CN106985482B - Composite film on surface of nanofiber and preparation method thereof - Google Patents
Composite film on surface of nanofiber and preparation method thereof Download PDFInfo
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- CN106985482B CN106985482B CN201710085428.4A CN201710085428A CN106985482B CN 106985482 B CN106985482 B CN 106985482B CN 201710085428 A CN201710085428 A CN 201710085428A CN 106985482 B CN106985482 B CN 106985482B
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- 239000002121 nanofiber Substances 0.000 title claims abstract description 67
- 239000002131 composite material Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229920000642 polymer Polymers 0.000 claims abstract description 30
- 229920006217 cellulose acetate butyrate Polymers 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 238000005266 casting Methods 0.000 claims abstract description 15
- 238000005303 weighing Methods 0.000 claims abstract description 11
- 238000001125 extrusion Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000002791 soaking Methods 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims description 36
- -1 polypropylene Polymers 0.000 claims description 18
- 239000004952 Polyamide Substances 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 9
- 229920002647 polyamide Polymers 0.000 claims description 9
- 229920000573 polyethylene Polymers 0.000 claims description 9
- 229920001155 polypropylene Polymers 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 229920006149 polyester-amide block copolymer Polymers 0.000 claims description 6
- 210000004379 membrane Anatomy 0.000 description 34
- 238000002156 mixing Methods 0.000 description 5
- 238000010030 laminating Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 210000002469 basement membrane Anatomy 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/202—Conductive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/728—Hydrophilic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/73—Hydrophobic
Abstract
The invention relates to the field of composite films, in particular to a composite film on the surface of nanofibers and a preparation method thereof. The preparation method of the composite film comprises the following steps: 1) weighing outer layer polymers according to mass ratio: cellulose acetate butyrate is 1: 9-4: 6, the cellulose acetate butyrate is uniformly mixed to serve as an outer-layer film raw material, the outer-layer film raw material and a base film polymer are fed into a double-layer casting film machine, and a composite film formed by overlapping the base film and the outer-layer film is obtained after extrusion, unidirectional stretching and cooling forming of the double-layer casting film machine; 2) and soaking the composite film in an acetone solution, extracting cellulose acetate butyrate in the outer layer film by using acetone to form a nanofiber film on the outer layer film, and drying to obtain the composite film with the nanofiber surface. The composite film has the characteristic of large specific surface area.
Description
Technical Field
The invention relates to the field of composite films, in particular to a composite film on the surface of a nanofiber and a preparation method thereof.
Background
The composite film is made of a high polymer material compounded by two or more layers of films made of different materials in a gluing or hot pressing mode, and the composite film can be made of multiple layers of films made of different materials, so that the composite film has partial performances of multiple materials and is endowed with more performance combinations. At present, composite films are widely applied to the field of packaging, and researchers gradually apply the composite films to the fields of sensors, supercapacitors, functional fibers and the like because the composite films have the characteristics of strong flexibility, excellent mechanical properties, low production cost and the like.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a nanofiber surface composite film having a large specific surface area, and a method for preparing the same.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the composite film on the surface of the nanofiber comprises a base film, wherein a nanofiber film is attached to the outer surface of the base film, and the average diameter of the nanofiber in the nanofiber film is 50-800 nm; the base film is one of polypropylene, polyethylene, polyester and polyamide, and the nanofiber film is one of polypropylene, polyethylene, polyester and polyamide; the thickness of the base film is 50-100 mu m, and the thickness of the nanofiber film is 50-100 mu m.
Preferably, the nanofiber membrane and the base membrane are the same material.
The preparation method of the composite film on the surface of the nanofiber comprises the following steps:
1) weighing outer layer polymers according to mass ratio: cellulose acetate butyrate is 1: 9-4: 6, the cellulose acetate butyrate is uniformly mixed to serve as an outer-layer film raw material, the outer-layer film raw material and a base film polymer are fed into a double-layer casting film machine, and a composite film formed by overlapping the base film and the outer-layer film is obtained after extrusion, unidirectional stretching and cooling forming of the double-layer casting film machine; the outer layer polymer is one of polypropylene, polyethylene, polyester and polyamide, and the base film polymer is one of polypropylene, polyethylene, polyester and polyamide;
2) and soaking the composite film in an acetone solution, extracting cellulose acetate butyrate in the outer layer film by using acetone to form a nanofiber film on the outer layer film, and drying to obtain the composite film with the nanofiber surface.
Preferably, the base film polymer and the outer layer polymer are the same material. The composite film with the nanofiber surface prepared by the base film polymer and the outer layer polymer made of the same material has better composite effect of two films and tighter attachment.
Preferably, the thickness of the nanofiber membrane is 50-100 μm, and the thickness of the base membrane is 50-100 μm.
Preferably, the average diameter of the nano-fibers in the nano-fiber membrane is 50-800 nm.
Preferably, the mass ratio of the outer layer film raw material to the base film polymer is 1: 1-2.
The invention has the advantages that:
compared with the traditional composite membrane, the outer membrane of the composite membrane is a nanofiber membrane, the specific surface area of the outer membrane is enlarged by dozens of times, the average diameter of nanofibers in the nanofiber membrane is 50-800 nm, the nanoscale fibers have excellent surface activity, and if the nanofiber membrane is treated by functional substances, the micron-sized nanofiber membrane can tightly adsorb the functional substances so as to realize special functions such as conductivity, hydrophilicity and hydrophobicity, and can be applied to the fields of special textile fabrics, sensing, super capacitors and the like.
2, after the double-layer casting film machine is compounded, the compounding effect of the nanofiber film and the base film is good, and no adhesive is needed.
3, outer layer polymer: when the mass ratio of the cellulose acetate butyrate is 1: 9-4: 6, the cellulose acetate butyrate is used as a sea phase, the outer-layer polymer is used as an island phase, the outer-layer membrane is subjected to blending, extrusion and drafting, the heat value phase separation and the thermal outer-layer polymer are dispersed into a nanofiber structure, the outer-layer membrane is changed into a nanofiber membrane after the cellulose acetate butyrate is extracted by acetone, and the nanofiber membrane is fixed on the surface of a base membrane to form a composite membrane on the surface of the nanofiber. When the mass ratio is less than 1:9, the outer layer of the nanofiber membrane is too rare, and when the mass ratio is more than 4:6, the cellulose acetate butyrate is uniformly dispersed in the outer layer of the polymer and cannot form a continuous phase, and when acetone is extracted, a nanofiber structure cannot be formed, but a pore structure is formed.
Drawings
FIG. 1 is a schematic structural diagram of a composite film on the surface of a nanofiber according to the present invention;
FIG. 2 is a schematic structural diagram of the nanofiber membrane of FIG. 1;
FIG. 3 is a schematic structural view of the composite film obtained in step 1) in examples 1 to 4;
the components in the figures are numbered as follows: nanofiber membrane 1, basement membrane 2, outer membrane 3.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
Example 1
The preparation method of the composite film on the surface of the nanofiber comprises the following steps:
1) weighing 100g of polypropylene and 900g of cellulose acetate butyrate, uniformly mixing the polypropylene and the cellulose acetate butyrate to be used as an outer layer film raw material, and weighing 2000g of polypropylene to be used as a base film polymer; putting the outer layer film raw material and the base film polymer into a double-layer casting film machine, and obtaining a composite film (shown in figure 3) formed by laminating a base film 2 and an outer layer film 3 after the processes of extrusion, unidirectional stretching and cooling forming of the double-layer casting film machine;
2) soaking the composite film in acetone solution, extracting cellulose acetate butyrate in the outer layer film 3 by using acetone to form a nanofiber film 1 on the outer layer film 3, and drying to obtain the composite film with the nanofiber surface (shown in figure 1).
As shown in fig. 1, the nanofiber membrane 1 of the composite film on the surface of the nanofiber has a thickness of 50 μm, the base membrane 2 has a thickness of 100 μm, and as shown in fig. 2, the average diameter of the nanofiber in the nanofiber membrane 1 is 800 nm.
Example 2
1) Weighing 400g of polyethylene and 600g of cellulose acetate butyrate, uniformly mixing the polyethylene and the cellulose acetate butyrate to be used as an outer layer film raw material, and weighing 1000g of polyethylene to be used as a base film polymer; putting the outer layer film raw material and the base film polymer into a double-layer casting film machine, and obtaining a composite film (shown in figure 3) formed by laminating the outer layer film 3 of the base film 2 after the extrusion, unidirectional stretching and cooling forming processes of the double-layer casting film machine;
2) soaking the composite film in acetone solution, extracting cellulose acetate butyrate in the outer layer film by using acetone to form a nanofiber film 1 on the outer layer film 3, and drying to obtain the composite film with the nanofiber surface (shown in figure 1).
As shown in fig. 1, the nanofiber membrane 1 of the composite film on the surface of the nanofiber has a thickness of 100 μm, the base membrane 2 has a thickness of 50 μm, and as shown in fig. 2, the average diameter of the nanofiber in the nanofiber membrane 1 is 50 nm.
