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

Polypropylene porous membrane and preparation method thereof

A polypropylene and porous film technology, applied in the field of polypropylene porous film and its preparation, can solve the problems of poor performance of polypropylene porous film, difficult processing and molding, etc., and achieve the effect of promoting solubility

Inactive Publication Date: 2015-05-20
ZHEJIANG XINHENGTAI ADVANCED MATERIAL
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a polypropylene porous membrane and its preparation method, which can solve the defects of poor performance and difficult processing and molding of existing polypropylene porous membrane products.

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
  • Polypropylene porous membrane and preparation method thereof
  • Polypropylene porous membrane and preparation method thereof
  • Polypropylene porous membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 Shown, a kind of polypropylene porous membrane comprises following components: the polypropylene resin of 100 weight parts, the compatibilizer of 5 weight parts, the porogen of 5 weight parts, wherein: the molecular weight distribution value of described polypropylene resin for 14.

[0032] The polypropylene resin is isotactic polypropylene, the compatibilizer is acrylic acid grafted polypropylene, and the porogen is an acrylate-containing silicone polyether copolymer.

[0033] The preparation method that a kind of polypropylene porous film as above adopts comprises the following steps:

[0034] a) After mixing isotactic polypropylene, acrylic acid grafted polypropylene, and acrylate-containing silicone polyether copolymer in proportion, kneading by a screw extruder, and extruding to obtain a polypropylene porous membrane Composite film substrate;

[0035] b) put the composite film substrate obtained in step a) into a sealed high-pressure foaming con...

Embodiment 2

[0037] Such as figure 2 Shown, a kind of polypropylene porous membrane comprises following components: the polypropylene resin of 100 weight parts, the compatibilizer of 11 weight parts, the porogen of 15 weight parts, wherein: the molecular weight distribution value of described polypropylene resin for 25.

[0038] The polypropylene resin is random copolymerized polypropylene, the compatibilizer is glycidyl methacrylate grafted polypropylene, and the porogen is fluorine-containing silicone polyether copolymer.

[0039] The preparation method that a kind of polypropylene porous film as above adopts comprises the following steps:

[0040] a) After mixing random copolymerized polypropylene, glycidyl methacrylate grafted polypropylene, and fluorine-containing silicone polyether copolymer in proportion, kneading by a screw extruder, and extruding to obtain Composite film substrate of polypropylene porous membrane;

[0041] b) the composite film base material obtained in step a...

Embodiment 3

[0043] Such as image 3 Shown, a kind of polypropylene porous membrane comprises following components: the polypropylene resin of 100 weight parts, the compatibilizer of 13 weight parts, the porogen of 21 weight parts, wherein: the molecular weight distribution value of described polypropylene resin for 17.

[0044] The polypropylene resin is isotactic polypropylene, the compatibilizer is maleic anhydride grafted polypropylene, and the porogen is polyether copolymer containing acrylate silicone.

[0045] The preparation method that a kind of polypropylene porous film as above adopts comprises the following steps:

[0046] a) After mixing isotactic polypropylene, maleic anhydride grafted polypropylene, and acrylate-containing silicone polyether copolymer in proportion, kneading by a screw extruder and extruding to obtain Composite film substrates for porous membranes;

[0047] b) the composite film substrate obtained in step a) is put into a sealed high-pressure foaming cont...

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

No PUM Login to View More

Abstract

The invention relates to a polypropylene porous membrane. The polypropylene porous membrane comprises the following components in parts by weight: 100 parts of polypropylene resin, 1-15 parts of a compatibility agent and 5-30 parts of a pore-forming agent. Polypropylene resin is foamed and expanded by virtue of applying a supercritical fluid foaming technology so that bubble walls are broken and communicated during growth by virtue of the pore-forming agent with low interfacial tension. The polypropylene porous membrane has the advantages that the polypropylene resin is foamed and expanded by virtue of applying a supercritical fluid foaming technology so that bubble walls are broken and communicated during growth by virtue of the pore-forming agent with low interfacial tension, the high-throughput polypropylene porous membrane is easily prepared; by applying the supercritical fluid porous molding technology, the process is clean and free of pollution, the pore-forming agent containing silicon-oxygen groups is also a CO2-philic substance so that the solubility of carbon dioxide in polypropylene is greatly promoted and polypropylene is fully expanded during the foaming process which is conductive to forming the high-throughput polypropylene porous membrane.

Description

technical field [0001] The invention relates to a polypropylene porous membrane and a preparation method thereof. Background technique [0002] Due to its excellent chemical resistance, high temperature resistance, and high mechanical strength, polypropylene porous membranes are widely used in fields such as filtration, separation, and lithium-ion battery separators. [0003] Chinese patent CN1525907A discloses that polypropylene raw material and β-crystal nucleating agent are melted and extruded to form β crystals by cooling and crystallizing polypropylene, and then continuous biaxially stretched polypropylene is obtained by continuous biaxially stretching under suitable temperature conditions. Porous membrane, the obtained polypropylene porous membrane has good tear resistance and high porosity, but this process has the problems of large equipment investment, narrow processing and forming window, difficult control of pore size, and wide range of pore size distribution . ...

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
IPC IPC(8): C08L23/12C08L23/14C08L51/06C08J9/30
CPCC08L23/12C08J5/18C08J9/30C08J2323/12C08J2451/06C08J2483/12C08L23/14C08L2203/16C08L2205/03C08L2205/035C08L2207/10C08L51/06C08L83/12
Inventor 姜修磊
Owner ZHEJIANG XINHENGTAI ADVANCED MATERIAL
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com