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

High-density polyethylene modified material and preparation method thereof

A technology of high-density polyethylene and modified materials, which is applied in the field of polyethylene modified materials and its preparation, high-density polyethylene modified materials and its preparation, and can solve the problem of poor aging resistance and environmental stress resistance of high-density polyethylene Poor, poor impact resistance and other problems, to achieve the effect of improving impact resistance and environmental stress resistance, excellent aging resistance and impact resistance, and improving processing performance

Inactive Publication Date: 2014-09-24
BLUESTAR CHENGDU NEW MATERIALS
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention aims to solve the defects of high-density polyethylene as food packaging, and proposes a high-density polyethylene modified material and its preparation method, which mainly solves the poor aging resistance, poor impact resistance and poor environmental stress resistance of high-density polyethylene and the problem of easy discoloration

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A high-density polyethylene modified material, consisting of the following raw materials in parts by weight: 50 parts of HDPE, 1 part of polyethylene octene co-elastomer, 0.01 parts of polyurethane resin, 10 parts of calcium carbonate, 10 parts of metallocene modified polyethylene, 2 parts of dispersant, 0.1 part of ultraviolet absorber, 0.5 part of magnesium hydroxide.

[0018] The preparation method is as follows: transfer the mixed material to a twin-screw extruder, and set the temperature of each zone of the extruder to: 160°C in the first zone, 160°C in the first zone, 170°C in the second zone, 170°C in the third zone, and 180°C in the fourth zone , the fifth zone is 190°C, the head temperature is set to 200°C, and the speed of the twin-screw extruder is 300-500r / min; after extrusion, wire drawing is cooled, air-dried and granulated.

[0019] This embodiment is the most basic implementation mode, and the dispersant can be selected from one or more of polyethylene w...

Embodiment 2

[0021] A high-density polyethylene modified material, consisting of the following raw materials in parts by weight: 70 parts of HDPE, 4 parts of polyethylene octene co-elastomer, 0.5 parts of polyurethane resin, 20 parts of heavy calcium carbonate, metallocene modified polyethylene 20 parts, 6 parts of polyethylene wax, 5 parts of ultraviolet absorber, 3 parts of magnesium hydroxide.

[0022] Its preparation method is with embodiment 1.

[0023] This embodiment is a preferred embodiment, what calcium carbonate selects for use is heavy calcium carbonate, and its particle size is little, and dispersibility is good, and is not easy to break in the film blowing process; What dispersant selects for use is polyethylene wax, and its purchase is convenient, and price It is cheap and has good dispersibility, and is widely used as a dispersing aid for plastics. The modified material in this embodiment can be used for middle and high-end food packaging.

Embodiment 3

[0025] 58 parts of HDPE, 2.8 parts of polyethylene octene co-elastomer, 0.2 parts of polyurethane resin, 20 parts of heavy calcium carbonate, 13 parts of metallocene modified polyethylene, 2.5 parts of polyethylene wax, ultraviolet light absorber UV-531 2 Parts, 1.5 parts of magnesium hydroxide.

[0026] The preparation method is as follows: transfer the mixed material to a twin-screw extruder, and set the temperature of each zone of the extruder to: 160°C in the first zone, 160°C in the first zone, 170°C in the second zone, 170°C in the third zone, and 180°C in the fourth zone , the fifth zone is 190°C, the head temperature is set to 200°C, and the speed of the twin-screw extruder is 450r / min; after extrusion, wire drawing is cooled, air-dried and granulated.

[0027] This example is the best implementation mode. The prepared modified material has excellent aging resistance, temperature resistance and impact resistance, can effectively improve the defects of ordinary HDPE mat...

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 polyethylene modified material and a preparation method thereof, and in particular relates to a high-density polyethylene modified material and a preparation method thereof, and belongs to the plastic modification field. The invention discloses the high-density polyethylene modified material and the preparation method thereof, wherein the high-density polyethylene modified material is composed of the following raw materials in parts by weight: 50-70 parts of HDPE, 1-4 parts of polyethylene-octene elastomer, 0.01-0.5 part of polyurethane resin, 10-25 parts of calcium carbonate, 10-20 parts of metallocene modified polyethylene, 2-8 parts of dispersant, 0.1-5 parts of ultraviolet absorber and 0.5-3 parts of magnesium hydroxide. The preparation method comprises five steps of metering, mixing, extruding, drawing and cooling, and drying and pelletizing. The preparation method has excellent anti-aging capacity and anti-impact capacity, and is high in tenacity, not prone to change color and high in vapor infiltration preventing capacity, and is mainly applied to blowing middle and top grade food packages.

Description

technical field [0001] The invention relates to a polyethylene modified material and a preparation method thereof, in particular to a high-density polyethylene modified material and a preparation method thereof, belonging to the field of plastic modification. Background technique [0002] Polyethylene can be divided into high-density polyethylene, low-density polyethylene and linear low-density polyethylene according to different polymerization methods, molecular weight and chain structure. Low density polyethylene (LOW DENSITY POLYETHYLENE, LDPE) is commonly known as high-pressure polyethylene. Because of its low density and the softest material, it is mainly used in plastic bags and agricultural films. High-density polyethylene (HIGH DENSITY POLYETHYLENE, HDPE) is commonly known as low-pressure polyethylene. Compared with LDPE and LLDPE, it has higher temperature resistance, oil resistance, and steam permeability resistance. In addition, electrical insulation, impact resis...

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): C08L23/06C08L23/08C08L75/04C08K3/26C08K3/22B29C47/92B29C48/92
CPCB29B9/12B29B7/46B29B9/06B29C2947/92161B29C47/92B29B7/72B29C48/92B29C2948/9258B29C2948/92704C08K2201/003C08L23/06C08L2201/08C08L2205/025C08L2205/035C08L2207/062C08L23/0815C08L75/04C08K2003/2224C08K2003/265B29C48/40B29C2948/92161B29C2948/9259B29C2948/92895B29C2948/92904
Inventor 赵奕李智高川
Owner BLUESTAR CHENGDU NEW MATERIALS
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