Example 3
1) Weighing 200g of polyester and 800g of cellulose acetate butyrate, uniformly mixing the polyester and the cellulose acetate butyrate to obtain an outer layer film raw material, and weighing 1500g of polyester to obtain a base film polymer; putting the outer layer film raw material and the base film polymer into a double-layer casting film machine, and obtaining a composite film (shown in figure 3) formed by laminating the outer layer film 3 of the base film 2 after the extrusion, unidirectional stretching and cooling forming processes of the double-layer casting film machine;
2) soaking the composite film in acetone solution, extracting cellulose acetate butyrate in the outer layer film by using acetone to form a nanofiber film 1 on the outer layer film 3, and drying to obtain the composite film with the nanofiber surface (shown in figure 1).
As shown in fig. 1, the nanofiber membrane 1 of the composite film on the surface of the nanofiber has a thickness of 72 μm, the base membrane 2 has a thickness of 86 μm, and as shown in fig. 2, the average diameter of the nanofiber in the nanofiber membrane 1 is 500 nm.
Example 4
1) Weighing 300g of polyamide and 700g of cellulose acetate butyrate, uniformly mixing the polyamide and the cellulose acetate butyrate to be used as an outer layer film raw material, and weighing 1000g of polyamide to be used as a base film polymer; putting the outer layer film raw material and the base film polymer into a double-layer casting film machine, and obtaining a composite film (shown in figure 3) formed by laminating the outer layer film 3 of the base film 2 after the extrusion, unidirectional stretching and cooling forming processes of the double-layer casting film machine;
2) soaking the composite film in acetone solution, extracting cellulose acetate butyrate in the outer layer film by using acetone to form a nanofiber film 1 on the outer layer film 3, and drying to obtain the composite film with the nanofiber surface (shown in figure 1).
As shown in fig. 1, the nanofiber membrane 1 of the composite film on the surface of the nanofiber has a thickness of 75 μm, the base membrane 2 has a thickness of 78 μm, and as shown in fig. 2, the average diameter of the nanofiber in the nanofiber membrane 1 is 100 nm.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (1)
1. A preparation method of a composite film on the surface of a nanofiber is characterized by comprising the following steps: the method comprises the following steps:
1) weighing outer layer polymers according to mass ratio: cellulose acetate butyrate is 1: 9-4: 6, the cellulose acetate butyrate is uniformly mixed to serve as an outer-layer film raw material, the outer-layer film raw material and a base film polymer are fed into a double-layer casting film machine, and a composite film formed by overlapping the base film and the outer-layer film is obtained after extrusion, unidirectional stretching and cooling forming of the double-layer casting film machine; the base film and the outer layer film are formed synchronously; the outer layer polymer is one of polypropylene, polyethylene, polyester and polyamide, and the base film polymer is one of polypropylene, polyethylene, polyester and polyamide;
2) soaking the composite film in an acetone solution, extracting cellulose acetate butyrate in the outer layer film by using acetone to form a nanofiber film on the outer layer film, and drying to obtain the composite film on the surface of the nanofiber; the base film polymer and the outer layer polymer are the same material;
the thickness of the nanofiber film is 50-100 mu m, and the thickness of the base film is 50-100 mu m;
the average diameter of the nanofibers in the nanofiber membrane is 50-800 nm;
the mass ratio of the outer layer film raw material to the base film polymer is 1: 1-2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710085428.4A CN106985482B (en) | 2017-02-17 | 2017-02-17 | Composite film on surface of nanofiber and preparation method thereof |
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| CN201710085428.4A CN106985482B (en) | 2017-02-17 | 2017-02-17 | Composite film on surface of nanofiber and preparation method thereof |
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| CN106985482A CN106985482A (en) | 2017-07-28 |
| CN106985482B true CN106985482B (en) | 2020-02-14 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103396571A (en) * | 2013-08-19 | 2013-11-20 | 南京林业大学 | Cellulose nano-fiber/polymethyl methacrylate composite film preparation method |
| CN104689724A (en) * | 2015-03-18 | 2015-06-10 | 武汉纺织大学 | Organic and inorganic composite nanofiber membrane filtering material and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105032210B (en) * | 2015-06-19 | 2019-01-25 | 深圳市星源材质科技股份有限公司 | A kind of polyolefin air-filtering membrane and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103396571A (en) * | 2013-08-19 | 2013-11-20 | 南京林业大学 | Cellulose nano-fiber/polymethyl methacrylate composite film preparation method |
| CN104689724A (en) * | 2015-03-18 | 2015-06-10 | 武汉纺织大学 | Organic and inorganic composite nanofiber membrane filtering material and preparation method thereof |
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Application publication date: 20170728 Assignee: Dongguan keleipeng Atomization Technology Co.,Ltd. Assignor: Wuhan Textile University Contract record no.: X2024980001264 Denomination of invention: Composite thin films on the surface of nanofibers and their preparation methods Granted publication date: 20200214 License type: Common License Record date: 20240123 |
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