CN101824212A - Preparation method of polylactic acid degradable material - Google Patents
Preparation method of polylactic acid degradable material Download PDFInfo
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- CN101824212A CN101824212A CN 201019050016 CN201019050016A CN101824212A CN 101824212 A CN101824212 A CN 101824212A CN 201019050016 CN201019050016 CN 201019050016 CN 201019050016 A CN201019050016 A CN 201019050016A CN 101824212 A CN101824212 A CN 101824212A
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Abstract
The invention relates to the technical field of a production method of a degradable material, in particular to a preparation method of a polylactic acid degradable material. The method comprises the following steps: firstly, preparing the following raw materials in percentage by weight: 50-95% of polylactic acid, 4-45% of polyhydric polyester and 1-5% of talcum powder; adding the polylactic acid, the polyhydric polyester and the talcum powder to a high-speed mixer, and uniformly stirring; and finally, placing the uniformly-mixed materials in a pelletizer, mixing, melting, extruding, cooling, and pelleting to obtain the degradable material. The production method of the invention has the advantage of simple process, adopts a one-step method to mix the various materials, and uses a double screw extruder to pelletize the materials to obtain the prepared material. The film made of the degradable material prepared by the invention has the advantages of good film formation and various excellent performance indices.
Description
Technical field:
The present invention relates to degradation material production method technical field, refer in particular to a kind of preparation method of polylactic acid degradable material.
Background technology:
Poly(lactic acid) (PLA) is also referred to as polylactide, belongs to polyester family.Poly(lactic acid) is the polymkeric substance that obtains for the main raw material polymerization with lactic acid, and raw material sources fully and can regenerate.The production process of poly(lactic acid) is pollution-free, and product can biological degradation, is implemented in the circulation of occurring in nature, is the ideal green macromolecular material therefore.
Because poly(lactic acid) is a kind of novel biodegradable material, the starch material that uses reproducible plant resources (as corn) to be proposed is made.Starch material is made lactic acid via fermenting process, converts poly(lactic acid) to by chemosynthesis again.It has good biodegradability, can be degraded fully by the occurring in nature microorganism after the use, finally generates carbonic acid gas and water, and is free from environmental pollution, and this is highly beneficial to the protection environment, is the environment-friendly material of generally acknowledging.
For a long time, our employed plastic prod, for example the plastic sheeting for farm use material all is to use oil synthetic resins, as polyvinyl chloride, the disposable finished product that polypropylene, materials such as polyethylene are made, go out of use after using up and be rubbish, what have is abandoned everywhere, and what have is buried or burn by heap, has wasted resource greatly.These plastic prods need just can be decomposed in about 200 years.And it is carried out the direct atmosphere pollution of objectionable impurities and the water source that produce in the treating processes.These depleted water-retaining films also produce very big destruction to the Soil structure in soil, have directly caused a series of adverse consequencess such as the soil underproduction.
Based on above-mentioned said, it has been a present research direction that poly(lactic acid) is applied in traditional plastic prod, but in actual fabrication process, also there is certain deficiency in poly-lactic acid material, for example its shock resistance, thermostability etc. all exist not enough, particularly be applied in the products such as film, also require further study.The inventor just is being based on this, proposes the technical program.
Summary of the invention:
Technical problem to be solved by this invention just is to provide a kind of preparation method of polylactic acid degradable material.The film of producing by the degradation material of this method preparation, its good film-forming property, every performance index excellence, can be widely used in the production technique of film product, and this film product is after using, be discarded in the Nature or heap is embedded in the rubbish, can to year, be resolved into carbonic acid gas and water etc. fully, can not form and destroy Soil structure in half a year.
For solving the technology of the present invention problem, the present invention has adopted following technical scheme: one, prepare raw material according to following weight percent: poly(lactic acid): 50-95%; Polyol polyester: 4-45%; Talcum powder: 1-5%; Two, poly(lactic acid), polyol polyester and talcum powder are joined in the high-speed mixer, stir; Three, the above-mentioned raw material that mixes is put into tablets press and carried out mixing, fusion, extrude, cool off the back pelletizing, obtain degradation material.
