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Polyethylene greenhouse film resin composition with high intensity and ultra-broad width, and its preparation method

A technology of resin composition and polyethylene, applied in the field of polyethylene shed film resin composition, can solve the problems of high tear strength and less "fish eyes", achieve improved melt strength, improved compatibility and enhanced effect significant effect

Active Publication Date: 2012-04-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after greatly improving the melt strength of LLDPE resin, and adding the second component of PP / LLDPE blended grafts to prepare high tear strength, less "fish eyes", and capable of frequent sandstorms in western China There is no relevant report on the ultra-wide greenhouse film (width ≥ 14m, thickness ≥ 80μm) laid under harsh conditions and not prone to bursting

Method used

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  • Polyethylene greenhouse film resin composition with high intensity and ultra-broad width, and its preparation method
  • Polyethylene greenhouse film resin composition with high intensity and ultra-broad width, and its preparation method
  • Polyethylene greenhouse film resin composition with high intensity and ultra-broad width, and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Preparation of PP / LLDPE blended graft a: Take 0.05 parts of DCP and 0.15 parts of acetone and mix them in a beaker, then mix the mixed solution with 80 parts of PP (F401) and 20 parts of LLDPE (101AA) , 4 parts of methacrylic acid mixed together at high speed for 5 minutes, then put the mixed material into a twin-screw extruder for melt grafting reaction, the reaction temperature is 170-220 ° C, the reaction time is 7 minutes, extrusion, cooling, granulation, The PP / LLDPE blended graft a was obtained.

[0055] (2) Preparation of polyethylene shed film resin composition: after mixing 0.09 part of TB and 0.03 part of BPDH with 0.3 part of acetone solvent, then add 5 parts of LLDPE (101AA) powder resin, and mix in a 10-liter high-speed mixer for 3 minutes , to make a premix masterbatch, take out 16 parts of PP / LLDPE blending graft a and premix masterbatch and 95 parts of LLDPE (101AA) powder resin and 0.15 part of antioxidant 1010, 0.15 part of calcium stearate by Add...

Embodiment 2

[0057] (1) Preparation of PP / LLDPE blended graft b: Take 0.09 parts of DCP and 0.2 parts of acetone and mix them in a beaker, then mix the mixed solution with 70 parts of PP (F401) and 30 parts of LLDPE (7042) , 7 parts of methacrylic acid mixed together at high speed for 5 minutes, then put the mixed material into a twin-screw extruder for melt grafting reaction, the reaction temperature is 170-220 ° C, the reaction time is 7 minutes, extrusion, cooling, granulation, The PP / LLDPE blended graft b was obtained.

[0058] (2) Preparation of polyethylene shed film resin composition: After mixing 0.15 parts of TB and 0.08 parts of BPDH with 0.5 parts of xylene solvent, then add 5 parts of LLDPE (7042) pellet resin, and mix in a 10-liter high-speed mixer 3min, make a premix masterbatch, take out 20 parts of PP / LLDPE blended graft b and premix masterbatch and 95 parts of LLDPE (7042) pellet resin and 0.1 part of antioxidant 1010, 0.1 part of zinc stearate Put it into the extruder fr...

Embodiment 3

[0060] (1) Preparation of PP / LLDPE blended graft c: Take 0.07 parts of DTBP and 0.2 parts of acetone and mix them in a beaker, then mix the mixed solution with 95 parts of PP (F401), 5 parts of LLDPE (101AA ), 5 parts of butyl methacrylate were mixed at high speed for 5 minutes, and then the mixed material was added to a twin-screw extruder for melt grafting reaction. The reaction temperature was 170-220 ° C, and the reaction time was 7 minutes. Extrusion, cooling, Granulating to obtain PP / LLDPE blend graft c.

[0061] (2) Preparation of polyethylene shed film resin composition: after mixing 0.2 part of TB and 0.1 part of BPDH with 0.7 part of acetone solvent, then add 5 parts of LLDPE (101AA) powder resin, and mix in a 10-liter high-speed mixer for 3 minutes , to make a premix masterbatch, take out 23 parts of PP / LLDPE blending graft c and premix masterbatch and 95 parts of LLDPE (101AA) powder resin and 0.15 part of antioxidant 1010, 0.15 part of calcium stearate by Add the...

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Abstract

The invention discloses a polyethylene greenhouse film resin composition with high intensity and ultra-broad width and its preparation method, by referring linear low density polyethylene in weight percent, the resin composition comprises: 1) 100% of LLDPE; 2) 0.12%-0.45% of compound crosslinking auxiliary agent (1,1-hydroxyphenyl-hydrogen peroxide and 2,5-dimethyl-2,5-di-tert-butyl peroxide hexane); 3) 0.015%-0.032% of dibenzoyl peroxide; 4) 15%-37% of PP / LLDPE blended grafted polymer. According to the invention, the composition is capable of steadily blowing the ultra-broad width greenhousefilm (broad width is greater than or equal to 14m, the thickness is greater than or equal to 80 mum) on a general film blowing machine group, and the tear strength of film product is high, the product has no fish eye on the appearance, the polyethylene greenhouse film resin composition is capable of resisting 8-9 grade sand storm, and is especially suitable for laying in central and western regions in which the sandstorm occurs frequently. The present invention also discloses a preparation method of the resin composition.

Description

technical field [0001] The invention relates to a polyethylene shed film resin composition, in particular to micro-crosslinking modified linear low density polyethylene (LLDPE) with an organic peroxide and adding a second component PP / LLDPE blended graft, blown An ultra-wide greenhouse film resin composition with high strength and anti-wind and sand and a preparation method thereof. Background technique [0002] my country is a large agricultural country and one of the countries that use the most agricultural plastic films in the world. Among them, the annual consumption of greenhouse films has reached more than 700,000 tons. Agricultural greenhouse films occupy a pivotal position in my country's plastic industry. In recent years, with the development of greenhouse cultivation technology, the requirements for the function of greenhouse film are getting higher and higher. It is no longer a simple vegetable planting, but has been applied to many production fields such as fruit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/06C08K5/14C08J3/24B29C47/92B29B9/06B29C48/92
CPCB29C48/04B29C48/92B29C2948/92561B29C2948/92704B29C2948/92895
Inventor 徐典宏赵燕白竞冰李锦山陈红牛承祥梁天珍谈敦礼薛旭辉何颖李耀
Owner PETROCHINA CO LTD
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