CN106900702A - A kind of preparation method of diazinon coated slow-release granule - Google Patents
A kind of preparation method of diazinon coated slow-release granule Download PDFInfo
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- CN106900702A CN106900702A CN201710139107.8A CN201710139107A CN106900702A CN 106900702 A CN106900702 A CN 106900702A CN 201710139107 A CN201710139107 A CN 201710139107A CN 106900702 A CN106900702 A CN 106900702A
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- diazinon
- coating
- diatomite particle
- preparation
- coated slow
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/26—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests in coated particulate form
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/10—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
- A01N57/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds containing heterocyclic radicals
Abstract
The invention discloses a kind of preparation method of diazinon coated slow-release granule, main comprising the step of prepares the suspension containing diazinon, prepare and carry medicine diatomite particle, prepare coating agent and coating, be fed into the suspension of diazinon in the hole of diatomite particle by the present invention, diazinon molecule is attached among the hole of diatomite particle by Van der Waals force, avoid the burst release of agricultural chemicals, by carrying medicine diatomite particle peplos, further slow down the release of diazinon, diazinon coated slow-release granule prepared by the inventive method is compared with active compound, and with sustained release, long-acting the characteristics of, amount of application is substantially reduced, utilization rate is low to be greatly improved, so as to the effect of former pesticide control pest and disease damage can be improved, reduce agriculture production cost, and agricultural chemicals can be reduced or avoided in use to the pollution of environment, with preferable environmental protection effect.
Description
Technical field
The present invention relates to field of pesticide preparation, more particularly to a kind of preparation of diazinon coated slow-release granule
Method.
Background technology
Agricultural chemicals is defence important biological disaster, ensures national food production, promotes agricultural output sustained, stable growth
Important substance basis, the effective rate of utilization of conventional type agricultural chemicals only has 20-30%, and loss late by all means is up to 50-
60%, this is not only economically a kind of waste, and causes environmental pollution.The sixties due to environmentally friendly scientific development, to keep away
Exempt from pollution of the drift to environment and crop when pesticide powder is dispensed, pesticide granule obtains universal popularization and application in the whole world, with
Common pesticides agent is compared to advantages below：1st, it is directional during dispenser, spreading medicament is reached target, 2, powder it is non-cohesive
In on plant stem-leaf, it is to avoid directly contact produces poisoning, 3, dispenser when non-dusting, it is free from environmental pollution, 4, controllable granulation agent
The rate of release of middle active ingredient, extends the lasting period.
Diazinon be wide spectrum, efficiently, the organophosphorus pesticide of low toxicity, with tagging, stomach toxicity, stifling and certain interior suction make
With its mechanism of action is acetylcholine esterase inhibition, has favorable effect to various pests such as Lepidoptera, Homopteras, can also be mixed
Plant preventing and treating subterranean pest-insect, it is adaptable to prevent and treat tealeaves, fruit, cotton, paddy rice, wheat, vegetables, flowers and other crops insect and mite class
Preventing and treating.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of diazinon coated slow-release granule
Preparation method, diazinon slowly constantly can be discharged into environment in the diazinon coated slow-release granule for obtaining, and improve diazine
The technical problem that phosphorus active compound utilization rate is low, effect is poor.
To achieve the above object, the invention provides following technical scheme：A kind of system of diazinon coated slow-release granule
Preparation Method, it is characterised in that：Mainly include the following steps that：
The suspension of step one, preparation containing diazinon：Diazinon is added to the water, then ultrasonic disperse, obtains containing two
The suspension of piperazine phosphorus, diazinon：Water quality ratio=1：2-7；
Step 2, preparation carry medicine diatomite particle：By diazinon：Diatomite particle=1：3-6.8 mass ratioes, first by drying
Diatomite particle be placed in closed container, pumping is allowed to seal after the vacuum state, then by the suspension containing diazinon
In liquid injection container, after maintaining 2-3h, open vacuum plant, using the pressure difference in atmospheric pressure and vacuum plant by diazinon
Suspension be fed into the hole of diatomite particle, by after 10-20min, freeze-drying obtains carrying medicine diatomite particle；
Step 3, preparation coating agent：15-20 weight portions coated fertilizer and 6-10 weight portion coalescents are well mixed,
It is subsequently adding 0.3-0.6 weight portions stabilizer and forms coating agent after 5-8 weight portion acetonitriles are sufficiently mixed；Step 4, coating：Will
Load medicine diatomite particle is placed in fluid bed and blows out fluidized state, is preheated at 60-80 DEG C, is delivered to coating agent with delivery pump
At the nozzle of atomising device, and spray on the load medicine diatomite particle in fluidized state, atomizing pressure is 0.3-0.5Mpa,
The flow of coating agent conveying is controlled in 500-1000mL/h, coating agent is sufficiently mixed with medicine diatomite particle is carried, uniform coating,
The thickness control of coating in 0.1-0.3mm, through ventilating and cooling after, at a temperature of 80-100 DEG C dry, that is, obtain diazinon coating
Sustained-release granular formulation.
