CN107778738A - A kind of agricultural plastic ground membrane and preparation method for prevention and control vegetables alternaria - Google Patents
A kind of agricultural plastic ground membrane and preparation method for prevention and control vegetables alternaria Download PDFInfo
- Publication number
- CN107778738A CN107778738A CN201711178570.XA CN201711178570A CN107778738A CN 107778738 A CN107778738 A CN 107778738A CN 201711178570 A CN201711178570 A CN 201711178570A CN 107778738 A CN107778738 A CN 107778738A
- Authority
- CN
- China
- Prior art keywords
- prevention
- preparation
- alternaria
- membrane
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/08—Heat treatment
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/123—Treatment by wave energy or particle radiation
-
- 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
- C08J2329/00—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
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- 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
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/02—Cellulose; Modified cellulose
-
- 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
- C08J2403/04—Starch derivatives
- C08J2403/10—Oxidised starch
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Protection Of Plants (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention is used for the agricultural plastic ground membrane and preparation method of prevention and control vegetables alternaria, including：A, cellulose extracts in straw, defibrination refinement, micrometer fibers element is made；B, cobalt blue dye is added into micrometer fibers element, be well mixed；C, fiber of the compound under the impact of hot high pressure air-flow in fibre web mutually tangles and close obvolvent, formation are dispersed with the web of cobalt blue dyestuff；D, modified polyvinylalcohol is prepared；E, web and modified polyvinylalcohol are heated into melting in an extruder, modeling thing extrusion, obtains blue membrane；F, by blue membrane by sided corona treatment, hot-forming, obtained agricultural composite mulching film.Barrier layer in two-layer compound mulch film of the present invention is the cyan coloring layer that can suppress alternaria, it is aided with the web of densification, effectively can infects alternaria by prevention and control brassicaceous vegetable, play a part of being incubated water conservation, thin film mechanical performance is excellent, and film is green, biodegradable.
Description
Technical field
The invention belongs to technical field prepared by agricultural mulching, and in particular to a kind of agriculture for prevention and control vegetables alternaria
With plastic film and preparation method thereof.
Background technology
Pseudomonas syringae pv. maculicola is as caused by alternaria leaf spot of crucifers Pseudomonas alba, and blade is come into being water stain shape disease
Spot, after be changed into dark brown or filbert, in not conformality, thin paper shape after expansion.Stem and bennet are come into being oil immersion shape fleck, after be changed into
Atropurpureus irregular shape scab.Pod is killed scab circle or subcircular, dark brown.Mainly infected in the case of nature Chinese cabbage,
A variety of crucifers such as radish, wild cabbage, cauliflower, turnip, leaf mustard, high dish, three river island dishes, rape.Brassicaceous vegetable is thin
Bacterium property black spot occurs mainly in early summer in warm rainy season, or summer relatively cools and humid region.Disease is by band strain
Son is propagated, and field is propagated based on wind and rain and entomochory, and bacterial black rot has obvious infection center in field, rainy
Under moist environmental condition, disease can be rapid popular, and the strain incidence of disease is up to 100%.The influence of disease not only directly reduces yield,
And have a strong impact on the quality and the output value of product.
Agricultural mulching refers to directly be covered in cultivation or subaerial slim agricultural film.General thickness be 0.008~
0.015mm, basic resin are polyethylene.In recent years, various coloured agricultural films list one after another, due to the agricultural film pair of different colours
The absorption of spectrum and reflexive property are different, and the influence to crop growth and weeds, pest and disease damage, ground temperature is also different.Modern ground
Film develops into the multi-functional professional mulch film such as various coloured mulch films and weeding, insect prevention by common ground film.Therefore it is directed in use
The characteristics of different crops and planting season, select the agricultural film of different colours.
Wherein, red agricultural film can transmit feux rouges, prevent the light of other unfavorable plant growths from passing through, to meet crop to feux rouges
Demand.It is prosperous for raising rice seedlings, rice shoot；Cover beet, high sugar content；Carrot is cultivated, root is thicker；Plant leek, then blade is thick,
Listing is early, and yield is high.Purple agricultural film can make the increase of purple light light transmittance, be advantageous to the nutrient increase and accumulation of crop, can improve production
Amount, improving quality.It is mainly used in solanaceous vegetables and the Green leaf vegetable cultivation of winter-spring season or vinyl house.Silver gray agricultural film has anti-
Penetrate ultraviolet, repellent aphid, trialeurodes vaporariorum, mitigate the effect of crop virosis, to insects such as phyllotreta striolata, aulacophora femoralis, weevils
Also there is repellent action；Weed growth can also be suppressed, and Water-saving effect is good.Cultivated suitable for spring or summer and autumn diseases prevention heat resistanceheat resistant, such as
Solanaceous vegetables, melon vegetables etc..Yellow agricultural film covering yellow film can increase gold-tinted, can pass through red, yellow, orange-colored light, can exclude green grass or young crops,
Purple light.Cucumber is covered, can promote to budding to bloom, volume increase more than 30%；Celery is covered, plant can be made tall and big, extends the edible phase.
