CN109181090A - Dedicated Degradable environment protection mulch of milpa and preparation method thereof - Google Patents
Dedicated Degradable environment protection mulch of milpa and preparation method thereof Download PDFInfo
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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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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- 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
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- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/04—Starch derivatives
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
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- C08K5/49—Phosphorus-containing compounds
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Abstract
The invention belongs to agricultural mulching preparation technical fields, and in particular to a kind of dedicated Degradable environment protection mulch of milpa and preparation method thereof, the raw material including following weight fraction: 90-100 parts of linear low density polyethylene；10-15 parts of low density polyethylene (LDPE)；40-50 parts of modified tapioca starch；7-12 parts of modified nano calcium carbonate；5-10 parts of bagasse powder；2-3 parts of polyvinyl alcohol；0.08-0.2 parts of photosensitizer ferric stearate；0.05-0.1 parts of phosphite type antioxidant；0.3-0.5 parts of thermal degradation promotor；1-3 parts of expanding material；2-5 parts of plasticizer；The dedicated Degradable environment protection mulch of milpa prepared by the present invention is according to the growth rhythm of corn, and combine the climatic factors such as illumination, temperature, introduce photosensitizer ferric stearate, phosphite type antioxidant and thermal degradation promotor, induction period that solves the problems, such as to be difficult to after degradative plastic film buries degrade and degrade is difficult to control, and mulch obtained is degradable, it is environmentally protective, white pollution will not be generated, the pollution to farmland is reduced.
Description
Technical field
The invention belongs to agricultural mulching preparation technical fields, and in particular to a kind of dedicated Degradable environment protection mulch of milpa and
Preparation method.
Background technique
China is a large agricultural country and populous nation, agricultural problem are the grand strategy problems for being related to national economy.Agriculture
It is one of the important material goods of agricultural production with film, agricultural film is the general name of the plastic film applied to agricultural production,
It plays a very important role for moisturizing, the heat preservation of seedtime.Not only have with agricultural mulching covering in agricultural production and protects
The functions such as fertilizer, insect prevention suppression grass, can also keep soil moisture, improve efficiency of water application, while improve crop growth environment, mention
High crop yield and agricultural benefit.Agricultural mulching has become the third-largest means of agricultural production material after agricultural production relaying chemical fertilizer, pesticide
The application of material, ground membrane technology is greatly promoted the raising of farm output and benefit, driven mode of agriculture change and
Agricultural productive force is developed by leaps and bounds.China is a plastic film mulching cultivation big country, by 2005, China's covering with ground sheeting area
Have reached 13,500,000 hectares, mulch usage amount reaches 1,200,000 tons, mulch using covered Xinjiang, Shandong, Shanxi,
The Inner Mongol, Heilungkiang, Shaanxi, the contour cold in Gansu is cool, arid and semi-arid area 40 multiple kinds of crops, and presents and continue
The situation of growth.
But generated discarded film white pollution problems caused by agroecological environment after largely using agricultural mulching
Also it getting worse therewith, common agricultural mulching mostly uses nondegradable polyethylene film, therefore brings many environmental problems,
An important sources of white pollution are not only, great threat also is brought to the sustainable use in arable land.Discarded farming land
Film is generally difficult to recycle, and its residual accumulation will cause soil texture and destroy, be hardened, and the gas permeability of soil is deteriorated, and influences to cultivate.Ground
Over more than 30 years of film large-area applications, the mankind have done many effort, but due to overlay film initial stage to solve the problems, such as used plastic collection
Caused by cover mistake, cause the later period modification mistake when great difficulty so that mulch application in decades, various times of the world
It receives thinking and machinery is all difficult to the problem of residual film pollution is solved perfectly, affect the correct application and large area of film-mulching technique
It promotes, while causing white pollution and the environmental disruption of flood tide.
In order to develop the environment-friend substitution product of non-degradable mulch, grinding for degradable mulch is carried out extensively both at home and abroad
Study carefully.Retrieve relevant document as: with disclosing a kind of double degradation environment protections application No. is the Chinese patent of 201510445118.X
Film and preparation method thereof, the invention are related to a kind of Shuangjing county comprising additive-based degradative plastic film and setting are being added
The compost type degradative plastic film of dosage form degradative plastic film two sides；The invention further relates to its specific formula and preparation method.The invention solution
It is slow that additive-based degradative plastic film of having determined buries native Partial digestion, not environmentally；And compost type degradative plastic film incubation period is short, Wu Faman
The problems such as sufficient crops heat preservation soil moisture conservation requires.For another example, application No. is 201710318883.4 Chinese patents to disclose a kind of drop
The agricultural degradative plastic film and preparation method thereof of time controllably is solved, this method mainly includes that the preparation of premix and blown film two walk greatly
Suddenly, raw material used by the invention preparation method and light stabilizer used by other existing methods, antioxidant compare, degradation suppression
Significant effect processed；Raw material after mixing, blows film forming, blown film temperature is than production common plastics on degradative plastic film Blown-film line
Mulch is 5-8 DEG C low, and the mulch with a thickness of 0.008-0.012mm, growth rhythm of the mulch according to crops, degradation induction tune is made
The control time 45,60,90,120 days.
Degradative plastic film has been done a large amount of as application of the environment protection type functional mulch on corn, peanut, flue-cured tobacco, cotton at present
Research, achieve preferable economic benefit and ecological benefits.Corn is the important industrial crops in China, and corn planting is using ground
Film covering not only has many advantages, such as heat preservation, water-saving, fertilizer conservation, inhibits weed growth, significantly improves emergence rate, and be conducive to mention
Planting early enough shortens green luxuriant Time To Market, to achieve the purpose that increase economic efficiency.But after conventional covering with ground sheeting, take off film
Artificial expense is also needed, corn planting cost is increased, while causing the residual of mulch, to cause white pollution.And
Existing degradative plastic film mainly has Biodegradable mulch, photodegradation film, photoproduction Shuangjing county etc., there are the problem of mainly have
At high cost, degradation is not thorough, degradation time is difficult to control etc..Therefore, the existing generally existing defect of degradative plastic film product, it is difficult to
It is accepted extensively by peasant.Therefore develop a kind of controlled degradation time, degradation thoroughly, the dedicated Degradable environment protection of milpa of low cost
Mulch improves soil quality, guarantee corn yield etc. and has great importance to white pollution is reduced.
Summary of the invention
The purpose of the present invention is to provide dedicated Degradable environment protection mulch of a kind of milpa and preparation method thereof, the milpas
It joined modified tapioca starch, photosensitizer ferric stearate, phosphite type antioxidant and heat in dedicated Degradable environment protection mulch
The substances such as degradation of promoter improve the degradable ability of mulch, are effectively controlled the degradation time of mulch, manufactured mulch
According to the growth rhythm of corn, degrades induction time 70-72 days, meet the needs of corn growth, while reaching the effect of degradation
Fruit is planted using the dedicated Degradable environment protection Plastic mulched corn of the milpa, can reduce the cost of plantation, and it is dirty to reduce white
Dye.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of dedicated Degradable environment protection mulch of milpa, the raw material including following weight fraction:
90-100 parts of linear low density polyethylene；10-15 parts of low density polyethylene (LDPE)；40-50 parts of modified tapioca starch；Modified Nano
7-12 parts of calcium carbonate；5-10 parts of bagasse powder；2-3 parts of polyvinyl alcohol；0.08-0.2 parts of photosensitizer ferric stearate；Phosphite type
0.05-0.1 parts of antioxidant；0.3-0.5 parts of thermal degradation promotor；1-3 parts of expanding material；2-5 parts of plasticizer；
The modified tapioca starch the preparation method comprises the following steps: (1) by tapioca dry 2-3 hours at 100-120 DEG C, obtain
Then tapioca is put into ultrasonator under 80-90MHz ultrasonic vibration 2-3 hours, obtains by dry tapioca
The tapioca of miniaturization: (2) are according to tapioca: water is that the weight ratio of 3:10 pours into water in tapioca, and stirring is equal
It is even, obtain starch milk；Then adjusting starch milk with sodium hydroxide solution is alkalinity, and alkalization 30 minutes are stood after stirring；(3) it will form sediment
Powder cream is put into high-speed mixer under 60-70 DEG C, the revolving speed of 2000rpm, and it is log sweet potato starch weight 3-5%'s that weight, which is added,
The stearic acid that vinyltriethoxysilane and weight are log sweet potato starch weight 0.5-1%, is stirred to react 60-90 minutes, reacts
After with mass percent be 10% hydrochloric acid solution adjust material pH value to neutrality, modification can be obtained in crushed after being dried
Tapioca.
