CN107148876A - It is a kind of can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing - Google Patents
It is a kind of can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing Download PDFInfo
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- CN107148876A CN107148876A CN201710278152.1A CN201710278152A CN107148876A CN 107148876 A CN107148876 A CN 107148876A CN 201710278152 A CN201710278152 A CN 201710278152A CN 107148876 A CN107148876 A CN 107148876A
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- 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
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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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
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2410/00—Agriculture-related articles
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- 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
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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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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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
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
It is a kind of can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, belong to ground cover material technical field, the ground cover film includes PLA, poly- ethanedioic acid mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light stabilizer by superficial layer, intermediate layer and the common up of three layers of the layer that contacts to earth, superficial layer；Intermediate layer includes poly- ethanedioic acid mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), antioxidant and light stabilizer；The layer that contacts to earth includes PLA, poly- ethanedioic acid mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light stabilizer.The covered ground film of the present invention can be biodegradable, and natural environment will not be polluted；The covered ground film of the present invention is free of plasticiser, to soil and human body fanout free region；The covered ground film water conservation and moisture retention of the present invention is good, increases the yield of crops.
Description
Technical field
The invention belongs to ground cover material technical field, more particularly to it is a kind of can be with water conservation and the three-layer co-extruded life of moisturizing
Thing degraded ground cover film.
Background technology
Covered ground film is typically transparent or black PE films, also there is green, silver thin film, for covered ground, to carry
The high soil moisture, keeps soil moisture, maintains soil texture, prevents disease caused by pest attacks crop and certain micro-organisms
Deng the function of promotion plant growth.At present, soil is remained in after covering substantial amounts of common plastic film, crop harvesting in field
In, it is difficult to degrade, pollution is caused to soil and is damaged；And common covered ground film can not settle can cause in soil mould
Agent too high levels and influence the health of human body.
The content of the invention
The technical problems to be solved by the invention are that offer one kind can be with biodegradable covered ground film.
A kind of it can be covered to solve the above problems, of the present invention with the three-layer co-extruded biodegradable ground of water conservation and moisturizing
Epiphragma, the ground cover film is by superficial layer, intermediate layer and the layer that contacts to earth up of three layers altogether, and the superficial layer is aging-resistant layer, its into
It is steady point to include PLA, polyadipate mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light
Determine agent；Intermediate layer is water conservation layer, and its composition includes polyadipate mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), anti-oxidant
Agent and light stabilizer；The layer that contacts to earth is strengthening layer, and its composition includes PLA, polyadipate mutual-phenenyl two acid bromide two alcohol ester, poly- carbon
Sour Asia propyl ester, hydrolysis-resisting agent, antioxidant and light stabilizer；
Parts by weight of the PLA shared by superficial layer gross weight in the superficial layer are 2~20, and polyadipate is to benzene
Dioctyl phthalate butanediol ester parts by weight shared in superficial layer gross weight are 30~70, and poly (propylene carbonate) is in superficial layer gross weight
In shared parts by weight be 2~40, hydrolysis-resisting agent parts by weight shared in superficial layer gross weight are 0.01~5, antioxidant
Shared parts by weight are 0.01~2 in superficial layer gross weight, and light stabilizer parts by weight shared in superficial layer gross weight are
0.01~2；Polyadipate mutual-phenenyl two acid bromide two alcohol ester in intermediate layer parts by weight shared in the gross weight of intermediate layer for 5~
50, poly (propylene carbonate) parts by weight shared in the gross weight of intermediate layer are 40~90, and hydrolysis-resisting agent is in the gross weight of intermediate layer
Shared parts by weight are 0.01~5, and antioxidant parts by weight shared in the gross weight of intermediate layer are 0.01~2, light stabilizer
Shared parts by weight are 0.01~2 in the gross weight of intermediate layer；The PLA contacted to earth in layer is shared in layer gross weight of contacting to earth
Parts by weight are 5~50, and polyadipate mutual-phenenyl two acid bromide two alcohol ester parts by weight shared in layer gross weight of contacting to earth are 10~60,
Poly (propylene carbonate) parts by weight shared in layer gross weight of contacting to earth are 5~50, and hydrolysis-resisting agent is shared in layer gross weight of contacting to earth
Parts by weight be 0.01~5, antioxidant parts by weight shared in layer gross weight of contacting to earth are 0.01~2, and light stabilizer is being touched
Shared parts by weight are 0.01~2 in the gross weight of stratum.
Hydrolysis-resisting agent in the superficial layer, intermediate layer and the layer that contacts to earth is haplotype carbodiimide compound or many hydrazides
Carbodiimides.
Antioxidant in the superficial layer, intermediate layer and the layer that contacts to earth is hindered phenol anti-oxidants or Benzopyranone kind
Antioxidant or phosphorus antioxidants.
Light stabilizer in the superficial layer, intermediate layer and the layer that contacts to earth is benzotriazole light stabilizer or benzophenone
Light stabilizer or phosphorous acid esters light stabilizer.
It is a kind of can with the manufacture method of water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, the superficial layer,
Intermediate layer and layer raw material that contact to earth, to a shellring shape film head, are then extruded into jointly by respective extruder melting extrusion
Three-layer extrusion film cylinder, is divided into two co-extrusion diaphragm formation co-extrusion mulch films finally by splitting machine.
Compared with prior art, the present invention has advantages below：The present invention, which solves common ground cover film, to drop
The problem of solution, covered ground film of the invention can be biodegradable, and natural environment will not be polluted；The ground of the present invention
Cover film is free of plasticiser, to soil and human body fanout free region；The covered ground film water conservation and moisture retention of the present invention is good, increase
The yield of crops.
Embodiment
Embodiment 1
It is a kind of can with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, ground cover film by superficial layer, in
Interbed and the common up of three layers of the layer that contacts to earth, superficial layer is aging-resistant layer, and its composition includes PLA, polyadipate terephthalic acid (TPA) fourth
Diol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light stabilizer；Intermediate layer is water conservation layer, and its composition includes gathering oneself
Diacid mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), antioxidant and light stabilizer；The layer that contacts to earth is strengthening layer, its composition
It is stable including PLA, polyadipate mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light
Agent；
Parts by weight of the PLA shared by superficial layer gross weight in superficial layer are 2, polyadipate terephthalic acid (TPA) fourth
Diol ester parts by weight shared in superficial layer gross weight are 30, poly (propylene carbonate) weight shared in superficial layer gross weight
Part is 2, and hydrolysis-resisting agent parts by weight shared in superficial layer gross weight are 0.01, and antioxidant is shared in superficial layer gross weight
Parts by weight be 0.01, light stabilizer parts by weight shared in superficial layer gross weight are 0.01；Polyadipate in intermediate layer
Mutual-phenenyl two acid bromide two alcohol ester's parts by weight shared in the gross weight of intermediate layer are 5, and poly (propylene carbonate) is in intermediate layer gross weight
In shared parts by weight be 40, hydrolysis-resisting agent parts by weight shared in the gross weight of intermediate layer are 0.01, and antioxidant is in centre
Shared parts by weight are 0.01 in layer gross weight, and light stabilizer parts by weight shared in the gross weight of intermediate layer are 0.01；Contact to earth
Parts by weight of the PLA shared by layer gross weight of contacting to earth in layer are 5, and polyadipate mutual-phenenyl two acid bromide two alcohol ester is contacting to earth
Shared parts by weight are 10 in layer gross weight, and poly (propylene carbonate) parts by weight shared in layer gross weight of contacting to earth are 5, resistant to hydrolysis
Agent parts by weight shared in layer gross weight of contacting to earth are 0.01, and antioxidant parts by weight shared in layer gross weight of contacting to earth are
0.01, light stabilizer parts by weight shared in layer gross weight of contacting to earth are 0.01.
Hydrolysis-resisting agent in superficial layer, intermediate layer and the layer that contacts to earth is haplotype carbodiimide compound.
Antioxidant in superficial layer, intermediate layer and the layer that contacts to earth is Benzopyranone kind antioxidant.
Light stabilizer in superficial layer, intermediate layer and the layer that contacts to earth is phosphorous acid esters light stabilizer.
Case
2015, wherein one mu of Changfeng County tomato is tested, after winning fruit after Tomato Ripening, obtain experiment kind
Eggplant data are as follows：
Tomato setting percentage：88.3%
Compared with using the experimental plot of common ground cover film, using biological being dropped with the three-layer co-extruded of water conservation and moisturizing
Solve ground cover film experimental plot tomato production promoting 17.8%.