Black agricultural membrane light transmittance is low, only below 10%, in the more regional coverages of grass, can make weeds cannot get necessary sunlight after germinateing and
Death, herbicide effect are reliable and stable；Black film heats slowly, and water retention property is good.Cool vegetables are liked in high temperature season covering, heat passes
Enter less, moisture evaporation is small, so as to promote to grow, such as uses sunshade net, cooling-down effect becomes apparent from.Optimum range is summer radish, in vain
Dish, spinach, coriander, autumn cucumber etc., perennial crop or orchard weeding use are also fine.Silver reflective membrane have it is reflective, heat-insulated,
And reduce the effect of ground temperature.It can be used as the side wall of greenhouse, greenhouse, using reflected light, Plants can be improved in the ranks and in fruit tree
The intensity of illumination of thorax, promote coloring.It can also be used for greenhouse tomato, grape, cherry, the covered ground of Apple Culture.Black and white is two-sided
Film can strengthen reflected light, can reduce ground temperature, while water conservation and herbicide effect are good.It is mainly used in summer and autumn vegetables and melon anti-
Heat cultivation, and greenhouse cultivation chicken, duck, goose, edible mushroom.Such as shared with sunshade net Small plastic shed, insect prevention, rain-proof, windproof, Shade effect
More preferably.Green agricultural film partial veil can reduce visible ray, increase green glow, thus can reduce the photosynthesis of weeds under mulch film, grow by
Suppress, so as to play a part of weed eradication；Green film is not so good as hyaline membrane to the humidification of soil, but is better than black film, to crop
Aerial growth it is favourable, obvious effect of increasing production.It is used on the vegetables such as strawberry, melon, tomato, eggplant, capsicum.Blue agriculture
For film under low light condition, blue film light transmittance is higher than hyaline membrane；Under intense light conditions, it is less than hyaline membrane again, so blue film heat insulating ability
Can be good, heating is also fast, and temperature in the shed is generally greater than 2 DEG C ~ 3 DEG C of hyaline membrane.Therefore the film is mainly used in raising rice seedlings, is advantageous to train
Short strong sprout is educated, and it is fast to be turned green after planting, tiller is more.It can be additionally used in planting vegetable, strawberry, peanut and other crops.To brassicaceous vegetable
Alternaria have good inhibiting effect.
It is compound that Chinese invention patent application number application number 201110432335.7 discloses a kind of water-resistant polyvinyl alcohol base
Film and preparation method thereof.The invention provides a kind of water-resistant polyvinyl alcohol group compound film, is for base with polyvinyl alcohol (PVA)
Body, with sodium carboxymethylcellulose (MMC), palygorskite (PGS) and straw (ST) for filler, it is prepared for using the tape casting
A kind of PVA-based blend composite film.It is demonstrated experimentally that the polyvinyl alcohol group compound film of the present invention has excellent mechanical property
（For tensile strength up to 10.22~15.87MPa, elongation at break is 189.09 ~ 436.60%）, water resistance（Xi Shui Shuai≤
10.5%, Tou Shi≤0.59gmm/m2·h·KPa）, expanded the application prospect of polyvinyl alcohol based composites；Due to adopting
It is filler with a large amount of waste plant straws of palygorskite and rural area, greatly reduces the cost of polyvinyl alcohol based composites；
It is prepared using the tape casting, technique is simple, easy to operate, and cost is low, is easy to industrialize.
Chinese invention patent application number 201610005209.6 discloses a kind of crop in cruciferae cultivation miniature temperature of mulch film
It is provided with ditch in room and its application, including furrow, bottom of trench is provided with sowing cave, sows and earthing is covered on cave, along laying plastic on ditch,
The space that the side wall of mulch film, earthing and ditch surrounds forms mulch film mini greenhouse.Crop in cruciferae milpa disclosed by the invention
Film mini greenhouse, beneficial to seed germinating growth under early spring severe cold drought condition, and can, which is prevented and treated seedling and burnt, scalds ", available for sowing in spring
Baby cabbage evening bolting business breeding practice.
According to retrieval, do not find that agricultural mulching and preparation method on prevention and control pathogens causing black leaf spot of cruciferae vegetables are related
Patent and document.In current process there is the shortcomings of scattered inequality, chromaticness muddiness in agricultural film dyestuff, while dyestuff easily oozes out film
Top layer, reducing effect.
The content of the invention
In view of the shortcomings of the prior art, the present invention proposes a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria,
So as to realize, dyestuff is uniformly dispersed in the agricultural mulching, and color fastness is high, being capable of alternaria in long-acting prevention and control brassicaceous vegetable
Generation and propagation.
