CN111188101A - Manufacturing method of wear-resistant environmental sanitation brush filaments - Google Patents
Manufacturing method of wear-resistant environmental sanitation brush filaments Download PDFInfo
- Publication number
- CN111188101A CN111188101A CN202010083207.5A CN202010083207A CN111188101A CN 111188101 A CN111188101 A CN 111188101A CN 202010083207 A CN202010083207 A CN 202010083207A CN 111188101 A CN111188101 A CN 111188101A
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- wear
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- environmental sanitation
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Classifications
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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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
- A46D1/02—Bristles details
- A46D1/0207—Bristles characterised by the choice of material, e.g. metal
-
- 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
-
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
-
- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/18—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from other substances
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/40—Fibres of carbon
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/35—Abrasion, pilling or fibrillation resistance
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Manufacturing & Machinery (AREA)
- Brushes (AREA)
Abstract
The invention discloses a manufacturing method of wear-resistant environmental sanitation brush filaments, which comprises the following operation steps: weighing polyamide fiber, metal fiber and carbon fiber, placing into an ultrasonic oscillator, oscillating and mixing, sequentially adding silicon oxide, and continuously oscillating and mixing for 25 min; adding polyethylene resin and polypropylene into the mixed raw materials, placing into a cooking pot, heating in a water-proof manner for 15-25min, keeping the temperature at 55-65 ℃, continuously stirring in the heating process, and sequentially adding 0.8-1.3 parts of coupling agent and lubricant in the stirring process; putting the mixed materials into a double-screw extruder after vacuum drying, mixing and extruding, putting the extruded mixture into a traction machine after cooling, and drawing the mixed raw materials into finished brush wires; weighing silicon oxide, aluminum, titanium, an adhesive and an anti-aging agent, putting the mixture into a high-speed mixer for mixing for 5min, then adding deionized water for continuously mixing for 3min, putting the obtained mixed slurry into a spraying machine for spraying the surface of the brush wire, and obtaining the wear-resistant environmental sanitation brush wire.
Description
Technical Field
The invention relates to the technical field of environmental sanitation brushes, in particular to a manufacturing method of wear-resistant environmental sanitation brush filaments.
Background
The environmental sanitation brush is characterized in that holes are drilled on a cut PP disc at a certain angle (∠ 135 degrees), cut flat steel wires or PP brush wires and nylon wires are folded in half and then are inserted in series, and the brush is arranged on a municipal sanitation vehicle and used for cleaning streets, cleaning snow and the like.
Disclosure of Invention
The invention aims to provide a method for manufacturing wear-resistant environmental sanitation brush filaments, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a manufacturing method of wear-resistant environmental sanitation brush filaments comprises the following operation steps:
s1: the raw material ratio is as follows: weighing 65-75 parts of polyamide fiber, 4-6 parts of metal fiber and 3-4 parts of carbon fiber according to the mass ratio, placing the polyamide fiber, the metal fiber and the carbon fiber into an ultrasonic oscillator for oscillation mixing, sequentially adding 2-3 parts of silicon oxide after mixing, and continuing oscillation mixing for 25 min;
s2: raw material treatment: putting the mixed raw materials in the step S1) into a reaction container, adding 8-13 parts of polyethylene resin and 5-8 parts of polypropylene, putting into a cooking pot, heating in a water-proof manner for 15-25min, keeping the temperature at 55-65 ℃, continuously stirring in the heating process, and sequentially adding 0.8-1.3 parts of coupling agent and 1-2 parts of lubricant in the stirring process;
s3: processing brush wires: putting the mixed materials into a double-screw extruder after vacuum drying, mixing and extruding, putting the extruded mixture into a traction machine after cooling, and drawing the mixed raw materials into finished brush wires;
s4: processing a wear-resistant layer: weighing 2-3 parts of silicon oxide, 1-3 parts of aluminum, 0.5-1.5 parts of titanium, 1-3 parts of adhesive and 0.5-1.2 parts of anti-aging agent according to the mass ratio, putting the materials into a high-speed mixer to mix for 5min, then adding 8-10 parts of deionized water to continue mixing for 3min, putting the obtained mixed slurry into a spraying machine to spray the surface of brush filaments, and obtaining the wear-resistant environmental sanitation brush filaments.
