CN103467782A - Biodegradable plastic and preparation method thereof - Google Patents
Biodegradable plastic and preparation method thereof Download PDFInfo
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- CN103467782A CN103467782A CN2013104317302A CN201310431730A CN103467782A CN 103467782 A CN103467782 A CN 103467782A CN 2013104317302 A CN2013104317302 A CN 2013104317302A CN 201310431730 A CN201310431730 A CN 201310431730A CN 103467782 A CN103467782 A CN 103467782A
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Abstract
The invention belongs to the field of biological environment-friendly materials, and discloses a biodegradable plastic. The plastic is prepared from rice starch, white graphite, methylcellulose, pyritic ash, chitosan, acetaldehyde, glycerinum, polyethyleneglycol, polyglycolic acid, barium stearate, carborundum powder, calcium borate, dolomite dust, talc powder, casein and agar. The prepared plastic is good in biodegradability and safety performance, and can be widely applied to the field of foods and medicines.
Description
Technical field
The invention belongs to the biological environmental production Material Field, be specifically related to a kind of biodegradable plastics and preparation method thereof.
Background technology
Plastics are one of the most frequently used materials of industry and life.The high speed development of Plastics Industry brings great convenience to people's productive life, but " white pollution " problem caused by plastic refuse is also day by day serious, the problem of environmental pollution that the plastics of difficult degradation cause more and more is subject to concern and the attention of countries in the world.Using bio-degradable plastics is a fundamental way that solves plastic pollution.In the research process of seeking the pollution of degradable plastics solution plastic garbage, the biodegradable plastic that the starch of take obtains as basic material has obtained development rapidly.In bio-degradable plastics, this natural high molecular substance of starch has wide material sources, cheap, the regeneration period is short, can be under multiple environment complete biodegradable, can not produce to environment the advantages such as any pollution, be the good natural biological degradable material of development prospect.But mechanical property and the resistance toheat of pure starch plastics are lower, it is applied and be greatly limited.
Prior art CN102417615A discloses a kind of biodegradable plastic, and these plastics possess certain biodegradability, but also has the poor and basic defects such as plastics performance reduction of degradation property; CN101696284A discloses a kind of degradable plastics, and this plastic raw materials cost is higher, the unfavorable suitability for industrialized production of using.Prior art urgently needs a kind of biological degradability good and plastics performance and the good environmentally-friendly plastic material of safety performance.
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Summary of the invention
The objective of the invention is to solve degradability and the poor defect of security of plastics in prior art, a kind of biodegradable plastics are provided.
The present invention is achieved by the following technical solution:
A kind of biodegradable plastics, its raw material by following weight parts is prepared from: W-Gum 30-40, white graphite 20-30, methylcellulose gum 20-30, pyritic ashes 12-15, chitin 10-12, acetaldehyde 40-50, glycerine 20-25, polyoxyethylene glycol 10-12, polyglycolic acid 10-12, barium stearate 6-8, carborundum powder 4-6, lime borate 3-5, ground dolomite 2-3, talcum powder 2-3, casein 1-2 and agar 1-2; More than described W-Gum, white graphite, pyritic ashes, carborundum powder, ground dolomite and talcum powder all are controlled at 500 orders.
First above-mentioned raw materials is added in retort successively, the stirring of raw material limit is added on limit, after stirring, then enters in twin screw extruder, under the condition that is 180 ℃-200 ℃ at extrusion temperature, extrudes, and obtains.
The invention also discloses a kind of preparation method of biodegradable plastics.
The beneficial effect that the present invention obtains is as follows:
Compared with prior art, biodegradability is good in the present invention, and preparation method's simple possible, is applicable to large-scale industrial production; The plastics various aspects of performance that the present invention produces is better, and possesses security, can be used for the industries such as food medical packaging; The present invention has selected best proportioning raw materials by test of many times, and has added agar and casein, by physical and chemical reaction, makes the combination of each composition tightr, makes can not penetrating of air and moisture, has greatly improved performance.The various material components that the present invention selects make plastics more easily be subject to the erosion of Soil Microorganism, thereby obtain degrading sooner.The raw material that the present invention selects is cheap, and cost is lower, has guaranteed the benefit of enterprise.
Embodiment
Below will adopt specific embodiment to be further explained the present invention, but should not regard the restriction to initiative spirit of the present invention as.
Embodiment 1
A kind of biodegradable plastics, its raw material by following weight parts is prepared from: W-Gum 30, white graphite 20, methylcellulose gum 20, pyritic ashes 12, chitin 10, acetaldehyde 40, glycerine 20, polyoxyethylene glycol 10, polyglycolic acid 10, barium stearate 6, carborundum powder 4, lime borate 3, ground dolomite 2, talcum powder 2, casein 1 and agar 1; Described W-Gum, white graphite, pyritic ashes, carborundum powder, ground dolomite and talcum powder all are controlled at 500 orders.
First above-mentioned raw materials is added in retort successively, the stirring of raw material limit is added on limit, after stirring, then enters in twin screw extruder, under the condition that is 180 ℃ ℃ at extrusion temperature, extrudes, and obtains.
