Polyurethane elastic fiber with thermal insulation performance and preparation method thereof

A polyurethane elasticity, polyurethane fiber technology, applied in the direction of fibrous filler, fiber chemical characteristics, rayon manufacturing, etc., to achieve excellent thermal insulation effect, reduce heat loss, reduce the effect of powder surface energy

Active Publication Date: 2016-03-02
ZHEJIANG HUAFENG SPANDEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there is no relevant patent literature report that this technology is applied to the preparation of new functional fibers

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] 3. Preparation of spinning stock solution: Prepolymerize polymer diol and diisocyanate to obtain isocyanate group-terminated prepolymer; add organic solvent to the prepolymer for dissolution, dilution, cooling, and then through high-speed static mixing Mix it with the chain extender, end-capping agent, etc.; after the reaction is completed, add the powder mixture, antioxidant, UV-resistant additive, dyeing auxiliary, and lubricant to the polymer in sequence, and stir thoroughly. Obtain spinning dope;

[0025] 4. Evaporate the solvent from the spinning dope through a high-temperature tunnel, and then stretch, oil, and wind to prepare polyurethane urea elastic fibers with thermal insulation properties.

[0026] In the invention step 1, the grinding time of the ceramic powder is 1-3 hours.

[0027] In the invention step 1, the pressure value of the reaction tank after pumping is 1-100 Pa; after the discharge gas is introduced, the vacuum degree of the reaction tank is mai...

Embodiment 1

[0036] 1. Add 50 grams of zirconia to a planetary ball mill for high-speed grinding, and the grinding time is 2 hours; take the ground zirconia and place it in the vacuum reaction tank of the low-temperature plasma treatment equipment, turn on the vacuum pump, and reduce the air pressure in the reaction tank Pump down to 10 Pa; feed helium, and adjust the vacuum valve to keep the vacuum in the reaction tank at 50 Pa; turn on the radio frequency power supply, and adjust the radio frequency power to 400 watts to ionize the gas in the reaction tank to generate glow discharge ;

[0037] 2. After the plasma treatment of zirconia is completed, it is directly added to 500 ml of dimethylacetamide and stirred at high speed to form a mixed solution of zirconia-dimethylacetamide;

[0038] 3. Pre-polymerize 4.5 kg of polytetramethylene ether glycol, 0.5 kg of polyoxypropylene glycol and 1.2 kg of 4,4'-diphenylmethane diisocyanate at 65 degrees Celsius for 1.5 hours to obtain isocyanate G...

Embodiment 2

[0041] 1. Add 60 grams of alumina to the planetary ball mill for high-speed grinding, the grinding time is 1.5 hours; take the ground alumina and place it in the vacuum reaction tank of the low-temperature plasma treatment equipment, turn on the vacuum pump, and put the The air pressure is pumped to 5 Pa; oxygen is introduced, and the vacuum valve is adjusted to keep the vacuum in the reaction tank at 80 Pa; the radio frequency power is turned on, and the radio frequency power is adjusted to 320 watts to ionize the gas in the reaction tank and generate glow discharge ;

[0042] 2. After the alumina is treated with plasma, it is directly added to 450 ml of dimethylacetamide and stirred at a high speed to form a mixed solution of alumina-dimethylacetamide;

[0043] 3. Prepolymerize 4.2 kg of polytetramethylene ether glycol, 0.8 kg of polyethylene adipate glycol and 1.5 kg of isophorone diisocyanate at 85 degrees Celsius for 3 hours to obtain isocyanate The prepolymer of group t...

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

A polyurethane elastic fiber with thermal insulation performance and a preparation method thereof. A ceramic powder of nanometer level as an insulation additive is mixed with polyurethane fiber, wherein the dosage of ceramic powder is 0.1-10% of the weight of polyurethane fiber. The barrier and reflection effects of ceramic powder on heat radiation are utilized to reduce heat loss; a low temperature plasma irradiation technology is used for modification treatment on the powder surface, so that the ceramic powder shows good dispersion effect and interface combination effect in polyurethane. The polyurethane prepared by the method has excellent thermal insulation performance, is especially suitable for weaving fabrics for winter underwear, and elastic fabrics such as knee pads, wrister and waistband, etc.

Description

technical field [0001] The invention belongs to a technical method for preparing polyurethane elastic fibers, in particular to a method for preparing polyurethane elastic fibers with thermal insulation performance. Background technique [0002] Polyurethane fiber (referred to as "spandex") is widely used in high-end clothing, sweatshirts, underwear, socks, swimsuits and other textile fields due to its good elasticity. Wearing spandex-containing clothing can not only bring good comfort, but also highlight the perfect self-cultivation effect, so the proportion of spandex in fabrics is also increasing. With the improvement of people's living standards and the development of textile industry technology, people have put forward more and higher requirements for the functionality of spandex and ammonia-containing fabrics: for example, elastic fabrics used for winter thermal underwear not only have a close-fitting and comfortable wearing feeling, It should also have a certain heat ...

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): D01F6/94D01F1/10C08G18/66C08G18/48C08G18/42C08G18/12C08G18/10C09C3/04C09C1/00C09C1/40C09C1/28
Inventor 许图远陈厚翔邵晓林毛植森梁红军陈铃
Owner ZHEJIANG HUAFENG SPANDEX
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