CN103665784A - Novel controllable biodegradable agricultural mulching film - Google Patents
Novel controllable biodegradable agricultural mulching film Download PDFInfo
- Publication number
- CN103665784A CN103665784A CN201310615660.6A CN201310615660A CN103665784A CN 103665784 A CN103665784 A CN 103665784A CN 201310615660 A CN201310615660 A CN 201310615660A CN 103665784 A CN103665784 A CN 103665784A
- Authority
- CN
- China
- Prior art keywords
- acid
- agricultural mulching
- poly
- aliphatic
- masterbatch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
Landscapes
- Biological Depolymerization Polymers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a novel controllable biodegradable agricultural mulching film. Raw materials comprise an aliphatic-aromatic polyester copolymer, polylactic acid, a starch-based biodegradable material and a compatibilizer; and the controllability of biodegradation is realized through addition of a light stabilizer, a heat stabilizer or a heat oxidative degradation accelerator and a catalyst. According to the novel controllable biodegradable agricultural mulching film, the functional optimization of the mulching film is realized through a preferred degradable material formula, the controllability of biodegradation is improved remarkably, needs of crops for temperatures, moisture, ventilation and the like at different growth stages are met, and the mulching film has dynamic and multi-directional adjustment functions.
Description
Technical field
The present invention relates to Material Field, particularly a kind of novel controllable biodegradable agricultural mulching.
Background technology
There are two outstanding problems in common polythene mulch film, and the one, difficult degradation, easily causes white pollution, affects soil quality, even affects output.The 2nd, its raw material petroleum resources are limited.And bio-based degradable plastics poly(lactic acid) (Poly Lactic Acid, PLA) can be biodegradable into CO under the condition of water oxygen appropriateness
2and H
2o, and the raw material of PLA mainly comes from corn.The discovery of PLA and development have solved the above-mentioned two problems that common polythene runs into, and in Agro-film Industry application scale, constantly expand in recent years.
PLA has good mechanical property as having higher intensity, however the shortcoming such as flexible is poor, resistance to impact shock is lower.Biodegradable material aliphatic-aromatic polyester has good toughness and elongation at break, is commonly used to improve with PLA blend toughness and the elongation at break of PLA.Yet its blend uncompatibility has hindered the performance of its resulting materials.Patent (publication No.: CN102660008A) provide the production method of a kind of aliphatic-aromatic copolyester and PLA segmented copolymer, for its application provides condition.But, starch-base biodegradation material direct formation of film at surface, stationary phase is shorter, and degraded early, soon, is unfavorable for crop heat and moisture preserving in mid-term, easily reduces output.
Summary of the invention
The object of this invention is to provide a kind of novel controllable biodegradable agricultural mulching, there is suitable stationary phase and degradative phase, be conducive to crop heat and moisture preserving in mid-term, and then improve output.
For achieving the above object, the present invention adopts following technical scheme:
A kind of novel controllable biodegradable agricultural mulching, its starting material comprise aliphatic-aromatic polyester copolymer, poly(lactic acid), starch-base biodegradation material and expanding material, count by weight, aliphatic-aromatic polyester copolymer is 20-80 part, poly(lactic acid) is 20-80 part, starch-base biodegradation material is 4-15 part, and expanding material is 0.5-5 part.
Further, a kind of novel controllable biodegradable agricultural mulching, aliphatic-aromatic polyester copolymer is that 80 parts, poly(lactic acid) are that 20 parts, starch-base biodegradation material are 5 parts.
Further, a kind of novel controllable biodegradable agricultural mulching, by weight, its starting material can comprise thermooxidative degradation promotor 5-30 part, catalyzer 0.1-1 part.
Further, a kind of novel controllable biodegradable agricultural mulching, its starting material also can comprise photostabilizer 0.1-0.5 part, thermo-stabilizer 0.1-0.5 part.
Further, a novel controllable biodegradable agricultural mulching, described aliphatic-aromatic polyester copolymer is one or more in poly-hexanodioic acid/butylene terephthalate PBAT, poly-hexanodioic acid/terephthalic acid fourth four ester PTMAT, poly-succsinic acid/mutual-phenenyl two acid bromide two alcohol ester PETS, poly-succsinic acid/carbonic acid butanediol ester PBSC and poly-succinic acid-butanediol-/mutual-phenenyl two acid bromide two alcohol ester PBST.
Further, a novel controllable biodegradable agricultural mulching, described expanding material is maleic anhydride, acrylic acid modified polylactic acid low polymer, fatty acid monomer glyceryl ester or epoxy rubber, glycidyl acrylate, Zelan 338 grafted polyethylene or other graft polyolefins.
Further, a kind of novel controllable biodegradable agricultural mulching, its starting material also comprise CO
2multipolymer 2-30 part.
Novel controllable biodegradable agricultural mulching provided by the present invention, by preferential degradable material formula, realize the optimization of mulch film function, and significantly improved biodegradable controllability, meet crop different growth stage to temperature, moisture, ventilative etc. needs, there is dynamic, multidirectional regulatory function.In addition, although the raw materials used degradation cycle of the present invention is different, be Biodegradable Materials, finally realize degradablely, reduce environmental pollution, there is good ecological benefits and economic benefit.
Accompanying drawing explanation
The complete processing schematic diagram of Fig. 1 one embodiment of the present invention.
Description of reference numerals: 1 full-biodegradable material A, 2 full-biodegradable material B, 3 expanding materials, 4 thermo-stabilizers, 5 photostabilizers, 6 thermooxidative degradation promotor, 7 catalyzer, 8 masterbatch, 9 finished products.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
A kind of novel controllable biodegradable agricultural mulching, its starting material comprise aliphatic-aromatic polyester copolymer, poly(lactic acid), starch-base biodegradation material and expanding material, count by weight, aliphatic-aromatic polyester copolymer is 20-80 part, poly(lactic acid) is 20-80 part, starch-base biodegradation material is 4-15 part, and expanding material is 0.5-5 part.Wherein, expanding material can be maleic anhydride, acrylic acid modified polylactic acid low polymer, fatty acid monomer glyceryl ester or epoxy rubber, glycidyl acrylate, Zelan 338 grafted polyethylene or other graft polyolefins, its effect is the consistency that increases differing materials, makes it in conjunction with tightr.Agricultural mulching provided by the present invention, has suitable stationary phase and degradative phase, has significantly improved biodegradable controllability, meets crop different growth stage to temperature, moisture, ventilative etc. needs, has dynamic, multidirectional regulatory function.In addition, although raw materials used degradation cycle is different, be Biodegradable Materials, finally realize degradablely, reduce environmental pollution, there is good ecological benefits and economic benefit.
For novel controllable biodegradable agricultural mulching provided by the present invention, by weight, its starting material also comprise thermooxidative degradation promotor 5-30 part, catalyzer 0.1-1 part.Use thermooxidative degradation promotor and catalyzer, can significantly make degradative phase shorten.
For novel controllable biodegradable agricultural mulching provided by the present invention, by weight, its starting material also comprise photostabilizer 0.1-0.5 part, thermo-stabilizer 0.1-0.5 part.Use photostabilizer and thermo-stabilizer, functional period that can significant prolongation mulch film.
Wherein, thermooxidative degradation promotor can be the cinnamic segmented copolymer of styrene butadiene.Biological degradation needs certain heat, and thermooxidative degradation promotor is conducive to cause thermal source, promotes biological degradation.In addition, this promotor or a kind of thermoplastic elastomer can also play toughened and reinforced effect in plastic substrate, make up the strength decreased that low molecular weight substance adds generation.
Catalyzer can be one or more the mixture in stannous octoate, stannous octoate, zinc ethyl, aluminium isopropoxide, tetraisopropoxy titanium or ferric acetyl acetonade.Adding of catalyzer can accelerated reaction, is the needs that biological degradation process is controlled, and add-on increases, and degraded accelerates.Many biodegradable enzymes also need its activity of metal ion competence exertion, and for meeting this kind of demand, used catalyst must be metal catalyst.
Photostabilizer can be one or more the mixture in Hinered phenols antioxidant, hindered amine as light stabilizer, ultraviolet absorbers.Described thermo-stabilizer can be one or more mixture of disulfide group 2-ethyl hexyl ethanoate tin methide, two maleic acid monoacetate dioctyltin, calcium zinc stabilizer.
For novel controllable biodegradable agricultural mulching provided by the present invention, its starting material also comprise CO
2multipolymer.CO
2multipolymer is that material falls in a kind of new bio, by weight, can get 2-30 part.
Can be directly by the aliphatic-aromatic polyester copolymer, poly(lactic acid), starch-base biodegradation material and the CO that sold on the market for the full-biodegradable material of wanting required for the present invention
2two or more of multipolymer mix, thereby obtain the starting material of aforementioned proportion.
For novel controllable biodegradable agricultural mulching provided by the present invention, aliphatic-aromatic polyester copolymer is one or more in poly-hexanodioic acid/butylene terephthalate PBAT, poly-hexanodioic acid/terephthalic acid fourth four ester PTMAT, poly-succsinic acid/mutual-phenenyl two acid bromide two alcohol ester PETS, poly-succsinic acid/carbonic acid butanediol ester PBSC and poly-succinic acid-butanediol-/mutual-phenenyl two acid bromide two alcohol ester PBST.
According to GB/T1040.3-2006 and GB/T2410-80, carry out mechanical property and the light transmission test of mulch film, according to GB/T20197-2006, carried out the degradation property test of mulch film.
Note: moisture determination is all in mid-July.
At the beginning of by the end of April to 5 month, plant the crop that the needs ground such as peanut, cotton heats early stage, heat effect and common ground film does not have significant difference.Enter after July rainfall season, novel controllable biodegradable agricultural mulching of the present invention becomes band or the block degraded of point, can reduce the impact of high temperature on root growth, significantly improve root system moisture content around, be beneficial to root system and keep higher vigor and long active period, can significantly improve output.The adjustment of formula can remarkably influenced degradative phase, adds oxidative degradation promotor and catalyzer also can significantly make degradative phase shorten.
Table in reference, novel controllable biodegradable agricultural mulching of the present invention be peanut preferred 3 embodiment, by weight, being respectively aliphatic-aromatic polyester copolymer and being 80 parts, poly(lactic acid) and be 20 parts, starch-base biodegradation material is 4 parts, and expanding material is 0.5 part (experiment 1); Aliphatic-aromatic polyester copolymer is that 80 parts, poly(lactic acid) are that 20 parts, starch-base biodegradation material are 4 parts, and expanding material is 0.5 part, and oxidative degradation promotor is that 5 parts, catalyzer are 0.1 part (experiment 3); Aliphatic-aromatic polyester copolymer is that 20 parts, poly(lactic acid) are that 80 parts, starch-base biodegradation material are 4 parts, CO
230 parts of multipolymers, expanding material is 2.0 parts (experiments 6).Compare traditional mulch film, by the control degradation time, play significantly the effect of cooling moisture-retaining, then improved peanut yield.
Novel controllable biodegradable agricultural mulching provided by the present invention; except starting material; its production technique and traditional mulch film are just the same; as shown in Figure 1; by weight, 20 parts of aliphatic-aromatic polyester copolymers, 80 parts of poly(lactic acid), 4 parts of starch-base biodegradation materials are made to 1,0.1 part of expanding material 3 of masterbatch; 6,0.1 part of catalyzer 7 of 5 parts of oxidative degradation promotor, stirs and with extrusion granulating machine, makes masterbatch 8 afterwards.Then according to conventional blow molding process coupling coextrusion blow finished product 9.For other embodiment, adopt corresponding starting material, also adopt with the just the same technical process of traditional mulch film and produce.
In sum, novel controllable biodegradable agricultural mulching of the present invention, by preferential degradable material formula, realize the optimization of mulch film function, and significantly improved biodegradable controllability, meet Different Crop different growth stage to temperature, moisture, ventilative etc. needs, there is dynamic, multidirectional regulatory function.In addition, although the raw materials used degradation cycle of the present invention is different, be Biodegradable Materials, finally realize degradablely, reduce environmental pollution, there is good ecological benefits and economic benefit.
The foregoing is only preferred embodiment of the present invention, be not used for limiting practical range of the present invention; If do not depart from the spirit and scope of the present invention, the present invention is modified or is equal to replacement, all should be encompassed in the middle of the protection domain of the claims in the present invention.
Claims (6)
1. a novel controllable biodegradable agricultural mulching, it is characterized in that, its starting material comprise aliphatic-aromatic polyester copolymer, PLA, starch-base biodegradation material, expanding material and degradative phase regulation and control masterbatch, by weight, comprise that aliphatic-aromatic polyester copolymer is 20-80 part, poly(lactic acid) is 20-80 part, and starch-base biodegradation material is 4-15 part, expanding material is 0.5-5 part, and degradative phase regulation and control masterbatch is 0.2-31 part.