Embodiment 2
A kind of biodegradable plastics, its raw material by following weight parts is prepared from: W-Gum 40, white graphite 30, methylcellulose gum 30, pyritic ashes 15, chitin 12, acetaldehyde 50, glycerine 25, polyoxyethylene glycol 12, polyglycolic acid 12, barium stearate 8, carborundum powder 6, lime borate 5, ground dolomite 3, talcum powder 3, casein 2 and agar 2; Described W-Gum, white graphite, pyritic ashes, carborundum powder, ground dolomite and talcum powder all are controlled at 600 orders.
First above-mentioned raw materials is added in retort successively, the stirring of raw material limit is added on limit, after stirring, then enters in twin screw extruder, under the condition that is 200 ℃ at extrusion temperature, extrudes, and obtains.
Embodiment 3
The Performance Detection of the plastics of above-described embodiment 1 and 2 preparations, specifically in Table 1
Table 1
| Performance perameter | Embodiment 1 | Embodiment 2 |
| Elongation at break (%) | 179 | 187 |
| Tensile strength (Mpa) | 17.8 | 18.3 |
| Biological degradation rate (burst size of compost carbonic acid gas after 90 days, ISO14885 standard) | 94.6% | 94.3% |
| Hemolytic test | Hemolysis rate is less than 1% | Hemolysis rate is less than 1% |
| Sensitivity response | Be less than the I degree | Be less than the I degree |
Conclusion: through performance test can find, plastics performance and safety performance prepared by the present invention are better, and can biological degradation, and degradation rate can reach more than 94%, greatly reduces the pollution to environment, safely the relieved medicine food field that is applied to; Other like products that obviously are better than prior art.
Finally, it is also to be noted that, what more than enumerate is only several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention, all should think protection scope of the present invention.
Claims (4)
1. biodegradable plastics, its raw material by following weight parts is prepared from: W-Gum 30-40, white graphite 20-30, methylcellulose gum 20-30, pyritic ashes 12-15, chitin 10-12, acetaldehyde 40-50, glycerine 20-25, polyoxyethylene glycol 10-12, polyglycolic acid 10-12, barium stearate 6-8, carborundum powder 4-6, lime borate 3-5, ground dolomite 2-3, talcum powder 2-3, casein 1-2 and agar 1-2.
2. plastics as claimed in claim 1, is characterized in that, more than described W-Gum, white graphite, pyritic ashes, carborundum powder, ground dolomite and talcum powder all are controlled at 500 orders.
3. plastics as described as claim 1-2, is characterized in that, the preparation method of described plastics is as follows:
At first above-mentioned raw materials is added in retort successively, the stirring of raw material limit is added on limit, stirs, and then enters in twin screw extruder, under the condition that is 180 ℃ of-200 ℃ of left and right at extrusion temperature, extrudes, and obtains.
4. claim 1-3 lets alone the application of described plastics in food and drug packaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310431730.2A CN103467782B (en) | 2013-09-22 | 2013-09-22 | A kind of biodegradable plastics and preparation method thereof |
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| CN201310431730.2A CN103467782B (en) | 2013-09-22 | 2013-09-22 | A kind of biodegradable plastics and preparation method thereof |
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| CN103467782A true CN103467782A (en) | 2013-12-25 |
| CN103467782B CN103467782B (en) | 2015-08-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106349511A (en) * | 2016-08-24 | 2017-01-25 | 安徽顺彤包装材料有限公司 | Degradable granular medicine packaging material and preparation method thereof |
| CN108129702A (en) * | 2017-12-01 | 2018-06-08 | 广州雅塑包装技术服务有限公司 | A kind of bottle cap material capable of being fast degraded and its manufacture craft |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090048145A1 (en) * | 2004-06-09 | 2009-02-19 | Scil Technology Gmbh | In situ hardening paste, its manufacturing and use |
| CN102382355A (en) * | 2011-09-21 | 2012-03-21 | 安徽金田通信科技实业有限公司 | Low-smoke environment-friendly cable material and preparation method thereof |
| CN103214805A (en) * | 2013-04-19 | 2013-07-24 | 山东罗欣阳光包装制品有限公司 | Biodegradable barrier-type medicinal packaging bottle and preparation method thereof |
-
2013
- 2013-09-22 CN CN201310431730.2A patent/CN103467782B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090048145A1 (en) * | 2004-06-09 | 2009-02-19 | Scil Technology Gmbh | In situ hardening paste, its manufacturing and use |
| CN102382355A (en) * | 2011-09-21 | 2012-03-21 | 安徽金田通信科技实业有限公司 | Low-smoke environment-friendly cable material and preparation method thereof |
| CN103214805A (en) * | 2013-04-19 | 2013-07-24 | 山东罗欣阳光包装制品有限公司 | Biodegradable barrier-type medicinal packaging bottle and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106349511A (en) * | 2016-08-24 | 2017-01-25 | 安徽顺彤包装材料有限公司 | Degradable granular medicine packaging material and preparation method thereof |
| CN108129702A (en) * | 2017-12-01 | 2018-06-08 | 广州雅塑包装技术服务有限公司 | A kind of bottle cap material capable of being fast degraded and its manufacture craft |
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| CN103467782B (en) | 2015-08-19 |
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Denomination of invention: Biodegradable plastic and preparation method thereof Effective date of registration: 20211228 Granted publication date: 20150819 Pledgee: Linyi Hedong qishang Village Bank Co.,Ltd. Pledgor: SHANDONG LIYANG INDUSTRY CO.,LTD. Registration number: Y2021980016591 |