To solve the above problems, the present invention uses following technical scheme：
A kind of preparation method of agricultural plastic ground membrane for prevention and control vegetables alternaria, the agricultural mulching is by the poly- second containing cobalt blue
Enol layer and stalk fibre base cloth layer are combined, and specific preparation method comprises the following steps：
A, straw is taken, peeling processing, grinding and sieving stock, powdered core are carried out after air-drying and uses glacial acetic acid/mistake
Fluoroacetic acid carries out cellulose extraction, and the cellulose after extraction carries out micronization processes using mechanical jordaning mode to cellulose, is made
Micrometer fibers element；
B, cobalt blue dye is added in the micrometer fibers element obtained to a steps, be well mixed；
C, the compound for obtaining b step is added in hot high pressure air-flow reaction zone, under the impact of hot high pressure air-flow, the fibre on surface
By strong impact and vertically into fibre web, air-flow impinges upon on defeated lace curtaining denapon after passing through fibre web, and at a certain angle
Reflect, form the reverse impact to fiber, fiber is produced the displacement of different directions, by hot high pressure air-flow certain time
Impact, the fiber in fibre web mutually tangles and close obvolvent, forms the web for being dispersed with cobalt blue dyestuff；
D, a certain amount of polyvinyl alcohol is taken, adds Nano-meter SiO_22, oxidized starch, plasticizer, glutaraldehyde, stirred at 100~200 DEG C
Mixing is mixed, obtains modified polyvinylalcohol；
E, the modified polyvinylalcohol that the web containing cobalt blue dyestuff for obtaining step c obtains with Step d adds in an extruder
Heat fusing, obtained plastifying material is extruded, form the shaping of pipe inflation, then cooled down, draw, batch, obtain blue membrane；
F, the blue membrane for obtaining step e is by sided corona treatment, hot-forming, the agriculture that obtained thickness is 0.010~0.15mm
Use composite mulching film.
Cobalt blue is a kind of pigment, belongs to bimetal composite oxide, also referred to as cobalt aluminate（CoAl2O4）, belong to spinelle knot
Structure, for temperature tolerance up to 1200~1400 DEG C, this is that general pigment is too far behind to catch up, also with fabulous dispersiveness, light resistance, weather-proof
Property, resistance to acids and bases, chemical-resistant, it is bright in colour pure, thoroughly the gas of noble quality, be a kind of tone very saturation, with distinctness
Red phase tone blue pigment；Cobalt blue does not separate out free metal ion, acid-proof alkaline because of its manufacturing process and crystal structure
It is excellent, belong to non-toxic pigment, meet US FDA standard；With infrared external reflection function, military anti-counterfeit paint and room are applied also for
Push up insulating moulding coating or material.
The preparation method of above-mentioned a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria, wherein a steps institute
State powdered core is specially using glacial acetic acid/Peracetic acid progress cellulose extraction：Added in cornstalk core after sieving
The Peracetic acid and glacial acetic acid mixed liquor that mass percent concentration is 20%~30%, are well mixed, 24 are handled at 60~80 DEG C
~36h, the material after being disposed are transferred in 300~600 mesh slurry bag, are soaked, washed with deionized water completely, until
Washings are neutrality, centrifuge removing excessive moisture, obtain cellulose of the mass dryness fraction 15%~20%.
Further, a kind of preparation method of above-mentioned agricultural plastic ground membrane for prevention and control vegetables alternaria, wherein institute
The volume ratio for stating Peracetic acid that mass percent concentration is 20%~30% and glacial acetic acid is 1:1~2:1, after the processing of stalk core raw material
Mass concentration be 10%~15%.
A kind of preparation method of above-mentioned agricultural plastic ground membrane for prevention and control vegetables alternaria, wherein cobalt blue dyestuff are added
Amount determines that the addition of cobalt blue dyestuff described in b step is preferably micron fibre according to final blue membrane use environment and area
Tie up the 3~20% of quality amount.
Further, the preparation method of above-mentioned a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria, wherein c steps
The pressure of hot high pressure air-flow described in rapid is 100~200MPa, and temperature is 60~90 DEG C, and flow velocity is 60~80m/s.
Further, the preparation method of above-mentioned a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria, wherein d steps
Polyvinyl alcohol, Nano-meter SiO_2 described in rapid2, oxidized starch, plasticizer, glutaraldehyde mass ratio be 10~15:2~5:1~3：
0.5~2：5~8.A certain amount of nano silicon is added in polyvinyl alcohol, the mechanical property of composite membrane can be improved；Add
Add oxidized starch and polyvinyl alcohol blending to improve its hydrophily, because Determination of Carboxyl Group Content in Oxidized Starches is higher, have more preferable
Dispersiveness, simultaneous oxidation starch is added to PVA（Polyvinyl alcohol）In, the intermolecular active forces of PVA are reduced, are advantageous to moisture
Son diffuses into, and it is water-soluble to increase it；The plasticizer of thermoplastic processing is mainly small-molecule substance or hydramine containing polyhydroxy
Class material, amide substance, these materials can form hydrogen bond with the hydroxyl on PVA strands, mutual so as to reduce PVA
The probability of hydrogen bond is formed, PVA fusing point is reduced, PVA is realized thermoplastic processing.Present invention selection glycerine is plasticizer, glycerine
Make conventional polyalcohols plasticizer, glycerine can increase PVA segmental mobility, reduce clean area, so as to reduce fusing point；It is logical
Cross chemical crosslinking to be modified PVA, crosslinking agent typically has difunctional such as glutaraldehyde, and PVA aldolisations can cause hydroxyl
Content is reduced, the increase of c h bond content, and therefore, for the PVA film of chemical crosslinking, with the increase of chemical crosslinking time, PVA is handed over
Connection degree improves, and crystallinity improves, and structure is more stable, and the pure water infiltration capacity of film is lower；Tie in the aperture being chemically crosslinked for film
Structure does not influence, and the mechanical property of film increases in dry state with the increase of the degree of cross linking, but in hygrometric state, with the degree of cross linking
Increase and become fragile；The processing of heat can cause the aperture of film to shrink, but the mechanical property under the compressive property of film and hygrometric state obtains
Improve.
The preparation method of above-mentioned a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria, wherein described in step e
It is 250~300 DEG C to heat melting temperature.
Further, the preparation method of above-mentioned a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria, wherein f steps
The bombardment intensity of electrode is 10~15Wmin/m during sided corona treatment described in rapid2.The purpose of sided corona treatment is to change perhaps
The surface energy of more stocks, makes it easy to that same printing-ink, coating material and adhesive are bonding, and all stocks are manufacturing
During carry out some processing after just there is preferable adhesiveness.The sided corona treatment method of plastic sheeting：In processing unit
Apply high-frequency high-voltage, make its corona discharge, produce tiny intensive hyacinthine spark.After air ionization caused various grades from
Son in the presence of highfield, accelerate and the plastic products in shock treatment device, the energy of these plasma particles typically exist
Several to tens electron-volts, it is close with the chemical bond energy of plastic molecules, accordingly, it is capable to which the chemical bond for inducing frosting molecule breaks
Split and degrade, increase surface roughness.In corona discharge, substantial amounts of ozone can be also produced.Ozone is a kind of strong oxidizer, is made
Plastic surface layer molecular oxidation, produce carbonyls, per-compound etc..In addition, sided corona treatment also have except degreasing, steam and
Dust and dirt etc. acts on, and after above-mentioned physics and chemical modification, can be obviously improved the wetability and tack of frosting.It is above-mentioned
A kind of preparation method of agricultural plastic ground membrane for prevention and control vegetables alternaria, hot-forming wherein described in f steps is to adopt
With the hot-rolling roll forming that temperature is 80~100 DEG C.
The present invention also provides the agripast for prevention and control vegetables alternaria that a kind of above-mentioned preparation method is prepared
Mulch film.
The present invention proposes a kind of agricultural plastic ground membrane and preparation method for prevention and control vegetables alternaria, and its technology point exists
In the mulch film for preparing two-layer compound, barrier layer is constructed to suppress to the cyan coloring layer of alternaria, while is aided with the fiber of densification
Net is obstructed.The mulch film is combined by the polyvinyl alcohol layer containing cobalt blue and stalk fibre base cloth layer；First stalk fibre is beaten
It is broken and add cobalt blue dye, fiber is mutually tangled and networking using hot high pressure air-flow, then with modified polyvinylalcohol etc. in auxiliary agent
The lower extrusion-blown modling of effect obtains blue membrane, and the winding of stalk fibre promotes the scattered of dyestuff, last sided corona treatment, hot pressing
Obtain composite mulching film.Its remarkable result is to make to be closely wound between stalk fibre by hot high pressure air-flow, strengthens the guarantor of cobalt blue dyestuff
Shield, avoids oozing out；Further promote the dispersed of cobalt blue, the uniform blue film of color can be obtained, it is ensured that temperature in the shed compared with
General hyaline membrane is high, has good inhibitory action to the alternaria of brassicaceous vegetable.
The present invention is used for agricultural plastic ground membrane of prevention and control vegetables alternaria and preparation method thereof, has following beneficial to effect
Fruit：
1. on the basis of traditional agricultural mulching, the barrier layer in two-layer compound mulch film will be constructed to suppress alternaria by the present invention
Cyan coloring layer, while the web for being aided with densification is obstructed and the fixing of dye, can effectively prevention and control brassicaceous vegetable sense
Alternaria is contaminated, plays a part of being incubated water conservation, and can avoids that traditional dyeing film color is easy to fall off, and colourity persistence is poor, dye
The problems such as expecting skewness；
It is by passing through modification polyvinyl alcohol film and dividing 2. the present invention is used for the agricultural plastic ground membrane of prevention and control vegetables alternaria
Dissipating has the stalk cellulose net of cobalt blue dyestuff, is prepared by sided corona treatment, hot-pressing processing etc., not only thin film mechanical performance is excellent
It is different, and film is green, biodegradable；
3. preparation method of the present invention is simple, raw material is easy to get, and has preferable market application value and promotional value.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but this should not be interpreted as to the present invention
Scope be only limitted to following example.In the case where not departing from above method thought of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
Agricultural plastic ground membrane step for prevention and control vegetables alternaria prepared by the present invention is as follows：
A, straw is taken, peeling processing, grinding and sieving stock are carried out after air-drying, is added in cornstalk core after sieving
The Peracetic acid and glacial acetic acid mixed liquor that mass percent concentration is 20%, wherein mass percent concentration are 20% Peracetic acid
Volume ratio with glacial acetic acid is 1:1, it is well mixed, 36h is handled at 60 DEG C, the quality of material concentration after being disposed is 15%,
It is transferred to completely in 300 mesh slurry bag, is soaked, washed with deionized water, until washings are neutrality, it is more centrifuges removing
Remaining moisture, cellulose of the mass dryness fraction 15% is obtained, micronization processes are then carried out to cellulose using mechanical jordaning mode, are made micro-
Rice cellulose；
B, cobalt blue dye is added in the micrometer fibers element obtained to a steps, the addition of cobalt blue dyestuff is micrometer fibers quality amount
5%, be well mixed；
C, the compound for obtaining b step is added in hot high pressure air-flow reaction zone, is 100MPa in pressure, temperature is 90 DEG C, stream
Under impact of the speed for 60m/s hot high pressure air-flow, the fiber on surface is because by strong impact and vertically into fibre web, air-flow
Impinge upon after through fibre web on defeated lace curtaining, and reflect at a certain angle, form the reverse impact to fiber, produce fiber
The displacement of different directions, by the impact of hot high pressure air-flow certain time, the fiber in fibre web mutually tangles and close obvolvent, shape
Into the web for being dispersed with cobalt blue dyestuff；
D, a certain amount of polyvinyl alcohol is taken, adds Nano-meter SiO_22, oxidized starch, plasticizer, glutaraldehyde, its mass ratio be 10:5:
1:1:5, it is stirred at 150 DEG C, obtains modified polyvinylalcohol；
E, the modified polyvinylalcohol that the web containing cobalt blue dyestuff for obtaining step c obtains with Step d adds in an extruder
Heat fusing, heating melting temperature are 300 DEG C, and obtained plastifying material is extruded, and form the shaping of pipe inflation, then cool down, draw,
Batch, obtain blue membrane；
F, for the blue membrane for obtaining step e by sided corona treatment, hot-forming, the bombardment intensity of electrode is 10Wmin/m2,
Hot-forming is to use temperature that the agricultural composite mulching film that thickness is 0.030mm is made for 100 DEG C of hot-rolling roll forming.
The mechanical property of final composite mulching film, color fastness, fungistatic effect test are shown in Table 1.
Embodiment 2
Agricultural plastic ground membrane step for prevention and control vegetables alternaria prepared by the present invention is as follows：
A, straw is taken, peeling processing, grinding and sieving stock are carried out after air-drying, is added in cornstalk core after sieving
The Peracetic acid and glacial acetic acid mixed liquor that mass percent concentration is 30%, wherein mass percent concentration are 30% Peracetic acid
Volume ratio with glacial acetic acid is 2:1, it is well mixed, 24h is handled at 60 DEG C, the quality of material concentration after being disposed is 10%,
It is transferred to completely in 600 mesh slurry bag, is soaked, washed with deionized water, until washings are neutrality, it is more centrifuges removing
Remaining moisture, cellulose of the mass dryness fraction 20% is obtained, micronization processes are then carried out to cellulose using mechanical jordaning mode, are made micro-
Rice cellulose；
B, cobalt blue dye is added in the micrometer fibers element obtained to a steps, the addition of cobalt blue dyestuff is micrometer fibers quality amount
10%, be well mixed；
C, the compound for obtaining b step is added in hot high pressure air-flow reaction zone, is 200MPa in pressure, temperature is 80 DEG C, stream
Under impact of the speed for 70m/s hot high pressure air-flow, the fiber on surface is because by strong impact and vertically into fibre web, air-flow
Impinge upon after through fibre web on defeated lace curtaining, and reflect at a certain angle, form the reverse impact to fiber, produce fiber
The displacement of different directions, by the impact of hot high pressure air-flow certain time, the fiber in fibre web mutually tangles and close obvolvent, shape
Into the web for being dispersed with cobalt blue dyestuff；
D, a certain amount of polyvinyl alcohol is taken, adds Nano-meter SiO_22, oxidized starch, plasticizer, glutaraldehyde, its mass ratio be 15:5:
2:0.5:6, it is stirred at 200 DEG C, obtains modified polyvinylalcohol；
E, the modified polyvinylalcohol that the web containing cobalt blue dyestuff for obtaining step c obtains with Step d adds in an extruder
Heat fusing, heating melting temperature are 300 DEG C, and obtained plastifying material is extruded, and form the shaping of pipe inflation, then cool down, draw,
Batch, obtain blue membrane；
F, for the blue membrane for obtaining step e by sided corona treatment, hot-forming, the bombardment intensity of electrode is 12Wmin/m2,
Hot-forming is to use temperature that the agricultural composite mulching film that thickness is 0.015mm is made for 100 DEG C of hot-rolling roll forming.
The mechanical property of final composite mulching film, color fastness, fungistatic effect test are shown in Table 1.
Embodiment 3
Agricultural plastic ground membrane step for prevention and control vegetables alternaria prepared by the present invention is as follows：
A, straw is taken, peeling processing, grinding and sieving stock are carried out after air-drying, is added in cornstalk core after sieving
The Peracetic acid and glacial acetic acid mixed liquor that mass percent concentration is 25%, wherein mass percent concentration are 25% Peracetic acid
Volume ratio with glacial acetic acid is 1.5:1, it is well mixed, handles 28h at 60 DEG C, the quality of material concentration after being disposed is
10%, it is transferred to completely in 500 mesh slurry bag, is soaked, washed with deionized water, until washings are neutrality, centrifuges de-
Except excessive moisture, cellulose of the mass dryness fraction 18% is obtained, micronization processes, system are then carried out to cellulose using mechanical jordaning mode
Obtain micrometer fibers element；
B, cobalt blue dye is added in the micrometer fibers element obtained to a steps, the addition of cobalt blue dyestuff is micrometer fibers quality amount
8%, be well mixed；
C, the compound for obtaining b step is added in hot high pressure air-flow reaction zone, is 150MPa in pressure, temperature is 70 DEG C, stream
Under impact of the speed for 65m/s hot high pressure air-flow, the fiber on surface is because by strong impact and vertically into fibre web, air-flow
Impinge upon after through fibre web on defeated lace curtaining, and reflect at a certain angle, form the reverse impact to fiber, produce fiber
The displacement of different directions, by the impact of hot high pressure air-flow certain time, the fiber in fibre web mutually tangles and close obvolvent, shape
Into the web for being dispersed with cobalt blue dyestuff；
D, a certain amount of polyvinyl alcohol is taken, adds Nano-meter SiO_22, oxidized starch, plasticizer, glutaraldehyde, its mass ratio be 12:3:
2:2:8, it is stirred at 100 DEG C, obtains modified polyvinylalcohol；
E, the modified polyvinylalcohol that the web containing cobalt blue dyestuff for obtaining step c obtains with Step d adds in an extruder
Heat fusing, heating melting temperature are 280 DEG C, and obtained plastifying material is extruded, and form the shaping of pipe inflation, then cool down, draw,
Batch, obtain blue membrane；
F, for the blue membrane for obtaining step e by sided corona treatment, hot-forming, the bombardment intensity of electrode is 14Wmin/m2,
Hot-forming is to use temperature that the agricultural composite mulching film that thickness is 0.030mm is made for 90 DEG C of hot-rolling roll forming.
The mechanical property of final composite mulching film, color fastness, fungistatic effect test are shown in Table 1.
Embodiment 4
Agricultural plastic ground membrane step for prevention and control vegetables alternaria prepared by the present invention is as follows：
A, straw is taken, peeling processing, grinding and sieving stock are carried out after air-drying, is added in cornstalk core after sieving
The Peracetic acid and glacial acetic acid mixed liquor that mass percent concentration is 22%, wherein mass percent concentration are 22% Peracetic acid
Volume ratio with glacial acetic acid is 1:1, it is well mixed, 36h is handled at 70 DEG C, the quality of material concentration after being disposed is 13%,
It is transferred to completely in 500 mesh slurry bag, is soaked, washed with deionized water, until washings are neutrality, it is more centrifuges removing
Remaining moisture, cellulose of the mass dryness fraction 16% is obtained, micronization processes are then carried out to cellulose using mechanical jordaning mode, are made micro-
Rice cellulose；
B, cobalt blue dye is added in the micrometer fibers element obtained to a steps, the addition of cobalt blue dyestuff is micrometer fibers quality amount
15%, be well mixed；
C, the compound for obtaining b step is added in hot high pressure air-flow reaction zone, is 180MPa in pressure, temperature is 80 DEG C, stream
Under impact of the speed for 75m/s hot high pressure air-flow, the fiber on surface is because by strong impact and vertically into fibre web, air-flow
Impinge upon after through fibre web on defeated lace curtaining, and reflect at a certain angle, form the reverse impact to fiber, produce fiber
The displacement of different directions, by the impact of hot high pressure air-flow certain time, the fiber in fibre web mutually tangles and close obvolvent, shape
Into the web for being dispersed with cobalt blue dyestuff；
D, a certain amount of polyvinyl alcohol is taken, adds Nano-meter SiO_22, oxidized starch, plasticizer, glutaraldehyde, its mass ratio be 13:2:
3:1.5:6, it is stirred at 120 DEG C, obtains modified polyvinylalcohol；
E, the modified polyvinylalcohol that the web containing cobalt blue dyestuff for obtaining step c obtains with Step d adds in an extruder
Heat fusing, heating melting temperature are 250~300 DEG C, and obtained plastifying material is extruded, and form the shaping of pipe inflation, then cool down,
Draw, batch, obtain blue membrane；
F, for the blue membrane for obtaining step e by sided corona treatment, hot-forming, the bombardment intensity of electrode is 15Wmin/m2,
Hot-forming is to use temperature that the agricultural composite mulching film that thickness is 0.050mm is made for 85 DEG C of hot-rolling roll forming.
The mechanical property of final composite mulching film, color fastness, fungistatic effect test are shown in Table 1.
Embodiment 5
Agricultural plastic ground membrane step for prevention and control vegetables alternaria prepared by the present invention is as follows：
A, straw is taken, peeling processing, grinding and sieving stock are carried out after air-drying, is added in cornstalk core after sieving
The Peracetic acid and glacial acetic acid mixed liquor that mass percent concentration is 20%, wherein mass percent concentration are 20% Peracetic acid
Volume ratio with glacial acetic acid is 2:1, it is well mixed, 30h is handled at 75 DEG C, the quality of material concentration after being disposed is 13%,
It is transferred to completely in 350 mesh slurry bag, is soaked, washed with deionized water, until washings are neutrality, it is more centrifuges removing
Remaining moisture, cellulose of the mass dryness fraction 16% is obtained, micronization processes are then carried out to cellulose using mechanical jordaning mode, are made micro-
Rice cellulose；
B, cobalt blue dye is added in the micrometer fibers element obtained to a steps, the addition of cobalt blue dyestuff is micrometer fibers quality amount
5%, be well mixed；
C, the compound for obtaining b step is added in hot high pressure air-flow reaction zone, is 150MPa in pressure, temperature is 70 DEG C, stream
Under impact of the speed for 80m/s hot high pressure air-flow, the fiber on surface is because by strong impact and vertically into fibre web, air-flow
Impinge upon after through fibre web on defeated lace curtaining, and reflect at a certain angle, form the reverse impact to fiber, produce fiber
The displacement of different directions, by the impact of hot high pressure air-flow certain time, the fiber in fibre web mutually tangles and close obvolvent, shape
Into the web for being dispersed with cobalt blue dyestuff；
D, a certain amount of polyvinyl alcohol is taken, adds Nano-meter SiO_22, oxidized starch, plasticizer, glutaraldehyde, its mass ratio be 10:5:
1.5: 2:6, it is stirred at 180 DEG C, obtains modified polyvinylalcohol；
E, the modified polyvinylalcohol that the web containing cobalt blue dyestuff for obtaining step c obtains with Step d adds in an extruder
Heat fusing, heating melting temperature are 250 DEG C, and obtained plastifying material is extruded, and form the shaping of pipe inflation, then cool down, draw,
Batch, obtain blue membrane；
F, for the blue membrane for obtaining step e by sided corona treatment, hot-forming, the bombardment intensity of electrode is 13Wmin/m2,
Hot-forming is to use temperature that the agricultural composite mulching film that thickness is 0.050mm is made for 90 DEG C of hot-rolling roll forming.
