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Nylon 6/superfine calcium carbonate microparticle complex fiber and preparation method thereof

A technology of ultra-fine calcium carbonate and composite fibers, which is applied in the fields of fiber chemical characteristics, melt spinning, rayon manufacturing, etc., can solve the problems of large equipment investment, dust pollution, high energy consumption, etc., and achieve reduced production costs, heat resistance Good grinding performance and the effect of promoting industrial production

Inactive Publication Date: 2009-02-11
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously there are disadvantages of high energy consumption, dust pollution, large investment in equipment, complicated process and easy re-agglomeration of nanoparticles due to secondary melting of resin

Method used

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  • Nylon 6/superfine calcium carbonate microparticle complex fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Put 1 part of superfine calcium carbonate particles and 0.02 part of surface treatment agent stearic acid into a high-speed mixer at a speed of 1000r / min, stir and mix for 25 minutes, then add 99 parts of nylon 6 slices, keep stirring and heat up, Stop heating when the temperature reaches 145°C, continue stirring and cooling, and discharge to room temperature. The prepared mixture was vacuum-dried at 90°C for 4 hours, then the mixture was put into a twin-screw extruder, and melt-spun at 280°C at a spinning speed of 700m / min. The stretching temperature is 95°C for the second drafting and heat setting, and the total drafting ratio is 3 times, so as to obtain the finished silk.

Embodiment 2

[0024] Put 3 parts of superfine calcium carbonate particles and 0.06 parts of surface treatment agent stearic acid into a high-speed mixer at a speed of 3000r / min, stir and mix for 20 minutes, then add 97 parts of nylon 66 slices, keep stirring and heat up. Stop heating when the temperature reaches 145°C, continue stirring and cooling, and discharge to room temperature. The prepared mixture was vacuum-dried at 90°C for 4 hours, then the mixture was put into a screw extruder, and melt-spun at 310°C, the spinning speed was 700m / min, and the winding wire was drawn by heat The temperature is between 210°C for the second drafting and heat setting, and the total drafting ratio is 6 times, so as to obtain the finished silk.

Embodiment 3

[0026] Put 5 parts of superfine calcium carbonate particles and 0.1 part of surface treatment agent stearic acid into a high-speed mixer at a speed of 3000r / min, stir and mix for 20 minutes, then add 95 parts of nylon 6 slices, keep stirring and heat up, Stop heating when the temperature reaches 145°C, continue stirring and cooling, and discharge to room temperature. The prepared mixture was vacuum-dried for 4 hours at a temperature of 90°C, then the mixture was put into a screw extruder, and melt-spun at 280°C, the spinning speed was 700m / min, and the winding wire was drawn by heat The temperature is 95°C for the second drafting and heat setting, and the total drafting ratio is 3 times, so as to obtain the finished silk.

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Abstract

The invention relates to a composite fiber of nylon 6 / ultra-fine calcium carbonate particles and a preparation method thereof. The temperature is raised to 140 DEG C so that nanometer calcium carbonate and other additives are evenly wrapped and stuck on the nylon resin, whereas the inter-particles of the nylon resin do not have severe conglutination. The composite fiber comprises the following component with the weight parts: 85-100 parts of nylon slices, 0.5-15 parts of ultra-fine calcium carbonate particles and 0.01-0.5 parts of surface treatment agent; the preparation method is as follows: (1) raw materials are weighed according to the weight parts; (2) calcium carbonate particles and the surface treatment agent are blended and mixed in a high-speed mixer, and added with the nylon slices to be well blended; after the mixture reaches 180 DEG C to 230 DEGC, the heating is ceased; the mixture is stirred and cooled, and then is discharged at a room temperature; (3) after being dried, the mixture is put into a screw extruder for melt spinning, and the winding wires are obtained; (4) drafting and heat setting treatments are applied to the the winding wires, and then drawn yarns are obtained; (5) the follow-up treatment of the drawn yarns is as usual. The fiber has the advantages of good mechanical properties and wear-resistance property and can be widely applied to clothing and technical textiles fields. The invention has the advantages of simple process, easy control, low cost, and short cycle; besides, the invention is environment-friendly and suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of composite fibers, in particular to a nylon 6 / ultrafine calcium carbonate particle composite fiber and a preparation method thereof. Background technique [0002] One of the important uses of nylon resin is fiber, which is used in clothing and various industrial textiles. Because the market price of nylon has always been high, many manufacturers use filler filling modification to reduce raw material costs. Polymer / inorganic particle composite material is a research hotspot in the field of materials in recent years. Its mechanical properties, toughness, heat resistance, dimensional stability and other properties are significantly improved compared with bulk polymers. Nylon / ultrafine calcium carbonate particle composite material is one of them. one. Studies have shown that the mechanics, heat resistance, compression resistance, solvent resistance, wear resistance and other properties of nylon 6 / ultrafine calcium car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/90D01F1/10D01D5/08
Inventor 王依民曹玲玲宣大胜倪建华袁静
Owner DONGHUA UNIV
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