2. agricultural mulching according to claim 1, is characterized in that, degradative phase regulation and control masterbatch, for extending the masterbatch of mulch film function phase, by weight, comprises photostabilizer 0.1-0.5 part, thermo-stabilizer 0.1-0.5 part.
3. agricultural mulching according to claim 1, is characterized in that, degradative phase regulation and control masterbatch is the masterbatch of membrane degradation post, by weight, comprises thermooxidative degradation promotor 5-30 part, catalyzer 0.1-1 part.
4. according to the agricultural mulching described in claim 2 or 3, it is characterized in that, described aliphatic-aromatic polyester copolymer is one or more in poly-hexanodioic acid/butylene terephthalate PBAT, poly-hexanodioic acid/terephthalic acid fourth four ester PTMAT, poly-succsinic acid/mutual-phenenyl two acid bromide two alcohol ester PETS, poly-succsinic acid/carbonic acid butanediol ester PBSC and poly-succinic acid-butanediol-/mutual-phenenyl two acid bromide two alcohol ester PBST.
5. according to the agricultural mulching described in claim 2 or 3, it is characterized in that, described expanding material comprises maleic anhydride, acrylic acid modified polylactic acid low polymer, fatty acid monomer glyceryl ester or epoxy rubber, glycidyl acrylate, Zelan 338 grafted polyethylene or other graft polyolefins.
6. according to the agricultural mulching described in claim 2 or 3, it is characterized in that, its starting material also comprise CO
2multipolymer 2-30 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615660.6A CN103665784B (en) | 2013-11-27 | 2013-11-27 | Novel controllable biodegradable agricultural mulching film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615660.6A CN103665784B (en) | 2013-11-27 | 2013-11-27 | Novel controllable biodegradable agricultural mulching film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103665784A true CN103665784A (en) | 2014-03-26 |
| CN103665784B CN103665784B (en) | 2015-07-15 |
Family
ID=50304605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310615660.6A Active CN103665784B (en) | 2013-11-27 | 2013-11-27 | Novel controllable biodegradable agricultural mulching film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103665784B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104629277A (en) * | 2015-01-22 | 2015-05-20 | 夏世勇 | Biodegradable plastic agricultural film |
| CN107868420A (en) * | 2017-12-03 | 2018-04-03 | 山东天野生物降解新材料科技有限公司 | A kind of complete biodegradable peanut ground film special material and preparation method thereof |
| CN107880505A (en) * | 2017-12-03 | 2018-04-06 | 山东天野生物降解新材料科技有限公司 | Plant potato degradative plastic film PP Pipe Compound and preparation method thereof |
| CN108260451A (en) * | 2018-01-18 | 2018-07-10 | 浙江大学 | It is a kind of can weeding Biodegradable mulch |
| CN110330773A (en) * | 2019-07-19 | 2019-10-15 | 深圳利琒环保材料有限公司 | A kind of controllable full-biodegradable mulch and preparation method thereof |
| CN112442263A (en) * | 2020-11-09 | 2021-03-05 | 河南龙都天仁生物材料有限公司 | Preparation method of biodegradable mulching film for rice |
| CN114085507A (en) * | 2021-10-29 | 2022-02-25 | 苏州星火丰盈环保包装有限公司 | PLA biodegradable composite material and preparation method thereof |
| WO2022126812A1 (en) * | 2020-12-14 | 2022-06-23 | 彤程化学（中国）有限公司 | Biodegradable aliphatic-aromatic copolyester and synthesis method therefor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111117283A (en) * | 2019-12-24 | 2020-05-08 | 山东胜伟盐碱地科技有限公司 | Film for saline-alkali soil and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1931906A (en) * | 2005-09-16 | 2007-03-21 | 李小鲁 | Biodegradable composition and its prepn process and filming product |
| CN101805499A (en) * | 2010-03-15 | 2010-08-18 | 任伟 | Full-degradable thermoplastic composite material and sheet thereof |
| CN102796286A (en) * | 2012-08-28 | 2012-11-28 | 广东益德环保科技有限公司 | Full-biodegradable material and preparation method thereof |
-
2013
- 2013-11-27 CN CN201310615660.6A patent/CN103665784B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1931906A (en) * | 2005-09-16 | 2007-03-21 | 李小鲁 | Biodegradable composition and its prepn process and filming product |
| CN101805499A (en) * | 2010-03-15 | 2010-08-18 | 任伟 | Full-degradable thermoplastic composite material and sheet thereof |
