CN109566210A - Multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE and preparation method thereof - Google Patents
Multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE and preparation method thereof Download PDFInfo
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- 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
- B32B27/06—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
- B32B27/08—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 of synthetic resin
-
- 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
-
- 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
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- 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
-
- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- C—CHEMISTRY; METALLURGY
- 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
-
- C—CHEMISTRY; METALLURGY
- 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
-
- C—CHEMISTRY; METALLURGY
- 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
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/552—Fatigue strength
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/71—Resistive to light or to UV
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/716—Degradable
- B32B2307/7163—Biodegradable
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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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
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/28—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture specially adapted for farming
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- General Health & Medical Sciences (AREA)
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- Mechanical Engineering (AREA)
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- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The present invention provides multi-functional biological degradation plastics mulch of a kind of MULTILAYER COMPOSITE and preparation method thereof, the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE includes at least one layer of ground layer and one layer of supporting layer；The ground layer includes the component of following mass fraction: 100 parts of complete biodegradable polyester, 5-10 parts of reinforcing agent, 0-30 parts of filler, patch ground 5-20 parts of modified master batch, 0-5 parts of chain extender；The supporting layer includes the component of following mass fraction: 100 parts of complete biodegradable polyester, 5-10 parts of reinforcing agent, 0-30 parts of filler, 0-8 parts of auxiliary agent master batch, 0-5 parts of chain extender.Mulch of the invention has both the advantages that biodegradable, good patch ground property, preferable mechanical strength, and can freely adjust required functionality, for example turn photosensitiveness, heat insulating ability etc.；And multi-layer co-extruded method one-pass molding can be passed through.
Description
Technical field
The present invention relates to agricultural mulching fields, more particularly, to a kind of multi-functional biological degradation plastics of MULTILAYER COMPOSITE
Mulch and preparation method thereof.
Background technique
Agricultural mulching was used by China since the end of the eighties in last century, and good heat preservation retain water and nutrients effect is to China
Agricultural brings apparent increasing both production and income.However be made since traditional mulch is blow molded by polyethylene (PE), it is not degradable, it can be residual
It is stored in nature up to upper a century, causes " white pollution " of large area.There are crops apparent in serious contaminated land
The underproduction reduction of income.
White pollution problems are solved at present mainly recycles and use degradative plastic film.And there is residual films for recycling
Therefore the disadvantages of rate of recovery is low, secondary operation is seriously polluted and cost of labor is excessively high is to have at present using whole life cycle design
The mode of effect.In biodegradable plastic mulches numerous at present, existing mulch is single layer mulch mostly, and function is relatively single,
It cannot be considered in terms of requirement used, such as patch property, intensity turn photosensitiveness, ultraviolet-resistent property etc..
Summary of the invention
In view of the problems in the background art, the purpose of the present invention is to provide a kind of multi-functional full biologies of MULTILAYER COMPOSITE
Degradation plastic mulch and preparation method thereof, the mulch have both biodegradable, good patch ground property, preferable mechanical strength etc.
Advantage, and required functionality can be freely adjusted, for example turn photosensitiveness, heat insulating ability etc.；And multi-layer co-extruded method can be passed through
One-pass molding.
To achieve the goals above, in a first aspect, the present invention provides a kind of multi-functional complete biodegradables of MULTILAYER COMPOSITE
Plastic film includes at least one layer of ground layer and one layer of supporting layer；The ground layer includes the component of following mass fraction:
100 parts of complete biodegradable polyester, 5-10 parts of reinforcing agent, 0-30 parts of filler, patch ground 5-20 parts of modified master batch, 0-5 parts of chain extender；Institute
State the component that supporting layer includes following mass fraction: 100 parts of complete biodegradable polyester, 0-30 parts of filler, helps 5-10 parts of reinforcing agent
0-8 parts of agent master batch, 0-5 parts of chain extender.
Further, the multi-functional biological degradation plastics mulch of the MULTILAYER COMPOSITE further includes being located at the ground layer and branch
The functional layer between layer is supportted, the functional layer includes the component of following mass fraction: 100 parts of complete biodegradable polyester, functional agent
10-20 parts of master batch, 0-5 parts of chain extender.
Further, the multi-functional biological degradation plastics mulch of the MULTILAYER COMPOSITE further includes compatibility layer, the compatibility layer
Component comprising following mass fraction: 100 parts of complete biodegradable polyester, 5-20 parts of compatilizer master batch, 0-5 parts of chain extender.
Further, the multi-functional biological degradation plastics mulch of the MULTILAYER COMPOSITE has three-decker, three-decker packet
It includes: ground layer-functional layer-supporting layer.
Further, the multi-functional biological degradation plastics mulch of the MULTILAYER COMPOSITE has five-layer structure, five-layer structure packet
It includes: ground layer-compatibility layer-functional layer-compatibility layer-supporting layer.
