CN115648755A - Breathable high-strength composite non-woven fabric and preparation method thereof - Google Patents
Breathable high-strength composite non-woven fabric and preparation method thereof Download PDFInfo
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Abstract
A breathable high-strength composite non-woven fabric and a preparation method thereof comprise the following steps: s1: adding polypropylene, polyester fiber, polyurethane, sodium polyacrylate, sodium carboxymethylcellulose, polydimethylsiloxane and hexadecyl trimethyl ammonium bromide into a double-screw extruder, and melting and extruding into a mixed melt; s2: metering, spinning, drafting, lapping and reinforcing the mixed melt to obtain non-woven fabric; cutting a first non-woven fabric and a second non-woven fabric from the non-woven fabric; s3: soaking the first non-woven fabric and the second non-woven fabric into the nano aluminum oxide liquid for 24-36h, and then soaking into the modified carbon fiber liquid for 24-48h; s4: and (4) extruding and compounding the first non-woven fabric and the second non-woven fabric obtained in the step (S3) into fabric, drying at 50-60 ℃, cutting edges, and rolling to obtain the breathable high-strength composite non-woven fabric. The preparation process is environment-friendly, simple and reliable, and the obtained non-woven fabric has good air permeability and strength and strong applicability.
Description
Technical Field
The invention relates to the technical field of non-woven fabrics, in particular to a breathable high-strength composite non-woven fabric and a preparation method thereof.
Background
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. At present, non-woven fabrics are widely applied to medical and sanitary articles such as gauze and wound dressings and sanitary cleaning materials such as cosmetic cotton and facial masks, the use scenes of the two aspects are clung to the skin or the mucous membrane of a person, and the skin and the mucous membrane are the first health barriers of the human body, so that the pure cotton non-woven fabrics serving as base materials of the two aspects have higher requirements, namely the pure cotton non-woven fabrics have the requirements of only enough comfort level and better air permeability, mechanical property and the like.
Disclosure of Invention
In view of this, the present invention provides an air-permeable high-strength composite non-woven fabric and a method for making the same, wherein the making process is environment-friendly, simple and reliable, and the obtained composite non-woven fabric has good air permeability and strength and strong applicability.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of the breathable high-strength composite non-woven fabric comprises the following steps:
s1: adding polypropylene, polyester fiber, polyurethane, sodium polyacrylate, sodium carboxymethylcellulose, polydimethylsiloxane and hexadecyl trimethyl ammonium bromide into a double-screw extruder, and melting and extruding into a mixed melt;
s2: metering, spinning, drafting, lapping and reinforcing the mixed melt to obtain non-woven fabric; cutting a first non-woven fabric and a second non-woven fabric from the non-woven fabric;
s3: soaking the first non-woven fabric and the second non-woven fabric in a nano aluminum oxide liquid for 24-36h, and then soaking the first non-woven fabric and the second non-woven fabric in a modified carbon fiber liquid for 24-48h;
s4: and (4) extruding and compounding the first non-woven fabric and the second non-woven fabric obtained in the step (S3) into fabric, drying at 50-60 ℃, cutting edges, and rolling to obtain the breathable high-strength composite non-woven fabric.
Preferably, the step S3 of immersing into the modified carbon fiber liquid includes: the method comprises the steps of firstly soaking the carbon fiber in the acyl chlorination carbon fiber solution for 12-24 hours, and then soaking the carbon fiber in the coupling carbon fiber solution for 12-24 hours.
Preferably, the weight ratio of the polypropylene to the polyester to the polyurethane to the sodium polyacrylate to the sodium carboxymethyl cellulose to the polydimethylsiloxane to the cetyltrimethylammonium bromide is 1.
Preferably, the preparation method of the nano aluminum oxide liquid in the step S3 specifically comprises the following steps: mixing nano aluminum oxide, chitosan and 75% volume fraction acetic acid solution according to the weight part ratio of 2.
Preferably, the preparation method of the acyl chlorination carbon fiber liquid comprises the following steps:
adding the carbon fiber into a sulfuric acid solution with the volume fraction of 75% to obtain acidified carbon fiber;
adding the acidified carbon fiber and thionyl chloride into a dimethylformamide solution, reacting for 24-48h at 70-80 ℃ under the protection of nitrogen, and adding tetrahydrofuran to obtain the carbon fiber liquid of acyl chloride.
Preferably, the weight part ratio of the carbon fiber to the sulfuric acid solution is 1; the weight ratio of the acidified carbon fiber to thionyl chloride to the dimethylformamide solution to tetrahydrofuran is 1.
Preferably, the preparation method of the coupling carbon fiber liquid comprises the following steps: mixing carbon fiber, a silane coupling agent, sodium dodecyl sulfate and 75% of graphene oxide solution by mass percent, and stirring and reacting at 60-70 ℃ for 12-24h to obtain a coupled carbon fiber solution.
