CN103937179A - Completely-biodegradable mulching film material and mulching film - Google Patents
Completely-biodegradable mulching film material and mulching film Download PDFInfo
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- CN103937179A CN103937179A CN201310019301.4A CN201310019301A CN103937179A CN 103937179 A CN103937179 A CN 103937179A CN 201310019301 A CN201310019301 A CN 201310019301A CN 103937179 A CN103937179 A CN 103937179A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/28—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture specially adapted for farming
Abstract
The invention discloses a completely-biodegradable mulching film material which contains one kind or several kinds of compounds which are selected from a group consisting of polyhydroxy alkanoates, polylactic acid, poly(butylene adipate-co-terephthalate), poly(butylene-scuccinate/adipate) and poly(butylene-scuccinate). By adopting the completely biodegradable mulching film material, the yield of crops can be greatly improved, the mulching film material can be completely biodegradable without residues of a mulching film, and the yield of crops can be continuously increased.
Description
[technical field]
The present invention relates to ground mould material, particularly fully biodegradable ground mould material.
[background technology]
Plastic mulching cultivation technology, since China's test is applied and promoted, has become an important technology of agricultural produce.But because most mulch film is polyethylene or polyvinyl chloride mulch film, its stability is high, and degradation process is quite slow, approximately takes 100 years; The fragment remaining in soil can not, by soil microbial degradation, can not be absorbed by farm crop.The particularly manufacture of ultra-thin mulch film, although can make unit surface mulch film consumption relatively reduce, cost, but mulch film is thinner, easier to be broken, the broken rear mulch film relic forming remains in earth's surface and soil but can not degrade, and brings very large difficulty to cleaning and recovery.Along with a large amount of uses of plastic film, residual to abandon the accumulation of plastic film in arable land more and more, not only affect agroecological environment, and landscape environment is also polluted, and threatening the life of livestock; In soil, form barrier layer, reduce the gas permeability of soil, hinder crop root growth and the absorption to moisture, nutrient, cause crop production reduction simultaneously.In order to address the above problem, and can realize insulation and the water retention of mulch film, developing biodegradable mulch film is essential and necessity.
Publication number is that CN102140185, name are called biodegradable mulch film and prepare the method for this mulch film, in this patent, is mainly starch with starting material, and starch water-retentivity is weaker with respect to traditional mulch film.Publication number is that CN102311630, title are fully biodegradable aliphatic acid ester carbonate mulch films and preparation method thereof, raw materials is full-biodegradable material, can play the effect that substitutes traditional mulch film, and can realize complete biodegradable, but complete biodegradable aliphatic acid ester carbonate technology is relatively immature, cost is high, and the ground film heat resistance of producing taking these starting material as main base-material is poor.
[summary of the invention]
For solving the problems of the technologies described above, the invention discloses a kind of fully biodegradable ground mould material that can continue to increase crop yield, soil is not destroyed.
Technical scheme of the present invention is as follows: a kind of fully biodegradable ground mould material, is characterized in that: described ground mould material contains PHA, poly(lactic acid) (PLA), hexane diacid-terephthalic acid-butylene terephthalate (PBAT), poly-succinic/hexanodioic acid-butanediol ester (PBSA), any one or a few mixture of poly butylene succinate (PBS).
Described ground mould material at least contains PHA, also contains one or more mixtures in poly(lactic acid), hexane diacid-terephthalic acid-butylene terephthalate, poly-succinic/hexanodioic acid-butanediol ester, poly butylene succinate simultaneously.
In described ground mould material, poly (hydroxyalkanoate) ester content is 1-99%.
Described poly (hydroxyalkanoate) ester content is 20%-99%, and in described poly(lactic acid), hexane diacid-terephthalic acid-butylene terephthalate, poly-succinic/hexanodioic acid-butanediol ester, poly butylene succinate, the content of one or more mixtures is 1%-80%.
Also contain filler, softening agent and other auxiliary agents, described poly (hydroxyalkanoate) ester content is 20%-97%, in described poly(lactic acid), hexane diacid-terephthalic acid-butylene terephthalate, poly-succinic/hexanodioic acid-butanediol ester, poly butylene succinate, the content of one or more mixtures is 1%-78%, described filler is 2-20%, softening agent is 0-15%, and other auxiliary agent is 0-5%.
Described PHA is one or more mixtures in PHB, P3HB4HB, PHBV, PHBH, PHO or P3HB4HB3HP.
Described filler is one or several mixtures in calcium carbonate, talcum powder, mica, wollastonite, silicon-dioxide, kaolin, barium sulfate, aluminium hydroxide, magnesium hydroxide.
Described softening agent is one or several blends in dioctyl terephthalate, dibutyl terephthalate, tri-n-butyl citrate, ATBC, epoxy soybean oil, polyoxyethylene glycol, polyester plasticizer, glycerine triacetate, tetramethylolmethane four oleic acid esters, pungent capric acid pentaerythritol ester, epoxy aliphatic acid methyl ester, can reduce materials processing temperature, increase materials processing temperature range, improve the consistency between different degradable materials, suitably softening agent can also improve material crystallization rate, reduces the cooling time of film in the course of processing.
Shown in other auxiliary agents be one or several in oxidation inhibitor, thermo-stabilizer, lubricant, photostabilizer, nucleator, opening agent, coupling agent.
Described oxidation inhibitor is 1010,1076,264,425,330,626,627, one or several in DSTP, DLTP; Described thermo-stabilizer is one or several in calcium zinc heat stabilizer, Zinic stearas, calcium stearate, organotin, hydrotalcite; Oxidation inhibitor and thermo-stabilizer can effectively be widened the processing temperature interval of biodegradable material, play good anti-aging, heat-resisting function.
Described lubricant be in paraffin, PE wax, oxidized petroleum wax one or several; Described nucleator is one or several in glucitols, metal carboxylate material, nano-calcium carbonate, talcum powder, and nucleator can significantly improve the degree of crystallinity of PHA, accelerates crystallization rate, improves in machine-shaping process the goods phenomenon that is clamminess.
Described opening agent is one or several in amine hydroxybenzene, erucicamide, silicone etc.
Described coupling agent is one or several in silane coupling agent, titanate coupling agent, aluminate coupling agent, can effectively improve the consistency of filler and polymkeric substance, reduces interface noted phase separation phenomena.
The invention also discloses the mulch film that utilizes above-mentioned ground mould material to prepare.
Beneficial effect of the present invention is: complete biodegradable mulch film disclosed by the invention improves crop yield significantly to be wanted, can realize complete biodegradable, can not cause the residual of mulch film, do not destroy soil structure, do not affect plant and absorb moisture and nutrient, can continue to increase crop yield, reduce white pollution.
[embodiment]
Describe the present invention below in conjunction with specific embodiment.
Embodiment 1:
By 60% P3HB4HB (12%4HB), 30% PLA, 5% tri-n-butyl citrate, 5% Zinic stearas, weigh to put in high-speed mixer and stir 5min, then drop into granulation in twin screw extruder, with mulch film machine blown film.
Embodiment 2:
70% PHBV (12%HV), 10% PLA, 10% calcium carbonate, 5% tri-n-butyl citrate, 5% paraffin are weighed to put in high-speed mixer and stir 5min, then drop into granulation in twin screw extruder.
Embodiment 3:
By 80% PHBH, (15%4HB, 10% PBAT, 8% epoxy soybean oil, 2% talcum powder weigh to put in high-speed mixer and stir 5min, then drop into granulation in twin screw extruder, with mulch film machine blown film.
Embodiment 4:
80% P3HB4HB (12%4HB), 10% PBAT, 10%PLA are weighed to put in high-speed mixer and stir 5min, then drop into granulation in twin screw extruder.
Embodiment 5:
By 60% PBAT, 30% PLA, 7% polyoxyethylene glycol, 3% organotin weighs to put in high-speed mixer and stirs 5min, then drops into granulation in twin screw extruder, with mulch film machine blown film.
Embodiment 6:
40% P3HB4HB (12%4HB), 30% PLA, 20% PBSA, 10% calcium carbonate are weighed to put in high-speed mixer and stir 5min, then drop into granulation in twin screw extruder, with mulch film machine blown film.
Embodiment 8:
By 30% PHO, 50% PLA, 20% PBS, weighs to put in high-speed mixer and stirs 5min, then drops into granulation in twin screw extruder.
Film prepared by above-described embodiment 1-8 carries out crop film-coating test, and result shows that crop yield is increased dramatically, and the mulch film crop yield deduction that particularly contains PHA is more obvious.Prove mulch film of the present invention not only have heat, preserve soil moisture, effect that short seedling is early sent out, its degradation characteristic can also regulate soil local air humidity and nutrient to change simultaneously, realize the indirect control to crop growthing development process, nourishing and growing of farm crop coordinated more with reproductive growth, thereby increase substantially yield per unit.And be embedded in the film fully biodegradable at normal temperatures in soil, and to soil non-secondary pollution, can be as the residual soil compaction that causes of traditional petroleum base mulch film, spoiled soil environment.
In sum; although the present invention have been described in detail the present invention by embodiment; but persons skilled in the art should be understood that; above-described embodiment is only the description to the preferred embodiments of the present invention; but not limiting the scope of the invention; persons skilled in the art are in the disclosed technical scope of the present invention, and the variation that can expect easily, all within protection scope of the present invention.
Claims (11)
1. a fully biodegradable ground mould material, is characterized in that: described ground mould material contains PHA, poly(lactic acid), hexane diacid-terephthalic acid-butylene terephthalate, poly-succinic/hexanodioic acid-butanediol ester, any one or a few mixture of poly butylene succinate.
2. fully biodegradable as claimed in claim 1 ground mould material, it is characterized in that: described ground mould material at least contains PHA, and one or more mixtures in poly(lactic acid), hexane diacid-terephthalic acid-butylene terephthalate, poly-succinic/hexanodioic acid-butanediol ester, poly butylene succinate.
3. fully biodegradable as claimed in claim 2 ground mould material, is characterized in that: in described ground mould material, poly (hydroxyalkanoate) ester content is 1-99%.
4. fully biodegradable as claimed in claim 3 ground mould material, it is characterized in that: described poly (hydroxyalkanoate) ester content is 20%-99%, in described poly(lactic acid), hexane diacid-terephthalic acid-butylene terephthalate, poly-succinic/hexanodioic acid-butanediol ester, poly butylene succinate, the content of one or more mixtures is 1%-80%.
5. fully biodegradable as claimed in claim 4 ground mould material, it is characterized in that: also contain filler, softening agent and other auxiliary agents, described poly (hydroxyalkanoate) ester content is 20%-97%, in described poly(lactic acid), hexane diacid-terephthalic acid-butylene terephthalate, poly-succinic/hexanodioic acid-butanediol ester, poly butylene succinate, the content of one or more mixtures is 1%-78%, described filler is 2-20%, softening agent is 0-15%, and other auxiliary agent is 0-5%.
6. fully biodegradable as claimed in claim 1 ground mould material, is characterized in that: described PHA is one or more mixtures in PHB, P3HB4HB, PHBV, PHBH, PHO or P3HB4HB3HP.
7. fully biodegradable as claimed in claim 5 ground mould material, is characterized in that: described filler is one or several mixtures in calcium carbonate, talcum powder, mica, wollastonite, silicon-dioxide, kaolin, barium sulfate, aluminium hydroxide, magnesium hydroxide.
8. fully biodegradable as claimed in claim 5 ground mould material, is characterized in that: described softening agent is one or several blends in dioctyl terephthalate, dibutyl terephthalate, tri-n-butyl citrate, ATBC, epoxy soybean oil, polyoxyethylene glycol, polyester plasticizer, glycerine triacetate, tetramethylolmethane four oleic acid esters, pungent capric acid pentaerythritol ester, epoxy aliphatic acid methyl ester.
9. fully biodegradable as claimed in claim 5 ground mould material, is characterized in that: shown in other auxiliary agents be one or several in oxidation inhibitor, thermo-stabilizer, lubricant, photostabilizer, nucleator, opening agent, coupling agent.
