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A kind of preparation method of multifunctional cool polyurethane elastic fiber

A polyurethane elastic and multi-functional technology, applied in the direction of fiber chemical characteristics, rayon manufacturing, single-component synthetic polymer rayon, etc., can solve the problems of spandex coolness retention time, single fabric function, etc., to eliminate skin toxins , Antibacterial effect is obvious, the effect of no equipment investment

Active Publication Date: 2016-04-20
ZHEJIANG HUAFENG SPANDEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The spandex prepared by this method has a short coolness retention time (4-9 months), and the prepared fabric has a single function, which is only suitable for melt-spun spandex.

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

preparation example Construction

[0024] A kind of multifunctional cool polyurethane elastic fiber of the present invention and preparation method comprise the following steps:

[0025] 1) Preparation of special functional additive slurry. Jade powder, mica powder and other additives are added to the solvent, and circulated for 30-50 hours by means of a vertical grinder to obtain a uniformly dispersed functional additive slurry (concentration 30- 40wt%), filtered for subsequent use, wherein jade powder and mica powder account for 0.5% to 4% of silk weight altogether;

[0026] 2) adding diisocyanate, oligomer diol and reaction control agent into the first reactor RA1 to react to obtain -NCO-terminated prepolymer PP;

[0027] 3) The -NCO-terminated prepolymer PP and solvent obtained in step 2 are continuously transported to a high-speed dissolving machine, and under the action of shear force, the prepolymer PP is fully dissolved to obtain a prepolymer solution PPs ;

[0028] 4) The prepolymer solution PPs obta...

Embodiment 1

[0038] ① Use a vertical grinder to add 12.5kg mica powder, 12.5kg jade powder, and 2.0kg lubricating reliever to 73.357kg DMAC solvent and grind together until it passes the 1800-mesh syringe test three times, then add 5kg antioxidant, 7.5kg of ultraviolet absorber and 7.5kg of anti-yellowing agent were ground for 5 hours, then a small amount of stock solution was added and stirred for 3 hours to obtain a uniformly dispersed functional additive slurry with a concentration of 35 wt%.

[0039] ② Stir and react 267.78kg polytetrahydrofuran ether glycol (PTMEG), 62.102kg 4,4-diphenylmethane diisocyanate (MDI) and 0.321kg n-butanol (UB) at 85°C for 120min to obtain a blocked prepolymer ( PP);

[0040] ③Continuously transport the prepolymer (PP) and N,N-dimethylacetamide (DMAC) solvents to the high-speed dissolving machine at a rate of 5kg / h and 6.62kg / h respectively. Fully dissolve the prepolymer to obtain a prepolymer solution (PPs);

[0041] ④The prepolymer solution (PPs), diam...

Embodiment 2

[0045] ① Use a vertical grinder to add 25.0kg mica powder, 25.0kg jade powder, and 2.0kg lubricating and relaxing agent into 119.786kg DMAC solvent and grind together until the 1800-mesh syringe test is passed three times, then add 5kg antioxidant, 7.5kg of ultraviolet absorber and 7.5kg of anti-yellowing agent were ground for 5 hours, then a small amount of stock solution was added and stirred for 3 hours to obtain a uniformly dispersed functional additive slurry with a concentration of 35 wt%.

[0046] ② Stir and react 267.78kg polytetrahydrofuran ether glycol (PTMEG), 62.102kg 4,4-diphenylmethane diisocyanate (MDI) and 0.321kg n-butanol (UB) at 85°C for 120min to obtain a blocked prepolymer ( PP);

[0047] ③Continuously transport the prepolymer (PP) and N,N-dimethylacetamide (DMAC) solvents to the high-speed dissolver at a rate of 5kg / h and 6.819kg / h respectively. Fully dissolve the prepolymer to obtain a prepolymer solution (PPs);

[0048] ④The prepolymer solution (PPs),...

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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Abstract

The invention discloses a preparation method of multifunctional cool polyurethane elastic fiber. The preparation method comprises the specific steps of (1) preparing needed functional additive slurry; (2) obtaining prepolymer PP adopting -NCO to block the end; (3) obtaining prepolymer solution PPs; (4) preparing to obtain polyurethane urea polymer solution Pol; (5) obtaining spinning solution Dope; (6) spinning, accurately measuring, then enabling the spinning solution Dope to pass through a component and a high-temperature spinning channel to obtain primary polyurethane elastic fiber, carrying out pre-drawing by a first roller GR1, feeding oil by an oiling roller OR, drawing by a second roller GR2, finally winding the polyurethane elastic fiber by a winding head on a paper tube to obtain a finished fiber product. The multifunctional cool polyurethane elastic fiber not only has the effects of stable chemical property, electrostatic resistance, bacterial resistance, mildew resistance and the like, but also has health-care performances of promoting blood circulation, enhancing metabolism and repairing damaged skin and the like, and is natural cool fiber in the real sense.

Description

technical field [0001] The invention relates to a multifunctional cool polyurethane elastic fiber and a preparation method thereof, belonging to the technical field of polymer material preparation. The polyurethane elastic fiber prepared by the invention not only has the functions of stable chemical properties, antistatic, antibacterial and mildew resistance, but also can promote blood circulation, strengthen metabolism, repair damaged skin and other health care properties, and is a real natural cooling fiber , can greatly improve the coolness and comfort of the fabric in hot summer. Background technique [0002] With the growth of the social economy and the continuous improvement of the quality of life, people's consumption concepts and consumption psychology are becoming more and more mature. They are no longer simply satisfied with the basic functions of clothing such as body covering, body protection, and cold protection, but are paying more and more attention to the fun...

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): D01F6/94D01F1/10C08G18/76C08G18/66C08G18/48C08G18/32C08G18/10
Inventor 李燕温作杨梁红军刘亚辉池晓智席青费长书赵婧
Owner ZHEJIANG HUAFENG SPANDEX
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