Embodiment 2
It is a kind of can with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, ground cover film by superficial layer, in
Interbed and the common up of three layers of the layer that contacts to earth, superficial layer is aging-resistant layer, and its composition includes PLA, polyadipate terephthalic acid (TPA) fourth
Diol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light stabilizer；Intermediate layer is water conservation layer, and its composition includes gathering oneself
Diacid mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), antioxidant and light stabilizer；The layer that contacts to earth is strengthening layer, its composition
It is stable including PLA, polyadipate mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light
Agent；
Parts by weight of the PLA shared by superficial layer gross weight in superficial layer are 5, polyadipate terephthalic acid (TPA) fourth
Diol ester parts by weight shared in superficial layer gross weight are 50, poly (propylene carbonate) weight shared in superficial layer gross weight
Part is 10, and hydrolysis-resisting agent parts by weight shared in superficial layer gross weight are 0.5, and antioxidant is shared in superficial layer gross weight
Parts by weight be 0.1, light stabilizer parts by weight shared in superficial layer gross weight are 0.1；Polyadipate pair in intermediate layer
Benzene dicarboxylic acid butanediol ester parts by weight shared in the gross weight of intermediate layer are 20, and poly (propylene carbonate) is in the gross weight of intermediate layer
Shared parts by weight are 60, and hydrolysis-resisting agent parts by weight shared in the gross weight of intermediate layer are 0.5, and antioxidant is total in intermediate layer
Shared parts by weight are 0.1 in weight, and light stabilizer parts by weight shared in the gross weight of intermediate layer are 0.1；Contact to earth in layer
PLA parts by weight shared in layer gross weight of contacting to earth are 20, and polyadipate mutual-phenenyl two acid bromide two alcohol ester is in a layer gross weight of contacting to earth
Shared parts by weight are 20 in amount, and poly (propylene carbonate) parts by weight shared in layer gross weight of contacting to earth are 20, and hydrolysis-resisting agent exists
Shared parts by weight are 0.5 in layer gross weight of contacting to earth, and antioxidant parts by weight shared in layer gross weight of contacting to earth are 0.1, light
Stabilizer parts by weight shared in layer gross weight of contacting to earth are 0.1.
Hydrolysis-resisting agent in superficial layer, intermediate layer and the layer that contacts to earth is haplotype carbodiimide compound.
Antioxidant in superficial layer, intermediate layer and the layer that contacts to earth is phosphorus antioxidants.
Light stabilizer in superficial layer, intermediate layer and the layer that contacts to earth is phosphorous acid esters light stabilizer.
Case
2015, wherein one mu of Changfeng County tomato is tested, after winning fruit after Tomato Ripening, obtain experiment kind
Eggplant data are as follows：
Tomato setting percentage：89.8%
Compared with using the experimental plot of common ground cover film, using biological being dropped with the three-layer co-extruded of water conservation and moisturizing
Solve ground cover film experimental plot tomato production promoting 18.4%.
Embodiment 3
It is a kind of can with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, ground cover film by superficial layer, in
Interbed and the common up of three layers of the layer that contacts to earth, superficial layer is aging-resistant layer, and its composition includes PLA, polyadipate terephthalic acid (TPA) fourth
Diol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light stabilizer；Intermediate layer is water conservation layer, and its composition includes gathering oneself
Diacid mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), antioxidant and light stabilizer；The layer that contacts to earth is strengthening layer, its composition
It is stable including PLA, polyadipate mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light
Agent；
Parts by weight of the PLA shared by superficial layer gross weight in superficial layer are 10, polyadipate terephthalic acid (TPA) fourth
Diol ester parts by weight shared in superficial layer gross weight are 60, poly (propylene carbonate) weight shared in superficial layer gross weight
Part it is 30, hydrolysis-resisting agent parts by weight shared in superficial layer gross weight are 2, antioxidant is shared in superficial layer gross weight
Parts by weight are 1, and light stabilizer parts by weight shared in superficial layer gross weight are 1；Polyadipate terephthaldehyde in intermediate layer
Sour butanediol ester parts by weight shared in the gross weight of intermediate layer are 40, and poly (propylene carbonate) is shared in the gross weight of intermediate layer
Parts by weight are 80, and hydrolysis-resisting agent parts by weight shared in the gross weight of intermediate layer are 2, antioxidant institute in the gross weight of intermediate layer
The parts by weight accounted for are 1, and light stabilizer parts by weight shared in the gross weight of intermediate layer are 1；The PLA contacted to earth in layer is contacting to earth
Shared parts by weight are 30 in layer gross weight, polyadipate mutual-phenenyl two acid bromide two alcohol ester weight shared in layer gross weight of contacting to earth
It is 55 to measure part, and poly (propylene carbonate) parts by weight shared in layer gross weight of contacting to earth are 30, and hydrolysis-resisting agent is in a layer gross weight of contacting to earth
In shared parts by weight be 2, antioxidant parts by weight shared in layer gross weight of contacting to earth are 1, and light stabilizer is total in the layer that contacts to earth
Shared parts by weight are 1 in weight.