The dedicated Degradable environment protection mulch of above-mentioned milpa, the modified nano calcium carbonate the preparation method comprises the following steps: will receive
Rice calcium carbonate powder is dehydrated in 110~120 DEG C, is then added in high-speed mixer, is stirred and heat up, and 90 DEG C stop adding
The chelating titanate coupling agent KR- 201 of nanometer calcium carbonate quality 2.0% is added, in 90 DEG C of modified 10min in heat；Again one by one
Stearic acid, 0.5% coconut oil and 1% technical white oil of nanometer calcium carbonate quality 2.0% is added, is modified respectively again at 90 DEG C
10min is shut down, and discharging is ground after drying, is crossed 800 mesh screens, is obtained modified nano calcium carbonate.
The dedicated Degradable environment protection mulch of above-mentioned milpa, the thermal degradation promotor are cobaltous octadecanate powder or lauric acid
Iron；The fineness of the bagasse powder is more than 1000 mesh.
The dedicated Degradable environment protection mulch of above-mentioned milpa, the expanding material are acrylic acid modified polylactic acid low polymer or list
Body fat fatty acid glyceride；The plasticizer is ethylene glycol, propylene glycol or glycerine.
The dedicated Degradable environment protection mulch of the milpa, preparation method include the following steps:
(1) it takes linear low density polyethylene and low density polyethylene (LDPE) to mix according to parts by weight, obtains mixture, then according to mixed
Close object: atoleine is added in the mixture and is uniformly mixed for the weight ratio that atoleine is 310:1；Obtain mixed material A；
(2) modified tapioca starch, modified nano calcium carbonate, bagasse powder, the polyethylene of parts by weight are added in mixed material A
Alcohol, photosensitizer ferric stearate, phosphite type antioxidant, thermal degradation promotor, expanding material and plasticizer are sufficiently mixed uniformly
Afterwards, it is granulated by screw extruder, the material after granulation is blow molded by inflation film manufacturing machine to the ground with a thickness of 0.004-0.1mm
Film, the temperature of Blown Film are 150~190 DEG C, and the degradation induction time of the mulch is 70-72 days.
Cassava is modified in the present invention, sonic oscillation processing first is carried out to tapioca, so that fierceness occurs for starch
And fast-changing mechanical movement, the macromolecular chain of starch in the medium in fluctuation high speed vibration and shearing force
And degrade, cause molecule particles to miniaturize, partial size reduces, and specific surface area increases, and exposes the hydroxyl in starch more, is conducive to
Hydroxyl mutually associates with vinyltriethoxysilane and stearic hydrophilic group used in next step modified-reaction, this hair
It is bright to be modified in the modification of tapioca using vinyltriethoxysilane and stearic acid, starch granules can be made
One layer of lyophobic dust is wrapped up on surface, one layer of fine and close hydrophobic layer is formed, so that starch becomes lipophilic table by hydrophilic surface
Face, so that the modified tapioca starch being prepared has high hydrophobicity matter.There is high hydrophobicity by modified tapioca
Matter can greatly increase the compatibility after tapioca is blended with linear low density polyethylene and low density polyethylene (LDPE), make para arrowroot
Powder can uniformly disperse in the polymer, so that the apparent viscosity of co-mixing system reduces, improve tapioca in whole system
Loading, the mechanical property and degradation property of entire polymer are improved, to make the tensile strength of film obtained and water-fast
Property be improved, degradation property enhancing.
For modified nano calcium carbonate used in the present invention, without modified nanon calcium carbonatefilled in various polymer
Obvious disadvantage is had when middle: first is that surface hydrophilic oleophobic, in polymeric inner bad dispersibility；Second is that being combined with high polymer ontology
Power is poor, has been only capable of compatibilization.Without modified nanometer calcium carbonate surface hydrophilic oleophobic, compatibility and dispersion with polymer
Property is poor, can have an impact to the performance of prepared film when for being filled into entire polymerization system.The present invention pass through by
Nano-calcium carbonate calcium powder is modified to obtain modified nano calcium carbonate, reduces intergranular agglomeration power, increases lipophilicity, improves
The compatibility and dispersibility of calcium carbonate and polymer, enhance chemical affinity, for being filled into polyethylene polymerization system,
Modified nano calcium carbonate can be uniformly dispersed in entire polymerization system, and the compatibility and good dispersion with polymer improve
The quality of prepared mulch.
The invention has the benefit that
1, the modified tapioca starch used in the present invention, it is biodegradable, it is resourceful, it is cheap, and low density polyethylene (LDPE) exists
Melt-processable is good under high temperature, and the present invention has high hydrophobicity matter by modified tapioca, by that will be modified cassava
After starch is blended with linear low density polyethylene and low density polyethylene (LDPE), tapioca and linear low density polyethylene and low-density
The compatibility of polyethylene is improved, and tapioca can uniformly disperse in the polymer, improves tapioca in whole system
In loading, so that the tensile strength of film obtained and water resistance be made to be improved, degradation property is greatly enhanced.
The present invention accelerates the degradation rate for the mulch being prepared by way of adding modified tapioca starch in the feed, because
By microbial attack, gradually degradation disappears starch, and forms porous destruction structure in the polymer, and polymer surface area is caused to increase
Greatly, to be conducive to the further natural decomposition of polymer.
2, be added photosensitizer ferric stearate in the present invention and phosphite type antioxidant compound use form it is a kind of compound
Photodegradable aid, so that an apparent induction period occurs during degradation in manufactured mulch, light degradation is slow in induction period
Slowly, violent light degradation just occurs after induction period, so that the mulch that the present invention is prepared has preferable time control degradability, it is full
The growth of sufficient crop needs；And photo-thermal degradation occurs for the compound photodegradable aid and thermal degradation promotor collective effect further
Improve the degradation property of mulch.
3, the dedicated Degradable environment protection mulch of milpa prepared by the present invention is according to the growth rhythm of corn, and combines light
According to climatic factors such as, temperature, photosensitizer ferric stearate and phosphite type antioxidant and thermal degradation promotor are introduced, solves drop
Solution mulch is difficult to degrade and degrade induction period uncontrollable problem after burying, Plastic-film disintegration induction time 70-72 days, satisfaction
The demand of corn growth.
4, the dedicated Degradable environment protection mulch of milpa that the present invention is prepared can satisfy the tensile strength of agricultural mulching
It is degradable with the requirement of elongation at break, it is environmentally protective, white pollution will not be generated, the pollution to farmland, and this system are reduced
Standby simple process and low cost, is easy to produce in batches.
Specific embodiment
Embodiment 1
A kind of dedicated Degradable environment protection mulch of milpa, the raw material including following weight fraction:
90 parts of linear low density polyethylene；10 parts of low density polyethylene (LDPE)；40 parts of modified tapioca starch；7 parts of modified nano calcium carbonate；
5 parts of bagasse powder；2 parts of polyvinyl alcohol；0.08 part of photosensitizer ferric stearate；0.05 part of phosphite type antioxidant；Thermal degradation promotees
Into 0.3 part of agent cobaltous octadecanate powder；1 part of the acrylic acid modified polylactic acid low polymer of expanding material；2 parts of plasticizer ethylene glycol；It is wherein sweet
The fineness of bagasse powder is more than 1000 mesh；
The modified tapioca starch the preparation method comprises the following steps: (1) by tapioca dry 3 hours at 100 DEG C, obtain dry
Then tapioca is put into ultrasonator ultrasonic vibration 3 hours under 80MHz, the wood being miniaturize by tapioca
Sweet potato starch: (2) are according to tapioca: water is that the weight ratio of 3:10 pours into water in tapioca, stirs evenly, obtains starch
Cream；Then adjusting starch milk with sodium hydroxide solution is alkalinity, and alkalization 30 minutes are stood after stirring；(3) starch milk is put into height
In fast blender under 60-70 DEG C, the revolving speed of 2000rpm, three ethoxy of vinyl that weight is log sweet potato starch weight 3% is added
Base silane and weight are the stearic acid of log sweet potato starch weight 1%, are stirred to react 60 minutes, use mass percent after reaction
For 10% hydrochloric acid solution adjust material pH value to neutrality, modified tapioca starch can be obtained in crushed after being dried；
The modified nano calcium carbonate the preparation method comprises the following steps: by nano-calcium carbonate calcium powder in 110~120 DEG C dehydrate, then
It is added in high-speed mixer, stirs and heats up, the chelating type metatitanic acid of nanometer calcium carbonate quality 2.0% is added in 90 DEG C of stopping heating
Ester coupling agent KR- 201, in 90 DEG C of modified 10min；Be added one by one again nanometer calcium carbonate quality 2.0% stearic acid, 0.5%
Coconut oil and 1% technical white oil, at 90 DEG C again respectively be modified 10min, shut down, discharging, ground after drying, cross 800 meshes
Net obtains modified nano calcium carbonate.
The dedicated Degradable environment protection mulch of the milpa, preparation method include the following steps:
(1) it takes linear low density polyethylene and low density polyethylene (LDPE) to mix according to parts by weight, obtains mixture, then according to mixed
Close object: atoleine is added in the mixture and is uniformly mixed for the weight ratio that atoleine is 310:1；Obtain mixed material A；
(2) modified tapioca starch, modified nano calcium carbonate, bagasse powder, the polyethylene of parts by weight are added in mixed material A
Alcohol, photosensitizer ferric stearate, phosphite type antioxidant, thermal degradation promotor cobaltous octadecanate powder；Expanding material is acrylic acid modified
Polylactic acid low polymer and plasticizer ethylene glycol are granulated by screw extruder after being sufficiently mixed uniformly, the material after granulation are led to
It crosses inflation film manufacturing machine and is blow molded into mulch with a thickness of 0.004mm, the temperature of Blown Film is 150~190 DEG C.
Embodiment 2
A kind of dedicated Degradable environment protection mulch of milpa, the raw material including following weight fraction:
95 parts of linear low density polyethylene；13 parts of low density polyethylene (LDPE)；45 parts of modified tapioca starch；Modified nano calcium carbonate 10
Part；8 parts of bagasse powder；2.5 parts of polyvinyl alcohol；0.12 part of photosensitizer ferric stearate；0.08 part of phosphite type antioxidant；Heat drop
Solve 0.4 part of promotor lauric acid iron；2 parts of expanding material monomeric fatty acid glyceride；4 parts of Plasticizers Propylene glycol；The bagasse
The fineness of powder is more than 1000 mesh；
The modified tapioca starch the preparation method comprises the following steps: (1) by tapioca dry 2.5 hours at 110 DEG C, obtain drying
Tapioca, tapioca is then put into ultrasonator ultrasonic vibration 2.5 hours under 85MHz, is miniaturize
Tapioca: (2) are according to tapioca: water be 3:10 weight ratio water is poured into tapioca, stir evenly, obtain
Starch milk；Then adjusting starch milk with sodium hydroxide solution is alkalinity, and alkalization 30 minutes are stood after stirring；(3) starch milk is put
Into high-speed mixer under 60-70 DEG C, the revolving speed of 2000rpm, the vinyl three that weight is log sweet potato starch weight 4% is added
Ethoxysilane and weight are the stearic acid of log sweet potato starch weight 0.8%, are stirred to react 80 minutes, use quality after reaction
The hydrochloric acid solution that percentage is 10% adjusts the pH value of material to neutrality, and modified tapioca starch can be obtained in crushed after being dried.It is described
Modified nano calcium carbonate preparation method and embodiment 1 in it is consistent.
The dedicated Degradable environment protection mulch of the milpa, preparation method include the following steps:
(1) it takes linear low density polyethylene and low density polyethylene (LDPE) to mix according to parts by weight, obtains mixture, then according to mixed
Close object: atoleine is added in the mixture and is uniformly mixed for the weight ratio that atoleine is 310:1；Obtain mixed material A；
(2) modified tapioca starch, modified nano calcium carbonate, bagasse powder, the polyethylene of parts by weight are added in mixed material A
Alcohol, photosensitizer ferric stearate, phosphite type antioxidant, thermal degradation promotor lauric acid iron, expanding material monomeric fatty acid glycerol
Ester and Plasticizers Propylene glycol are granulated by screw extruder after being sufficiently mixed uniformly, the material after granulation are blown by inflation film manufacturing machine
The mulch with a thickness of 0.05mm is made, the temperature of Blown Film is 150~190 DEG C.
Embodiment 3
A kind of dedicated Degradable environment protection mulch of milpa, the raw material including following weight fraction:
100 parts of linear low density polyethylene；15 parts of low density polyethylene (LDPE)；50 parts of modified tapioca starch；Modified nano calcium carbonate 12
Part；10 parts of bagasse powder；3 parts of polyvinyl alcohol；0.2 part of photosensitizer ferric stearate；0.1 part of phosphite type antioxidant；Thermal degradation
0.5 part of promotor cobaltous octadecanate powder；3 parts and 5 parts of plasticizer glycerine of the acrylic acid modified polylactic acid low polymer of expanding material；It is described
Bagasse powder fineness more than 1000 mesh；
The modified tapioca starch the preparation method comprises the following steps: (1) by tapioca dry 2 hours at 120 DEG C, obtain dry
Then tapioca is put into ultrasonator ultrasonic vibration 2 hours under 90MHz, the wood being miniaturize by tapioca
Sweet potato starch: (2) are according to tapioca: water is that the weight ratio of 3:10 pours into water in tapioca, stirs evenly, obtains starch
Cream；Then adjusting starch milk with sodium hydroxide solution is alkalinity, and alkalization 30 minutes are stood after stirring；(3) starch milk is put into height
In fast blender under 60-70 DEG C, the revolving speed of 2000rpm, three ethoxy of vinyl that weight is log sweet potato starch weight 5% is added
Base silane and weight are the stearic acid of log sweet potato starch weight 0.5%, are stirred to react 90 minutes, use quality percentage after reaction
Than for 10% hydrochloric acid solution adjust material pH value to neutrality, modified tapioca starch can be obtained in crushed after being dried.
The preparation method of the modified nano calcium carbonate is consistent with the preparation method in embodiment 1.
The dedicated Degradable environment protection mulch of the milpa, preparation method include the following steps:
(1) it takes linear low density polyethylene and low density polyethylene (LDPE) to mix according to parts by weight, obtains mixture, then according to mixed
Close object: atoleine is added in the mixture and is uniformly mixed for the weight ratio that atoleine is 310:1；Obtain mixed material A；
(2) modified tapioca starch, modified nano calcium carbonate, bagasse powder, the polyethylene of parts by weight are added in mixed material A
Alcohol, photosensitizer ferric stearate, phosphite type antioxidant, thermal degradation promotor cobaltous octadecanate powder, expanding material are acrylic acid modified
Polylactic acid low polymer and plasticizer glycerine are granulated by screw extruder after being sufficiently mixed uniformly, the material after granulation are led to
It crosses inflation film manufacturing machine and is blow molded into mulch with a thickness of 0.1mm, the temperature of Blown Film is 150~190 DEG C.
Application effect
Agricultural mulching made of the dedicated Degradable environment protection mulch of milpa and common plastics of the invention being prepared is dropped
Comparative test is solved, the milpa in Laibin city of Guangxi Wuxuan County carries out Degrading experiment, time: from -2016 years on the 25th April in 2016
September 01, the drop of agricultural mulching made of the dedicated Degradable environment protection mulch of the milpa that the present invention is prepared and common plastics
It is as shown in table 1 below to solve situation:
The dedicated Degradable environment protection mulch of the milpa that the visible present invention is prepared from upper table 1 is degraded with preferable time control
Property, Plastic-film disintegration induction time is the rule for meeting corn growth for 70 days, and mulch takes place more after test carries out 70 days
Violent photo-thermal degradation, when test carries out 120 days, mulch of the invention is degradable, meets the demand of corn growth,
And safety and environmental protection, it is pollution-free.
Claims (5)
1. a kind of dedicated Degradable environment protection mulch of milpa, which is characterized in that the raw material including following weight fraction:
90-100 parts of linear low density polyethylene；10-15 parts of low density polyethylene (LDPE)；40-50 parts of modified tapioca starch；Modified Nano
7-12 parts of calcium carbonate；5-10 parts of bagasse powder；2-3 parts of polyvinyl alcohol；0.08-0.2 parts of photosensitizer ferric stearate；Phosphite type
0.05-0.1 parts of antioxidant；0.3-0.5 parts of thermal degradation promotor；1-3 parts of expanding material；2-5 parts of plasticizer；
The modified tapioca starch the preparation method comprises the following steps: (1) by tapioca dry 2-3 hours at 100-120 DEG C, obtain
Then tapioca is put into ultrasonator under 80-90MHz ultrasonic vibration 2-3 hours, obtains by dry tapioca
The tapioca of miniaturization: (2) are according to tapioca: water is that the weight ratio of 3:10 pours into water in tapioca, and stirring is equal
It is even, obtain starch milk；Then adjusting starch milk with sodium hydroxide solution is alkalinity, and alkalization 30 minutes are stood after stirring；(3) it will form sediment
Powder cream is put into high-speed mixer under 60-70 DEG C, the revolving speed of 2000rpm, and it is log sweet potato starch weight 3-5%'s that weight, which is added,
The stearic acid that vinyltriethoxysilane and weight are log sweet potato starch weight 0.5-1%, is stirred to react 60-90 minutes, reacts
After with mass percent be 10% hydrochloric acid solution adjust material pH value to neutrality, modification can be obtained in crushed after being dried
Tapioca.
