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Polyethylene composition and antistatic film

A technology of polyethylene and composition, which is applied in the field of polyethylene composition and antistatic film, and can solve the problems of easy cracking of the film and poor film forming property

Active Publication Date: 2017-04-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the poor film-forming properties and easy rupture of the film when the existing polyethylene raw material is prepared by the flat film stretching method to prepare the polyethylene antistatic film, that is, it is not suitable for the preparation of the antistatic film by the flat film stretching method. defects, and provide a new polyethylene composition and antistatic film made of the polyethylene composition

Method used

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  • Polyethylene composition and antistatic film
  • Polyethylene composition and antistatic film

Examples

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Embodiment approach

[0032] According to a preferred embodiment of the present invention, the polyethylene composition is figure 1 Prepared in the shown multi-reactor parallel device, described multi-reactor parallel device comprises first reactor 1, second reactor 2, third reactor 3, solid / liquid (gas) separator 4, homogenizer The silo 5 and the melt granulation system 6, wherein the first reactor 1, the second reactor 2 and the third reactor 3 are connected in parallel, and the number of the solid / liquid (gas) separator 4 is three One, communicated with the first reactor 1, the second reactor 2 and the third reactor 3 respectively, the component A produced by the first reactor 1, the component B produced by the second reactor 2 and the component B produced by the third reactor The component C prepared by the reactor 3 is carried out phase separation in different solid / liquid (gas) separators 4 respectively, and then the component A, component B and component C after the phase separation will be ...

Embodiment 1

[0048] This example is used to illustrate the polyethylene composition and antistatic film provided by the present invention.

[0049] The polyethylene composition provided in this embodiment contains component A, component B, component C, conductive filler and lubricant. Component A, component B and component C are linear low density polyethylene (LLDPE) of ethylene / alpha olefin copolymerization, and all adopt identical catalyst system (Ziegler-Natta catalyst, prepared by CN101838351A embodiment 1 The obtained Ziegler-Natta catalyst system, the same below) is prepared. The properties of component A, component B, component C, conductive filler and lubricant are as follows:

[0050] Melt index MI of component A A =2.0g / 10min, density ρ A =0.913g / cm 3 , molecular weight distribution index M w / M n =6.4, the molar content of α-olefin comonomer=8.9mol%;

[0051] Melt index MI of component B B =4.0g / 10min, density ρ B =0.913g / cm 3 , molecular weight distribution index M ...

Embodiment 2

[0061] This example is used to illustrate the polyethylene composition and antistatic film provided by the present invention.

[0062]The polyethylene composition provided in this embodiment contains component A, component B, component C, conductive filler and lubricant. Component A, component B and component C are all ethylene / α-olefin copolymerized linear low-density polyethylene (LLDPE), and are all prepared by using the same catalyst system (Ziegler-Natta catalyst). The properties of component A, component B, component C, conductive filler and lubricant are as follows:

[0063] Melt index MI of component A A =0.01g / 10min, density ρ A =0.930g / cm 3 , molecular weight distribution index M w / M n =5.5, the molar content of α-olefin comonomer=2.1mol%;

[0064] Melt index MI of component B B =9.0g / 10min, density ρ B =0.930g / cm 3 , molecular weight distribution index M w / M n =4.8, the molar content of α-olefin comonomer=2.8mol%;

[0065] Melt index MI of component C ...

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Abstract

The present invention provides a polyethylene composition and an antistatic film. The polyethylene composition comprises a conductive filler, a component A, a component B and a component C; the component A is a linear low-density polyethylene formed through copolymerization of ethylene / alpha olefin, and the linear low-density polyethylene possesses a melt index MI of 0.01-3.5 g / 10 min and a density rou of 0.880-0.936 g / cm<3> when the temperature is 190 DEG C and the load is 2.16 kg; the component B is a linear low-density polyethylene formed through copolymerization of ethylene / alpha olefin, and the linear low density polyethylene has a melt index MI of 3.6-9.9 g / 10 min and a density rouof 0.910-0.930 g / cm<3> when the temperature is 190 DEG C and the load is 2.16 kg; the component C is a linear low-density polyethylene formed through copolymerization of ethylene / alpha olefin, and the linear low density polyethylene component possesses a melt index MI<C> of 10-80 g / 10 min and a density rou<C> of 0.880-0.930 g / cm<3> when the temperature is 190 DEG C and the load is 2.16 kg. When a polyethylene film is prepared by a flat membrane stretching method, not only the drawing ratio is high, the film formation rate is high, but also the obtained film has good antistatic properties.

Description

technical field [0001] The present invention relates to a polyethylene composition and an antistatic film. Background technique [0002] Biaxially Oriented Polyethylene (BOPE) film is a film material formed by a polyethylene (PE) resin with a special molecular structure through a biaxial stretching process. Compared with the polyethylene film produced by the existing extrusion blow molding process and extrusion casting process, BOPE film has greatly improved physical properties, and has high mechanical strength, good puncture resistance and impact resistance, and excellent optical properties. , good heat sealing and moisture resistance, energy saving and environmental protection, etc., especially when the thickness is reduced by 50%, the key performance can still reach the performance of other polyethylene films. Therefore, BOPE film can be widely used in packaging bags, heavy packaging bags, vacuum heat-sealing films, low-temperature packaging films, composite films, medic...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L71/08C08K7/24C08K3/04C08K3/22
CPCC08J5/18C08J2323/08C08J2423/08C08K2201/001C08K2201/003C08K2201/004C08L23/0815C08L2201/04C08L2203/16C08L2205/025C08L2205/035C08L2314/02C08L71/00C08K7/24C08K3/04C08K2003/2237
Inventor 权慧张师军高达利吕明福尹华刘建叶郭鹏徐凯
Owner CHINA PETROLEUM & CHEM CORP
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