CN106947157A - A kind of degradable nano water conservation mulch film and preparation method thereof - Google Patents
A kind of degradable nano water conservation mulch film and preparation method thereof Download PDFInfo
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0268—Mats or sheets, e.g. nets or fabrics
- A01G13/0275—Films
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/018—Additives for biodegradable polymeric composition
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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
- 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
- C08L2205/03—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
Abstract
The invention discloses a kind of degradable nano water conservation mulch film and preparation method thereof, it is prepared from by the component of following parts by weight：Nano-meter CaCO3310~15 parts, nano-TiO21~5 part of 5~10 parts, 10~20 parts of polyvinyl alcohol, 15~25 parts of polypropylene, 2~3 parts of PLA, 12~27 parts of straw biomass charcoal, 10~20 parts of MP3005 water-loss reducers, 3~5 parts of liquid of EM expansions, 15~26 parts of composite elasticizer, 5~12 parts of biodegradation promotor, 2.8~5 parts of light trigger and starch adhesive.Preparation technology of the present invention is simple, cost is relatively low, the degradation rate of mulch film can be improved, residue can be absorbed by edaphon after degraded, both plant growth is effectively facilitated, avoid causing the straw biomass charcoal contained in secondary pollution, mulch film, MP3005 water-loss reducers and EM to expand after the ingredient degradations such as liquid and soil texture and permeability being effectively improved again, reduce soil aciditiy, increase microbial activity, improve soil water-reataining fertilizer-keeping ability.
Description
Technical field
The invention belongs to agricultural environmental protection, soil improvement and water conservation drought resisting field, more particularly to a kind of degradable nano is protected
Water mulch film and preparation method thereof.
Background technology
Agricultural water accounts for 70% or so of national water total amount, and agriculture about 30,000,000,000 cubes of year water shortage, and water resource remains unchanged
One of shortage, the key factor already as restriction China's agricultural development, rational utilization of water resources develops efficient preserving soil moisture skill
Art is the fundamental way of agricultural modernization development.
In recent years, people increasingly pay attention to the protection to environment, in the agricultural production of China, in order to economize on water, water conservation, guarantor
Temperature, agricultural film is widely used, such as：In nursery, seedbed needs covering with plastic film to reach the purpose of insulation, moisturizing；Part dry farming
Crop on mulch film, it is necessary to punch plantation, such as watermelon, tobacco；Chamber planting also is also required to overlay film for water conservation insulation
Plantation.Once but germination emerges in nursery, timely to take mulch film off, otherwise, it is easy to which high temperature scalds seedling.And
Agricultural film also just loses effect, the problem of thing followed is exactly agricultural film waste pollution after crop maturity harvest.Now
Conventional is the agricultural mulching being made with chemical substances such as polyethylene, polypropylene on the market, except with functions such as insulation, weedings
Outside, it also there are problems that poor durability, intensity be high, degraded difficulty is big.Due to it is difficult to degrade, and it can not reclaim
Secondary to use, a large amount of mulch film fragments can be remained in soil, can not only destroy soil texture, are influenceed plant growth and are caused to subtract
Production, can also cause Heavy environmental pollution.Also there are many researchs on degradable mulch at present, be to pay close attention to dropping for agricultural film mostly
Xie Xing, raising degradation speed, and use different tensile strength, light transmittance and thickness of chemical substances proportioning raising agricultural film etc.
Case study, for after the degraded of agricultural film to not studied preferably in terms of the influence of soil.
Therefore, the production technology and methods for using them of mulch film is currently need to improve, film material, which should be selected, has mulch film effect,
And degradable material after use, while composition is nontoxic, harmless, free from environmental pollution after degraded, and is conducive to improved soil, ploughs
Make and plant.How soil water resources are rationally utilized, develop degradable water conservation mulch film, solve film for agricultural use pollution, effectively
Increase soil moisture to keep, improved soil, the problems such as improving the utilization ratio of agricultural water resources, will be development Modern Water Saving Agriculture
With the effective way for solving China's film for agricultural use and waste pollution.
The content of the invention
Goal of the invention：The present invention provides a kind of degradable nano water conservation mulch film and preparation method thereof, it is intended to solves agricultural and uses
Fouling membrane, water retention is poor, soil acidification, and enzymatic activity is low and the low problem of utilization ratio of water resource.
Technical scheme：To realize above-mentioned technical purpose, the invention provides a kind of degradable nano water conservation mulch film, it is described can
Degraded nanometer water conservation mulch film is prepared from by the component of following parts by weight：
Nano-meter CaCO3310~15 parts, nano-TiO25~10 parts, it is 10~20 parts of polyvinyl alcohol, 15~25 parts of polypropylene, poly-
2~3 parts of lactic acid, 12~27 parts of straw biomass charcoal, 10~20 parts of MP3005 water-loss reducers, EM expand 3~5 parts of liquid, molasses 1~3
Part, 15~26 parts of composite elasticizer, 5~12 parts of biodegradation promotor, 2.8~5 parts of light trigger and starch adhesive 1~5
Part.
Present invention further proposes the preparation method of above-mentioned degradable nano water conservation mulch film, comprise the following steps：
(1) with Nano-meter CaCO3310~15 parts, EM expands 3~5 parts of liquid, 1~3 part of molasses, nano-TiO25~10 parts are original
Material fermentation, fermentation temperature is 25~32 DEG C, and fermentation time is 7-12 days, obtains zymotic fluid A；
(2) polyvinyl alcohol, polypropylene, poly- breast of corresponding formula ratio are added in the zymotic fluid A that will be obtained again in step (1)
Acid, MP3005 water-loss reducers and straw biomass charcoal are mixed into agitator, are stirred 15~20 minutes, 1000~1800r/min is obtained
Mixture B；
(3) starch adhesive of corresponding formula ratio and compound plasticising are added in the mixture B that will be obtained again in step (2)
Agent, with 100~200r/min of rotating speed in double screw extruder, compound extruded obtains thermoplasticity and received at 150 DEG C~170 DEG C of temperature
Rice complexing agent C；
(4) by the biodegradation promotor of formula ratio, light trigger be uniformly mixed into step (3) obtain thermoplastic nanofibers answer
In mixture C, it is well mixed under conditions of 50~100r/min, with general-purpose plastics inflation film manufacturing machine blown film, setting speed is 15~
Hot-melt extruded is blow molded under the conditions of 30r/min, 150~185 DEG C of temperature, is made mulch film, and cutting, packaging are made described and degradable received
Meter Bao Shui mulch films.
Described degradable nano water conservation mulch film, its application method is, is soaked in mulch film before using mulch film described
In the zymotic fluid A of preparation, soak time can be set according to the surface temperature to be laid, when surface temperature is less than 25 DEG C, immersion 1
~3 days.When surface temperature is more than 25 DEG C, soak 2~6 days.
Preferably, the Nano-meter CaCO33Particle diameter be 25~100nm, nano-TiO2Particle diameter be 20~50nm.
Described EM expand liquid by EM stostes, molasses, deionized water according to volume ratio be 0.7~1: 0.6~0.8: 2.1~
Obtained after 2.5 mixed fermentations, fermentation temperature is 32~35 DEG C, fermentation time is 8-10 days.
Wherein, the straw biomass charcoal is to crop straw under anoxic or hypoxia condition with lower temperature (700 DEG C of ＜)
The biomass such as stalk be pyrolyzed and produced it is carbon containing extremely enrich, stably, the solid matter of height aromatization, can directly buy in
Jiangsu Hua Feng agro-biological engineerings Co., Ltd.
Preferably, the biodegradation promotor is BiofillerTM。
Specifically, PLA used is biodegradation material PLA；The light trigger is water-soluble photoinitiator (WSP),
Mainly include benzophenone derivative and alkyl arone derivative.
Described water-loss reducer is " water " board water-loss reducer.
Described composite elasticizer is the plasticizer that composition is wanted based on chlorinated aliphatic acid esters, be can purchase in Shandong day into change
Work Co., Ltd.Starch adhesive is, using Ipomoea batatas, wheaten starch as the adhesive of main component, to can purchase in Luohe City Hui Spring glue
Stick Co., Ltd.
Beneficial effect：Compared with prior art, the invention has the advantages that：
(1) the degradable novel nano water conservation mulch film configured in the present invention, can improve the degradation rate of mulch film, effectively promote
Enter plant growth；
(2) this degradable novel nano water conservation mulch film is used, residue can be absorbed by edaphon after degraded, be kept away
Exempt to cause secondary pollution to environment；
(3) soil texture and permeability can be effectively improved by expanding liquid containing straw biomass charcoal and EM in mulch film of the present invention, be dropped
Low soil aciditiy, increases microbial activity, improves soil water-reataining fertilizer-keeping ability；
(4) nanometer calcium contained in mulch film of the present invention, it is the plain nutrition of crop supplement calcium that available state calcium is changed into after degraded；
(5) degradable novel nano water conservation mulch film preparation technology is simple in the present invention, cost is relatively low.
Brief description of the drawings
Fig. 1 is vega 0-20cm soil layer soil moisture content transformations；
Fig. 2 is characteristic curve of soil moisture.
Embodiment
The present invention is described in detail below by specific embodiment.
A kind of preparation method of degradable nano water conservation mulch film is present embodiments provided, is comprised the following steps：
(1) with Nano-meter CaCO3310~15 parts, EM expands 3~5 parts of liquid, 1~3 part of molasses, nano-TiO25~10 parts are original
Material fermentation, fermentation temperature is 25~32 DEG C, and fermentation time is 7-12 days, obtains zymotic fluid A.
(2) added in the zymotic fluid A that will be obtained in step (1) polyvinyl alcohol of corresponding formula ratio, polypropylene, PLA,
MP3005 water-loss reducers and straw biomass charcoal are mixed into agitator, are stirred 15~20 minutes, 1000~1800r/min is mixed
Compound B；
(3) starch adhesive of corresponding formula ratio and compound plasticising are added in the mixture B that will be obtained again in step (2)
Agent, with 100~200r/min of rotating speed in double screw extruder, compound extruded obtains thermoplasticity and received at 150 DEG C~170 DEG C of temperature
Rice complexing agent C；
(4) by the biodegradation promotor of formula ratio, light trigger be uniformly mixed into step (3) obtain thermoplastic nanofibers answer
In mixture C, it is well mixed under conditions of 50~100r/min, with general-purpose plastics inflation film manufacturing machine blown film, setting speed is 15~
Hot-melt extruded is blow molded under the conditions of 30r/min, 150~185 DEG C of temperature, is made mulch film, and cutting, packaging are made described and degradable received
Meter Bao Shui mulch films.
Experiment effect
Experiment is K326 from tobacco bred exemplified by planting tobacco.Experiment is in Nanjing Jiangning District Nanjing
Carried out in lysimeter in vegetable or flower Science Institute.Local average annual rainfall number of days 117d, annual rainfall 1106.5mm, often
Late June to July in year is plum rain season, 15.7 DEG C of year-round average temperature, maximum medial humidity 81%, maximum wind velocity 19.8m/s, nothing
Frost season 237d.Experiment using under-film drip irrigation and furrow irrigation two kinds of irrigation methods, wherein mulch film used by under-film drip irrigation be common ground film and
Mulch film, is soaked in the zymotic fluid A of the preparation by the degradable water conservation mulch film of nanometer before using mulch film, is soaked 1~3 day, is taken
Go out overlay film.
The preparation of different ratio mulch film：
It is formulated (one)：(1) by 15% Nano-meter CaCO33, 5% EM expansion liquid, 3% molasses, 10% nano-TiO2It is mixed
Fermentation is closed, fermentation temperature is 25~32 DEG C, and fermentation time is 7-12 days, obtains zymotic fluid A.(2) it will add in obtained zymotic fluid A
Enter 20% polyvinyl alcohol of corresponding formula ratio, 25% polypropylene, 3% PLA, 10% MP3005 water-loss reducers and
20% straw biomass charcoal is mixed into agitator, is stirred 20 minutes, 1800r/min obtains mixture B；(3) it will obtain again
The starch adhesive and composite elasticizer of corresponding formula ratio are added in mixture B, with rotating speed 200r/ in double screw extruder
Compound extruded obtains thermoplastic nanofibers' complexing agent C at min, 170 DEG C of temperature；(4) biodegradation promotor of formula ratio, light are drawn
Hair agent is uniformly mixed into thermoplastic nanofibers' complexing agent C, is well mixed under conditions of 100r/min, is used general-purpose plastics inflation film manufacturing machine
Blown film, setting speed is hot-melt extruded blowing under the conditions of 30r/min, 180 DEG C of temperature, and mulch film is made, and institute is made in cutting, packaging
State degradable nano water conservation mulch film.
It is formulated (two)：(1) by 15% Nano-meter CaCO33, 5% EM expansion liquid, 3% molasses, 10% nano-TiO2It is mixed
Fermentation is closed, fermentation temperature is 25~32 DEG C, and fermentation time is 7-12 days, obtains zymotic fluid A；(2) it will add in obtained zymotic fluid A
Enter 20% polyvinyl alcohol of corresponding formula ratio, 25% polypropylene, 3% PLA, 20% MP3005 water-loss reducers and
25% straw biomass charcoal is mixed into agitator, is stirred 20 minutes, 1800r/min obtains mixture B；(3) it will obtain again
The starch adhesive and composite elasticizer of corresponding formula ratio are added in mixture B, with rotating speed 200r/ in double screw extruder
Compound extruded obtains thermoplastic nanofibers' complexing agent C at min, 170 DEG C of temperature；(4) biodegradation promotor of formula ratio, light are drawn
Hair agent is uniformly mixed into thermoplastic nanofibers' complexing agent C, is well mixed under conditions of 100r/min, is used general-purpose plastics inflation film manufacturing machine
Blown film, setting speed is hot-melt extruded blowing under the conditions of 30r/min, 180 DEG C of temperature, and mulch film is made, and institute is made in cutting, packaging
State degradable nano water conservation mulch film.
Four processing of Setup Experiments, be respectively：
T1, not control, overlay film, are irrigated by the way of furrow irrigation, single irrigation quantity 4.5m3/ mu, the time of infertility pours water
Total amount is 337mm；
T2, common ground film, are irrigated by the way of under-film drip irrigation, single irrigation quantity 4.5m3/ mu, the time of infertility fills
Water inventory is 337mm；
T3, the degradable nano mulch film prepared with formula (one), are irrigated, single is poured water by the way of under-film drip irrigation
Measure 4.5m3/ mu, the time of infertility pours water total amount for 337mm；
T4, the degradable nano mulch film prepared with formula (two), are irrigated, single is poured water by the way of under-film drip irrigation
Measure 4.5m3/ mu, the time of infertility pours water total amount for 337mm.
On May 9th, 2015 transplants K326 tobacco seedlings when 61 heart of leaf, and soil is poured water to field capacity during transplanting, after
Irrigated once by design drip irrigation flow per 2-3 days, the time of infertility irrigates 40 times altogether.
Taken root phase, prosperous long-term, maturity period 0-20cm soil moisture content, flue-cured tobacco economical character and production by determining flue-cured tobacco respectively
The indexs such as amount, analysis degradable nano water conservation mulch film observes Plastic-film disintegration situation to effects such as flue-cured tobacco water conservation moisturizing volume increase, leads to
The measure of tobacco-growing soil water characteristic curve is crossed, degradable nano mulch film Effect of improving soil is analyzed.
Table 1, table 2, table 3 are respectively to stretch root phase, prosperous long-term, each economical character index of maturity period flue-cured tobacco and determination of yield knot
Really.
The flue-cured tobacco of table 1 stretches the root phase
The flue-cured tobacco of table 2 is prosperous long-term
The flue-cured tobacco maturity period of table 3
As can be seen from the table, flue-cured tobacco is stretched the root phase, and aluminum coated steel is superior to control treatment, and degradable nano water conservation mulch film is slightly
Better than normal film, the degradable nano water conservation mulch film prepared by formula (two) is slightly better than prepared by formula (one)；And in flue-cured tobacco
In the prosperous long-term and maturity period, the flue-cured tobacco economical character of degradable nano water conservation covering with ground sheeting is substantially better than common ground film；Compared with T1 and
T2 processing, T3 processing output increaseds 33.47% and 9.3%；Compared with T1, T2 and T3 processing, T4 processing output increased 36.06%,
12.80% and 3.8%, it is seen that the economical character and yield of flue-cured tobacco are remarkably improved using degradable nano water conservation mulch film, and can
MP3005 water-loss reducers and straw biomass charcoal play main function in degraded nanometer mulch film raw material ratio.