Preferably, the weight ratio of the carbon fiber to the silane coupling agent to the sodium dodecyl sulfate to the graphene oxide solution is 1.
The invention also provides the breathable high-strength composite non-woven fabric prepared by the preparation method.
Has the advantages that: according to the invention, the grafting dispersibility of nano aluminum oxide liquid nano particles enables the dispersed grafted nano particles to form pores formed by particle accumulation on non-woven fabrics, and simultaneously increases the separation distance between two layers of non-woven fabrics, then the nano aluminum oxide liquid coating is firstly crosslinked through acyl chloride carbon fiber liquid, and then the fibers are crosslinked through coupling carbon fiber liquid, so that the specific surface area and the bonding force of the fibers are effectively improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention. In addition, the raw materials and equipment of the invention can be obtained from the market and are not listed.
The first embodiment is as follows:
a preparation method of the breathable high-strength composite non-woven fabric comprises the following steps:
s1: adding polypropylene, polyester fibers, polyurethane, sodium polyacrylate, sodium carboxymethylcellulose, polydimethylsiloxane and cetyltrimethylammonium bromide into a twin-screw extruder in a ratio of 1;
s2: metering, spinning, drafting, lapping and reinforcing the mixed melt to obtain non-woven fabric; cutting a first non-woven fabric and a second non-woven fabric from the non-woven fabric;
s3: soaking the first non-woven fabric and the second non-woven fabric into the nano aluminum oxide liquid for 36 hours, and then soaking the first non-woven fabric and the second non-woven fabric into the modified carbon fiber liquid for 48 hours, namely, soaking the first non-woven fabric and the second non-woven fabric into the acyl chlorination carbon fiber liquid for 24 hours, and then soaking the first non-woven fabric and the second non-woven fabric into the coupling carbon fiber liquid for 24 hours;
the preparation method of the nano aluminum oxide liquid comprises the following specific steps: mixing nano aluminum oxide, chitosan and 75% by volume of acetic acid solution in a weight ratio of 2;
the preparation method of the acyl chlorination carbon fiber liquid comprises the following steps:
mixing the carbon fiber with a sulfuric acid solution with a volume fraction of 75% in a weight ratio of 1; mixing the acidified carbon fiber, thionyl chloride and a dimethylformamide solution according to the following weight part ratio of 1;
the preparation method of the coupling carbon fiber liquid comprises the following specific steps: mixing carbon fiber, a silane coupling agent, sodium dodecyl sulfate and a graphene oxide solution with the mass fraction of 75% in a weight ratio of 1;
s4: and (4) extruding and compounding the first non-woven fabric and the second non-woven fabric obtained in the step (S3) into a fabric, drying at 60 ℃, cutting edges, and rolling to obtain the breathable high-strength composite non-woven fabric.
Example two:
a preparation method of the breathable high-strength composite non-woven fabric comprises the following steps:
s1: adding polypropylene, polyester fibers, polyurethane, sodium polyacrylate, sodium carboxymethylcellulose, polydimethylsiloxane and cetyltrimethylammonium bromide into a twin-screw extruder in a ratio of 1;
s2: metering, spinning, drafting, lapping and reinforcing the mixed melt to obtain non-woven fabric; cutting a first non-woven fabric and a second non-woven fabric from the non-woven fabric;
s3: the first non-woven fabric and the second non-woven fabric are soaked in the nano aluminum oxide liquid for 24 hours and then soaked in the modified carbon fiber liquid for 24 hours, namely, the first non-woven fabric and the second non-woven fabric are soaked in the acyl chlorination carbon fiber liquid for 12 hours and then soaked in the coupling carbon fiber liquid for 12 hours;
the preparation method of the nano aluminum oxide liquid comprises the following steps: mixing nano aluminum oxide, chitosan and 75% by volume of acetic acid solution in a weight ratio of 2;
the preparation method of the acyl chlorination carbon fiber liquid comprises the following steps:
mixing the carbon fiber with a sulfuric acid solution with a volume fraction of 75% according to a weight part ratio of 1; mixing the acidified carbon fiber, thionyl chloride and a dimethylformamide solution according to the weight ratio of 1;
the preparation method of the coupling carbon fiber liquid comprises the following steps: mixing carbon fiber, a silane coupling agent, sodium dodecyl sulfate and a 75% graphene oxide solution in a weight ratio of 1;
s4: and (4) extruding and compounding the first non-woven fabric and the second non-woven fabric obtained in the step (S3) into fabric, drying at 50 ℃, cutting edges, and rolling to obtain the breathable high-strength composite non-woven fabric.
