CN107998906A - 一种pvdf-pet编织管复合膜的制备方法 - Google Patents

一种pvdf-pet编织管复合膜的制备方法 Download PDF

Info

Publication number
CN107998906A
CN107998906A CN201711349032.2A CN201711349032A CN107998906A CN 107998906 A CN107998906 A CN 107998906A CN 201711349032 A CN201711349032 A CN 201711349032A CN 107998906 A CN107998906 A CN 107998906A
Authority
CN
China
Prior art keywords
preparation
composite membrane
film
pvdf
casting solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201711349032.2A
Other languages
English (en)
Inventor
张勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan East Sun Metal Products Co Ltd
Original Assignee
Foshan East Sun Metal Products Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Foshan East Sun Metal Products Co Ltd filed Critical Foshan East Sun Metal Products Co Ltd
Priority to CN201711349032.2A priority Critical patent/CN107998906A/zh
Publication of CN107998906A publication Critical patent/CN107998906A/zh
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/34—Polyvinylidene fluoride

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Artificial Filaments (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

本发明提出了一种PVDF‑PET编织管复合膜的制备方法，包括以下步骤：(1)处理编织管；(2)制备铸膜液；(3)制备均质铸膜液；(4)制备初成复合膜膜丝，然后进人凝胶浴槽中分相成膜；(5)制成品。本发明制得的PVDF‑PET编织管复合膜的涂覆层薄且强度极高，减少了在实际使用中膜丝破裂、折断的现象。

Description

一种PVDF-PET编织管复合膜的制备方法
技术领域
本发明属于编织管复合膜技术领域，具体涉及一种PVDF-PET编织管复合膜的制备方法。
背景技术
聚偏氟乙烯(PVDF)是一种性能优良的高分子材料，具有耐冲性、耐磨性、化学稳定性、耐辐射和易成膜等优点，因而被广泛应用于制膜工业。然而在实际使用中发现，以纯聚合物制备的中空纤维膜，存在机械强度低，在气、水或气水混合液的剧烈扰动及水力冲击作用下易发生膜丝断裂现象。并且当PVDF 膜用于水相体系时，由于其表面能较低，膜表面和水无氢键作用，具有强疏水性，因此导致在水相中使用时需要较大的驱动力。此外在用于水体净化、分离与浓缩天然产物的有效成分时，膜易受到污染，膜表面形成凝胶层，导致膜通量快速下降。
发明内容
针对现有技术的不足，本发明提出一种PVDF-PET编织管复合膜的制备方法。
本发明的技术方案是这样实现的：一种PVDF-PET编织管复合膜的制备方法，包括以下步骤：
(1)将80℃的NaOH溶液浸泡20～50分钟预处理，去除编织管表面油渍后，烘干待用；
(2)将聚偏氟乙烯、DMAC、牛血清白蛋白、LiCl和TiO2混合，制得铸膜液，其中聚偏氟乙烯、DMAC、牛血清白蛋白、LiCl和TiO2％的质量分数分别为79％、12％、6％、2％和1％。
(3)将Ti02和DMAC混合超声0.5～1小时，使纳米Ti02粒子在溶剂中分散均匀，然后依次将LiCI、聚乙烯吡咯烷酮、聚偏氟乙烯加入到搅拌罐中，搅拌脱泡，得到均质铸膜液；
(4)利用复合膜纺丝设备，将脱泡后的均质铸膜液均匀涂覆到经预处理后的编织管表面，得到初成复合膜膜丝，然后进人凝胶浴槽中分相成膜；
(5)成膜后的膜丝由绕丝轮搜集在自来水中浸泡40～56小时，最终得到成品。
进一步的，步骤(1)中浸泡时间为30分钟。
进一步的，步骤(3)混合超声时间为40分钟。
进一步的，步骤(5)中浸泡时间为48小时。
与现有技术相比，本发明具有以下优点：本发明以纤维编织管为内支撑层，利用自主开发的涂覆一浸没凝胶相转化技术将铸膜液涂覆到编织管上，制备得到PVDF-PET编织管复合膜。本发明制得的PVDF-PET编织管复合膜的涂覆层薄且强度极高，减少了在实际使用中膜丝破裂、折断的现象。
具体实施方式
下面将结合实施例对本发明的技术方案进行清楚、完整地描述，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作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
一种PVDF-PET编织管复合膜的制备方法，包括以下步骤：
(1)将80℃的NaOH溶液浸泡20～50分钟预处理，去除编织管表面油渍后，烘干待用；
(2)将聚偏氟乙烯、DMAC、牛血清白蛋白、LiCl和TiO2混合，制得铸膜液，其中聚偏氟乙烯、DMAC、牛血清白蛋白、LiCl和TiO2％的质量分数分别为79％、12％、6％、2％和1％。
(3)将Ti02和DMAC混合超声0.5～1小时，使纳米Ti02粒子在溶剂中分散均匀，然后依次将LiCI、聚乙烯吡咯烷酮、聚偏氟乙烯加入到搅拌罐中，搅拌脱泡，得到均质铸膜液；
(4)利用复合膜纺丝设备，将脱泡后的均质铸膜液均匀涂覆到经预处理后的编织管表面，得到初成复合膜膜丝，然后进人凝胶浴槽中分相成膜；
(5)成膜后的膜丝由绕丝轮搜集在自来水中浸泡40～56小时，最终得到成品。
上述实施例中，步骤(1)中浸泡时间为30分钟。
上述实施例中，步骤(3)混合超声时间为40分钟。
上述实施例中，步骤(5)中浸泡时间为48小时。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (4)

