Transparent anti-static polyethylene thin film masterbatch

A polyethylene film, antistatic technology, applied in the field of polyethylene film masterbatch, can solve the problems of difficult processing, poor film transparency, large size, etc., and achieve good antistatic effect

Active Publication Date: 2012-08-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to structural reasons, linear low density polyethylene has high melt viscosity in blown film processing and processing is difficult
When the melt is cooled, a large number of crystalline and supramolecular structures are formed, and the size of this crystalline structure is large enough to cause scattered light, making the film less transparent

Method used

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  • Transparent anti-static polyethylene thin film masterbatch
  • Transparent anti-static polyethylene thin film masterbatch
  • Transparent anti-static polyethylene thin film masterbatch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] With low-density polyethylene resin as carrier resin (Daqing Petrochemical Company product 2426H, melt flow rate is 2.0g / 10min, density is 0.9202g / cm 3 , molecular weight distribution is 4.25), water-soluble polymer is polyacrylic acid (Shandong Guoan Chemical Co., Ltd. product), polyethylene grafted maleic anhydride (Dalian Haizhou Chemical Co., Ltd. product), with 1,3,2,4-two (4-Methylbenzylidene) sorbitol (Shanxi Chemical Research Institute product) is used as transparent additive, with 1010 / 168 (1 / 1) (Ciba company product) as antioxidant, with zinc stearate (Shanghai New Jiu Chemical Co., Ltd.) is a dispersant.

[0035] Each group distribution ratio in the embodiment 1 of table 1

[0036]

[0037] All the materials were put into a high mixer and mixed for 2 minutes, discharged, and pelletized by a twin-screw extruder with a screw speed of 100 rpm and a processing temperature of 220°C to obtain a transparent antistatic film masterbatch.

Embodiment 2

[0039] The water-soluble polymer is polyacrylamide (Hebei Songyang Chemical Industry Co., Ltd. product), and the transparent additive is two-(to-ethylbenzylidene isopropyl) sorbitol) (Mileliken company product), and others are with embodiment 1 .

[0040]Each group distribution ratio in the embodiment 2 of table 2

[0041]

[0042] With the preparation method of Example 1, a transparent antistatic film masterbatch was prepared.

Embodiment 3

[0044] The water-soluble macromolecule is polyvinyl alcohol (product of Beijing Chemical Plant), and the transparent additive is p-chloromethyl dibenzylidene sorbitol (product of Milliken Company), with 1010 (product of Ciba Company) as antioxidant, other same Example 1.

[0045] Each group distribution ratio in the embodiment 3 of table 3

[0046]

[0047] With the preparation method of Example 1, a transparent antistatic film masterbatch was prepared.

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Abstract

The invention provides a transparent anti-static polyethylene thin film masterbatch which mainly comprises 70-85 parts by weight of low-density polyethylene resin, 10-20 parts by weight of water-soluble polymer, 2-4 parts by weight of polyethylene grafted maleic anhydride, 1-4 parts by weight of transparent additive and 0-2.5 parts by weight of other additives, wherein the melt flow rate of the low-density polyethylene resin is 2.0-4.0g / 10min, the density is 0.910-0.927g / cm3, and the molecular weight distribution is 3.0-5.0. When in use, 5-20% (by weight) of the masterbatch is added in the polyethylene resin, and then a polyethylene anti-static thin film with the surface resistance of below 1012 omega can be blown out; furthermore, the thin film has good transparency and good mechanical properties.

Description

technical field [0001] The invention relates to a polyethylene composition, in particular to a polyethylene film masterbatch. technical background [0002] The scope of application of polyethylene (PE) in the film field is expanding day by day due to its superior comprehensive properties. Since polyethylene itself has a non-polar molecular structure, its molecular chains composed of covalent bonds can neither ionize nor transfer free electrons. Once charged due to the gain and loss of electrons due to friction, it is more difficult to eliminate, and it is a high-insulation substance. In the processing and application of polyethylene film, it is not uncommon to generate static electricity and cause various disadvantages. For example, when using film to package powdered goods, the sealing strength is often greatly reduced due to the electrostatic dust absorption on the heat-sealed surface, which has become an important cause of serious damage to the packaging during product ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L51/06C08L33/02C08L33/26C08L29/04C08L39/08
Inventor 李朋朋梁天珍魏福庆许惠芳邵月君郭义谢昕刘永军刘敏樊洁王卓妮
Owner PETROCHINA CO LTD
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