Hydrolysis-resisting agent in superficial layer, intermediate layer and the layer that contacts to earth is haplotype carbodiimide compound.
Antioxidant in superficial layer, intermediate layer and the layer that contacts to earth is hindered phenol anti-oxidants.
Light stabilizer in superficial layer, intermediate layer and the layer that contacts to earth is benzotriazole light stabilizer.
Case
2015, wherein one mu of Changfeng County tomato is tested, after winning fruit after Tomato Ripening, obtain experiment kind
Eggplant data are as follows：
Tomato setting percentage：93.1%
Compared with using the experimental plot of common ground cover film, using biological being dropped with the three-layer co-extruded of water conservation and moisturizing
Solve ground cover film experimental plot tomato production promoting 22.3%.
Embodiment 4
It is a kind of can with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, ground cover film by superficial layer, in
Interbed and the common up of three layers of the layer that contacts to earth, superficial layer is aging-resistant layer, and its composition includes PLA, polyadipate terephthalic acid (TPA) fourth
Diol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light stabilizer；Intermediate layer is water conservation layer, and its composition includes gathering oneself
Diacid mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), antioxidant and light stabilizer；The layer that contacts to earth is strengthening layer, its composition
It is stable including PLA, polyadipate mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light
Agent；
Parts by weight of the PLA shared by superficial layer gross weight in superficial layer are 15, polyadipate terephthalic acid (TPA) fourth
Diol ester parts by weight shared in superficial layer gross weight are 65, poly (propylene carbonate) weight shared in superficial layer gross weight
Part it is 35, hydrolysis-resisting agent parts by weight shared in superficial layer gross weight are 3, antioxidant is shared in superficial layer gross weight
Parts by weight are 2, and light stabilizer parts by weight shared in superficial layer gross weight are 2；Polyadipate terephthaldehyde in intermediate layer
Sour butanediol ester parts by weight shared in the gross weight of intermediate layer are 45, and poly (propylene carbonate) is shared in the gross weight of intermediate layer
Parts by weight are 85, and hydrolysis-resisting agent parts by weight shared in the gross weight of intermediate layer are 3, antioxidant institute in the gross weight of intermediate layer
The parts by weight accounted for are 2, and light stabilizer parts by weight shared in the gross weight of intermediate layer are 2；The PLA contacted to earth in layer is contacting to earth
Shared parts by weight are 40 in layer gross weight, polyadipate mutual-phenenyl two acid bromide two alcohol ester weight shared in layer gross weight of contacting to earth
It is 55 to measure part, and poly (propylene carbonate) parts by weight shared in layer gross weight of contacting to earth are 40, and hydrolysis-resisting agent is in a layer gross weight of contacting to earth
In shared parts by weight be 3, antioxidant parts by weight shared in layer gross weight of contacting to earth are 2, and light stabilizer is total in the layer that contacts to earth
Shared parts by weight are 2 in weight.
Hydrolysis-resisting agent in superficial layer, intermediate layer and the layer that contacts to earth is haplotype carbodiimide compound.
Antioxidant in superficial layer, intermediate layer and the layer that contacts to earth is Benzopyranone kind antioxidant.
Light stabilizer in superficial layer, intermediate layer and the layer that contacts to earth is benzophenone light stabilizer.
Case
2015, wherein one mu of Changfeng County tomato is tested, after winning fruit after Tomato Ripening, obtain experiment kind
Eggplant data are as follows：
Tomato setting percentage：87.9%
Compared with using the experimental plot of common ground cover film, using biological being dropped with the three-layer co-extruded of water conservation and moisturizing
Solve ground cover film experimental plot tomato production promoting 17.8%.
