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High-barrier PET material and preparation method thereof

A high-barrier, nano-inorganic filler technology, applied in the field of polymer materials, can solve the problems of poor barrier properties of PET, achieve the effects of weakening loosening and plasticizing, improving water absorption, excellent barrier properties and mechanical properties

Inactive Publication Date: 2019-03-15
CHANGZHOU RUIJIE NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of poor PET barrier properties in the prior art, and provide a high barrier PET material and its preparation method

Method used

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  • High-barrier PET material and preparation method thereof
  • High-barrier PET material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A high barrier PET material, including the following components: PET resin 74.5%, PEN resin 10%, HDPE resin 7%, modified halloysite 1%, nano silicon dioxide 1%, nano alumina 0.98%, nano nitrogen Titanium oxide 0.02%, antioxidant 0.5%, dispersant 1%, compatibilizer 4%.

[0047] The modified halloysite in this example is modified by aluminate coupling agent. The specific modification step is to stir the dried halloysite at 100°C and 500rpm for 5min; then slowly add aluminate Ester coupling agent (use diethyl ether diluent), maintain the temperature at 110°C, and continue to stir for 30 minutes.

[0048] The preparation method of the high-barrier PET material is to mix the antioxidant and the dispersant uniformly in proportion to obtain a mixed powder; the above-mentioned nano-silica with a particle size of 150nm, nano-alumina with a particle size of 150nm, and nano-nitrided 150nm Stir and mix the titanium and the above-mentioned modified halloysite evenly under the condi...

Embodiment 2

[0050] A high-barrier PET material, including the following components: PET resin 74.5%, PEN resin 10%, HDPE resin 7%, modified montmorillonite 1%, nano-silica 1%, nano-alumina 0.98%, nano-nitrogen Titanium oxide 0.02%, antioxidant 0.5%, dispersant 1%, compatibilizer 4%.

[0051] The modified montmorillonite in this example is obtained by modifying the montmorillonite through p-aminobenzoic acid hydrochloride. The specific steps are heating the dried montmorillonite to 60° C. and stirring at 500 rpm for 2 hours; Add p-aminobenzoic acid hydrochloride, maintain the temperature at 60°C and continue stirring for 16 hours; wash with water until the washing water does not contain chloride ions; then wash with absolute ethanol and dry.

[0052] The preparation method of the high-barrier PET material is to mix the antioxidant and the dispersant uniformly in proportion to obtain a mixed powder; the above-mentioned nano-silica with a particle size of 150nm, nano-alumina with a particle ...

Embodiment 3

[0054] A high barrier PET material, including the following components: PET resin 80%, PEN resin 7%, HDPE resin 5%, modified montmorillonite 2%, modified halloysite 2%, nano silicon dioxide 0.98%, Nano titanium nitride 0.02%, antioxidant 0.5%, dispersant 1%, compatibilizer 1.5%.

[0055] In this example, the modified halloysite is modified by an aluminate coupling agent, and the specific steps are the same as in Example 1.

[0056] The modified montmorillonite in this example is obtained by modifying the montmorillonite with p-aminobenzoic acid hydrochloride, and the specific steps are the same as in Example 2.

[0057] The preparation method of the high-barrier PET material is to mix the antioxidant and the dispersant uniformly in proportion to obtain a mixed powder; mix the above-mentioned nano-silicon dioxide with a particle size of 150nm, nano-titanium nitride with a particle size of 150nm and the above-mentioned modified Mongolian powder. The desoiling and modified halloys...

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Abstract

The invention relates to the technical field of polymer materials, in particular to a high-barrier PET material and a preparation method thereof. The high-barrier PET material is prepared from components in percentage by weight as follows: 65%-80% of PET resin, 5%-20% of PEN resin, 5%-15% of HDPE resin, 0.1%-5% of modified barrier filler, 0.1%-5% of nano inorganic filler, 0.3%-1% of an antioxidant, 1%-2% of a dispersant and 2%-6% of a compatilizer. The preparation method comprises the following steps: (1) raw material preparation; (2) mixing; (3) melt extrusion and granulation. The prepared high-barrier PET material gives consideration to balance of barrier property and mechanical property while having better oxygen blocking capacity and gas barrier property, the preparation process is simple and applicable to practical use, and large-scale production is easy.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-barrier PET material and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (poly(ethylene terephthalate)), referred to as PET, is a thermoplastic semi-crystalline polymer material. It has high heat resistance, high transparency, high gas barrier properties, good chemical resistance and insulation properties, and is widely used in fibers, biaxially oriented films, polyester bottles and various packaging containers. In today's engineering plastics market, PET has a tendency to replace PBT due to its excellent cost performance. In the field of packaging materials, especially in the field of bottle packaging materials, PET is developing rapidly. [0003] PET itself has good characteristics: such as crystallization performance, strength and rigidity, and high barrier performance, especially for non-polar gases, and its creep resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/06C08K9/04C08K3/34C08K3/36C08K3/28C08K3/22
CPCC08K2003/2227C08K2201/011C08L67/02C08L2201/14C08L2205/025C08L2207/062C08L23/06C08K9/04C08K3/34C08K3/346C08K3/36C08K3/28C08K3/22
Inventor 王卫红潘凯李军苑红亮吴杰
Owner CHANGZHOU RUIJIE NEW MATERIAL TECH CO LTD
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