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A kind of polyethylene film material and preparation method thereof

A polyethylene film, polyethylene technology, applied in flat products, other household appliances, applications, etc., can solve problems such as migration, and achieve the effects of low cost, reduced migration, and reduced appearance problems

Active Publication Date: 2016-12-07
ZHEJIANG PRET NEW MATERIALS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, traditional antioxidants 1010, 168, etc. are added to the PE system, which may migrate during the use of the PE film.

Method used

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  • A kind of polyethylene film material and preparation method thereof
  • A kind of polyethylene film material and preparation method thereof
  • A kind of polyethylene film material and preparation method thereof

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Embodiment Construction

[0023] Below in conjunction with embodiment, the present invention is described in further detail: in embodiment and comparative example composite material formula, polyethylene selects the LDPE that Yanshan petrochemical company produces for use, and trade mark is IF7B. The antioxidant (AO) used was methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, which is commercially available. The modified layered nano-silicate is selected from nano-clay modified by antioxidant, and its grafting rate is 5-12%, which is self-made for experiment. The grafting rate of the LDPE-g-MAH used is 0.8-1%, which is self-made for the experiment. The ultrafine titanium dioxide used is DLS-210 with 80% particle size distribution of 150-240nm produced by DuPont.

[0024] Dry mix various raw materials and additives in a high-speed mixer for 5 to 15 minutes; put the uniformly mixed raw materials into a twin-screw extruder, melt and extrude, cool and granulate to obtain a polyethylene composite mate...

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Abstract

The invention discloses a novel polyethylene film material and a preparation method thereof. The novel polyethylene film material is prepared from the following raw materials by weight percent: 86-96.5% of polyethylene, 2-8% of modified layered silicate mineral, 1-5% of low density polyethylene grafted maleic anhydride (LDPE-g-MAH), and 0.5-1.0% of ultrafine titanium dioxide. The novel polyethylene film material has the advantages that the original mechanical property of the polyethylene material is maintained by the polyethylene film prepared by the preparation method, meanwhile, the polyethylene film has good barrier property, and an antioxidant is fixed on the surface of layered nanometer silicate, so that the mobility of the antioxidant can be reduced, and the pollution possibility on the food is reduced; the traditional organic ultraviolet stabilizer is replaced by using ultrafine titanium dioxide, the appearance problem caused by migration and precipitation of the ultraviolet stabilizer can be effectively reduced, and meanwhile, titanium dioxide also has a certain antibacterial effect, so that the traditional antibacterial agent can be partially or completely replaced; 3, the preparation method of the polyethylene film provided by the invention is simple in production technology, low in cost and easy to industrialize.

Description

technical field [0001] The invention relates to a novel polyethylene film material and a preparation method thereof, belonging to the field of polymer modification and processing. Background technique [0002] At present, polymer barrier materials mainly include olefin plastics, polyesters, polyamides, polyvinyl chlorides, polyvinyl alcohols, fluorine-containing plastics, liquid crystal polymers, etc. Among them, polyethylene, especially low-density polyethylene (LDPE) is widely used in food, medicine and agricultural product packaging fields due to its low density, non-toxicity, good flexibility, superior chemical stability and molding processing performance. For high-barrier packaging materials, LDPE itself cannot meet the requirements for use, so it is necessary to treat LDPE materials to reduce the solubility and diffusion properties of gases, liquids, and solvents, and improve the barrier properties of the material. At present, the methods suitable for polyethylene mod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L51/06C08K13/06C08K9/04C08K3/34C08K3/22B29C47/92B29C55/28B29L7/00B29C48/92
CPCB29B9/06B29C48/92B29C55/28B29C2948/92514B29C2948/92561B29C2948/92704C08J5/18C08J2323/06C08J2323/08C08J2451/06C08K2201/003C08L23/06C08L23/0815C08L2203/16C08L2205/03C08L2207/066C08L51/06C08K9/04C08K3/34C08K3/346C08K2003/2241B29C48/40B29C48/875B29C2948/92895
Inventor 柒祥芝张鹰张祥福周文
Owner ZHEJIANG PRET NEW MATERIALS