CN108262938A - A kind of mechanism and preparation method of biology base degradation agriculture greenhouse film - Google Patents

A kind of mechanism and preparation method of biology base degradation agriculture greenhouse film Download PDF

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Publication number
CN108262938A
CN108262938A CN201810114867.8A CN201810114867A CN108262938A CN 108262938 A CN108262938 A CN 108262938A CN 201810114867 A CN201810114867 A CN 201810114867A CN 108262938 A CN108262938 A CN 108262938A
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China
Prior art keywords
heating cabinet
storehouse
external mold
layer
stirring
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Withdrawn
Application number
CN201810114867.8A
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Chinese (zh)
Inventor
张建华
张博
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TIANJIN JIANNA WOTE PLASTICIZATION TECHNOLOGY Co Ltd
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TIANJIN JIANNA WOTE PLASTICIZATION TECHNOLOGY Co Ltd
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Priority to CN201810114867.8A priority Critical patent/CN108262938A/en
Publication of CN108262938A publication Critical patent/CN108262938A/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/12—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
    • 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
    • C08J2331/00—Characterised by the use of 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 acyloxy radical of a saturated carboxylic acid, or carbonic acid, or of a haloformic acid
    • C08J2331/02—Characterised by the use of omopolymers or copolymers of esters of monocarboxylic acids
    • C08J2331/04—Homopolymers or copolymers of vinyl acetate
    • 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
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
    • 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
    • C08J2431/00—Characterised by the use of 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 acyloxy radical of a saturated carboxylic acid, or carbonic acid, or of a haloformic acid
    • C08J2431/02—Characterised by the use of omopolymers or copolymers of esters of monocarboxylic acids
    • C08J2431/04—Homopolymers or copolymers of vinyl acetate
    • 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
    • C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/02—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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • 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
    • 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
    • C08K9/00—Use of pretreated ingredients

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention belongs to biology base degradation technique field more particularly to the mechanism and preparation method of a kind of biology base degradation agriculture greenhouse film, including stirring and drying device, comminutor, coextrusion film blowing machine；The stirring and drying device includes casing, the side wall side of the casing is equipped with the first heating cabinet, opposite side is equipped with the second heating cabinet, first heating cabinet, the equal open top of second heating cabinet, the first heating tube is equipped in first heating cabinet, the second heating tube is equipped in second heating cabinet, the first door is equipped at the top of first heating cabinet, the second door is equipped at the top of second heating cabinet, rotary shaft is equipped in the casing, the casing inner top is equipped with positive stop lug boss, the top of the rotary shaft is located in positive stop lug boss, the bottom of shell is equipped with straight slot, the rotary shaft bottom passes through straight slot and is connected with stirring motor, bearing is equipped in the straight slot, the bearing holder (housing, cover) is in rotating shaft.

Description

A kind of mechanism and preparation method of biology base degradation agriculture greenhouse film
Technical field
The invention belongs to biology base degradation technique field more particularly to a kind of biology base degradation agriculture greenhouse film mechanism with Preparation method.
Background technology
With economic rapid development, people are to the destruction getting worse of environment, especially nondegradable plastics, by people Arbitrarily throw out without care after, due to being not easy, by soil microbial degradation, to be deposited in soil for a long time, caused to ecological environment serious Pollution.Disposable tableware, Phthalates and agricultural mulching etc. are difficult to be recycled, traditional processing method with Based on burning and burying.Burning can generate a large amount of pernicious gas, pollute environment；It buries in the then polymer short time therein not It can be decomposed by the microorganisms, also pollute environment.The residual plastic foil abandoned is present in soil, hinders the development of crop root system and to water Divide, the absorption of nutrient, reduce the gas permeability of soil, lead to crop production reduction；After action eats the residual plastic foil abandoned, intestines can be caused Obstruction and it is dead；The synthetic netting and fishline being lost in ocean or discard in ocean cause phase to marine organisms When harm, therefore advocate green consumption with reinforcement environmental protection it is imperative.
In order to reduce white pollution, preserving the ecological environment, people start to study degredation plastic, and the of research Generation degradative plastics is degradation plastic, and this degradation plastic is added to dropping for sub-fraction on the basis of original raw material Solution masterbatch or starch-based initial material, major part cannot degrade, and also be unfavorable for the recycling and reconstruction of plastics；The of research Two generation degradative plastics are biology base controllable full-degradable plastics, and using resourceful, reproducible biomass as raw material, degradation process is green Color, cleaning also help the benign cycle of structure soil and environmental system, are to alleviate oil crisis, eliminate having for white pollution Effect approach.
At present, the method for manufacture biology base degradative plastics predominantly first dries raw material, then pass through agitating device Stirring, is then granulated by comminutor, finally by coextrusion film blowing machine blowfilm shaping, the drying unit of current practice, outside The raw material temperature difference of surface and the inside is larger, and drying is not enough.
Invention content
The present invention provides a kind of mechanism and preparation method of biology base degradation agriculture greenhouse film, to solve above-mentioned background technology The problem of drying of middle proposition is insufficient.
Technical problem solved by the invention is realized using following technical scheme：
A kind of mechanism and preparation method of biology base degradation agriculture greenhouse film, including stirring and drying device, comminutor, coextrusion film blowing Machine, the stirring and drying device are connect with comminutor, and the comminutor is connect with coextrusion film blowing machine；
The stirring and drying device includes casing, and the side wall side of the casing is equipped with the first heating cabinet, and opposite side is equipped with second Heating cabinet, first heating cabinet, the equal open top of the second heating cabinet, first heating cabinet is interior to be equipped with the first heating tube, institute It states and the second heating tube is equipped in the second heating cabinet, the first door, the second heating silo roof are equipped at the top of first heating cabinet Portion is equipped with the second door, and rotary shaft is equipped in the casing, and the casing inner top is equipped with positive stop lug boss, the top of the rotary shaft Portion is located in positive stop lug boss, and the bottom of shell is equipped with straight slot, and the rotary shaft bottom passes through straight slot and is connected with stirring motor, Bearing is equipped in the straight slot, the bearing holder (housing, cover) is equipped with the first stirring rod, opposite side in rotating shaft, the rotary shaft side Equipped with the second stirring rod, first stirring rod, the second stirring rod equidistant arrangement, the cabinet top are additionally provided with gas vent；
The comminutor includes conveying storehouse, cutting storehouse, output storehouse, and the top in the conveying storehouse is equipped with feed inlet, the conveying storehouse Interior to be equipped with conveying screw rod, described conveying screw rod one end is connected with feeder motor, and the conveying storehouse other end is connect with cutting storehouse, institute It states and cutter is equipped in cutting storehouse, described cutter one end is connected with cutting motor, and the bottom in the cutting storehouse is connect with output storehouse, institute It states in output storehouse and is equipped with output screw, the output screw is connected with output motor；
The coextrusion film blowing machine includes outer die body, is equipped with core model in the external mold body, and the outer die body includes first layer external mold, the Two layers of external mold, third layer external mold, bed die, between the first layer external mold, second layer external mold be equipped with first layer runner, described second Second layer runner is equipped between layer external mold, third layer external mold, third layer runner, institute are equipped between the third layer external mold, bed die It states and mouth mold is equipped with above first layer external mold, top layer runner, the top layer runner, the first laminar flow are equipped between the mouth mold and core model Road, second layer runner, third layer runner communicate.
The quantity of first stirring rod is 3-8, and the quantity of second stirring rod is 3-8, first stirring Bar, the setting of the second stirring rod axial symmetry.
Raw material is further included, the raw material includes starch, polyvinyl acetate, poly butylene succinate, paraffin, crystallite Wax, oleic acid, pine tar, calcium carbonate, activated Calcium carbonate.
Beneficial effects of the present invention are：
1 the technical program can not only save a large amount of drying time by the way that agitating device and drying unit are integrated, also Drying can be made more abundant, improve production efficiency, energy saving, implementation result is ideal, and low manufacture cost is simply easy to Implement, conducive to promoting the use of on a large scale.
2 is separately positioned with raw material by heating tube, and heating tube can both have been protected by contamination of raw material, can also not avoid raw material Inside it is mixed into impurity.
The setting of 3 positive stop lug boss can limit rotary shaft, prevent rotary shaft from tilting.
The setting of 4 bearings can rub to avoid between rotary shaft and casing, so as to protect rotary shaft without damage.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structure diagram of stirring and drying device of the present invention；
Fig. 3 is the structure diagram of comminutor of the present invention；
Fig. 4 is the structure diagram of coextrusion film blowing machine of the present invention.
In figure：1- stirring and drying devices, 2- comminutors, 3- coextrusion film blowing machines, 10- conveyings storehouse, 11- cuttings storehouse, 12- outputs Storehouse, 13- feed inlets, 14- conveying screw rods, 15- feeder motors, 16- cutters, 17- cutting motors, 18- output screws, 19- outputs Motor, the outer die bodys of 20-, 21- core models, 22- first layer external molds, 23- second layer external molds, 24- third layer external molds, 25- bed dies, 26- First layer runner, 27- second layer runners, 28- third layer runners, 29- mouth molds, 30- top layer runners, 31- casings, 32- first add Hot storehouse, the second heating cabinets of 33-, the first heating tubes of 34-, the second heating tubes of 35-, the first doors of 36-, the second doors of 37-, 38- rotations Shaft, 39- positive stop lug boss, 40- straight slots, 41- bearings, 42- stirring motors, the first stirring rods of 43-, the second stirring rods of 44-, 45- Gas vent.
Specific embodiment
A kind of mechanism and preparation method of biology base degradation agriculture greenhouse film, including raw material, stirring and drying device 1, are granulated Machine 2, coextrusion film blowing machine 3, stirring and drying device 1 are connect with comminutor 2, and comminutor 2 is connect with coextrusion film blowing machine 3；
Raw material includes starch, polyvinyl acetate, poly butylene succinate, paraffin, microwax, oleic acid, pine tar, carbonic acid Calcium, activated Calcium carbonate；
Stirring and drying device 1 includes casing 31, and the side wall side of casing 31 is equipped with the first heating cabinet 32, and opposite side is equipped with second and adds Hot storehouse 33, the first heating cabinet 32, second heat the equal open top in 33 storehouses, and the first heating tube 34 is equipped in the first heating cabinet 32, the The second heating tube 35 is equipped in two heating cabinets 33,32 top of the first heating cabinet is equipped with the first door 36,33 top of the second heating cabinet Equipped with the second door 37, rotary shaft 38 is equipped in casing 31,31 inner top of casing is equipped with positive stop lug boss 39, the top of rotary shaft 38 In positive stop lug boss 39,31 bottom of casing is equipped with straight slot 40, and 38 bottom of rotary shaft passes through straight slot 40 and is connected with stirring motor 42, straight slot 40 is interior to be equipped with bearing 41, and bearing 41 is sleeved on 38 outside of rotary shaft, and 38 side of rotary shaft is equipped with the first stirring rod 43, separately Side is equipped with the second stirring rod 44, the first stirring rod 43,44 equidistant arrangement of the second stirring rod, and 31 top of casing is additionally provided with gas vent 45；
Comminutor 2 includes conveying storehouse 10, cutting storehouse 11, output storehouse 12, and the top in conveying storehouse 10 is equipped with feed inlet 13, conveys storehouse 10 Interior to be equipped with conveying screw rod 14,14 one end of conveying screw rod is connected with feeder motor 15, and conveying 10 other end of storehouse is connect with cutting storehouse 11, It cuts and cutter 16 is equipped in storehouse 11,16 one end of cutter is connected with cutting motor 17, and the bottom for cutting storehouse 11 is connect with output storehouse 12, It exports and output screw 18 is equipped in storehouse 12, output screw 18 is connected with output motor 19；
Coextrusion film blowing machine 3 includes outer die body 20, is equipped with core model 21 in outer die body 20, and outer die body 20 includes first layer external mold 22, the Two layers of external mold 23, third layer external mold 24, bed die 25 are equipped with first layer runner 26 between first layer external mold 22, second layer external mold 23, Second layer runner 27 is equipped between second layer external mold 23, third layer external mold 24, third is equipped between third layer external mold 24, bed die 25 Laminar flow road 28,22 top of first layer external mold are equipped with mouth mold 29, top layer runner 30, top layer runner are equipped between mouth mold 29 and core model 21 30th, first layer runner 26, second layer runner 27, third layer runner 28 communicate.
