CN108811993A - Mulch and its preparation method and application - Google Patents
Mulch and its preparation method and application Download PDFInfo
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- CN108811993A CN108811993A CN201810750385.1A CN201810750385A CN108811993A CN 108811993 A CN108811993 A CN 108811993A CN 201810750385 A CN201810750385 A CN 201810750385A CN 108811993 A CN108811993 A CN 108811993A
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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
- A01G13/0262—Mulches, i.e. covering material not-pre-formed in mats or sheets
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- 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
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
-
- 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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Pest Control & Pesticides (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental Sciences (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Soil Sciences (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Fertilizers (AREA)
Abstract
The invention belongs to agricultural mulching technical fields, more particularly, to a kind of mulch and its preparation method and application.Mulch in the present invention is mainly prepared by the raw material of following parts by weight：50-70 parts of base-material, 10-20 parts of degradation agent and 4-10 parts of fertilizer synergist；Wherein, degradation agent includes biodegradation agent and/or function degradation agent.Plastic-film disintegration speed in the present invention is fast, degradation is more thoroughly, degradation rate is up to 99%, and it can provide at least one of nitrogen, P elements, potassium element, magnesium elements or ferro element element after degrading, or provide humic acid, with certain getting fat effect, and cost is relatively low, is a kind of environmentally friendly and brings the mulch of added value after degrading.
Description
Technical field
The present invention relates to agricultural mulching technical fields, more particularly, to a kind of mulch and its preparation method and application.
Background technique
Mulch, that is, ground is covered with film, and usually transparent or black polyethylene film also has green or silver thin film, is used for
Ground is covered with, and to improve the soil moisture, is kept soil moisture, is maintained soil texture, prevents pest attacks crop slightly raw with certain
Disease caused by object etc. promotes the function of plant growth.
Traditional agricultural mulching is because difficult to degrade, and residual mulching film obstructs Water Transport in the soil, hinders root growth, to agriculture
Plant growth is bad, produces larger Soil Environmental Pollution, and degradable mulch good can solve these problems, but at present
Degradable mulch there are the following problems：Degradation speed is slow, and degradation is not thorough, plain vanilla after degradation, and at
This is higher.
In consideration of it, the present invention is specifically proposed.
Summary of the invention
It is an object of the present invention to provide a kind of mulches, slow to alleviate Plastic-film disintegration speed existing in the prior art
Slowly, degradation is not thorough, plain vanilla after degradation, and the technical issues of higher cost.Plastic-film disintegration speed provided by the invention
Fastly, more thoroughly, degradation rate is up to 99%, and can provide nitrogen, P elements, potassium element, magnesium elements or iron after degrading for degradation
At least one of element element, or humic acid is provided, there is certain getting fat effect, and cost is relatively low.
It is another object of the present invention to provide the preparation methods of mulch, and this method is easy to operate, and controllability is higher.
A kind of purposes it is another object of the present invention to provide mulch as agricultural mulching.The mulch is degradable, and
Have effects that getting fat, crops can be promoted preferably to grow, while protecting environment.
A kind of mulch, the mulch are mainly prepared by the raw material of following parts by weight：50-70 parts of base-material, degradation agent
10-20 parts and fertilizer synergist 4-10 parts；
Wherein, degradation agent includes biodegradation agent and/or function degradation agent.
Preferably, the mulch is mainly prepared by the raw material of following parts by weight：
55-65 parts of base-material, 12-18 parts of degradation agent and 6-9 parts of fertilizer synergist；
Preferably, the mulch is mainly prepared by the raw material of following parts by weight：
58-60 parts of base-material, 15-16 parts of degradation agent and 7-8 parts of fertilizer synergist.
Preferably, the biodegradation agent includes potassium humate, Humic acid Magnesium, calcium humate, fermentation oil cake powder, casein
At least one of with hydrophobin.
Preferably, the function degradation agent include in polydioxanone, ferrocene and amino modified starch at least
It is a kind of.
Preferably, the fertilizer synergist includes Potassium Hydrogen Phthalate, phthalic acid potassium sodium, formic acid ferrocene and polyphosphoric acid
At least one of ammonium；
Preferably, the base-material includes at least one of polyethylene, polypropylene and polyethylene terephthalate.
