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CN106965499A - Porous compound film and preparation method thereof - Google Patents

Porous compound film and preparation method thereof Download PDF

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Publication number
CN106965499A
CN106965499A CN201710085430.1A CN201710085430A CN106965499A CN 106965499 A CN106965499 A CN 106965499A CN 201710085430 A CN201710085430 A CN 201710085430A CN 106965499 A CN106965499 A CN 106965499A
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film
membrane
outer layer
porous
compound film
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CN106965499B (en
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郭启浩
王栋
赵青华
蒋海青
李沐芳
梅涛
吴永智
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Wuhan Textile University
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    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • 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
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/204—Di-electric
    • 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
    • B32B2457/00—Electrical equipment

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The present invention relates to composite membrane field, more particularly to a kind of porous compound film and preparation method thereof, porous compound film, including basement membrane, the outer surface of the basement membrane, which is pasted with outer layer porous membrane, the outer layer porous membrane, is uniformly distributed hole, the average diameter of described hole is 1~10 μm, the preparation method of porous compound film, including step 1) in mass ratio, weigh outer layer copolymer：Acetylbutyrylcellulose is 6.5:3.5~9:1, as outer layer film raw material after being well mixed, outer layer film raw material and basement membrane polymer are put into double-deck cast film machine, the laminated film by basement membrane and outer membrane overlapping is obtained through double-deck cast film machine extrusion, simple tension and after being cooled and shaped process；2) laminated film is soaked in acetone soln, after acetylbutyrylcellulose in acetone extract outer membrane, outer membrane formation outer layer porous membrane obtains porous compound film after drying.The porous compound film has the characteristics of specific surface area is big.

Description

多孔复合薄膜及其制备方法Porous composite film and preparation method thereof

技术领域technical field

本发明涉及复合膜领域，尤其涉及一种多孔复合薄膜及其制备方法。The invention relates to the field of composite membranes, in particular to a porous composite membrane and a preparation method thereof.

背景技术Background technique

复合薄膜由两层或多层不同材料的薄膜通过上胶或热压等方式复合而成的高分子材料，复合薄膜可以由多层不同材料的薄膜组成，因此可以使复合薄膜兼具多种材料的部分性能，赋予复合薄膜更多性能组合。目前，复合薄膜广泛应用于包装领域，由于复合薄膜具有柔韧性强，力学性能优，生产成本低等特点，研究者逐渐将复合薄膜应用在传感器、超级电容器以及功能纤维等领域，但是，传统的复合薄膜表面都是光滑平整的，存在比表面积小的缺点，无法较好地实现传感，导电，吸附等功能。The composite film is a polymer material composed of two or more layers of films of different materials by gluing or hot pressing. The composite film can be composed of multiple layers of films of different materials, so the composite film can be made of multiple materials. Part of the performance, endowing the composite film with more performance combinations. At present, composite films are widely used in the field of packaging. Due to the characteristics of strong flexibility, excellent mechanical properties, and low production costs, researchers have gradually applied composite films to the fields of sensors, supercapacitors, and functional fibers. However, traditional The surface of the composite film is smooth and flat, and has the disadvantage of small specific surface area, which cannot realize the functions of sensing, conductivity, adsorption and so on.

发明内容Contents of the invention

为解决以上问题，本发明的目的是提供一种多孔复合薄膜及其制备方法，该多孔复合薄膜具有比表面积大的特点。In order to solve the above problems, the purpose of the present invention is to provide a porous composite film and its preparation method, the porous composite film has the characteristics of large specific surface area.

为实现上述目的，本发明所设计的技术方案是：In order to achieve the above object, the technical scheme designed by the present invention is:

多孔复合薄膜，包括基膜，所述基膜的外表面贴附有外层多孔薄膜，所述外层多孔薄膜上均匀分布有孔洞，所述孔洞的平均直径为1～10μm；所述基膜为聚丙烯、聚乙烯、聚酯和聚酰胺中的一种，所述外层多孔薄膜为聚丙烯、聚乙烯、聚酯和聚酰胺中的一种；所述基膜的厚度为50～100μm，所述外层多孔薄膜的厚度为50～100μm。The porous composite film includes a base film, the outer surface of the base film is attached with an outer porous film, and holes are evenly distributed on the outer layer porous film, and the average diameter of the holes is 1-10 μm; the base film It is one of polypropylene, polyethylene, polyester and polyamide, and the outer porous film is one of polypropylene, polyethylene, polyester and polyamide; the thickness of the base film is 50-100 μm , the thickness of the outer porous film is 50-100 μm.