The quantity of first stirring rod 43 is 3-8, and the quantity of the second stirring rod 44 is 3-8, the first stirring rod 43, second 44 axial symmetry of stirring rod is set.
Implementation principle：
Biology base degradative plastics can be divided into starch, polyesters and other classes, the technical program is starch according to raw material point Class, starch is abundance, cheap natural macromolecular material, and native starch is the little particle for having crystalline texture with inside Existing for state, molecular structure has two kinds of straight chain and branch.For different plant varieties, the form of starch granules, greatly The ratio of small and amylose and amylopectin content is all different.The grain size of starch granules is mostly at 15 ~ 100 μm.Directly The chain compound that the glucose of chain starch is combined with α-D-1,4 glycosidic bonds, relative molecular mass are（20~200）x104.Branch The connection mode of each glucose unit removes α-D-1 in starch, and outside 4 glycosidic bonds, also there are α-D-1,6 glycosidic bonds, average molecular matter It measures and is（100~400）x106.The property of the starch and relative molecular mass of starch, branch lengths and amylose and branch The ratio of starch is related.The starch of high amylose content has preferable mechanical performance more suitable for preparing plastics, resulting product.
Native starch is intermolecular, and there are hydrogen bonds, and dissolubility is very poor, hydrophilic but not soluble easily in water, it has highly polar knot Brilliant property.Since there are strong hydrogen bonding effects between the macromolecule of native starch, it is difficult to direct machine-shaping.To improve its processing technology Performance generally by the hydrogen bond for opening starch interchain, realizes the method that starch loses crystallization.There are two types of its operating methods, A kind of is the starch solution that heating aqueous amount is more than 90%, and starch granules is 60~70oStart to be swollen between C, reach 90 in temperatureoC Later starch granules starts to burst apart, and macromolecule interchain hydrogen bond is opened, and generates gelation；Another kind is added under air-tight state Heat plasticates and squeezes out the starch that water content is less than 28%.
Implementation process：
First by raw material according to being configured by weight：Including 10-18 parts of starch, 18-25 parts of polyvinyl acetate, polybutadiene Sour butanediol ester 20-30 parts, 1-3 parts of paraffin, 1-3 parts of oleic acid, 4-6 parts of pine tar, 2-4 parts of calcium carbonate, is lived at 2-3 parts of microwax 2-3 parts of calcium carbonate of property.
Then it puts raw material into stirring and drying device and is stirred drying, the time is 8-12 hours, after drying stirs evenly It is put into comminutor to be granulated, obtains degradative plastics particle, head temperature is 110-150 DEG C, then puts degradative plastics particle Enter and blown film is carried out in coextrusion film blowing machine, wherein the temperature of blown film is 150 DEG C -200 DEG C.
Experiment process：
Earthworm acute toxicity test
1. experiment is summarized
Earthworm toxicity test compares experiment with biology base compost and standard compost, detects the degradation heap containing biodegradable starch-plastics Fertilizer is to the toxic effect of earthworm.Biology base degradative plastics usually contains various metabolites after starch degradation, part does not drop Solve complete product and inorganic matter.
The artificial soil of accurate formulation and compost are mixed to the survival soil of crop earthworm by different proportion.By 14 days The Survival of earthworm is assessed in experiment.The assessment of compost toxicity is with earthworm in degradation compost soil and in standard pile fertile soil The variation of survival rate and weight weigh.
2. test specification
This experiment uses the OECD chemicals test rules #207 " earthworm acute toxicity test " of OECD.
3. test procedure
（1）The compost soil mixture of 750g is packed into wherein by experiment using the glass jar of 1000ml.Each mixing match does 4 A repetition.
（2）Before earthworm is put into glass jar, earthworm is placed in artificial soil 24 hours.It weighs, is put into each tank 10 earthworms, earthworm are placed on the top of compost soil mixture.
（3）The foraminate plastic membrane sealing of all test tanks, it is 22 ± 2 to be placed on temperatureoThe interior of C, continuous light It is 400 ~ 800 luxs according to intensity.Within experimental period, if it is desired, suitable water can be added in into tank.
（4）Experiment carries out 14 days.Measure the earthworm survival rate and weight in per tank.Record any abnormal conditions of earthworm.
In earthworm acute toxicity test, the survival rate of earthworm is the index of the most critical of this experiment.From the point of view of result of the test, institute There are three types of（60%、80%、100%）Biology base compost soil is compared with standard pile fertile soil, and the survival rate of earthworm is without unfavorable shadow It rings, survival rate is slightly above its contrast groups.
The embodiment of the present invention is described in detail above, but the content is only presently preferred embodiments of the present invention, Should not be construed as limiting the present invention practical range, any changes and modifications in accordance with the scope of the present application, It should all still belong within the patent covering scope of the present invention.

