CN103467782B - A kind of biodegradable plastics and preparation method thereof - Google Patents
A kind of biodegradable plastics and preparation method thereof Download PDFInfo
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- CN103467782B CN103467782B CN201310431730.2A CN201310431730A CN103467782B CN 103467782 B CN103467782 B CN 103467782B CN 201310431730 A CN201310431730 A CN 201310431730A CN 103467782 B CN103467782 B CN 103467782B
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Abstract
The invention belongs to biological environmental production Material Field, disclose a kind of biodegradable plastics.These plastics are prepared from by rice starch, white graphite, methylcellulose gum, pyritic ashes, chitin, acetaldehyde, glycerine, polyoxyethylene glycol, polyglycolic acid, barium stearate, carborundum powder, lime borate, ground dolomite, talcum powder, casein and agar.Plastics prepared by the present invention possess good biological degradability and safety performance, can be widely used in food and medicine field.
Description
Technical field
The invention belongs to biological environmental production Material Field, be specifically related to a kind of biodegradable plastics and preparation method thereof.
Background technology
Plastics are industry and one of the most frequently used material of living.The high speed development of Plastics Industry brings great convenience to the productive life of people, but " white pollution " problem caused by plastic refuse is also day by day serious, the problem of environmental pollution of the plastics initiation of difficult degradation is more and more subject to concern and the attention of countries in the world.Bio-degradable plastics is used to be the fundamental way solving plastic pollution.In the research process seeking the pollution of degradable plastics solution plastic garbage, the biodegradable plastic that raw material obtains based on starch obtains and develops rapidly.In bio-degradable plastics, this natural high molecular substance of starch has wide material sources, cheap, the regeneration period is short, can in a variety of contexts complete biodegradable, the advantages such as any pollution can not be produced to environment, be the good natural biological degradable material of development prospect.But mechanical property and the resistance toheat of pure starch plastics are lower, make it apply and are greatly limited.
Prior art CN102417615A discloses a kind of biodegradable plastic, and these plastics possess certain biodegradability, but also there is the defects such as the poor and basic plastics performance reduction of degradation property; CN101696284A discloses a kind of degradable plastics, and this plastic raw materials cost is higher, unfavorable suitability for industrialized production.Prior art urgently needs a kind of biological degradability good and plastics performance and the good environmentally-friendly plastic material of safety performance.
Summary of the invention
The object of the invention is to solve the degradability of plastics in prior art and the poor defect of security, provide a kind of biodegradable plastics.
The present invention is achieved by the following technical solution:
A kind of biodegradable plastics, it is prepared from by the raw material of following weight parts: 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; Described W-Gum, white graphite, pyritic ashes, carborundum powder, ground dolomite and talcum powder all control more than 500 orders.
First added successively in retort by above-mentioned raw materials, limit is added raw material limit and is stirred, and after stirring, then enters in twin screw extruder, is extrude under the condition of 180 DEG C-200 DEG C, obtains final product at extrusion temperature.
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, be 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 have selected best proportioning raw materials by test of many times, and with the addition of agar and casein, makes the combination of each composition more tight by physical and chemical reaction, makes can not penetrating of air and moisture, substantially increases performance.The various material components that the present invention selects make plastics more easily be subject to the erosion of Soil Microorganism, thus obtain degrading sooner.The raw material that the present invention selects is cheap, and cost is lower, ensure that the benefit of enterprise.
Embodiment
Below employing specific embodiment is further explained the present invention, but should not regards the restriction to initiative spirit of the present invention as.
Embodiment 1
A kind of biodegradable plastics, it is prepared from by the raw material of following weight parts: 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 control at 500 orders.
First added successively in retort by above-mentioned raw materials, limit is added raw material limit and is stirred, and after stirring, then enters in twin screw extruder, is extrude under the condition of 180 DEG C DEG C, obtains final product at extrusion temperature.
Embodiment 2
A kind of biodegradable plastics, it is prepared from by the raw material of following weight parts: 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 control at 600 orders.
First added successively in retort by above-mentioned raw materials, limit is added raw material limit and is stirred, and after stirring, then enters in twin screw extruder, is extrude under the condition of 200 DEG C, obtains final product at extrusion temperature.
Embodiment 3
The Performance Detection of plastics prepared by above-described embodiment 1 and 2, 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 I degree | Be less than I degree |
Conclusion: through performance test can find, plastics performance prepared by the present invention and safety performance are better, and can biological degradation, degradation rate can reach more than 94%, greatly reduces the pollution to environment, relievedly safely can be applied to medicine food field; Obviously be better than other like products of prior art.
Finally, it is also to be noted that what enumerate above is only several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be had.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (2)
1. biodegradable plastics, it is prepared from by the raw material of following weight parts: 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, it is characterized in that, described W-Gum, white graphite, pyritic ashes, carborundum powder, ground dolomite and talcum powder all control more than 500 orders.
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| 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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| CN103467782A CN103467782A (en) | 2013-12-25 |
| CN103467782B true CN103467782B (en) | 2015-08-19 |
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| 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1604693A1 (en) * | 2004-06-09 | 2005-12-14 | Scil Technology GmbH | In situ forming scaffold, its manufacturing and use |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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 |