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Gas-barrier nanocomposite composition and article using the same

A nano-composite material and composition technology, which is applied in the field of nano-composite material compositions with excellent impermeability and plasticity, can solve problems such as unsatisfactory impermeability, and achieve excellent mechanical strength, excellent oxygen, and impermeability. excellent effect

Active Publication Date: 2007-06-27
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, satisfactory impermeability was not obtained

Method used

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  • Gas-barrier nanocomposite composition and article using the same
  • Gas-barrier nanocomposite composition and article using the same
  • Gas-barrier nanocomposite composition and article using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0063] The materials used in the following examples are as follows:

[0064] EVOH: E105B (Kuraray, Japan)

[0065] Amorphous nylon: SELAR 2072 (DuPont, USA)

[0066] Nylon 6, 12: Zytel 158L (DuPont, USA)

[0067] Nylon 6: EN 500 (KP Chemical)

[0068] HDPE-g-MAH: Compatibilizer, PB3009 (CRAMPTON)

[0069] HDPE: ME6000 (LG Chem)

[0070] Ionomer: SURLYN 8527 (DuPont, USA)

[0071] Clay: Closite 30B (SCP)

[0072] Heat stabilizer: IR 1098 (Songwon Co., Ltd.)

preparation Embodiment 1

[0074] (Preparation of EVOH / intercalated clay nanocomposites)

[0075] 97wt% ethylene-vinyl alcohol copolymer (EVOH; E-105B (ethylene content: 44mol%); Kuraray, Japan; melt index: 5.5g / 10min; density: 1.14g / cm 3 ) into the main hopper of a twin-screw extruder (SM Platek co-rotating twin-screw extruder; 40). Then, 3 wt% of organomontmorillonite (Southern IntercalatedClay Products, U.S.; C2OA) as intercalation clay and 0.1 wt. parts of IR as heat stabilizer based on a total of 100 wt. 1098 were placed into the side feeder of a twin-screw extruder to prepare sheet-shaped EVOH / intercalated clay nanocomposites. The extrusion temperature conditions were 180-190-200-200-200-200-200° C., the screw was rotated at 300 rpm, and the discharge conditions were 15 kg / hr.

preparation Embodiment 2

[0077] (Preparation of nylon 6 / intercalated clay nanocomposites)

[0078] 97 wt% polyamide (Nylon 6) was charged into the main hopper of a twin-screw extruder (SM Platek co-rotating twin-screw extruder; φ40). Then, 3 wt% of organomontmorillonite as intercalation clay and 0.1 part by weight of IR 1098 as heat stabilizer based on a total of 100 parts by weight of polyamide and organomontmorillonite were put into the twin-screw extruder respectively. Side feeder to prepare sheet-shaped nylon 6 / intercalated clay nanocomposites. The extrusion temperature conditions were 220-225-245-245-245-245-245°C, the screw was rotated at 300 rpm, and the discharge conditions were 40 kg / hr.

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Abstract

Provided are a nanocomposite composition having barrier properties and an article manufactured therefrom. The compositon is prepared by dry-blending a polyolefin resin, a melt blend of a resin having barrier properties and a nanocomposite having barrier properties, and a compatibilizer. The compositon has superior barrier properties and moldability, and thus is useful for manufacturing a sheet or film having barrier properties.

Description

technical field [0001] The invention relates to a gas-barrier nanocomposite composition and products prepared therefrom, more particularly, to a method of dry-mixing polyolefin resin with a resin with barrier properties and a nanocomposite material with barrier properties A nanocomposite material composition with excellent impermeability and plasticity formed by a melt mixture and a compatibilizer, and a product manufactured therefrom. Background technique [0002] General-purpose resins such as polyethylene and polypropylene are used in many fields due to their excellent plasticity, mechanical properties, and moisture barrier properties. However, the use of these resins is limited to packaging or containers for agricultural fertilizers and foods that require excellent chemical and oxygen barrier properties. [0003] Ethylene-vinyl alcohol (EVOH) copolymers and polyamide resins have transparency and excellent gas barrier properties. However, since these resins are more exp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/04C08K9/00C08L23/26C08J5/18B32B27/32
CPCB82Y30/00C08J3/20C08J5/00C08K3/346C08K7/26C08L23/04C08L23/16C08L29/04C08L77/00
Inventor 金明镐金民基梁荣哲申在容
Owner LG CHEM LTD
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