High-temperature-resistance polyamide fibers for high-simulation human hair wigs and preparation method of high-temperature-resistance polyamide fibers

A polyamide-based, high-temperature-resistant technology, which is applied in the field of high-temperature-resistant polyamide fibers for high-simulation human hair wigs and its preparation, can solve the problems of lack of heat resistance and weather resistance, unnatural touch and luster, and affecting the use of nylon, etc. problems, to achieve the effect of easy combing, easy shaping, good hand feeling retention, and not easy to fade

Pending Publication Date: 2019-03-01
HENAN REBECCA HAIR PRODS TNC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for fibers with better heat resistance and shape retention, such as polyester fibers, the processing and modeling need to be carried out at a high temperature of 150°C to 180°C, and the touch will be much harder compared with other fibers, and will produce a prickly feel. And plastic feeling, unnatural touch and gloss
Fibers that are easy to shape and process, such as polypropylene and polyvinyl chlo

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0045]This is a "semi-granulation" preparation method. The production cost of semi-granulation is relatively low, which can reduce the granulation time and consumption by 60% to 80%. From the perspective of economy, if the quality can reach a consistent On the premise of uniformity, semi-granulation will be given priority. On the other hand, PA6, PA66, PA610, PA1010 and other nylons have a large difference in melting point and fluidity (viscosity) at each processing temperature. For spinning, large melting point difference and uneven blending will also cause quality problems. , through semi-granulation, the above two or more nylons can achieve a better blending effect before spinning, and can narrow the physical property gap between the above two or more nylons, which is more beneficial to subsequent spinning and forming And stable quality, otherwise the mixed melt is difficult to spin.

[0046] Another method for preparing high-temperature-resistant polyamide fibers for hair...

Embodiment 1

[0058] a. Mix 20 parts of PA6 with a viscosity of 2.60, a certain proportion of color masterbatch, 0.1 part of titanium dioxide and 0.1 part of calcium carbonate in a high-speed mixer; b. Form the mixture in step a through a twin-screw granulator The strips are cooled in cooling water to form, and the diluted masterbatch slices are formed after passing through the granulator; c. Dry 80 parts of the dried PA6 and the masterbatch slices in step b at 110°C for 6 hours respectively, and the dried The water content is controlled below 40ppm; d. The mixed chips dried in step c are passed through a weight loss weighing scale with a plasticizer, and then melted and extruded at 230-245° C. by a screw extruder to form a spinning melt; e. the spinning melt in step d is 80-110kg / cm 2 The pressure of the screw head passes through the elbow and enters the raw material pipeline in the spinning box, after being pressurized by the metering pump, it is extruded through the spinning assembly, an...

Embodiment 2

[0060] a. After uniformly mixing 20 parts of PA66 with a viscosity of 3.0 and a certain number of masterbatches in a high-speed mixer, dry at 120°C for 8 hours, and control the moisture after drying below 80ppm; b. Mix in step a The material is formed into strips through a twin-screw granulator, cooled and formed in cooling water, and diluted masterbatch slices are formed after passing through a pelletizer; c. 80 parts of PA6 with a viscosity of 2.8 and the masterbatch in step b that have been dried in advance The slices were dried at 120°C and 110°C for 6 hours respectively, and the moisture after drying was controlled below 40PPm; d. The mixed slices dried in step c, and a certain proportion of plasticizer were fed in proportion to the weight loss weighing scale. Screw extruder, melt extrusion at 240-250°C to form a spinning melt; e. the spinning melt in step d is 80-110kg / cm 2 The pressure of the screw head passes through the elbow and enters the raw material pipeline in th...

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Abstract

The invention relates to polyamide fibers, in particular to high-temperature-resistance polyamide fibers for high-simulation human hair wigs and a preparation method of the high-temperature-resistancepolyamide fibers. Color masterbatch slices are prepared from 20-40% of the weight of required polyamide resin and other raw materials, a spinning melt solution is prepared from the remaining polyamide resin and the obtained color masterbatch slices, and the high-temperature-resistance polyamide fibers for hair is prepared from the spinning melt solution. The wig fibers produced through the preparation method have excellent chemical stability, thermal stability, strength, abrasion resistance and shaping persistence, have the luster of natural human hair and excellent elasticity, drapability and the combing property, are easy to dye, are not prone to fading, and are easy to model and neaten.

Description

[technical field] [0001] The invention relates to polyamide fibers, in particular to a high-temperature-resistant polyamide fiber for highly simulated human hair wigs and a preparation method thereof. [Background technique] [0002] Natural human hair has always been the main raw material of hair products. With the increasing consumer demand, its resources are becoming increasingly scarce and its price is constantly rising. Thereby chemical fiber is researched and developed by people gradually, is used to replace natural human hair as the raw material of hair product, as modified polypropylene fiber, polyvinyl chloride fiber, polyester and polyamide fiber have been used in hair product. However, due to the increasing demands of consumers on hair products, chemical fibers used as artificial hair not only need to have a suitable light and touch, but also consider the ease of processing and weather resistance. However, for fibers with better heat resistance and shape retention...

Claims

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Application Information

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IPC IPC(8): D01F6/90D01F1/10D01D1/02D01D5/12D01D5/088D01D5/096A41G3/00
CPCA41G3/0083D01D1/02D01D5/088D01D5/096D01D5/12D01F1/10D01F6/90D01F6/905
Inventor 郑文青吴学丙石华涛丁刚
Owner HENAN REBECCA HAIR PRODS TNC
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