As a further improvement on the present invention, one layer of compound containing diazinon is first coated before the step 4 coating,
Comprise the following steps that：
1) compound containing diazinon, is prepared：By 2-25 weight portion diazinons, 15-40 weight portion inserts, 5-10 weight
Part adhesive, 1-5 parts surfactants, 10-20 weight portion water is uniformly mixed；
2), take carry medicine diatomite particle and the compound containing diazinon according to 1：1-3 mass ratioes mix, through mediating, making
Grain, dry, screening obtain one layer of load medicine diatomite particle of the compound containing diazinon of cladding.
As a further improvement on the present invention, para-diazines P with wrapping film sustained-release granular formulation carries out multilayer coating structure and coating, specifically
Process is as follows：
1) the diazinon coated slow-release granule for, being obtained with the step 4 adds the compound containing diazinon as core,
Core：Compound mass ratio=1 containing diazinon：1-3, through mediating, granulating, then uses coating agent coating again；
2), said process is repeated 2-6 times.
As a further improvement on the present invention, the coated fertilizer is selected from urea formaldehyde resin, polyterpene resin, polyvinyl alcohol
Any one in urea phosphate, polyvinyl acetal, methylol ethylene-urea resin；The coalescents are selected from sulfonated olefins, sulphur
Any one in fossil waxes, chlorinated paraffin or terpenol.
As a further improvement on the present invention, the inserts is the one kind or several in pyrophillite, illite or montmorillonite
Kind.
Contain compared with polyhydroxy in pyrophillite and illite, suspension is good in water, stable chemical performance, in neutrality, nothing has
Malicious harmful element, can be medium with agricultural chemicals combination absorption affinity, and side reaction does not occur, and long-term use does not produce secondary work not only to soil
With also because illite contains potassium composition, potassium ion in being discharged in soil is a kind of preferable potash fertilizer raw material.
As a further improvement on the present invention, the surfactant is selected from Tween-80, wood
Mahogany sulfonate-epoxy propane copolymer, lignose alcohol ether carboxylate, castor oil acid alkanolamide or methyl ricinolcic acid sulfuric acid
One or more in ammonium.
As a further improvement on the present invention, described adhesive is in polyvinyl alcohol, animal glue, carboxymethylcellulose calcium
Plant or various.
As a further improvement on the present invention, the stabilizer is one or more in epoxidized soybean oil, calcium ricinoleate.
The preparation method of diazinon coated slow-release granule of the invention, diatomite is fed into by the suspension of diazinon
In the hole of grain, diazinon molecule is attached among the hole of diatomite particle by Van der Waals force, it is to avoid the burst release of agricultural chemicals, is led to
Cross and carrying medicine diatomite particle peplos, further slow down the release of diazinon, the high-specific surface area of diatomite particle is conducive to
Its carrying to agricultural chemicals, and and the absorption affinity between diazinon molecule it is suitable, while absorption diazinon molecule and realize that its is steady
Fixed slow controlled release.The inventive method prepare diazinon coated slow-release granule compared with active compound, and with sustained release, long-acting spy
Point, amount of application is substantially reduced, and utilization rate is low to be greatly improved, so as to the effect of former pesticide control pest and disease damage can be improved, reduces agriculture
Industry production cost, and agricultural chemicals can be reduced or avoided in use to the pollution of environment, with preferable environmental protection effect.
Specific embodiment
The present invention is described in further detail below in conjunction with embodiment.
Embodiment 1
A kind of preparation method of diazinon coated slow-release granule
1st, the suspension containing diazinon is prepared：By in 10g diazinons addition 55g water, then ultrasonic disperse, obtains containing two
The suspension of piperazine phosphorus.
