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High-barrier thin film modified by nano rare earth nucleating agent

A high-barrier film and nano-rare-earth technology, which is applied in the field of biaxially stretched film and barrier film, can solve the problems of low strength, high haze, and high brittleness, and achieve the effect of improving elongation at break

Active Publication Date: 2015-02-18
厦门长塑实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many problems in the performance of PA6 modified by MXD6, such as low strength, high brittleness, and high haze

Method used

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  • High-barrier thin film modified by nano rare earth nucleating agent
  • High-barrier thin film modified by nano rare earth nucleating agent
  • High-barrier thin film modified by nano rare earth nucleating agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The high barrier film is prepared according to the following formula: the content of MXD6 in the surface layer 1 is 30%, the content of PA6 is 64.5%, the content of anti-sticking masterbatch is 2%, the content of maleic anhydride grafted MXD6 is 3%, oxidation The content of cerium is 0.5%; the content of MXD6 in the core layer is 99.5%, and the content of cerium oxide is 0.5%; the content of MXD6 in the surface layer 2 is 30%, the content of PA6 is 64.5%, and the content of the anti-sticking masterbatch is 2%, the content of maleic anhydride grafted MXD6 is 3%, and the content of cerium oxide is 0.5%.

[0026] The preparation process of the high barrier film is as follows: the raw materials mixed according to the above formula are respectively melted in three extruders, and the melt is cast from a T-die to a chill roll with a surface temperature of 20°C for quenching casting. The thickness of the cast piece is about 150μm; then the above-mentioned cast piece is sent to the...

Embodiment 2

[0028] The high barrier film is prepared according to the following formula: in the surface layer 1, the content of MXD6 is 30%, the content of PA6 is 55%, the content of anti-sticking masterbatch is 2%, the content of maleic anhydride grafted MXD6 is 8%, and lanthanum oxide The content of MXD6 is 5%; the content of MXD6 in the core layer is 95% and the content of lanthanum oxide is 5%; the content of MXD6 in the surface layer 2 is 30%, the content of PA6 is 55%, and the content of anti-sticking masterbatch is 2 %, the content of maleic anhydride grafted MXD6 is 8%, and the content of lanthanum oxide is 5%.

[0029] The preparation process of the high barrier film is the same as in Example 1.

Embodiment 3

[0031] The high barrier film is prepared according to the following formula: in the surface layer 1, the content of MXD6 is 30%, the content of PA6 is 60.5%, the content of anti-sticking masterbatch is 2%, the content of maleic anhydride grafted MXD6 is 5.5%, rubidium oxide The content of MXD6 is 2%; the content of MXD6 in the core layer is 98%, and the content of rubidium oxide is 2%; the content of MXD6 in the surface layer 2 is 30%, the content of PA6 is 60.5%, and the content of anti-sticking masterbatch is 2 %, the content of maleic anhydride grafted MXD6 is 5.5%, and the content of rubidium oxide is 2%.

[0032] The preparation process of the high barrier film is the same as in Example 1.

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Abstract

The invention relates to a high-barrier thin film modified by a nano rare earth nucleating agent. The thin film comprises a surface layer 1, a core layer and a surface layer 2 and is characterized in that the surface layer 1 contains 10-30 percent of MXD6, 63-84.9 percent of PA6, 2-4 percent of anti-sticking master batch, 3-8 percent of a compatilizer and 0.1-5 percent of the nano rare earth nucleating agent; the core layer contains 95-99.9 percent of MXD6 and 0.1-5 percent of the nano rare earth nucleating agent; the surface layer 2 contains 10-30 percent of MXD6, 63-84.9 percent of PA6, 2-4 percent of anti-sticking master batch, 3-8 percent of the compatilizer and 0.1-5 percent of the nano rare earth nucleating agent. The tensile strength and the haze of the modified high-barrier film are better improved.

Description

technical field [0001] The invention belongs to the field of biaxially stretched films, in particular to the field of barrier films. Background technique [0002] MXD6 is an aromatic polyamide resin with excellent barrier properties. The barrier properties are less affected by ambient humidity and recover quickly after cooking. Biaxially oriented nylon film is a common packaging material currently on the market. It has high mechanical strength and excellent printing performance. It is called the "queen" in the field of packaging materials and is a medium barrier material. With the continuous improvement of people's packaging requirements and the continuous reduction of the addition of preservatives, etc., the requirements for the barrier properties of films are getting higher and higher. It has been reported that PA6 is modified by MXD6, and then biaxially stretched to obtain high-barrier nylon film products. However, there are many problems in the performance of PA6 modif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/18B32B27/34C08L77/02C08L77/06C08L51/08C08K3/22C08K5/098
CPCB32B27/06B32B27/18B32B27/34B32B33/00B32B2307/50C08K3/22C08K5/098C08L51/08C08L77/02C08L77/06
Inventor 林凤龙赵黎
Owner 厦门长塑实业有限公司
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