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Blended polyethylene resin suitable for hollow blow molding barrels of more than 200 liters and its preparation method and application

A technology of polyethylene resin and high-density polyethylene, applied in the field of polymer materials, can solve the problems of no obvious decrease in mechanical properties, high surface roughness of finished products, high energy consumption in processing, etc., and achieve good surface smoothness, excellent mechanical properties, Effect of reduction in processing energy consumption

Active Publication Date: 2021-05-07
SHANGHAI FANSHUN PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of high processing energy consumption, high surface roughness and burrs in the processed finished products when single raw material low-melt finger polyethylene resin is used for blow molding production in the prior art, the purpose of the present invention is to provide a It is suitable for blending polyethylene resin for hollow blow molding barrels above 200L. Compared with single raw materials, the finished product has better surface smoothness, lower processing energy consumption, and no obvious decrease in mechanical properties.

Method used

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  • Blended polyethylene resin suitable for hollow blow molding barrels of more than 200 liters and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0030] 100 parts of polyethylene resin A (melt flow rate 2.1g / 10min) and 50 parts of polyethylene resin B (melt flow rate 8.5g / 10min) were mechanically stirred, melt extruded and blended with a twin-screw extruder to obtain It is suitable for blending polyethylene resin for hollow blow molding barrels above 200L (melt flow rate is 4.3g / 10min), the screw diameter of the twin-screw extruder is 150mm, the aspect ratio is 25, the power of the screw motor is 132KW, and the processing temperature is 180°C, the temperature of each section of the extruder is: feed zone: 50°C, zone 1 180°C, zone 2 190°C, zone 3 200°C, zone 4 200°C, zone 5 200°C, zone 6 180°C, zone 7 190°C, 200°C in zone 8, 200°C in zone 9, blow molding to obtain a 200L hollow blow molding barrel.

Embodiment 2

[0032] 100 parts of polyethylene resin A (melt flow rate 2.1g / 10min) and 70 parts of polyethylene resin B (melt flow rate 8.5g / 10min) were mechanically stirred, melt extruded and blended with a twin-screw extruder to obtain It is suitable for blending polyethylene resin (melt flow rate is 4.8g / 10min) for hollow blow molding barrels above 200L, and blow molding to obtain 200L hollow blow molding barrels. The processing parameters are the same as in Example 1.

Embodiment 3

[0034] 100 parts of polyethylene resin A (melt flow rate 2.1g / 10min) and 90 parts of polyethylene resin B (melt flow rate 8.5g / 10min) were mechanically stirred, melt extruded and blended with a twin-screw extruder to obtain It is suitable for blending polyethylene resin (melt flow rate is 5.2g / 10min) for hollow blow molding barrels above 200L, and blow molding to obtain 200L hollow blow molding barrels. The processing parameters are the same as in Example 1.

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Abstract

The invention discloses a blended polyethylene resin suitable for hollow blow molding barrels of more than 200L, which is made of the following components in parts by weight: 100 parts of lower melting index polyethylene resin, 50-100 parts of high melting index polyethylene resin share. The invention also discloses a hollow blow molding barrel over 200L prepared by the blended polyethylene resin suitable for hollow blow molding barrels over 200L. The hollow blow molding barrels of more than 200L suitable for the production of hollow blow molding barrels of more than 200L by blending polyethylene resin provided by the present invention have the advantages of easy processing, low energy consumption, uniform wall thickness, high surface smoothness, and excellent mechanical properties. .

Description

technical field [0001] The invention belongs to the technical field of macromolecular materials, and in particular relates to a blended polyethylene resin suitable for hollow blow molding barrels of more than 200 L and its preparation method and application. Background technique [0002] Polyethylene (PE) is the earliest variety of plastic hollow blow molding materials to achieve commercial production, and it is also the fastest growing and most widely used variety. Among them, high-density polyethylene (HDPE) has the advantages of excellent heat resistance and cold resistance, good chemical stability, high rigidity and toughness, good mechanical strength, and good resistance to environmental stress cracking. It has a wide range of applications, including extrusion Packaging films, ropes, braided nets, pipes, extrusion blow molding containers, hollow products, injection molding daily necessities shells, non-load-bearing components, etc. HDPE with different molecular weights...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06
CPCC08L23/06C08L2205/025C08L2207/062
Inventor 王晶沈正林
Owner SHANGHAI FANSHUN PACKAGING