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Starch-based fully-degradable PBAT master batch capable of being mixed for use as well as preparation method and application thereof

A starch-based, fully degradable technology, applied in the field of degradable polymer materials, can solve the problems of insufficient yield strength and sealing strength of PBAT, and achieve the effects of low comprehensive cost, reduced processing cost and low price.

Pending Publication Date: 2021-11-26
JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of insufficient yield strength, tensile strength and sealing strength of PBAT materials in the prior art, and provide a starch-based fully degradable PBAT masterbatch that can be mixed and used, and its preparation method and application

Method used

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  • Starch-based fully-degradable PBAT master batch capable of being mixed for use as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A fully degradable starch-based PBAT masterbatch that can be mixed and used, comprising 42% starch, 9% glycerin, 44.3% PBAT, 1.5% heat stabilizer, 0.6% lubricant, 2% auxiliary plasticizer, anti Oxygen agent 0.3%, chain extender 0.3%.

[0051] According to the following method, the starch-based fully degradable PBAT masterbatch that can be mixed and used is obtained, and the specific steps are as follows: (1) starch

[0052]Pour the powder into the high mixer, add glycerin at a speed of 200r / min, continue to stir for 2min, and stop stirring;

[0053] (2) Add PBAT and heat stabilizer, lubricant, auxiliary plasticizer, antioxidant, chain extender and other additives, and stir at 450r / min for 2min;

[0054] (3) Extrude and granulate the mixture obtained above through a twin-screw extruder at an extrusion temperature of 130° C. to obtain starch-based fully degradable PBAT masterbatch granules.

[0055] Prepare the modified starch-based PBAT biodegradable film material with...

Embodiment 2

[0059] A fully degradable starch-based PBAT masterbatch that can be mixed and used, comprising 36% starch, 7% glycerin, 53.3% PBAT, 1.5% heat stabilizer, 0.6% lubricant, 2% auxiliary plasticizer, anti Oxygen agent 0.3%, chain extender 0.3%.

[0060] According to the following method, the starch-based fully degradable PBAT masterbatch that can be mixed and used is obtained, and the specific steps are as follows: (1) starch

[0061] Pour the powder into the high mixer, add glycerin at a speed of 200r / min, continue to stir for 2min, and stop stirring;

[0062] (2) Add PBAT and heat stabilizer, lubricant, auxiliary plasticizer, antioxidant, chain extender and other additives, and stir at 450r / min for 2min;

[0063] (3) Extrude and granulate the mixture obtained above through a twin-screw extruder at an extrusion temperature of 130° C. to obtain starch-based fully degradable PBAT masterbatch granules.

[0064] Prepare the modified starch-based PBAT biodegradable film material wit...

Embodiment 3

[0068] A fully degradable starch-based PBAT masterbatch that can be mixed and used, comprising 32% starch, 6% glycerin, 57.3% PBAT, 1.5% heat stabilizer, 0.6% lubricant, 2% auxiliary plasticizer, anti Oxygen agent 0.3%, chain extender 0.3%. According to the following method, the starch-based fully degradable PBAT masterbatch that can be mixed and used is obtained, and the specific steps are as follows: (1) starch

[0069] Pour the powder into the high mixer, add glycerin at a speed of 200r / min, continue to stir for 2min, and stop stirring;

[0070] (2) Add PBAT and heat stabilizer, lubricant, auxiliary plasticizer, antioxidant, chain extender and other additives, and stir at 450r / min for 2min;

[0071] (3) Extrude and granulate the mixture obtained above through a twin-screw extruder at an extrusion temperature of 130° C. to obtain starch-based fully degradable PBAT masterbatch granules.

[0072] Prepare the modified starch-based PBAT biodegradable film material with the obt...

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Abstract

The invention discloses a starch-based fully-degradable PBAT master batch capable of being mixed for use and a preparation method and an application thereof. The starch-based fully-degradable PBAT master batch comprises the following components in percentage by mass: 30-50% of starch, 5-15% of glycerol, 40-60% of PBAT, 1-5% of a heat stabilizer, 0.1-1% of a lubricant, 1-5% of an auxiliary plasticizer, 0.1-0.5% of an antioxidant and 0.1-0.5% of a chain extender. The starch is plasticized by adding glycerol, an auxiliary plasticizer and the like, so that the starch has the possibility of thermoplastic processing; the bio-based material starch is introduced on the basis of the whole bio-based biodegradable material PBAT, the requirement of complete degradation is met after composite modification, meanwhile, the mechanical property of the bio-based PBAT resin is enhanced, and the cost is reduced; the starch-based fully-degradable PBAT master batch prepared by the invention can be mixed with a PBAT raw material and diluted for direct film blowing use, and extrusion secondary granulation is not needed, so that the processing cost of the plastic can be effectively reduced, the comprehensive cost of the plastic is low, and the product is more beneficial to market promotion.

Description

technical field [0001] The invention belongs to the field of degradable polymer materials, and in particular relates to a starch-based fully degradable PBAT masterbatch capable of being mixed and used, and a preparation method and application thereof. Background technique [0002] With the continuous development of the national economy, the consumption of plastic products is increasing, and synthetic plastics are playing an increasingly important role in production and life. However, since most of the plastic products cannot be degraded after being discarded, they exist for a long time, and the continuous accumulation has caused serious white pollution. Environmentally friendly plastic products are becoming more and more urgent and have aroused extensive interest of researchers. Among them, degradable resins have become a research hotspot due to their degradation characteristics and economic characteristics. [0003] Polybutylene terephthalate / adipate (PBAT) is a completely...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L3/02C08L91/00C08K5/053C08K5/098C08K5/11C08J3/22C08J5/18
CPCC08J3/226C08J5/18C08J2367/02C08J2467/02C08J2403/02C08J2491/00C08K5/053C08K5/098C08K5/11
Inventor 蒋士鹏杨杰安峰庄吉彬刘曙光
Owner JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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