Preferably, the coupling agent is a silane coupling agent, and one or a mixture of more than two of vinyltriethoxysilane, vinyltrimethoxysilane and vinyltris (β -methoxyethoxy) silane is adopted.
Preferably, the metal fiber is formed by mixing iron-chromium-aluminum alloy and temperature-resistant alloy.
Preferably, the diameter of the finished brush wire is 0.4-1.6mm, and the thickness of the wear-resistant layer is 0.05 mm.
Preferably, after the prepared wear-resistant environmental sanitation brush wire is wound in a winding device, the brush wire is cut into a standard length of 4.5-5cm, and the cut brush wire is bundled and packaged by a binding tape.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the wear-resisting property of the brush wire is enhanced by adding the polyamide fiber, the metal fiber, the carbon fiber and the like when the brush wire is processed, meanwhile, through scientific proportioning, the wear-resisting property of the brush wire is improved as much as possible within the range of the minimum addition amount, and the wear-resisting coating is sprayed on the outer layer of the processed brush wire, so that the aging and the abrasion of the brush wire are prevented through the adhesion of the metal powder and the anti-aging agent, and the product quality of the brush wire is improved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a manufacturing method of wear-resistant environmental sanitation brush filaments comprises the following operation steps:
s1: the raw material ratio is as follows: weighing 65 parts of polyamide fiber, 5 parts of metal fiber and 3 parts of carbon fiber according to the mass ratio, placing the polyamide fiber, the metal fiber and the carbon fiber into an ultrasonic oscillator for oscillation mixing, sequentially adding 2 parts of silicon oxide after mixing, and continuing oscillation mixing for 25 min;
s2: raw material treatment: putting the mixed raw materials in the step S1) into a reaction container, adding 8 parts of polyethylene resin and 5 parts of polypropylene, putting into a cooking pot, heating in a water-proof manner for 15-25min, keeping the temperature at 55-65 ℃, continuously stirring in the heating process, and sequentially adding 0.8 part of coupling agent and 1 part of lubricant in the stirring process;
s3: processing brush wires: putting the mixed materials into a double-screw extruder after vacuum drying, mixing and extruding, putting the extruded mixture into a traction machine after cooling, and drawing the mixed raw materials into finished brush wires;
s4: processing a wear-resistant layer: weighing 2 parts of silicon oxide, 1 part of aluminum, 0.5 part of titanium, 2 parts of adhesive and 0.8 part of anti-aging agent according to the mass ratio, putting the materials into a high-speed mixer for mixing for 5min, then adding 8 parts of deionized water for continuously mixing for 3min, putting the obtained mixed slurry into a spraying machine for spraying the surface of the brush wire, and obtaining the wear-resistant environmental sanitation brush wire.
Further, the coupling agent is a silane coupling agent, and is one or a mixture of more than two of vinyltriethoxysilane, vinyltrimethoxysilane and vinyltris (β -methoxyethoxy) silane.
Furthermore, the metal fiber is formed by mixing iron-chromium-aluminum alloy and temperature-resistant alloy.
Furthermore, the diameter of the finished product of the brush wire is 0.4-1.6mm, and the thickness of the wear-resistant layer is 0.05 mm.
Further, after the prepared wear-resistant environmental sanitation brush wire is wound, the brush wire is cut into a standard length of 4.5-5cm, and the cut brush wire is bundled and packaged by a binding tape.