Claims (3)

1. a kind of mechanism and preparation method of biology base degradation agriculture greenhouse film, it is characterised in that：
Including stirring and drying device, comminutor, coextrusion film blowing machine, the stirring and drying device is connect with comminutor, the granulation Machine is connect with coextrusion film blowing machine；
The stirring and drying device includes casing, and the side wall side of the casing is equipped with the first heating cabinet, and opposite side is equipped with second Heating cabinet, first heating cabinet, the equal open top of the second heating cabinet, first heating cabinet is interior to be equipped with the first heating tube, institute It states and the second heating tube is equipped in the second heating cabinet, the first door, the second heating silo roof are equipped at the top of first heating cabinet Portion is equipped with the second door, and rotary shaft is equipped in the casing, and the casing inner top is equipped with positive stop lug boss, the top of the rotary shaft Portion is located in positive stop lug boss, and the bottom of shell is equipped with straight slot, and the rotary shaft bottom passes through straight slot and is connected with stirring motor, Bearing is equipped in the straight slot, the bearing holder (housing, cover) is equipped with the first stirring rod, opposite side in rotating shaft, the rotary shaft side Equipped with the second stirring rod, first stirring rod, the second stirring rod equidistant arrangement, the cabinet top are additionally provided with gas vent；
The comminutor includes conveying storehouse, cutting storehouse, output storehouse, and the top in the conveying storehouse is equipped with feed inlet, the conveying storehouse Interior to be equipped with conveying screw rod, described conveying screw rod one end is connected with feeder motor, and the conveying storehouse other end is connect with cutting storehouse, institute It states and cutter is equipped in cutting storehouse, described cutter one end is connected with cutting motor, and the bottom in the cutting storehouse is connect with output storehouse, institute It states in output storehouse and is equipped with output screw, the output screw is connected with output motor；
The coextrusion film blowing machine includes outer die body, is equipped with core model in the external mold body, and the outer die body includes first layer external mold, the Two layers of external mold, third layer external mold, bed die, between the first layer external mold, second layer external mold be equipped with first layer runner, described second Second layer runner is equipped between layer external mold, third layer external mold, third layer runner, institute are equipped between the third layer external mold, bed die It states and mouth mold is equipped with above first layer external mold, top layer runner, the top layer runner, the first laminar flow are equipped between the mouth mold and core model Road, second layer runner, third layer runner communicate.
2. the mechanism and preparation method of a kind of biology base degradation agriculture greenhouse film according to claim 1, it is characterised in that： The quantity of first stirring rod is 3-8, and the quantity of second stirring rod is 3-8, and first stirring rod, second stir Mix the setting of bar axial symmetry.
3. the mechanism and preparation method of a kind of biology base degradation agriculture greenhouse film according to claim 1, it is characterised in that： Raw material is further included, the raw material includes starch, polyvinyl acetate, poly butylene succinate, paraffin, microwax, oleic acid, pine Tar, calcium carbonate, activated Calcium carbonate.
CN201810114867.8A 2018-02-06 2018-02-06 A kind of mechanism and preparation method of biology base degradation agriculture greenhouse film Withdrawn CN108262938A (en)

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Application Number Priority Date Filing Date Title
CN201810114867.8A CN108262938A (en) 2018-02-06 2018-02-06 A kind of mechanism and preparation method of biology base degradation agriculture greenhouse film

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Application Number Priority Date Filing Date Title
CN201810114867.8A CN108262938A (en) 2018-02-06 2018-02-06 A kind of mechanism and preparation method of biology base degradation agriculture greenhouse film

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Application publication date: 20180710