Granular full-degradable environment-friendly starch and modified starch master batch and production method thereof

A modified starch and production method technology, applied in the field of material processing, can solve the problems of hidden dangers of hygiene, inconvenient and accurate measurement, etc., and achieve the effects of improving efficiency, simplifying operation and prolonging residence time

Pending Publication Date: 2020-05-05
杭实科技发展(杭州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the above problems, provide granular fully degradable environmentally friendly starch and modified starch

Method used

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  • Granular full-degradable environment-friendly starch and modified starch master batch and production method thereof
  • Granular full-degradable environment-friendly starch and modified starch master batch and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Put 2kg of glycerin and 8kg of denatured starch into a high-speed mixer and mix thoroughly, then put the mixture into a twin-screw extruder, set the temperature of the twin-screw to 50-160°C, and the speed of the main engine to 200rpm. After extrusion, the material enters a 1m-long Air-cooled towline, then pelletized and packaged to obtain modified starch masterbatch A.

[0026] Put 3kg of modified starch masterbatch A, 6kg of polybutylene adipate terephthalate (PBAT) and 1kg of erucamide into a high-speed mixer and mix them thoroughly, then add the mixture into a twin-screw extruder, set The twin-screw temperature is set at 50-170°C, the host speed is 150rpm, and the material is extruded, pelletized, and packaged to obtain the modified masterbatch B.

Embodiment 2

[0028] Put 2kg of sorbitol and 10kg of starch into a high-speed mixer and mix thoroughly, then put the mixture into a twin-screw extruder, set the temperature of the twin-screw to 50-160°C, and the speed of the main engine to 200rpm. After extrusion, the material enters a 1.2m long Air-cooled towline, then pelletized and packaged to obtain starch masterbatch A.

[0029] 3kg starch masterbatch A, 6kg polybutylene adipate terephthalate (PBAT) and 1kg polyester chain extender are put into high-speed mixer and fully stirred and mixed, then the mixture is added in the twin-screw extruder, Set the temperature of the twin-screw to 50-170°C, and the speed of the host to 150rpm. The material is extruded, pelletized, and packaged to obtain the modified masterbatch B.

Embodiment 3

[0031] Put 2kg of urea and 18kg of starch into a high-speed mixer and mix thoroughly, then put the mixture into a twin-screw extruder, set the temperature of the twin-screw to 50-160°C, and the speed of the main engine to 200rpm. After extrusion, the material enters a 0.8m long Air-cooled towline, then pelletized and packaged to obtain starch masterbatch A.

[0032] Put 3kg of starch masterbatch A, 6kg of polybutylene adipate terephthalate (PBAT) and 1kg of additives into a high-speed mixer to fully stir and mix. The additives are glycerin, erucamide, polyester chain extension The mixture is composed of 1:2:1 mass ratio, and then the mixture is added into the twin-screw extruder, the twin-screw temperature is set at 50-170°C, the host speed is 150rpm, and the material is extruded, pelletized, and packaged to obtain Modified masterbatch B.

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Abstract

The invention provides a production method of granular fully-degradable environment-friendly starch and modified starch master batch. The method comprises the following steps: mixing a plasticizer andstarch/modified starch in a mass ratio of 1:(1-9), and carrying out extrusion granulation to obtain master batch A; and mixing the obtained master batch A with PBAT and an auxiliary agent, carrying out extrusion granulation, and performing packaging to obtain the master batch B. The invention also provides granular full-degradable environment-friendly starch and modified starch master batch. Thegranular full-degradable environment-friendly starch and modified starch master batch comprises the master batch B prepared by the production method of the granular full-degradable environment-friendly starch or modified starch master batch. The formula is simple, the content of starch or modified starch is high, flexible use of downstream customers is not affected, and the obtained product can becompletely biodegraded and is environmentally friendly.

Description

technical field [0001] The application belongs to the field of material processing, and relates to a starch masterbatch and a production method thereof, in particular, to a granular fully degradable environmentally friendly starch and a modified starch masterbatch and a production method thereof. Background technique [0002] Starch is a plant-derived, renewable, fully degradable, and inexpensive natural polymer material that exists in the form of granules in plant seeds such as corn, wheat, potato, cassava, and pea. Under the current environmental protection policies of "plastic restriction" and "plastic ban" at home and abroad, starch is considered to be an environmentally friendly material with great application prospects. And intramolecular hydrogen bonds, making its melting temperature higher than the decomposition temperature, therefore, the traditional polymer material processing method is not suitable for starch processing. Then, the modified starch produced by redu...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L3/02C08K5/053C08K5/1545C08K5/21C08K5/20C08J3/22C08J5/18B29B9/06B29C48/40B29C48/625
CPCB29B9/06B29C48/40B29C48/625C08J3/226C08J5/18C08J2367/02C08J2403/02C08K5/053C08K5/1545C08K5/20C08K5/21
Inventor 金泽枫许洪根刘岗姚向荣赵文彦范俊朱休临
Owner 杭实科技发展(杭州)有限公司
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