Preparation method of high-strength hollow polypropylene fibers

A polypropylene fiber, high-strength technology, used in hollow filament manufacturing, fiber chemical characteristics, single-component polyolefin rayon, etc., can solve the problem of insufficient polypropylene fiber strength and achieve the effect of improving stability

Inactive Publication Date: 2021-06-11
WUXI YOUJIA NON WOVEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems in the prior art, the present invention provides a method for preparing high-strength hollow polypropylene fibers, which solves the problem of insufficient strength of existing polypropylene fibers, and greatly improves the strength of polypropylene fibers by utilizing the stability of the silicon-oxygen structure. Strength Stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method for high-strength hollow polypropylene fibers, comprising the steps of:

[0021] Step 1, adding ethyl cellulose to 1L of absolute ethanol for ultrasonic dispersion to form a solution, then adding ammonium carbonate, and stirring evenly to form a suspension; the concentration of ethyl cellulose in absolute ethanol is 5g / L, the ultrasonic frequency is 60kHz, the temperature is 40°C, the concentration of the ammonium carbonate in absolute ethanol is 400g / L, the stirring speed is 1000r / min, and the stirring temperature is 20°C;

[0022] Step 2, adding polypropylene to 1L of toluene for ultrasonic dispersion to form a stable solution, and then ultrasonically dispersing phenyltrichlorosilane at low temperature to form a mixed solution; the concentration of the polypropylene in toluene is 100g / L, and the ultrasonic dispersion The ultrasonic frequency is 40kHz, the temperature is 70°C, the amount of phenyltrichlorosilane added is 20% of the mass of polypro...

Embodiment 2

[0027] A preparation method for high-strength hollow polypropylene fibers, comprising the steps of:

[0028] Step 1, adding ethyl cellulose to 1L of absolute ethanol for ultrasonic dispersion to form a solution, then adding ammonium carbonate, and stirring evenly to form a suspension; the concentration of ethyl cellulose in absolute ethanol is 10g / L, the ultrasonic frequency is 90kHz, the temperature is 50°C, the concentration of the ammonium carbonate in absolute ethanol is 600g / L, the stirring speed is 2000r / min, and the stirring temperature is 40°C;

[0029] Step 2, adding polypropylene to 1L of toluene for ultrasonic dispersion to form a stable solution, and then ultrasonically dispersing phenyltrichlorosilane at low temperature to form a mixed solution; the concentration of the polypropylene in toluene is 200g / L, and the ultrasonic dispersion The ultrasonic frequency is 60kHz, the temperature is 80°C, the amount of phenyltrichlorosilane added is 30% of the polypropylene ...

Embodiment 3

[0034] A preparation method for high-strength hollow polypropylene fibers, comprising the steps of:

[0035] Step 1, adding ethyl cellulose to 1L of absolute ethanol for ultrasonic dispersion to form a solution, then adding ammonium carbonate, and stirring evenly to form a suspension; the concentration of ethyl cellulose in absolute ethanol is 8g / L, the ultrasonic frequency is 70kHz, the temperature is 45°C, the concentration of the ammonium carbonate in absolute ethanol is 400-600g / L, the stirring speed is 1500r / min, and the stirring temperature is 30°C;

[0036] Step 2, adding polypropylene to 1L of toluene for ultrasonic dispersion to form a stable solution, and then ultrasonically dispersing phenyltrichlorosilane at low temperature to form a mixed solution; the concentration of the polypropylene in toluene is 150g / L, and the ultrasonic dispersion The ultrasonic frequency is 50kHz, the temperature is 75°C, the amount of phenyltrichlorosilane added is 25% of the polypropyle...

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Abstract

The invention belongs to the field of non-woven fabric, and particularly relates to a preparation method of high-strength hollow polypropylene fibers. The preparation method includes the following steps: step 1, adding ethyl cellulose into absolute ethyl alcohol, performing ultrasonic dispersion to dissolve, then adding ammonium carbonate, and uniformly stirring to form turbid liquid; step 2, adding polypropylene into toluene, carrying out ultrasonic dispersion to form a stable dissolved solution, and then carrying out low-temperature ultrasonic dispersion on phenyl trichlorosilane to form a mixed solution; step 3, carrying out reduced pressure distillation on the mixed solution for 30-60 minutes to form a viscous solution; and then carrying out constant-temperature spinning by taking the viscous liquid as a shell layer solution and the turbid liquid as a core layer solution, and standing to form prefabricated cellosilk; and step 4, carrying out constant-temperature illumination standing treatment on the prefabricated cellosilk to form the hollow cellosilk.

Description

technical field [0001] The invention belongs to the field of non-woven fabrics, and in particular relates to a preparation method of high-strength hollow polypropylene fibers. Background technique [0002] At present, non-woven fabrics, also known as non-woven fabrics, are composed of oriented or random fibers. It is called cloth because of its appearance and certain properties. Polypropylene pellets are mostly used as raw materials, which are produced by continuous one-step process of high-temperature melting, spinning, laying, and hot-pressing coiling. Non-woven fabrics have no warp and weft threads, are very convenient for cutting and sewing, and are light in weight and easy to shape, so they are deeply loved by handicraft lovers. [0003] Non-woven products are used in many ways, medical and sanitary non-woven fabrics: surgical gowns, protective clothing, disinfection wraps, masks, diapers, civilian rags, wiping cloths, wet face towels, magic towels, soft towel rolls, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D01F1/10D01F1/08
CPCD01F6/46D01F1/10D01F1/08
Inventor 施梦杰
Owner WUXI YOUJIA NON WOVEN TECH
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