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A kind of double degraded starch masterbatch and preparation method thereof

A double-degradation and starch technology, applied in the field of chemistry, can solve the problems of high cost, complex preparation process of degradable plastics, incomplete degradation, etc., and achieve the effects of low cost, complete degradation, and colorless and odorless appearance.

Active Publication Date: 2016-04-06
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current degradable plastics basically have the problems of complex preparation process, high cost or incomplete degradation, and continuous improvement is required to meet practical requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Hydrophobic treatment on the surface of raw starch

[0038] Take by weighing 60 parts by weight of raw corn starch and 3.5 parts by weight of silane coupling agent KH-550 (γ-aminopropyltriethoxysilane), put the weighed raw corn starch and silane coupling agent on high speed Pre-mix in the mixer, the mixing time is 3 minutes;

[0039] (2), configuration of raw materials

[0040] Add 30 parts by weight of polypropylene carrier, 3.5 parts by weight of lubricant calcium stearate, 3 parts by weight of photodegradant cerium stearate, etc. to the starch processed in step (1), and stir in a high-speed mixer for 3 minutes Discharge after stirring evenly;

[0041] (3), preparation of masterbatch

[0042] Add the homogeneously mixed material in step (2) into the hopper of the twin-screw extruder, extrude and granulate to obtain the double-degraded starch masterbatch, the rotating speed of the extruder is 280r / min, and the temperature of the six sections Respectively T 1 =...

Embodiment 2

[0045] (1) Hydrophobic treatment on the surface of raw starch

[0046] Take by weighing 70 parts by weight of raw corn starch and 3 parts by weight of titanate coupling agent TTS (isopropyl triisostearyl titanate), the weighed raw corn starch and aluminate coupling agent TTS is pre-mixed in a high-speed mixer, and the mixing time is 3 minutes;

[0047] (2), configuration of raw materials

[0048] Add 20 parts by weight of polypropylene carrier, 5 parts by weight of lubricant stearic acid, 2 parts by weight of photodegradant iron stearate, etc. to the starch processed in step (1), and stir in a high-speed mixer for 3 minutes Discharge after stirring evenly;

[0049] (3), preparation of masterbatch

[0050] Add the homogeneously mixed material in step (2) into the hopper of the twin-screw extruder, extrude and granulate to obtain the double-degraded starch masterbatch, the speed of the extruder is 300r / min, the temperature of the six sections Respectively T 1 =150°C, T 2 =...

Embodiment 3

[0053] (1) Hydrophobic treatment on the surface of raw starch

[0054] Take by weighing 75 parts by weight of raw corn starch and 5 parts by weight of silane coupling agent KH-550 (γ-aminopropyltriethoxysilane), put the weighed raw corn starch and silane coupling agent on high speed Pre-mix in the mixer, the mixing time is 3 minutes;

[0055] (2), configuration of raw materials

[0056] Add 17 parts by weight of polypropylene carrier, 2 parts by weight of lubricant calcium stearate, 1 part by weight of photodegradant nickel stearate, etc. to the starch processed in step (1), and stir in a high-speed mixer for 3 After stirring for 1 minute, the material is discharged;

[0057] (3), preparation of masterbatch

[0058] Add the homogeneously mixed material in step (2) into the hopper of the twin-screw extruder, extrude and granulate to obtain the double-degraded starch masterbatch, the rotating speed of the extruder is 320r / min, and the temperature of the six sections Respecti...

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PUM

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Abstract

The invention belongs to the technical field of chemistry, and relates to a double-degradation starch masterbatch and a preparation method thereof, wherein the starch masterbatch comprises the following raw materials in parts by weight: 60-75 parts of native starch, 15-30 parts of matrix, 2-5 parts of lubricant, 2-5 parts of hydrophobic treatment agent and 1-3 parts of photodegradable agent. The prepared degradable starch masterbatch takes the native starch as a biological activity degradation substance and the appropriate photodegradable agent as an adjuvant, and thereby being the masterbatch with the double-degradation function; and the starch masterbatch which is prepared by the method has better biodegradability than other starch masterbatches, good compatibility with the polymer to be degraded, is relatively lower in manufacturing cost, and has a certain practical value.

Description

technical field [0001] The invention belongs to the technical field of chemistry and relates to a starch masterbatch and a preparation method thereof. Background technique [0002] As plastic production continues to increase and its uses continue to expand, its waste is also increasing, especially the extensive use of agricultural greenhouse film, mulch film and disposable tableware, which has led to the "century-old problem" of serious soil and environmental pollution. In order to solve these problems, the methods currently used include incineration and landfill, but incineration will cause serious secondary pollution to the environment and landfill will cause waste of land resources. Therefore, the solution to both symptoms and root causes is to use degradable and easily degradable plastic products to replace non-degradable plastics. Degradable plastics can be converted into environmentally friendly products under certain conditions. These plastics can be decomposed by ab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L3/02C08L23/06C08L23/12B29B9/06B29C47/92B29C48/92
CPCB29C48/04
Inventor 杨俊
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD