CN103145945A - Preparation method of biodegradable plastic - Google Patents
Preparation method of biodegradable plastic Download PDFInfo
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- CN103145945A CN103145945A CN2013100735643A CN201310073564A CN103145945A CN 103145945 A CN103145945 A CN 103145945A CN 2013100735643 A CN2013100735643 A CN 2013100735643A CN 201310073564 A CN201310073564 A CN 201310073564A CN 103145945 A CN103145945 A CN 103145945A
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- Manufacture Of Macromolecular Shaped Articles (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a preparation method of biodegradable plastic, which comprises the following steps: sequentially adding water, triethanolamine, polyether glycol, silicon oil and Canna indica starch into an enamel reactor, uniformly stirring, pouring polyphenyl polymethylene polyisocyanate, and stirring at high speed to obtain a uniformly dispersed solution; and carrying out curtain coating on the obtained solution with a curtain coating machine to form a film, and drying the film-forming tray in a drying oven to obtain the biodegradable plastic. The preparation method provided by the invention has the advantages of simple technique and no toxicity or harm in the whole production process, and enables the workers to work in a good working environment. The prepared product is biodegradable; and after the product is buried in soil for 100 days, the weight loss rate after microbial degradation can reach 15.17%.
Description
Technical field
The present invention relates to field of plastics processing, particularly relate to a kind of preparation method of biodegradable plastic.
Background technology
Being widely used once of plastics brought many convenience and great riches to people, but plastic garbage has also brought many worries to people now, become an important factor that threatens ecotope.Plastic refuse can be in soil big area residual, long time integration can cause soil compaction, affects farm crop and absorbs nutrient and moisture, causes crop production reduction.The plastic refuse that is discarded in land or water body is eaten as food by animal, can cause animal dead.Plastics waste gas amount is light, volume is large, generally adopts the method for direct landfill to process, but long-time hard degradation, the degredation plastic goods are nontoxic because of degraded product, pollution-free receiving publicity.But traditional biodegradable plastics product producing process is complicated, and preparation process can cause environmental pollution, and Working environment is unfavorable for that the workman's is healthy.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of preparation method of biodegradable plastic, and this preparation method's technological process is simple and pollution-free.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of preparation method of biodegradable plastic is provided, comprises that step is:
(1) join successively water, trolamine, polyether glycol, silicone oil and canna starch in enamel reactor and stir, then pouring the polyphenyl polymethylene polyisocyanates high-speed stirring into, obtaining finely dispersed solution;
(2) with the solution that obtains by the casting machine casting film-forming, then will become membranous disc to put in baking oven to dry, obtain biodegradable plastic.
In a preferred embodiment of the present invention, described in step (1), whipping temp is 50-70 ℃.
In a preferred embodiment of the present invention, described in step (2), the velocity of flow of casting machine is set to 4-6m/min.
In a preferred embodiment of the present invention, described in step (2), the temperature setting of baking oven is set to 40-55 ℃.
The invention has the beneficial effects as follows: the preparation method of biodegradable plastic of the present invention, the method preparation technology is simple, whole production process is nontoxic, the workman is worked under good Working environment, the product that makes has biological degradability, bury in soil observe microbiological deterioration after 100 days after rate of weight loss can reach 15.17%.
Embodiment
The below is described in detail preferred embodiment of the present invention, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made more explicit defining.
Embodiment one:
(1) water, trolamine, polyether glycol, silicone oil and canna starch are joined in enamel reactor and under 70 ℃ successively stir, then pour the polyphenyl polymethylene polyisocyanates high-speed stirring into, obtain finely dispersed solution;
(2) with the solution that obtains by the casting machine casting film-forming, the velocity of flow of wherein said casting machine is set to 6m/min, then will become membranous disc to put in baking oven to dry, the temperature setting of wherein said baking oven is set to 50 ℃, obtains biodegradable plastic.
