CN108727789A - A kind of biology base Biodegradable mulch and preparation method thereof - Google Patents
A kind of biology base Biodegradable mulch and preparation method thereof Download PDFInfo
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- CN108727789A CN108727789A CN201810489943.3A CN201810489943A CN108727789A CN 108727789 A CN108727789 A CN 108727789A CN 201810489943 A CN201810489943 A CN 201810489943A CN 108727789 A CN108727789 A CN 108727789A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0268—Mats or sheets, e.g. nets or fabrics
- A01G13/0275—Films
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/132—Phenols containing keto groups, e.g. benzophenones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
-
- 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 kind of biology base Biodegradable mulch and preparation method thereof, solve the problems, such as that existing degradable mulch still relies on oil and does raw material and degrade halfway.In terms of 100 parts by weight weight, contain following substance：75-98 parts of biological base biodegradation resin, 0.5-5 parts of ultraviolet absorber, 0.5-5 parts of light stabilizer, 0.5-5 parts of antioxidant, 0.5-5 parts of end-capping reagent, 0.5-5 parts of opening agent.200 days biological degradation rates are up to 99% or more under industrial composting conditions after the biology base whole life cycle design of the present invention is discarded, and 300 days biological degradation rates 95% are up to more than under field conditions (factors).
Description
Technical field
The invention belongs to the interleaving techniques fields of bio-based materials, biodegradation material and agricultural film material, specifically relate to
And a kind of biology base Biodegradable mulch and preparation method thereof.
Background technology
The growth of crops is closely related with environment temperature and humidity, and mulch can play the growth ring for improving crops
Crop yield is improved in border, is that a good growing environment effect is created in the growth of crops；Mulch is in addition to can effectively adjust
Soil epidemic disaster is saved, stores outside the nutrients and moisture in soil, also has the function of anti-weeds and pest and disease damage, it can be apparent
The yield of crop is improved, China's mulch in 2017 alreadys exceed 1,500,000 tons using total amount, and plastic film mulch area is more than 400,000,000 mu, but is being increased
While adding productivity effect, mulch also results in serious white pollution and the hardening soil.Due to mulch very thin thickness, only 10
Microns are easily broken, are difficult to clear up, currently, both at home and abroad agricultural mulching almost 95% or more be polyethylene ground film, polyethylene
Self structure is stablized, it is virtually impossible to degrade, part polyethylene fragment is caused to be drifted in earth's surface, cause the white for being difficult to administer dirty
Dye, and another part polyethylene debris sedimentation leads to not continue to cultivate to earth's surface hereinafter, cause the hardening soil.
White pollution caused by order to solve the problems, such as mulch and the hardening soil, in recent years, light, oxygen degradative plastic film contain and form sediment
The degradable PE mulches of powder class, the biodegradable class mulch based on polyadipate-mutual-phenenyl two acid bromide two alcohol ester are quickly grown.In
The special CN101828495A, CN102850626A of state, the making side for disclosing light, oxygen degradation or the degradable PE mulches of starch-containing class
Method, but the degradation of light, oxygen or the degradable PE mulches of starch-containing class are examined by practical application, can be only disintegrated compared with fractionlet, to gather
Ethylene moiety can not still degrade.Described in Chinese patent CN104356611A, CN106832807A with polyadipate-to benzene two
Biodegradable class mulch based on formic acid butanediol ester, although can complete decomposition within a short period of time, its synthesis material is still
Portion derives from oil, and ball plastics use total amount more than 500,000,000 tons, due to synthesizing these modelings including agricultural mulching within 2017
Almost portion derives from petroleum resources to the raw material of material, causes to have no to control for oil exploitation；In oil-gas mining, refinery process discharge
Waste water, exhaust gas, oily sludge can serious polluted underground water, air, soil, while it is direct to the change of earth's surface and earth formation
Cause primitive nature ecological environment that expendable destruction occurs.
