WO2021233184A1 - 一种流体分离膜及其制造方法和其应用 - Google Patents

一种流体分离膜及其制造方法和其应用 Download PDF

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WO2021233184A1
WO2021233184A1 PCT/CN2021/093412 CN2021093412W WO2021233184A1 WO 2021233184 A1 WO2021233184 A1 WO 2021233184A1 CN 2021093412 W CN2021093412 W CN 2021093412W WO 2021233184 A1 WO2021233184 A1 WO 2021233184A1
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layer
support layer
membrane
composite
separation
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PCT/CN2021/093412
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French (fr)
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周建伟
潘治宏
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上海格瑞菲英科技有限公司
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10—Supported membranes; Membrane supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
    • B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/06—Flat membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis

Definitions

  • the invention relates to the technical field of fluid filtration and separation materials, in particular to a fluid separation membrane, a manufacturing method thereof, and an application thereof.
  • Membrane purification is widely used because of its large filtration area, high filtration accuracy and long-term use without the need to replace filter materials.
  • the R&D and production directions of conventional purification membranes have strong field applicability, and the production methods are very different.
  • the general production capacity is not high and the cost is high.
  • the separation function membrane layer produced by coating, stretching, spinning, etc. has poor pollution resistance, and is often unusable in a highly polluted environment or its service life is greatly reduced. Therefore, the technical field of fluid filtration and separation materials urgently needs a fluid separation membrane product with low cost, wide adaptability, pollution resistance, and strong versatility.
  • the purpose of the present invention is to provide a fluid separation membrane, a manufacturing method thereof, and an application thereof.
  • a fluid separation membrane includes a separation functional membrane layer, and the separation functional membrane layer includes a single functional membrane layer and/or a composite functional membrane layer.
  • the lower surface of the separation functional membrane layer is provided with a first support layer, and the first support layer includes a single support layer or a multi-layer composite support layer.
  • the upper surface of the separation functional film layer is provided with a second support layer to form a symmetrical double-sided support layer structure; the second support layer includes a single support layer and/or a multi-layer composite support layer.
  • the separation functional membrane layer is a membrane layer made of battery diaphragm materials; the battery diaphragm material includes natural polymer materials, synthetic polymer materials and inorganic materials.
  • the battery separator material includes polypropylene (PP), polyethylene (PE) or polyimide (PI).
  • the form of the battery separator material is classified into organic film, woven material, paper, or non-woven fabric.
  • the composite functional film layer is a film layer formed by any combination of battery separator material, coated functional layer and porous material.
  • the single support layer is a membrane layer made of a porous material
  • the multilayer composite support layer is a support layer formed by a combination of multiple single support layers;
  • the porous material includes woven cloth, non-woven cloth, or mesh cloth.
  • a method for manufacturing a fluid separation membrane includes: compounding a separation functional membrane layer and a first support layer; wherein the separation functional membrane layer includes a single functional membrane layer and/or a composite functional membrane layer; the first support The layers include a single support layer and/or multiple composite support layers.
  • the upper surface of the separation functional membrane layer is composited with the second support layer; the first support layer includes a single support layer and/or a multi-layer composite support layer.
  • the first supporting layer and the second supporting layer adopt hot-melt composite, hot-melt adhesive composite, hot-melt adhesive film composite, or glue spray and separate functional film composite.
  • a fluid separation membrane is used in roll membranes, flat membranes, DTRO membranes, conventional filter elements, and filter frame products.
  • the present invention provides a fluid separation membrane and its manufacturing method and its application. By improving the performance of battery diaphragm products applied to battery production, it is applied to the separation and purification of fluids. Through the porous structure of the battery diaphragm, it can Impurities, moisture, colloids, bacteria, etc. in fluids are separated and purified. Battery separator products have the significant advantages of high industrial maturity, large production capacity, low cost, and high separation reliability.
  • Battery diaphragm products used as separation functional membrane materials in the field of fluid filtration and separation products can reduce the production cost of various purification products by more than 50% and more than double the service life; in addition, the method of the present invention can be applied to batteries produced by batteries According to different product characteristics, diaphragm products can be used alone or used as a reinforced product after supporting non-woven fabrics and nets. Through the production of roll membranes, flat membranes, DTRO membranes and other structural products, it is widely used in the separation and purification of air, water, emulsion, petroleum, lubricating oil, solvent oil and other fluids.
  • Figure 1 is the first schematic diagram of the structure of the fluid separation membrane of the present invention
  • Figure 2 is a second structural diagram of the fluid separation membrane of the present invention.
  • Figure 3 is a schematic diagram three of the structure of the fluid separation membrane of the present invention.
  • Figure 4 is a fourth schematic diagram of the structure of the fluid separation membrane of the present invention.
  • Fig. 5 is a schematic view five of the structure of the fluid separation membrane of the present invention.
  • the utility model provides a fluid separation membrane, which includes a separation functional membrane layer 1.
  • the separation functional membrane layer 1 has three structural forms: the first type is shown in Figure 1 and includes a single functional membrane layer 11; As shown in Figure 2, it includes a composite functional film layer 12; the third type is shown in Figure 3, including a single functional film layer 11 and a composite functional film layer 12; the composite functional film layer 12 is coated on the single functional film layer 11 .
  • the first type is shown in FIG. 4, a first support layer 2 is provided on the lower surface of the separation functional membrane layer 1, and the first support layer includes a single support layer or a multi-layer composite support layer.
  • a second support layer 3 is provided on the upper surface of the separation functional membrane layer 1 to form a symmetrical double-sided support layer structure; the second The supporting layer 3 includes a single supporting layer or a multi-layer composite supporting layer.
  • the separation functional membrane layer 1 may be composed of battery separator products used in battery production.
  • the battery separator materials include natural polymer materials, synthetic polymer materials and inorganic materials, and the battery separator materials are divided into organic thin films. (Such as polymer microporous membrane), woven materials, paper, or non-woven fabrics.
  • the membrane material includes polypropylene (PP), polyethylene (PE), or polyimide (PI).
  • the production process includes but is not limited to dry stretching, wet solvent pore formation, electrostatic spinning, etc.
  • the composite functional film layer 12 is a film layer formed by any combination of battery separator materials, coating functional layers, and porous materials.
  • the single support layer is a membrane layer made of porous materials
  • the multilayer composite support layer is a support layer formed by a combination of multiple single support layers; the porous material includes, but is not limited to, woven fabric, non-woven fabric, or Mesh etc.
  • the composite formation of a single multi-layer support layer is compounded by means of hot-melt compounding, hot-melt adhesive compounding, hot-melt adhesive film compounding, and glue spraying.
  • the fluid separation membrane is that the separation accuracy of the fluid separation membrane is between 1 ⁇ m and 0.001 ⁇ m; the fluid separation membrane in the present invention can be applied and is not limited to roll membranes, flat membranes, DTRO membranes, conventional filter elements, filter frame products, etc. structure type;
  • a method for manufacturing a fluid separation membrane includes: compounding a separation functional membrane layer 1 and a first support layer 2; wherein the separation functional membrane layer 1 includes a single functional membrane layer 11 and/or a composite functional membrane layer 12;
  • the first supporting layer 2 includes a single supporting layer and/or a multi-layer composite supporting layer.
  • the first supporting layer 2 and the second supporting layer 3 adopt hot-melt composite, hot-melt adhesive composite, hot-melt adhesive film composite, or glue spray and separation functional film composite 1.
  • battery separator products with high membrane surface strength can be directly used in the production of mainstream membrane purification products such as roll membranes, flat membranes, and DTRO membranes, as well as conventional filter elements, filter frames and other structural products without adding a support layer.
  • All battery diaphragm materials can be composited with the supporting non-woven fabric (mesh) layer using hot melt glue spraying and hot melt glue mesh composite mode to obtain stronger membrane surface strength.
  • the composite membrane material can be applied to the purification and separation products of roll membrane, flat membrane, DTRO membrane, conventional filter element, filter frame and other structural forms;
  • Polyimide (PI) and other high-temperature resistant battery separator products can use supporting non-woven fabric (mesh) layer materials, hot-melt composite, hot-melt adhesive spray and hot-melt adhesive omentum composite mode and supporting non-woven fabric (mesh) Layers are compounded.
  • the composite membrane material can be applied to the production of mainstream membrane purification products such as roll membranes, flat membranes, DTRO membranes, and conventional filter elements, filter frames and other structural forms.
  • the fluid separation membrane in the separation and purification of fluids. Since the fluid separation membrane is chemically and physically modified by the fluid separation membrane, its application range in the field of fluid separation and purification can be expanded. For example, surface modifiers are used to improve the hydrophilic properties of the separation functional membrane surface, so as to be suitable for the field of water purification. Or coating other functional materials on the surface of the separation membrane to improve the strength and durability of the separation membrane surface.
  • Fluid separation membranes are used in the production of mainstream membrane purification products such as roll membranes, flat membranes, and DTRO membranes, as well as conventional filter elements, filter frames and other structural products.
  • the method of the present invention adopts a battery diaphragm product currently widely used in battery production, which has the significant advantages of high industrial maturity, large production capacity, low cost, and high separation reliability.
  • the functional membrane product applied to the technical field of fluid filtration and separation materials can reduce the production cost of various purification products by more than 50%, and the service life can be more than doubled.
  • the products manufactured by the method of the present invention are compared with the currently widely used PTFE stretched separation membrane products, and the above-mentioned data is obtained by actual measurement.
  • the PTFE stretch membrane can be flushed and regenerated within 500 times, while the composite membrane produced by a wet PE diaphragm can be flushed and regenerated more than 3000 times.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
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  • Separation Using Semi-Permeable Membranes (AREA)
  • Cell Separators (AREA)

