A kind of wrinkle-resistant high-elastic hemp-cotton composite fiber and its preparation method

A composite fiber, hemp fiber technology, applied in the direction of plant fiber, fiber treatment, improved hand-feeling fiber, etc., can solve the problems of unsatisfactory elasticity, poor flexibility of hemp fiber, poor wrinkle resistance, etc., to achieve soft feel and improve wrinkle resistance. The effect of performance and elasticity

Active Publication Date: 2020-11-24
关会堂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the poor flexibility and poor elasticity of the current hemp fiber, and the uneven compounding, unsatisfactory elasticity, and poor wrinkle resistance of the existing hemp-cotton composite fiber, the present invention proposes a wrinkle-resistant high-elastic hemp-cotton composite fiber and its preparation method, thereby Realized the hemp-cotton composite in the fiber stage of the hemp-cotton composite fiber, and improved the anti-wrinkle performance and elasticity of the hemp-cotton composite fiber

Method used

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Soak and maintain the bleached flax fiber in a softener simethicone emulsion at a temperature of 45°C for 30 hours, so that the softener fully penetrates the hemp fiber, then fish out the hemp fiber, and centrifugally filter it at a speed of 4000rpm Unnecessary softening agent, then dry 4h at 65 ℃, obtain the hemp fiber of pretreatment;

[0033](2) The pretreated hemp fiber is loosely tiled and transported, and the polyurethane liquid is sprayed with a high-pressure spray gun, so that the surface of the hemp fiber is soaked in the polyurethane liquid to obtain a pre-impregnated hemp fiber web; the thickness of the tile is 3mm; the high-pressure spray gun adopts a conventional 1.2MPa The air compressor is used as the pressure supply; the polyurethane liquid is N,N-dimethylacetamide as the polyurethane liquid of the solvent, the mass concentration is 30%, and the dosage is controlled at 3% of the weight of the hemp fiber;

[0034] (3) The cotton fiber is loosely sprea...

Embodiment 2

[0041] (1) Soak and maintain the bleached ramie fiber in the softener amino silicone oil emulsion with a temperature of 40°C for 36 hours, so that the softener can fully penetrate the hemp fiber, then remove the hemp fiber, and centrifugally filter the excess at 3000rpm. softening agent, followed by drying at 60°C for 5h to obtain pretreated hemp fibers;

[0042] (2) The pretreated hemp fiber is loosely laid and transported, and the polyurethane liquid is sprayed with a high-pressure spray gun, so that the surface of the hemp fiber is soaked in the polyurethane liquid to obtain a pre-impregnated hemp fiber web; the thickness of the tile is 2mm; the high-pressure spray gun adopts a conventional 0.8MPa The air compressor is used as the pressure supply; the polyurethane liquid is N,N-dimethylacetamide as the polyurethane liquid of the solvent, the mass concentration is 25%, and the dosage is controlled at 2% of the hemp fiber weight;

[0043] (3) The cotton fiber is loosely sprea...

Embodiment 3

[0048] (1) Soak and maintain the bleached flax fiber in softener simethicone emulsion at a temperature of 50°C for 24-36 hours, so that the softener can fully penetrate the hemp fiber, then remove the hemp fiber and centrifuge at a speed of 5000rpm Filter out excess softener, then dry at 70°C for 3h to obtain pretreated hemp fiber;

[0049] (2) The pretreated hemp fiber is loosely laid and transported, and the polyurethane liquid is sprayed with a high-pressure spray gun, so that the surface of the hemp fiber is soaked in the polyurethane liquid to obtain a pre-impregnated hemp fiber web; the thickness of the tile is 5mm; the high-pressure spray gun adopts a conventional 1.5MPa The air compressor is used as the pressure supply; the polyurethane liquid is N,N-dimethylacetamide as the polyurethane liquid of the solvent, the mass concentration is 35%, and the dosage is controlled at 4% of the hemp fiber weight;

[0050] (3) The cotton fiber is loosely spread and transported, and ...

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Abstract

The invention provides an anti-wrinkle high-elasticity hemp and cotton composite fiber and a preparation method thereof. The hemp and cotton composite fiber is prepared by impregnating polyurethane liquid on the surface of a hemp fiber pretreated by a softening agent into a pre-impregnated hemp fiber net, meanwhile impregnating a NMMO solvent on the surface of a cotton fiber into a pre-impregnatedcotton fiber net, and then continuously laminating a fiber net, kneading cotton, drying and opening to obtain the final product. According to the method provided by the invention, the polyurethane liquid is applied to the surface of the hemp fiber, so that the wrinkle resistance and elasticity of the hemp fiber are improved, the properties of the cotton fiber and the hemp fiber are fully complementary through hemp and cotton compounding in a fiber stage, and the obtained composite fiber is suitable for preparing comfortable and close-fitting textile with high elasticity, air permeability, cooling property and soft handfeel.

Description

technical field [0001] The invention relates to the technical field of composite fibers, in particular to a wrinkle-resistant high-elastic hemp-cotton composite fiber and a preparation method thereof. Background technique [0002] Hemp fiber is a fiber obtained from various hemp plants. Due to its strong moisture absorption and air permeability, hemp fiber has been gradually used in clothing textile fibers in recent years. Especially hemp fiber has fast moisture absorption and moisture dissipation speed, and its fabrics are cool and comfortable to wear in summer. Among the bast fibers, such as ramie and flax, the fibers are not lignified, have high strength and low elongation, and the fabrics made of these hemp fibers absorb sweat, are not close to the body, are breathable, cool, and soft in texture, and are very suitable for summer clothing fabric fibers . [0003] However, the elasticity of hemp fiber is poor, and because it is a rigid fiber, the clothes of hemp fabric a...

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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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4374D04H1/425D06M15/643D06M15/564D06M13/355D06M101/06
CPCD04H1/425D04H1/4374D06M13/355D06M15/564D06M15/643D06M2101/06D06M2200/20D06M2200/50
Inventor 关会堂
Owner 关会堂
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