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Completely biodegradable plastic film prepared from straws and preparation method thereof

A biodegradable and plastic film technology is applied in the field of completely biodegradable plastic film prepared by using straw and its preparation field, which can solve the problem of high cost and achieve the effects of good mechanical properties, simple preparation process and easy industrial production.

Pending Publication Date: 2021-01-05
CHINA TIANYING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to solve the problem of high cost of the existing technology of using biodegradable polymers to prepare fully biodegradable materials, it is beneficial to provide a method for preparing fully biodegradable plastic films using straws.

Method used

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  • Completely biodegradable plastic film prepared from straws and preparation method thereof
  • Completely biodegradable plastic film prepared from straws and preparation method thereof
  • Completely biodegradable plastic film prepared from straws and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In this embodiment, the fully biodegradable plastic film comprises the following raw material compositions and parts by weight:

[0045]

[0046]

[0047] The preparation method of the above-mentioned biodegradable material comprises the following steps:

[0048] S1: The dried straw is crushed by ultra-fine crushing technology, and the particle size of the crushed straw is below 10 microns;

[0049] S2: The straw powder and the silane coupling agent were completely mixed and stirred at room temperature for 15 minutes to modify the surface of the straw powder;

[0050] S3: Mix the mixture in step S2 with other raw material components (biodegradable polymer, plasticizing modifier, film forming agent and nano-silver) in a high-speed mixer at 70 ° C for 15 minutes to obtain the prepared mix;

[0051] S4: Add the premix to the single-screw extruder to extrude the film, the extrusion temperature of the blown film is 170°C, and the screw speed is 60r / min;

[0052] S5:...

Embodiment 2

[0054] In this embodiment, the fully biodegradable plastic film comprises the following raw material compositions and parts by weight:

[0055]

[0056] The preparation method of the above-mentioned biodegradable material comprises the following steps:

[0057] S1: The dried straw is crushed by ultra-fine crushing technology, and the particle size of the crushed straw is below 10 microns;

[0058] S2: The straw powder and the silane coupling agent were completely mixed and stirred at room temperature for 15 minutes to modify the surface of the straw powder;

[0059] S3: Mix the mixture in step S2 with other raw material components (biodegradable polymer, plasticizing modifier, film forming agent and nano-silver) in a high-speed mixer at 70 ° C for 15 minutes to obtain the prepared mix;

[0060] S4: Add the premix to the single-screw extruder to extrude the film, the extrusion temperature of the blown film is 170°C, and the screw speed is 60r / min;

[0061] S5: A fully bio...

Embodiment 3

[0063] In this embodiment, the fully biodegradable plastic film comprises the following raw material compositions and parts by weight:

[0064]

[0065] The preparation method of the above-mentioned biodegradable material comprises the following steps:

[0066] S1: The dried straw is crushed by ultra-fine crushing technology, and the particle size of the crushed straw is below 10 microns;

[0067] S2: The straw powder and the silane coupling agent were completely mixed and stirred at room temperature for 15 minutes to modify the surface of the straw powder;

[0068]S3: Mix the mixture in step S2 with other raw material components (biodegradable polymer, plasticizing modifier, film-forming agent and nano-silver) in a high-speed mixer at 70° C. for 15 minutes to obtain the prepared mixture. mix;

[0069] S4: Add the premix to the single-screw extruder to extrude the film, the extrusion temperature of the blown film is 170°C, and the screw speed is 60r / min;

[0070] S5: A f...

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Abstract

The invention discloses a completely biodegradable plastic film prepared from straws and a preparation method of the completely biodegradable plastic film, relates to the technical field of resource utilization of straws in agricultural wastes, and solves the problem of relatively high technical cost of preparing a completely biodegradable material by utilizing a biodegradable polymer in the priorart. The biodegradable plastic is prepared from the following raw materials in parts by weight: 50-90 parts of a biodegradable polymer, 10-40 parts of straws, 0.5-2 part of a surface modifier, 5-10 parts of a plasticizing modifier, 5-10 parts of a film-forming agent and 0.2-1 part of nano-silver. According to the method for preparing the completely biodegradable material by replacing part of thebiodegradable polymer with the straw, the technical raw material cost is effectively reduced, and the effects of resource saving, environmental protection, wide raw material source, simple process, easiness in industrialization and the like are achieved.

Description

technical field [0001] The invention relates to the technical field of straw resource utilization in agricultural waste, in particular to a fully biodegradable plastic film prepared from straw and a preparation method thereof. Background technique [0002] With the increasing awareness of environmental protection in society, people gradually realize the adverse effects of non-degradable plastic films and non-completely degradable plastic films on the ecological environment. Society as a whole is increasingly demanding fully degradable plastic films. Biodegradable polymers are good raw materials for preparing fully biodegradable plastic films, but their industrialization development is limited due to their high cost. [0003] The crop straw produced in my country is close to one billion tons every year, but about half of the straw cannot be effectively utilized as a resource. The main components of straw are cellulose and lignin, which have high strength and good toughness. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L67/04C08L67/02C08L97/02C08K13/02C08K3/08C08K5/54C08K5/053C08K5/06C08J5/18
CPCC08J5/18C08J2367/04C08J2329/04C08J2367/02C08J2497/02C08K13/02C08K5/54C08K5/053C08K5/06C08K2003/0806C08K2201/011
Inventor 蒋丹韩丹李军曹德标茅洪菊
Owner CHINA TIANYING
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