Embodiment 5
It is a kind of can with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, ground cover film by superficial layer, in
Interbed and the common up of three layers of the layer that contacts to earth, superficial layer is aging-resistant layer, and its composition includes PLA, polyadipate terephthalic acid (TPA) fourth
Diol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light stabilizer；Intermediate layer is water conservation layer, and its composition includes gathering oneself
Diacid mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), antioxidant and light stabilizer；The layer that contacts to earth is strengthening layer, its composition
It is stable including PLA, polyadipate mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light
Agent；
Parts by weight of the PLA shared by superficial layer gross weight in superficial layer are 20, polyadipate terephthalic acid (TPA) fourth
Diol ester parts by weight shared in superficial layer gross weight are 70, poly (propylene carbonate) weight shared in superficial layer gross weight
Part it is 40, hydrolysis-resisting agent parts by weight shared in superficial layer gross weight are 5, antioxidant is shared in superficial layer gross weight
Parts by weight are 2, and light stabilizer parts by weight shared in superficial layer gross weight are 2；Polyadipate terephthaldehyde in intermediate layer
Sour butanediol ester parts by weight shared in the gross weight of intermediate layer are 50, and poly (propylene carbonate) is shared in the gross weight of intermediate layer
Parts by weight are 90, and hydrolysis-resisting agent parts by weight shared in the gross weight of intermediate layer are 5, and antioxidant is in the gross weight of intermediate layer
Shared parts by weight are 2, and light stabilizer parts by weight shared in the gross weight of intermediate layer are 2；The PLA contacted to earth in layer is being touched
Shared parts by weight are 50 in the gross weight of stratum, and polyadipate mutual-phenenyl two acid bromide two alcohol ester is shared in layer gross weight of contacting to earth
Parts by weight are 60, and poly (propylene carbonate) parts by weight shared in layer gross weight of contacting to earth are 50, and hydrolysis-resisting agent is in a layer gross weight of contacting to earth
Shared parts by weight are 5 in amount, and antioxidant parts by weight shared in layer gross weight of contacting to earth are 2, and light stabilizer is in the layer that contacts to earth
Shared parts by weight are 2 in gross weight.
Hydrolysis-resisting agent in superficial layer, intermediate layer and the layer that contacts to earth is many hydrazides carbodiimides.
Antioxidant in superficial layer, intermediate layer and the layer that contacts to earth is phosphorus antioxidants.
Light stabilizer in superficial layer, intermediate layer and the layer that contacts to earth is phosphorous acid esters light stabilizer.
Case
2015, wherein one mu of Changfeng County tomato is tested, after winning fruit after Tomato Ripening, obtain experiment kind
Eggplant data are as follows：
Tomato setting percentage：83.2%
Compared with using the experimental plot of common ground cover film, using biological being dropped with the three-layer co-extruded of water conservation and moisturizing
Solve ground cover film experimental plot tomato production promoting 15.6%.
Claims (10)
1. a kind of can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, it is characterised in that：The ground cover film
By superficial layer, intermediate layer and the common up of three layers of the layer that contacts to earth, the superficial layer is aging-resistant layer, and its composition includes PLA, gathers oneself
Diacid mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), hydrolysis-resisting agent, antioxidant and light stabilizer；Intermediate layer is water conservation
Layer, its composition includes polyadipate mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), antioxidant and light stabilizer；Contact to earth
Layer be strengthening layer, its composition include PLA, polyadipate mutual-phenenyl two acid bromide two alcohol ester, poly (propylene carbonate), hydrolysis-resisting agent,
Antioxidant and light stabilizer；
Parts by weight of the PLA shared by superficial layer gross weight in the superficial layer are 2~20, polyadipate terephthaldehyde
Sour butanediol ester parts by weight shared in superficial layer gross weight are 30~70, poly (propylene carbonate) institute in superficial layer gross weight
The parts by weight accounted for are 2~40, and hydrolysis-resisting agent parts by weight shared in superficial layer gross weight are 0.01~5, and antioxidant is in table
Shared parts by weight are 0.01~2 in surface layer gross weight, and light stabilizer parts by weight shared in superficial layer gross weight are 0.01
~2；Parts by weight of the polyadipate mutual-phenenyl two acid bromide two alcohol ester shared by the gross weight of intermediate layer in intermediate layer are 5~50,
Poly (propylene carbonate) parts by weight shared in the gross weight of intermediate layer are 40~90, and hydrolysis-resisting agent is shared in the gross weight of intermediate layer
Parts by weight be 0.01~5, antioxidant parts by weight shared in the gross weight of intermediate layer are 0.01~2, and light stabilizer is in
Shared parts by weight are 0.01~2 in interbed gross weight；The PLA contacted to earth in layer weight shared in layer gross weight of contacting to earth
Part is 5~50, and polyadipate mutual-phenenyl two acid bromide two alcohol ester parts by weight shared in layer gross weight of contacting to earth are 10~60, poly- carbon
Sour Asia propyl ester parts by weight shared in layer gross weight of contacting to earth are 5~50, hydrolysis-resisting agent weight shared in layer gross weight of contacting to earth
It is 0.01~5 to measure part, and antioxidant parts by weight shared in layer gross weight of contacting to earth are 0.01~2, and light stabilizer is in the layer that contacts to earth
Shared parts by weight are 0.01~2 in gross weight.