Further, the complete biodegradable polyester is polylactic acid (PLA), polyadipate/butylene terephthalate
(PBAT), poly butylene succinate (PBS), poly-succinic-adipic acid fourth diester (PBSA), lined polymethyl ethylene carbonate
(PPC), poly terephthalic acid -co- succinic acid-butanediol ester (PBST), poly 3-hydroxy butyrate (PHB), polyglycolic acid (PGA),
One of polycaprolactone (PCL), polyhydroxy-alkanoate (PHA), polyhydroxybutyrate valerate (PHBV) or combination；The increasing
Strong agent is one of carbon black, white carbon black or combination；The filler is biological one of based filler and inorganic filler or combination；
The chain extender include 1,4- butanediol, 1,6-HD, glycerol, trimethylolpropane, diethylene glycol (DEG), triethylene glycol, neopentyl glycol,
Sorbierite, diethylaminoethanol, ethylenediamine, N, bis- (beta-hydroxyethyl) ethers of N- dihydroxy (diisopropyl) aniline, quinhydrones-, 4,4'-
One of diamino -3,3'- dichloro diphenyl methane or combination.
Further, patch ground modified master batch includes the component of following mass fraction: 100 parts of complete biodegradable polyester,
5-10 parts of glycerol, 80-100 parts of cornstarch；The auxiliary agent master batch includes the component of following mass fraction: complete biodegradable polyester
100 parts, 5-10 parts of glycerol, 80-100 parts of auxiliary agent.
Further, the functional agent master batch includes the component of following mass fraction: 100 parts of complete biodegradable polyester, sweet
It is 5-10 parts oily, 50-100 parts of functional agent；The functional agent includes at least light conversion agent and heat preserving agent；The light conversion agent includes at least glimmering
Light element sodium, Vetaflavin, -7 carboxyl cumarin of fluorescein YG-51,4,8- dimethyl, bifurcation pyridine be red and fluorescein GG in it is a kind of；Institute
Heat preserving agent is stated including at least one of talcum powder, kaolin, calcium carbonate, clay, hydrotalcite, diatomite and glass microballoon.
Further, the compatilizer master batch includes the component of following mass fraction: 100 parts of complete biodegradable polyester, sweet
It is 5-10 parts oily, 50-100 parts of compatilizer；The compatilizer includes at least maleic anhydride, bismaleimide, methacrylic acid contracting
One of water glyceride, vinyl silanes and copolymer of maleic anhydride and acrylic acid.
To achieve the goals above, in second aspect, the present invention provides a kind of multi-functional complete biodegradables of MULTILAYER COMPOSITE
The preparation method of plastic film is used to prepare the multi-functional complete biodegradable modeling of the MULTILAYER COMPOSITE described according to a first aspect of the present invention
Expect mulch comprising step: (1) mixing complete biodegradable polyester, reinforcing agent, filler, patch ground modified master batch and chain extension in proportion
Agent carries out double-screw extruding pelletizing, obtains ground layer particulate material to be processed；(2) complete biodegradable polyester, enhancing are mixed in proportion
Agent, filler, auxiliary agent master batch and chain extender carry out double-screw extruding pelletizing, the layer that is supported particulate material to be processed；(3) in proportion
Complete biodegradable polyester, functional agent and chain extender are mixed, double-screw extruding pelletizing is carried out, obtains functional layer particulate material to be processed；
(4) complete biodegradable polyester, compatilizer and chain extender are mixed in proportion, carry out double-screw extruding pelletizing, it is to be added to obtain compatibility layer
Work particulate material；(5) at least ground layer particulate material to be processed, supporting layer particulate material to be processed are separately added into and are squeezed at least two
Out in the extruder in the multi-layer co-extruded molding equipment of machine, co-extrusion modling obtains the multi-functional complete biodegradable of MULTILAYER COMPOSITE
Plastic film；Wherein, the multi-layer co-extruded molding equipment is coextrusion blow molding or coextrusion casting apparatus.
Beneficial effects of the present invention are as follows:
1, the multi-functional biological degradation plastics mulch of the MULTILAYER COMPOSITE has multilayered structure compared with traditional mulch, including
Ground layer, functional layer and supporting layer；Wherein ground layer contains cornstarch, there is certain hygroscopicity and viscosity, therefore has more preferable
Patch ground property, conducive to the laying between field；Functional layer can as needed during the preparation process, by adjusting matching for functional agent master batch
Side, turns the functions such as photosensitiveness to be arranged；Supporting layer has higher mechanical strength, good weatherability, hydrolytic resistance and resistance to ultraviolet
Aging.
2, function is placed between ground layer and supporting layer, not ingress of air and external substance, avoids functionality short-term
Interior failure；In addition, multiple functional layers are individually present, mulch is set to have multifunctionality, for example exist simultaneously and turn photosensitiveness and heat preservation
Property etc., and avoid the addition several functions auxiliary agent in simple function layer, the in this way feelings in the mechanical property for not reducing film
Under condition, improve the validity of functional layer.
3, the compatibility of each interlayer in the mulch can be improved in compatibility layer, avoids that splitting occurs in use process, realizes
Different complete biodegradable polyester is able to use in the mulch in different layers, thus make the mulch that there is preferable comprehensive performance,
For example have both intensity, flexibility and ageing resistance etc..
4, the modification used in the present invention and forming method are without increasing special equipment, and easy to implement and operation, existing
It is produced in general film molding equipment.
5, the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE of the invention, can be widely applied to the agriculture of each region
Industry is applicable in multiple kinds of crops.
By the detailed description to exemplary embodiment of the present invention, other feature of the invention and its advantage will become
It is clear.
Specific embodiment
To keep the above objects, features, and advantages of invention more obvious and easy to understand, below to specific implementation of the invention
Mode is described in detail.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
It is different from other way described herein using other and implements, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by the specific embodiments disclosed below.
Illustrate the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to a first aspect of the present invention first.
The multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention includes at least one layer of ground layer and one
Layer supporting layer；The ground layer includes the component of following mass fraction: 100 parts of complete biodegradable polyester, is filled out 5-10 parts of reinforcing agent
0-30 parts of material, patch ground 5-20 parts of modified master batch, 0-5 parts of chain extender；The supporting layer includes the component of following mass fraction: Quan Sheng
Object degradation 100 parts of polyester, 5-10 parts of reinforcing agent, 0-30 parts of filler, 0-8 parts of auxiliary agent master batch, 0-5 parts of chain extender.
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, the MULTILAYER COMPOSITE is multi-functional complete
Biodegradable plastic mulch further includes the functional layer between the ground layer and supporting layer, and the functional layer includes following matter
Measure the component of number: 100 parts of complete biodegradable polyester, 10-20 parts of functional agent master batch, 0-5 parts of chain extender.
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, the MULTILAYER COMPOSITE is multi-functional complete
Biodegradable plastic mulch further includes compatibility layer, and the compatibility layer includes the component of following mass fraction: complete biodegradable polyester
100 parts, 5-20 parts of compatilizer master batch, 0-5 parts of chain extender.The compatibility layer can be between ground layer and functional layer, or supports
Between layer and functional layer or between adjacent functional layer.
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, the complete biodegradable polyester is
Polylactic acid (PLA), polyadipate/butylene terephthalate (PBAT), poly butylene succinate (PBS), poly-succinic-oneself
Diacid fourth diester (PBSA), lined polymethyl ethylene carbonate (PPC), poly terephthalic acid -co- succinic acid-butanediol ester (PBST),
Poly 3-hydroxy butyrate (PHB), polyglycolic acid (PGA), polycaprolactone (PCL), polyhydroxy-alkanoate (PHA), poly- hydroxyl fourth
One of sour valerate (PHBV) or combination；
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, the reinforcing agent is carbon black, white
One of carbon black or combination.
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, the filler is biological based filler
With one of inorganic filler or combination；Wherein, the biological based filler be cornstarch, thermoplastic starch, wood powder, bamboo powder,
One of powdered rice hulls and plant fiber or combination；The mesh number of the wood powder, bamboo powder and powdered rice hulls >=100 mesh；The plant
Fibres are one of cotton fiber, flaxen fiber, bamboo fibre and wood pulp cellulose or combination；The inorganic filler is clay, silicon
Diatomaceous earth, glass microballoon, talcum powder, wollastonite, calcium carbonate, mica powder, kaolin, montmorillonite, glass fibre, quartz fibre and
One of alumina silicate fibre or combination；The inorganic filler is handled by silane coupling agent.
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, the chain extender includes Isosorbide-5-Nitrae-fourth
Glycol, 1,6-HD, glycerol, trimethylolpropane, diethylene glycol (DEG), triethylene glycol, neopentyl glycol, sorbierite, diethylaminoethanol,
Ethylenediamine, N, bis- (beta-hydroxyethyl) ethers of N- dihydroxy (diisopropyl) aniline, quinhydrones -, 4,4'- diamino -3,3'- dichloro
One of methane or combination.
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, the MULTILAYER COMPOSITE is multi-functional complete
Biodegradable plastic mulch has three-decker, and three-decker includes: ground layer-functional layer-supporting layer.
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, the MULTILAYER COMPOSITE is multi-functional complete
Biodegradable plastic mulch has five-layer structure, and five-layer structure includes: ground layer-compatibility layer-functional layer-compatibility layer-supporting layer.
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, the MULTILAYER COMPOSITE is multi-functional complete
Biodegradable plastic mulch has seven-layer structure, and seven-layer structure includes: ground layer-compatibility layer-functional layer-compatibility layer-functional layer-
Compatibility layer-supporting layer.
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, the MULTILAYER COMPOSITE is multi-functional complete
Biodegradable plastic mulch has nine layers of structure, and nine layers of structure include: ground layer-compatibility layer-functional layer-compatibility layer-functional layer-
Compatibility layer-functional layer-compatibility layer-supporting layer.
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, patch ground modified master batch includes
The component of following mass fraction: 100 parts of complete biodegradable polyester, 5-10 parts of glycerol, 80-100 parts of cornstarch.
