CN107258802A - A kind of water-soluble agricultural composite Nano bactericide and preparation method thereof - Google Patents
A kind of water-soluble agricultural composite Nano bactericide and preparation method thereof Download PDFInfo
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- CN107258802A CN107258802A CN201710668930.8A CN201710668930A CN107258802A CN 107258802 A CN107258802 A CN 107258802A CN 201710668930 A CN201710668930 A CN 201710668930A CN 107258802 A CN107258802 A CN 107258802A
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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
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
- A01N47/12—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing a —O—CO—N< group, or a thio analogue thereof, neither directly attached to a ring nor the nitrogen atom being a member of a heterocyclic ring
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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
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
- A01N37/46—N-acyl derivatives
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- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
The present invention relates to water-soluble agricultural composite Nano bactericide of one kind and preparation method thereof, the composite Nano bactericide contains component with water-soluble disinfectant use in agriculture by butyl polyacrylate matrix and constituted.The diameter of the composite Nano bactericide particle is 100~500 nanometers, and Potential distribution is 50~20mV.The water-soluble agricultural composite Nano bactericide of the present invention is stable and easy to preserve, and the service efficiency to Development of Novel containing water-soluble agricultural bactericidal agent formulation, raising bactericide has very important significance.
Description
【Technical field】
The invention belongs to nanometer material science and biochemical field.More particularly it relates to a kind of water-soluble agriculture
Composite Nano bactericide is used, the preparation method of the water-soluble agricultural composite Nano bactericide is further related to.
【Background technology】
Bactericide is that a class is used to prevent and treat the agricultural chemicals for causing plant disease by various pathogenic microorganisms, is typically meant antifungal
Agent.In the world, bactericide is typically as the general name for preventing and treating all kinds of pathogenic microorganism medicaments.According to investigations, the whole world is to plant
Harmful pathogenic microorganism (fungi, strong bacterium, rickettsia, mycoplasma, virus, algae etc.) has more than 80,000 kinds.Plant disease
Agricultural is brought about great losses, thus global crops reduce about 500,000,000 tons of yield every year on average.
Water-soluble antiseptic agent is important part in bactericide, and this kind of agricultural chemicals biggest advantage is using very square
Just, directly it is watered dilution to can be used, without missible oil, wettable powder or pulvis etc. is made.However, their easily light
According to the influence of a variety of environment such as, microbial degradation and leaching and non-ambient factor so as to cause a large amount of losses, only a small amount of agricultural chemicals
Crop position can be reached.Therefore, this kind of agricultural chemicals all has that such as utilization rate is low, active ingredient rate of release fast, drug effect
Duration is short, it is serious to soil dye the problems such as.What is more important, this kind of water soluble pesticide easily flows with rain drop erosion
Lose, serious threat is constituted safely to DRINKING WATER.Therefore, how it is actually active improve ground agricultural chemicals utilization rate, be current agriculture
The problem of medicine field needs to solve in a hurry.
Nanometer technology provides a kind of new method to solve the problem of this kind of agricultural chemicals is present.Nano particle diameter typically exists
Between 10-1000 nanometers, nano particle diameter is smaller and specific surface area increases plus the uptake and adhesion amount of active ingredient, and
It can reduce because the active ingredient degraded that illumination and oxidation are caused.Therefore in recent years nanometer technology in pesticide field application
Research it is more and more.Since 21 century, it has been applied on nanometer technology in terms of plant protection and fertilizer as important research
Focus.
【The content of the invention】
[technical problem to be solved]
It is an object of the invention to provide the water-soluble agricultural composite Nano bactericide of one kind.
It is a further object to provide the preparation method of the water-soluble agricultural composite Nano bactericide.
[technical scheme]
The present invention is achieved through the following technical solutions.
The present invention relates to the water-soluble agricultural composite Nano bactericide of one kind.
Described water-soluble agricultural composite Nano bactericide is selected from first by butyl polyacrylate matrix with one or more
The water-soluble disinfectant use in agriculture of white spirit, Metalaxyl-M or propamocarb contains component and compares 1.0 according to weight：0.05~10.0
Composition.
A preferred embodiment of the invention, described composite Nano bactericide is by butyl polyacrylate matrix
Component, which is contained, with water-soluble disinfectant use in agriculture according to weight compares 1.0：0.5~8.0 composition.