Example three:
a preparation method of the breathable high-strength composite non-woven fabric comprises the following steps:
s1: adding polypropylene, polyester fibers, polyurethane, sodium polyacrylate, sodium carboxymethylcellulose, polydimethylsiloxane and cetyltrimethylammonium bromide into a twin-screw extruder in a ratio of 1;
s2: metering, spinning, drafting, lapping and reinforcing the mixed melt to obtain non-woven fabric; cutting a first non-woven fabric and a second non-woven fabric from the non-woven fabric;
s3: soaking the first non-woven fabric and the second non-woven fabric into the nano aluminum oxide liquid for 30 hours, and then soaking into the modified carbon fiber liquid for 36 hours, namely, soaking into the acyl chlorination carbon fiber liquid for 18 hours, and then soaking into the coupling carbon fiber liquid for 18 hours;
the preparation method of the nano aluminum oxide liquid comprises the following specific steps: mixing nano aluminum oxide, chitosan and 75% volume fraction acetic acid solution in a weight ratio of (2);
the preparation method of the acyl chlorination carbon fiber liquid comprises the following specific steps:
mixing the carbon fiber with a sulfuric acid solution with a volume fraction of 75% in a weight ratio of 1; mixing the acidified carbon fiber, thionyl chloride and a dimethylformamide solution according to the weight ratio of 1;
the preparation method of the coupling carbon fiber liquid comprises the following specific steps: mixing carbon fiber, a silane coupling agent, sodium dodecyl sulfate and a 75% graphene oxide solution in a weight ratio of 1;
s4: and (4) extruding and compounding the first non-woven fabric and the second non-woven fabric obtained in the step (S3) into fabric, drying at 55 ℃, cutting edges, and rolling to obtain the breathable high-strength composite non-woven fabric.
Comparative example 1:
the comparative example 1 and the example 1 have basically the same components in parts by weight and preparation method, except that nano aluminum oxide liquid is not used, and the preparation method specifically comprises the following steps:
a preparation method of the breathable high-strength composite non-woven fabric comprises the following steps:
s1: adding polypropylene, polyester fibers, polyurethane, sodium polyacrylate, sodium carboxymethylcellulose, polydimethylsiloxane and cetyltrimethylammonium bromide into a twin-screw extruder in a ratio of 1;
s2: metering, spinning, drafting, lapping and reinforcing the mixed melt to obtain non-woven fabric; cutting a first non-woven fabric and a second non-woven fabric from the non-woven fabric;
s3: soaking the first non-woven fabric and the second non-woven fabric in the modified carbon fiber liquid for 48 hours, namely soaking the first non-woven fabric and the second non-woven fabric in the acyl chloride carbon fiber liquid for 24 hours, and then soaking the first non-woven fabric and the second non-woven fabric in the coupling carbon fiber liquid for 24 hours;
the preparation method of the acyl chlorination carbon fiber liquid comprises the following specific steps:
mixing the carbon fiber with a sulfuric acid solution with a volume fraction of 75% in a weight ratio of 1; mixing the acidified carbon fiber, thionyl chloride and a dimethylformamide solution according to the weight ratio of 1;
the preparation method of the coupling carbon fiber liquid comprises the following specific steps: mixing carbon fiber, a silane coupling agent, sodium dodecyl sulfate and a graphene oxide solution with the mass fraction of 75% in a weight ratio of 1;
s4: and (4) extruding and compounding the first non-woven fabric and the second non-woven fabric obtained in the step (S3) into fabric, drying at 60 ℃, cutting edges, and rolling to obtain the breathable high-strength composite non-woven fabric.
Comparative example 2:
comparative example 2 is substantially the same as example 1 in terms of the components and the preparation method thereof, except that no modified carbon fiber liquid is used, specifically:
a preparation method of the breathable high-strength composite non-woven fabric comprises the following steps:
s1: adding polypropylene, polyester fibers, polyurethane, sodium polyacrylate, sodium carboxymethylcellulose, polydimethylsiloxane and hexadecyl trimethyl ammonium bromide into a twin-screw extruder in a ratio of (1 part by weight);
s2: metering, spinning, drafting, lapping and reinforcing the mixed melt to obtain non-woven fabric; cutting a first non-woven fabric and a second non-woven fabric from the non-woven fabric;
s3: soaking the first non-woven fabric and the second non-woven fabric in the nano aluminum oxide liquid for 36 hours;
the preparation method of the nano aluminum oxide liquid comprises the following specific steps: mixing nano aluminum oxide, chitosan and 75% by volume of acetic acid solution in a weight ratio of 2;
s4: and (4) extruding and compounding the first non-woven fabric and the second non-woven fabric obtained in the step (S3) into a fabric, drying at 60 ℃, cutting edges, and rolling to obtain the breathable high-strength composite non-woven fabric.
