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Preparation method of urethane elastic fiber with function of resisting electromagnetic radiation

A technology of anti-electromagnetic radiation and spandex fiber, which is applied in the field of polyurethane elastic fiber, can solve problems such as wearing discomfort, and achieve the effect of reducing damage to personal health

Inactive Publication Date: 2014-03-19
ZHEJIANG HUAFENG SPANDEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common anti-electromagnetic radiation materials mainly include stainless steel (authorized publication number: 101724968B), silver (authorized announcement number: CN202396441U) and other metals. Generally, these metals are prepared into fibers, and then mixed with other polymer fibers (such as polyester, acrylic, etc.) ), prepared as anti-electromagnetic radiation fabrics, but these fabrics will cause discomfort when wearing due to the existence of metal fibers
By consulting a large number of relevant documents and patent materials, it is found that there is no report about the electromagnetic radiation resistant spandex and its preparation method at present, so a kind of electromagnetic radiation resistant spandex and its preparation method involved in the present invention will fill the spandex in the electromagnetic radiation resistant To meet the gaps in the field, improve the product categories of spandex, and meet the actual needs of the market and the people

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 6kgDMAc and 10kgPTMG into the prepolymerization tank through a mass flowmeter, stir and mix evenly, and when the temperature reaches about 25°C, add 2.417kgMDI through a mass flowmeter, raise the temperature to 60°C and keep it warm, and the reaction time is 1.5h. prepolymerized product.

[0021] Add 15kg of DMAc to the prepolymerization tank to dilute the prepolymerization product. After stirring for 10 minutes, transfer the prepolymer solution to the chain extension tank, and use refrigerant to cool the temperature of the prepolymer solution in the chain extension tank to about 10°C, and start Slowly add chain extender amine solution dropwise. The end point of the reaction was judged according to the current curve of the stirring motor. After the chain extension is completed, 127g of multi-walled carbon nanotubes, anti-yellowing additives, anti-ultraviolet absorbers, antioxidants, lubricants, matting agents and other additives are added.

[0022] The method for ...

Embodiment 2

[0026] Add 5.5kgDMAc and 9kgPTMG into the prepolymerization tank through a mass flowmeter, stir and mix evenly, when the temperature reaches about 25°C, add 2.175kgMDI through a mass flowmeter, raise the temperature to 60°C and keep it warm, the reaction time is 1.5h, A prepolymerized product is obtained.

[0027] Add 14kg of DMAc to the prepolymerization tank to dilute the prepolymerization product. After stirring for 10 minutes, transfer the prepolymer solution to the chain extension tank. Cool the temperature of the prepolymer solution in the chain extension tank to about 10°C with a refrigerant, and start Slowly add chain extender amine solution dropwise. The end point of the reaction was judged according to the current curve of the stirring motor. After the chain extension is completed, 57.2g of multi-walled carbon nanotubes, anti-yellowing additives, anti-ultraviolet absorbers, antioxidants, lubricants, matting agents and other additives are added.

[0028] The method ...

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PUM

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Abstract

The invention relates to a preparation method of a urethane elastic fiber with a function of resisting electromagnetic radiation. The preparation method comprises the following steps: sequentially adding dimethylacetamide and polytetramethylene ether glycol into a pre-polymerizing tank; then, precisely adding 4, 4-diphenylmethane diisocyanate in a certain proportion of NCO / OH; heating to a set temperature and carrying out pre-polymerization reaction; after reaching the predetermined reaction time, adding diluting dimethylacetamide into the pre-polymerizing tank and stirring for a period of time; transferring pre-polymer liquor to a chain extending tank; cooling the pre-polymer liquor in the chain extending tank to about 10 DEG C through a refrigerant; then, slowly adding chain extending amine liquor; judging the terminal point of the reaction according to a current curve of a stirring motor; after chain extension, adding various additives such as a multiwalled carbon nanotube, an anti-yellowing assistant, an ultraviolet light resistant absorber, an antioxidant, a lubricant and a delustering agent; and preparing the urethane elastic fiber by polymerizing original liquor through dry spinning.

Description

technical field [0001] The invention relates to a preparation method of spandex fiber with anti-electromagnetic radiation function, belonging to the field of polyurethane elastic fiber. Background technique [0002] Electromagnetic waves are a form of energy that is widely used in industrial production and daily life. According to the frequency from high to low, it can be divided into seven categories: radio waves, microwaves, infrared rays, visible light, ultraviolet light, X-rays, and gamma rays. . Studies have proved that long-term exposure to electromagnetic radiation can easily cause human immunity to decline, metabolic disorders, male and female reproductive capacity decline, pregnant women are prone to miscarriage, fetal deformities and other hazards. Personal health plays an effective protective role. At present, the common anti-electromagnetic radiation materials mainly include stainless steel (authorized publication number: 101724968B), silver (authorized announc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10C08G18/66C08G18/48C08G18/10
Inventor 毛植森邵晓林陈铃冯益虎许图远席青梁红军费长书
Owner ZHEJIANG HUAFENG SPANDEX
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