Invention content
The present invention provides a kind of biology base Biodegradable mulch and preparation method thereof, solve existing degradable mulch still
It so relies on oil and does raw material and halfway technical problem of degrading.
The present invention is to solve the above technical problem by the following technical programs：
A kind of biology base whole life cycle design contains following substance in terms of 100 parts by weight weight：75-98 parts of biology base life
Object degradation resin, 0.5-5 parts of ultraviolet absorber, 0.5-5 parts of light stabilizer, 0.5-5 parts of antioxidant, 0.5-5 parts
End-capping reagent, 0.5-5 parts of opening agent.
A kind of biology base Biodegradable mulch contains following substance in terms of 100 parts by weight weight：75-98 parts of biology base
Biodegradable resin, 1.5 parts of ultraviolet absorber, 3 parts of light stabilizer, 1.5 parts of antioxidant, 1.5 parts of end-capping reagent, 2
The opening agent of part.
Biological base biodegradation resin is fermented using by biomass such as starch, cellulose, vegetable oil esters
Lactic acid, biology base butanediol and biology base succinic acid, then by melt polymerization, obtained polylactic acid, biological poly succinic acid fourth
Diol ester, biological poly adipic acid-mutual-phenenyl two acid bromide two alcohol ester, biological poly succinic acid-mutual-phenenyl two acid bromide two alcohol ester, life
The mixture of a kind of polyester or a variety of polyester in object base poly-succinic-tetramethylene adipate.
Ultraviolet absorber is by one or more benzophenone type ultraviolet absorbents, benzotriazole ultraviolet absorber, triazine
Class ultraviolet absorber forms, preferably UV-531（2-hydroxy-4-n-octoxybenzophenone）With UV-327（2- (2 '-hydroxyls -3 ',
5 '-di-tert-butyl-phenyls) -5- chlorobenzotriazoles）, preferred mass group component number is 1.5%.
Light stabilizer is made of one or more photomask agent, radical scavenger, preferably carbon black and UV622（Polybutadiene
Sour (4- hydroxyl -2,2,6,6- tetramethyl -1- piperidine ethanols) ester）, preferred mass group component number is 3%.
Antioxidant is made of one or more radicals scavenging type antioxidant, oxygen scavenger, antioxidant, preferably antioxygen
Agent 1076（β-（3,5- di-tert-butyl-hydroxy phenyls）Propionic acid n-octadecyl alcohol ester）, preferred mass group component number is 1.5%.
End-capping reagent is by one or more epoxy resin, bisoxazoline, polyoxazolines, carbodiimides or polycarbodiimide
Composition, preferably carbodiimides, preferred mass group component number are 1.5%.
Opening agent by silica, talcum powder, oleamide, the double stearoylketene amine of erucyl amide or vinyl one kind or
A variety of compositions, preferably silica are 2% with the double stearoylketene amine of vinyl, preferred mass group component number.
A kind of preparation method of biology base Biodegradable mulch, includes the following steps：
The first step, in terms of 100 parts by weight weight, remove row substance：75-98 parts of biological base biodegradation resin, 0.5-5 parts
Ultraviolet absorber, 0.5-5 parts of light stabilizer, 0.5-5 parts of antioxidant, 0.5-5 parts of end-capping reagent, 0.5-5 parts of opening
Agent is uniformly mixed with high-speed mixer；
Second step squeezes out uniformly mixed material with double screw extruder, and biology base life is obtained after cooling, granulation and blown film
Object degradative plastic film；The melt temperature of twin-screw extruder extrusion process is less than or is equal to 210 DEG C, the melt temperature of blown film process
It is less than or is equal to 180 DEG C, the particle water content of blown film process is less than or is equal to 300ppm.
200 days biological degradation rates are reachable under industrial composting conditions after the biology base Biodegradable mulch of the present invention is discarded
99% or more, 300 days biological degradation rates 95% are up to more than under field conditions (factors).
Specific implementation mode
The present invention is described in detail below：
Embodiment：It is 50 kilograms by gross mass, based on 100 parts by weight weight, removes the following substance of row parts by weight, 50 parts
Biological poly succinic acid-butanediol ester, 40 parts of biological poly succinic acid-tetramethylene adipate, 2 parts of UV-531（2- hydroxyls
Base -4- oxy-octyl benzophenones）, 3 parts of carbon black, 1.5 parts of antioxidant 1076（β-（3,5- di-t-butyl -4- hydroxy benzenes
Base）Propionic acid n-octadecyl alcohol ester）, 1.5 parts of carbodiimides, 2 parts of silica, by high-speed mixer, per minute
It under 400 turns of mixing speed, mixes 3 minutes, uniformly mixed material is squeezed out by double screw extruder, control screw rod turns
180 turns per minute of speed, melt temperature are 180 DEG C -190 DEG C；After cooling, granulation, particle is dried, 5 are dried at 60 DEG C
Hour, water content 264ppm, using drying particle blown film, 150 DEG C -170 DEG C of blown film temperature, film thickness is 12 ± 1 micro-
Rice, obtains biology base Biodegradable film sample.The indices for detecting this biology base Biodegradable film are as follows：Biomass group
It is 81% to divide content, and longitudinal tensile strength Mpa/ tension failure rates are not less than 40Mpa/150%, and transverse tensile strength Mpa/ stretches disconnected
It splits rate and is not less than 30Mpa/400%, machine direction tear is 150 Ns not less than every millimeter, and cross direction tear strength is not less than every millimeter
170 Ns, 180 days degradation rates of industrial composting conditions are more than or equal to 95%.
Biology base Biodegradable film of the present invention greatly reduces the use of petroleum-based feedstock, reduces from procephalon
Destruction and pollution to environment, while its outstanding mechanical performance and faster degradation speed, it can be ensured that it is created for crops
It makes good growing environment and discarded rear quick crashing decomposes.
Claims (9)
1. a kind of biology base Biodegradable mulch contains following substance in terms of 100 parts by weight weight：75-98 parts of biology base life
Object degradation resin, 0.5-5 parts of ultraviolet absorber, 0.5-5 parts of light stabilizer, 0.5-5 parts of antioxidant, 0.5-5 parts
End-capping reagent, 0.5-5 parts of opening agent.
2. a kind of biology base Biodegradable mulch according to claim 1, which is characterized in that in terms of 100 parts by weight weight,
Contain following substance：75-98 parts of biological base biodegradation resin, 1.5 parts of ultraviolet absorber, 3 parts of light stabilizer, 1.5
The antioxidant of part, 1.5 parts of end-capping reagent, 2 parts of opening agent.
3. a kind of biology base Biodegradable mulch according to claim 1, which is characterized in that biological base biodegradation tree
Ester is using by the biomass such as starch, cellulose, vegetable oil esters, the lactic acid to ferment, biology base butanediol and biology base
Succinic acid, then by melt polymerization, obtained polylactic acid, biological poly succinic acid-butanediol ester, biological poly adipic acid-are to benzene
Dioctyl phthalate butanediol ester, biological poly succinic acid-mutual-phenenyl two acid bromide two alcohol ester, biological poly succinic acid-adipic acid butanediol
The mixture of a kind of polyester or a variety of polyester in ester.
4. biology base Biodegradable mulch according to claim 1, which is characterized in that ultraviolet absorber is by one or more
Benzophenone type ultraviolet absorbent, benzotriazole ultraviolet absorber, triazines ultraviolet absorber composition, preferably UV-531（2-
Hydroxyl -4- oxy-octyl benzophenones）With UV-327（2- (2 '-hydroxyls -3 ', 5 '-di-tert-butyl-phenyls) -5- chlorobenzenes and three
Azoles）, preferred mass group component number is 1.5%.
5. biology base Biodegradable mulch according to claim 1, which is characterized in that light stabilizer is by one or more light
Screener, radical scavenger composition, preferably carbon black and UV622（Poly-succinic (4- hydroxyl -2,2,6,6- tetramethyl -1- piperidines
Ethyl alcohol) ester）, preferred mass group component number is 3%.
6. biology base Biodegradable mulch according to claim 1, which is characterized in that antioxidant by it is one or more from
It is made of base removing type antioxidant, oxygen scavenger, antioxidant, preferably antioxidant 1076（β-（3,5- di-t-butyl -4- hydroxyls
Phenyl）Propionic acid n-octadecyl alcohol ester）, preferred mass group component number is 1.5%.
7. biology base Biodegradable mulch according to claim 1, which is characterized in that end-capping reagent is by one or more epoxies
Resin, bisoxazoline, polyoxazolines, carbodiimides or polycarbodiimide composition, preferably carbodiimides, preferred mass group
Component number is 1.5%.
8. biology base Biodegradable mulch according to claim 1, which is characterized in that opening agent is by silica, talcum
One or more compositions in the double stearoylketene amine of powder, oleamide, erucyl amide or vinyl, preferably silica and vinyl
Double stearoylketene amine, preferred mass group component number are 2%.
9. a kind of preparation method of biology base Biodegradable mulch, includes the following steps：
The first step, in terms of 100 parts by weight weight, remove row substance：75-98 parts of biological base biodegradation resin, 0.5-5 parts
Ultraviolet absorber, 0.5-5 parts of light stabilizer, 0.5-5 parts of antioxidant, 0.5-5 parts of end-capping reagent, 0.5-5 parts of opening
Agent is uniformly mixed with high-speed mixer；
Second step squeezes out uniformly mixed material with double screw extruder, and biology base life is obtained after cooling, granulation and blown film
Object degradative plastic film；The melt temperature of twin-screw extruder extrusion process is less than or is equal to 210 DEG C, the melt temperature of blown film process
It is less than or is equal to 180 DEG C, the particle water content of blown film process is less than or is equal to 300ppm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810489943.3A CN108727789A (en) | 2018-05-21 | 2018-05-21 | A kind of biology base Biodegradable mulch and preparation method thereof |
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| CN201810489943.3A CN108727789A (en) | 2018-05-21 | 2018-05-21 | A kind of biology base Biodegradable mulch and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109535675A (en) * | 2018-12-07 | 2019-03-29 | 北京惠林苑生物科技有限公司 | The hydrolysis light of resistance to UV aging biodegradable plastic mulch and preparation method thereof |
| CN111205603A (en) * | 2018-11-22 | 2020-05-29 | 中国石油化工股份有限公司 | Biodegradable mulching film and preparation method thereof |
| CN116239874A (en) * | 2023-02-24 | 2023-06-09 | 大禾科技发展(南京)有限公司 | Special hydrophobic biodegradable agricultural mulching film for rice as well as preparation method and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111205603A (en) * | 2018-11-22 | 2020-05-29 | 中国石油化工股份有限公司 | Biodegradable mulching film and preparation method thereof |
| CN111205603B (en) * | 2018-11-22 | 2022-07-08 | 中国石油化工股份有限公司 | Biodegradable mulching film and preparation method thereof |
| CN109535675A (en) * | 2018-12-07 | 2019-03-29 | 北京惠林苑生物科技有限公司 | The hydrolysis light of resistance to UV aging biodegradable plastic mulch and preparation method thereof |
| CN109535675B (en) * | 2018-12-07 | 2020-08-25 | 北京惠林苑生物科技有限公司 | Hydrolysis-resistant UV light aging-resistant biodegradable plastic mulching film and preparation method thereof |
| CN116239874A (en) * | 2023-02-24 | 2023-06-09 | 大禾科技发展(南京)有限公司 | Special hydrophobic biodegradable agricultural mulching film for rice as well as preparation method and application thereof |
| CN116239874B (en) * | 2023-02-24 | 2024-01-23 | 大禾科技发展(南京)有限公司 | Special hydrophobic biodegradable agricultural mulching film for rice as well as preparation method and application thereof |
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