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Polymer environment-friendly degradable material and preparation method thereof

A technology of degradable materials and polymers, which is applied in the field of polymer environmental degradation materials and their preparation, can solve the problems of environmental adverse effects, incomplete degradation, etc., achieve environmental friendliness, increase surface area and porosity, and reduce costs

Inactive Publication Date: 2012-06-20
GUANGZHOU YOURUI BIOSCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the addition of plastic components, it is not completely degradable and still has adverse effects on the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A polymer environment-friendly degradable material, its raw material composition and mass percentage are:

[0028] Corn Starch 60%

[0029] Bagasse 35%

[0030] Titanate coupling agent 5%.

[0031] The preparation method of the above-mentioned polymer environment-friendly degradable material comprises the following steps:

[0032] (1) Bagasse pretreatment: crush the bagasse into a powder of 10-25 μm, and then carry out steam explosion treatment, the pressure is 2.0MPa, and the time is 10min;

[0033] (2) The starch is pre-dried, and then mixed with a titanic acid coupling agent into a high-speed mixer at a temperature of 80°C;

[0034] (3) Add the bagasse powder obtained in step (1) to the high-speed mixer of step (2) and mix at a temperature of 85°C;

[0035] (4) Pour the material obtained in step (3) into the twin-screw extruder, control the temperature range of the heating zone of the twin-screw extruder to be 130°C-200°C, the speed of the main engine is 16r / min,...

Embodiment 2

[0038] A polymer environment-friendly degradable material, its raw material composition and mass percentage are:

[0039] Potato starch 50%

[0040] Bagasse 45%

[0041] Titanate coupling agent 5%.

[0042] The preparation method of the above-mentioned polymer environment-friendly degradable material comprises the following steps:

[0043] (1) Bagasse pretreatment: crush the bagasse into powder of 10-25 μm, and then carry out steam explosion treatment, the pressure is 1.5MPa, and the time is 8min;

[0044] (2) The starch is pre-dried, and then mixed with a titanic acid coupling agent into a high-speed mixer at a temperature of 85°C;

[0045] (3) adding the bagasse powder obtained in step (1) to the high-speed mixer of step (2) and mixing, the temperature is: 80°C;

[0046] (4) Pour the material obtained in step (3) into the twin-screw extruder, control the temperature range of the heating zone of the twin-screw extruder to be 130°C-200°C, the speed of the main engine is 14...

Embodiment 3

[0049] A polymer environment-friendly degradable material, its raw material composition and mass percentage are:

[0050] Potato Starch 70%

[0051] Bagasse 25%

[0052] Titanate coupling agent 5%.

[0053] The preparation method of the above-mentioned polymer environment-friendly degradable material comprises the following steps:

[0054] (1) Bagasse pretreatment: crush the bagasse into powders of 10-25 μm, and then carry out steam explosion treatment, the pressure is 2.2MPa, and the time is 5min;

[0055] (2) The starch is pre-dried, and then mixed with a titanic acid coupling agent into a high-speed mixer at a temperature of 75°C;

[0056] (3) Add the bagasse powder obtained in step (1) to the high-speed mixer of step (2) and mix at a temperature of 90°C;

[0057] (4) Pour the material obtained in step (3) into the twin-screw extruder, control the temperature range of the heating zone of the twin-screw extruder to be 130°C-200°C, the speed of the main engine is 18r / min,...

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Abstract

The invention discloses a polymer environment-friendly degradable material comprising the following raw materials by weight: 50-70% of starch, 25-45% of bagasse and 1-10% of titanate coupling agent. The polymer environmental-friendly degradable material is environmentally friendly, pollution-free and fully biodegradable and can be processed to produce degradable tableware, special packaging materials and other products. The degradable material can be produced from the plastic by mechanical processing, the process for preparing the degradable material is simplified, and the cost of the degradable material is reduced.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a polymer environment-friendly degradable material and a preparation method thereof. Background technique [0002] Starch-filled biodegradable plastics are currently the most well-studied biodegradable plastics at home and abroad, and are especially popular in my country. Starch as a filler can be raw starch, physically modified starch or chemically modified starch, or a copolymer formed by reacting with a monomer. The synthetic resins that can be blended with starch include polyethylene, polyvinyl alcohol, polyvinyl chloride , polystyrene, polyester, etc. Among them, polyethylene or polyvinyl alcohol added starch degradable plastic is the main research object. Canada St.Lawrance Company carries out hydrophobic treatment of starch with silane coupling agent and blends it with polyethylene to make a master batch named E-costar for sale, wherein the starch content is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L97/02C08K5/10
Inventor 刘立国刘柏楠林香瑶杨尉
Owner GUANGZHOU YOURUI BIOSCI
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