Abstract

一种流体分离膜及其制造方法和其应用，流体分离膜包括分离功能膜层（1），分离功能膜层（1）包括单一功能膜层（11）和/或复合功能膜层（12）；分离功能膜层（1）下表面设置有第一支撑层（2），第一支撑层（12）包括单一支撑层或多层复合支撑层；分离功能膜层（1）的上表面设置有第二支撑层（3），形成对称的双面支撑层结构；第二支撑层（3）包括单一支撑层和/或多层复合支撑层；分离功能膜层为电池隔膜类材料制成的膜层；电池隔膜材料包括天然高分子材料、合成高分子材料及无机材料；电池隔膜材料包括聚丙烯(PP)、聚乙烯(PE)或聚酰亚胺(PI)。

Description

一种流体分离膜及其制造方法和其应用 技术领域
本发明涉及流体过滤分离材料技术领域，尤其涉及一种流体分离膜及其制造方法和其应用。
背景技术
近年来，随着工业技术的高速发展，其生产过程中也随之对所应用的空气、水、乳化液、石油、润滑油、溶剂油等流体类的洁净度提出了更高的要求。另外，其生产过程中产生的流体类废弃物也需净化处理，以达到排放物环保的目的。
膜法净化因其过滤面积大，过滤精度高且能长期使用而无需更换过滤材料，因而得到广泛应用。但因常规净化膜其研发生产方向都具有较强的领域适用性，且生产方式差异化很大。因此导致普遍产能不高，造价高昂。而且通过涂敷、拉伸、纺丝等方式生产的分离功能膜层耐污染性能较差，也往往在高污染环境中无法使用或者使用寿命大幅降低。因此，流体过滤分离材料技术领域迫切需要一种造价低廉，适应性广泛，耐污染、通用性强的流体分离膜产品。
发明内容
针对上述缺陷或不足，本发明的目的在于提供一种流体分离膜及其制造方法和其应用。
为达到以上目的，本发明的技术方案为：
一种流体分离膜，包括分离功能膜层，所述分离功能膜层包括单一功能膜层和/或复合功能膜层。
所述分离功能膜层下表面设置有第一支撑层，所述第一支撑层包括单一支撑层或多层复合支撑层。
所述分离功能膜层的上表面设置有第二支撑层，形成对称的双面支撑层结构；所述第二支撑层包括单一支撑层和/或多层复合支撑层。
所述分离功能膜层为电池隔膜类材料制成的膜层；所述电池隔膜材料包括天然高分子材料、合成高分子材料及无机材料。
所述电池隔膜材料包括聚丙烯(PP)、聚乙烯(PE)或聚酰亚胺(PI)。
所述电池隔膜材料的形态分为有机薄膜、编织材料、纸类、或非织造布。
所述复合功能膜层为电池隔膜材料、涂敷功能层及多孔材料的任意组合形式形成的膜层。
所述单一支撑层为多孔材料制成的膜层，所述多层复合支撑层为多层单一支撑层复合形成的支撑层；所述多孔材料包括纺织布、无纺布、或网布。
一种流体分离膜的制造方法，包括：将分离功能膜层与第一支撑层进行复合；其中，所述分离功能膜层包括单一功能膜层和/或复合功能膜层；所述第一支撑层包括单一支撑层和/或多层复合支撑层。
所述分离功能膜层上表面与第二支撑层进行复合；所述第一支撑层包括单一支撑层和/或多层复合支撑层。
所述第一支撑层、第二支撑层采用热熔复合、热熔胶复合、热熔胶膜复合或喷胶与分离功能膜层复合。
一种流体分离膜在流体类分离净化中的应用。
一种流体分离膜在卷式膜、平板膜、以及DTRO膜、常规滤芯、滤框类制品中的应用。
与现有技术比较，本发明的有益效果为：
本发明提供了一种流体分离膜及其制造方法和其应用，通过将应用于电池生产的电池隔膜类产品，进行性能改进，应用于流体类分离净化，通过其电池隔膜的多孔结构，能够对流体类中的杂质、水分、胶质、细菌等进行分离净化，电池隔膜产品具有产业成熟度高、产能大、成本低、分离可靠性高的显著优势。电池隔膜类产品作为分离功能性膜材料应用于流体过滤分离产品领域可降低各种净化产品的生产成本50％以上，使用寿命提高一倍以上；另外，本发明方法可将应用于电池生产的电池隔膜类产品根据不同的产品特性，单独使用或者于支撑无纺布、网复合后作为增强型产品使用。通过制成卷式膜、平板膜、DTRO膜等结构形式的产品，以广泛适用于空气、水、乳化液、石油、润滑油、溶剂油等流体类的分离净化。
附图说明
图1是本发明流体分离膜结构示意图一；
图2是本发明流体分离膜的结构示意图二；
图3是本发明流体分离膜的结构示意图三；。
图4是本发明流体分离膜的结构示意图四；
图5是本发明流体分离膜的结构示意图五。
具体实施方式
下面将结合附图对本发明做详细描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明的保护范围。
实施例一
本实用新型提供了一种流体分离膜，包括分离功能膜层1，所述分离功能膜层1有三种结构形式：第一种如图1所示，包括单一功能膜层11；第二种如图2所示，包括复合功能膜层12；第三种如图3所示，包括单一功能膜层11和复合功能膜层12；所述复合功能膜层12涂覆于单一功能膜层11上。
优选地，第一种如图4所示，所述分离功能膜层1下表面设置有第一支撑层2，所述第一支撑层包括单一支撑层或多层复合支撑层。
进一步优选地，如图5所示，为了增加流体分离膜的支撑性，所述分离功能膜层1的上表面设置有第二支撑层3，形成对称的双面支撑层结构；所述第二支撑层3包括单一支撑层或多层复合支撑层。
所述分离功能膜层1可以是应用于电池生产的电池隔膜产品构成，所述电池隔膜类材料包括天然高分子材料、合成高分子材料及无机材料，所述电池隔膜材料的形态分为有机薄膜(如高分子微孔膜)、编织材料、纸类、或非织造布。示例性的，本发明中，所述隔膜类材料包括聚丙烯(PP)、聚乙烯(PE)、或聚酰亚胺(PI)。生产工艺包含且不局限于干法拉伸、湿法溶剂成孔、静电纺丝等。
所述复合功能膜层12为电池隔膜类材料、涂敷功能层及多孔材料的任意组合形式形成的膜层。所述单一支撑层为多孔材料制成的膜层，所述多层复 合支撑层为多层单一支撑层复合形成的支撑层；所述多孔材料包括但不局限于纺织布、无纺布、或网布等。多层单一支撑层复合形成通过热熔复合、热熔胶复合、热熔胶膜复合、喷胶等方式复合。
所述流体分离膜在于该流体分离膜的分离精度在1μm-0.001μm之间；本发明中流体分离膜可适用且不限于卷式膜、平板膜、DTRO膜、常规滤芯、滤框类制品等结构形式；
实施例二
一种流体分离膜的制造方法，包括：将分离功能膜层1与第一支撑层2进行复合；其中，所述分离功能膜层1包括单一功能膜层11和/或复合功能膜层12；所述第一支撑层2包括单一支撑层和/或多层复合支撑层。
所述第一支撑层2、第二支撑层3采用热熔复合、热熔胶复合、热熔胶膜复合或喷胶与分离功能膜层复合1。
其中，膜面强度高的电池隔膜类产品可以不增加支撑层，直接用于卷式膜、平板膜、DTRO膜等主流的膜净化产品以及常规滤芯、滤框等结构形式的产品的生产。
所有电池隔膜材料(电池隔膜类产品)均可采用热熔胶喷胶及热熔胶网膜复合模式与支撑无纺布(网)层进行复合，以获得更强的膜面强度。复合后的膜材料可以适用于卷式膜、平板膜、DTRO膜、常规滤芯、滤框等结构形式的净化分离产品；
聚酰亚胺(PI)等耐高温的电池隔膜产品可以采用支撑无纺布(网)层材料热熔复合以及热熔胶喷胶及热熔胶网膜复合模式与支撑无纺布(网)层进行复合。复合后的膜材料可以适用于卷式膜、平板膜、DTRO膜等主流的膜 净化产品以及常规滤芯、滤框等结构形式的产品的生产。
实施例三
一种所述的流体分离膜在流体类分离净化中的应用。由于流体分离膜在于通过对该流体分离膜的化学及物理改性，可以拓展其在流体分离净化领域的适用范围。例如，通过表面改性剂来改善分离功能膜面的亲水性能，以适用于水净化领域。或者在分离方能膜表面涂敷其他功能性材料，以提高分离功能膜面的强度及耐用性。
流体分离膜在卷式膜、平板膜、以及DTRO膜等主流的膜净化产品以及常规滤芯、滤框等结构形式的产品的生产。
通过制成卷式膜、平板膜、DTRO膜等结构形式的产品，以广泛适用于空气、水、乳化液、石油、润滑油、溶剂油等流体类分离净化。
本发明方法采用了一种目前广泛应用于电池生产的电池隔膜产品，其具有产业成熟度高、产能大、成本低、分离可靠性高的显著优势。该功能性膜产品应用于流体过滤分离材料技术领域可降低各种净化产品的生产成本50％以上，使用寿命提高一倍以上。例如，以本发明方法制造的产品，与目前被广泛使用的PTFE拉伸类分离膜产品相比较，实测得出上述数据。例如，PTFE拉伸膜在46 #液压油净化中，可冲洗再生次数在500次以内，而采用湿法PE隔膜生产的复合膜，其可冲洗再生次数可以达到3000次以上。
对于本领域技术人员而言，显然能了解到上述具体事实例只是本发明的优选方案，因此本领域的技术人员对本发明中的某些部分所可能作出的改进、变动，体现的仍是本发明的原理，实现的仍是本发明的目的，均属于本发明所保护的范围。

Claims (13)

  1. 一种流体分离膜，其特征在于，包括分离功能膜层，所述分离功能膜层包括单一功能膜层和/或复合功能膜层。
  2. 根据权利要求1所述的流体分离膜，其特征在于，所述分离功能膜层下表面设置有第一支撑层，所述第一支撑层包括单一支撑层或多层复合支撑层。
  3. 根据权利要求2所述的流体分离膜，其特征在于，所述分离功能膜层的上表面设置有第二支撑层，形成对称的双面支撑层结构；所述第二支撑层包括单一支撑层和/或多层复合支撑层。
  4. 根据权利要求1-3任意一项所述的流体分离膜，其特征在于，所述分离功能膜层为电池隔膜类材料制成的膜层；所述电池隔膜材料包括天然高分子材料、合成高分子材料及无机材料。
  5. 根据权利要求4所述的流体分离膜，其特征在于，所述电池隔膜材料包括聚丙烯(PP)、聚乙烯(PE)或聚酰亚胺(PI)。
  6. 根据权利要求4所述的流体分离膜，其特征在于，所述电池隔膜材料的形态分为有机薄膜、编织材料、纸类、或非织造布。
  7. 根据权利要求1所述的流体分离膜，其特征在于，所述复合功能膜层为电池隔膜材料、涂敷功能层及多孔材料的任意组合形式形成的膜层。
  8. 根据权利要求2或3所述的流体分离膜，其特征在于，所述单一支撑层为多孔材料制成的膜层，所述多层复合支撑层为多层单一支撑层复合形成的支撑层；所述多孔材料包括纺织布、无纺布、或网布。
  9. 一种基于权利要求2所述的流体分离膜的制造方法，其特征在于，包括：将分离功能膜层与第一支撑层进行复合；其中，所述分离功能膜层包括 单一功能膜层和/或复合功能膜层；所述第一支撑层包括单一支撑层和/或多层复合支撑层。
  10. 根据权利要求9所述的流体分离膜，其特征在于，所述分离功能膜层上表面与第二支撑层进行复合；所述第一支撑层包括单一支撑层和/或多层复合支撑层。
  11. 根据权利要求10所述的流体分离膜，其特征在于，所述第一支撑层、第二支撑层采用热熔复合、热熔胶复合、热熔胶膜复合或喷胶与分离功能膜层复合。
  12. 一种基于权利要求1-6任意一项所述的流体分离膜在流体类分离净化中的应用。
  13. 一种基于权利要求1-6任意一项所述的流体分离膜在卷式膜、平板膜、以及DTRO膜、常规滤芯、滤框类制品中的应用。
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