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High-barrier nylon as well as preparation method and application thereof

A high-barrier, nylon technology, applied in the field of polymer materials, can solve the problems of reducing food storage time, food deterioration, and oxidation of contents, and achieve the effects of stable properties, increased compatibility, and simple operation steps

Active Publication Date: 2022-05-27
CHINA RESOURCES PACKAGING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when nylon is used as food packaging, there are still the following problems: the barrier of nylon is a passive physical barrier, and during the packaging process, a part of the oxygen that has entered the container itself will remain more or less, and this part has entered the container. Oxygen cannot be eliminated by passive barriers, and it will oxidize the contents to a certain extent, thereby reducing the storage time of food and causing food to deteriorate in a short time

Method used

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  • High-barrier nylon as well as preparation method and application thereof

Examples

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Embodiment 1

[0029] An embodiment of the high-barrier nylon and its preparation method and application of the present invention.

[0030] The preparation method of the product comprises the following steps:

[0031] Put 99 parts of nylon 6 (produced by Shenma Group) into the main feeding port of the twin-screw extruder, and then inject 0.001 part of supercritical fluid carbon dioxide and 1 part of unsaturated binary into the side feeding port of the twin-screw extruder. Carboxylic acid fumaric acid and 1.0 part of transition metal element catalyst cobalt isooctanoate are mixed, melted and kneaded at 240°C, cast, extruded and diced to obtain the high-barrier nylon particles. The nylon particles are injected by an injection molding machine and blown by a blow molding machine to obtain a high-barrier nylon bottle.

Embodiment 2

[0033] An embodiment of the high-barrier nylon and its preparation method and application of the present invention.

[0034] The only difference between this example and Example 1 is that the added part of the supercritical carbon dioxide is 0.005 part.

Embodiment 3

[0036] An embodiment of the high-barrier nylon and its preparation method and application of the present invention.

[0037] The only difference between this example and Example 1 is that the added part of the supercritical carbon dioxide is 0.01 part.

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Abstract

The invention discloses high-barrier nylon as well as a preparation method and application thereof, and belongs to the field of polymer materials. According to the product disclosed by the invention, the supercritical fluid is introduced into a nylon matrix as a reaction aid, so that the compatibility of all the components is improved, and meanwhile, the physical dispersion of all the components is realized; besides, unsaturated dicarboxylic acid is introduced into the components, dispersed in a nylon matrix and subjected to a polymerization reaction with the nylon matrix, and an obtained polymerization product reacts with surrounding oxygen under the action of a catalyst, so that after the high-barrier nylon is prepared into a packaging material, internal residual oxygen can be completely consumed, and the internal oxygen content can be controlled to be lower than 1.5 ppm; and physical barrier and chemical barrier to oxygen are really realized. The invention also discloses a preparation method of the high-barrier nylon and a food packaging material prepared from the high-barrier nylon.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a high-barrier nylon and a preparation method and application thereof. Background technique [0002] Nylon, such as nylon 6, nylon 66, nylon 56, MXD6 (polym-xylylenediamine adipic acid), etc., because of its certain barrier effect, one of their important uses is as food packaging materials. These materials are processed It can be made into bottles by injection / blow molding, or into films and sheets by casting, mainly used for meat products (such as ham), fresh food (such as vegetables, fruits, eggs, soy products, etc.) , cakes, fish and seafood packaging to delay the penetration of oxygen from the outside into the packaging and reduce the oxygen content inside. [0003] However, when nylon is used as food packaging, there are still the following problems: the barrier of nylon is a passive physical barrier, and during the packaging process, a part of the oxygen that has entered t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/48C08L77/02C08L77/06
CPCC08G69/48C08L77/02C08L77/06C08L2203/10C08L2203/16C08L2201/14Y02P20/54
Inventor 高俊袁翔胡广君曹叶皖郭昊
Owner CHINA RESOURCES PACKAGING MATERIALS CO LTD
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