Multi-layer nuclear shell structural fluorin-containing polymer particle and thermoplastic polyolefin product having the same

A multi-layer core-shell structure, thermoplastic polyolefin technology, used in layered products, synthetic resin layered products, chemical instruments and methods, etc. , the problem of insufficient critical shear rate, etc., to reduce surface defects, improve transparency, and reduce the number of crystal points

Active Publication Date: 2008-02-06
GUANGZHOU SHINE POLYMER TECH
View PDF5 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this fluorocarbon polymer also suffers from insufficient critical shear rate and slow onset time to eliminate melt fracture
[0006] U.S. Patent No. 6,642,310 found that the introduction of polyester into fluorocarbon polymers can significantly increase the critical shear rate, and at the same time significantly accelerate the onset time of eliminating melt fracture, but the addition of polyester will lead to the problem of difficult dispersion, resulting in crystallization on the surface of film products. point of defect

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
  • Multi-layer nuclear shell structural fluorin-containing polymer particle and thermoplastic polyolefin product having the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] The fluoropolymer of the present invention is obtained by in-situ transfer suspension polymerization.

[0041] Fluoropolymer A

[0042]Add 25 grams of deionized water, 2 grams of NaCl, 0.02 grams of nonylphenol polyoxyethylene ether into a 250 ml three-neck flask equipped with a thermometer, reflux device and stirring device, adjust the pH value to 5 with dilute hydrochloric acid, start stirring and add 3 The mixed monomer of methacrylate methyl ester and maleic anhydride (mass ratio 95 / 5, industrial product refining de-inhibition polymerization agent) with 0.65g AIBN dissolved in the gram is controlled at a temperature lower than 50°C, and 120 milliliters of the mixture is added dropwise within 1 hour. Ethylene fluoride-hexafluoropropylene copolymer concentrated dispersion (FKM emulsion L636 emulsion 30% solid content Solvay Solexis S.P.A), after the dropwise addition, add 1.5 grams of active calcium phosphate, slowly feed nitrogen to drive away oxygen, at 4 ° C / min ...

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
melting pointaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The present invention relates to a fluorin-containing polymer granule with multilayer core shell structure and thermoplastic polyolefin products. The gross weight of the fluorin-containing polymer granule include: a) 20 to 80 percent by weight of fluorin-carbon polymer core materials; b) 5-30 percent by weight of intermediate-layer of acrylate copolymer, methacrylate copolymer, or their compounds; c) 15-50 percent by weight of polymer outer layer with melting point at 50-100 DEG C; The average granular diameter of fluorin-containing polymer granules is 0.1-10 mm. Fluorin-contain polymer granules of the present invention, being added with thermoplastic polyolefin melt, can be not only dispersed evenly but significantly improve critical shear rate and obviously speed up the time for the removal of melt rupture; thereby reducing surface defects of extruded products and improving transparency of thin film.

Description

technical field [0001] The present invention relates to fluoropolymer particles of multilayer core-shell structure and thermoplastic polyolefin articles containing the same. Background technique [0002] It is well known that the propulsion of the rotating screw can make the viscous polymer melt pass through the extruder barrel and enter the die, so that the polymer can be formed into the desired shape, and then cooled and solidified into a product with the general shape of the die. High molecular weight polymers such as polyolefins are extruded into shaped structures such as pipes, conduits, cable sheaths or films. [0003] In order to reduce production costs, it is desirable to extrude polymers at high rates. Higher extrusion rates can be easily obtained by increasing the extruder screw speed. However, at very high extrusion rates, the surface of the extrudate is rough, forming an undesired pattern. These surface defects are also known as melt fractures. [0004] There...

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): C08J3/12B32B27/28C08L27/12C08L33/06
Inventor 刘辉石建伟楼文奎
Owner GUANGZHOU SHINE POLYMER TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap