Method for fixed-point functionalization of polyolefin material and continuous production method of fixed-point functionalized polyolefin material

A polyolefin and functionalization technology, applied in the field of fixed-point functionalized polyolefin materials, can solve the problems of limiting the use effect of functionalized PP, the uncontrollable maleic anhydride group, and the inability to actually meet the application requirements. Effects of large-scale industrial production, ease of large-scale industrial production, and simplified production process

Active Publication Date: 2018-04-24
WANHUA CHEM GRP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the entire functional grafting process, PP macromolecular free radicals are prone to β scission, resulting in random distribution of free radicals on the molecular chain, which in turn causes grafted maleic anhydri

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
  • Method for fixed-point functionalization of polyolefin material and continuous production method of fixed-point functionalized polyolefin material
  • Method for fixed-point functionalization of polyolefin material and continuous production method of fixed-point functionalized polyolefin material
  • Method for fixed-point functionalization of polyolefin material and continuous production method of fixed-point functionalized polyolefin material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0091] Example 1

[0092] 1) After the polypropylene (brand T30S) and di-tert-butyl peroxide are stirred evenly (the mass ratio of polypropylene and di-tert-butyl peroxide is 100:0.1), the twin-screw extruder (length-diameter ratio is 48) is added, The degraded polypropylene wire (or simply called "wire") is obtained by melt extrusion by segmented heating. The temperature of the feeding section of the twin-screw extruder is 185 °C, the temperature of the melting and homogenization section is 220 °C, and the temperature of the die head is 210 °C. The screw speed was 80 rpm.

[0093] 2) The degraded polypropylene wire is pulled into the reaction tank by the pulling action of the sliding roller in the pelletizer, and the wire is immersed in the reaction solution. 200μW / cm 2 , the residence time of the wire in the reaction solution is 300s, and the functionalization of the degraded polypropylene end groups is completed. The reaction solution consists of 10 parts of azobisisobut...

Example Embodiment

[0101] Example 2

[0102] 1) Stir polypropylene (brand PP-H-GD320), 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane (polypropylene and 2,5-dimethyl -2,5-bis(tert-butylperoxy) mass ratio of 100:0.1), then added to a twin-screw extruder (length-diameter ratio of 48), and melt-extruded by segmented heating to obtain degraded polypropylene wire (or simply referred to as "wire"), the temperature of the feeding section of the twin-screw extruder is 130 °C, the temperature of the melting and homogenizing section is 230 °C, the temperature of the die head is 190 °C, and the screw speed is 300 rpm.

[0103] 2) The degraded polypropylene wire is pulled into the reaction solution tank by the pulling action of the sliding roller in the pelletizer, and the wire is immersed in the reaction solution. Intensity of 100μW / cm 2 , the residence time of the wire in the reaction solution is 200s, and the end group functionalization of the degraded polypropylene is completed. The reaction liquid con...

Example Embodiment

[0111] Example 3

[0112] 1) Mix propylene and α-olefin copolymer (brand Vistamaxx6102) and dicumyl peroxide evenly (the mass ratio of polyolefin to dicumyl peroxide is 100:10) and then add it to a twin-screw extruder (long diameter). The ratio is 48), and the degraded polypropylene wire (or simply referred to as "wire") is obtained by melting and extruding by segmented heating. The temperature was 190°C, and the screw speed was 50 rpm.

[0113] 2) The degraded polypropylene wire is pulled into the reaction tank by the pulling action of the sliding roller in the pelletizer, and the wire is immersed in the reaction solution. 50μW / cm 2 , the residence time of the wire in the reaction solution is 200s, and the end group functionalization of the degraded polypropylene is completed. The reaction solution consisted of 15 parts of azobisisobutyronitrile, 10 parts of 2,4-dihydroxybenzophenone, 150 parts of mercaptoethanol and 300 parts of toluene.

[0114] 3) The end-group-functio...

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 discloses a method for fixed-point functionalization of a polyolefin material and a continuous production method of the fixed-point functionalized polyolefin material. The method for fixed-point functionalization of the polyolefin material comprises the steps as follows: 1) polyolefin and a peroxide initiator are uniformly mixed for melt degradation, and degraded polyolefin with carbon-carbon double bonds at the tail end of a molecular chain is obtained; 2) the degraded polyolefin is immersed in a reaction solution, the reaction solution comprises a functionalization initiator, functional monomers and a surfactant, the carbon-carbon double bonds at the tail end of the molecular chain of the degraded polyolefin react with functional monomers in the reaction solution under ultraviolet irradiation, and the polyolefin material with a functionalized end group is obtained. With the adoption of the method, a functional group can be grafted at the chain end of the molecular chainof polyolefin in a fixed point manner, the grafting efficiency is higher, and the use effect of the functionalized polyolefin can be improved.

Description

technical field [0001] The invention relates to the technical field of functionalized polyolefin materials, in particular to a method for fixed-point functionalized polyolefin materials. Background technique [0002] Polyolefin, especially polypropylene (PP), as a general-purpose plastic, has outstanding stress crack resistance, wear resistance, good insulation and low dielectric rate, easy molding and processing, and can be widely used in injection molding Forming, film, fiber, hollow molding, extrusion molding and other products. However, due to the non-polarity and crystallinity of PP, it has disadvantages such as poor cold resistance, low temperature brittleness, poor dyeability and adhesion, poor creep resistance, and poor compatibility with other materials; thus Its application in the automotive industry, packaging materials, medical equipment, home appliances and other fields is limited. [0003] In order to improve the non-polar characteristics of PP and expand its...

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): C08F255/02C08F222/06C08F220/32C08F220/06C08F2/48C08F8/34C08F110/06B29C47/92B29B9/06B29C47/60B29C48/92
CPCB29B9/06B29C48/625B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92904B29C2948/92942C08F2/48C08F8/34C08F255/02C08F110/06C08F220/325
Inventor 王绍杰宋林霍江贝陈冠良张红李静颜晓捷孙庆磊吕兵陈海波
Owner WANHUA CHEM GRP
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