The preparation method of mulch as described above, mainly includes the following steps that：Base-material, degradation agent and fertilizer synergist are mixed,
Master batch is prepared, then master batch is mixed with base-material, prepares mulch；
Alternatively, directly mixing base-material, degradation agent and fertilizer synergist, mulch is prepared.
Preferably, the preparation method of the mulch, mainly includes the following steps that：
(a) base-material, degradation agent and fertilizer synergist are mixed, heats and stir, then is granulated with double screw extruder, constant temperature
It is dry, obtain master batch；
(b) master batch for obtaining step (a) is mixed with base-material, is granulated with double screw extruder, and film is blow molded into, permanent
Temperature is dry, obtains mulch.
Preferably, mixing temperature is 85-95 DEG C, mixing time 13-20min in the step (a), and extrusion temperature is
120-180℃；
Preferably, mixing temperature is 88-90 DEG C, mixing time 15-16min in the step (a), and extrusion temperature is
150-160℃；
Preferably, extrusion temperature is 120-180 DEG C in the step (b)；
Preferably, extrusion temperature is 150-160 DEG C in the step (b)；
Preferably, the mulch is with a thickness of 8 ± 0.2 μm, and preferably 8 ± 0.1 μm.
Preferably, the preparation method of the mulch includes the following steps：
Base-material, degradation agent and fertilizer synergist are mixed, heats and stirs, then be granulated with double screw extruder, is blow molded into
Film, freeze-day with constant temperature obtain mulch；
Preferably, mixing temperature is 85-95 DEG C, mixing time 13-20min, and extrusion temperature is 120-180 DEG C；
Preferably, mixing temperature is 88-90 DEG C, mixing time 15-16min, and extrusion temperature is 150-160 DEG C；
Preferably, the mulch is with a thickness of 8 ± 0.2 μm, and preferably 8 ± 0.1 μm.
Purposes of the mulch as agricultural mulching as described above.
Compared with the prior art the present invention has the advantages that：
(1) mulch provided by the invention includes base-material, degradation agent and fertilizer synergist, passes through allotment base-material, degradation agent and getting fat
The Plastic-film disintegration speed of synergistic effect between the ratio and degradation agent and fertilizer synergist of agent, acquisition is fast, and degradation more thoroughly, is dropped
Solution rate is up to 99%, and can provide at least one of nitrogen, P elements, potassium element, magnesium elements or ferro element after degrading
Element, or provide humic acid, has certain getting fat effect, and cost is relatively low, is a kind of environmentally friendly and brings after degrading
The mulch of added value.
(2) preparation method of mulch is simple in the present invention, and controllability is higher, can be by by base-material, degradation agent and fertilizer synergist
Mixing, prepares master batch, then master batch is mixed with raw material, prepares mulch；Alternatively, by directly by base-material, degradation agent and increasing
Fertile agent mixing, prepares mulch.The mulch is degradable, and has effects that getting fat, as agricultural mulching, can promote crops more
Good growth, while playing the role of protecting environment.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the preparation technology figure of mulch provided by the invention；
Fig. 2 is another preparation technology figure of mulch provided by the invention.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
According to an aspect of the present invention, a kind of mulch, the mulch are mainly prepared by the raw material of following parts by weight
It arrives：50-70 parts of base-material, 10-20 parts of degradation agent and 4-10 parts of fertilizer synergist；
Wherein, degradation agent includes biodegradation agent and/or function degradation agent.
The present invention uses 50-70 parts of base-materials, 10-20 parts of degradation agents and 4-10 parts of fertilizer synergists, passes through degradation agent and fertilizer synergist
Synergistic effect, Plastic-film disintegration speed obtained is fast, and more thoroughly, degradation rate is up to 99% for degradation, and can provide nitrogen after degrading
At least one of element, P elements, potassium element, magnesium elements or ferro element element, or humic acid is provided, crops can be promoted
Growth.
The typical but non-limiting parts by weight of base-material are, for example, 50 parts, 52 parts, 54 parts, 56 parts, 58 parts, 60 parts, 62 parts,
64 parts, 66 parts, 68 parts or 70 parts.
The typical but non-limiting parts by weight of degradation agent are, for example, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16
Part, 17 parts, 18 parts, 19 parts or 20 parts.
The typical but non-limiting parts by weight of fertilizer synergist are, for example, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts or 10 parts.
Preferably, the mulch is mainly prepared by the raw material of following parts by weight：
55-65 parts of base-material, 12-18 parts of degradation agent and 6-9 parts of fertilizer synergist；
Preferably, the mulch is mainly prepared by the raw material of following parts by weight：
58-60 parts of base-material, 15-16 parts of degradation agent and 7-8 parts of fertilizer synergist.
By the proportion of optimization base-material, degradation agent and fertilizer synergist, mulch obtained has superior degradation rate and degradation
Rate.
Preferably, the biodegradation agent includes potassium humate, Humic acid Magnesium, calcium humate, fermentation oil cake powder, casein
At least one of with hydrophobin.
Preferably, the function degradation agent include in polydioxanone, ferrocene and amino modified starch at least
It is a kind of.
Polydioxanone (PPDO) is one kind of aliphatic polyester, since it is with excellent biocompatibility and life
Biodegradable is successfully applied to manufacture surgical sutures, bone plate and tissue renovation material, such as screw, hook, piece and pincers already
Equal surgery devices.Polydioxanone in addition in vivo have excellent biocompatibility and biological degradability other than,
It also has preferable biological degradability in the natural environment.
By the way that biodegradation agent and/or function degradation agent, the mulch prepared degradation rate with higher, degradation agent is added
Additive amount wants moderate, and adding too much, degradation rate is too fast, and ground membrane lifetime is shorter, and additive amount is too low, and degradation rate is too slow, adds
Add suitable degradation agent that can make ground membrane lifetime within the scope of crop growth is wanted, is conducive to the growth of crops.
Preferably, the fertilizer synergist includes Potassium Hydrogen Phthalate, phthalic acid potassium sodium, formic acid ferrocene and polyphosphoric acid
At least one of ammonium；
Pass through at least one in addition Potassium Hydrogen Phthalate, phthalic acid potassium sodium, formic acid ferrocene and ammonium polyphosphate
Kind fertilizer synergist, the mulch of preparation can provide in nitrogen, P elements, potassium element, magnesium elements or ferro element at least after degradation
A kind of element, crop growth are good.
Preferably, fertilizer synergist selection Potassium Hydrogen Phthalate, phthalic acid potassium sodium, formic acid ferrocene and ammonium polyphosphate.
Preferably, the base-material includes at least one of polyethylene, polypropylene and polyethylene terephthalate.
According to another aspect of the present invention, the preparation method of mulch as described above, mainly includes the following steps that：By base
Material, degradation agent and fertilizer synergist mixing, prepare master batch, then master batch is mixed with base-material, prepare mulch；
Alternatively, directly mixing base-material, degradation agent and fertilizer synergist, mulch is prepared.
It can prepare that degradation speed is fast by both methods, degradation rate is up to 99% or more mulch.This method
Easy to operate, controllability is higher.
Preferably, the preparation method of the mulch, mainly includes the following steps that：
(a) base-material, degradation agent and fertilizer synergist are mixed, heats and stir, then is granulated with double screw extruder, constant temperature
It is dry, obtain master batch；
(b) master batch for obtaining step (a) is mixed with base-material, is granulated with double screw extruder, and film is blow molded into, permanent
Temperature is dry, obtains mulch.
Preferably, mixing temperature is 85-95 DEG C, mixing time 13-20min in the step (a), and extrusion temperature is
120-180℃；
Typical but non-limiting mixing temperature is, for example, 85 DEG C, 86 DEG C, 87 DEG C, 88 DEG C, 89 DEG C, 90 DEG C, 91 DEG C, 92
DEG C, 93 DEG C, 94 DEG C or 95 DEG C.
Mixing time it is typical but non-limiting be, for example, 13min, 14min, 15min, 16min, 17min, 18min,
19min or 20min.
Extrusion temperature it is typical but non-limiting be, for example, 120 DEG C, 130 DEG C, 140 DEG C, 150 DEG C, 160 DEG C, 170 DEG C or
180℃。
Preferably, mixing temperature is 88-90 DEG C, mixing time 15-16min in the step (a), and extrusion temperature is
150-160℃；
Preferably, extrusion temperature is 120-180 DEG C in the step (b)；
Extrusion temperature it is typical but non-limiting be, for example, 120 DEG C, 130 DEG C, 140 DEG C, 150 DEG C, 160 DEG C, 170 DEG C or
180℃。
Preferably, extrusion temperature is 150-160 DEG C in the step (b)；
Preferably, the mulch is with a thickness of 8 ± 0.2 μm, and preferably 8 ± 0.1 μm.
