CN104725890A - Degradable composite film prepared by utilizing waste plastic as well as preparation method and application thereof - Google Patents
Degradable composite film prepared by utilizing waste plastic as well as preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses a degradable composite film prepared by utilizing waste plastic as well as a preparation method and application thereof and belongs to the field of composite films. The degradable composite film comprises the following components in parts by weight: 15-25 parts of illite powder, 3-8 parts of organic macromolecule polymer, 30-40 parts of waste plastic, 5-15 parts of straw powder, 3-5 parts of starch and 5-20 parts of polylactic acid. The composite film prepared from the components has high strength and also has good biodegradability; meanwhile, a large amount of illite powder and waste plastic are adopted, so that cost is low, and the composite film can be widely applied to preparation of various storage bags such as garbage bags and packaging bags and has high economic adaptability.
Description
Technical field
The present invention relates to laminated film field, particularly a kind of degradable laminated film utilizing waste or used plastics to prepare and its preparation method and application.
Background technology
Laminated film plays an important role in daily life, and it can be used for preparing food pack, shopping bag, mulch film, refuse bag etc.But along with the use of laminated film is more and more frequent, its white pollution brought also is on the rise.In order to alleviate white pollution, people can make plastics carry out the composition of degrading, such as starch, calcium carbonate etc. by adding some in the raw material of laminated film, prepare degradable combination film.
For example, CN104151686A provides a kind of degradable laminated film, its component and parts by weight are: W-Gum 40-60 part, Low Density Polyethylene 100 parts, polycarbonate 10-20 part, ethylene-butylene polymer 12-15 part, polyethylene wax 5-10 part, oxidation inhibitor 2-4 part, UV light absorber 0.5-1 part, cedar(wood)oil 4.5-6.5 part.
Contriver finds that prior art at least exists following problem:
The cost of the degradable laminated film that prior art provides is higher.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, degradable laminated film utilizing waste or used plastics to prepare providing a kind of low cost and its preparation method and application.Concrete technical scheme is as follows:
First aspect, embodiments provide a kind of degradable laminated film utilizing waste or used plastics to prepare, comprise the component of following weight part: Erie stone flour 15-25 part, organic high molecular polymer 3-8 part, waste or used plastics 30-40 part, straw powder 5-15 part, starch 3-5 part, poly(lactic acid) 5-20 part.
As preferably, described laminated film also comprises the component of following weight part: the oxidation inhibitor of 2-4 part, the trace mineral supplement of 1-3 part.
Particularly, described starch is treated starch.
Particularly, described starch is selected from least one in W-Gum, sweet potato starch, tapioca (flour), konjak starch.
Particularly, described organic high molecular polymer is selected from least one in polypropylene, polyethylene, polyethylene terephthalate, polystyrene.
Particularly, as preferably, described Erie stone flour comprises the white mica that massfraction is at least 50%.
As preferably, described Erie stone flour comprises the composition of following mass percentage: the SiO of 64.28%-72%
2, 12.80%-16.30% A1
2o
3, 0.61%-1.95% the K of MgO, 3.61%-5.21%
2the Na of O, 1.92%-3.98%
2the TiO of CaO, 0.39%-0.94% of O, 3.20%-5.08%
2, 1.95%-4.79% Fe
2o
3.
Second aspect, embodiments provide a kind of preparation method of above-mentioned laminated film, comprise: according to the weight of component each in laminated film, Erie's stone flour, organic high molecular polymer, waste or used plastics, straw powder, poly(lactic acid), starch and optional oxidation inhibitor and trace mineral supplement are mixed in proportion, melt pelletization, then through extrusion shaping machine blow molding, laminated film is prepared.
As preferably, the order number of described Erie stone flour is 800-2000 order; The order number of described straw powder is 800-2000 order.
As preferably, described in the process of extrusion shaping machine blow molding, the head temperature of described extrusion shaping machine is 190-200 DEG C; Barrel zone temperature is divided into 3rd district, is respectively 1 district 150-170 DEG C, 2 district 170-180 DEG C, 3 district 190-200 DEG C.
The third aspect, embodiments provides a kind of above-mentioned laminated film and is preparing the application in refuse bag and packing bag.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
The laminated film that the embodiment of the present invention provides, comprises the component of following weight part: Erie stone flour 15-25 part, organic high molecular polymer 3-8 part, waste or used plastics 30-40 part, straw powder 5-15 part, poly(lactic acid) 5-20 part, starch 3-5 part.The laminated film prepared by above-mentioned each component is not only had high strength and has good biological degradability.And owing to have employed a large amount of Erie's stone flours and waste or used plastics, it is with low cost, can be widely used for preparing in the various pouch such as refuse bag or packing bag, there is higher economic adaptability.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below embodiment of the present invention is described further in detail.
First aspect, embodiments provide a kind of degradable combination film, comprise the component of following weight part: Erie stone flour 15-25 part, organic high molecular polymer 3-8 part, waste or used plastics 30-40 part, straw powder 5-15 part, starch 3-5 part, poly(lactic acid) 5-20 part.
The laminated film of said components that what the embodiment of the present invention provided comprise, by the collaborative complex role of above each component, prepared laminated film has good biological degradability.And, owing to have employed a large amount of Erie's stone flours and waste or used plastics as raw material, make the with low cost of this laminated film, refuse bag etc. can be widely used in in the not high pouch of hygienic requirements.Particularly, the laminated film that the embodiment of the present invention provides, due to wherein containing straw powder, starch and Erie's stone flour, makes its more readily biodegradable.After the degraded of this laminated film, straw powder wherein, starch and Erie's stone flour all can be used as the nutritive ingredient in soil, promote growing of plant.In addition, it will be appreciated by those skilled in the art that be, by the organic high molecular polymer of above-mentioned content and adding of waste or used plastics, intensity and the elasticity of prepared laminated film expectation can be given.
Specifically, owing to containing a large amount of Erie's stone flours in the degradable laminated film that the embodiment of the present invention provides, on the one hand, Erie's stone flour is cheap, is more conducive to the cost reducing this laminated film.On the other hand, Erie's stone flour safety non-toxic, environmental protection more, and it can not only provide plant-growth necessary nutritive element after laminated film degraded (degradation time is 2-10 month), the normal growth being beneficial to plant is grown, and can also adsorb the heavy metal (such as chromium, lead, caesium etc.) in soil, control soil compaction and secondary pollution, improve plant to the absorption of useful mineral element and utilization, effectively improve Soil structure.And impose in soil after the degraded of this laminated film, Erie's stone flour wherein can give soil good heat retaining property, effectively promotes growing of plant, improves output.
Particularly, above-mentioned organic high molecular polymer is selected from least one in polypropylene, polyethylene, polyethylene terephthalate, polystyrene, preferably polyethylene.
Particularly, " poly(lactic acid) " described in the embodiment of the present invention by use in reproducible plant resources (as corn) the starch that extracts prepare, wherein starch obtains glucose via saccharification, make highly purified lactic acid by glucose and certain strain fermentation again, then synthesize the poly(lactic acid) of certain molecular weight by chemical synthesis process.Prepared poly(lactic acid) has good biodegradability, can be degradable by occurring in nature microorganism after using, final generation carbonic acid gas and water, nontoxic, free from environmental pollution.Add the fast degradation that can realize laminated film by particles of polylactic acid in the embodiment of the present invention, and provide nutritive ingredient to promote growing of crop further after its degraded.For example, this poly(lactic acid) can be the common commercially available particulate state polylactic acid raw material in this area, such as Pinghu City gold autumn Trade Co., Ltd.'s poly(lactic acid) of selling, or the transparent poly(lactic acid) PAL raw material of 2003D that U.S. NatureWork sells, or other.
Further, in order to improve the barrier of this laminated film and more trace element can be supplemented for soil after the degraded of this laminated film.This laminated film also comprises the component of following weight part: the oxidation inhibitor of 2-4 part, the trace mineral supplement of 1-3 part.Be understandable that, above-mentioned " oxidation inhibitor ", " trace mineral supplement " are the state of the art, and such as they can be common commercially available prod.
Further, some common additives for plasticss can also be added in this laminated film, such as photosensitive accelerant and degradation of promoter, and tinting material etc., to improve degradation property and the visuality of this laminated film.
From the above, the embodiment of the present invention additionally provides a kind of laminated film with optimum ratio, and it comprises the component of following weight part: Erie stone flour 15-25 part, polyethylene 5-8 part, waste or used plastics 35-40 part, straw powder 5-15 part, starch 4-5 part, poly(lactic acid) 5-20 part, the oxidation inhibitor of 2-3 part, the trace mineral supplement of 2-3 part.More preferably, this laminated film comprises the component of following weight part: Erie's stone flour 20 parts, polyethylene 7 parts, waste or used plastics 38 parts, straw powder 10 parts, starch 4.5 parts, poly(lactic acid) 15 parts, the oxidation inhibitor of 2.5 parts and the trace mineral supplement of 2.5 parts.
Particularly, above-mentioned starch can be treated starch, also can be selected from least one in W-Gum, sweet potato starch, tapioca (flour), konjak starch.Wherein, treated starch can be common commercially available prod, this area.By selecting the starch of mentioned kind, the cost of laminated film can not only be reduced, and be beneficial to the biological degradability improving this laminated film.
Particularly, Erie's stone flour used in the embodiment of the present invention comprises the white mica that massfraction is at least 50%.More specifically, this Erie's stone flour comprises the composition of following mass percentage: the SiO of 64.28%-72%
2, 12.80%-16.30% A1
2o
3, 0.61%-1.95% the K of MgO, 3.61%-5.21%
2the Na of O, 1.92%-3.98%
2the TiO of CaO, 0.39%-0.94% of O, 3.20%-5.08%
2, 1.95%-4.79% Fe
2o
3.There is illite that mentioned component limits there is on the one hand good heat insulation, insulating property and chemical stability, effectively can improve the performance of laminated film.In addition, Erie's stone flour of this constituents is more prone to degraded, can be used as long-acting base fertilizer and soil improvement agent, be beneficial to and improve ground temperature and chessom at low temperatures, thus improve Soil structure, be more conducive to growing of plant after its degraded.
Second aspect, embodiments provide a kind of preparation method of above-mentioned laminated film, comprise: according to the weight of component each in laminated film, Erie's stone flour, organic high molecular polymer, waste or used plastics, straw powder, poly(lactic acid), starch and optional oxidation inhibitor and trace mineral supplement are mixed in proportion, melt pelletization, then through extrusion shaping machine blow molding, laminated film is prepared.
It will be understood by those skilled in the art that, above-mentioned " Erie's stone flour, organic high molecular polymer, waste or used plastics, straw powder, poly(lactic acid), starch and optional oxidation inhibitor and trace mineral supplement being mixed in proportion " referring to can by configuration proportion, Erie's stone flour, organic high molecular polymer, waste or used plastics, straw powder, poly(lactic acid), starch are mixed, prepares laminated film in this, as raw material.Or according to configuration proportion, Erie's stone flour, organic high molecular polymer, waste or used plastics, straw powder, poly(lactic acid), starch, oxidation inhibitor and trace mineral supplement can also be mixed, and prepare laminated film in this, as raw material.
As preferably, in this laminated film, the order number of Erie's stone flour is 800-2000 order; The order number of straw powder is 800-2000 order.By above-mentioned each component is defined as specific order number, the preparation technology of this laminated film can not only be simplified, and prepared film feel can be made more smooth.For example, the order number of this Erie's stone flour can be 850 orders, 900 orders, 950 orders etc.; The order number of straw powder can be 850 orders, 900 orders, 950 orders etc.And selected polyethylene and waste or used plastics can be all common injection grade feed particulate material.
Wherein, in the process preparing laminated film, above-mentioned " melt pelletization, then through extrusion shaping machine blow molding " is the common prior art in this area, and the embodiment of the present invention does not do concrete restriction to it at this.
Further, in order to improve the performance of prepared laminated film, above-mentioned in the process of extrusion shaping machine blow molding, the head temperature controlling extrusion shaping machine is 190-200 DEG C; Barrel zone temperature is divided into 3rd district, is respectively 1 district 150-170 DEG C, 2 district 170-180 DEG C, 3 district 190-200 DEG C.
The third aspect, embodiments provides above-mentioned laminated film and is preparing the application in refuse bag.The laminated film that the embodiment of the present invention provides, because it is with low cost, biological degradability is high and intensity is suitable for, is applicable to the preparation of all kinds of packing bag not high to hygienic requirements, such as, is particularly suited for for preparing refuse bag.
Particularly, the embodiment of the present invention does not do concrete restriction to the thickness of prepared laminated film, and for example, according to practical application request, it can be 0.02-1mm (such as 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm etc.).
Below further the present invention will be described by specific embodiment.
In following specific embodiment, the unreceipted condition person of involved operation, the condition of all conveniently condition or manufacturers's suggestion is carried out.Raw materials used unreceipted production firm and specification person are can by the conventional products of commercial acquisition.
Wherein, the polyethylene particle used in embodiment 1-3 is all purchased from Zibo Chao Yu Trade Co., Ltd., and its model is the high pressure polyethylene particle of Shandong 2100TN00.
The particles of polylactic acid used in embodiment 1-4 for the gauge number that U.S. NatureWork sells be the transparent poly(lactic acid) PAL raw material of 2003D.
Embodiment 1
Present embodiments provide a kind of degradable combination film, it comprises the component of following weight part: Erie's stone flour 20 parts, polyethylene 6 parts, waste or used plastics 38 parts, straw powder 15 parts, W-Gum 4.5 parts, poly(lactic acid) 5 parts.
Wherein, above-mentioned Erie stone flour comprises 60% (massfraction) white mica.This Erie's stone flour at least comprises the composition of following mass percentage: the SiO of 66%
2, 14.1% A1
2o
3, 1.2% the K of MgO, 3.61%-5.21%
2the Na of O, 1.92%-3.98%
2the TiO of CaO, 0.39%-0.94% of O, 3.20%-5.08%
2and the Fe of 1.95%-4.79%
2o
3.
The preparation method of this laminated film is as follows: Erie's stone flour (order number is 900 orders), polyethylene particle, straw powder (order number is 900 orders), W-Gum, particles of polylactic acid and waste or used plastics particle are mixed according to the above ratio, melt pelletization, then through extrusion shaping machine blow molding, laminated film is prepared.Wherein, in the process of blow molding, the head temperature controlling extrusion shaping machine is 194 DEG C; Barrel zone temperature is divided into 3rd district, is respectively 160 DEG C, 1st district, 2 175 DEG C, districts, 3 195 DEG C, districts.
Refuse bag prepared by the laminated film utilizing the present embodiment to prepare, and the mechanical property of this refuse bag meets service requirements, its after the standard drop test of this area without disrepair phenomenon.The biological degradability of prepared refuse bag is better, and degradation time is shorter, and after carrying out degradation treatment to it, when degradation time is 9 months, its degradation rate can reach 99%.
Embodiment 2
Present embodiments provide a kind of degradable combination film, it comprises the component of following weight part: Erie's stone flour 25 parts, polyethylene 5 parts, waste or used plastics 40 parts, straw powder 13 parts, tapioca (flour) 5 parts, poly(lactic acid) 15 parts.
Wherein, above-mentioned Erie stone flour comprises 56% (massfraction) white mica.This Erie's stone flour at least comprises the composition of following mass percentage: the SiO of 65%
2, 15% A1
2o
3, the MgO of 1.2%, the K of 4.2%
2o, 2% Na
2o, the CaO of 4.5%, the TiO of 0.64%
2and the Fe of 3.79%
2o
3.
The preparation method of this laminated film is as follows: just Erie's stone flour (order number is 800 orders), polyethylene particle, straw powder (order number is 950 orders), tapioca (flour), particles of polylactic acid and waste or used plastics particle mix according to the above ratio, melt pelletization, then through extrusion shaping machine blow molding, laminated film is prepared.Wherein, in the process of blow molding, the head temperature controlling extrusion shaping machine is 197 DEG C; Barrel zone temperature is divided into 3rd district, is respectively 170 DEG C, 1st district, 2 178 DEG C, districts, 3 197 DEG C, districts.
Refuse bag prepared by the laminated film utilizing the present embodiment to prepare, and the mechanical property of this refuse bag meets service requirements, its after the standard drop test of this area without disrepair phenomenon.The biological degradability of this refuse bag is better, and degradation time is shorter, and after carrying out degradation treatment to it, when degradation time is 9 months, its degradation rate can reach 99.3%.
Embodiment 3
Present embodiments provide a kind of degradable combination film, it comprises the component of following weight part: Erie's stone flour 23 parts, polyethylene 7 parts, waste or used plastics 36 parts, straw powder 10 parts, tapioca (flour) 3.5 parts, poly(lactic acid) 20 parts, 2 parts, oxidation inhibitor, 3 parts, ferric sulfate.
Wherein, above-mentioned Erie stone flour comprises 55% (massfraction) white mica.This Erie's stone flour at least comprises the composition of following mass percentage: the SiO of 64.28%
2, 16.30% A1
2o
3, the MgO of 0.61%, the K of 5.21%
2o, 1.92% Na
2o, the CaO of 5.08%, the TiO of 0.39%
2and the Fe of 4.79%
2o
3.
The preparation method of this laminated film is as follows: Erie's stone flour (order number is 950 orders), polyethylene particle, straw powder (order number is 1000 orders), tapioca (flour), particles of polylactic acid, waste or used plastics particle, oxidation inhibitor and ferric sulfate are mixed according to the above ratio, melt pelletization, then through extrusion shaping machine blow molding, laminated film is prepared.Wherein, in the process of blow molding, the head temperature controlling extrusion shaping machine is 200 DEG C; Barrel zone temperature is divided into 3rd district, is respectively 150 DEG C, 1st district, 2 180 DEG C, districts, 3 200 DEG C, districts.
Refuse bag prepared by the laminated film utilizing the present embodiment to prepare, and the mechanical property of this refuse bag meets service requirements, its after the standard drop test of this area without disrepair phenomenon.The biological degradability of prepared refuse bag is better, and degradation time is shorter, and after carrying out degradation treatment to it, when degradation time is 10 months, its degradation rate can reach 99.8%.
Embodiment 4
Present embodiments provide a kind of degradable combination film, it comprises the component of following weight part: 2 parts, the mixture (wherein, the ratio of zinc oxide and selenium oxide is 1:1) of Erie's stone flour 15 parts, polypropylene 8 parts, waste or used plastics 35 parts, straw powder 5 parts, W-Gum 3 parts, poly(lactic acid) 17 parts, 4 parts, oxidation inhibitor, zinc oxide and selenium oxide.
Wherein, above-mentioned Erie stone flour comprises 50% (massfraction) white mica.This Erie's stone flour at least comprises the composition of following mass percentage: the SiO of 72%
2, 16.30% A1
2o
3, the MgO of 1.95%, the K of 3.61%
2o, 3.98% Na
2o, the CaO of 3.20%, the TiO of 0.94%
2and the Fe of 1.95%
2o
3.
