A polyethylene composition with excellent puncture resistance and weather resistance

A technology with weather resistance and puncture resistance, which is applied in the field of polyethylene resin composition and polyethylene composition, can solve the problems of agricultural shed film processing performance, dart impact strength and anti-ultraviolet aging ability, and achieve good anti-ultraviolet aging Excellent performance, excellent weather resistance, and high puncture resistance

Active Publication Date: 2016-08-17
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The agricultural shed film of the invention has poor processing performance, dart impact strength and anti-ultraviolet aging ability

Method used

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  • A polyethylene composition with excellent puncture resistance and weather resistance
  • A polyethylene composition with excellent puncture resistance and weather resistance
  • A polyethylene composition with excellent puncture resistance and weather resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~5

[0020] The proportioning components of the polyethylene resin composition for film are shown in Table 1 and Table 2.

[0021] Density is tested according to GB / T 1033.2-2010, using method D, tested after boiling for 30 minutes; melt mass flow rate (MFR) is tested according to GB / T 3682-2000, with a load of 2.16kg.

[0022] Table 1 Example 1 ~ 5 polyethylene resin composition (by weight)

[0023]

[0024] Preparation method: a) polyethylene resin, antioxidant, titanium dioxide, and ultraviolet absorber are put into a high-speed mixer and stirred at a stirring speed of 1300 rpm, stirring time is 12 minutes, and stirring temperature is 38°C; b) the uniformly mixed materials are added to Melt, plasticize, extrude, and pelletize in a twin-screw extruder. The screw aspect ratio is 33, and the processing temperature is 200°C.

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Abstract

The invention discloses a polyethylene composite with excellent puncture resistance and weather resistance, and belongs to the field of high polymer materials. The composite is characterized by being prepared from the following components in parts by weight: 80-90 parts of polyethylene resin A, 5-15 parts of polyethylene resin B, 0.3-0.7 parts of antioxidant, 1.5-2.5 parts of nano titanium oxide and 0.1-0.3 parts of ultraviolet absorber, wherein the polyethylene resin A is a copolymer of ethylene and 1-butylene or / and 1-hexylene; the density is 0.917-0.924g / cm<3>; a melt flow rate (MFR) is 1.6-2.4g / 10min; the polyethylene resin B is metallocene polyethylene; the density is 0.916-0.922g / cm<3>; and an MFR is 37-43g / 10min. The composite has good ultraviolet ageing resistance, good puncture resistance and higher physical and mechanical strength; and the strength of a film material after long-term use under an ultraviolet condition can be improved.

Description

technical field [0001] A polyethylene composition with excellent puncture resistance and weather resistance belongs to the field of polymer materials, and in particular relates to a polyethylene resin composition used to meet the conditions of strong outdoor ultraviolet rays. Background technique [0002] When polyethylene film is used outdoors, it is required to have excellent weather resistance, strength, puncture resistance, etc. in many fields, such as agricultural film and grass wrapping film. my country is the country that uses the largest amount of agricultural plastic film in the world, and the agricultural shed film covers an area of ​​2*10 11 m 2 , the covering area of ​​plastic film reaches 1*10 11 m 2 . Agricultural shed film can be divided into two categories: ordinary shed film and functional shed film. Functional film has some special functions (such as light transfer, anti-aging, dripping, anti-fog, etc.). The development and production of functional gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08K13/02C08K3/22C08K5/134C08K5/13C08K5/3492C08K5/526
CPCC08K2003/2241
Inventor 王群涛郭锐唐岩许平王日辉苑东兴石晶
Owner CHINA PETROLEUM & CHEM CORP
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