Typical but non-limiting ground film thickness is, for example, 7.8 μm, 7.9 μm, 8 μm, 8.1 μm or 8.2 μm.
Preferably, the preparation method of the mulch includes the following steps：
Base-material, degradation agent and fertilizer synergist are mixed, heats and stirs, then be granulated with double screw extruder, is blow molded into
Film, freeze-day with constant temperature obtain mulch；
Preferably, mixing temperature is 85-95 DEG C, mixing time 13-20min, and extrusion temperature is 120-180 DEG C；
Typical but non-limiting mixing temperature is, for example, 85 DEG C, 86 DEG C, 87 DEG C, 88 DEG C, 89 DEG C, 90 DEG C, 91 DEG C, 92
DEG C, 93 DEG C, 94 DEG C or 95 DEG C.
Mixing time it is typical but non-limiting be, for example, 13min, 14min, 15min, 16min, 17min, 18min,
19min or 20min.
Extrusion temperature it is typical but non-limiting be, for example, 120 DEG C, 130 DEG C, 140 DEG C, 150 DEG C, 160 DEG C, 170 DEG C or
180℃。
Preferably, mixing temperature is 88-90 DEG C, mixing time 15-16min, and extrusion temperature is 150-160 DEG C.；
Preferably, the mulch is with a thickness of 8 ± 0.2 μm, and preferably 8 ± 0.1 μm.
Typical but non-limiting ground film thickness is, for example, 7.8 μm, 7.9 μm, 8 μm, 8.1 μm or 8.2 μm.
According to another aspect of the present invention, purposes of the mulch as described above as agricultural mulching.
The Plastic-film disintegration speed is fast, and degradation rate is high, and can provide nitrogen, P elements, potassium element, magnesium elements after degrading
Or at least one of ferro element element, or humic acid is provided, there is certain getting fat effect, and cost is relatively low, is a kind of ring
The mulch of added value is brought after border friendly and degradation.
Below in conjunction with specific embodiments, comparative example and attached drawing, the invention will be further described.
Embodiment 1
A kind of mulch is mainly prepared by the raw material of following parts by weight：50 parts of base-material, 20 parts of degradation agent and fertilizer synergist
4 parts；
Wherein, degradation agent includes biodegradation agent and/or function degradation agent.
Embodiment 2
A kind of mulch is mainly prepared by the raw material of following parts by weight：70 parts of base-material, 10 parts of degradation agent and fertilizer synergist
10 parts；
Wherein, degradation agent includes biodegradation agent and/or function degradation agent.
Embodiment 3
A kind of mulch is mainly prepared by the raw material of following parts by weight：60 parts of base-material, 15 parts of degradation agent and fertilizer synergist
5 parts；
Wherein, degradation agent includes biodegradation agent and/or function degradation agent.
As shown in Figure 1, a kind of preparation method of mulch described in embodiment 1-3, includes the following steps：
(a) base-material, degradation agent and fertilizer synergist are mixed, heats and stir, then is granulated with double screw extruder, constant temperature
It is dry, obtain master batch；
(b) master batch for obtaining step (a) is mixed with base-material, is granulated with double screw extruder, and film is blow molded into, permanent
Temperature is dry, obtains mulch；
Wherein, mixing temperature is 85-95 DEG C, mixing time 13-20min, extrusion temperature 120- in the step (a)
180℃；
Extrusion temperature is 120-180 DEG C in the step (b)；
The mulch is with a thickness of 8 ± 0.2 μm.
As shown in Fig. 2, a kind of another preparation method of mulch described in embodiment 1-3, includes the following steps：
Base-material, degradation agent and fertilizer synergist are mixed, heats and stirs, then be granulated with double screw extruder, is blow molded into
Film, freeze-day with constant temperature obtain mulch；
Wherein, mixing temperature is 85-95 DEG C, mixing time 13-20min, and extrusion temperature is 120-180 DEG C；
The mulch is with a thickness of 8 ± 0.2 μm.