According to another preferred embodiment of the present invention, described composite Nano bactericide is by butyl polyacrylate base
Matter contains component with water-soluble disinfectant use in agriculture and compares 1.0 according to weight：1.5~8.0 compositions.
According to another preferred embodiment of the present invention, the diameter of described composite Nano bactericide particle is 100~
500 nanometers, Potential distribution is -50~-20mV.
The invention further relates to the preparation method of the water-soluble agricultural composite Nano bactericide.
The step of preparation method, is as follows：
A, addition disinfectant use in agriculture
According to disinfectant use in agriculture in gram with counting the ratio of the stabilizer aqueous solution as 1 using milliliter：8~12, water solubility is agricultural
Bactericide is added to concentration in 0.2~0.8% glucan stabilizer aqueous solution by weight, to stir to clarify, reuse salt
Aqueous acid adjusts its pH to 2.0~3.0, obtains a kind of mixture solution；Described water-soluble disinfectant use in agriculture is a kind of
Or a variety of disinfectant use in agriculture selected from metalaxyl, Metalaxyl-M or propamocarb；
B, addition Butyl Acrylate Monomer
According to the ratio 1.0 of Butyl Acrylate Monomer and disinfectant use in agriculture in gram in terms of milliliter：0.05~10.0, toward step
Butyl Acrylate Monomer is added in the mixture solution that A is obtained, 1~16h is stirred at room temperature, diluted sodium hydroxide solution is added whole
Only react；
C, separation
Allow the reaction solution of step B terminating reactions to stand at room temperature, centrifuge, obtained supernatant is discarded, obtained
Sediment pure water, vortex oscillation, repeated centrifugation separation, obtain described water-soluble agricultural composite Nano bactericide.
According to another preferred embodiment of the present invention, the concentration of the aqueous hydrochloric acid solution is by weight 1~10%；
The concentration of the diluted sodium hydroxide solution is by weight 10~15%.
According to the present invention another preferred embodiment, in stepb, in terms of milliliter Butyl Acrylate Monomer with gram
The ratio for counting disinfectant use in agriculture is 1.0：0.5~8.0.
According to another preferred embodiment of the present invention, in step C, the reaction solution of step B terminating reactions is in room temperature
0.5~1.5h of lower standing.
According to the present invention another preferred embodiment, in step C, during centrifugation centrifuge speed 6000~
25~60min is centrifuged under conditions of 15000rpm.
According to another preferred embodiment of the present invention, in step C, obtained sediment is according to sediment and pure water
Weight compares 1：2~4 use pure water 2~4 times.
The present invention is described in more detail below.
The present invention relates to the water-soluble agricultural composite Nano bactericide of one kind.
Described water-soluble agricultural composite Nano bactericide is selected from first by butyl polyacrylate matrix with one or more
The water-soluble disinfectant use in agriculture of white spirit, Metalaxyl-M or propamocarb contains component and compares 1.0 according to weight：0.05~10.0
Composition.
Polyacrylate Nano-Particles have molecular flexibility height, stability is good, preparation technology is simple, particle diameter distribution is equal
Even, drugloading rate is high, nontoxic, without environmental hazard the features such as, be widely used in the technical fields such as medical and health, leather technology.This
It is the product sold in the market to invent the butyl polyacrylate used.
The chemical name of metalaxyl is D, L-N- (2,6- 3,5-dimethylphenyl)-N- (2- methoxyl groups acetyl) methyl lactamine,
It is micro- to have volatility, it is relatively stable under neutral and solutions of weak acidity, meet alkali and easily decompose, there is protection, treatment and interior suction etc. to disease
Bactericidal action, resistance of rainwater washing against, 10~14 days lasting periods.
The chemical name of Metalaxyl-M is N- (2,6- xylyl)-N- (Methoxyacetyl)-D- alanine methyl esters, right
Pseudoperonospora cubensis, phytophthora germ, the vegetables caused by rotten mildew fungus, fruit tree, tobacco, oil plant, cotton, the crop disease such as grain has height
Effect.
Propamocarb chemical name is N- (3- (dimethylamino) propyl group) carbamic acid propyl ester hydrochloride, is interior suction
Property bactericide, for preventing and treating cabbage downy mildew, radish root tumefacting disease, radish black root, cabbage white blister, tomato soil borne disease.