The mechanical property of final composite mulching film, color fastness, fungistatic effect test are shown in Table 1.
Comparative example 1
The common commercially available Double-layered transparent composite mulching film without cobalt blue, thickness 0.05mm, the mechanical property of final composite mulching film, color
Fastness, fungistatic effect test are shown in Table 1.
Comparative example 2
Stalk fibre web frame is free of according to prepared by the method for embodiment 1, and the polyvinyl alcohol mulch film containing cobalt blue dyestuff, thickness is
0.05mm, the mechanical property of final mulch film, color fastness, fungistatic effect test are shown in Table 1.
Wherein fungistatic effect, by the way that during mulch film use, whether observation brassicaceous vegetable infects alternaria
Judge.
The performance test for the product that the embodiment 1~5 of table 1 and comparative example 1, comparative example 2 obtain
Claims (10)
- A kind of 1. preparation method of agricultural plastic ground membrane for prevention and control vegetables alternaria, it is characterised in that specific preparation side Method comprises the following steps：A, straw is taken, peeling processing, grinding and sieving stock, powdered core are carried out after air-drying and uses glacial acetic acid/mistake Fluoroacetic acid carries out cellulose extraction, and the cellulose after extraction carries out micronization processes using mechanical jordaning mode to cellulose, is made Micrometer fibers element；B, cobalt blue dye is added in the micrometer fibers element obtained to a steps, be well mixed；C, the compound for obtaining b step is added in hot high pressure air-flow reaction zone, under the impact of hot high pressure air-flow, the fibre on surface By strong impact and vertically into fibre web, air-flow impinges upon on defeated lace curtaining denapon after passing through fibre web, and at a certain angle Reflect, form the reverse impact to fiber, fiber is produced the displacement of different directions, by hot high pressure air-flow certain time Impact, the fiber in fibre web mutually tangles and close obvolvent, forms the web for being dispersed with cobalt blue dyestuff；D, a certain amount of polyvinyl alcohol is taken, adds Nano-meter SiO_22, oxidized starch, plasticizer, glutaraldehyde, stirred at 100~200 DEG C Mixing is mixed, obtains modified polyvinylalcohol；E, the modified polyvinylalcohol that the web containing cobalt blue dyestuff for obtaining step c obtains with Step d adds in an extruder Heat fusing, obtained plastifying material is extruded, form the shaping of pipe inflation, then cooled down, draw, batch, obtain blue membrane；F, the blue membrane for obtaining step e is by sided corona treatment, hot-forming, the agriculture that obtained thickness is 0.010~0.15mm Use composite mulching film.
- 2. the preparation method of a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria according to claim 1, it is special Sign is that powdered core described in a steps carries out cellulose extraction using glacial acetic acid/Peracetic acid and is specially：Sieving The Peracetic acid and glacial acetic acid mixed liquor that mass percent concentration is 20%~30% are added in cornstalk core afterwards, is well mixed, 24~36h is handled at 60~80 DEG C, the material after being disposed is transferred in 300~600 mesh slurry bag completely, uses deionized water Soaked, washed, until washings are neutrality, centrifuged removing excessive moisture, obtain fiber of the mass dryness fraction 15%~20% Element.
- 3. the preparation method of a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria according to claim 2, it is special Sign is that the Peracetic acid and the volume ratio of glacial acetic acid that the mass percent concentration is 20%~30% are 1:1~2:1, stalk core Mass concentration after Feedstock treating is 10%~15%.
- 4. the preparation method of a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria according to claim 1, it is special Sign is that the addition of cobalt blue dyestuff described in b step is the 3~20% of micrometer fibers quality amount.
- 5. the preparation method of a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria according to claim 1, it is special Sign is that the pressure of hot high pressure air-flow described in step c is 100~200MPa, and temperature is 60~90 DEG C, and flow velocity is 60~80m/ s。
- 6. the preparation method of a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria according to claim 1, it is special Sign is, polyvinyl alcohol described in Step d, Nano-meter SiO_22, oxidized starch, plasticizer, glutaraldehyde mass ratio be 10~15:2 ~5:1~3：0.5~2：5~8.