Embodiment 4
A kind of mulch is mainly prepared by the raw material of following parts by weight：50 parts of polyethylene, 20 parts of potassium humate and neighbour
4 parts of phthalic acid potassium sodium；
The preparation method of mulch as described above, includes the following steps：
(a) polyethylene, potassium humate and phthalic acid potassium sodium mixing, heat and stir, then with double screw extruder into
Row is granulated, and freeze-day with constant temperature obtains master batch；
(b) master batch for obtaining step (a) is mixed with polyethylene, is granulated with double screw extruder, and film is blow molded into,
Freeze-day with constant temperature obtains mulch；
Wherein, mixing temperature is 85 DEG C, mixing time 20min in step (a), and extrusion temperature is 120 DEG C；
Extrusion temperature is 120 DEG C in the step (b)；
The mulch is with a thickness of 7.8 μm.
Embodiment 5
A kind of mulch is mainly prepared by the raw material of following parts by weight：70 parts of polypropylene, 5 parts of Humic acid Magnesium, cheese
3 parts of element, 2 parts of hydrophobin and 10 parts of formic acid ferrocene；
The preparation method of mulch as described above, includes the following steps：
(a) polypropylene, Humic acid Magnesium, casein, hydrophobin and formic acid ferrocene mixing, heat and stir, then with pair
Screw extruder is granulated, and freeze-day with constant temperature obtains master batch；
(b) master batch for obtaining step (a) is mixed with polypropylene, is granulated with double screw extruder, and film is blow molded into,
Freeze-day with constant temperature obtains mulch；
Wherein, mixing temperature is 95 DEG C, mixing time 13min in step (a), and extrusion temperature is 180 DEG C；
Extrusion temperature is 180 DEG C in the step (b)；
The mulch is with a thickness of 8.2 μm.
Embodiment 6
A kind of mulch is mainly prepared by the raw material of following parts by weight：52 parts of polyethylene terephthalate gathers
10 parts of Lanthanum Isopropoxide, 5 parts of amino modified starch, 4 parts of oil cake powder of fermentation, 2 parts of Potassium Hydrogen Phthalate and formic acid ferrocene 3
Part.
The preparation method of mulch as described above, includes the following steps：
By polyethylene terephthalate, polydioxanone, amino modified starch, fermentation oil cake powder, adjacent benzene two
First potassium hydrogen phthalate and the mixing of formic acid ferrocene, heat and stir, then be granulated with double screw extruder, be blow molded into film, constant temperature
It is dry, obtain mulch；
Wherein, mixing temperature is 87 DEG C, mixing time 18min, and extrusion temperature is 130 DEG C, and mulch is with a thickness of 7.85 μm.
Embodiment 7
A kind of mulch is mainly prepared by the raw material of following parts by weight：68 parts of polyethylene, 6 parts of Humic acid Magnesium, fermentation
4.5 parts of 5 parts of oil cake powder, 4.5 parts of formic acid ferrocene and phthalic acid potassium sodium.
The preparation method of mulch as described above, includes the following steps：
Polyethylene, Humic acid Magnesium, fermentation oil cake powder, formic acid ferrocene and phthalic acid potassium sodium are mixed, heats and stirs
It mixes, then is granulated with double screw extruder, be blow molded into film, freeze-day with constant temperature obtains mulch；
Wherein, mixing temperature is 92 DEG C, mixing time 14min, and extrusion temperature is 170 DEG C, and mulch is with a thickness of 8.15 μm.
Embodiment 8
A kind of mulch is mainly prepared by the raw material of following parts by weight：55 parts of polyethylene terephthalate gathers
6 parts of Lanthanum Isopropoxide, 6 parts of Humic acid Magnesium, 6 parts of oil cake powder of fermentation and 1 part of Potassium Hydrogen Phthalate, phthalic acid potassium sodium 2
Part, 2 parts of formic acid ferrocene and 2 parts of ammonium polyphosphate.
The preparation method of mulch as described above, includes the following steps：
By polyethylene terephthalate, polydioxanone, Humic acid Magnesium, fermentation oil cake powder, phthalic acid
Hydrogen potassium, phthalic acid potassium sodium, formic acid ferrocene and ammonium polyphosphate mixing, heat and stir, then carried out with double screw extruder
It is granulated, is blow molded into film, freeze-day with constant temperature obtains mulch；
Wherein, mixing temperature is 88 DEG C, mixing time 16min, and extrusion temperature is 150 DEG C, and mulch is with a thickness of 7.9 μm.