2. a kind of according to claim 1 can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, its feature
It is：Parts by weight of the PLA shared by superficial layer gross weight in the superficial layer are 2, polyadipate terephthalic acid (TPA) fourth
Diol ester parts by weight shared in superficial layer gross weight are 30, poly (propylene carbonate) weight shared in superficial layer gross weight
Part is 2, and hydrolysis-resisting agent parts by weight shared in superficial layer gross weight are 0.01, and antioxidant is shared in superficial layer gross weight
Parts by weight be 0.01, light stabilizer parts by weight shared in superficial layer gross weight are 0.01；Polyadipate in intermediate layer
Mutual-phenenyl two acid bromide two alcohol ester's parts by weight shared in the gross weight of intermediate layer are 5, and poly (propylene carbonate) is in intermediate layer gross weight
In shared parts by weight be 40, hydrolysis-resisting agent parts by weight shared in the gross weight of intermediate layer are 0.01, and antioxidant is in centre
Shared parts by weight are 0.01 in layer gross weight, and light stabilizer parts by weight shared in the gross weight of intermediate layer are 0.01；Contact to earth
Parts by weight of the PLA shared by layer gross weight of contacting to earth in layer are 5, and polyadipate mutual-phenenyl two acid bromide two alcohol ester is contacting to earth
Shared parts by weight are 10 in layer gross weight, and poly (propylene carbonate) parts by weight shared in layer gross weight of contacting to earth are 5, resistant to hydrolysis
Agent parts by weight shared in layer gross weight of contacting to earth are 0.01, and antioxidant parts by weight shared in layer gross weight of contacting to earth are
0.01, light stabilizer parts by weight shared in layer gross weight of contacting to earth are 0.01.
3. a kind of according to claim 1 can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, its feature
It is：Parts by weight of the PLA shared by superficial layer gross weight in the superficial layer are 5, polyadipate terephthalic acid (TPA) fourth
Diol ester parts by weight shared in superficial layer gross weight are 50, poly (propylene carbonate) weight shared in superficial layer gross weight
Part is 10, and hydrolysis-resisting agent parts by weight shared in superficial layer gross weight are 0.5, and antioxidant is shared in superficial layer gross weight
Parts by weight be 0.1, light stabilizer parts by weight shared in superficial layer gross weight are 0.1；Polyadipate pair in intermediate layer
Benzene dicarboxylic acid butanediol ester parts by weight shared in the gross weight of intermediate layer are 20, and poly (propylene carbonate) is in the gross weight of intermediate layer
Shared parts by weight are 60, and hydrolysis-resisting agent parts by weight shared in the gross weight of intermediate layer are 0.5, and antioxidant is total in intermediate layer
Shared parts by weight are 0.1 in weight, and light stabilizer parts by weight shared in the gross weight of intermediate layer are 0.1；Contact to earth in layer
PLA parts by weight shared in layer gross weight of contacting to earth are 20, and polyadipate mutual-phenenyl two acid bromide two alcohol ester is in a layer gross weight of contacting to earth
Shared parts by weight are 20 in amount, and poly (propylene carbonate) parts by weight shared in layer gross weight of contacting to earth are 20, and hydrolysis-resisting agent exists
Shared parts by weight are 0.5 in layer gross weight of contacting to earth, and antioxidant parts by weight shared in layer gross weight of contacting to earth are 0.1, light
Stabilizer parts by weight shared in layer gross weight of contacting to earth are 0.1.
4. a kind of according to claim 1 can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, its feature
It is：Parts by weight of the PLA shared by superficial layer gross weight in the superficial layer are 10, polyadipate terephthalic acid (TPA)
Butanediol ester parts by weight shared in superficial layer gross weight are 60, poly (propylene carbonate) weight shared in superficial layer gross weight
It is 30 to measure part, and hydrolysis-resisting agent parts by weight shared in superficial layer gross weight are 2, and antioxidant is shared in superficial layer gross weight
Parts by weight be 1, light stabilizer parts by weight shared in superficial layer gross weight are 1；Polyadipate in intermediate layer is to benzene two
Formic acid butanediol ester parts by weight shared in the gross weight of intermediate layer are 40, and poly (propylene carbonate) is shared in the gross weight of intermediate layer
Parts by weight be 80, hydrolysis-resisting agent parts by weight shared in the gross weight of intermediate layer are 2, and antioxidant is in the gross weight of intermediate layer
Shared parts by weight are 1, and light stabilizer parts by weight shared in the gross weight of intermediate layer are 1；The PLA contacted to earth in layer is being touched
Shared parts by weight are 30 in the gross weight of stratum, and polyadipate mutual-phenenyl two acid bromide two alcohol ester is shared in layer gross weight of contacting to earth
Parts by weight are 55, and poly (propylene carbonate) parts by weight shared in layer gross weight of contacting to earth are 30, and hydrolysis-resisting agent is in a layer gross weight of contacting to earth
Shared parts by weight are 2 in amount, and antioxidant parts by weight shared in layer gross weight of contacting to earth are 1, and light stabilizer is in the layer that contacts to earth
Shared parts by weight are 1 in gross weight.