2. the dedicated Degradable environment protection mulch of milpa according to claim 1, which is characterized in that the modified Nano carbon
Sour calcium the preparation method comprises the following steps: by nano-calcium carbonate calcium powder in 110~120 DEG C dehydrate, be then added in high-speed mixer,
It stirring and heats up, the chelating titanate coupling agent KR- 201 of nanometer calcium carbonate quality 2.0% is added in 90 DEG C of stopping heating,
90 DEG C of modified 10min；Again one by one be added nanometer calcium carbonate quality 2.0% stearic acid, 0.5% coconut oil and 1% industry it is white
Oil is modified 10min respectively again at 90 DEG C, shuts down, and discharging is ground after drying, crosses 800 mesh screens, obtains modified nano-meter caco 3
Calcium.
3. the dedicated Degradable environment protection mulch of milpa according to claim 1, which is characterized in that the thermal degradation promotor
For cobaltous octadecanate powder or lauric acid iron；The fineness of the bagasse powder is more than 1000 mesh.
4. the dedicated Degradable environment protection mulch of milpa according to claim 1, which is characterized in that the expanding material is propylene
Sour polydactyl acid oligomer or monomeric fatty acid glyceride；The plasticizer is ethylene glycol, propylene glycol or glycerine.
5. the dedicated Degradable environment protection mulch of milpa according to claim 1, which is characterized in that preparation method includes such as
Lower step:
(1) it takes linear low density polyethylene and low density polyethylene (LDPE) to mix according to parts by weight, obtains mixture, then according to mixed
Close object: atoleine is added in the mixture and is uniformly mixed for the weight ratio that atoleine is 310:1；Obtain mixed material A；
(2) modified tapioca starch, modified nano calcium carbonate, bagasse powder, the polyethylene of parts by weight are added in mixed material A
Alcohol, photosensitizer ferric stearate, phosphite type antioxidant, thermal degradation promotor, expanding material and plasticizer are sufficiently mixed uniformly
Afterwards, it is granulated by screw extruder, the material after granulation is blow molded by inflation film manufacturing machine to the ground with a thickness of 0.004-0.1mm
Film, the temperature of Blown Film are 150~190 DEG C.
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|---|---|---|---|---|
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| CN112940389A (en) * | 2021-03-04 | 2021-06-11 | 格域包装科技（江苏）有限公司 | Anaerobic degradation material and preparation method thereof |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07268112A (en) * | 1994-03-30 | 1995-10-17 | Takenaka Komuten Co Ltd | Biodegradable film |
| CN1415651A (en) * | 2002-12-10 | 2003-05-07 | 中国科学院长春应用化学研究所 | Method for preparing amylaceous fully degradable plastic |
| CN101993558A (en) * | 2009-08-09 | 2011-03-30 | 陈天云 | Thin film produced by using starch fiber waste plastic |
| CN102417648A (en) * | 2011-11-23 | 2012-04-18 | 吴江明峰聚氨酯制品有限公司 | Biodegradable polyethylene plastic film |
| CN102660068A (en) * | 2012-04-15 | 2012-09-12 | 云南省农业科学院甘蔗研究所 | Controllable sugarcane photo-thermal degradable mulch film |
| CN103351483A (en) * | 2013-07-24 | 2013-10-16 | 济南大学 | Microsphere-type high-hydrophoby starch, as well as preparation method and application thereof |
| CN104610935A (en) * | 2013-11-05 | 2015-05-13 | 中国石油化工集团公司 | Plugging agent while drilling for oil-based drilling fluids, and preparation method thereof |
