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Full biological degradation plastic and production method thereof

A technology for degrading plastics and a production method, applied in the field of biochemistry, can solve the problems of inability to be completely degraded, difficult for biological contact with starch, poor mechanical properties, etc., and achieve the effects of low price, improved grade, and good mechanical properties

Inactive Publication Date: 2007-10-03
胡燕针
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the starch content is low, and it is covered with synthetic resin, it is difficult for organisms to contact starch, it cannot be completely degraded, and it will also cause environmental pollution.
Chinese Patent Publication No. CN1624034 discloses a POL biodegradable plastic and its preparation process, which has problems such as low starch content, poor mechanical properties, inability to completely and quickly degrade in the environment, and high cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The formula is: it contains the following components (percentage by weight)

[0033] Corn starch 30%, polyethylene resin 15%, stearic acid 20%, PE 30%, polyalkylene glycol, dipentyl iron, dimethylacetamide and other additives 5%, natural rose fragrance 1%

[0034] The production method of the above-mentioned biodegradable plastics is carried out in sequence as follows:

[0035] (A) The natural cornstarch is mixed with additives such as polyethylene resin, stearic acid, PE, polyalkylene glycol, dipentyl iron, dimethylacetamide, and plant spices by the above weight after being screened over 120 meshes. Carry out primary mixing and polymerization according to the content, 10 minutes;

[0036] (B) Using a high-speed mixer to carry out secondary blending and copolymerization of the material obtained in step A at 90° C., and granulating through an extruder;

[0037] (C) Use an injection molding machine to carry out three-stage blending, copolymerization, and extrusion of th...

Embodiment 2

[0039] The formula is: it contains the following components (percentage by weight)

[0040] Sweet potato starch 45%, polypropylene resin 12%, oleic acid 15%, PE 20%, polyvinylpyrrolidone, antimony dioxide, sodium cumene sulfonate and other additives 4%, jasmine fragrance 0.5%

[0041] The production method of the above-mentioned biodegradable plastics is carried out in sequence as follows:

[0042] (A) After the sweet potato starch raw material is screened through 120 meshes or more, it is mixed and polymerized with polypropylene resin, oleic acid, PE, polyvinylpyrrolidone, antimony dioxide, sodium cumene sulfonate and other additives, and jasmine fragrance, 6 minute;

[0043] (B) Using a high-speed mixer to carry out secondary blending and copolymerization of the material obtained in step A at 120° C., and granulating through an extruder;

[0044] (C) Use an injection molding machine to carry out three-stage blending, copolymerization, and extrusion of the material obtained...

Embodiment 3

[0046] The formula is: it contains the following components (percentage by weight)

[0047] Potato starch 60%, polyvinyl chloride resin 10%, soft fatty acid 10%, PE 10%, polyquaternium salt, pentapentyl iron, N-methylpyrrolidone and other additives 3%, jasmine fragrance 0.5%

[0048] The production method of the above-mentioned biodegradable plastics is carried out in sequence as follows:

[0049] (A) After the potato starch raw material is screened through 120 mesh or more, it is mixed with auxiliary agents such as polyvinyl chloride resin, soft fatty acid, PE, polyquaternium salt, pentapentyl iron, N-methylpyrrolidone, and jasmine spice according to the above weight percentage. Carry out primary mixing and polymerization, 8 minutes;

[0050] (B) Using a high-speed mixer to carry out secondary blending and copolymerization of the material obtained in step A at 160° C., and granulating through an extruder;

[0051] (C) Use an injection molding machine to carry out three-stag...

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PUM

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Abstract

The invention discloses a full biological degradation plastic and production method thereof. The full biological degradation plastic contains the following components(weight percentage): amylum 30~60%, resin 10~15%, grease 12~20%, PE 10~30%, accessory ingredient 3~5%, plant perfume materials 0.5~1%. The production method includes the following steps: (A)calendering and polymerizing the amylum materials filtrated by 120 meshes and PE according to said percentage composition for 6~10 minutes; (B)blending the materials obtained in step A by high-speed muller at the temperature between 90~160 degrees and pelleting by extruding machine; (C)blending, polymerizing and extruding the materials obtained in step B by injection machine at the temperature between 110~130 degrees and blow molding according to requirements. The invention has a relatively higher content of amylum, good biological degradability, low cost and does not pollute environment.

Description

technical field [0001] The invention relates to the field of biochemistry, in particular to degradable plastics and a production method thereof. Background technique [0002] Plastic film bags have entered the daily life of thousands of households. They have a wide range of uses and a huge amount, occupying an important position. In most cases, these film bags are discarded in domestic, construction, industrial and other garbage after one-time use. Since they cannot be degraded or harmlessly treated, "white pollution" is becoming more and more serious, causing environmental pollution, destroying ecology, and harming human beings. Health is a threat. When solving the two major problems of limited resources and serious ecological environment pollution in the development of the plastics industry, the study found that natural polymer materials can be biodegraded in a variety of environments to form degradation products Co 2 and H 2 o, will not cause environmental harm, and ca...

Claims

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Application Information

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IPC IPC(8): C08L3/02B29C49/00C08L23/06C08L91/00
Inventor 胡燕针
Owner 胡燕针
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