1.一种PVDF-PET编织管复合膜的制备方法，其特征在于，包括以下步骤：
(1)将80℃的NaOH溶液浸泡20～50分钟预处理，去除编织管表面油渍后，烘干待用；
(2)将聚偏氟乙烯、DMAC、牛血清白蛋白、LiCl和TiO2混合，制得铸膜液，其中聚偏氟乙烯、DMAC、牛血清白蛋白、LiCl和TiO2％的质量分数分别为79％、12％、6％、2％和1％；
(3)将Ti02和DMAC混合超声0.5～1小时，使纳米Ti02粒子在溶剂中分散均匀，然后依次将LiCI、聚乙烯吡咯烷酮、聚偏氟乙烯加入到搅拌罐中，搅拌脱泡，得到均质铸膜液；
(4)利用复合膜纺丝设备，将脱泡后的均质铸膜液均匀涂覆到经预处理后的编织管表面，得到初成复合膜膜丝，然后进人凝胶浴槽中分相成膜；
(5)成膜后的膜丝由绕丝轮搜集在自来水中浸泡40～56小时，最终得到成品。
2.如权利要求1所述制备方法，其特征在于，步骤(1)中浸泡时间为30分钟。
3.如权利要求1所述制备方法，其特征在于，步骤(3)混合超声时间为40分钟。
4.如权利要求1所述制备方法，其特征在于，步骤(5)中浸泡时间为48小时。
CN201711349032.2A 2017-12-15 2017-12-15 一种pvdf-pet编织管复合膜的制备方法 Withdrawn CN107998906A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711349032.2A CN107998906A (zh) 2017-12-15 2017-12-15 一种pvdf-pet编织管复合膜的制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711349032.2A CN107998906A (zh) 2017-12-15 2017-12-15 一种pvdf-pet编织管复合膜的制备方法

Publications (1)

Publication Number Publication Date
CN107998906A true CN107998906A (zh) 2018-05-08

Family

ID=62059164

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711349032.2A Withdrawn CN107998906A (zh) 2017-12-15 2017-12-15 一种pvdf-pet编织管复合膜的制备方法

Country Status (1)

Country Link
CN (1) CN107998906A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110064310A (zh) * 2019-05-15 2019-07-30 海宁一泓环境科技有限公司 一种纤维管增强型中空纤维复合生物膜的生产工艺

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110064310A (zh) * 2019-05-15 2019-07-30 海宁一泓环境科技有限公司 一种纤维管增强型中空纤维复合生物膜的生产工艺

Similar Documents

Publication Publication Date Title
Ma et al. Nanocomposite membranes embedded with functionalized MoS2 nanosheets for enhanced interfacial compatibility and nanofiltration performance
Deng et al. Self-roughened omniphobic coatings on nanofibrous membrane for membrane distillation
Zahid et al. A comprehensive review on polymeric nano-composite membranes for water treatment
Hegab et al. Improving the fouling resistance of brackish water membranes via surface modification with graphene oxide functionalized chitosan
Ghanbari et al. Super hydrophilic TiO2/HNT nanocomposites as a new approach for fabrication of high performance thin film nanocomposite membranes for FO application
Moazzam et al. Investigating the BSA protein adsorption and bacterial adhesion of Al‐alloy surfaces after creating a hierarchical (micro/nano) superhydrophobic structure
Shokrgozar Eslah et al. Forward osmosis water desalination: Fabrication of graphene oxide-polyamide/polysulfone thin-film nanocomposite membrane with high water flux and low reverse salt diffusion
Zhang et al. Highly permeable thin-film nanocomposite membranes embedded with PDA/PEG nanocapsules as water transport channels
Wang et al. A robust superhydrophobic PVDF composite coating with wear/corrosion-resistance properties
Zhan et al. Superior nanofiltration membranes with gradient cross-linked selective layer fabricated via controlled hydrolysis
Valamohammadi et al. Preparation of positively charged thin-film nanocomposite membranes based on the reaction between hydrolyzed polyacrylonitrile containing carbon nanomaterials and HPEI for water treatment application
Khan et al. Metal oxide and carbon nanomaterial based membranes for reverse osmosis and membrane distillation: A comparative review
Liu et al. Modified superhydrophilic and underwater superoleophobic PVDF membrane with ultralow oil-adhesion for highly efficient oil/water emulsion separation
CN102600734B (zh) 增强型氧化石墨烯中空纤维复合膜及其制备方法
Gumbi et al. Relating the performance of sulfonated thin-film composite nanofiltration membranes to structural properties of macrovoid-free polyethersulfone/sulfonated polysulfone/O-MWCNT supports
CN101890315B (zh) 碳纳米管-聚合物复合纳滤膜及其制备方法
Lu et al. Layered double hydroxide nanoparticle modified forward osmosis membranes via polydopamine immobilization with significantly enhanced chlorine and fouling resistance
CN109304107B (zh) 一种大通量正渗透中空纤维膜及其制备方法
WO2012102678A1 (en) A forward osmosis membrane
CN105148750B (zh) 一种聚酰胺复合膜表面改性的方法
CN102512998B (zh) 一种分子筛改性聚砜超滤膜的制备方法
CN110801738B (zh) 一种高分散二氧化钛掺杂聚酰胺纳滤膜的制备方法
Huang et al. High-performance zwitterionic nanofiltration membranes fabricated via microwave-assisted grafting of betaine
Bhaskar et al. Next-generation thin-film composite nanofiltration membranes for water remediation: a review
Xie et al. One-step preparation of omniphobic membrane with concurrent anti-scaling and anti-wetting properties for membrane distillation

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20180508

WW01 Invention patent application withdrawn after publication