CN112941653A - Preparation method of high-strength hollow polypropylene fiber - Google Patents
Preparation method of high-strength hollow polypropylene fiber Download PDFInfo
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- CN112941653A CN112941653A CN202110101846.4A CN202110101846A CN112941653A CN 112941653 A CN112941653 A CN 112941653A CN 202110101846 A CN202110101846 A CN 202110101846A CN 112941653 A CN112941653 A CN 112941653A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/08—Addition of substances to the spinning solution or to the melt for forming hollow filaments
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
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- Artificial Filaments (AREA)
Abstract
The invention belongs to the field of non-woven fabrics, and particularly relates to a preparation method of a high-strength hollow polypropylene fiber, which comprises the following steps: step 1, adding ethyl cellulose into absolute ethyl alcohol, performing ultrasonic dispersion to form a solution, then adding ammonium carbonate, and uniformly stirring to form a suspension; step 2, adding polypropylene into toluene, performing ultrasonic dispersion to form stable dissolved solution, and performing low-temperature ultrasonic dispersion on phenyltrichlorosilane to form mixed solution; step 3, distilling the mixed solution under reduced pressure for 30-60min to form viscous liquid; then taking the viscous liquid as a shell layer solution, taking the suspension as a core layer solution, carrying out constant-temperature spinning, and standing to form prefabricated fiber yarns; and 4, carrying out constant-temperature illumination standing treatment on the prefabricated fiber yarns to form the hollow fiber yarns.
Description
Technical Field
The invention belongs to the field of non-woven fabrics, and particularly relates to a preparation method of a high-strength hollow polypropylene fiber.
Background
Currently, nonwoven fabrics, also known as nonwovens, are composed of oriented or random fibers. It is called a cloth because of its appearance and certain properties. The polypropylene fiber is mainly produced by taking polypropylene granules as raw materials through a continuous one-step method of high-temperature melting, spinning, laying a line and hot-pressing coiling. The non-woven fabric has no warp and weft, is very convenient to cut and sew, is light in weight and easy to shape, and is popular with hand fans.
Nonwoven products are used in many ways, nonwoven fabrics for medical and hygiene purposes: surgical gowns, protective clothing, sterilization wraps, masks, diapers, household wipes, wiping cloths, wet face towels, magic towels, soft tissue rolls, beauty products, sanitary napkins, sanitary pads, disposable sanitary cloths, and the like. Non-woven fabrics for home decoration: wall cloth, tablecloth, bed sheets, bedspreads and the like. Non-woven fabric for clothing: lining, adhesive lining, flocculus, shaped cotton, various synthetic leather base fabrics and the like. Industrial non-woven fabric; the waterproof material comprises a base material of a roof waterproof coiled material and an asphalt tile, a reinforcing material, a polishing material, a filtering material, an insulating material, a cement packaging bag, geotextile, coating cloth and the like. Non-woven fabrics for agricultural use: crop protection cloth, seedling raising cloth, irrigation cloth, a heat preservation curtain and the like. Other non-woven fabrics: space cotton, heat-insulating and sound-insulating materials, oil-absorbing felt, smoke filter tips, tea bags, shoe materials and the like. Packaging: the bag comprises a composite cement bag, a bag lining cloth, a packaging base lining, quilt wadding, a storage bag and a movable jacquard bag cloth. The automotive industry: the heat insulation cushion comprises a waste textile insulation heat felt, a shockproof felt, a ceiling, a cushion lining, a carpet, a vehicle door lining, a vehicle filter element and a formed cushion. Civil engineering, construction: reinforcing, filtering, felt base cloth, drainage plates, roof waterproof materials, railways, highways, dikes, slopes, harbors, sewers, heat protection, separation and drainage. Other uses are as follows: carrier rocket, missile head heat-proof cone, tail nozzle throat lining, high-grade paper money printing paper, aerospace plane heat-resistant tile, map cloth, wall calendar cloth, artificial cloth, canvas and the like.