Embodiment 9
A kind of mulch is mainly prepared by the raw material of following parts by weight：65 parts of polypropylene, polydioxanone 5
Part, 1 part of potassium humate, 1 part of Humic acid Magnesium, 1 part of calcium humate and 4 parts of oil cake powder of fermentation, 2 parts of Potassium Hydrogen Phthalate, adjacent benzene
2 parts of potassium diformate sodium, 2 parts of formic acid ferrocene and 2 parts of ammonium polyphosphate.
The preparation method of mulch as described above, includes the following steps：
By polypropylene, polydioxanone, potassium humate, Humic acid Magnesium, 1 part of calcium humate and fermentation oil cake powder, neighbour
Potassium hydrogen phthalate, phthalic acid potassium sodium, formic acid ferrocene and ammonium polyphosphate mixing, heat and stir, then squeezed with twin-screw
Machine is granulated out, is blow molded into film, and freeze-day with constant temperature obtains mulch；
Wherein, mixing temperature is 90 DEG C, mixing time 16min, and extrusion temperature is 160 DEG C, and mulch is with a thickness of 8 μm.
Comparative example 1
A kind of mulch is mainly prepared by the raw material of following parts by weight：80 parts of polyethylene, 30 parts of potassium humate and neighbour
1 part of phthalic acid potassium sodium.
Mulch is prepared according to the preparation method of embodiment 4.
As different from Example 4, in this comparative example the content of base-material, degradation agent and fertilizer synergist not in right of the present invention
It is required that within 1 scope of the claimed.
Comparative example 2
A kind of mulch is mainly prepared by the raw material of following parts by weight：80 parts of polyethylene, 1 part of potassium humate and neighbour
0.5 part of phthalic acid potassium sodium.
Mulch is prepared according to the preparation method of embodiment 4.
As different from Example 4, in this comparative example the content of base-material, degradation agent and fertilizer synergist not in right of the present invention
It is required that within 1 scope of the claimed.
Comparative example 3
A kind of mulch is mainly prepared by the raw material of following parts by weight：52 parts of polyethylene terephthalate, neighbour
2 parts and 3 parts of formic acid ferrocene of potassium hydrogen phthalate.
Mulch is prepared according to the preparation method of embodiment 6.
As different from Example 6, the mulch of this comparative example preparation does not add degradation agent.
Comparative example 4
A kind of mulch is mainly prepared by the raw material of following parts by weight：68 parts of polyethylene, 6 parts of Humic acid Magnesium and hair
5 parts of ferment oil cake powder.
Mulch is prepared according to the preparation method of embodiment 7.
As different from Example 7, the mulch of this comparative example preparation does not add fertilizer synergist.
Comparative example 5
A kind of mulch, is mainly made by polyethylene terephthalate.
Mulch is prepared according to the preparation method of embodiment 8.
Comparative example 6
A kind of preparation method of mulch, except mixing temperature be 60 DEG C, mixing time 10min, extrusion temperature be 100 DEG C with
Outside, other steps are same as Example 9.
Test example
The mulch that embodiment and comparative example is obtained is applied to crops, does not apply fertilizer, carries out Plastic-film disintegration time, drop
Solution rate and the test of crop growth situation, test result are as shown in Table 1.
One Plastic-film disintegration time of table, degradation rate and crop growth situation test result
As can be seen from table 1, the mulch that embodiment 1-9 is prepared by adding degradation agent and fertilizer synergist in base-material,
Degradation time is 15-44 days, meets the requirement of mulch service life, and degradation rate with higher, up to 99% or more, mulch
Nutrient can be provided after degradation for crops, promote crop growth, crop growth is good.
As different from Example 4, the content of base-material, degradation agent and fertilizer synergist is not in this hair in comparative example 1 for comparative example 1
Within bright claim 1 scope of the claimed, and degradation agent additive amount is larger, the Plastic-film disintegration rate being prepared compared with
Fastly, the requirement of mulch service life is not met, crop growth is general.
As different from Example 4, the content of base-material, degradation agent and fertilizer synergist is not in this hair in comparative example 2 for comparative example 2
Within bright claim 1 scope of the claimed, degradation agent content is lower, and the Plastic-film disintegration rate being prepared is slower, is not inconsistent
The requirement of mulch service life is closed, degradation rate is low, and crop growth is general.
As different from Example 6, comparative example 3 does not add degradation agent to comparative example 3, and the mulch of preparation is undegraded, and agriculture
Plant growth is bad.As different from Example 7, comparative example 4 does not add fertilizer synergist to comparative example 4, and obtained mulch is unfavorable for agriculture
The growth of crop, crop growth are bad.
Mulch prepared by comparative example 5, does not add degradation agent and fertilizer synergist, and the mulch prepared can not degrade, and hinders agriculture
Crop root growth, crop growth is bad, and generates biggish Soil Environmental Pollution.
The preparation method of mulch in comparative example 6, except mixing temperature is 60 DEG C, mixing time 10min, extrusion temperature is
Other than 100 DEG C, other steps are same as Example 9, the mulch that obtained mulch obtains in terms of degradation rate not as good as embodiment 1-9
Degradation rate it is high, degradation is not thorough.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that：Its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of mulch, which is characterized in that the mulch is mainly prepared by the raw material of following parts by weight：Base-material 50-70
Part, 10-20 parts of degradation agent and 4-10 parts of fertilizer synergist；
Wherein, degradation agent includes biodegradation agent and/or function degradation agent.
2. mulch according to claim 1, which is characterized in that the mulch is mainly prepared by the raw material of following parts by weight
It obtains：
55-65 parts of base-material, 12-18 parts of degradation agent and 6-9 parts of fertilizer synergist；
Preferably, the mulch is mainly prepared by the raw material of following parts by weight：
58-60 parts of base-material, 15-16 parts of degradation agent and 7-8 parts of fertilizer synergist.
3. mulch according to claim 1, which is characterized in that the biodegradation agent include potassium humate, Humic acid Magnesium,
At least one of calcium humate, fermentation oil cake powder, casein and hydrophobin.
4. mulch according to claim 1, which is characterized in that the function degradation agent includes polydioxanone, two
At least one of luxuriant iron and amino modified starch.
5. mulch according to claim 1, which is characterized in that the fertilizer synergist includes Potassium Hydrogen Phthalate, adjacent benzene two
At least one of potassium formate sodium, formic acid ferrocene and ammonium polyphosphate；
Preferably, the base-material includes at least one of polyethylene, polypropylene and polyethylene terephthalate.
6. the preparation method of mulch according to claim 1-5, which is characterized in that mainly include the following steps that：
Base-material, degradation agent and fertilizer synergist are mixed, master batch is prepared, then master batch is mixed with base-material, prepares mulch；
Alternatively, directly mixing base-material, degradation agent and fertilizer synergist, mulch is prepared.
7. the preparation method of mulch according to claim 6, which is characterized in that mainly include the following steps that：
(a) base-material, degradation agent and fertilizer synergist are mixed, heats and stir, then is granulated with double screw extruder, constant temperature is dry
It is dry, obtain master batch；
(b) master batch for obtaining step (a) is mixed with base-material, is granulated with double screw extruder, and film is blow molded into, and constant temperature is dry
It is dry, obtain mulch.
8. the preparation method of mulch according to claim 7, which is characterized in that mixing temperature is 85- in the step (a)
95 DEG C, mixing time 13-20min, extrusion temperature is 120-180 DEG C；
Preferably, mixing temperature is 88-90 DEG C, mixing time 15-16min, extrusion temperature 150- in the step (a)
160℃；
Preferably, extrusion temperature is 120-180 DEG C in the step (b)；
Preferably, extrusion temperature is 150-160 DEG C in the step (b)；
Preferably, the mulch is with a thickness of 8 ± 0.2 μm, and preferably 8 ± 0.1 μm.
9. the preparation method of mulch according to claim 7, which is characterized in that the preparation method of the mulch includes following
Step：
Base-material, degradation agent and fertilizer synergist are mixed, heats and stirs, then be granulated with double screw extruder, be blow molded into film,
Freeze-day with constant temperature obtains mulch；
Preferably, mixing temperature is 85-95 DEG C, mixing time 13-20min, and extrusion temperature is 120-180 DEG C；
Preferably, mixing temperature is 88-90 DEG C, mixing time 15-16min, and extrusion temperature is 150-160 DEG C；
Preferably, the mulch is with a thickness of 8 ± 0.2 μm, and preferably 8 ± 0.1 μm.
10. purposes of the described in any item mulches of claim 1-5 as agricultural mulching.
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Cited By (1)
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| CN112852059A (en) * | 2021-02-23 | 2021-05-28 | 靖江市康高特新材料科技有限公司 | Biological degradation agent and preparation method thereof |
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