Bio-based polyethylene/starch blending modified film blowing material and preparation method thereof

A blending modification and bio-based technology, which is applied in the field of bio-based polyethylene/starch blended modified blown film materials and its preparation, can solve the problem of mechanical performance degradation, low bio-based content of starch/polyethylene plastic materials, unfavorable Problems such as popularization and application, to achieve the effect of lowering melt index, improving production performance and reducing pollution

Active Publication Date: 2020-04-21
SHENZHEN HONGCAI NEW MATERIAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are certain defects in the above-mentioned patented technical method, which are mainly manifested in the low bio-based content of the prepared starch / polyethylene plastic material, and when the starch content in the starch / polyethylene plastic material increases slightly, the mechanical properties of the system will decrease significantly , which is not conducive to the promotion and application of the current industry

Method used

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  • Bio-based polyethylene/starch blending modified film blowing material and preparation method thereof
  • Bio-based polyethylene/starch blending modified film blowing material and preparation method thereof
  • Bio-based polyethylene/starch blending modified film blowing material and preparation method thereof

Examples

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Effect test

Embodiment 1-5

[0030] Example 1-5 Components and preparation of polyethylene / thermoplastic starch blending modified blown film material

[0031] Examples 1-5, the components of polyethylene / thermoplastic starch blended modified blown film material are shown in the following table.

[0032] Table 1

[0033]

[0034]

[0035] Embodiment 1-5, the preparation method of polyethylene / thermoplastic starch blending modified blown film material, the steps are as follows:

[0036] S1. First add starch into the reaction kettle, set the temperature to 150°C, turn on the stirring shaft, rotate speed 800rpm / min, and time 30min, so that the starch moisture is controlled within 0.5%, and then add plasticizer through the solid feeding port at the upper end of the reaction kettle , the accelerator continues to mix for 25min to obtain thermoplastic starch;

[0037]S2. Add bio-based low-density polyethylene, bio-based high-density polyethylene, and ethylene ethyl acrylate to the reaction kettle, mix for...

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PUM

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Abstract

The invention belongs to the field of plastic preparation, and particularly relates to a bio-based polyethylene / starch blending modified film blowing material and a preparation method thereof. The bio-based polyethylene / starch blending modified film blowing material comprises the following components in parts by weight: 25-45 parts of bio-based low-density polyethylene, 5-25 parts of bio-based high-density polyethylene, 4-20 parts of ethylene-ethyl acrylate, 1-8 parts of a compatilizer, 30-65 parts of starch, 3-19.5 parts of a plasticizer, 1-8 parts of a dispersing agent and 1-8 parts of an accelerant. The film blowing material provided by the invention has the advantages of high bio-based content, a low melt index, good processability and strong mechanical properties, and is beneficial for industrial popularization and utilization.

Description

technical field [0001] The invention belongs to the field of plastic preparation, in particular to a bio-based polyethylene / starch blended modified blown film material and a preparation method thereof. Background technique [0002] Influenced by environmental pollution and resource shortage, biodegradable polymer materials have become a research hotspot. As a green, renewable and biodegradable substance, starch is widely used in the preparation of biodegradable polymer materials. Natural starch granules are composed of the double helical structure of amylose and amylopectin, which have crystalline regions and non-crystalline regions. Due to the existence of crystalline regions in the granules, natural starch does not have thermoplastic processing properties, so it will generally be modified. This kind of starch has thermoplasticity and is called thermoplastic starch. [0003] The disadvantage of thermoplastic starch used to prepare biodegradable materials is that the polyh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L23/06C08L23/08C08L51/06C08L91/00C08L23/30C08L71/02C08K5/11C08K5/098C08K5/47C08K5/40C08J5/18
CPCC08J5/18C08J2303/02C08J2423/06C08J2423/08C08J2423/30C08J2451/06C08J2471/02C08J2491/00C08K5/098C08K5/11C08K5/40C08K5/47
Inventor 李积迁陈晓江郭健杨宏李建平
Owner SHENZHEN HONGCAI NEW MATERIAL TECH
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