Preparation method of corn starch biodegradable plastic

A technology for biodegrading plastics and corn starch, applied in the field of plastic processing, can solve the problems of high cost, unfavorable industrial promotion, complex production process, etc., and achieve the effects of less harm to the environment, simple processing technology, and reduced production cost.

Inactive Publication Date: 2013-06-12
太仓协乐高分子材料有限公司
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production process of traditional degradable plastic products is c...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Put cornstarch in a closed container and gradually heat up to 160°C at a heating rate of 5°C per minute and keep it warm for 0.7 hours to obtain a transparent cornstarch melt;

[0014] (2) Add the cornstarch melt, water and phthalate into an electromagnetic oscillator for mixing, the oscillation frequency of the electromagnetic oscillator is 10Hz, and then add them into a single-screw extruder for plasticizing and extruding Granulation, secondary processing to obtain corn starch biodegradable plastics.

Embodiment 2

[0016] (1) Put the cornstarch in an airtight container and gradually raise the temperature to 180°C at a rate of 5°C per minute and keep it warm for 0.5 hours to obtain a transparent cornstarch melt;

[0017] (2) Add the cornstarch melt, water and phthalate into an electromagnetic oscillator for mixing, the oscillation frequency of the electromagnetic oscillator is 7Hz, and then add them to a single-screw extruder for plasticizing and extruding Granulation, secondary processing to obtain corn starch biodegradable plastics.

Embodiment 3

[0019] (1) Put the cornstarch in an airtight container and gradually heat up to 170°C at a heating rate of 5°C per minute and keep it warm for 1 hour to obtain a transparent cornstarch melt;

[0020] (2) Add the cornstarch melt, water and phthalate into an electromagnetic oscillator for mixing, the oscillation frequency of the electromagnetic oscillator is 8Hz, and then add them into a single-screw extruder for plasticizing and extruding Granulation, secondary processing to obtain corn starch biodegradable plastics.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of corn starch biodegradable plastic, comprising the following steps of: placing corn starch in an airtight container, gradually heating to 160-180 DEG C, and insulating the heat for a certain time, thereby obtaining a transparent corn starch melt; and adding the corn starch melt, water and phthalic acid ester in an electromagnetic oscillator and mixing, then adding the raw materials in a single-screw extruder, plasticizing, extruding and granulating, and performing secondary processing, thereby obtaining the corn starch biodegradable plastic. Via the mode aforementioned, the preparation method of the corn starch biodegradable plastic provided by the invention is simple in processing technique, capable of greatly reducing production cost, and easy to industrially produce; the corn starch biodegradable plastic can be completely or partially degraded by micro-organisms in an environment, and the degradation products are low in harm to the environment; and the preparation method has a great industrial application prospect in the fields of packaging, food transport, agriculture, and the like.

Description

technical field [0001] The invention relates to the field of plastic processing, in particular to a preparation method of corn starch biodegradable plastics. Background technique [0002] The widespread use of plastic products has brought a lot of convenience and great wealth to people, but now plastic waste has also brought a lot of trouble to people and has become an important factor threatening the ecological environment. Plastic waste will remain in the soil in a large area, and long-term accumulation will cause soil compaction, which will affect the absorption of nutrients and water by crops, resulting in reduced crop production. Plastic waste discarded on land or in water bodies is swallowed by animals as food, causing animal death. Plastic waste is light in weight and bulky, and is generally disposed of by direct landfill, but it is difficult to degrade for a long time. Degradable plastic products have attracted attention because the degradation products are non-toxi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08L3/02C08K5/12C08J3/28
Inventor 石建国
Owner 太仓协乐高分子材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap