Ultra-low thermal shrinking polyurethane ultrafine fiber base cloth and preparation method thereof

A superfine fiber, polyurethane technology, applied in the direction of fiber type, fiber processing, textile material processing, etc., can solve the problems of not fully meeting the customer's high-temperature processing requirements, damage to the base cloth, and increasing the cost of drying cloth, so as to meet the high-temperature drying requirements. It can meet the requirements of veneer, ultra-low thermal shrinkage, and the effect of meeting the requirements of high temperature use.

Active Publication Date: 2019-03-26
江苏华峰超纤材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to meet the requirements of heat shrinkage, some people use to adjust the expansion setting temperature to 170-180 degrees, but there are the following disadvantages: first, special high temperature resistant resin needs to be selected; second, if there is an oven failure, the base fabric will stay in the oven , will cause serious damage to the base fabric
Some people use the base cloth to knead the leather and then pre-baked it again. The heat shrinkage value will decrease, but it will increase the cost of baking cloth by 0.5 yuan / m, and the heat shrinkage value is between 1.0-2.5%, which still cannot fully meet the customer's high-temperature processing. Require

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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  • Ultra-low thermal shrinking polyurethane ultrafine fiber base cloth and preparation method thereof
  • Ultra-low thermal shrinking polyurethane ultrafine fiber base cloth and preparation method thereof
  • Ultra-low thermal shrinking polyurethane ultrafine fiber base cloth and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The non-woven fabric formed by needle punching of nylon 6 and polyethylene as raw materials of sea-island staple fiber is immersed in the wet slurry, then coagulated and washed with water, then the polyethylene is reduced in hot toluene and the wet cloth is oiled. Continuous kneading to obtain ultra-low heat shrinkable polyurethane microfiber base fabric;

[0041] The spinning, non-woven needle punching process, impregnating slurry batching, impregnation, coagulation and water washing process, and weight reduction process are all conventional processes in the field. Reference: Qu Jianbo: Synthetic Leather Technology [M ]. Beijing: Chemical Industry Press. 2015. The processing technology reported in P18-P211.

[0042] Wherein, the oiling process parameters of the wet cloth include:

[0043] The oiling method is padding treatment, three padding and three rolling;

[0044] The upper oil is composed of the following mass percentage components:

[0045]

[0046] The oil concentratio...

Embodiment 2

[0055] The non-woven fabric formed by needle punching of polyester and polyethylene as raw materials of sea-island short fibers is immersed in a wet slurry, then coagulated and washed with water, then the polyethylene is reduced in hot toluene, and the wet cloth is oiled. Continuous kneading to obtain ultra-low heat shrinkable polyurethane microfiber base fabric;

[0056] The spinning, non-woven needle punching process, impregnating slurry batching, impregnation, coagulation and washing process, and weight reduction process are all conventional processes in the field. References: Qu Jianbo: Synthetic Leather Technology [M ]. Beijing: Chemical Industry Press. 2015. The processing technology reported in P18-P211.

[0057] Wherein, the oiling process parameters of the wet cloth include:

[0058] The oiling method is padding treatment, preferably three dip and three rolling;

[0059] The upper oil is composed of the following mass percentage components:

[0060]

[0061] The concentration...

Embodiment 3

[0070] The non-woven fabric formed by needle punching of nylon 6 and styrene as raw materials of sea-island staple fiber is immersed in the wet slurry, then coagulated and washed with water, then the polyethylene is reduced in hot toluene, and the wet cloth is oiled. Continuous kneading to obtain ultra-low heat shrinkable polyurethane microfiber base fabric;

[0071] The spinning, non-woven needle punching process, impregnating slurry batching, impregnation, coagulation and water washing process, and weight reduction process are all conventional processes in the field. Reference: Qu Jianbo: Synthetic Leather Technology [M ]. Beijing: Chemical Industry Press. 2015. The processing technology reported in P18-P211.

[0072] Wherein, the oiling process parameters of the wet cloth include:

[0073] The oiling method is padding treatment, preferably three dip and three rolling;

[0074] The upper oil is composed of the following mass percentage components:

[0075]

[0076] The concentration...

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Abstract

The invention discloses ultra-low thermal shrinking polyurethane ultrafine fiber base cloth and a preparation method thereof. The preparation method of the ultra-low thermal shrinking polyurethane ultrafine fiber base cloth comprises the following steps: impregnating a non-woven fabric formed by needling nylon 6 or polyester and island short fibers prepared from polyethylene or styrene in wet process slurry; then carrying out condensation and washing; extracting polyethylene or styrene in hot methylbenzene to obtain wet cloth; then impregnating the wet cloth in an oiling solution to knead grains continuously and dry to obtain the ultra-low thermal shrinking polyurethane ultrafine fiber base cloth. The oiling solution contains amino silicone oil, isodecanol polyoxyethylene ether, iso-tridecanol polyoxyethylene ether, butyl diglycol acetate and water. The ultra-low thermal shrinking polyurethane ultrafine fiber base cloth has an ultralow thermal shrinking rate, the thermal shrinking value of a base cloth finished product is 0.1-1.5%, and the crease is smooth. The ultra-low thermal shrinking polyurethane ultrafine fiber base cloth can meet the high-temperature using demand and can meet the high-temperature dry method veneering demand.

Description

Technical field [0001] The invention relates to a polyurethane superfine fiber base fabric and a preparation method thereof. Background technique [0002] In recent years, as the country has paid more and more attention to environmental protection and issued more stringent environmental protection policies, companies have been forced to increase environmental protection facilities and adopt new processes and equipment to save energy and reduce emissions. [0003] Previously, dry veneers used solvent systems such as DMF / TOL and DMF / MEK. Although the DMF recovery technology is mature, the mixed solvent recovery technology is difficult and costly. As a result, low boiling point solvents such as TOL and MEK cannot be recovered. Therefore, some people use it. Pure DMF is used as a solvent carrier to replace the previous DMF / TOL, DMF / MEK and other mixed solvent systems to reduce VOC emissions. Due to the high boiling point of DMF, it is necessary to increase the temperature of the veneer...

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 Applications(China)
IPC IPC(8): D06M15/643D06M15/53D06M13/165D06B3/18D06C23/04D06M101/38D06M101/20D06M101/34D06M101/32
CPCD06B3/18D06C23/04D06M13/165D06M15/53D06M15/6436D06M2101/20D06M2101/38D06M2101/32D06M2101/34
Inventor 于晓成张水观韩芹
Owner 江苏华峰超纤材料有限公司
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