Example 2:
a manufacturing method of wear-resistant environmental sanitation brush filaments comprises the following operation steps:
s1: the raw material ratio is as follows: weighing 65 parts of polyamide fiber, 5 parts of metal fiber and 3 parts of carbon fiber according to the mass ratio, placing the polyamide fiber, the metal fiber and the carbon fiber into an ultrasonic oscillator for oscillation mixing, sequentially adding 2 parts of silicon oxide after mixing, and continuing oscillation mixing for 25 min;
s2: raw material treatment: putting the mixed raw materials in the step S1) into a reaction container, adding 10 parts of polyethylene resin and 8 parts of polypropylene, putting into a cooking pot, heating in a water-proof manner for 15-25min, keeping the temperature at 55-65 ℃, continuously stirring in the heating process, and sequentially adding 1 part of coupling agent and 1.5 parts of lubricant in the stirring process;
s3: processing brush wires: putting the mixed materials into a double-screw extruder after vacuum drying, mixing and extruding, putting the extruded mixture into a traction machine after cooling, and drawing the mixed raw materials into finished brush wires;
s4: processing a wear-resistant layer: weighing 2 parts of silicon oxide, 1 part of aluminum, 0.5 part of titanium, 2 parts of adhesive and 0.8 part of anti-aging agent according to the mass ratio, putting the materials into a high-speed mixer for mixing for 5min, then adding 8 parts of deionized water for continuously mixing for 3min, putting the obtained mixed slurry into a spraying machine for spraying the surface of the brush wire, and obtaining the wear-resistant environmental sanitation brush wire.
Example 2 is the same as the above examples in material and processing steps, but the ratio of the two is different.
Example 3:
a manufacturing method of wear-resistant environmental sanitation brush filaments comprises the following operation steps:
s1: the raw material ratio is as follows: weighing 65 parts of polyamide fiber, 5 parts of metal fiber and 3 parts of carbon fiber according to the mass ratio, placing the polyamide fiber, the metal fiber and the carbon fiber into an ultrasonic oscillator for oscillation mixing, sequentially adding 2 parts of silicon oxide after mixing, and continuing oscillation mixing for 25 min;
s2: raw material treatment: putting the mixed raw materials in the step S1) into a reaction container, adding 8 parts of polyethylene resin and 5 parts of polypropylene, putting into a cooking pot, heating in a water-proof manner for 15-25min, keeping the temperature at 55-65 ℃, continuously stirring in the heating process, and sequentially adding 0.8 part of coupling agent and 1 part of lubricant in the stirring process;
s3: processing brush wires: putting the mixed materials into a double-screw extruder after vacuum drying, mixing and extruding, putting the extruded mixture into a traction machine after cooling, and drawing the mixed raw materials into finished brush wires;
s4: processing a wear-resistant layer: weighing 2.5 parts of silicon oxide, 2 parts of aluminum, 0.9 part of titanium, 1.5 parts of adhesive and 1.2 parts of anti-aging agent according to the mass ratio, putting the materials into a high-speed mixer for mixing for 5min, then adding 10 parts of deionized water for continuously mixing for 3min, putting the obtained mixed slurry into a spraying machine for spraying the surface of a brush wire to prepare the wear-resistant environmental sanitation brush wire
Example 3 is the same as the above examples in material and processing steps, but the ratio of the two is different.
The wear-resistant brush filaments of the environmental sanitation brush prepared according to the mixture ratio and the preparation method of the embodiment 1-3 are tested for the aspects of wear resistance, deformation resistance, toughness and the like, and the results are evaluated by A, B, C, D, and are shown in the following table:
| examples | Wear resistance | Resistance to deformation | Toughness of |
| Example 1 | A | A | A |
| Example 2 | B | B | A |
| Example 3 | B | A | C |
As can be seen from the table, the wear-resistant brush wire for the environmental sanitation brush, which is prepared according to the proportion and the preparation method in the embodiment 1, has better effects on the aspects of wear resistance, deformation resistance and toughness; the wear-resistant environmental sanitation brush wire prepared according to the proportion and the preparation method in the embodiment 2 has better effect on the toughness aspect; the wear-resistant environmental sanitation brush wire prepared according to the proportion and the preparation method in the embodiment 3 has better effect on the deformation resistance.