7d, 21d, 35d, 49d, 63d, 77d, 91d and 105d soil moisture content transformation situation is such as after transplanting for 0-20cm soil layers
Shown in Fig. 1, as a result show T4 volumetric soil water contents be about 22%~26%, T3 volumetric soil water contents be about 20%~
25%, hence it is evident that higher than T2 and T1, T2 processing is higher than T1, and T4 handles a little higher than T3, it is seen that overlay film can improve soil volume of aqueous
Rate.Therefore, common ground film is substantially better than using degradable its Water-saving effect of water conservation mulch film of the invention, and it is made using formula (two)
Standby degradable nano water conservation mulch film is slightly better than prepared by formula (one).
Compared to T1 and T2 processing it can be seen from Fig. 2 characteristic curve of soil moisture, T3 processing water retention in soil is carried
High 20.03% and 15.67%；Compared to T1, T2 and T3 processing, T4 processing water retention in soil improves 22.49%, 17.23%
With 1.84%, it is seen that good water retention can be served to plant growth using the present invention.Therefore, it is degradable using the present invention
Nanometer water conservation mulch film can be effectively improved soil texture, increase soil porosity, raising soil water-reataining fertilizer-keeping ability.
Determined according to experiment, degradable nano water conservation mulch film, be 13.8% transplanting 30 days degradation rates, dropped after transplanting 90 days
Solution 50%, degrades after 97.5%, 180 days after transplanting 160 days and does not see obvious mulch film fragment substantially.Over time
Film can all degrade, and have to soil obvious improving effect.
In summary, degradable nano water conservation mulch film provided in an embodiment of the present invention and preparation method thereof, the mulch film has
Insulation, the effect of water conservation, effectively facilitate plant growth ability.And in mulch film containing straw biomass charcoal, MP3005 water-loss reducers and
EM, which expands liquid, can be effectively improved soil texture, reduce soil aciditiy, increase soil porosity, microbial activity improve soil and protected
Outlet capacity, it is to avoid secondary pollution is caused to environment.And the preparation of the mulch film and application process are simple and convenient, reduce and are produced into
This.
A kind of degradable nano water conservation mulch film provided by the present invention and preparation method thereof is described in detail above,
And apply specific experiment degradable nano water conservation mulch film embodiment of the present invention and test effect are set forth, the above is real
The explanation for applying example is only intended to help and understands the method for the present invention and its core concept；Simultaneously for the general technology of this area
Personnel, according to the thought of the present invention, will change, this specification content is not in specific embodiments and applications
It is interpreted as limitation of the present invention.
Claims (9)
1. a kind of degradable nano water conservation mulch film, it is characterised in that the degradable nano water conservation mulch film is by following parts by weight
Component be prepared from：
Nano-meter CaCO3310~15 parts, nano-TiO25~10 parts, 10~20 parts of polyvinyl alcohol, 15~25 parts of polypropylene, PLA
2~3 parts, 12~27 parts of straw biomass charcoal, 10~20 parts of MP3005 water-loss reducers, EM expand 3~5 parts of liquid, it is 1~3 part of molasses, multiple
Close 1~5 part of 15~26 parts of plasticizer, 5~12 parts of biodegradation promotor, 2.8~5 parts of light trigger and starch adhesive.
2. the preparation method of the degradable nano water conservation mulch film described in claim 1, it is characterised in that comprise the following steps：
(1) with Nano-meter CaCO3310~15 parts, EM expands 3~5 parts of liquid, 1~3 part of molasses, nano-TiO25~10 parts are that raw material is sent out
Ferment, fermentation temperature is 25~32 DEG C, and fermentation time is 7~12 days, obtains zymotic fluid A；
(2) added in the zymotic fluid A that will be obtained again in step (1) polyvinyl alcohol of corresponding formula ratio, polypropylene, PLA,
MP3005 water-loss reducers and straw biomass charcoal are mixed into agitator, are stirred 15~20 minutes, 1000~1800r/min is mixed
Compound B；
(3) starch adhesive and composite elasticizer of corresponding formula ratio are added in the mixture B that will be obtained again in step (2),
With 100~200r/min of rotating speed in double screw extruder, at 150 DEG C~170 DEG C of temperature compound extruded obtain thermoplastic nanofibers answer
Mixture C；
(4) biodegradation promotor of formula ratio, light trigger are uniformly mixed into step (3) and obtain thermoplastic nanofibers' complexing agent
In C, it is well mixed under conditions of 50~100r/min, with general-purpose plastics inflation film manufacturing machine blown film, setting speed is 15~30r/
Hot-melt extruded is blow molded under the conditions of min, 150~185 DEG C of temperature, and mulch film is made, and cutting, packaging are made the degradable nano and protected
Water mulch film.
