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Polyolefin resin composition with improved processing rheology property, and preparation method thereof

A technology for polyolefin resin and resin composition, applied in the field of polyolefin resin composition and preparation thereof, can solve the problems of limitation, limited source of lanthanum stearate compound, complex synthesis of hyperbranched polyester-amide polymer, etc. Reduced tangling, improved processing rheology, torque and viscosity reduction

Active Publication Date: 2013-09-25
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Among the above-mentioned techniques of using additives to improve the rheological properties of polyolefin processing, the synthesis of hyperbranched polyester-amide polymers is relatively complicated, and compound processing aids need to be compounded before they can be used. The source of lanthanum stearate compounds is limited, and compatibilized Polymer processing aids require the use of block or end-functionalized oligomers as surfactants, which limit their application

Method used

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  • Polyolefin resin composition with improved processing rheology property, and preparation method thereof
  • Polyolefin resin composition with improved processing rheology property, and preparation method thereof
  • Polyolefin resin composition with improved processing rheology property, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] First, 90.0 parts of LLDPE and 3 parts of polyethylene-grafted maleic anhydride were granulated to obtain a blend with a twin-screw extruder, the screw speed was 100 rpm, and the processing temperature was 190°C. Then the blend is uniformly mixed with 1 part of polyvinyl alcohol and 6 parts of sodium dodecylbenzenesulfonate in a high mixer, and then granulated with a twin-screw extruder to obtain a polyolefin resin composition, and the screw speed is 100 RPM, processing temperature 190°C.

[0048] On a Haake90 torque rheometer, the temperature was 170° C., and the rotation speed was 30 rpm, and the mixture was kneaded for 10 minutes, and the data of torque variation with time was recorded until the variation became stable.

Embodiment 2

[0050] First, 98.5 parts of LLDPE and 0.1 part of polypropylene-grafted acrylic acid were pelletized with a twin-screw extruder to obtain a blend, the screw speed was 100 rpm, and the processing temperature was 190°C. Then the blend is uniformly mixed with 1 part of polyacrylamide and 0.4 part of sodium lauryl sulfate in a high mixer, and then granulated with a twin-screw extruder to obtain a polyolefin resin composition, and the screw speed is 100 rpm. points, the processing temperature is 190°C. Others are the same as embodiment 1.

Embodiment 3

[0052] Firstly, 97.5 parts of LLDPE and 0.5 parts of polyethylene grafted maleic anhydride were granulated to obtain a blend with a twin-screw extruder, the screw speed was 150 rpm, and the processing temperature was 200°C. Then the blend is uniformly mixed with 0.5 parts of polyvinyl alcohol and 1.5 parts of potassium monododecyl phosphate in a high mixer, and then granulated with a twin-screw extruder to obtain a polyolefin resin composition, and the screw speed is 150 revolutions / min, the processing temperature is 200°C. Others are the same as embodiment 1.

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Abstract

The invention discloses a polyolefin resin composition with improved processing rheology property, and a preparation method thereof. The polyolefin resin composition comprises polyolefin, a surfactant, a polar polymer and a water-soluble polymer. The preparation method comprises: carrying out extrusion blending on a polyolefin resin and a polar polymer to obtain a polarity-improved blend, and carrying out mixing extrusion on the blend, a surfactant and a water-soluble polymer to obtain a composition. With the polyolefin composition, melt torque of polyolefin can be significantly reduced, and processing rheology property of polyolefin can be improved.

Description

technical field [0001] The invention relates to a polyolefin resin composition and a preparation method thereof, in particular to a polyolefin resin composition comprising a polyolefin resin, a surfactant, a polar polymer, and a water-soluble polymer with improved processing rheological properties and its preparation method. Background technique [0002] Polyolefin resins include polyethylene and polypropylene, which are the main components of the five general-purpose synthetic resins. In 2006, the world's polyethylene output was 63.82 million tons, and the polypropylene output was 41.45 million tons. The total output ranked first in general-purpose synthetic resins. Polyolefin is also the largest user of petrochemical basic raw materials ethylene and propylene. 50% of foreign ethylene output is used to produce polyethylene, and propylene is used as a raw material for polypropylene production as high as 57%. Therefore, foreign large-scale petrochemical companies have inve...

Claims

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Application Information

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IPC IPC(8): C08L23/00C08L23/06C08L23/08C08L23/12C08L51/06C08L33/26C08L29/04C08L39/06B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40
Inventor 李朋朋张兰杨世元梁天珍王美玲魏福庆许惠芳薛山伍剑孙世萍
Owner PETROCHINA CO LTD
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