055] Octadecyltrichlorosilane-modified silica nanoparticles were dispersed in N,N-dimethylformamide (DMF) to obtain a 15wt% concentration of octadecyltrichlorosilane-modified silica dispersion .

[0056] (3) Preparation of waterproof and moisture-permeable fiber membrane by electrospinning: the process is the same as step (3) of Example 1.

[0057] Prepared PS / PU / OTS-SiO 2 The SEM imag...

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Abstract

The invention belongs to the field of high polymer materials, and particularly relates to a super-hydrophobic water-proof moisture-permeable nanometer fiber material and a preparation method thereof.The super-hydrophobic water-proof moisture-permeable nanometer fiber material is prepared from super-hydrophobic electrospinning nanometer fibers of a three-dimensional through porous structure through mutually staggered arrangement, wherein the super-hydrophobic electrospinning nanometer fibers are a blend of polystyrene, polyurethane and a hydrophobe modified silicon dioxide. The preparation method comprises the steps that the polystyrene, the polyurethane and the hydrophobe modified silicon dioxide are uniformly dispersed into an organic solvent to form a spinning solution, and preparationis conducted through electrospinning. The fiber film is small in diameter, interfiber pores are small, the porosity is high, the moisture permeable flux is high, the water-proof performance is improved, the moisture permeable performance is improved, and the super-hydrophobic water-proof moisture-permeable nanometer fiber material has wide application prospects in the outdoor and protective fields.

Description

technical field [0001] The application belongs to the field of polymer materials, and in particular relates to a superhydrophobic and waterproof moisture-permeable nanofiber material and a preparation method thereof. Background technique [0002] Superhydrophobic materials have attracted widespread academic and industrial attention due to their unique water-repellent surfaces (contact angle >150°), and their potential applications in self-cleaning, antifreeze, anti-corrosion, outdoor tents, and protective clothing are of great value. However, most superhydrophobic materials only have water-repelling function, but have low hydrostatic pressure resistance and are not conducive to sweat vapor transfer. Therefore, the application of this type of material in the field of outdoor and protection is limited. Products in the field of outdoor and protection require materials that can timely discharge sweat vapor generated by the human body due to strenuous exercise while preventing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4382D04H1/4358D01D5/00D01F8/10D01F1/10
CPCD01D5/003D01F1/10D01F8/10D04H1/4358D04H1/4382D10B2321/121D10B2401/021
Inventor 辛斌杰肖雅倩陈卓明刘岩郑元生林兰天何姗许晋豪孟娜
Owner SHANGHAI UNIV OF ENG SCI
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