Polypropylene is used as a raw material of a non-woven fabric, and is formed into monofilaments after being drawn, and in the process of forming the non-woven fabric, the polypropylene has low strength and a fracture risk based on the material characteristics of the polypropylene.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a preparation method of a high-strength hollow polypropylene fiber, which solves the problem of insufficient strength of the existing polypropylene fiber, and greatly improves the stability of the strength of the polypropylene fiber by utilizing the stability of a silica structure.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a preparation method of high-strength hollow polypropylene fiber comprises the following steps:
step 1, adding ethyl cellulose into absolute ethyl alcohol, performing ultrasonic dispersion to form a solution, then adding ammonium carbonate, and uniformly stirring to form a suspension; the concentration of the ethyl cellulose in the absolute ethyl alcohol is 5-10g/L, the ultrasonic frequency is 60-90kHz, the temperature is 40-50 ℃, the concentration of the ammonium carbonate in the absolute ethyl alcohol is 400-600g/L, the stirring speed is 1000-2000r/min, and the stirring temperature is 20-40 ℃;
step 2, adding polypropylene into toluene, performing ultrasonic dispersion to form stable dissolved solution, and performing low-temperature ultrasonic dispersion on phenyltrichlorosilane to form mixed solution; the concentration of the polypropylene in toluene is 100-200g/L, the ultrasonic frequency of ultrasonic dispersion is 40-60kHz, the temperature is 70-80 ℃, the adding amount of the phenyl trichlorosilane is 20-30% of the mass of the polypropylene, the temperature of low-temperature ultrasonic treatment is 5-10 ℃, and the ultrasonic frequency is 40-60 kHz;
step 3, distilling the mixed solution under reduced pressure for 30-60min to form viscous liquid; then taking the viscous liquid as a shell layer solution, taking the suspension as a core layer solution, carrying out constant-temperature spinning, and standing to form prefabricated fiber yarns; the pressure of the reduced pressure distillation is 60-80% of the standard atmospheric pressure, the temperature is 110-120 ℃, the volume ratio of the shell layer solution to the nuclear layer solution is 0.3-5, the feeding amount of the shell layer solution is 2-5mL/min, the temperature of the constant temperature spinning is 90-100 ℃, the standing time is 20-40min, and the temperature is 80-90 ℃;
step 4, performing constant-temperature illumination standing treatment on the prefabricated fiber yarns to form hollow fiber yarns; the temperature of the constant-temperature illumination standing is 100-120 ℃, and the illumination intensity is 20-40W/cm2The illumination adopts infrared light.
The diameter of the hollow fiber filament is 300-900nm, and the hollow rate of the hollow fiber filament is 30-70%.
The hollow fiber yarn is woven to form a non-woven fabric, and the non-woven fabric is used for the mask.
From the above description, it can be seen that the present invention has the following advantages:
1. the invention solves the problem of insufficient strength of the existing polypropylene fiber, and greatly improves the stability of the strength of the polypropylene fiber by utilizing the stability of the silica structure.
2. According to the invention, the water vapor formed by decomposing ammonium carbonate and phenyl trichlorosilane are utilized to form a matching hydrolysis effect, and an in-situ hydrolysis effect is formed, so that the stability is greatly improved.
3. The invention utilizes the light permeability of the silica structure and the air permeability of the silica gap to decompose the ethyl cellulose, thereby removing impurities in the hollow layer.
Detailed Description
The present invention is described in detail with reference to examples, but the present invention is not limited to the claims.
Example 1
A preparation method of high-strength hollow polypropylene fiber comprises the following steps:
step 1, adding ethyl cellulose into 1L of absolute ethyl alcohol, performing ultrasonic dispersion to form a solution, then adding ammonium carbonate, and uniformly stirring to form a suspension; the concentration of the ethyl cellulose in the absolute ethyl alcohol is 5g/L, the ultrasonic frequency is 60kHz, the temperature is 40 ℃, the concentration of the ammonium carbonate in the absolute ethyl alcohol is 400g/L, the stirring speed is 1000r/min, and the stirring temperature is 20 ℃;
step 2, adding polypropylene into 1L of toluene, performing ultrasonic dispersion to form stable dissolved solution, and performing low-temperature ultrasonic dispersion on phenyltrichlorosilane to form mixed solution; the concentration of the polypropylene in toluene is 100g/L, the ultrasonic frequency of ultrasonic dispersion is 40kHz, the temperature is 70 ℃, the addition amount of the phenyl trichlorosilane is 20 percent of the mass of the polypropylene, the temperature of low-temperature ultrasonic is 5 ℃, and the ultrasonic frequency is 40 kHz;
step 3, distilling the mixed solution under reduced pressure for 30min to form viscous liquid; then taking the viscous liquid as a shell layer solution, taking the suspension as a core layer solution, carrying out constant-temperature spinning, and standing to form prefabricated fiber yarns; the reduced pressure distillation pressure is 60% of standard atmospheric pressure, the temperature is 110 ℃, the volume ratio of the shell layer solution to the core layer solution is 0.3, the feeding amount of the shell layer solution is 2mL/min, the constant temperature spinning temperature is 90 ℃, the standing time is 20min, and the temperature is 80 ℃;
step 4, performing constant-temperature illumination standing treatment on the prefabricated fiber yarns to form hollow fiber yarns; the constant-temperature illumination standing temperature is 100 ℃, and the illumination intensity is 20W/cm2The illumination adopts infrared light.
The diameter of the hollow fiber yarn is 300nm, the hollow rate of the hollow fiber yarn is 70%, and the fiber strength is 15.4 CN/dt.
