Easily-processed polyethylene composition

A polyethylene and composition technology, applied in the field of polyethylene film processing, can solve the problems of little improvement in optical properties, achieve high critical shear rate, reduce haze, and high production rate

Inactive Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when fluoroelastomers are used as processing aids, the optical properties of film products are not improved much

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The component distribution ratio of this example is: 100 parts of polyethylene, 0.01 part of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, tris(2,4-di-tert-butyl 0.01 part of phosphite, 0.01 part of dilauryl thiodipropionate, 0.03 part of magnesium stearate, and 0.05 part of 12-hydroxy calcium stearate (particle size 20 μm).

[0029] The polyethylene powder resin in this example is copolymerized with ethylene and butene-1, and is polymerized using a silica-free carrier slurry catalyst, MFR=2.0g / 10mim, density 0.920g / cm 3 .

Embodiment 2

[0031] The component distribution ratio of this embodiment is: 100 parts of polyethylene powder resin, 0.05 part of n-octadecyl propionate, 0.05 part of n-octadecyl alcohol ester of β-(3,5-di-tert-butyl-4-hydroxyphenyl), three (2, 0.02 part of 4-di-tert-butylphenyl) phosphite, 0.03 part of dilauryl thiodipropionate, 0.05 part of zinc stearate, 0.1 part of magnesium 2-hydroxystearate (particle size 6 μm).

[0032] The polyethylene powder resin in this example is copolymerized with ethylene and butene-1, and is polymerized using a silica-free carrier slurry catalyst, MFR=2.0g / 10mim, density 0.920g / cm 3 .

Embodiment 3

[0034] The component distribution ratio of this embodiment is: 100 parts of polyethylene powder resin, 0.03 parts of tetrakis [β-(3,5 di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, tris (2,4- 0.02 parts of di-tert-butylphenyl) phosphite, 0.02 parts of dilauryl thiodipropionate, 0.7 parts of magnesium stearate, and 0.2 parts of 12-hydroxy magnesium stearate (8 μm).

[0035] The polyethylene powder resin in this example is copolymerized with ethylene and butene-1, and is polymerized using a silica-free carrier slurry catalyst, MFR=2.0g / 10mim, density 0.920g / cm 3 .

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PUM

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Abstract

The invention provides an easily-processed polyethylene composition, and belongs to the technical field of processing of polyethylene films. The easily-processed polyethylene composition is characterized by being prepared from the following components in parts by weight: 100 parts of polyethylene, 0.03 to 0.1 part of an antioxidant, 0.05 to 0.08 part of an acid acceptor, and 0.05 to 0.5 part of a processing auxiliary; a hydroxystearic acid salt compound is used as the processing auxiliary; a mixture of an hindered phenol antioxidant, a phosphite ester antioxidant and a thioester antioxidant is used as the antioxidant. Compared with the existing polyethylene film, the easily-processed polyethylene composition has the advantages of being small in shearing viscosity and screw torque, high in critical shearing rate, fast to produce the film, and outstanding in optical performance.

Description

Technical field [0001] A easily processed polyethylene composition belongs to the field of polyethylene film processing technology. Background technique [0002] Linear low -density polyethylene (LLDPE) is an important polyethylene, which has a wide range of applications and can be used in many fields such as thin films, injection molding, rolling plastic, cables.Among them, the film is the largest area of LLDPE resin application, accounting for more than 70%of the entire LLDPE resin.Increasing the output during the production process is very important for the film processing enterprise, but the excessive extrusion speed may cause the melting rupture, resulting in shark skin phenomenon on the surface of the film to affect the appearance of the film.Therefore, the development of a thin film that is easy to process and facilitates high -speed extrusion can improve the current problems, improve the production efficiency of thin film enterprises and reduce energy consumption. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K5/098
CPCC08K5/00C08J5/18C08J2323/08C08K5/098C08K5/1345C08K5/372C08K5/526C08K2201/003C08K2201/014C08L2203/16C08L23/0815
Inventor 郭锐王群涛王日辉许平高凌雁石晶
Owner CHINA PETROLEUM & CHEM CORP
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