Embodiment two:
(1) water, trolamine, polyether glycol, silicone oil and canna starch are joined in enamel reactor and under 55 ℃ successively stir, then pour the polyphenyl polymethylene polyisocyanates high-speed stirring into, obtain finely dispersed solution;
(2) with the solution that obtains by the casting machine casting film-forming, the velocity of flow of wherein said casting machine is set to 4m/min, then will become membranous disc to put in baking oven to dry, the temperature setting of wherein said baking oven is set to 45 ℃, obtains biodegradable plastic.
Embodiment three:
(1) water, trolamine, polyether glycol, silicone oil and canna starch are joined in enamel reactor and under 65 ℃ successively stir, then pour the polyphenyl polymethylene polyisocyanates high-speed stirring into, obtain finely dispersed solution;
(2) with the solution that obtains by the casting machine casting film-forming, the velocity of flow of wherein said casting machine is set to 5m/min, then will become membranous disc to put in baking oven to dry, the temperature setting of wherein said baking oven is set to 40 ℃, obtains biodegradable plastic.
The above is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification sheets of the present invention to do, or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (4)
1. the preparation method of a biodegradable plastic, is characterized in that, comprises that step is:
(1) join successively water, trolamine, polyether glycol, silicone oil and canna starch in enamel reactor and stir, then pouring the polyphenyl polymethylene polyisocyanates high-speed stirring into, obtaining finely dispersed solution;
(2) with the solution that obtains by the casting machine casting film-forming, then will become membranous disc to put in baking oven to dry, obtain biodegradable plastic.
2. the preparation method of biodegradable plastic according to claim 1, is characterized in that, described in step (1), whipping temp is 50-70 ℃.
3. the preparation method of biodegradable plastic according to claim 1, is characterized in that, described in step (2), the velocity of flow of casting machine is set to 4-6m/min.
4. the preparation method of biodegradable plastic according to claim 1, is characterized in that, described in step (2), the temperature setting of baking oven is set to 40-55 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100735643A CN103145945A (en) | 2013-03-08 | 2013-03-08 | Preparation method of biodegradable plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100735643A CN103145945A (en) | 2013-03-08 | 2013-03-08 | Preparation method of biodegradable plastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103145945A true CN103145945A (en) | 2013-06-12 |
Family
ID=48544298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100735643A Pending CN103145945A (en) | 2013-03-08 | 2013-03-08 | Preparation method of biodegradable plastic |
Country Status (1)
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| CN (1) | CN103145945A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6258924B1 (en) * | 1994-11-15 | 2001-07-10 | Basf Aktiengesellschaft | Biodegradable polymers, the preparation thereof, and the use thereof for producing biodegradable moldings |
| CN101125912A (en) * | 2007-08-13 | 2008-02-20 | 南京红宝丽股份有限公司 | Polyurethane foam plastic prepared from barbadosnut oil |
| CN102504169A (en) * | 2011-11-03 | 2012-06-20 | 浙江温州轻工研究院 | Polyurethane foam material for soilless culture and preparation method thereof |
-
2013
- 2013-03-08 CN CN2013100735643A patent/CN103145945A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6258924B1 (en) * | 1994-11-15 | 2001-07-10 | Basf Aktiengesellschaft | Biodegradable polymers, the preparation thereof, and the use thereof for producing biodegradable moldings |
| CN101125912A (en) * | 2007-08-13 | 2008-02-20 | 南京红宝丽股份有限公司 | Polyurethane foam plastic prepared from barbadosnut oil |
| CN102504169A (en) * | 2011-11-03 | 2012-06-20 | 浙江温州轻工研究院 | Polyurethane foam material for soilless culture and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 赵婷婷: ""可生物降解聚氨酯泡沫的研究与开发"", 《可生物降解聚氨酯泡沫的研究与开发-西南科技大学硕士学位论文》, 29 July 2010 (2010-07-29), pages 17 * |
| 金灿主编: "《塑料成型设备与模具》", 31 January 2008, article ""塑料成型设备与模具"", pages: 76 * |
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Application publication date: 20130612 |