2nd, prepare and carry medicine diatomite particle：First the dry diatomite particles of 40g are placed in closed container, pumping makes part
In being sealed after vacuum state, then by the suspension injection container containing diazinon, after maintaining 3h, open vacuum plant is sharp
The suspension of diazinon is fed into the hole of diatomite particle with the pressure difference in atmospheric pressure and vacuum plant, is passed through
After 18min, freeze-drying obtains carrying medicine diatomite particle.
3rd, coating agent is prepared：18g methylols ethylene-urea resin and 7g sulfonated olefins are well mixed, 0.4g castors are subsequently adding
Numb acid calcium and 7g acetonitriles form coating agent after being sufficiently mixed.
4th, coating：Will carry medicine diatomite particle be placed in fluid bed blow out fluidized state, preheated at 60 DEG C, use delivery pump
Coating agent is delivered at the nozzle of atomising device, and is sprayed on the load medicine diatomite particle in fluidized state, atomization pressure
Power is 0.3Mpa, and the flow of coating agent conveying is controlled in 600mL/h, coating agent is fully mixed with medicine diatomite particle particle is carried
Close, uniform coating, the thickness control of coating in 0.1mm, through ventilating and cooling after, at a temperature of 80 DEG C dry, that is, obtain diazinon
Coated slow-release granule.
Embodiment 2
A kind of preparation method of diazinon coated slow-release granule
1st, the suspension containing diazinon is prepared：By in 10g diazinons addition 46g water, then ultrasonic disperse, obtains containing two
The suspension of piperazine phosphorus.
2nd, prepare and carry medicine diatomite particle：First the dry diatomite particles of 68g are placed in closed container, pumping makes part
In being sealed after vacuum state, then by the suspension injection container containing diazinon, after maintaining 2.5h, vacuum plant is opened,
The suspension of diazinon is fed into the hole of diatomite particle using the pressure difference in atmospheric pressure and vacuum plant, is passed through
After 20min, freeze-drying obtains carrying medicine diatomite particle.
3rd, coating agent is prepared：15g polyvinyl alcohol urea phosphate and 10g chlorinated paraffins are well mixed, 0.6g rings are subsequently adding
Oxygen soybean oil and 5g acetonitriles form coating agent after being sufficiently mixed.
4th, coating：Will carry medicine diatomite particle be placed in fluid bed blow out fluidized state, preheated at 80 DEG C, use delivery pump
Coating agent is delivered at the nozzle of atomising device, and is sprayed on the load medicine diatomite particle in fluidized state, atomization pressure
Power is 0.5Mpa, and the flow of coating agent conveying is controlled in 1000mL/h, coating agent is sufficiently mixed with medicine diatomite particle is carried,
Even coating, the thickness control of coating in 0.3mm, through ventilating and cooling after, at a temperature of 100 DEG C dry, that is, obtain diazinon coating
Sustained-release granular formulation.
Embodiment 3
A kind of preparation method of diazinon coated slow-release granule
1st, the suspension containing diazinon is prepared：By in 10g diazinons addition 22-67g water, then ultrasonic disperse, is contained
There is the suspension of diazinon.
2nd, prepare and carry medicine diatomite particle：First the dry diatomite particles of 32g are placed in closed container, pumping makes part
In being sealed after vacuum state, then by the suspension injection container containing diazinon, after maintaining 2h, open vacuum plant is sharp
The suspension of diazinon is fed into the hole of diatomite particle with the pressure difference in atmospheric pressure and vacuum plant, is passed through
After 10min, freeze-drying obtains carrying medicine diatomite particle.
3rd, the compound containing diazinon is prepared：By 2g diazinons, 15g pyrophillites, 5g polyvinyl alcohol, 1g polyoxyethylenes
Alcohol acid anhydride monoleate, 10g water are uniformly mixed.
4th, take the compound of 10g load medicine diatomite particles and 30g containing diazinon to mix, through kneading, granulation, dry, screening
Obtain one layer of load medicine diatomite particle of the compound containing diazinon of cladding.
5th, coating agent is prepared：15g urea formaldehyde resins and 6g terpenols are well mixed, 0.3g epoxidized soybean oils are subsequently adding
Coating agent is formed after being sufficiently mixed with 5g acetonitriles.