3. preparation method according to claim 2, it is characterised in that mulch film is soaked in the preparation before using mulch film
Zymotic fluid A in, soak time can be set according to the surface temperature to be laid, when surface temperature is less than 25 DEG C, soak 1-3
My god；When surface temperature is more than 25 DEG C, soak 2-6 days.
4. preparation method according to claim 2, it is characterised in that the Nano-meter CaCO33Particle diameter be 25~100nm, receive
Rice TiO2Particle diameter be 20~50nm.
5. preparation method according to claim 2, it is characterised in that described EM expand liquid by EM stostes, molasses, go from
Sub- water after 0.7~1: 0.6~0.8: 2.1~2.5 mixed fermentations according to volume ratio to obtain, and fermentation temperature is 32~35 DEG C, hair
The ferment time is 8-10 days.
6. preparation method according to claim 2, it is characterised in that the biodegradation promotor is BiofillerTM。
7. preparation method according to claim 2, it is characterised in that PLA is biodegradation material PLA；The light draws
Hair agent is water-soluble photoinitiator, mainly includes benzophenone derivative and alkyl arone derivative.
8. preparation method according to claim 2, it is characterised in that described composite elasticizer is with chlorinated aliphatic acid esters
For the plasticizer of main component.
9. preparation method according to claim 2, it is characterised in that described water-loss reducer is " water " board water-loss reducer.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108396559A (en) * | 2018-02-05 | 2018-08-14 | 广西大学 | A kind of bagasse base film and preparation method thereof |
| CN109197283A (en) * | 2018-09-08 | 2019-01-15 | 佛山市森昂生物科技有限公司 | A kind of preparation method of degradable water conservation mulch |
| CN110591730A (en) * | 2019-09-11 | 2019-12-20 | 大连农研生物科技有限公司 | Preparation method of chitosan oligosaccharide biochar liquid mulching film |
| CN111844828A (en) * | 2020-07-27 | 2020-10-30 | 朱林 | Method for manufacturing rice seedling raising seed covering film |
| CN114456562A (en) * | 2022-02-22 | 2022-05-10 | 深圳潘道医学检验实验室 | Degradable virus sampling tube and preparation method thereof |
| CN114560746A (en) * | 2022-04-13 | 2022-05-31 | 浙江大学 | Composite nano foliar fertilizer, preparation method thereof and method for improving tobacco quality |
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| CN1415698A (en) * | 2001-10-30 | 2003-05-07 | 中国石油化工股份有限公司 | Liquid mulching film and its producing method |
| CN103265730A (en) * | 2013-05-23 | 2013-08-28 | 苏州富通高新材料科技股份有限公司 | Degradable film containing starch and preparation method of degradable film |
| CN104311886A (en) * | 2014-09-30 | 2015-01-28 | 王信伟 | Agricultural liquid mulching film and production method thereof |
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| CN1415698A (en) * | 2001-10-30 | 2003-05-07 | 中国石油化工股份有限公司 | Liquid mulching film and its producing method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108396559A (en) * | 2018-02-05 | 2018-08-14 | 广西大学 | A kind of bagasse base film and preparation method thereof |
| CN109197283A (en) * | 2018-09-08 | 2019-01-15 | 佛山市森昂生物科技有限公司 | A kind of preparation method of degradable water conservation mulch |
| CN110591730A (en) * | 2019-09-11 | 2019-12-20 | 大连农研生物科技有限公司 | Preparation method of chitosan oligosaccharide biochar liquid mulching film |
| CN111844828A (en) * | 2020-07-27 | 2020-10-30 | 朱林 | Method for manufacturing rice seedling raising seed covering film |
| CN114456562A (en) * | 2022-02-22 | 2022-05-10 | 深圳潘道医学检验实验室 | Degradable virus sampling tube and preparation method thereof |
| CN114560746A (en) * | 2022-04-13 | 2022-05-31 | 浙江大学 | Composite nano foliar fertilizer, preparation method thereof and method for improving tobacco quality |
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