| CN105254979A (en) * | 2015-11-14 | 2016-01-20 | 李康 | Preparation method of degradable modified vinyl plastic |
| CN106349515A (en) * | 2016-08-30 | 2017-01-25 | 安徽鼎正包装材料有限公司 | Biodegradable plastic and preparation method thereof |
| CN106883501A (en) * | 2017-03-20 | 2017-06-23 | 兰州鑫银环橡塑制品有限公司 | A kind of enhanced ecological degradative plastic film in Techniques in Dry-farming Areas and preparation method thereof |
| CN108081711A (en) * | 2017-11-21 | 2018-05-29 | 广西武宣金牌防水材料科技有限公司 | Flame retarded thermoplastic's polyolefin TPO waterproof rolls and preparation method thereof |
-
2018
- 2018-09-26 CN CN201811119754.3A patent/CN109181090A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07268112A (en) * | 1994-03-30 | 1995-10-17 | Takenaka Komuten Co Ltd | Biodegradable film |
| CN1415651A (en) * | 2002-12-10 | 2003-05-07 | 中国科学院长春应用化学研究所 | Method for preparing amylaceous fully degradable plastic |
| CN101993558A (en) * | 2009-08-09 | 2011-03-30 | 陈天云 | Thin film produced by using starch fiber waste plastic |
| CN102417648A (en) * | 2011-11-23 | 2012-04-18 | 吴江明峰聚氨酯制品有限公司 | Biodegradable polyethylene plastic film |
| CN102660068A (en) * | 2012-04-15 | 2012-09-12 | 云南省农业科学院甘蔗研究所 | Controllable sugarcane photo-thermal degradable mulch film |
| CN103351483A (en) * | 2013-07-24 | 2013-10-16 | 济南大学 | Microsphere-type high-hydrophoby starch, as well as preparation method and application thereof |
| CN104610935A (en) * | 2013-11-05 | 2015-05-13 | 中国石油化工集团公司 | Plugging agent while drilling for oil-based drilling fluids, and preparation method thereof |
| CN105254979A (en) * | 2015-11-14 | 2016-01-20 | 李康 | Preparation method of degradable modified vinyl plastic |
| CN106349515A (en) * | 2016-08-30 | 2017-01-25 | 安徽鼎正包装材料有限公司 | Biodegradable plastic and preparation method thereof |
| CN106883501A (en) * | 2017-03-20 | 2017-06-23 | 兰州鑫银环橡塑制品有限公司 | A kind of enhanced ecological degradative plastic film in Techniques in Dry-farming Areas and preparation method thereof |
| CN108081711A (en) * | 2017-11-21 | 2018-05-29 | 广西武宣金牌防水材料科技有限公司 | Flame retarded thermoplastic's polyolefin TPO waterproof rolls and preparation method thereof |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109880217A (en) * | 2019-03-13 | 2019-06-14 | 广州思薇伦特美容生物科技有限公司 | A kind of green biodegradable plastics film and its processing technology |
| CN110922667A (en) * | 2019-12-13 | 2020-03-27 | 甘肃省农业科学院 | Special mulching film easy to recycle in corn small farmer planting mode |
| CN112592501A (en) * | 2020-12-15 | 2021-04-02 | 黑龙江边外香农业有限责任公司 | Degradable mulching film and preparation method thereof |
| CN112724489A (en) * | 2020-12-26 | 2021-04-30 | 重庆柏纳伟晟新材料科技有限公司 | Degradable material and preparation method thereof |
| CN112940389A (en) * | 2021-03-04 | 2021-06-11 | 格域包装科技（江苏）有限公司 | Anaerobic degradation material and preparation method thereof |
| CN112980090A (en) * | 2021-04-22 | 2021-06-18 | 王明霞 | Ecological degradable plastic mulching film and preparation method thereof |
| CN113603957A (en) * | 2021-08-06 | 2021-11-05 | 上海紫华薄膜科技有限公司 | Waterproof breathable film and preparation method thereof |
| CN115651293A (en) * | 2022-10-09 | 2023-01-31 | 科伦塑业集团股份有限公司 | Efficient grassland suppression mask and preparation method thereof |
| CN116874912A (en) * | 2023-07-29 | 2023-10-13 | 深圳市品创源实业有限公司 | Degradable film and preparation method thereof |
| CN116874912B (en) * | 2023-07-29 | 2024-05-28 | 深圳市品创源实业有限公司 | Degradable film and preparation method thereof |
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Application publication date: 20190111 |