6th, coating：Will carry medicine diatomite particle be placed in fluid bed blow out fluidized state, preheated at 60 DEG C, use delivery pump
Coating agent is delivered at the nozzle of atomising device, and is sprayed on the load medicine diatomite particle in fluidized state, atomization pressure
Power is 0.3Mpa, and the flow control of coating agent conveying makes one layer of compound containing diazinon of coating agent and cladding in 500mL/h
Carry medicine diatomite particle be sufficiently mixed, uniform coating, the thickness control of coating in 0.1mm, through ventilating and cooling after, in 80 DEG C of temperature
Lower drying, that is, obtain diazinon coated slow-release granule.
Embodiment 4
A kind of preparation method of diazinon coated slow-release granule
1st, the suspension containing diazinon is prepared：By in 10g diazinons addition 25g water, then ultrasonic disperse, obtains containing two
The suspension of piperazine phosphorus.
2nd, prepare and carry medicine diatomite particle：First the dry diatomite particles of 58g are placed in closed container, pumping makes part
In being sealed after vacuum state, then by the suspension injection container containing diazinon, after maintaining 2.5h, vacuum plant is opened,
The suspension of diazinon is fed into the hole of diatomite particle using the pressure difference in atmospheric pressure and vacuum plant, is passed through
After 12min, freeze-drying obtains carrying medicine diatomite particle.
3rd, the compound containing diazinon is prepared：By 12g diazinons, 26g illites, 8g animal glue, 3g lignosulfonates-
Epoxy propane copolymer, 16g water are uniformly mixed.
4th, take the compound of 10g load medicine diatomite particles and 20g containing diazinon to mix, through kneading, granulation, dry, screening
Obtain one layer of load medicine diatomite particle of the compound containing diazinon of cladding.
5th, coating agent is prepared：18g polyterpene resins and 8g sulfonated olefins are well mixed, 0.5g epoxy soybeans are subsequently adding
Oil and 7g acetonitriles form coating agent after being sufficiently mixed.
6th, coating：Will carry medicine diatomite particle be placed in fluid bed blow out fluidized state, preheated at 65 DEG C, use delivery pump
Coating agent is delivered at the nozzle of atomising device, and is sprayed on the load medicine diatomite particle in fluidized state, atomization pressure
Power is 0.4Mpa, and the flow control of coating agent conveying makes one layer of compound containing diazinon of coating agent and cladding in 800mL/h
Carry medicine diatomite particle be sufficiently mixed, uniform coating, the thickness control of coating in 0.2mm, through ventilating and cooling after, in 90 DEG C of temperature
Lower drying, that is, obtain diazinon coated slow-release granule.
Embodiment 5
A kind of preparation method of diazinon coated slow-release granule
1st, the suspension containing diazinon is prepared：By in 10g diazinons addition 38g water, then ultrasonic disperse, obtains containing two
The suspension of piperazine phosphorus.
2nd, prepare and carry medicine diatomite particle：First the dry diatomite particles of 65g are placed in closed container, pumping makes part
In being sealed after vacuum state, then by the suspension injection container containing diazinon, after maintaining 3h, open vacuum plant is sharp
The suspension of diazinon is fed into the hole of diatomite particle with the pressure difference in atmospheric pressure and vacuum plant, is passed through
After 15min, freeze-drying obtains carrying medicine diatomite particle.
3rd, the compound containing diazinon is prepared：By 25g diazinons, 40g illites, 10g carboxymethylcellulose calciums, 5g lignin
Alcohol ether carboxylate, 20g water are uniformly mixed.
4th, take the compound of 10g load medicine diatomite particles and 15g containing diazinon to mix, through kneading, granulation, dry, screening
Obtain one layer of load medicine diatomite particle of the compound containing diazinon of cladding.
5th, coating agent is prepared：20g polyvinyl alcohol urea phosphate and 10g chlorinated paraffins are well mixed, 0.6g castors are subsequently adding
Numb acid calcium and 8g acetonitriles form coating agent after being sufficiently mixed.
6th, coating：Will carry medicine diatomite particle be placed in fluid bed blow out fluidized state, preheated at 80 DEG C, use delivery pump
Coating agent is delivered at the nozzle of atomising device, and is sprayed on the load medicine diatomite particle in fluidized state, atomization pressure
Power is 0.5Mpa, and the flow control of coating agent conveying makes one layer of compound containing diazinon of coating agent and cladding in 1000mL/h
Load medicine diatomite particle be sufficiently mixed, uniform coating, the thickness control of coating in 0.3mm, through ventilating and cooling after, at 100 DEG C
At a temperature of dry, that is, obtain diazinon coated slow-release granule.
7th, with 10g diazinon coated slow-release granules as core, compounds of the 10g containing diazinon is added, through mediating, granulating,
To be coated with the compound containing diazinon core be placed in fluid bed blow out fluidized state, preheated at 60-80 DEG C, use delivery pump
Coating agent is delivered at the nozzle of atomising device, and sprays to the compound containing diazinon of being coated with fluidized state
On core, atomizing pressure is 0.3-0.5Mpa, and the flow of coating agent conveying controls in 500-1000mL/h, makes coating agent and be coated with
The slug particle of the compound containing diazinon is sufficiently mixed, uniform coating, and the thickness control of coating is cold through divulging information in 0.1-0.3mm
But after, dried at a temperature of 80-100 DEG C, that is, obtain diazinon coated slow-release granule.
8th, previous process is repeated 3 times.
Embodiment 6
A kind of preparation method of diazinon coated slow-release granule
1st, the suspension containing diazinon is prepared：By in 10g diazinons addition 67g water, then ultrasonic disperse, obtains containing two
The suspension of piperazine phosphorus.
2nd, prepare and carry medicine diatomite particle：First the dry diatomite particles of 35g are placed in closed container, pumping makes part
In being sealed after vacuum state, then by the suspension injection container containing diazinon, after maintaining 2h, open vacuum plant is sharp
The suspension of diazinon is fed into the hole of diatomite particle with the pressure difference in atmospheric pressure and vacuum plant, is passed through
After 16min, freeze-drying obtains carrying medicine diatomite particle.
3rd, the compound containing diazinon is prepared：By 22g diazinons, 36g montmorillonites, 9g carboxymethylcellulose calciums, 3g castor oil
Sour alkanolamide, 17g water is uniformly mixed.
4th, take the compound of 10g load medicine diatomite particles and 18g containing diazinon to mix, through kneading, granulation, dry, screening
Obtain one layer of load medicine diatomite particle of the compound containing diazinon of cladding.
5th, coating agent is prepared：18g polyvinyl acetals and 9g chlorinated paraffins are well mixed, 0.6g castor-oil plants are subsequently adding
Sour calcium and 7g acetonitriles form coating agent after being sufficiently mixed.
6th, coating：Will carry medicine diatomite particle be placed in fluid bed blow out fluidized state, preheated at 75 DEG C, use delivery pump
Coating agent is delivered at the nozzle of atomising device, and is sprayed on the load medicine diatomite particle in fluidized state, atomization pressure
Power is 0.4Mpa, and the flow of coating agent conveying controls in 900mL/h, makes coating agent and be coated with the core of the compound containing diazinon
Particle is sufficiently mixed, uniform coating, the thickness control of coating in 0.2mm, through ventilating and cooling after, at a temperature of 100 DEG C dry, i.e.,
Obtain diazinon coated slow-release granule.
7th, with 10g diazinon coated slow-release granules as core, compounds of the 10g containing diazinon is added, through mediating, granulating,
To be coated with the compound containing diazinon core be placed in fluid bed blow out fluidized state, preheated at 60-80 DEG C, use delivery pump
Coating agent is delivered at the nozzle of atomising device, and sprays to the compound containing diazinon of being coated with fluidized state
On core, atomizing pressure is 0.3-0.5Mpa, and the flow of coating agent conveying controls in 500-1000mL/h, makes coating agent and be coated with
The slug particle of the compound containing diazinon is sufficiently mixed, uniform coating, and the thickness control of coating is cold through divulging information in 0.1-0.3mm
But after, dried at a temperature of 80-100 DEG C, that is, obtain diazinon coated slow-release granule.
8th, previous process is repeated 5 times.