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, the auxiliary agent master batch includes following
The component of mass fraction: 100 parts of complete biodegradable polyester, 5-10 parts of glycerol, 80-100 parts of auxiliary agent.Wherein, the auxiliary agent is light
One of stabilizer, antioxidant, plasticizer, lubricant, anti-hydrolysis agent or combination；The light stabilizer is UV-123, UV-
326, one of UV-328 or combination；The antioxidant is arylamine tertiary amine-type antioxidant, hydrazides type antioxidant, Hinered phenols are anti-
One of oxygen agent, thioesters thioether-type antioxidant or combination；The arylamine tertiary amine-type antioxidant is antioxidant A H；The hydrazides type
Antioxidant is ORA；The Hinered phenols antioxidant be one of antioxidant 1010, antioxidant 1076 and antioxidant 2246 or
Combination；The thioesters thioether-type antioxidant is antioxidant 2246-S, antioxidant methene 4426-s, anti-oxidant DLTP and antioxidant
One of DSTP or combination；The plasticizer is glycerol, polyethylene glycol, sorbierite, polypropylene glycol, (the 2- ethyl of adipic acid two
Hexyl) one of ester and dibutyl adipate or combination；The lubricant is calcium stearate, fatty acid amide, stearic acid, oxygen
Change one of polyethylene wax and tristerin or combination；The anti-hydrolysis agent is N, (the 2,6- diisopropyl benzene of N'- bis-
Base) carbodiimide, more carbodiimides, 2- oxazoline, 3- oxazoline, 4- oxazoline, phenyl glycidyl ether, the double contractings of bisphenol-A
One of water glycerin ether, four (phenyl glycidyl-ether) ethane, trimethoxy [3- (glycidyl ether) propyl] silane
Or combination.
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, the functional agent master batch include with
The component of lower mass fraction: 100 parts of complete biodegradable polyester, 5-10 parts of glycerol, 50-100 parts of functional agent；Wherein, the function
Agent includes at least light conversion agent and heat preserving agent；The light conversion agent includes at least fluorescein sodium, Vetaflavin, fluorescein YG-51,4,8- bis-
- 7 carboxyl cumarin of methyl, bifurcation pyridine be red and fluorescein GG in it is a kind of；The heat preserving agent includes at least talcum powder, kaolin, carbon
One of sour calcium, clay, hydrotalcite, diatomite and glass microballoon.
In the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention, the compatilizer master batch include with
The component of lower mass fraction: 100 parts of complete biodegradable polyester, 5-10 parts of glycerol, 50-100 parts of compatilizer；Wherein, described compatible
Agent includes at least maleic anhydride, bismaleimide, glycidyl methacrylate, vinyl silanes and maleic anhydride-
One of acrylic copolymer.
Secondly the preparation side of the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE of explanation according to a second aspect of the present invention
Method.
The preparation method of the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to the present invention is used to prepare according to this
The multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE described in invention first aspect comprising step: (1) mixing is complete in proportion
Biodegradable polyester, reinforcing agent, filler, patch ground modified master batch and chain extender, carry out double-screw extruding pelletizing, obtain ground layer and wait for
Process particulate material；(2) complete biodegradable polyester, reinforcing agent, filler, auxiliary agent master batch and chain extender are mixed in proportion, carry out double spiral shells
Bar extruding pelletization, the layer that is supported particulate material to be processed；(3) complete biodegradable polyester, functional agent and chain extender are mixed in proportion,
Double-screw extruding pelletizing is carried out, functional layer particulate material to be processed is obtained；(4) complete biodegradable polyester, compatilizer are mixed in proportion
And chain extender, double-screw extruding pelletizing is carried out, compatibility layer particulate material to be processed is obtained；(5) at least by ground layer particle to be processed
Material, supporting layer particulate material to be processed are separately added into the extruder in the multi-layer co-extruded molding equipment at least two extruders
In, co-extrusion modling obtains the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE；Wherein, the multi-layer co-extruded molding is set
It is standby to be blow molded or be coextruded casting apparatus for coextrusion.
Hereinafter, in conjunction with specific embodiments to the preparation side of the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE of the invention
Method illustrates.
Embodiment 1
(1) in mass fraction ratio 100:5:5, polylactic acid (PLA), carbon black and patch ground modified master batch is mixed, double spiral shells are carried out
Bar extruding pelletization obtains ground layer particulate material to be processed；Wherein, patch ground modified master batch includes by mass fraction:
100 parts of polylactic acid (PLA)
5 parts of glycerol
80 parts of cornstarch.
(2) in mass fraction ratio 100:5, polyhydroxybutyrate valerate (PHBV) and carbon black are mixed, twin-screw is carried out and squeezes
It is granulated out, the layer that is supported particulate material to be processed；
(3) in mass fraction ratio 100:10, complete biodegradable polyester and functional agent master batch are mixed, carries out twin-screw extrusion
It is granulated, obtains functional layer particulate material to be processed；Wherein, functional agent master batch includes by mass fraction:
100 parts of polylactic acid (PLA)
5 parts of glycerol
50 parts of hydrotalcite
(4) it by ground layer particulate material to be processed, supporting layer particulate material to be processed and functional layer particulate material to be processed, is added
In 3 extruders in three-layer co-extruded molding equipment out, Coextrusion Blow Moulding obtains the multi-functional complete biodegradable of MULTILAYER COMPOSITE
Plastic film, the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE have three-decker, and three-decker includes: patch ground
Layer-functional layer-supporting layer, the functional layer have heat insulation function.
Embodiment 2
(1) in mass fraction ratio 100:5:5, polylactic acid (PLA), carbon black and patch ground modified master batch is mixed, double spiral shells are carried out
Bar extruding pelletization obtains ground layer particulate material to be processed；Wherein, patch ground modified master batch includes by mass fraction:
100 parts of polylactic acid (PLA)
5 parts of glycerol
80 parts of cornstarch.
(2) in mass fraction ratio 100:5, polyhydroxybutyrate valerate (PHBV) and carbon black are mixed, twin-screw is carried out and squeezes
It is granulated out, the layer that is supported particulate material to be processed；
(3) in mass fraction ratio 100:10, complete biodegradable polyester and functional agent master batch are mixed, carries out twin-screw extrusion
It is granulated, obtains functional layer particulate material to be processed；Wherein, functional agent master batch includes by mass fraction:
100 parts of polylactic acid (PLA)
5 parts of glycerol
50 parts of fluorescein sodium
(4) in mass fraction ratio 100:5, polyhydroxy-alkanoate (PHA) and compatilizer master batch are mixed, carries out twin-screw
Extruding pelletization obtains compatibility layer particulate material to be processed；Wherein, compatilizer master batch includes by mass fraction:
100 parts of polyhydroxy-alkanoate (PHA)
5 parts of glycerol
50 parts of maleic anhydride
(5) by ground layer particulate material to be processed, supporting layer particulate material to be processed, functional layer particulate material to be processed and compatible
Layer particulate material to be processed, is separately added into five-layer co-squeezing and goes out in 5 in molding equipment extruders, and Coextrusion Blow Moulding obtains
The multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE, the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE have five layers
Structure, five-layer structure include: ground layer-compatibility layer-functional layer-compatibility layer-supporting layer, and the functional layer has the function of to turn light.
Embodiment 3
(1) in mass fraction ratio 100:10:30:20:5, mix polyadipate/butylene terephthalate (PBAT),
White carbon black, the wood powder of 300 mesh, patch ground modified master batch and 1,4-butanediol, carry out double-screw extruding pelletizing, it is to be added to obtain ground layer
Work particulate material；Wherein, patch ground modified master batch includes by mass fraction:
100 parts of polyadipate/butylene terephthalate (PBAT)
10 parts of glycerol
90 parts of cornstarch.
(2) it in mass fraction ratio 100:10:30:8:5, mixes poly 3-hydroxy butyrate (PHB), white carbon black, corn form sediment
Powder, auxiliary agent master batch and bis- (beta-hydroxyethyl) ethers of quinhydrones-carry out double-screw extruding pelletizing, the layer that is supported particulate material to be processed；Its
In, auxiliary agent master batch includes by mass fraction:
100 parts of poly 3-hydroxy butyrate (PHB)
10 parts of glycerol
100 parts of antioxidant A H.
(3) in mass fraction ratio 100:20:5, polyglycolic acid (PGA), functional agent master batch and N, N- dihydroxy (two are mixed
Isopropyl) aniline, double-screw extruding pelletizing is carried out, functional layer particulate material to be processed is obtained；Wherein, functional agent master batch presses mass parts
Number includes:
100 parts of polyglycolic acid (PGA)
10 parts of glycerol
00 part of -7 carboxyl coumarin 1 of 4,8- dimethyl
(4) it in mass fraction ratio 100:20:5, mixes polycaprolactone (PCL), compatilizer master batch and ethylenediamine, carries out double
Screw Extrusion is granulated, and obtains compatibility layer particulate material to be processed；Wherein, compatilizer master batch includes by mass fraction:
100 parts of polycaprolactone (PCL)
10 parts of glycerol
100 parts of bismaleimide
(5) by ground layer particulate material to be processed, supporting layer particulate material to be processed, functional layer particulate material to be processed and compatible
Layer particulate material to be processed, is separately added into seven-layer co-extrusion and goes out in 7 in molding equipment extruders, is coextruded tape casting, obtains
The multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE, the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE have seven layers
Structure, seven-layer structure include: ground layer-compatibility layer-functional layer-compatibility layer-functional layer-compatibility layer-supporting layer, the functional layer
Have the function of to turn light.
Embodiment 4
(1) in mass fraction ratio 100:7:15:12:3, poly butylene succinate (PBS), white carbon black, 800 mesh are mixed
Bamboo powder, patch ground modified master batch and 1,6- hexylene glycol, carry out double-screw extruding pelletizing, obtain ground layer particulate material to be processed；Its
In, patch ground modified master batch includes by mass fraction:
100 parts of poly butylene succinate (PBS)
8 parts of glycerol
90 parts of cornstarch.
(2) it in mass fraction ratio 100:8:15:4:2, mixes poly butylene succinate (PBS), white carbon black, thermoplasticity
Starch, auxiliary agent master batch and glycerol carry out double-screw extruding pelletizing, the layer that is supported particulate material to be processed；Wherein, auxiliary agent master batch is pressed
Mass fraction includes:
100 parts of poly butylene succinate (PBS)
7 parts of glycerol
90 parts of antioxidant 1010.
(3) in mass fraction ratio 100:20:5, poly butylene succinate (PBS), functional agent master batch and three hydroxyls are mixed
Methylpropane carries out double-screw extruding pelletizing, obtains functional layer particulate material to be processed；Wherein, functional agent master batch presses mass fraction
Include:
100 parts of poly butylene succinate (PBS)
8 parts of glycerol
Red 80 parts of bifurcation pyridine
(4) it in mass fraction ratio 100:20:5, mixes poly butylene succinate (PBS), compatilizer master batch and two sweet
Alcohol carries out double-screw extruding pelletizing, obtains compatibility layer particulate material to be processed；Wherein, compatilizer master batch includes by mass fraction:
100 parts of poly butylene succinate (PBS)
7 parts of glycerol
80 parts of copolymer of maleic anhydride and acrylic acid
(5) by ground layer particulate material to be processed, supporting layer particulate material to be processed, functional layer particulate material to be processed and compatible
Layer particulate material to be processed, is separately added into 9 extruders in nine layers of co-extrusion modling equipment, Coextrusion Blow Moulding, obtains
The multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE, the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE have nine layers
Structure, nine layers of structure include: ground layer-compatibility layer-functional layer-compatibility layer-functional layer-compatibility layer-functional layer-compatibility layer-
Layer is supportted, the functional layer has the function of to turn light.
Embodiment 5
(1) in mass fraction ratio 100:7:15:12:3, poly-succinic-adipic acid fourth diester (PBSA), hard charcoal is mixed
Black, 400 mesh powdered rice hulls, patch ground modified master batch and triethylene glycol, carry out double-screw extruding pelletizing, obtain ground layer particle to be processed
Material；Wherein, patch ground modified master batch includes by mass fraction:
Poly-succinic -100 parts of adipic acid fourth diester (PBSA)
8 parts of glycerol
90 parts of cornstarch.
(2) it in mass fraction ratio 100:8:15:4:2, mixes lined polymethyl ethylene carbonate (PPC), white carbon black, cotton are fine
Dimension, auxiliary agent master batch and neopentyl glycol carry out double-screw extruding pelletizing, the layer that is supported particulate material to be processed；Wherein, auxiliary agent master batch
Include by mass fraction:
100 parts of lined polymethyl ethylene carbonate (PPC)
7 parts of glycerol
90 parts of antioxidant 1010.
(3) in mass fraction ratio 100:20:5, poly terephthalic acid -co- succinic acid-butanediol ester (PBST), function are mixed
Energy agent master batch and sorbierite carry out double-screw extruding pelletizing, obtain functional layer particulate material to be processed；Wherein, functional agent master batch is pressed
Mass fraction includes:
100 parts of poly terephthalic acid -co- succinic acid-butanediol ester (PBST)
8 parts of glycerol
80 parts of Vetaflavin
(4) it in mass fraction ratio 100:20:5, mixes polycaprolactone (PCL), compatilizer master batch and diethylaminoethanol,
Double-screw extruding pelletizing is carried out, compatibility layer particulate material to be processed is obtained；Wherein, compatilizer master batch includes by mass fraction:
100 parts of polycaprolactone (PCL)
7 parts of glycerol
80 parts of glycidyl methacrylate
(5) by ground layer particulate material to be processed, supporting layer particulate material to be processed, functional layer particulate material to be processed and compatible
Layer particulate material to be processed, is separately added into 9 extruders in nine layers of co-extrusion modling equipment, Coextrusion Blow Moulding, obtains
The multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE, the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE have nine layers
Structure, nine layers of structure include: ground layer-compatibility layer-functional layer-compatibility layer-functional layer-compatibility layer-functional layer-compatibility layer-
Layer is supportted, the functional layer has the function of to turn light.
Embodiment 6
(1) in mass fraction ratio 100:7:15:12:3, poly-succinic-adipic acid fourth diester (PBSA), hard charcoal is mixed
Black, flaxen fiber, patch ground modified master batch and bis- (beta-hydroxyethyl) ethers of quinhydrones-, carry out double-screw extruding pelletizing, it is to be added to obtain ground layer
Work particulate material；Wherein, patch ground modified master batch includes by mass fraction:
Poly-succinic -100 parts of adipic acid fourth diester (PBSA)
8 parts of glycerol
90 parts of cornstarch.
(2) it in mass fraction ratio 100:8:15:4:2, mixes lined polymethyl ethylene carbonate (PPC), white carbon black, silicon ash
Stone, auxiliary agent master batch and bis- (beta-hydroxyethyl) ethers of quinhydrones-carry out double-screw extruding pelletizing, the layer that is supported particulate material to be processed；Its
In, auxiliary agent master batch includes by mass fraction:
100 parts of lined polymethyl ethylene carbonate (PPC)
7 parts of glycerol
90 parts of antioxidant 1010.
(3) in mass fraction ratio 100:20:5, poly terephthalic acid -co- succinic acid-butanediol ester (PBST), function are mixed
Energy agent master batch and 4,4'- diamino -3,3'- dichloro diphenyl methane carry out double-screw extruding pelletizing, it is to be added to obtain the first functional layer
Work particulate material；Wherein, functional agent master batch includes by mass fraction:
100 parts of poly terephthalic acid -co- succinic acid-butanediol ester (PBST)
8 parts of glycerol
80 parts of fluorescein YG-51
(4) in mass fraction ratio 100:20:5, poly terephthalic acid -co- succinic acid-butanediol ester (PBST), function are mixed
Energy agent master batch and 4,4'- diamino -3,3'- dichloro diphenyl methane carry out double-screw extruding pelletizing, it is to be added to obtain the second functional layer
Work particulate material；Wherein, functional agent master batch includes by mass fraction:
100 parts of poly terephthalic acid -co- succinic acid-butanediol ester (PBST)
8 parts of glycerol
80 parts of glass microballoon
Wherein glass microballoon is handled by Silane coupling agent KH550.
(5) it in mass fraction ratio 100:20:5, mixes poly terephthalic acid -co- succinic acid-butanediol ester (PBST), phase
Hold agent master batch and diethylaminoethanol, carries out double-screw extruding pelletizing, obtain compatibility layer particulate material to be processed；Wherein, compatilizer
Master batch includes by mass fraction:
100 parts of poly terephthalic acid -co- succinic acid-butanediol ester (PBST)
7 parts of glycerol
80 parts of vinyl silanes
(6) respectively by ground layer particulate material to be processed, supporting layer particulate material to be processed, the first functional layer particle to be processed
Material, the second functional layer particulate material to be processed and compatibility layer particulate material to be processed, are separately added into nine layers of co-extrusion modling equipment
9 extruders in, Coextrusion Blow Moulding obtains the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE, and the multilayer is multiple
Multi-functional biological degradation plastics mulch is closed with nine layers of structure, nine layers of structure include: the-the first functional layer of ground layer-compatibility layer-
The-the second functional layer of compatibility layer-the-the first functional layer of compatibility layer-compatibility layer-supporting layer, wherein the first functional layer has the function of to turn light,
Second functional layer has heat insulation function.
Comparative example 1
In mass fraction ratio 100:5, polylactic acid (PLA) and carbon black are mixed, double-screw extruding pelletizing is carried out, is extruded into
Type obtains monofilm.
Performance test
1, the measurement of tensile strength and elongation at break
" measurement of plastic tensile performance " (GB T1040.3-2006) third portion according to national standards, film and thin slice
Experimental condition: dumbbell shape batten is length 150mm, and narrow parallel width is 10mm, tensile speed 200mm/min, room temperature 25
℃。
2, the measurement of angle tear strength
It quotes QB/T1130-1991 " plastic quarter tear resistance test method ", tensile speed 200mm/min, room temperature 25
℃。
3, the measurement of peel strength
Film sample is width 15mm, length 200mm；Specimen length direction is pre- by the polarity engineering plastic bed of material and polyolefin layer
It first peels off, carries out T-type removing, measure Average peel force (N), test speed 300mm/min.
The performance test results are as shown in table 1.
1 the performance test results of table
The multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE provided in the present invention it can be seen from the above embodiments that,
The mulch other than having functionality, has preferable tensile strength with respect to single layer mulch, also as the presence of compatibility layer, removing
Intensity is preferable；In addition, modification used in the present invention and forming method can produce in existing general film molding equipment,
It is simple and practical, without increasing special equipment.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that above example merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE, which is characterized in that the multi-functional full life of MULTILAYER COMPOSITE
Object degradation plastic mulch includes at least one layer of ground layer and one layer of supporting layer；
The ground layer includes the component of following mass fraction: 100 parts of complete biodegradable polyester, 5-10 parts of reinforcing agent, filler 0-
30 parts, patch ground 5-20 parts of modified master batch, 0-5 parts of chain extender；
The supporting layer includes the component of following mass fraction: 100 parts of complete biodegradable polyester, 5-10 parts of reinforcing agent, filler 0-
30 parts, 0-8 parts of auxiliary agent master batch, 0-5 parts of chain extender.