Described polyol polyester is poly-(sebacic acid 2-glycidyl ester-D, L MALIC ACID), poly-(nonane diacid 2-glycidyl ester-D, L MALIC ACID), gather (sebacic acid 2-glycidyl ester-sebacic acid), a kind of or its mixture of poly-(sebacic acid 2-glycidyl ester-hexanodioic acid), poly-(sebacic acid 2-glycidyl ester-Succinic Acid), poly-(hexanodioic acid 2-glycidyl ester-hexanodioic acid), poly-(Succinic Acid 2-glycidyl ester-Succinic Acid).
Adopted twin screw extruder in the described tablets press.
Adopt the cooling extruded fusion billot of water-cooling pattern in the described tablets press, wherein, the tank temperature of cooling water should remain on 20 ℃.
The advantage of production method of the present invention is that technology is simple, adopts single stage method that various raw materials are mixed, and can obtain prepared material by the twin screw extruder granulation, and the prepared degradation material of the present invention has following advantage.
(1) mechanical property and physicals are good.This material is applicable to various working methods such as blowing, thermoplastic, and is easy to process, uses very extensive.Can be used for processing from industry to civilian various plastics, wrap food, fast food lunch-box, non-woven fabrics, industry and civilian cloth.And then be processed into geotextile, health care fabric, rag, sanitary product, outdoor antiultraviolet fabric, tent cloth, ground cushion face etc.
(2) consistency and degradability are good.
(3) have the best tensile strength and extensibility, be beneficial to blowfilm shaping.
(4) adopt the film product of the material making of the present invention's preparation to have air permeability and good, and have good antibacterial and anti-mildew characteristic.
(5) when incinerating, can not discharge toxic gases such as nitride, sulfide.
In sum, the material that the present invention is prepared, its degradation property is good, degraded fully, environmentally safe, nontoxicity, can Soil structure produce and destroy.In addition, its production technique is simple, cost is low, and use properties is superior.
The specific embodiment mode:
The present invention is described further below in conjunction with embodiment,
This preparation methods comprises the steps:
One, prepare raw material according to following weight percent:
Poly(lactic acid) 50-95%
Polyol polyester 4-45%
Talcum powder 1-5%
Two, poly(lactic acid), polyol polyester and talcum powder are joined in the high-speed mixer, stir;
Three, the above-mentioned raw material that mixes is put into tablets press and carried out mixing, fusion, extrude, cool off the back pelletizing, obtain degradation material.
Polyol polyester is poly-(sebacic acid 2-glycidyl ester-D among the present invention, L MALIC ACID), poly-(nonane diacid 2-glycidyl ester-D, L MALIC ACID), gather (sebacic acid 2-glycidyl ester-sebacic acid), a kind of or its mixture of poly-(sebacic acid 2-glycidyl ester-hexanodioic acid), poly-(sebacic acid 2-glycidyl ester-Succinic Acid), poly-(hexanodioic acid 2-glycidyl ester-hexanodioic acid), poly-(Succinic Acid 2-glycidyl ester-Succinic Acid).Polyol polyester after poly(lactic acid) is mixed, is used to improve the performance of material as softening agent among the present invention and toughner.
Talcum powder is as lubricant of the present invention.
Below be specific embodiments of the invention:
Embodiment one:
Poly(lactic acid): 50%; Poly-(sebacic acid 2-glycidyl ester-D, L MALIC ACID): 45%; Talcum powder: 5%;
Embodiment two:
Poly(lactic acid): 95%; Poly-(nonane diacid 2-glycidyl ester-D, L MALIC ACID): 4%; Talcum powder: 1%;
Adopted twin screw extruder in the tablets press of the present invention, will adopt the cooling extruded fusion billot of water-cooling pattern in the described tablets press, wherein, processing temperature is 180 ℃, and screw speed is 150rpm.。Ultimogenitary biodegradable resin particle specification is: granularity is φ 2-3mm, and length is 3-4mm, cylindrical particle.