According to the invention, the wear-resisting property of the brush wire is enhanced by adding the polyamide fiber, the metal fiber, the carbon fiber and the like when the brush wire is processed, meanwhile, through scientific proportioning, the wear-resisting property of the brush wire is improved as much as possible within the range of the minimum addition amount, and the wear-resisting coating is sprayed on the outer layer of the processed brush wire, so that the aging and the abrasion of the brush wire are prevented through the adhesion of the metal powder and the anti-aging agent, and the product quality of the brush wire is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A manufacturing method of wear-resistant environmental sanitation brush filaments is characterized by comprising the following steps: the method comprises the following operation steps:
s1: the raw material ratio is as follows: weighing 65-75 parts of polyamide fiber, 4-6 parts of metal fiber and 3-4 parts of carbon fiber according to the mass ratio, placing the polyamide fiber, the metal fiber and the carbon fiber into an ultrasonic oscillator for oscillation mixing, sequentially adding 2-3 parts of silicon oxide after mixing, and continuing oscillation mixing for 25 min;
s2: raw material treatment: putting the mixed raw materials in the step S1) into a reaction container, adding 8-13 parts of polyethylene resin and 5-8 parts of polypropylene, putting into a cooking pot, heating in a water-proof manner for 15-25min, keeping the temperature at 55-65 ℃, continuously stirring in the heating process, and sequentially adding 0.8-1.3 parts of coupling agent and 1-2 parts of lubricant in the stirring process;
s3: processing brush wires: putting the mixed materials into a double-screw extruder after vacuum drying, mixing and extruding, putting the extruded mixture into a traction machine after cooling, and drawing the mixed raw materials into finished brush wires;
s4: processing a wear-resistant layer: weighing 2-3 parts of silicon oxide, 1-3 parts of aluminum, 0.5-1.5 parts of titanium, 1-3 parts of adhesive and 0.5-1.2 parts of anti-aging agent according to the mass ratio, putting the materials into a high-speed mixer to mix for 5min, then adding 8-10 parts of deionized water to continue mixing for 3min, putting the obtained mixed slurry into a spraying machine to spray the surface of brush filaments, and obtaining the wear-resistant environmental sanitation brush filaments.
2. The method for manufacturing the wear-resistant environmental sanitation brush wire according to claim 1, wherein the coupling agent is silane coupling agent, and one or more than two of vinyltriethoxysilane, vinyltrimethoxysilane and vinyltris (β -methoxyethoxy) silane are used as the coupling agent.
3. The method for manufacturing the wear-resistant environmental sanitation brush filaments according to claim 1, wherein the method comprises the following steps: the metal fiber is formed by mixing iron-chromium-aluminum alloy and temperature-resistant alloy.
4. The method for manufacturing the wear-resistant environmental sanitation brush filaments according to claim 1, wherein the method comprises the following steps: the diameter of the finished product brush wire is 0.4-1.6mm, and the thickness of the wear-resistant layer is 0.05 mm.
5. The method for manufacturing the wear-resistant environmental sanitation brush filaments according to claim 1, wherein the method comprises the following steps: after the prepared wear-resistant environmental sanitation brush wire is wound, the brush wire is cut into a standard length of 4.5-5cm, and the cut brush wire is bundled and packaged by a binding tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010083207.5A CN111188101A (en) | 2020-02-08 | 2020-02-08 | Manufacturing method of wear-resistant environmental sanitation brush filaments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010083207.5A CN111188101A (en) | 2020-02-08 | 2020-02-08 | Manufacturing method of wear-resistant environmental sanitation brush filaments |
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| Publication Number | Publication Date |
|---|---|
| CN111188101A true CN111188101A (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010083207.5A Withdrawn CN111188101A (en) | 2020-02-08 | 2020-02-08 | Manufacturing method of wear-resistant environmental sanitation brush filaments |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774505A (en) * | 2021-09-14 | 2021-12-10 | 徐工集团工程机械股份有限公司 | Polypropylene fiber, preparation method and sweeper |
-
2020
- 2020-02-08 CN CN202010083207.5A patent/CN111188101A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774505A (en) * | 2021-09-14 | 2021-12-10 | 徐工集团工程机械股份有限公司 | Polypropylene fiber, preparation method and sweeper |
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Application publication date: 20200522 |
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