- 7. the preparation method of a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria according to claim 1, it is special Sign is that it is 250~300 DEG C that melting temperature is heated described in step e.
- 8. the preparation method of a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria according to claim 1, it is special Sign is that the bombardment intensity of electrode is 10~15Wmin/m during sided corona treatment described in f steps2。
- 9. the preparation method of a kind of agricultural plastic ground membrane for prevention and control vegetables alternaria according to claim 1, it is special Sign is, hot-forming to use temperature as 80~100 DEG C of hot-rolling roll forming described in f steps.
- 10. the agriculture for prevention and control vegetables alternaria being prepared according to preparation method described in claim 1~9 any one Use plastic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711178570.XA CN107778738A (en) | 2017-11-23 | 2017-11-23 | A kind of agricultural plastic ground membrane and preparation method for prevention and control vegetables alternaria |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711178570.XA CN107778738A (en) | 2017-11-23 | 2017-11-23 | A kind of agricultural plastic ground membrane and preparation method for prevention and control vegetables alternaria |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107778738A true CN107778738A (en) | 2018-03-09 |
Family
ID=61430400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711178570.XA Pending CN107778738A (en) | 2017-11-23 | 2017-11-23 | A kind of agricultural plastic ground membrane and preparation method for prevention and control vegetables alternaria |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107778738A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN116267304A (en) * | 2023-05-10 | 2023-06-23 | 江苏省农业科学院 | Application of isolation net in strawberry breeding and strawberry isolation breeding method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106366349A (en) * | 2016-08-29 | 2017-02-01 | 昆明理工大学 | Preparation method for corncob micron fiber-reinforced oxycellulose/polyvinyl alcohol blending mulching film |
-
2017
- 2017-11-23 CN CN201711178570.XA patent/CN107778738A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106366349A (en) * | 2016-08-29 | 2017-02-01 | 昆明理工大学 | Preparation method for corncob micron fiber-reinforced oxycellulose/polyvinyl alcohol blending mulching film |
Non-Patent Citations (3)
| Title |
|---|
| 佚名: ""光与病虫害"", 《乡镇论坛》 * |
| 牛松森: ""小资料—在农业生产中兴起的光生物学"", 《生态农业研究》 * |
| 王开苗 等 主编: "《染整技术基础》", 31 March 2015, 东华大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN116267304A (en) * | 2023-05-10 | 2023-06-23 | 江苏省农业科学院 | Application of isolation net in strawberry breeding and strawberry isolation breeding method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Pandey et al. | Resistance to early blight of tomato with respect to various parameters of disease epidemics | |
| US5771630A (en) | Agricultural covering material | |
| CN104255374A (en) | Semi-opening greenhouse cultivation technology for peach tree in low-latitude plateau area | |
| CN107778738A (en) | A kind of agricultural plastic ground membrane and preparation method for prevention and control vegetables alternaria | |
| CN106035059B (en) | A kind of method of artificial synthesized anti-clubroot brassica napus | |
| CN103329714B (en) | Gold bud tea quick gardening method | |
| Weston Jr | PRODUCTION AND DISPERSAL OF CONIDIA IN THE PHILIPPINE SCLEROSPORAS OF MAIZE¹ | |
| CN109937774A (en) | Black three layers of composite mulching film of high photosynthetic efficiency environment-friendlyweather-proof weather-proof silvery white and preparation method thereof | |
| Shahak et al. | Photoselective netting: an emerging approach in protected agriculture | |
| CN111990146B (en) | Integrated control method for honey pomelo scab | |
| Jat et al. | Seed yield and quality as influenced by growing conditions in hybrid seed production of bitter gourd (Momordica charantia L.) cv. Pusa Hybrid-1 | |
| CN110870424B (en) | Light-transmitting material based on specific wavelength reservation and application of composite carrier thereof in agriculture | |
| CN110741856A (en) | Preparation method of insect-resistant anti-aging sunshade net | |
| CN109575423A (en) | The ecological degradative plastic film of Liaoning Area corn | |
| CN109006084A (en) | The black central, clear Multifunctional composite mulching film of two silver medals of one kind and its manufacturing method | |
| CN116076505A (en) | Attractant for camellia oleifera pollinata insects, use method and application thereof | |
| Mahadeo et al. | Vanilla: Culture, reproduction, phytochemistry, curing, pest, and diseases | |
| Vinod et al. | EARLY PERFORMANCE OF SOME CLONES OF | |
| CN107828230A (en) | It is a kind of to turn light transparent plastic canopy film and preparation method thereof for green cucumber | |
| CN208724530U (en) | A kind of black central, clear Multifunctional composite mulching film of two silver medals | |
| CN208850309U (en) | A kind of transparent black three colors Multifunctional composite mulching film of silver | |
| JP2004344125A (en) | Method for culturing summer-autumn tomato | |
| CN106835724A (en) | A kind of degradable mulch for coating tung oil | |
| CN109937773A (en) | White three layers of composite mulching film of high photosynthetic efficiency environment-friendlyweather-proof weather-proof silvery white and preparation method thereof | |
| Singh et al. | Major diseases of sorghum and their management |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180309 |
|
| RJ01 | Rejection of invention patent application after publication |