Claims (3)
1. the preparation method of a polylactic acid degradable material, it is characterized in that: this preparation methods comprises the steps:
One, prepare raw material according to following weight percent:
Poly(lactic acid) 50-95%
Polyol polyester 4-45%
Talcum powder 1-5%
Two, poly(lactic acid), polyol polyester and talcum powder are joined in the high-speed mixer, stir;
Three, the above-mentioned raw material that mixes is put into tablets press and carried out mixing, fusion, extrude, cool off the back pelletizing, obtain degradation material.
2. the preparation method of a kind of polylactic acid degradable material according to claim 1, it is characterized in that: described polyol polyester is poly-(sebacic acid 2-glycidyl ester-D, L MALIC ACID), poly-(nonane diacid 2-glycidyl ester-D, L MALIC ACID), gather (sebacic acid 2-glycidyl ester-sebacic acid), a kind of or its mixture of poly-(sebacic acid 2-glycidyl ester-hexanodioic acid), poly-(sebacic acid 2-glycidyl ester-Succinic Acid), poly-(hexanodioic acid 2-glycidyl ester-hexanodioic acid), poly-(Succinic Acid 2-glycidyl ester-Succinic Acid).
3. the preparation method of a kind of polylactic acid degradable material according to claim 1, it is characterized in that: adopted twin screw extruder in the described tablets press, processing temperature is 140～200 ℃, and screw speed is 30-300rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201019050016 CN101824212B (en) | 2010-02-02 | 2010-02-02 | Preparation method of polylactic acid degradable material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201019050016 CN101824212B (en) | 2010-02-02 | 2010-02-02 | Preparation method of polylactic acid degradable material |
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| CN101824212A true CN101824212A (en) | 2010-09-08 |
| CN101824212B CN101824212B (en) | 2013-06-05 |
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| CN 201019050016 Expired - Fee Related CN101824212B (en) | 2010-02-02 | 2010-02-02 | Preparation method of polylactic acid degradable material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922618A (en) * | 2011-04-01 | 2013-02-13 | 南京工业大学 | Preparation system device and preparation method for high-performance black master-batches |
| CN104086777A (en) * | 2014-07-01 | 2014-10-08 | 上海紫华企业有限公司 | PLA (poly lactic acid) modified material and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644794A (en) * | 2004-12-17 | 2005-07-27 | 中国科学院长春应用化学研究所 | Completely biological degradable polylactic coating materials |
| KR100899642B1 (en) * | 2008-09-19 | 2009-05-27 | (주)태원시스켐 | Biodegradable resin composition containing polylactic acid for manufacturing cellular phone case and manufacturing method of cellular phone case using the same |
-
2010
- 2010-02-02 CN CN 201019050016 patent/CN101824212B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922618A (en) * | 2011-04-01 | 2013-02-13 | 南京工业大学 | Preparation system device and preparation method for high-performance black master-batches |
| CN102922618B (en) * | 2011-04-01 | 2015-04-08 | 南京工业大学 | Preparation system device and preparation method for high-performance black master-batches |
| CN104086777A (en) * | 2014-07-01 | 2014-10-08 | 上海紫华企业有限公司 | PLA (poly lactic acid) modified material and preparation method thereof |
| CN104086777B (en) * | 2014-07-01 | 2017-02-15 | 上海紫华企业有限公司 | PLA (poly lactic acid) modified material and preparation method thereof |
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| Publication number | Publication date |
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| CN101824212B (en) | 2013-06-05 |
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Owner name: ZHU GUANGFU Free format text: FORMER OWNER: GUANGDONG SHANGJIU BIODEGRADATION PLASTIC CO., LTD. Effective date: 20140701 |
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Effective date of registration: 20140701 Address after: 518000 Futian District, Guangdong, South Tianshan building, building 2,, 412 Patentee after: Zhu Guangfu Address before: 523000 Guangdong city of Dongguan province Dongcheng District cattle Shanzhong Wu Wei nine industrial park Patentee before: Guangdong Shangjiu Biodegradable Plastics Co., Ltd. |
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