Example 2
A preparation method of high-strength hollow polypropylene fiber comprises the following steps:
step 1, adding ethyl cellulose into 1L of absolute ethyl alcohol, performing ultrasonic dispersion to form a solution, then adding ammonium carbonate, and uniformly stirring to form a suspension; the concentration of the ethyl cellulose in the absolute ethyl alcohol is 10g/L, the ultrasonic frequency is 90kHz, the temperature is 50 ℃, the concentration of the ammonium carbonate in the absolute ethyl alcohol is 600g/L, the stirring speed is 2000r/min, and the stirring temperature is 40 ℃;
step 2, adding polypropylene into 1L of toluene, performing ultrasonic dispersion to form stable dissolved solution, and performing low-temperature ultrasonic dispersion on phenyltrichlorosilane to form mixed solution; the concentration of the polypropylene in toluene is 200g/L, the ultrasonic frequency of ultrasonic dispersion is 60kHz, the temperature is 80 ℃, the addition amount of the phenyl trichlorosilane is 30 percent of the mass of the polypropylene, the temperature of low-temperature ultrasonic is 10 ℃, and the ultrasonic frequency is 60 kHz;
step 3, distilling the mixed solution under reduced pressure for 60min to form viscous liquid; then taking the viscous liquid as a shell layer solution, taking the suspension as a core layer solution, carrying out constant-temperature spinning, and standing to form prefabricated fiber yarns; the pressure of the reduced pressure distillation is 0% of standard atmospheric pressure, the temperature is 120 ℃, the volume ratio of the shell layer solution to the core layer solution is 5, the feeding amount of the shell layer solution is 5mL/min, the temperature of the constant-temperature spinning is 100 ℃, the standing time is 40min, and the temperature is 90 ℃;
step 4, performing constant-temperature illumination standing treatment on the prefabricated fiber yarns to form hollow fiber yarns; the constant-temperature illumination standing temperature is 120 ℃, and the illumination intensity is 40W/cm2The illumination adopts infrared light.
The diameter of the hollow fiber filament is 900nm, the hollow rate of the hollow fiber filament is 30%, and the fiber strength is 18.6 CN/dt.
Example 3
A preparation method of high-strength hollow polypropylene fiber comprises the following steps:
step 1, adding ethyl cellulose into 1L of absolute ethyl alcohol, performing ultrasonic dispersion to form a solution, then adding ammonium carbonate, and uniformly stirring to form a suspension; the concentration of the ethyl cellulose in the absolute ethyl alcohol is 8g/L, the ultrasonic frequency is 70kHz, the temperature is 45 ℃, the concentration of the ammonium carbonate in the absolute ethyl alcohol is 400-600g/L, the stirring speed is 1500r/min, and the stirring temperature is 30 ℃;
step 2, adding polypropylene into 1L of toluene, performing ultrasonic dispersion to form stable dissolved solution, and performing low-temperature ultrasonic dispersion on phenyltrichlorosilane to form mixed solution; the concentration of the polypropylene in toluene is 150g/L, the ultrasonic frequency of ultrasonic dispersion is 50kHz, the temperature is 75 ℃, the adding amount of the phenyl trichlorosilane is 25 percent of the mass of the polypropylene, the temperature of low-temperature ultrasonic is 8 ℃, and the ultrasonic frequency is 50 kHz;
step 3, distilling the mixed solution under reduced pressure for 50min to form viscous liquid; then taking the viscous liquid as a shell layer solution, taking the suspension as a core layer solution, carrying out constant-temperature spinning, and standing to form prefabricated fiber yarns; the pressure of the reduced pressure distillation is 70% of the standard atmospheric pressure, the temperature is 115 ℃, the volume ratio of the shell layer solution to the core layer solution is 1, the feeding amount of the shell layer solution is 4mL/min, the temperature of the constant temperature spinning is 95 ℃, the standing time is 30min, and the temperature is 85 ℃;
step 4, performing constant-temperature illumination standing treatment on the prefabricated fiber yarns to form hollow fiber yarns; the constant-temperature illumination standing temperature is 110 ℃, and the illumination intensity is 30W/cm2The illumination adopts infrared light.
The diameter of the hollow fiber filament is 700nm, the hollow rate of the hollow fiber filament is 40%, and the fiber strength is 16.7 CN/dt.
In summary, the invention has the following advantages:
1. the invention solves the problem of insufficient strength of the existing polypropylene fiber, and greatly improves the stability of the strength of the polypropylene fiber by utilizing the stability of the silica structure.
2. According to the invention, the water vapor formed by decomposing ammonium carbonate and phenyl trichlorosilane are utilized to form a matching hydrolysis effect, and an in-situ hydrolysis effect is formed, so that the stability is greatly improved.
