Unlock instant, AI-driven research and patent intelligence for your innovation.

High-temperature-resistant alkali-resistant spandex and preparation method thereof

A technology of spandex and alkaline solution, applied in the field of polyurethane materials, can solve the problems of poor alkali resistance of ordinary spandex, and achieve the effects of good alkali resistance, good heat resistance and good breaking strength.

Active Publication Date: 2021-10-22
ZHUJI HUAHAI SPANDEX +3
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when spandex and polyester are blended and dyed, they are easily affected by alkaline treatment, etc., and the alkali resistance of ordinary spandex is also poor.

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-temperature-resistant alkali-resistant spandex and preparation method thereof
  • High-temperature-resistant alkali-resistant spandex and preparation method thereof
  • High-temperature-resistant alkali-resistant spandex and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A preparation method of spandex,

[0049] Preparation of modified titanium dioxide: Add titanium dioxide powder into weakly alkaline solution, after ultrasonic dispersion, stir at 80°C for 20 minutes, add modified solution, react for 2 hours under stirring, and age at 30°C for 6 hours after the reaction , filtered, washed, and dried to obtain modified titanium dioxide. Weakly alkaline solution is the ethanol solution that adds ammoniacal liquor, and the mass fraction of ethanol in the ethanol solution is 50wt%, and weakly alkaline solution is adjusted to pH 9 by ammoniacal liquor, and the addition amount of titanium dioxide powder is 14wt% of weakly alkaline solution, modified The solution contains a silane coupling agent KH550, and the content of the silane coupling agent in the modified solution is 4wt%.

[0050]Preparation of modified titanium dioxide emulsion: Add styrene, butyl acrylate, composite emulsifier, and sodium bicarbonate into deionized water and mix to ...

Embodiment 2

[0054] A preparation method of spandex,

[0055] Compared with Example 1, this example differs only in the preparation of the modified titanium dioxide emulsion.

[0056] Preparation of modified titanium dioxide emulsion: Add styrene, butyl acrylate, composite emulsifier, and sodium bicarbonate into deionized water and mix to obtain a styrene-acrylic mixture, add modified titanium dioxide and functional agent to mix, and then add an initiator to react to obtain a modified Titanium dioxide emulsion. The addition of styrene is 20wt% of deionized water, the addition of butyl acrylate is 20wt% of deionized water, and the composite emulsifier includes octylphenol polyoxyethylene ether-10 and sodium dodecylsulfonate, The content of octylphenol polyoxyethylene ether-10 in the composite emulsifier is 40wt%, and the addition of composite emulsifier is 1.2wt% of deionized water, and the addition of sodium bicarbonate is 0.55wt% of deionized water, The addition of modified titanium dio...

Embodiment 3

[0058] A preparation method of spandex,

[0059] Compared with Example 1, this example differs only in the preparation of the modified titanium dioxide emulsion.

[0060] Preparation of modified titanium dioxide emulsion: Add styrene, butyl acrylate, composite emulsifier, and sodium bicarbonate into deionized water and mix to obtain a styrene-acrylic mixture, add modified titanium dioxide and functional agent to mix, and then add an initiator to react to obtain a modified Titanium dioxide emulsion. The addition of styrene is 20wt% of deionized water, the addition of butyl acrylate is 20wt% of deionized water, and the composite emulsifier includes octylphenol polyoxyethylene ether-10 and sodium dodecylsulfonate, The content of octylphenol polyoxyethylene ether-10 in the composite emulsifier is 40wt%, and the addition of composite emulsifier is 1.2wt% of deionized water, and the addition of sodium bicarbonate is 0.55wt% of deionized water, The addition of modified titanium dio...

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses high-temperature-resistant alkali-resistant spandex (polyurethane fibers) and a preparation method thereof, belongs to the field of polyurethane materials, and particularly relates to a preparation method of a modified titanium dioxide emulsion. Titanium dioxide is ultrasonically dispersed into an alkaline solution, and then a modifier solution is added for modification reaction treatment to obtain modified titanium dioxide; the modifier solution contains a silane coupling agent; and the modified titanium dioxide emulsion is prepared from the modified titanium dioxide, 3-methyl-2-butene caffeate and a styrene-butyl acrylate mixed solution under the action of an initiator. Spandex is prepared from the modified titanium dioxide emulsion, the spandex is good in heat resistance, heat stability, breaking strength and alkali resistance, the temperature is 318-328 DEG C when the mass loss of the spandex is 5%, the thermal shrinkage rate of the spandex is 9-11%, the breaking strength of the spandex is 12-15 cN / tex, and the breaking strength retention rate of the spandex after alkali leaching is 93-98%.

Description

technical field [0001] The invention belongs to the field of polyurethane materials, and in particular relates to a high-temperature and alkali-resistant spandex and a preparation method thereof. Background technique [0002] The scientific name of spandex is polyurethane fiber. It is a kind of high elastic fiber with excellent mechanical properties. It has been widely used in various fields of industrial production. Spandex has good tensile properties at break, and its elongation at break is generally as high as 500%-800% according to the difference in linear density and production process. Compared with other man-made fibers, such as polypropylene (about 50%-80%), acrylic ( about 300%) and so on have been greatly improved. The tensile recovery performance of spandex is also excellent, and its 300% elastic recovery rate can generally reach 90%-98%, which has a good performance basis for maintaining its dimensional stability. In addition, spandex's anti-aging, corrosion re...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/10D01F6/94C08G18/10C08G18/48C08G18/66C08G18/32
CPCD01F1/10D01F6/94C08G18/10C08G18/6685C08G18/4854C08G18/3228
Inventor 徐爱军蔡函烨蔡华峻
Owner ZHUJI HUAHAI SPANDEX