The preparation method of this laminated film is as follows: mixed according to the above ratio by the mixture of Erie's stone flour (order number is 1000 orders), polyethylene, straw powder (order number is 800 orders), W-Gum, particles of polylactic acid, waste or used plastics particle, oxidation inhibitor and zinc oxide and selenium oxide, melt pelletization, then through extrusion shaping machine blow molding, laminated film is prepared.Wherein, in the process of blow molding, the head temperature controlling extrusion shaping machine is 190 DEG C; Barrel zone temperature is divided into 3rd district, is respectively 165 DEG C, 1st district, 2 170 DEG C, districts, 3 190 DEG C, districts.
Refuse bag prepared by the laminated film utilizing the present embodiment to prepare, and the mechanical property of this refuse bag meets service requirements, its after the standard drop test of this area without disrepair phenomenon.The biological degradability of prepared refuse bag is better, and degradation time is shorter, and after carrying out degradation treatment to it, when degradation time is 10 months, its degradation rate can reach 99%.
The foregoing is only preferred embodiment of the present invention, not in order to limit the scope of the invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. utilize degradable laminated film prepared by waste or used plastics, comprise the component of following weight part: Erie stone flour 15-25 part, organic high molecular polymer 3-8 part, waste or used plastics 30-40 part, straw powder 5-15 part, poly(lactic acid) 5-20 part, starch 3-5 part.
2. laminated film according to claim 1, is characterized in that, described laminated film also comprises the component of following weight part: the oxidation inhibitor of 2-4 part, the trace mineral supplement of 1-3 part.
3. laminated film according to claim 2, is characterized in that, described starch is treated starch.
4. laminated film according to claim 2, is characterized in that, described starch is selected from least one in W-Gum, sweet potato starch, tapioca (flour), konjak starch.
5. laminated film according to claim 2, is characterized in that, described organic high molecular polymer is selected from least one in polypropylene, polyethylene, polyethylene terephthalate, polystyrene.
6. the laminated film according to any one of claim 1-5, is characterized in that, described Erie stone flour comprises the white mica that massfraction is at least 50%.
7. laminated film according to claim 6, is characterized in that, described Erie stone flour comprises the composition of following mass percentage: the SiO of 64.28%-72%
2, 12.80%-16.30% A1
2o
3, 0.61%-1.95% the K of MgO, 3.61%-5.21%
2the Na of O, 1.92%-3.98%
2the TiO of CaO, 0.39%-0.94% of O, 3.20%-5.08%
2, 1.95%-4.79% Fe
2o
3.
8. the preparation method of the laminated film described in any one of claim 1-7, comprise: according to the weight of component each in laminated film, Erie's stone flour, organic high molecular polymer, waste or used plastics, straw powder, poly(lactic acid), starch and optional oxidation inhibitor and trace mineral supplement are mixed in proportion, melt pelletization, then through extrusion shaping machine blow molding, laminated film is prepared.
9. method according to claim 8, is characterized in that, described in the process of extrusion shaping machine blow molding, the head temperature of described extrusion shaping machine is 190-200 DEG C; Barrel zone temperature is divided into 3rd district, is respectively 1 district 150-170 DEG C, 2 district 170-180 DEG C, 3 district 190-200 DEG C.
10. the application in refuse bag and packing bag prepared by the laminated film described in any one of claim 1-7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111619054A (en) * | 2020-06-03 | 2020-09-04 | 承德人和矿业有限责任公司 | Degradable agricultural film and preparation method thereof |
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| CN101993558A (en) * | 2009-08-09 | 2011-03-30 | 陈天云 | Thin film produced by using starch fiber waste plastic |
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2015
- 2015-03-18 CN CN201510119608.0A patent/CN104725890A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993558A (en) * | 2009-08-09 | 2011-03-30 | 陈天云 | Thin film produced by using starch fiber waste plastic |
Non-Patent Citations (1)
| Title |
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| 化学工业出版社: "《中国化工产品大全（第三版）（上卷）》", 31 January 2005 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111619054A (en) * | 2020-06-03 | 2020-09-04 | 承德人和矿业有限责任公司 | Degradable agricultural film and preparation method thereof |
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