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A kind of preparation method of composite packaging material

A technology of composite packaging materials and molten mixtures, which is applied in the field of preparation of composite packaging materials, can solve the problems of poor fracture resistance, low elongation at break, shape change, etc., and achieve high temperature resistance and elongation at break Effect

Inactive Publication Date: 2016-11-30
青岛智开新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problems to be solved: Although conventional composite packaging materials are widely used, they still have certain shortcomings, such as poor high temperature resistance, shape changes at high temperatures, and low elongation at break. Poor fracture resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Take 9kg of polybutadiene, 8kg of acrylonitrile, and 7kg of polyprenol, heat polybutadiene, acrylonitrile, and polyprenol to melt, and carry out mechanical stirring until uniform, and the temperature is 170 ℃;

[0025] (2) Add 8 kg of polybutylene succinate, 2 kg of citric acid, and 8 kg of hexyl isobutyrate to the molten mixture of step (1), mix polybutylene succinate, citric acid 1. Hexyl isobutyrate and the molten mixture in step (1) are stirred at high temperature again, and the temperature is 190° C.;

[0026] (3) Extrude the molten mixture obtained in step (2) with a twin-screw extruder, the length-to-diameter ratio of the screws is 70:1, the first extrusion temperature is 170°C, and the second extrusion temperature is 190°C. The third extrusion temperature is 225°C;

[0027] (4) After the extrusion is completed, the extruded packaging material is calendered with a calender to compress it into a sheet;

[0028] (5) Heat-stretch the sheet-shaped packaging ma...

Embodiment 2

[0032] (1) Take 13kg of polybutadiene, 6kg of acrylonitrile, and 5kg of polyprenol, heat the polybutadiene, acrylonitrile, and polyprenol to melt, and carry out mechanical stirring until uniform, the temperature is 165 ℃;

[0033] (2) Add 4 kg of polybutylene succinate, 2 kg of citric acid, and 14 kg of hexyl isobutyrate to the molten mixture of step (1), and mix polybutylene succinate, citric acid 1. Hexyl isobutyrate and the molten mixture in step (1) are stirred at high temperature again, and the temperature is 195° C.;

[0034] (3) Extrude the molten mixture obtained in step (2) with a twin-screw extruder, the length-to-diameter ratio of the screws is 60:1, the first extrusion temperature is 180°C, and the second extrusion temperature is 195°C. The third extrusion temperature is 220°C;

[0035] (4) After the extrusion is completed, the extruded packaging material is calendered with a calender to compress it into a sheet;

[0036] (5) heat-stretch the sheet-shaped packag...

Embodiment 3

[0040] (1) Take 15kg of polybutadiene, 7kg of acrylonitrile, and 9kg of polyprenol, heat the polybutadiene, acrylonitrile, and polyprenol to melt, and carry out mechanical stirring until uniform, and the temperature is 170 ℃;

[0041] (2) Add 6 kg of polybutylene succinate, 1 kg of citric acid, and 11 kg of hexyl isobutyrate to the molten mixture in step (1), and mix polybutylene succinate, citric acid 1. Hexyl isobutyrate and the molten mixture in step (1) are stirred at high temperature again, and the temperature is 200° C.;

[0042] (3) Extrude the molten mixture obtained in step (2) with a twin-screw extruder, the length-to-diameter ratio of the screws is 70:1, the first extrusion temperature is 185°C, and the second extrusion temperature is 205°C. The third extrusion temperature is 225°C;

[0043] (4) After the extrusion is completed, the extruded packaging material is calendered with a calender to compress it into a sheet;

[0044] (5) Heat-stretch the sheet-shaped pa...

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Abstract

The present invention relates to a preparation method of a composite packaging material. The preparation method of the composite packaging material comprises the following steps: (1) taking polybutadiene, acrylonitrile and polyprenol, and mixing polybutadiene, acrylonitrile , Polypentenol is heated to melt, and mechanically stirred until uniform; (2) Add polybutylene succinate, citric acid, and hexyl isobutyrate to the molten mixture in step (1), and poly Butylene succinate, citric acid, hexyl isobutyrate and the molten mixture in step (1) are stirred at high temperature again; (3) The molten mixture obtained in step (2) is extruded with a twin-screw extruder (4) After the extrusion is completed, the extruded packaging material is calendered with a calender to be pressed into a sheet; (5) The sheet-shaped packaging material is subjected to thermal stretching treatment; (6) Cutting after stretching is the prepared composite packaging material.

Description

technical field [0001] The invention belongs to the field of polymer materials and relates to a preparation method of a composite packaging material. Background technique [0002] Packaging materials made of polyethylene, polypropylene, etc. are used very frequently and can be seen everywhere in life. These packaging materials prepared by conventional polymer materials have certain defects, such as their poor heat resistance, and they will be deformed under high temperature treatment. In addition to their poor high temperature resistance, their fracture resistance It is also poor, and it will break when subjected to a large external force. [0003] The existence of these problems requires us to conduct further in-depth research on packaging materials, and improve the high temperature resistance and fracture resistance of the prepared packaging materials by changing the preparation process and raw materials of the packaging materials. Contents of the invention [0004] Te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/00C08L67/02C08K5/092C08K5/101C08F291/08C08F220/44B29C47/00B29C43/24B29C55/02B29B7/00
Inventor 蔡洪波
Owner 青岛智开新材料有限公司
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