Anti-ultraviolet unidirectional-moisture-permeable fiber composite and preparing method thereof

A composite fiber, unidirectional moisture-conducting technology, applied in the direction of artificial filament made of cellulose derivatives, fiber type, fiber processing, etc., can solve the problems of complex material composition and structure, consumption of raw materials, and cumbersome preparation process, etc. To achieve the effect of good unidirectional moisture and anti-ultraviolet function, broad application prospect and simple preparation process

Inactive Publication Date: 2019-02-12
SHANGHAI UNIV OF ENG SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, a lot of research has been done at home and abroad on the preparation and application of unidirectional water-conducting functional micro-nano composite fiber materials. The related patented technologies include: a composite membrane that can regulate the one-way permeation range of liquid and its preparation method (CN105664730A) : A layer of lyophobic electrospun fiber membrane is attached to a lyophilic copper hydroxide mesh layer; a preparation method (CN107059251A) of a unidirectional moisture-guiding nanofiber multilayer composite membrane with a wetting gradient: including hydrophobic A polymer layer, a hydrophilic polymer layer, and a flow-conducting layer prepared by blending a hydrophobic polymer and a hydrophilic polymer between the two, and the hydrophilic polymer layer is made of a hydrophilic polymer Composite material layer formed with hydrophilic nanomaterials, the preparation process is cumbersome, the material composition and structure are complex, more raw materials are consumed, and the preparation cost is higher

Method used

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  • Anti-ultraviolet unidirectional-moisture-permeable fiber composite and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of polypropylene fiber membrane: the hydrophobic polymer polypropylene particles are heated and melted, and melt electrospinning is performed to obtain a polypropylene fiber membrane. The feed rate is 15g / h, the heating temperature is 300°C, the voltage applied to the receiving device is -30kV through a high-voltage DC power supply, and the receiving distance is set to 15cm. The diameter of the obtained polypropylene fiber is 5-8μm, and the thickness of the polypropylene fiber film is 0.4mm.

[0035] (2) Preparation of UV-resistant hydrophilic spinning solution: disperse the UV-shielding agent UV531 in acetone, magnetically stir, and ultrasonically disperse the particles uniformly to prepare UV531 dispersion A1 with a mass fraction of 0.1 wt%. The hydrophilic polymer cellulose acetate was dissolved in an acetone / N-methylpyrrolidone mixed solvent with a volume ratio of 7:3 to obtain a cellulose acetate spinning solution A2 with a mass fraction of 10 wt%. ...

Embodiment 2

[0041] (1) Preparation of polypropylene fiber membrane: Same as step (1) of Example 1, except that the heating temperature is 350°C, the applied voltage at the receiving device is -15kV through a high-voltage DC power supply, and the receiving distance is set to 20cm. The diameter of the obtained polypropylene fiber is 2-8 μm, and the thickness of the polypropylene fiber film is 0.5 mm.

[0042] (2) Preparation of anti-ultraviolet hydrophilic layer spinning solution: with the step (2) of embodiment 1, the difference is that the ultraviolet shielding agent UV531 is dispersed in N, and the mass fraction obtained in N-dimethylacetamide is 0.5 wt% UV531 dispersion A1. The hydrophilic polymer polyamide was dissolved in N,N-dimethylacetamide to obtain a polyamide spinning solution A2 with a mass fraction of 20 wt%.

[0043] (3) Preparation of composite fiber membrane: same as step (3) of Example 1, the difference is that the electrospinning parameters are: the spinning voltage is 1...

Embodiment 3

[0048] (1) Preparation of polypropylene fiber membrane: Same as step (1) of Example 1, except that the heating temperature is 400°C, the voltage applied at the receiving device by a high-voltage DC power supply is -50kV, and the receiving distance is set to 10cm. The diameter of the obtained polypropylene fiber is 1-10 μm, and the thickness of the polypropylene fiber film is 0.6 mm.

[0049] (2) Preparation of anti-ultraviolet hydrophilic layer spinning solution: with step (2) of embodiment 1, the difference is that the ultraviolet shielding agent UV531 is dispersed in N, and the mass fraction obtained in N-dimethylformamide is 0.1 wt% UV531 dispersion A1. The hydrophilic polymer polyamide was dissolved in N,N-dimethylformamide to obtain a polyamide spinning solution A2 with a mass fraction of 10 wt%.

[0050] (3) Preparation of composite fiber membrane: same as step (3) of Example 1, the difference is that the electrospinning parameters are: the spinning voltage is 30kV, the...

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Abstract

The invention belongs to the field of functional micro-nano fiber composites, and particularly relates to an anti-ultravoilet unidirectional-moisture-permeable fiber composite and a preparing method thereof. The fiber composite comprises a polypropylene layer and a hydrophilic polymer and ultraviolet absorber mixture layer which are integrally combined. Polydopamine deposits on and adheres to thesurfaces and the interiors of the polypropylene layer and the hydrophilic polymer and ultraviolet absorber mixture layer. The preparing method includes the steps of dissolving an ultraviolet absorberand a hydrophilic polymer in an organic solvent to form a spinning solution, conducting static spinning and then hot-pressing treatment with a melt static spinning polypropylene fiber material as thereceiving substrate, and placing the material in a Tris-HCl buffer solution with dissolved dopamine for impregnation modification to prepare the anti-ultravoilet unidirectional-moisture-permeable fiber composite. The material has good unidirectional moisture-permeable and anti-ultraviolet functions and is stable in integration structure, simple in composition and structure, simple in preparing process and wide in application prospect.

Description

technical field [0001] The invention belongs to the field of functional micro-nano composite fiber materials, and in particular relates to an ultraviolet-resistant unidirectional moisture-wicking composite fiber material and a preparation method thereof. Background technique [0002] The moisture permeability of clothing fabrics is one of the important factors that affect the comfort of clothing. By controlling the flow of water molecules, sweat can be transferred from the inner layer of the fabric to the outer surface, but the external water molecules cannot penetrate into the inner layer of the fabric, improving the comfort of clothing. comfortability. Clothing fabrics formed of inner and outer layers with different hygroscopic properties have good unidirectional moisture transfer properties, that is, the inner layer is hydrophobic and the outer layer is hydrophilic. Under the action of differential capillary effect, sweat is adsorbed to the outer layer of the fabric and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4374D04H1/4258D04H1/44D04H1/544D04H1/728D01F2/28D01F1/10D06M15/37D06M101/06D06M101/20
CPCD01F1/106D01F2/28D04H1/4258D04H1/4374D04H1/44D04H1/544D04H1/728D06M15/37D06M2101/08D06M2101/20
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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