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A kind of pet/pe alloy sheet and preparation method thereof

A technology of alloy sheet and compatibilizer, which is applied in the field of material processing, can solve the problems that the mechanical properties of PET/PE sheet products are difficult to achieve and obtain, and achieve the effect of being suitable for large-scale production, low cost and simple process

Active Publication Date: 2021-02-05
SHENZHEN LUHUAN REGENERATION RESOURCE DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the related technology, it is difficult to process PET / PE homogeneous alloy materials by recycling PET and PE raw materials, especially it is difficult to obtain PET / PE homogeneous alloy sheets, and the mechanical properties of the obtained PET / PE sheet products are difficult to reach those of conventional polymers. sheet level

Method used

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  • A kind of pet/pe alloy sheet and preparation method thereof
  • A kind of pet/pe alloy sheet and preparation method thereof

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preparation example Construction

[0059] The above-mentioned preparation method of a PET / PE alloy sheet comprises blending PET, PE and a compatibilizer in proportion, melt extruding, and roll forming to obtain a PET / PE alloy sheet.

[0060] The preparation method of the PET / PE alloy sheet of the invention has simple process, does not need to dry the PET material, has low cost, and is suitable for large-scale production.

[0061] In a preferred embodiment of the present invention, the stirring speed of the blending is 190-210 r / min, preferably 200 r / min.

[0062] In a preferred embodiment of the present invention, the blending time is 4-6 minutes, preferably 5 minutes.

[0063] Adopting a specific blending speed and time can help promote the full and uniform mixing of PET, PE and compatibilizer, promote the compatibility of PET and PE in the subsequent melt extrusion process, and further improve the mechanical properties of the obtained PET / PE alloy sheet.

[0064] The present invention has no special requirem...

Embodiment 1

[0075] A preparation method of a PET / PE alloy sheet, comprising the steps of:

[0076] (1) Take 70 parts of commercially available PET (manufactured by Hainan Yisheng Petrochemical Co., Ltd.), 10 parts of commercially available LLDPE (the brand is JL210, produced by South Korea SK Group) and 1 part of commercially available MAH in terms of parts by mass. Branch EVA compatibilizer (manufacturer is Nanjing Sutai Polymer Technology Co., Ltd.);

[0077] (2) Pass PET, PE and compatibilizer through a high-speed mixer, and stir and mix for 6 minutes at room temperature at a speed of 190r / min;

[0078] (3) Melting and extruding the mixture obtained in step (2) through a twin-screw extruder, wherein the barrel temperature is 180°C, 210°C, 240°C, 260°C, 260°C, and the die head temperature is 260°C;

[0079] (4) The PET / PE alloy sheet is obtained by roll forming with a three-roll calender at a traction speed of 10 mm / min.

Embodiment 2

[0081] A preparation method of a PET / PE alloy sheet, comprising the steps of:

[0082] (1) Take 90 parts of commercially available PET (manufactured by Hainan Yisheng Petrochemical Co., Ltd.), 30 parts of commercially available HDPE (the brand is 5000S, produced by China National Petroleum Corporation) and 5 parts of commercially available PET in terms of mass parts. Sell ​​GMA grafted POE compatibilizer (manufactured by Suzhou Yasai Plastic Chemical Co., Ltd.);

[0083] (2) Pass PET, PE and compatibilizer through high-speed mixer, at room temperature, under the rotating speed of 210r / min, stir and mix 4;

[0084] (3) Melting and extruding the mixture obtained in step (2) through a twin-screw extruder, wherein the barrel temperature is 190°C, 230°C, 260°C, 270°C, 270°C, and the die head temperature is 270°C;

[0085] (4) The PET / PE alloy sheet is obtained by roll forming with a three-roll calender at a traction speed of 30 mm / min.

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Abstract

The invention provides a PET / PE alloy sheet and a preparation method thereof. The PET / PE alloy sheet of the invention is mainly prepared from PET, PE and a compatibilizer in a specific dosage ratio. PET and PE can be uniformly compatible, and the appearance Beautiful, with excellent mechanical properties, can be used for further processing. The preparation method of the PET / PE alloy sheet of the invention has simple process, does not need to dry the PET material, has low cost, and is suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of material processing, in particular to a PET / PE alloy sheet and a preparation method thereof. Background technique [0002] Plastic packaging sheets are mainly used to produce thermoformed products such as disposable plastic cups, plates, bowls, plates, boxes, etc., and are widely used in the packaging of food, vegetables, fruits, beverages, dairy products, industrial parts, etc. With the increasing domestic demand, the use of packaging plastic thermoforming sheets is becoming more and more extensive, and the consumption is also increasing year by year. The prospect is promising. The common method of producing plastic packaging sheets is the calendering method, which is mainly used to produce PVC, PP, ABS and other sheets; the other is the extrusion method, which is used to produce BOPS, EPS, PET, HIPS and other sheets. Sales of these two products in the food packaging market are expected to grow at a CAG...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L23/06C08L51/06B29D7/01
CPCB29D7/01C08L67/02C08L2205/03C08L2205/08C08L2207/062C08L23/06C08L51/06
Inventor 朱道峰
Owner SHENZHEN LUHUAN REGENERATION RESOURCE DEV CO LTD
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