10. fully biodegradable as claimed in claim 9 ground mould material, is characterized in that: described oxidation inhibitor is 1010,1076,264,425,330,626,627, one or several in DSTP, DLTP; Described thermo-stabilizer is one or several in calcium zinc heat stabilizer, Zinic stearas, calcium stearate, organotin, hydrotalcite; Described lubricant be in paraffin, PE wax, oxidized petroleum wax one or several; Described nucleator is one or several in glucitols, metal carboxylate material, nano-calcium carbonate, talcum powder; Described opening agent is one or several in amine hydroxybenzene, erucicamide, silicone etc.; Described coupling agent is one or several in silane coupling agent, titanate coupling agent, aluminate coupling agent.
11. 1 kinds of mulch films that utilize the ground mould material of claim 1 to prepare.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310019301.4A CN103937179A (en) | 2013-01-17 | 2013-01-17 | Completely-biodegradable mulching film material and mulching film |
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| CN201310019301.4A CN103937179A (en) | 2013-01-17 | 2013-01-17 | Completely-biodegradable mulching film material and mulching film |
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| CN103937179A true CN103937179A (en) | 2014-07-23 |
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| CN105623214A (en) * | 2016-01-13 | 2016-06-01 | 广州市海珥玛植物油脂有限公司 | Plasticized biodegradable polyester film and preparation method thereof |
| CN106084700A (en) * | 2016-08-17 | 2016-11-09 | 云南天禾地生物科技股份有限公司 | A kind of low cost controllable full-biodegradable mulch film and preparation method thereof |
| CN106496960A (en) * | 2015-09-08 | 2017-03-15 | 吴大智 | The full biology controlled degradation of Nicotiana tabacum L. weeding, insect prevention is mulching specially used |
| CN106496959A (en) * | 2015-09-08 | 2017-03-15 | 吴大智 | Crops controlled degradation Pesticidal and sterilizing weeding whole life cycle design |
| CN106883488A (en) * | 2017-03-15 | 2017-06-23 | 山西骏博环保科技有限公司 | Enhanced full-biodegradable material and preparation method thereof |
| CN107083028A (en) * | 2017-05-19 | 2017-08-22 | 刘文军 | A kind of biodegradation material and preparation method thereof |
| CN107148876A (en) * | 2017-04-25 | 2017-09-12 | 安徽恒鑫环保新材料有限公司 | It is a kind of can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing |
| CN107266876A (en) * | 2017-07-07 | 2017-10-20 | 深圳市绿自然生物降解科技有限公司 | A kind of functional living being degradative plastic film and preparation method and application |
| CN107360909A (en) * | 2017-07-27 | 2017-11-21 | 郑州市植保植检站 | A kind of buried punching water-saving fertilizer-saving method of degradable mulch |
| CN107709457A (en) * | 2015-06-12 | 2018-02-16 | 卡比奥斯公司 | biodegradable polyester composition and application thereof |
| CN107903598A (en) * | 2017-12-03 | 2018-04-13 | 山东天野生物降解新材料科技有限公司 | Drug resistance whole life cycle design composition and preparation method thereof |
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| CN108485207A (en) * | 2018-02-13 | 2018-09-04 | 南京工业大学 | A kind of degradable mulch and preparation method thereof with slow-release phosphate fertilizer |
| CN108624011A (en) * | 2017-03-15 | 2018-10-09 | 深圳市意可曼生物科技有限公司 | A kind of fully-biodegradable film and preparation method thereof for waterless toilet |
| CN108624012A (en) * | 2017-03-15 | 2018-10-09 | 深圳市意可曼生物科技有限公司 | A kind of fully-biodegradable film and its preparation method and application |
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| CN109694557A (en) * | 2018-12-20 | 2019-04-30 | 上海昶法新材料有限公司 | A kind of degradable cover film and preparation method thereof for refuse landfill |
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| CN110028628A (en) * | 2019-04-02 | 2019-07-19 | 苏州海晨塑胶有限公司 | A kind of degradable poly ester material and preparation method thereof |
| CN112210144A (en) * | 2020-09-11 | 2021-01-12 | 青铜峡市华龙塑料工业有限责任公司 | Anti-condensation special light-transmission mulching film |
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Application publication date: 20140723 |