Metalaxyl, Metalaxyl-M or propamocarb that the present invention is used all are the product sold in the market, example
Metalaxyl, Metalaxyl-M and the propamocarb for such as being produced and being sold by Zhejiang Heben Science ＆ Technology Co., Ltd..
In the present invention, when butyl polyacrylate matrix content is 1.0, if water-soluble disinfectant use in agriculture contains component and contained
Amount is less than 0.05, then makes acrylate/nano grain parcel amount not enough；If water-soluble disinfectant use in agriculture contains constituent content and is higher than
10.0, then most water-soluble disinfectant use in agriculture can not be wrapped in the sodium polyacrylate grain of rice.Therefore, water solubility is agricultural kills
It is 1.0 that microbial inoculum, which contains constituent content,：0.05~10.0 is rational.
Preferably, described composite Nano bactericide is to be contained by butyl polyacrylate matrix with water-soluble disinfectant use in agriculture
Component compares 1.0 according to weight：0.5~8.0 composition.
It is highly preferred that described composite Nano bactericide is by butyl polyacrylate matrix and water-soluble disinfectant use in agriculture bag
Carry component and compare 1.0 according to weight：1.5~8.0 compositions.
In the present invention, determined using laser nano particle size analyzer conventional detection, described composite Nano bactericide particle
Diameter is 100~500 nanometers, and Potential distribution is -50~-20mV.
The invention further relates to the preparation method of the water-soluble agricultural composite Nano bactericide.
The step of preparation method, is as follows：
A, addition disinfectant use in agriculture
According to disinfectant use in agriculture in gram with counting the ratio of the stabilizer aqueous solution as 1 using milliliter：8~12, water solubility is agricultural
Bactericide is added to concentration in 0.2~0.8% glucan stabilizer aqueous solution by weight, to stir to clarify, reuse salt
Aqueous acid adjusts its pH to 2.0~3.0, obtains a kind of mixture solution；
Described water-soluble disinfectant use in agriculture is one or more selected from metalaxyl, Metalaxyl-M or propamocarb
Disinfectant use in agriculture, they have been described previously, and will not be repeated here.
The basic role of glucan is to allow newly-generated nano-particle to be stably dispersed in system.In the present invention, if
The concentration of the glucan stabilizer aqueous solution is less than 0.2%, and nanoparticle can easily reunite；If the glucan stabilizer aqueous solution is dense
Degree is higher than 0.8%, then the nanoparticle that can be generated is too small, is not readily separated；Therefore, the concentration of the glucan stabilizer aqueous solution is 0.2
~0.8% is appropriate.
In the present invention, if the pH value of the agricultural bactericidal agent solution containing glucan stabilizer is less than 2.0, it can not give birth to
Into nanoparticle；If the pH value of the agricultural bactericidal agent solution containing glucan stabilizer is more than 3.0, the nanometer particle size generated point
Cloth is excessive；Therefore, the pH value of the agricultural bactericidal agent solution containing glucan stabilizer is feasible for 2.0~3.0.
In this step, the concentration of the aqueous hydrochloric acid solution is not particularly critical, is typically by weight 1~10%, when
So, aqueous hydrochloric acid solution concentration is higher or lower is all possible.
B, addition Butyl Acrylate Monomer
According to the ratio 1.0 of Butyl Acrylate Monomer and disinfectant use in agriculture in gram in terms of milliliter：0.05~10.0, toward step
Butyl Acrylate Monomer is added in the mixture solution that A is obtained, 1~16h is stirred at room temperature, diluted sodium hydroxide solution is added whole
Only react；
Preferably, the ratio of Butyl Acrylate Monomer and disinfectant use in agriculture in gram is 1.0 in terms of milliliter：0.5~8.0.
In the present invention, it is all inadvisable that the reaction solution mixing time of addition Butyl Acrylate Monomer, which exceedes the scope,
Because the time can discharge the disinfectant use in agriculture being wrapped in nanoparticle too long.
In the present invention, the concentration of the diluted sodium hydroxide solution is by weight 10~15%.
C, separation
Allow the reaction solution of step B terminating reactions to stand at room temperature, centrifuge, obtained supernatant is discarded, obtained
Sediment pure water, vortex oscillation, repeated centrifugation separation, obtain described water-soluble agricultural composite Nano bactericide.
