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Modified master batch for polyethylene films as well as preparation and use methods thereof

A technology of polyethylene film and polyethylene powder, which is applied in the field of modified masterbatch, can solve the problems of film tearing performance, falling dart impact strength, etc., and achieve the effect of improving film clarity and comprehensive performance

Active Publication Date: 2014-01-15
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composition given in this patent includes LLDPE, antioxidant 1010, antioxidant 168, calcium hexahydrophthalate, and zinc stearate. The haze and gloss of the film blown by the composition are improved, but Compared with the control film without adding calcium hexahydrophthalate, the tear performance and dart impact strength were reduced

Method used

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  • Modified master batch for polyethylene films as well as preparation and use methods thereof
  • Modified master batch for polyethylene films as well as preparation and use methods thereof
  • Modified master batch for polyethylene films as well as preparation and use methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Polyethylene pellet resin (copolymerization of ethylene and butene-1, MFR=2.0g / 10mim, density 0.920g / cm 3 ) 99 copies

[0034] Modified masterbatch 1 1 parts

[0035] Screw aspect ratio: 30

[0036] Screw combination: 8 sections of shear block, 3 sections of reverse shear

[0037] Processing temperature: 190℃

Embodiment 2

[0039] Polyethylene pellet resin (copolymerization of ethylene and butene-1, synthesized by slurry catalyst, MFR=2.0g / 10mim, density 0.918g / cm 3 )

[0040] 99 copies

[0041] Modified masterbatch 21 parts

[0042] High stirring blending direct blown film

Embodiment 3

[0044] Polyethylene pellet resin (copolymerization of ethylene and hexene-1, synthesized by slurry catalyst, MFR=2.0g / 10mim, density 0.920g / cm 3 )

[0045] 98 copies

[0046] Modified masterbatch 3 2 parts

[0047] Screw aspect ratio: 35

[0048] Screw combination: 6 sections of shear block, 3 sections of reverse shear

[0049] Processing temperature: 200℃

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Abstract

The invention relates to processing fields of such polyethylene films as agricultural films, packaging films, stretching and wrapping films, and the like, and in particular relates to a modified master batch for polyethylene films as well as preparation and use methods thereof. The modified master batch is characterized by being prepared from the following raw materials in parts by weight: 100 parts of polyethylene powder resin, 0.025-0.15 part of antioxidant, 3-15 parts of nucleating agent A and 3-15 parts of nucleating agent B, wherein the nucleating agent A is selected from hexahydrophthalic acid metal salts, and the nucleating agent B is selected from sorbitols and derivatives thereof. The modified master batch for polyethylene films provided by the invention has the advantages that a polyethylene composition containing the modified master batch can be used as a film product including an agricultural film, a packaging film, a stretching and wrapping film, and the like, the tearing resistance force of the film prepared by polyethylene resin added with the modified master batch provided by the invention can be increased by more than 40%, the haze is decreased by 60% to the uttermost, and the film clarity is increased by more than 10%, so that the comprehensive performance of the film product is improved.

Description

technical field [0001] The invention relates to the field of processing polyethylene films such as agricultural films, packaging films, and stretch wrapping films, and in particular to a modified masterbatch applied to polyethylene films and methods for preparing and using the same. Background technique [0002] Film products are an important field of polyethylene (PE) resin application today, and more than half of polyethylene resin is used in the film field. Polyethylene film is widely used in agriculture, packaging and other fields. With the development of society and technology, the requirements for the comprehensive performance of polyethylene film are getting higher and higher. Tear resistance is an important index to measure film performance. Film products may be torn due to external force during use. Sufficient tear resistance and ductility can reduce tear transmission and improve film performance. Optical performance is also one of the film evaluation indicators. B...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/20C08K5/134C08K5/526C08K5/098C08J3/22C08J5/18B29C47/92B29C48/92
CPCC08J3/226C08J5/18C08J2323/08C08J2423/08C08K5/005C08K5/0083C08L23/0815C08L2201/10C08L2203/16B29C48/04B29C48/40
Inventor 郭锐王群涛唐岩王日辉
Owner CHINA PETROLEUM & CHEM CORP
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