| CN102796286A (en) * | 2012-08-28 | 2012-11-28 | 广东益德环保科技有限公司 | Full-biodegradable material and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104629277A (en) * | 2015-01-22 | 2015-05-20 | 夏世勇 | Biodegradable plastic agricultural film |
| CN107868420A (en) * | 2017-12-03 | 2018-04-03 | 山东天野生物降解新材料科技有限公司 | A kind of complete biodegradable peanut ground film special material and preparation method thereof |
| CN107880505A (en) * | 2017-12-03 | 2018-04-06 | 山东天野生物降解新材料科技有限公司 | Plant potato degradative plastic film PP Pipe Compound and preparation method thereof |
| CN108260451A (en) * | 2018-01-18 | 2018-07-10 | 浙江大学 | It is a kind of can weeding Biodegradable mulch |
| CN110330773A (en) * | 2019-07-19 | 2019-10-15 | 深圳利琒环保材料有限公司 | A kind of controllable full-biodegradable mulch and preparation method thereof |
| CN112442263A (en) * | 2020-11-09 | 2021-03-05 | 河南龙都天仁生物材料有限公司 | Preparation method of biodegradable mulching film for rice |
| WO2022126812A1 (en) * | 2020-12-14 | 2022-06-23 | 彤程化学（中国）有限公司 | Biodegradable aliphatic-aromatic copolyester and synthesis method therefor |
| CN114085507A (en) * | 2021-10-29 | 2022-02-25 | 苏州星火丰盈环保包装有限公司 | PLA biodegradable composite material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103665784B (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103665784B (en) | Novel controllable biodegradable agricultural mulching film | |
| Coppola et al. | Bioplastic from renewable biomass: a facile solution for a greener environment | |
| Havstad | Biodegradable plastics | |
| CN203666067U (en) | Strip-segmenting agricultural plastic mulching film with different degradation functions | |
| CN106543668B (en) | A kind of biodegradation black mulch film and preparation method thereof | |
| CN106832807B (en) | Controllable full-degradable mulching film of cellulose-reinforced starch and preparation method thereof | |
| CN104559087A (en) | Controllable bio-based full-degradable mulching film | |
| CN109575536B (en) | Modified polyglycolic acid biodegradable mulching film and preparation method thereof | |
| CN106543667A (en) | A kind of biodegradable plasticss resin and its preparation technology | |
| CN106084700A (en) | A kind of low cost controllable full-biodegradable mulch film and preparation method thereof | |
| CN112262695B (en) | Three-layer composite high-barrier controllable full-biodegradable mulching film and preparation method thereof | |
| CN101434735B (en) | Plant fibre reinforced biodegradable film material and preparation thereof | |
| CN109486138A (en) | PHA modified PLA/PBAT biodegradable resin and preparation method thereof | |
| CN109504042A (en) | PHA modified TPS/PBAT biodegradable resin and preparation method thereof | |
| Sreenikethanam et al. | Algae based bio-plastics: Future of green economy | |
| Choudhary et al. | Commercial production of bioplastic from organic waste–derived biopolymers viz-a-viz waste treatment: A minireview | |
| CN111961321B (en) | Biodegradable poly (4-hydroxybutyrate) agricultural mulching film and preparation method thereof | |
| Tharani et al. | Microalgae as sustainable producers of bioplastic | |
| CN208425287U (en) | A kind of ultrathin type degradable mulch | |
| CN107022177A (en) | A kind of polylactic acid/starch/powder of straw Biobased degradable composite material and preparation method thereof | |
| CN107216491A (en) | A kind of preparation method of novel environment friendly high polymer material | |
| CN114836012B (en) | Completely biodegradable garbage bag film material and preparation method of garbage bag film | |
| CN103651022B (en) | A kind of point asynchronous controllable full-biodegradable agricultural mulching of band | |
| Barletta et al. | Production and processing of biodegradable and compostable biomaterials | |
| CN106084378A (en) | A kind of degradable mulch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20140326 Assignee: SHANDONG QINGTIAN PLASTIC INDUSTRY Co.,Ltd. Assignor: Shandong Agricultural University Contract record no.: X2022370000026 Denomination of invention: A new controllable biodegradable agricultural film Granted publication date: 20150715 License type: Common License Record date: 20220928 |
|
| EE01 | Entry into force of recordation of patent licensing contract |