Contrast experiment：Diazinon active compound 10g is chosen, the diazinon coated slow-release granule comprising 10g diazinons is chosen and is existed
Contrast is discharged under conditions of same, diazinon active compound is directly release, in the absence of slow releasing function, and diazine P with wrapping film of the invention
Sustained-release granular formulation farm chemical release rate in 70 days reaches 94%, fully demonstrates its slow controlled release feature.As can be seen here, the present embodiment system
The characteristics of standby diazinon coated slow-release granule has slow controlled release.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of preparation method of diazinon coated slow-release granule, it is characterised in that：Mainly include the following steps that：
The suspension of step one, preparation containing diazinon：Diazinon is added to the water, then ultrasonic disperse, obtains containing diazinon
Suspension, diazinon：Water quality ratio=1：2-7；
Step 2, preparation carry medicine diatomite particle：By diazinon：Diatomite particle=1：3-6.8 mass ratioes, first by dry silicon
Diatomaceous earth particle is placed in closed container, and pumping is allowed to be sealed after vacuum state, then notes the suspension containing diazinon
Enter in container, after maintaining 2-3h, open vacuum plant, using the hanging diazinon of the pressure difference in atmospheric pressure and vacuum plant
Supernatant liquid is fed into the hole of diatomite particle, by after 10-20min, freeze-drying obtains carrying medicine diatomite particle；
Step 3, preparation coating agent：15-20 weight portions coated fertilizer and 6-10 weight portion coalescents are well mixed, then
0.3-0.6 weight portions stabilizer and 5-8 weight portion acetonitriles is added to form coating agent after being sufficiently mixed；
Step 4, coating：Medicine diatomite particle will be carried it will be placed in fluid bed and blow out fluidized state, will be preheated at 60-80 DEG C, with defeated
Send pump that coating agent is delivered at the nozzle of atomising device, and spray on the load medicine diatomite particle in fluidized state, mist
Change pressure is 0.3-0.5Mpa, and the flow of coating agent conveying is controlled in 500-1000mL/h, is made coating agent and is carried medicine diatomite
Grain be sufficiently mixed, uniform coating, the thickness control of coating in 0.1-0.3mm, through ventilating and cooling after, at a temperature of 80-100 DEG C dry
It is dry, that is, obtain diazinon coated slow-release granule.
2. the preparation method of a kind of diazinon coated slow-release granule according to claim 1, it is characterised in that：Described
One layer of compound containing diazinon is first coated before step 4 coating, is comprised the following steps that：
1) compound containing diazinon, is prepared：2-25 weight portion diazinons, 15-40 weight portion inserts, 5-10 weight portions are glued
Mixture, 1-5 parts surfactants, 10-20 weight portion water is uniformly mixed；
2), take carry medicine diatomite particle and the compound containing diazinon according to 1：1-3 mass ratioes mix, through mediating, granulating, do
Dry, screening obtains one layer of load medicine diatomite particle of the compound containing diazinon of cladding.
3. the preparation method of a kind of diazinon coated slow-release granule according to claim 2, it is characterised in that：Para-diazines
P with wrapping film sustained-release granular formulation carries out multilayer coating structure and coating, and detailed process is as follows：
1) the diazinon coated slow-release granule for, being obtained with the step 4 adds the compound containing diazinon, core as core：Contain
Compound mass ratio=1 of diazinon：1-3, through mediating, granulating, then uses coating agent coating again；
2), said process is repeated 2-6 times.
4. the preparation method of a kind of diazinon coated slow-release granule according to claim 3, it is characterised in that：The bag
Membrane material is selected from urea formaldehyde resin, polyterpene resin, polyvinyl alcohol urea phosphate, polyvinyl acetal, methylol ethylene urea tree
Any one in fat；The coalescents are selected from any one in sulfonated olefins, vulcanization paraffin, chlorinated paraffin or terpenol.
5. a kind of preparation method of the diazinon coated slow-release granule according to claim any one of 2-4, its feature exists
In：The inserts is one or more in pyrophillite, illite or montmorillonite.
6. a kind of diazinon coated slow-release granule according to claim 5, it is characterised in that：The surfactant choosing
Selfpolyoxyethylene sorbitan mono-oleic acid ester, lignosulfonates-epoxy propane copolymer, lignose alcohol ether carboxylate, castor-oil plant
One or more in oleic acid alkanolamide or ammonium methyl ricinolcic acid sulfate.
7. the preparation method of a kind of diazinon coated slow-release granule according to claim 6, it is characterised in that：It is described viscous
Mixture is one or more in polyvinyl alcohol, animal glue, carboxymethylcellulose calcium.
8. a kind of diazinon coated slow-release granule according to claim 7, it is characterised in that：The stabilizer is epoxy
One or more in soybean oil, calcium ricinoleate.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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