Polyethylene composite with excellent puncture resistance and weather resistance

A weather resistance and puncture resistance technology, applied in the field of polyethylene resin composition, can solve the problems of poor processing performance of agricultural shed film, dart impact strength and anti-ultraviolet aging ability, and achieve good anti-ultraviolet aging ability and excellent weather resistance. , the effect of increasing strength

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP
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  • 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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  • Polyethylene composite with excellent puncture resistance and weather resistance
  • Polyethylene composite with excellent puncture resistance and weather resistance
  • Polyethylene composite 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 the film are shown in Table 1 and Table 2.

[0021] The density is carried out according to GB / T 1033.2-2010, and the method D is used to test after 30 minutes of boiling; the melt mass flow rate (MFR) is tested according to GB / T 3682-2000, and the load is 2.16kg.

[0022] Table 1 Polyethylene resin composition of Examples 1 to 5 (in parts by weight)

[0023]

[0024] Preparation method: a) Polyethylene resin, antioxidant, titanium dioxide, and ultraviolet absorber are put into a high-speed mixer and stirred and mixed at a stirring speed of 1300 rpm, stirring time 12 min, and stirring temperature 38°C; b) adding uniformly mixed materials Melt, plasticize, extrude and pelletize in the twin screw extruder. The screw length to diameter 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 specifically relates to a polyethylene resin composition used to meet the conditions of strong outdoor ultraviolet light use. Background technique [0002] When polyethylene film is used outdoors, it is required to have excellent weather resistance, strength, puncture resistance, etc., such as agricultural film and pasture stretch film. my country is the country that uses the most agricultural plastic film in the world, and the coverage area of ​​agricultural shed film is 2 * 10 11 m 2 , The mulching film covers an area of ​​1*10 11 m 2 . Agricultural greenhouse films can be divided into two categories: ordinary greenhouse films and functional greenhouse films. Functional greenhouse film has some special functions (such as light transfer, anti-aging, dripping, anti-fog, etc.). The development and production of functional gree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K13/02C08K3/22C08K5/134C08K5/13C08K5/3492C08K5/526
CPCC08K2003/2241C08L23/0815C08J5/18C08J2323/08C08J2423/08C08K2201/003C08K2201/006C08L2201/08C08L2203/16C08K13/02C08K5/13C08K5/526C08K5/1345C08K5/3492
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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