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Nanocomposite composition having high barrier property

A technology of nanocomposite materials and compositions, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., capable of solving problems such as chemical and oxygen resistance limitations

Inactive Publication Date: 2007-08-01
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they are limited in the need for agricultural fertilizers and food packaging or containers with good chemical and oxidative resistance

Method used

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  • Nanocomposite composition having high barrier property
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Examples

Experimental program
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Effect test

Embodiment

[0060] The materials used in the following examples are as follows:

[0061] EVOH: E105B (Kuraray, Japan)

[0062] Nylon 6: EN 500 (KP Chemical)

[0063] HDPE-g-MAH: Compatibilizer, PB3009 (CRAMPTON)

[0064] Polyolefin resin: high-density polyethylene (BD 0390, LG Chemical, melt flow index: 0.3 / 10min, density: 0.949g / cm 3 )

[0065] Clay: Closite 30B (SCP)

[0066] Heat stabilizer: IR 1098 (Songwon Company)

preparation Embodiment 1

[0068] (Preparation of EVOH / intercalated clay nanocomposites)

[0069] 97wt% ethylene-vinyl alcohol copolymer (EVOH; E-105B (ethylene content: 44mol%); Kuraray, Japan; melt flow index: 5.5g / 10min; density 1.14 / cm3) was added to a twin-screw extruder ( SM Platek co-rotating twin-screw extruder; φ40) in the main feeder. Then, 3 wt% of organomontmorillonite as intercalation clay (Southern Intercalation Clay Products, U.S.; C20A) and 0.1 wt. parts of IR1098 as thermal stabilizer based on total 100 wt. Feed into the side feeder of a twin-screw extruder to prepare granular EVOH / intercalated clay nanocomposites. The extrusion temperature conditions were 180-190-200-200-200-200-200° C., the screw rotated at 300 rpm, and the discharge conditions were 40 kg / hr.

preparation Embodiment 2

[0071] (Preparation of nylon 6 / intercalated clay nanocomposites)

[0072] 97 wt% polyamide (Nylon 6) was fed into the main feeder of a twin-screw extruder (SM Platek co-rotating twin-screw extruder; φ40). Then, 3wt% of organomontmorillonite as intercalation clay and 0.1 part by weight of IR 1098 as heat stabilizer based on total 100 parts by weight of polyamide and organomontmorillonite were added to the side feeder of twin-screw extruder respectively, To prepare granular nylon 6 / intercalation clay nanocomposites. The extrusion temperature conditions were 220-225-245-245-245-245-245°C, the screw rotated at 300rpm, and the discharge conditions were 40kg / hr.

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Abstract

A nanocomposite composition having a high barrier property and an article manufactured therefrom are provided. A compatibilizer / intercalated clay nanocomposite and a resin having a barrier property / intercalated clay nanocomposite are dispersed as a specific structure in a polyolefin resin. Accordingly, the compositon has superior mechanical strength, and superior oxygen, organic solvent, and moisture barrier properties.

Description

technical field [0001] The invention relates to a dry-mixed nanocomposite composition, comprising a polyolefin resin, a compatibilizer and a nanocomposite of intercalation clay, a nanocomposite of intercalation clay and a resin with barrier properties, and the product obtained therefrom . Background technique [0002] General-purpose resins, such as polyethylene and polypropylene, are used in many fields because of their excellent plasticity, mechanical properties, and moisture resistance. However, they are limited in the need for agricultural fertilizers and food packaging or containers with good chemical and oxidative resistance. Therefore, the packaging or containers of these materials are made into multiple layers by co-extrusion, lamination, coating, etc. [0003] Ethylene-vinyl alcohol (EVOH) copolymers and polyamides are used in multi-layer plastic products because of their high transparency and good sealing properties. Since these resins are more expensive than ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/02C08J5/18C08L23/00
CPCC08L51/003C08L23/0876C08L23/0815C08K9/08C08K3/346C01P2002/08C08L23/06C08L77/00C08L25/00C09C1/42C08L23/0861C08K9/04C08L23/02C08L2666/02C08L2666/06C08L2666/24B82B3/00B82Y30/00C08K7/10C08K13/02
Inventor 金明镐金民基金世贤吴咏卓申在容梁荣哲
Owner LG CHEM LTD
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