3. The invention utilizes the light permeability of the silica structure and the air permeability of the silica gap to decompose the ethyl cellulose, thereby removing impurities in the hollow layer.
It should be understood that the detailed description of the invention is merely illustrative of the invention and is not intended to limit the invention to the specific embodiments described. It will be appreciated by those skilled in the art that the present invention may be modified or substituted equally as well to achieve the same technical result; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (9)
1. A preparation method of high-strength hollow polypropylene fiber is characterized by comprising the following steps:
step 1, adding ethyl cellulose into absolute ethyl alcohol, performing ultrasonic dispersion to form a solution, then adding ammonium carbonate, and uniformly stirring to form a suspension;
step 2, adding polypropylene into toluene, performing ultrasonic dispersion to form stable dissolved solution, and performing low-temperature ultrasonic dispersion on phenyltrichlorosilane to form mixed solution;
step 3, distilling the mixed solution under reduced pressure for 30-60min to form viscous liquid; then taking the viscous liquid as a shell layer solution, taking the suspension as a core layer solution, carrying out constant-temperature spinning, and standing to form prefabricated fiber yarns;
and 4, carrying out constant-temperature illumination standing treatment on the prefabricated fiber yarns to form the hollow fiber yarns.
2. The method for preparing high strength hollow polypropylene fiber according to claim 1, wherein the concentration of ethyl cellulose in the absolute ethanol in the step 1 is 5-10g/L, the frequency of ultrasonic is 60-90kHz, and the temperature is 40-50 ℃.
3. The method for preparing high strength hollow polypropylene fiber according to claim 1, wherein the concentration of ammonium carbonate in the anhydrous ethanol in the step 1 is 400-600g/L, the stirring speed is 1000-2000r/min, and the stirring temperature is 20-40 ℃.
4. The method for preparing high strength hollow polypropylene fiber according to claim 1, wherein the concentration of polypropylene in toluene in step 2 is 100-200g/L, the ultrasonic frequency of ultrasonic dispersion is 40-60kHz, and the temperature is 70-80 ℃.
5. The method for preparing high-strength hollow polypropylene fiber according to claim 1, wherein the amount of phenyltrichlorosilane added in step 2 is 20-30% of the mass of polypropylene, the temperature of low-temperature ultrasound is 5-10 ℃, and the ultrasound frequency is 40-60 kHz.
6. The method for preparing a high-strength hollow polypropylene fiber as claimed in claim 1, wherein the diameter of the hollow fiber is 300-900 nm.
7. The method for preparing a high strength hollow polypropylene fiber according to claim 1, wherein the hollow ratio of the hollow fiber yarn is 30 to 70%.
8. The method for preparing a high strength hollow polypropylene fiber according to claim 1, wherein the hollow fiber filaments are woven to form a nonwoven fabric.
9. The method for preparing a high-strength hollow polypropylene fiber according to claim 8, wherein the nonwoven fabric is used for a mask.
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| CN202110101846.4A CN112941653A (en) | 2021-01-26 | 2021-01-26 | Preparation method of high-strength hollow polypropylene fiber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262565A (en) * | 2021-04-19 | 2021-08-17 | 陈志丽 | High-strength air filter core material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07207072A (en) * | 1993-12-03 | 1995-08-08 | Tokuyama Corp | Polyolefin composition |
| CN106559999A (en) * | 2013-06-12 | 2017-04-05 | 金伯利-克拉克环球有限公司 | Hollow porous fiber |
| CN109457319A (en) * | 2018-11-14 | 2019-03-12 | 绍兴文理学院 | A kind of preparation method of the porous staple fiber of polypropylene |
| CN109594140A (en) * | 2018-12-24 | 2019-04-09 | 广东蒙泰高新纤维股份有限公司 | A kind of functional hollow polypropylene fiber and preparation method thereof |
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- 2021-01-26 CN CN202110101846.4A patent/CN112941653A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07207072A (en) * | 1993-12-03 | 1995-08-08 | Tokuyama Corp | Polyolefin composition |
| CN106559999A (en) * | 2013-06-12 | 2017-04-05 | 金伯利-克拉克环球有限公司 | Hollow porous fiber |
| CN109457319A (en) * | 2018-11-14 | 2019-03-12 | 绍兴文理学院 | A kind of preparation method of the porous staple fiber of polypropylene |
| CN109594140A (en) * | 2018-12-24 | 2019-04-09 | 广东蒙泰高新纤维股份有限公司 | A kind of functional hollow polypropylene fiber and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262565A (en) * | 2021-04-19 | 2021-08-17 | 陈志丽 | High-strength air filter core material and preparation method thereof |
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Application publication date: 20210611 |