Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hydrophilia polypropylene hollow fiber membrane and preparation method thereof

A polypropylene and fiber membrane technology, applied in the field of membrane materials, can solve problems such as unfavorable industrial implementation, complex synthesis reactions, etc., and achieve the effects of less pollution, simple process, and large water flux

Inactive Publication Date: 2019-12-10
山东华象环保科技有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the hydrophilicity is improved, there are disadvantages such as complex synthesis reactions and unfavorable industrial implementation.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydrophilia polypropylene hollow fiber membrane and preparation method thereof
  • Hydrophilia polypropylene hollow fiber membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of hydrophilic polypropylene hollow fiber membrane, preparation method comprises the following steps:

[0031] S1. Casting solution configuration:

[0032] Dissolve 1.5 parts of methacrylic acid in 10 parts of DBP, dissolve 0.005 parts of AIBN in 5 parts of DOP, and then dissolve these 10 parts of DBP, 20 parts of polypropylene F401 (melt index 2.3g / 10min), 50 parts of DOP and 0.5 parts of β-type polypropylene nucleating agent were added to the reactor, stirred at 180°C and 120rpm for 2 hours, then 5 parts of DOP containing the initiator were added to the kettle, and continued at 180°C and 150rpm Stirring for 3 hours resulted in a homogeneous solution. Then, vacuum defoaming was performed for 6 hours under the condition of 20 rpm to form a casting solution.

[0033] S2. Thermally induced phase separation spinning

[0034] Add the casting liquid to the twin-screw extruder, the extrusion temperature is 180°C, after extrusion, it is spun into hollow fibers throug...

Embodiment 2

[0038] A kind of hydrophilic polypropylene hollow fiber membrane, preparation method comprises the following steps:

[0039] S1. Casting solution configuration:

[0040] Dissolve 1 part of acrylamide in 6 parts of GTA, add 20 parts of polypropylene F401 (melt index 2.3g / 10min) and 0.4 parts of polypropylene nucleating agent into the reactor, and stir for 3 hours at 170°C and 120rpm , and then 10 parts of Dinch containing the initiator was added into the kettle, and the stirring was continued for 2 hours under the conditions of 170° C. and 160 rpm to form a homogeneous solution. Then, vacuum defoaming was performed for 5 hours under the condition of 15 rpm to form a casting solution.

[0041] S2. Thermally induced phase separation spinning

[0042]Add the casting solution to the twin-screw extruder, the extrusion temperature is 170°C, after extrusion, it is spun into hollow fibers through the spinneret, the core liquid is Dinch, the temperature is 130°C, and then it is formed...

Embodiment 3

[0046] S1. Casting solution configuration:

[0047] Dissolve 2.5 parts of 2-acrylamido-2 methylpropanesulfonic acid in 20 parts of DBP, dissolve 0.001 parts of BP in 8 parts of DOP, and then dissolve these 20 parts of DBP, 30 parts of polypropylene FY-4012 ( Melt index 2.5g / 10min), 55 parts of DOP and 0.5 parts of polypropylene nucleating agent were added to the reactor, stirred at 180°C and 100rpm for 2 hours, and then 10 parts of DOP containing the initiator were added to the kettle, Stirring was continued for 4 hours under the conditions of 180° C. and 150 rpm to form a homogeneous solution. Then, vacuum defoaming was performed for 4 hours under the condition of 10 rpm to form a casting solution.

[0048] S2. Thermally induced phase separation spinning

[0049] Add the casting liquid to the twin-screw extruder, the extrusion temperature is 180°C, after extrusion, it is spun into hollow fibers through the spinneret, the core liquid is DOP, the temperature is 60°C, and then...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melt flow indexaaaaaaaaaa
melt flow indexaaaaaaaaaa
melt flow indexaaaaaaaaaa
Login to View More

Abstract

The invention provides a hydrophilia polypropylene hollow fiber membrane and a preparation method thereof, and relates to the technical field of membrane materials. The preparation method comprises the steps of casting membrane liquid preparation, thermally induced phase separation spinning and post treatment, a hydrophilic polymer, an initiator, a polymer, a diluents and a non-diluents are addedinto the casting membrane liquid, the hydrophilic polymer is grafted onto a polypropylene molecular chain in the preparation process of the casting membrane liquid by a method of in-situ polymerization grafting, uniform casting membrane liquid is formed, and then the hydrophilia polypropylene hollow fiber membrane is prepared by the methods of an extruder and a spinning machine, hot drawing, coagulation bath phase separation, heat treatment, solvent extraction and the like. According to the preparation method, the hydrophilic polymer is grafted onto polypropylene very conveniently and fast through a method of in-situ reaction, the hydrophilicityof the prepared hydrophilia polypropylene hollow fiber membrane can be significantly improved, excellent stability is achieved, water flux is large, and pollution is not prone being produced.

Description

technical field [0001] The invention relates to the technical field of membrane materials, in particular to a hydrophilic polypropylene hollow fiber membrane and a preparation method thereof. Background technique [0002] Membrane separation technology is an emerging multidisciplinary high-tech in recent decades. Polymer separation membrane is a membrane made of polymer or polymer composite material with the function of separating fluid mixture. Under the action of one or several driving forces such as temperature difference or temperature difference, a certain component of the raw material is selectively permeated through the membrane, while other components are retained on the raw material side, so as to achieve the purpose of separation, purification and concentration. The membrane is the key to the membrane separation process. Hollow fiber membranes are widely used in the fields of water treatment, food processing and separation of pharmaceutical products due to their ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/26B01D69/08B01D69/02B01D67/00
CPCB01D67/0011B01D69/02B01D69/08B01D71/26B01D2325/36
Inventor 李法亮
Owner 山东华象环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com