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A kind of composite modified starch-based environmental protection material, preparation method and application

An environmentally friendly material and composite modification technology, which is applied in the field of preparation and composite modified starch-based environmental protection materials, can solve the problems of potential hazards to the human body, excessive addition of plastic starch, and reduced service life, so as to avoid adverse effects and reduce particulate matter. , the effect of reducing pollution

Active Publication Date: 2022-04-26
北京禾易和科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN 104974478 A discloses a degradable plastic and its production process. The components of the degradable plastic are PBAT, corn starch, nano talcum powder, modified calcium carbonate, compatibilizer, plasticizer, calcium stearate, antioxidant , by adding modified calcium carbonate to increase the degradation rate; this patent uses plasticizers in the production, if used improperly, there will be potential harm to the human body, which limits its edible use in the field of food packaging
Patent CN 101870774 A provides a bio-starch degradable plastic masterbatch, which is composed of refined starch, toughening agent, initiator, modifier, plasticizer, and lubricating processing aid. Starch increases the degradability; however, if the plastic starch is added too much, in actual use, the product may fail due to poor mechanical properties and reduce the service life

Method used

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  • A kind of composite modified starch-based environmental protection material, preparation method and application
  • A kind of composite modified starch-based environmental protection material, preparation method and application
  • A kind of composite modified starch-based environmental protection material, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The preparation method of the composite modified starch-based environmental protection material adopts the extrusion molding process and is prepared by the following method:

[0063] X1 Take 40 parts of porous short-chain starch, 60 parts of degradable resin, 1.2 parts of heat stabilizer, 1.8 parts of dispersant, dry at 60°C for 8 hours, cool down to room temperature, and obtain dry raw materials for later use;

[0064] X2 Put the dry raw materials into the mixer and heat and mix for 10 minutes. The temperature is controlled at 140°C and the stirring speed is 450r / min to obtain a homogeneous material and set aside;

[0065] X3 Put the mixed material into the twin-screw extruder to melt and blend, and extrude to obtain nano-antibacterial composite plastic masterbatch. °C, 190 °C, 185 °C, 180 °C; the screw speed is 75 rpm, cooled to room temperature, and the material is obtained and set aside;

[0066] X4 The material is cut into pellets by a pelletizer to obtain a compo...

Embodiment 2

[0082] The preparation method of the composite modified starch-based environmental protection material adopts the extrusion molding process and is prepared by the following method:

[0083] X1 Take 40 parts of porous short-chain starch, 60 parts of degradable resin, 1.2 parts of heat stabilizer, 1.8 parts of dispersant, dry at 60°C for 8 hours, cool down to room temperature, and obtain dry raw materials for later use;

[0084] X2 Put the dry raw materials into the mixer and heat and mix for 10 minutes. The temperature is controlled at 140°C and the stirring speed is 450r / min to obtain a homogeneous material and set aside;

[0085] X3 Put the mixed material into the twin-screw extruder to melt and blend, and extrude to obtain nano-antibacterial composite plastic masterbatch. °C, 190 °C, 185 °C, 180 °C; the screw speed is 75 rpm, cooled to room temperature, and the material is obtained and set aside;

[0086] X4 The material is cut into pellets by a pelletizer to obtain a compo...

Embodiment 3

[0102] The preparation method of the composite modified starch-based environmental protection material adopts the extrusion molding process and is prepared by the following method:

[0103] X1 Take 40 parts of porous short-chain starch, 60 parts of degradable resin, 1.2 parts of heat stabilizer, 1.8 parts of dispersant, dry at 60°C for 8 hours, cool down to room temperature, and obtain dry raw materials for later use;

[0104] X2 Put the dry raw materials into the mixer and heat and mix for 10 minutes. The temperature is controlled at 140°C and the stirring speed is 450r / min to obtain a homogeneous material and set aside;

[0105] X3 Put the mixed material into the twin-screw extruder to melt and blend, and extrude to obtain nano-antibacterial composite plastic masterbatch. °C, 190 °C, 185 °C, 180 °C; the screw speed is 75 rpm, cooled to room temperature, and the material is obtained and set aside;

[0106] X4 The material is cut into pellets by a pelletizer to obtain a compo...

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Abstract

The invention discloses a composite modified starch-based environmental protection material, which comprises the following raw materials in parts by weight: 40-60 parts of porous short-chain starch, polylactic acid (PLA) or polybutylene succinate (PBS) or polyhexamethylene Diacid / butylene terephthalate (PBAT) 60~80 parts, heat stabilizer 1~2 parts, dispersant 1~3 parts. The invention prepares a porous short-chain starch, and the environmental protection material prepared from the above raw materials has good mechanical properties and antibacterial effect, and can be used in the fields of degradable handbags and degradable garbage bags. At the same time, the environmentally friendly material has excellent degradation performance, and even if it is treated by waste incineration, it will not produce a large amount of inhalable particles, which is green and environmentally friendly, and is conducive to sustainable development strategies.

Description

technical field [0001] The invention relates to the technical field of degradable plastics, in particular to a composite modified starch-based environmental protection material, a preparation method and an application. Background technique [0002] The biodegradation of plastics means that microorganisms metabolize plastics into easily degradable compounds or humus substances that are less harmful to the environment. They are composed of biodegradable plastics, mainly from renewable raw materials or petroleum-based plastics with additives. Biodegradable plastics made from renewable resources reduce dependence on petroleum and reduce the amount of waste. In recent years, special attention has been paid to developing biodegradable polymers from renewable resources, especially for packaging and single-use applications, in order to remain economically and ecologically sustainable for a greener effect. Among these biopolymers, starch is an inexpensive biopolymer that is complet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L3/08C08K3/28C08K3/08
CPCC08L67/04C08L2201/06C08K2003/0806C08L3/08C08K3/28C08K3/08
Inventor 林梦真
Owner 北京禾易和科技有限公司
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