2. the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to claim 1, which is characterized in that the multilayer
Composite multifunction biological degradation plastics mulch further includes the functional layer between the ground layer and supporting layer, the function
Layer includes the component of following mass fraction: 100 parts of complete biodegradable polyester, 10-20 parts of functional agent master batch, 0-5 parts of chain extender.
3. the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to claim 2, which is characterized in that the multilayer
Composite multifunction biological degradation plastics mulch further includes compatibility layer, and the compatibility layer includes the component of following mass fraction: complete
100 parts of Biodegradable polyester, 5-20 parts of compatilizer master batch, 0-5 parts of chain extender.
4. the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to claim 2, which is characterized in that the multilayer
Composite multifunction biological degradation plastics mulch has three-decker, and three-decker includes: ground layer-functional layer-supporting layer.
5. the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to claim 3, which is characterized in that the multilayer
Composite multifunction biological degradation plastics mulch has five-layer structure, and five-layer structure includes: ground layer-compatibility layer-functional layer-phase
Hold layer-supporting layer.
6. the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to claim 3, which is characterized in that
The complete biodegradable polyester is polylactic acid (PLA), polyadipate/butylene terephthalate (PBAT), poly-succinic
Butanediol ester (PBS), poly-succinic-adipic acid fourth diester (PBSA), lined polymethyl ethylene carbonate (PPC), poly terephthalic acid-
Co- succinic acid-butanediol ester (PBST), poly 3-hydroxy butyrate (PHB), polyglycolic acid (PGA), polycaprolactone (PCL), poly- hydroxyl
One of base alkyl acid esters (PHA), polyhydroxybutyrate valerate (PHBV) or combination；
The reinforcing agent is one of carbon black, white carbon black or combination；
The filler is biological one of based filler and inorganic filler or combination；
The chain extender includes 1,4- butanediol, 1,6-HD, glycerol, trimethylolpropane, diethylene glycol (DEG), triethylene glycol, new penta
Glycol, sorbierite, diethylaminoethanol, ethylenediamine, N, bis- (beta-hydroxyethyl) ethers of N- dihydroxy (diisopropyl) aniline, quinhydrones-,
One of 4,4'- diamino -3,3'- dichloro diphenyl methane or combination.
7. the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to claim 3, which is characterized in that
Patch ground modified master batch includes the component of following mass fraction: 100 parts of complete biodegradable polyester, 5-10 parts of glycerol, jade
80-100 parts of rice starch；
The auxiliary agent master batch includes the component of following mass fraction: 100 parts of complete biodegradable polyester, 5-10 parts of glycerol, auxiliary agent 80-
100 parts.
8. the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to claim 3, which is characterized in that the function
Agent master batch includes the component of following mass fraction: 100 parts of complete biodegradable polyester, 5-10 parts of glycerol, 50-100 parts of functional agent；
The functional agent includes at least one of light conversion agent and heat preserving agent；
The light conversion agent includes at least fluorescein sodium, Vetaflavin, -7 carboxyl cumarin of fluorescein YG-51,4,8- dimethyl, bifurcation pyridine
It is a kind of in red and fluorescein GG；
The heat preserving agent includes at least in talcum powder, kaolin, calcium carbonate, clay, hydrotalcite, diatomite and glass microballoon
It is a kind of.
9. the preparation method of the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE according to claim 3, feature exist
In the compatilizer master batch includes the component of following mass fraction: 100 parts of complete biodegradable polyester, 5-10 parts of glycerol, compatilizer
50-100 parts；
The compatilizer include at least maleic anhydride, bismaleimide, glycidyl methacrylate, vinyl silanes with
And one of copolymer of maleic anhydride and acrylic acid.
10. a kind of preparation method of the multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE, is used to prepare as in claim 1-9
The multi-functional biological degradation plastics mulch of MULTILAYER COMPOSITE described in any one, which is characterized in that comprising steps of
(1) complete biodegradable polyester, reinforcing agent, filler, patch ground modified master batch and chain extender are mixed in proportion, are carried out twin-screw and are squeezed
It is granulated out, obtains ground layer particulate material to be processed；
(2) complete biodegradable polyester, reinforcing agent, filler, auxiliary agent master batch and chain extender are mixed in proportion, are carried out twin-screw extrusion and are made
Grain, the layer that is supported particulate material to be processed；
(3) complete biodegradable polyester, functional agent and chain extender are mixed in proportion, are carried out double-screw extruding pelletizing, are obtained functional layer
Particulate material to be processed；
(4) complete biodegradable polyester, compatilizer and chain extender are mixed in proportion, are carried out double-screw extruding pelletizing, are obtained compatibility layer
Particulate material to be processed；
(5) at least ground layer particulate material to be processed, supporting layer particulate material to be processed are separately added into at least two extruders
Multi-layer co-extruded molding equipment in extruder in, co-extrusion modling, obtain the multi-functional biological degradation plastics of MULTILAYER COMPOSITE
Mulch；Wherein, the multi-layer co-extruded molding equipment is coextrusion blow molding or coextrusion casting apparatus.
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