作为优选，所述外层多孔薄膜与基膜为同一种材料。Preferably, the outer porous film and the base film are made of the same material.

多孔复合薄膜的制备方法，包括以下步骤：The preparation method of porous composite film, comprises the following steps:

1)按质量比，称取外层聚合物：醋酸丁酸纤维素为6.5:3.5～9:1，混合均匀后作为外层膜原料，将外层膜原料与基膜聚合物投入双层流延膜机，经双层流延膜机挤出、单向拉伸和冷却成型工序后得到由基膜与外层膜叠合的复合薄膜；所述外层聚合物为聚丙烯、聚乙烯、聚酯和聚酰胺中的一种；所述基膜为聚丙烯、聚乙烯、聚酯和聚酰胺中的一种；1) According to the mass ratio, weigh the outer layer polymer: cellulose acetate butyrate at a ratio of 6.5:3.5 to 9:1, mix it evenly and use it as the outer layer film raw material, and put the outer layer film material and the base film polymer into the double-layer flow Film stretching machine, through double-layer casting film machine extrusion, uniaxial stretching and cooling forming process, a composite film laminated by base film and outer layer film is obtained; the outer layer polymer is polypropylene, polyethylene, One of polyester and polyamide; the base film is one of polypropylene, polyethylene, polyester and polyamide;

2)将复合薄膜浸泡于丙酮溶液中，利用丙酮萃取外层膜中醋酸丁酸纤维素后，外层膜形成外层多孔薄膜，干燥后得到多孔复合薄膜。2) soaking the composite film in an acetone solution, using acetone to extract cellulose acetate butyrate in the outer film, the outer film forms an outer porous film, and obtains a porous composite film after drying.

作为优选，所述外层聚合物与基膜聚合物为同一种材料。外层聚合物与基膜聚合物为同一种材料制得的多孔复合薄膜中两层膜的复合效果更好，贴附的更紧。Preferably, the polymer of the outer layer is the same material as the polymer of the base film. The composite effect of the two-layer membrane in the porous composite film made of the same material as the outer layer polymer and the base membrane polymer is better, and the adhesion is tighter.

作为优选，外层多孔薄膜厚度为50～100μm，基膜厚度为50～100μm。Preferably, the thickness of the outer layer porous film is 50-100 μm, and the thickness of the base film is 50-100 μm.

作为优选，所述外层多孔薄膜中孔洞的平均直径为1～10μm。Preferably, the average diameter of the pores in the outer porous film is 1-10 μm.

作为优选，所述外层膜原料与基膜聚合物的质量比为1:1～2。Preferably, the mass ratio of the outer film raw material to the base film polymer is 1:1-2.

本发明的优点在于：The advantages of the present invention are:

1，与传统的复合膜相比，本发明的外层膜为外层多孔薄膜，将外层的比表面积扩大了几十倍，该多孔复合薄膜具有微米级的孔洞结构，若经过功能性物质处理，该微米级的孔洞结构可紧密吸附功能性物质从而实现特殊的功能，如导电，亲水，疏水，即可在特殊纺织面料，传感，超级电容器等领域得到应用。1. Compared with the traditional composite membrane, the outer membrane of the present invention is an outer porous film, which expands the specific surface area of the outer layer by dozens of times. The porous composite membrane has a micron-scale pore structure. Treatment, the micron-scale pore structure can tightly adsorb functional substances to achieve special functions, such as conductivity, hydrophilicity, and hydrophobicity, and can be used in special textile fabrics, sensors, supercapacitors and other fields.

2，通过双层流延膜机复合后，外层多孔薄膜与基膜的复合效果好，无需粘黏剂。2. After compounding by a double-layer cast film machine, the composite effect of the outer porous film and the base film is good, and no adhesive is needed.

3，外层聚合物：醋酸丁酸纤维素为6.5:3.5～9:1时，醋酸丁酸纤维素被均与的分散在外层聚合物中，经过共混挤出单向牵伸，并且不能形成连续相，通过丙酮将醋酸丁酸纤维素萃取后，外层膜形成孔洞结构，从而形成多孔复合薄膜。若质量比大于9:1，外层多孔薄膜中的孔洞直径太大超过10μm，影响多孔复合薄膜的传感或吸附功能；若质量比小于6.5:3.5，经共混挤出单向牵伸，会产生连续相的醋酸丁酸纤维素，经丙酮萃取后形成纳米纤维结构而不能形成孔洞结构。3. Outer layer polymer: when the ratio of cellulose acetate butyrate is 6.5:3.5 to 9:1, cellulose acetate butyrate is uniformly dispersed in the outer layer polymer, and after blending and extruding, it can be stretched in one direction, and cannot A continuous phase is formed, and after the cellulose acetate butyrate is extracted by acetone, the outer membrane forms a pore structure, thereby forming a porous composite film. If the mass ratio is greater than 9:1, the diameter of the pores in the outer porous film is too large to exceed 10 μm, which will affect the sensing or adsorption function of the porous composite film; if the mass ratio is less than 6.5:3.5, the unidirectional stretching will A continuous phase of cellulose acetate butyrate is produced, which forms a nanofibrous structure after extraction with acetone and cannot form a pore structure.

附图说明Description of drawings

图1为本发明多孔复合薄膜的结构示意图；Fig. 1 is the structural representation of porous composite film of the present invention;

图2为图1中外层多孔薄膜的结构示意图；Fig. 2 is the structural representation of outer layer porous film in Fig. 1;

图3为实施例1～4中步骤1)得到的复合薄膜的结构示意图；Fig. 3 is the structural representation of the composite film that step 1) obtains in embodiment 1～4;

图中各部件标号如下：外层多孔薄膜1、基膜2、外层膜3。The labels of the components in the figure are as follows: the outer porous film 1, the base film 2, and the outer film 3.

具体实施方式detailed description

为更好地理解本发明，以下将结合附图和具体实例对发明进行详细的说明。In order to better understand the present invention, the invention will be described in detail below in conjunction with the accompanying drawings and specific examples.

实施例1Example 1

多孔复合薄膜的制备方法，包括以下步骤：The preparation method of porous composite film, comprises the following steps:

1)称取聚丙烯650g与醋酸丁酸纤维素350g，混合均匀后作为外层膜原料，再称取聚丙烯2000g作为基膜聚合物；将外层膜原料与基膜聚合物投入双层流延膜机，经双层流延膜机挤出、单向拉伸和冷却成型工序后得到由基膜2与外层膜3叠合的复合薄膜(如图3所示)；1) Weigh 650g of polypropylene and 350g of cellulose acetate butyrate, mix them uniformly as the raw material of the outer film, then weigh 2000g of polypropylene as the polymer of the base film; put the raw material of the outer film and the polymer of the base film into the double-layer flow Film stretching machine, after the double-layer cast film machine extrusion, unidirectional stretching and cooling forming process, a composite film (as shown in Figure 3) laminated by the base film 2 and the outer film 3 is obtained;

2)将复合薄膜浸泡于丙酮溶液中，利用丙酮萃取外层膜3中醋酸丁酸纤维素后，外层膜3形成外层多孔薄膜1，干燥后得到多孔复合薄膜(如图1所示)。2) Soak the composite film in an acetone solution, use acetone to extract cellulose acetate butyrate in the outer film 3, the outer film 3 forms the outer porous film 1, and obtain a porous composite film after drying (as shown in Figure 1) .

如图1，多孔复合薄膜中外层多孔薄膜1厚度为50μm，基膜2厚度为100μm，结合图2所示，外层多孔薄膜1中孔洞的平均直径为10μm。As shown in Figure 1, the thickness of the outer porous film 1 in the porous composite film is 50 μm, and the thickness of the base film 2 is 100 μm. As shown in Figure 2, the average diameter of the holes in the outer porous film 1 is 10 μm.