The performance tests were performed on the air-permeable, medical-grade air-permeable nonwoven fabrics of examples 1 to 3 and the air-permeable, high-strength composite nonwoven fabrics of comparative examples 1 to 2, and the test results are shown in Table 1.
The test method comprises the following steps: (1) air permeability: the measurement is carried out according to GB/T5453-1997 determination of the air permeability of textile fabrics. (2) breaking strength: according to GB/T3923.1-2013 part 1 of tensile properties of textile fabrics: measurement of breaking strength and breaking elongation (bar sampling method) was performed.
TABLE 1
| Test item | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Is commercially available |
| Air permeability mm/s | 540 | 520 | 540 | 280 | 320 | 480 |
| Breaking strength/N | 230 | 240 | 230 | 130 | 150 | 210 |
As can be seen from the above table, the air permeability and strength of examples 1 to 3 are improved as compared with those of the commercially available nonwoven fabrics and comparative examples 1 to 2, indicating that the present invention can improve not only the air permeability but also the strength of the composite nonwoven fabric.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The preparation method of the breathable high-strength composite non-woven fabric is characterized by comprising the following steps of:
s1: adding polypropylene, polyester fiber, polyurethane, sodium polyacrylate, sodium carboxymethylcellulose, polydimethylsiloxane and hexadecyl trimethyl ammonium bromide into a double-screw extruder, and melting and extruding into a mixed melt;
s2: metering, spinning, drafting, lapping and reinforcing the mixed melt to obtain non-woven fabric; cutting a first non-woven fabric and a second non-woven fabric from the non-woven fabric;
s3: soaking the first non-woven fabric and the second non-woven fabric in a nano aluminum oxide liquid for 24-36h, and then soaking the first non-woven fabric and the second non-woven fabric in a modified carbon fiber liquid for 24-48h;
s4: and (4) extruding and compounding the first non-woven fabric and the second non-woven fabric obtained in the step (S3) into fabric, drying at 50-60 ℃, cutting edges, and rolling to obtain the breathable high-strength composite non-woven fabric.
2. The method for preparing the air-permeable high-strength composite non-woven fabric according to claim 1, wherein the step S3 of soaking into the modified carbon fiber liquid comprises: soaking the carbon fiber in acyl chloride carbon fiber liquid for 12-24 hr, and soaking the carbon fiber in coupling carbon fiber liquid for 12-24 hr.
3. The method for preparing the air-permeable high-strength composite non-woven fabric according to claim 1, wherein the weight ratio of the polypropylene, the polyester fiber, the polyurethane, the sodium polyacrylate, the sodium carboxymethyl cellulose, the polydimethylsiloxane and the hexadecyl trimethyl ammonium bromide is 1.
4. The method for preparing the breathable high-strength composite non-woven fabric according to claim 1, wherein the method for preparing the nano aluminum oxide liquid in the step S3 specifically comprises the following steps: mixing nano aluminum oxide, chitosan and 75% volume fraction acetic acid solution according to the weight ratio of (2).
5. The method for preparing the air-permeable high-strength composite non-woven fabric according to claim 2, wherein the method for preparing the acyl chloride carbon fiber liquid specifically comprises the following steps:
adding the carbon fiber into a sulfuric acid solution with the volume fraction of 75% to obtain acidified carbon fiber;
adding the acidified carbon fiber and thionyl chloride into a dimethylformamide solution, reacting for 24-48h at 70-80 ℃ under the protection of nitrogen, and adding tetrahydrofuran to obtain the carbon fiber liquid of acyl chloride.
6. The method for preparing the breathable high-strength composite non-woven fabric according to claim 5, wherein the ratio of the carbon fibers to the sulfuric acid solution in parts by weight is 1; the weight ratio of the acidified carbon fiber to thionyl chloride to the dimethylformamide solution to tetrahydrofuran is 1.
7. The method for preparing the air-permeable high-strength composite non-woven fabric according to claim 2, wherein the method for preparing the coupling carbon fiber liquid specifically comprises the following steps: mixing carbon fiber, a silane coupling agent, sodium dodecyl sulfate and 75% of graphene oxide solution by mass percent, and stirring and reacting at 60-70 ℃ for 12-24h to obtain a coupled carbon fiber solution.
8. The method for preparing the breathable high-strength composite non-woven fabric according to claim 7, wherein the weight ratio of the carbon fibers, the silane coupling agent, the sodium dodecyl sulfate and the graphene oxide solution is 1.
9. A breathable high-strength composite nonwoven fabric produced by the production method according to any one of claims 1 to 8.
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| CN202211380689.6A CN115648755A (en) | 2022-11-05 | 2022-11-05 | Breathable high-strength composite non-woven fabric and preparation method thereof |
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| CN202211380689.6A CN115648755A (en) | 2022-11-05 | 2022-11-05 | Breathable high-strength composite non-woven fabric and preparation method thereof |
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