5. a kind of according to claim 1 can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, its feature
It is：Parts by weight of the PLA shared by superficial layer gross weight in the superficial layer are 15, polyadipate terephthalic acid (TPA)
Butanediol ester parts by weight shared in superficial layer gross weight are 65, poly (propylene carbonate) weight shared in superficial layer gross weight
It is 35 to measure part, and hydrolysis-resisting agent parts by weight shared in superficial layer gross weight are 3, and antioxidant is shared in superficial layer gross weight
Parts by weight be 2, light stabilizer parts by weight shared in superficial layer gross weight are 2；Polyadipate in intermediate layer is to benzene two
Formic acid butanediol ester parts by weight shared in the gross weight of intermediate layer are 45, and poly (propylene carbonate) is shared in the gross weight of intermediate layer
Parts by weight be 85, hydrolysis-resisting agent parts by weight shared in the gross weight of intermediate layer are 3, and antioxidant is in the gross weight of intermediate layer
Shared parts by weight are 2, and light stabilizer parts by weight shared in the gross weight of intermediate layer are 2；The PLA contacted to earth in layer is being touched
Shared parts by weight are 40 in the gross weight of stratum, and polyadipate mutual-phenenyl two acid bromide two alcohol ester is shared in layer gross weight of contacting to earth
Parts by weight are 55, and poly (propylene carbonate) parts by weight shared in layer gross weight of contacting to earth are 40, and hydrolysis-resisting agent is in a layer gross weight of contacting to earth
Shared parts by weight are 3 in amount, and antioxidant parts by weight shared in layer gross weight of contacting to earth are 2, and light stabilizer is in the layer that contacts to earth
Shared parts by weight are 2 in gross weight.
6. a kind of according to claim 1 can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, its feature
It is：Parts by weight of the PLA shared by superficial layer gross weight in the superficial layer are 20, polyadipate terephthalic acid (TPA)
Butanediol ester parts by weight shared in superficial layer gross weight are 70, poly (propylene carbonate) weight shared in superficial layer gross weight
It is 40 to measure part, and hydrolysis-resisting agent parts by weight shared in superficial layer gross weight are 5, and antioxidant is shared in superficial layer gross weight
Parts by weight be 2, light stabilizer parts by weight shared in superficial layer gross weight are 2；Polyadipate in intermediate layer is to benzene two
Formic acid butanediol ester parts by weight shared in the gross weight of intermediate layer are 50, and poly (propylene carbonate) is shared in the gross weight of intermediate layer
Parts by weight be 90, hydrolysis-resisting agent parts by weight shared in the gross weight of intermediate layer are 5, and antioxidant is in the gross weight of intermediate layer
Shared parts by weight are 2, and light stabilizer parts by weight shared in the gross weight of intermediate layer are 2；The PLA contacted to earth in layer is being touched
Shared parts by weight are 50 in the gross weight of stratum, and polyadipate mutual-phenenyl two acid bromide two alcohol ester is shared in layer gross weight of contacting to earth
Parts by weight are 60, and poly (propylene carbonate) parts by weight shared in layer gross weight of contacting to earth are 50, and hydrolysis-resisting agent is in a layer gross weight of contacting to earth
Shared parts by weight are 5 in amount, and antioxidant parts by weight shared in layer gross weight of contacting to earth are 2, and light stabilizer is in the layer that contacts to earth
Shared parts by weight are 2 in gross weight.
7. a kind of according to claim 1 can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, its feature
It is：Hydrolysis-resisting agent in the superficial layer, intermediate layer and the layer that contacts to earth is haplotype carbodiimide compound or many hydrazides carbon
Change diimine class compound.
8. a kind of according to claim 1 can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, its feature
It is：Antioxidant in the superficial layer, intermediate layer and the layer that contacts to earth is that hindered phenol anti-oxidants or Benzopyranone kind are anti-
Oxidant or phosphorus antioxidants.
