Three-dimensional nanofiber composite membrane and preparation method thereof

A fiber composite and three-dimensional nanotechnology, applied in the field of textile materials, can solve the problems of uniformity and adhesion of fiber membranes, poor mechanical properties of nanofiber membranes, and difficulty in industrialization, and achieve easy industrial production, tight adhesion, and dispersion Good results

Inactive Publication Date: 2012-07-25
昆山汇维新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the method of preparing nanofiber membranes by electrospinning is mainly suitable for polymers that can be solution-spun, this method has great limitations in the selection of materials when preparing nanofibers. In addition, the nanofiber membrane prepared by electrospinning has poor mechanical properties and is not easy to use alone. However, since the nanofiber membrane prepared by electrospinning is composed of continuous long fibers, and its thic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] A preparation method of a three-dimensional nanofiber composite membrane, the preparation method is carried out in the following steps:

[0016] A. The thermoplastic polymer nanofibers and the solvent are emulsified in a mass ratio of 0.5-2:98-99.5 at room temperature through an emulsifier at a speed of 10,000 rpm for 6-10 minutes to obtain a uniform and stable dispersion of nanofiber emulsion; , The thermoplastic polymer nanofibers are polyethylene terephthalate PET nanofibers or polycaprolactam PA6 nanofibers or polypropylene PP nanofibers or polylactic acid PLA or polyethylene glycol PVA and polyethylene PE copolymer PVA- One of the co-PE nanofibers. However, according to different thermoplastic polymer nanofibers, the selected solvent is different. It is a mixture of deionized water and isopropanol or formic acid or acetic acid.

[0017] B. The nanofiber emulsion prepared in step A is coated on the surface of different substrate fabrics by a knife coating process at room...

Example Embodiment

[0019] Example 1

[0020] The nanofibers are polycaprolactam nanofibers, the solvent is a mixture of deionized water and formic acid, the mass fraction of the nanofibers in the mixture is 0.5%, and the base material is a non-woven fabric.

[0021] Add 100 grams of polycaprolactam nanofibers to the mixture of 19900 grams of deionized water and formic acid, and emulsify them with an emulsifier at 10,000 rpm for 10 minutes at room temperature to obtain a uniform and stable dispersion of polycaprolactam nanofibers. The mass ratio of deionized water and formic acid in the mixed solution is 40:60. The emulsified polycaprolactam nanofiber emulsion is surface-coated on the non-woven fabric with a coating thickness of 1mm. After drying, three-dimensional polycaprolactam nanometers can be obtained. Fiber / non-woven composite membrane material.

Example Embodiment

[0022] Example 2

[0023] The nanofibers are polyethylene terephthalate nanofibers, the solvent is a mixture of deionized water and acetic acid, the mass fraction of the nanofibers in the mixture is 1.5%, and the substrate fabric is a woven fabric.

[0024] 150 grams of polyethylene terephthalate nanofibers were added to the mixture of 9850 grams of deionized water and acetic acid, and emulsified by an emulsifier at 10,000 rpm for 9 minutes at room temperature to obtain a uniform and stable dispersion Polyethylene terephthalate nanofiber emulsion, where the mass ratio of deionized water to acetic acid in the mixed solution is 30:70, and the emulsified polyethylene terephthalate nanofiber emulsion is placed on the machine-made fabric Carry out surface coating, the coating thickness is 2mm, and after drying, a three-dimensional polyethylene terephthalate nanofiber / woven fabric composite film material can be obtained.

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Abstract

The invention relates to a three-dimensional nanofiber membrane and a preparation method thereof, belonging to the field of textile materials. The three-dimensional nanofiber composite membrane comprises base material fabric and a surface membrane layer, wherein the surface membrane layer is a thermoplastic polymer nanofiber membrane formed by carrying out surface scrape coating on the base material fabric; and machine-made fabric, knitted fabric or non-woven fabric is adopted as the base material fabric. The three-dimensional nanofiber membrane has the advantages of even thickness, good dispersibility and mechanical property and large specific surface area, and can be widely applied to multiple fields of cleaning materials, biomedicines, sensors, radiation protection and the like. In addition, the preparation method provided by the invention is simple in technology, and industrial production is easy to realize.

Description

technical field [0001] The invention relates to a three-dimensional nanofiber composite film and a preparation method thereof, belonging to the field of textile materials. Background technique [0002] With the rapid development of nanomaterial technology, nanofiber technology has become the frontier and research hotspot of fiber science, and has been applied in electronics, mechanical biomedicine, chemical industry, textile and other industrial fields. The application of nanofiber technology in traditional industries It will certainly enhance traditional industries. Due to its special physical shape and structure, the nanofibrous membrane exhibits special properties in the following aspects: surface effect, small size effect, quantum size effect, and macroscopic quantum positive tunnel effect. This makes nanofibers widely used in clothing, food, medicine, energy, electronics, papermaking, aviation and other fields. In addition, nanofiber membranes can also be used for pur...

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): B32B27/02B32B27/12
Inventor 王栋孙刚黄祖基王凯
Owner 昆山汇维新材料有限公司
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