In this step, the reaction solution of step B terminating reactions stands 0.5~1.5h at room temperature.
In this step, it is centrifuged during centrifugation under conditions of 6000~15000rpm of centrifuge speed
25~60min.Obtained sediment is according to sediment and pure water weight ratio 1：2~4 use pure water 2~4 times.
Vortex vibration is the liquid in container is produced vortex using instrument eccentric rotary, so that reaching makes solution fully mix
The purpose of conjunction.Vortex oscillator is the instrument for producing vortex vibration, and the vortex oscillator that the present invention is used is to sell in the market
The product sold, the product for example sold by IKA companies with trade name vortex oscillator.
The centrifugal separator that the present invention is used is the product sold in the market, such as by Hunan Hunan instrument Laboratory Instruments
The centrifuge that development corporation, Ltd. is sold with trade name supercentrifuge.
In the present invention, using laser nano particle size analyzer, SEM and transmission electron microscope to the present invention
The water-soluble agricultural composite Nano bactericide that preparation method is prepared has carried out the analysis of corresponding conventional detection, its result referring to
Accompanying drawing 1-3.
Step of preparation process of the present invention is simple, mild condition, technique environmental protection, less energy consumption, three wastes and radiate with making an uproar
Sound etc. pollutes, and Separation ＆ Purification technological operation is easy, and the water-soluble agricultural composite Nano bactericide of gained is stable and easy to preserve.
[beneficial effect]
The beneficial effects of the invention are as follows：Preparation method step of the present invention is simple, mild condition, technique environmental protection, energy consumption
Less, three wastes and radiation and noise etc. are polluted, and Separation ＆ Purification technological operation is easy, and the water-soluble agricultural composite Nano of the present invention is killed
Microbial inoculum be stable and easy to preserve, to Development of Novel containing water-soluble agricultural bactericidal agent formulation, improve bactericide service efficiency have it is non-
Often important meaning.
【Brief description of the drawings】
Fig. 1 is the water-soluble agricultural composite Nano bactericide size distribution of the present invention and current potential phenogram；
Fig. 2 is the water-soluble agricultural composite Nano bactericide scanning electron microscope diagram of the present invention；
Fig. 3 is the water-soluble agricultural composite Nano bactericide transmission electron microscope figure of the present invention；
In figure：
Prepared by a- embodiments 1MetalaxylComposite Nano bactericide；
Metalaxyl-M composite Nano bactericide prepared by b- embodiments 2；
Propamocarb composite Nano bactericide prepared by c- embodiments 3；
Metalaxyl/propamocarb composite Nano bactericide prepared by d- embodiments 4.
【Embodiment】
The present invention is will be better understood that by following embodiments.
Embodiment 1：Prepare metalaxyl composite Nano bactericide
The implementation steps of the embodiment are as follows：
A, addition disinfectant use in agriculture
According to disinfectant use in agriculture in gram with counting the ratio of the stabilizer aqueous solution as 1 using milliliter：8, the water-soluble agriculture of metalaxyl
It is added to concentration with bactericide in the 0.6% glucan stabilizer aqueous solution by weight, to stir to clarify, reusing concentration is
10% aqueous hydrochloric acid solution adjusts its pH to 2.3 by weight, obtains a kind of mixture solution；
B, addition Butyl Acrylate Monomer
According to the ratio 1.0 of Butyl Acrylate Monomer and disinfectant use in agriculture in gram in terms of milliliter：0.05, obtained toward step A
Mixture solution in add Butyl Acrylate Monomer, be stirred at room temperature 12h, it is by weight 10% dilute hydrogen to add concentration
Sodium hydroxide solution terminating reaction；
C, separation
Allow the reaction solution of step B terminating reactions to stand 0.5h at room temperature, under conditions of centrifuge speed 6000rpm from
The heart separates 60min, and obtained supernatant is discarded, and obtained sediment is according to sediment and pure water weight ratio 1：3 use pure water 3
Secondary, vortex oscillation, repeated centrifugation separation, obtains described water-soluble agricultural composite Nano bactericide.
Accompanying drawing 1a is listed in using laser nano particle size analyzer testing result；Particle diameter distribution is 456.6 ± 50.5nm, Potential Distributing
For -45.3 ± 3.3mV.