9. a kind of according to claim 1 can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing, its feature
It is：Light stabilizer in the superficial layer, intermediate layer and the layer that contacts to earth is benzotriazole light stabilizer or benzophenone light
Stabilizer or phosphorous acid esters light stabilizer.
10. it is a kind of it is a kind of according to claim 1 can be with water conservation and the three-layer co-extruded biodegradable ground cover film of moisturizing
Manufacture method, it is characterised in that：The superficial layer, intermediate layer and layer raw material that contact to earth pass through respective extruder melting extrusion to one
Individual shellring shape film head, is then extruded into three-layer extrusion film cylinder, is divided into two co-extrusion diaphragm shapes finally by splitting machine jointly
Into co-extrusion mulch film.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108327368A (en) * | 2018-01-26 | 2018-07-27 | 北京国瑞新源投资有限公司 | Three layers of water-retaining type environmental organism degradable film of one kind and preparation method thereof |
| CN109429841A (en) * | 2018-11-16 | 2019-03-08 | 山东隆昌塑业有限公司 | A kind of degradable mulch and preparation method thereof adapting to varying environment |
| CN113400609A (en) * | 2021-05-11 | 2021-09-17 | 郑荣盛 | Preparation process of water-absorbing degradable plastic film |
| CN115109397A (en) * | 2022-06-24 | 2022-09-27 | 常州博疆新材料科技有限公司 | Full-biodegradable heat shrinkable film and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937179A (en) * | 2013-01-17 | 2014-07-23 | 山东省意可曼科技有限公司 | Completely-biodegradable mulching film material and mulching film |
| CN104744898A (en) * | 2015-03-26 | 2015-07-01 | 南通龙达生物新材料科技有限公司 | Full-biodegradable film and preparation method thereof |
| CN106003943A (en) * | 2016-05-18 | 2016-10-12 | 深圳市虹彩新材料科技有限公司 | Three-layer co-extrusion biodegradable mulch film and preparation method thereof |
| CN106363898A (en) * | 2016-08-25 | 2017-02-01 | 深圳市虹彩新材料科技有限公司 | Preparation method of three-layer co-extrusion whole-biodegradable mulching film and the three-layer co-extrusion whole-biodegradable mulching film |
| CN106519602A (en) * | 2016-11-09 | 2017-03-22 | 广东省生物工程研究所（广州甘蔗糖业研究所） | Multi-layer co-extrusion based biodegradable mulch film and preparation method thereof |
-
2017
- 2017-04-25 CN CN201710278152.1A patent/CN107148876A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937179A (en) * | 2013-01-17 | 2014-07-23 | 山东省意可曼科技有限公司 | Completely-biodegradable mulching film material and mulching film |
| CN104744898A (en) * | 2015-03-26 | 2015-07-01 | 南通龙达生物新材料科技有限公司 | Full-biodegradable film and preparation method thereof |
| CN106003943A (en) * | 2016-05-18 | 2016-10-12 | 深圳市虹彩新材料科技有限公司 | Three-layer co-extrusion biodegradable mulch film and preparation method thereof |
| CN106363898A (en) * | 2016-08-25 | 2017-02-01 | 深圳市虹彩新材料科技有限公司 | Preparation method of three-layer co-extrusion whole-biodegradable mulching film and the three-layer co-extrusion whole-biodegradable mulching film |
| CN106519602A (en) * | 2016-11-09 | 2017-03-22 | 广东省生物工程研究所（广州甘蔗糖业研究所） | Multi-layer co-extrusion based biodegradable mulch film and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108327368A (en) * | 2018-01-26 | 2018-07-27 | 北京国瑞新源投资有限公司 | Three layers of water-retaining type environmental organism degradable film of one kind and preparation method thereof |
| CN108327368B (en) * | 2018-01-26 | 2020-09-29 | 北京国瑞新源投资有限公司 | Three-layer water-retaining environment biodegradable film and preparation method thereof |
| CN109429841A (en) * | 2018-11-16 | 2019-03-08 | 山东隆昌塑业有限公司 | A kind of degradable mulch and preparation method thereof adapting to varying environment |
| CN113400609A (en) * | 2021-05-11 | 2021-09-17 | 郑荣盛 | Preparation process of water-absorbing degradable plastic film |
| CN115109397A (en) * | 2022-06-24 | 2022-09-27 | 常州博疆新材料科技有限公司 | Full-biodegradable heat shrinkable film and preparation method thereof |
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Application publication date: 20170912 |