实施例2Example 2

1)称取聚乙烯900g与醋酸丁酸纤维素100g，混合均匀后作为外层膜原料，再称取聚乙烯1000g作为基膜聚合物；将外层膜原料与基膜聚合物投入双层流延膜机，经双层流延膜机挤出、单向拉伸和冷却成型工序后得到由基膜2外层膜3叠合的复合薄膜(如图3所示)；1) Weigh 900g of polyethylene and 100g of cellulose acetate butyrate, mix them evenly as the raw material of the outer film, then weigh 1000g of polyethylene as the base film polymer; put the outer film raw material and the base film polymer into the double-layer flow The film stretching machine obtains a composite film (as shown in Figure 3) laminated by the base film 2 and the outer layer film 3 after being extruded by a double-layer cast film machine, uniaxially stretched and cooled and formed;

2)将复合薄膜浸泡于丙酮溶液中，利用丙酮萃取外层膜中醋酸丁酸纤维素后，外层膜3形成外层多孔薄膜1，干燥后得到多孔复合薄膜(如图1所示)。2) Soak the composite film in an acetone solution, use acetone to extract the cellulose acetate butyrate in the outer film, the outer film 3 forms the outer porous film 1, and obtain a porous composite film after drying (as shown in Figure 1).

如图1，多孔复合薄膜中外层多孔薄膜1厚度为100μm，基膜2厚度为50μm，结合图2所示，外层多孔薄膜1中孔洞的平均直径为5μm。As shown in Figure 1, the thickness of the outer porous film 1 in the porous composite film is 100 μm, and the thickness of the base film 2 is 50 μm. As shown in Figure 2, the average diameter of the holes in the outer porous film 1 is 5 μm.

实施例3Example 3

1)称取聚酯700g与醋酸丁酸纤维素为300g，混合均匀后作为外层膜原料，再称取聚酯1500g作为基膜聚合物；将外层膜原料与基膜聚合物投入双层流延膜机，经双层流延膜机挤出、单向拉伸和冷却成型工序后得到由基膜2外层膜3叠合的复合薄膜(如图3所示)；1) Weigh 700g of polyester and 300g of cellulose acetate butyrate, mix them uniformly as the raw material of the outer film, then weigh 1500g of polyester as the polymer of the base film; put the raw material of the outer film and the polymer of the base film into the double layer A cast film machine, after the double-layer cast film machine extrusion, unidirectional stretching and cooling forming process, a composite film (as shown in Figure 3) laminated by base film 2 and outer layer film 3 is obtained;

2)将复合薄膜浸泡于丙酮溶液中，利用丙酮萃取外层膜中醋酸丁酸纤维素后，外层膜形成外层多孔薄膜，干燥后得到多孔复合薄膜(如图1所示)。2) Soak the composite film in an acetone solution, use acetone to extract cellulose acetate butyrate in the outer film, the outer film forms an outer porous film, and obtain a porous composite film after drying (as shown in Figure 1).

如图1，多孔复合薄膜中外层多孔薄膜1厚度为65μm，基膜2厚度为80μm，结合图2所示，外层多孔薄膜1中孔洞的平均直径为1μm。As shown in Figure 1, the thickness of the outer porous film 1 in the porous composite film is 65 μm, and the thickness of the base film 2 is 80 μm. As shown in Figure 2, the average diameter of the holes in the outer porous film 1 is 1 μm.

实施例4Example 4

1)称取聚酰胺800g与醋酸丁酸纤维素200g，混合均匀后作为外层膜原料，再称取聚酰胺1000g作为基膜聚合物；将外层膜原料与基膜聚合物投入双层流延膜机，经双层流延膜机挤出、单向拉伸和冷却成型工序后得到由基膜2外层膜3叠合的复合薄膜(如图3所示)；1) Weigh 800g of polyamide and 200g of cellulose acetate butyrate, mix them uniformly as the raw material of the outer film, then weigh 1000g of polyamide as the polymer of the base film; put the raw material of the outer film and the polymer of the base film into the double-layer flow The film stretching machine obtains a composite film (as shown in Figure 3) laminated by the base film 2 and the outer layer film 3 after being extruded by a double-layer cast film machine, uniaxially stretched and cooled and formed;

2)将复合薄膜浸泡于丙酮溶液中，利用丙酮萃取外层膜中醋酸丁酸纤维素后，外层膜形成外层多孔薄膜，干燥后得到多孔复合薄膜(如图1所示)。2) Soak the composite film in an acetone solution, use acetone to extract cellulose acetate butyrate in the outer film, the outer film forms an outer porous film, and obtain a porous composite film after drying (as shown in Figure 1).