SEM is with tem study result respectively referring to accompanying drawing 2a and accompanying drawing 3a.
Embodiment 2：Prepare Metalaxyl-M composite Nano bactericide
The implementation steps of the embodiment are as follows：
A, addition disinfectant use in agriculture
According to disinfectant use in agriculture in gram with counting the ratio of the stabilizer aqueous solution as 1 using milliliter：12, Metalaxyl-M is water-soluble
Disinfectant use in agriculture is added to concentration in the 0.2% glucan stabilizer aqueous solution by weight, to stir to clarify, reuse concentration
Its pH is adjusted to 2.0 for by weight 5% aqueous hydrochloric acid solution, a kind of mixture solution is obtained；
B, addition Butyl Acrylate Monomer
According to the ratio 1.0 of Butyl Acrylate Monomer and disinfectant use in agriculture in gram in terms of milliliter：10.0, obtained toward step A
Mixture solution in add Butyl Acrylate Monomer, be stirred at room temperature 1h, it is by weight 12% dilute hydrogen to add concentration
Sodium hydroxide solution terminating reaction；
C, separation
The reaction solution of step B terminating reactions is allowed to stand 1.5h at room temperature, under conditions of centrifuge speed 12000rpm
30min is centrifuged, obtained supernatant is discarded, and obtained sediment is according to sediment and pure water weight ratio 1：2 are washed with pure water
2 times, vortex oscillation are washed, repeated centrifugation separation obtains described water-soluble agricultural composite Nano bactericide.
Accompanying drawing 1b is listed in using laser nano particle size analyzer testing result；Particle diameter distribution is 152.8 ± 53.6nm, Potential Distributing
For -33.2 ± 3.3mV.
SEM is with tem study result respectively referring to accompanying drawing 2b and accompanying drawing 3b.
Embodiment 3：Prepare propamocarb composite Nano bactericide
The implementation steps of the embodiment are as follows：
A, addition disinfectant use in agriculture
According to disinfectant use in agriculture in gram with counting the ratio of the stabilizer aqueous solution as 1 using milliliter：9, propamocarb water
Dissolubility disinfectant use in agriculture is added to concentration in the 0.8% glucan stabilizer aqueous solution by weight, to stir to clarify, reuse
Concentration is adjusted its pH to 2.6 for by weight 1% aqueous hydrochloric acid solution, obtains a kind of mixture solution；
B, addition Butyl Acrylate Monomer
According to the ratio 1.0 of Butyl Acrylate Monomer and disinfectant use in agriculture in gram in terms of milliliter：0.5, obtained toward step A
Butyl Acrylate Monomer is added in mixture solution, 5h is stirred at room temperature, it is by weight 15% dilute hydrogen-oxygen to add concentration
Change sodium solution terminating reaction；
C, separation
The reaction solution of step B terminating reactions is allowed to stand 1.0h at room temperature, under conditions of centrifuge speed 15000rpm
25min is centrifuged, obtained supernatant is discarded, and obtained sediment is according to sediment and pure water weight ratio 1：3 are washed with pure water
4 times, vortex oscillation are washed, repeated centrifugation separation obtains described water-soluble agricultural composite Nano bactericide.
Accompanying drawing 1c is listed in using laser nano particle size analyzer testing result；Particle diameter distribution is 200.6 ± 60.3nm, Potential Distributing
For -21.0 ± 3.7mV.
SEM is with tem study result respectively referring to accompanying drawing 2c and accompanying drawing 3c.
Embodiment 4：Prepare metalaxyl/propamocarb composite Nano bactericide
The implementation steps of the embodiment are as follows：
A, addition disinfectant use in agriculture
According to disinfectant use in agriculture in gram with counting the ratio of the stabilizer aqueous solution as 1 using milliliter：10, metalaxyl and Propamocarb
(weight compares 1 to hydrochloride:1) it is the 0.4% glucan stabilizer aqueous solution by weight that water-soluble disinfectant use in agriculture, which is added to concentration,
In, stir to clarify, the aqueous hydrochloric acid solution for reusing concentration for by weight 2% adjusts its pH to 3.0, obtains a kind of mixing
Thing solution；
B, addition Butyl Acrylate Monomer
According to the ratio 1.0 of Butyl Acrylate Monomer and disinfectant use in agriculture in gram in terms of milliliter：8.0, obtained toward step A
Butyl Acrylate Monomer is added in mixture solution, 16h is stirred at room temperature, it is by weight 14% dilute hydrogen-oxygen to add concentration
Change sodium solution terminating reaction；
C, separation
The reaction solution of step B terminating reactions is allowed to stand 0.8h at room temperature, under conditions of centrifuge speed 12000rpm
35min is centrifuged, obtained supernatant is discarded, and obtained sediment is according to sediment and pure water weight ratio 1：4 are washed with pure water
3 times, vortex oscillation are washed, repeated centrifugation separation obtains described water-soluble agricultural composite Nano bactericide.
