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Highly-waterproof highly-breathable nanofiber membrane and preparation method thereof

A nanofiber membrane and nanofiber technology, applied in the direction of fiber type, fiber treatment, wear-resistant fiber, etc., can solve the problems of poor strength of nanofiber membrane, unsatisfactory waterproof and breathable performance, etc., achieve good hydrophobicity and improve application defects , the effect of stable performance

Pending Publication Date: 2019-09-20
江苏三丰特种材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the present invention provides a highly waterproof and highly breathable nanofiber membrane and its preparation method. Aiming at the deficiencies in the prior art, three layers of different nanofiber membranes are used for synergistic cooperation, and on the basis of increasing the strength , optimize its waterproof performance and improve the one-way moisture-conducting and breathable performance, which solves the problems of poor strength and unsatisfactory waterproof and breathable performance of the existing nanofiber membrane

Method used

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  • Highly-waterproof highly-breathable nanofiber membrane and preparation method thereof

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Effect test

Embodiment 1

[0023] A highly waterproof and highly breathable nanofiber membrane adopts a three-layer composite sandwich structure, including PVB electrospun membrane 1, PVDF electrospun membrane 2, and FPU electrospun membrane 3, which are laminated sequentially from the inside to the outside. The PVB electrospun membrane 1 is formed by interweaving polyvinyl butyral nanofibers. The PVDF electrospun membrane 2 is formed by interweaving polyvinylidene fluoride nanofibers. The FPU electrospun membrane 3 is interwoven with fluorosilane-modified polyurethane nanofibers.

[0024] The preparation method of this highly waterproof and highly breathable nanofiber membrane comprises the following steps:

[0025] Step 1, prepare PVB electrospun film 1; Weigh a certain quality of PVB powder, add absolute ethanol, and prepare a PVB spinning solution with a mass fraction of 6-8%, and fully stir it with a magnetic stirrer to make the PVB powder fully Dissolve; Then prepare PVB electrospun film 1 by sp...

Embodiment 2

[0031] A highly waterproof and highly breathable nanofiber membrane adopts a three-layer composite sandwich structure, including PVB electrospun membrane 1, PVDF electrospun membrane 2, and FPU electrospun membrane 3, which are laminated sequentially from the inside to the outside. The PVB electrospun membrane 1 is formed by interweaving polyvinyl butyral nanofibers. The PVDF electrospun membrane 2 is formed by interweaving polyvinylidene fluoride nanofibers. The FPU electrospun membrane 3 is interwoven with fluorosilane-modified polyurethane nanofibers.

[0032] The preparation method of this highly waterproof and highly breathable nanofiber membrane comprises the following steps:

[0033] Step 1, prepare PVB electrospun film 1; Weigh a certain quality of PVB powder, add absolute ethanol, and prepare a PVB spinning solution with a mass fraction of 6-8%, and fully stir it with a magnetic stirrer to make the PVB powder fully Dissolve; Then prepare PVB electrospun film 1 by sp...

Embodiment 3

[0039] A highly waterproof and highly breathable nanofiber membrane adopts a three-layer composite sandwich structure, including PVB electrospun membrane 1, PVDF electrospun membrane 2, and FPU electrospun membrane 3, which are laminated sequentially from the inside to the outside. The PVB electrospun membrane 1 is formed by interweaving polyvinyl butyral nanofibers. The PVDF electrospun membrane 2 is formed by interweaving polyvinylidene fluoride nanofibers. The FPU electrospun membrane 3 is interwoven with fluorosilane-modified polyurethane nanofibers. In order to better coordinate the three, the thickness of the PVB electrospun membrane 1 is 0.010-0.025mm. The thickness ratio of PVB electrospun membrane 1 to FPU electrospun membrane 3 is 1:(1.2-1.6). In order to improve the wear resistance of the surface of the FPU electrospun membrane 3 and improve the hydrophobicity of the FPU electrospun membrane 3 , the surface of the FPU electrospun membrane 3 is coated with a silico...

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Abstract

The invention discloses a highly-waterproof highly-breathable nanofiber membrane and a preparation method thereof. The highly-waterproof highly-breathable nanofiber membrane comprises a PVB electrospun membrane, a PVDF electrospun membrane and a FPU electrospun membrane which are stacked and composited from inside to outside, the PVB electrospun membrane is formed by interweaving polyvinyl butyral nanofiber of 150-400nm in average diameter, the PVDF electrospun membrane is formed by interweaving polyvinylidene fluoride nanofiber of 400-600nm in average diameter, and the FPU electrospun membrane is formed by interweaving fluorosilane modified polyurethane nanofiber of 200-300nm in diameter. The preparation method is simple and reasonable in process and low in manufacturing cost, and the highly-waterproof highly-breathable nanofiber membrane prepared by the method is high in strength, waterproofness and one-way breathability.

Description

technical field [0001] The invention relates to the field of nanofiber membranes, in particular to a highly waterproof and highly breathable nanofiber membrane and a preparation method thereof. Background technique [0002] Waterproof and breathable fabric means that during use, water cannot penetrate the fabric under a certain pressure, but the emitted liquid, especially water vapor, can pass through the fabric smoothly. Fabrics with waterproof and breathable functions are widely used in daily life, such as tents, sleeping bags, jackets, shoes, down jackets, etc., and are getting more and more attention in some special fields, such as military uniforms and protective clothing in the military. And as a protective material for precision instruments, etc. Compared with the function of ordinary fabrics to keep warm and keep out the cold, waterproof and breathable materials should have many functions such as waterproof, moisture permeability, breathability, insulation, windproo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4374D04H1/728D04H1/4318D04H1/4358D04H1/4326D06M11/79D06M101/38
CPCD04H1/4374D04H1/728D04H1/4318D04H1/4358D04H1/4326D06M11/79D06M2101/38D06M2200/35D06M2200/12
Inventor 姚明陆海霞徐海明曹延龙魏凯
Owner 江苏三丰特种材料科技有限公司
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