如图1，多孔复合薄膜中外层多孔薄膜1厚度为70μm，基膜2厚度为75μm，结合图2所示，外层多孔薄膜1中孔洞的平均直径为6μm。As shown in Figure 1, the thickness of the outer porous film 1 in the porous composite film is 70 μm, and the thickness of the base film 2 is 75 μm. As shown in Figure 2, the average diameter of the holes in the outer porous film 1 is 6 μm.

以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (7)

1. a kind of porous compound film, including basement membrane, it is characterised in that：It is porous thin that the outer surface of the basement membrane is pasted with outer layer Hole is uniformly distributed on film, the outer layer porous membrane, the average diameter of described hole is 1~10 μm；The basement membrane is poly- One kind in propylene, polyethylene, polyester and polyamide, the outer layer porous membrane is polypropylene, polyethylene, polyester and polyamide In one kind；The thickness of the basement membrane is 50~100 μm, and the thickness of the outer layer porous membrane is 50~100 μm.
2. porous compound film according to claim 1, it is characterised in that：The outer layer porous membrane is same with basement membrane Plant material.
3. a kind of preparation method of porous compound film, it is characterised in that：Comprise the following steps：
1) outer layer copolymer in mass ratio, is weighed：Acetylbutyrylcellulose is 6.5:3.5~9:1, it is used as outer layer after being well mixed Film raw material, double-deck cast film machine is put into by outer layer film raw material and basement membrane polymer, through double-deck cast film machine extrusion, simple tension and It is cooled and shaped the laminated film for obtaining being overlapped after process by basement membrane and outer membrane；The outer layer copolymer be polypropylene, polyethylene, One kind in polyester and polyamide；The basement membrane is one kind in polypropylene, polyethylene, polyester and polyamide；
2) laminated film is soaked in acetone soln, after acetylbutyrylcellulose in acetone extract outer membrane, outer membrane Outer layer porous membrane is formed, porous compound film is obtained after drying.
4. the preparation method of porous compound film according to claim 3, it is characterised in that：The outer layer copolymer and base Membrane polymer is same material.
5. the preparation method of porous compound film according to claim 3, it is characterised in that：Outer layer porous membrane thickness is 50~100 μm, basement membrane thickness is 50~100 μm.
6. the preparation method of porous compound film according to claim 3, it is characterised in that：In the outer layer porous membrane The average diameter of hole is 1~10 μm.
7. the preparation method of porous compound film according to claim 3, it is characterised in that：The outer layer film raw material and base The mass ratio of membrane polymer is 1:1~2.
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CN111455566A (en) * 2020-03-10 2020-07-28 武汉纺织大学 Composite nanofiber membrane and preparation method thereof
CN111752013A (en) * 2020-06-29 2020-10-09 绍兴迪飞新材料有限公司 Porous polymer optical thin film device and preparation method thereof

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN107366195A (en) * 2017-09-20 2017-11-21 武汉菡美洛建筑材料有限公司 A kind of light soft sound insulation high-adhesiveness wallpaper and its manufacture method
CN109111664A (en) * 2018-07-11 2019-01-01 四川羽玺新材料股份有限公司 A kind of PVDF-PET/ graphene quantum dot composite membrane and preparation method thereof
CN111455566A (en) * 2020-03-10 2020-07-28 武汉纺织大学 Composite nanofiber membrane and preparation method thereof
CN111455566B (en) * 2020-03-10 2021-12-24 武汉纺织大学 Composite nanofiber membrane and preparation method thereof
CN111752013A (en) * 2020-06-29 2020-10-09 绍兴迪飞新材料有限公司 Porous polymer optical thin film device and preparation method thereof

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