Accompanying drawing 1d is listed in using laser nano particle size analyzer testing result；Particle diameter distribution is 456.6 ± 50.5nm, Potential Distributing
For -45.3 ± 3.3mV.
SEM is with tem study result respectively referring to accompanying drawing 2d and accompanying drawing 3d.
Claims (10)
1. a kind of water-soluble agricultural composite Nano bactericide, it is characterised in that described composite Nano bactericide is by polyacrylic acid
Butyl ester matrix contains group with one or more water-soluble disinfectant use in agriculture selected from metalaxyl, Metalaxyl-M or propamocarb
Divide and compare 1.0 according to weight：0.05~10.0 composition.
2. composite Nano bactericide according to claim 1, it is characterised in that described composite Nano bactericide is by gathering
Butyl acrylate matrix contains component with water-soluble disinfectant use in agriculture and compares 1.0 according to weight：0.5~8.0 composition.
3. composite Nano bactericide according to claim 1, it is characterised in that described composite Nano bactericide is by gathering
Butyl acrylate matrix contains component with water-soluble disinfectant use in agriculture and compares 1.0 according to weight：1.5~8.0 compositions.
4. composite Nano bactericide according to claim 1, it is characterised in that described composite Nano bactericide particle
Diameter is 100~500 nanometers, and Potential distribution is -50~-20mV.
5. the preparation method of water-soluble agricultural composite Nano bactericide according to claim 1, it is characterised in that the preparation side
The step of method, is as follows：
A, addition disinfectant use in agriculture
According to disinfectant use in agriculture in gram with counting the ratio of the stabilizer aqueous solution as 1 using milliliter：8~12, water-soluble agricultural bactericidal
Agent is added to concentration in 0.2~0.8% glucan stabilizer aqueous solution by weight, to stir to clarify, reuse hydrochloric acid water
Solution adjusts its pH to 2.0~3.0, obtains a kind of mixture solution；Described water-soluble disinfectant use in agriculture is a kind of or many
Plant the disinfectant use in agriculture selected from metalaxyl, Metalaxyl-M or propamocarb；
B, addition Butyl Acrylate Monomer
According to the ratio 1.0 of Butyl Acrylate Monomer and disinfectant use in agriculture in gram in terms of milliliter：0.05~10.0, obtained toward step A
To mixture solution in add Butyl Acrylate Monomer, be stirred at room temperature 1~16h, add diluted sodium hydroxide solution and terminate
Reaction；
C, separation
Allow the reaction solution of step B terminating reactions to stand at room temperature, centrifuge, obtained supernatant is discarded, obtained precipitation
Thing pure water, vortex oscillation, repeated centrifugation separation, obtain described water-soluble agricultural composite Nano bactericide.
6. preparation method according to claim 5, it is characterised in that the concentration of the aqueous hydrochloric acid solution be by weight 1~
10%；The concentration of the diluted sodium hydroxide solution is by weight 10~15%.
7. preparation method according to claim 5, it is characterised in that in stepb, the Butyl Acrylate Monomer in terms of milliliter
Ratio with disinfectant use in agriculture in gram is 1.0：0.5~8.0.
8. preparation method according to claim 5, it is characterised in that in step C, the reaction solution of step B terminating reactions exists
0.5~1.5h is stood at room temperature.
9. composite Nano bactericide according to claim 5, it is characterised in that in step C, in centrifugation during centrifugation
25~60min is centrifuged under conditions of 6000~15000rpm of machine rotating speed.
10. composite Nano bactericide according to claim 5, it is characterised in that in step C, obtained sediment according to
Sediment and pure water weight ratio 1：2~4 use pure water 2~4 times.
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Application publication date: 20171020 |