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Amylum category complete biodegradable material and preparation method thereof

A technology for biodegradable materials and starch, which is applied in the field of completely biodegradable starch materials and their preparation, can solve the problems that the comprehensive performance needs to be further improved, the dispersing effect and plasticizing effect of starch fillers are not ideal, and the like, and complete biodegradation is achieved. performance, excellent blow molding processability, and the effect of excellent mechanical properties

Inactive Publication Date: 2012-06-13
KINGFA SCI & TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the processing of the extruder, the dispersion effect and plasticization effect of the starch filler are not ideal, and the comprehensive performance of the product needs to be further improved.

Method used

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  • Amylum category complete biodegradable material and preparation method thereof
  • Amylum category complete biodegradable material and preparation method thereof
  • Amylum category complete biodegradable material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Weigh each component according to the following weight percentages:

[0046] Composition Proportion% PBSA 60 corn starch 20 glycerin 10 calcium carbonate 5 DOA 2 Toluene diisocyanate 1 1,4-phenyl-bis(2-oxawaline) 1.5 bisphenol A phosphite 0.1 dodecylthiopropyl ester 0.1 Oleamide 0.1 Ethylene bis stearamide 0.2

[0047] The preparation process is as follows:

[0048] Mix glycerin and DOA evenly and transfer to liquid metering pump;

[0049] Put PBSA, cornstarch, and calcium carbonate into the frequency conversion high-speed mixer according to the ratio and mix them evenly. At the same time, turn on the liquid metering pump to accurately measure and inject oil and mix for 135 seconds.

[0050] Use weighing scales to accurately measure and feed into the extruder;

[0051] The length-to-diameter ratio of the extruder is 56:1, and the main engine is designed with 4 exhaust ports;

[00...

Embodiment 2

[0058] Weigh each component according to the following weight percentages:

[0059] Composition Proportion% PCL 50 corn starch 30 glycerin 10 calcium carbonate 5 water 2 Toluene diisocyanate 1 Diglycidyl esters, bis(2-oxaline) 1.5 bisphenol A phosphite 0.1 dodecylthiopropyl ester 0.1 Oleamide 0.1 Ethylene bis stearamide 0.2

[0060] The preparation process is as follows:

[0061] Mix glycerin and water evenly and transfer to liquid metering pump;

[0062] Put PCL, cornstarch, and calcium carbonate into the frequency conversion high-speed mixer according to the ratio and mix evenly. At the same time, turn on the liquid metering pump to accurately measure and inject oil and mix for 135 seconds. After adding the additives, turn to high speed and mix for 40 seconds.

[0063] Use a weighing scale to accurately measure and feed the extruder;

[0064] The length-to-diameter ratio of the extruder is 5...

Embodiment 3

[0070] Weigh each component according to the following weight percentages:

[0071] Composition Proportion% PHAs 70 corn starch 20 glycerin 5 calcium carbonate 1 DOA 2 Toluene diisocyanate 1 Diglycidyl esters, bis(2-oxaline) 0.5 bisphenol A phosphite 0.1 dodecylthiopropyl ester 0.1 Oleamide 0.1 Ethylene bis stearamide 0.2

[0072] The preparation process is as follows:

[0073] Mix glycerin and DOA evenly and transfer to liquid metering pump;

[0074] Put PHA, cornstarch, and calcium carbonate into the frequency conversion high-speed mixer according to the ratio and mix them evenly. At the same time, turn on the liquid metering pump to accurately measure and inject oil and mix for 135 seconds. After adding the additives, turn to high speed and mix for 40 seconds.

[0075] Use a weighing scale to accurately measure and feed the extruder;

[0076] The length-to-diameter ratio of the extruder is 5...

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Abstract

The invention discloses an amylum category complete biodegradable material and a preparation method thereof. The amylum category complete biodegradable material comprises, by weight, the long-chain branch aliphatic polyester or long-chain branch aliphatic series- aromatic copolyesters 50-70%, the starch 20-30%, the chain extender 0.1-3% and the balance chain extender 9-17%. The preparation method comprises the steps of enabling all components to be mixed in a high speed mixer, feeding in a twin-screw extruder after accurate measurement by means of a measurement scale, and extruding and prilling by adjusting a built-up sequence of a screw and designing different exhaust ports. The amylum category complete biodegradable material and the preparation method of the amylum category complete biodegradable material solve the problems of dispersing, plasticizing and exhausting of starch filler in the twin-screw extruder, and obtained amylum complete biodegradation material not only has complete biodegradation performance, but also has excellent mechanical property and good extrusion molding working quality.

Description

technical field [0001] The invention relates to a starch-based complete biodegradable material under composting conditions and a preparation method thereof. Background technique [0002] In recent years, the development of biodegradable plastics has been increasing day by day, and their applications have continued to expand. They have gradually replaced traditional plastics in the fields of packaging materials, disposable tableware, agricultural mulch and daily products. At present, in terms of performance and price, compared with traditional plastics, the performance of biodegradable plastics is too single, and the price is too expensive, which greatly limits the further development of biodegradable plastics. [0003] Among biodegradable polymer plastics, starch, polylactic acid PLA, polycaprolactone PCL, poly β-hydroxyalkanoate PHA, etc. are currently used more. Polylactic acid is obtained through starch fermentation and monomer polymerization. , is a type of aliphatic po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L67/02C08L67/04C08L3/02B29C47/38B29B7/02B29C48/395
CPCB29C47/6056B29C47/6031B29C47/6037B29C48/40B29C48/54B29C48/55B29C48/57
Inventor 钟宇科焦建苑仁旭赵崴徐依斌曾祥斌蔡彤旻夏世勇
Owner KINGFA SCI & TECH CO LTD
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