A kind of Environmentally-friepesticidal pesticidal aerosol and preparation method thereof
Technical field
The present invention relates to hygienic dissipation technical fields, and in particular to a kind of Environmentally-friepesticidal pesticidal aerosol and preparation method thereof.
Background technique
Currently, the aerosol for domestic sanitary desinsection mainly has 3 seed types, respectively oil type aerosol, alcohol fundamental mode
Aerosol and aqua type aerosol.Wherein, in the insect aerosol of China's production, 90% the above are oil type or alcohol fundamental modes to produce
Product, content at least contain 80% or more volatile organic matter, and VOC emission amount is big, are unfavorable for environmental protection, and high production cost,
There are inflammable and explosive hidden danger, are unfavorable for safety.
Water-based type insect aerosol is the emulsion of a kind of W/O or O/W, environmentally protective, meets the environmental protection of current energy-saving and emission-reduction
Theory is the hot spot of current research.Currently, the research and development of water-based type insect aerosol mainly face two big technical problems: first, water
The insecticidal effect of fundamental mode insect aerosol and alcohol basic product is significantly lower than oil type product, this is because insect body surface exists
Grease wax layer, oil based solvent facilitates the body surface of insecticide fast strikethrough insect, and second alcohol and water is since polarity is larger and insect
Hydrophobicity surface layer intermiscibility it is poor, and evaporation rate is fast, short in the residence time of pest body surface, is unfavorable for rising for insect aerosol
Effect.Second, the use of water-based type insect aerosol made from conventional emulsifier is unstable emulsion, can be layered after being long placed in, is used
Before have to rock aerosol can, cannot as oil type product can Direct spraying, it is inconvenient for use, and be limited in its preparation process
The type of propellant, the addition of certain propellants may destroy emulsion balance, lead to the phenomenon that flocculation, muddiness, layering occur,
Atomizing nozzle is easily blocked when use.Furthermore the addition of conventional emulsifier can be such that the viscosity of product rises, and lead to the atomizing particle diameter sprayed
Bigger than normal, the sedimentation of droplet is very fast, and in space, the residence time is shorter, cannot give full play to drug effect.
The Chinese patent application of 109258680 A of Publication No. CN discloses a kind of water base aerosol of homogeneous phase transparent, this is killed
Worm aerosol contains 1-2 parts of dtetramethrin, 0.3-1 parts of d-phenothrin, 1-2 parts of Permethrin, 1-3 parts of synergist, helps
0.5-2 parts of solvent, 0.5-2 parts of essence, 0.5-3 parts of corrosion inhibiter, 50-150 parts of alcoholic solvent and 50-150 parts of deionized water.This is spraying
The phenomenon that agent is a kind of surfactant-free microemulsion (SFMEs), efficiently solves emulsion creaming, but it is limited to the kind of propellant
Class uses the third butane that can cause system layering as propellant, and there are certain limitations.
Summary of the invention
The object of the present invention is to provide a kind of Environmentally-friepesticidal pesticidal aerosols and preparation method thereof.The Environmentally-friepesticidal pesticidal aerosol
It is a kind of thermodynamically stable homogeneous O/W type aqueous microemulsion system, partial size is nanoscale, is long placed in not stratified, and stability is good, can
Direct spraying and need not rock, the speed effect of killing is all had to mosquito, fly, cockroach.
The present invention is achieved by the following technical programs:
A kind of Environmentally-friepesticidal pesticidal aerosol, which is characterized in that the component comprising following mass percent meter:
The synergist is one of Butacide, Octacide 264, propyl isome.
It is preferred that the Butacide is oxidation of piperonyl butoxide, Octachlorodipropyl Ether or 3,4- methylene-dioxy -6- n-propyl
Benzyl normal-butyl tirethylene glycol ether;The Octacide 264 is N- (2- ethylhexyl) two rings (2.2.1) hept- 5- alkene -2,3- two
Two ring (2.2.2) hept- 5- alkene -2,3- dicarboximide of carboxylic acid imide or N- (2- ethylhexyl) -1- isopropyl-4-methyl;Institute
The propyl isome stated is isobornyl thiocyanoacetate or butyl acetylamino ethyl propionate.
The plants essential oil in lemon, bergamot oil, Peppermint essential oil, lavender oil, flores aurantii essential oil one
Kind.
The surfactant is mannosylerythritol lipid and surfactant peptides with the mass ratio group of 1:0.01~0.1
At.
It is preferred that the surfactant is mannosylerythritol lipid and surfactant peptides with the matter of 1:0.01~0.05
Amount is than composition.
It is further preferred that the surfactant is mannosylerythritol lipid and surfactant peptides with the mass ratio of 1:0.02
Composition.
The propellant is selected from one of dimethyl ether, propane, normal butane, iso-butane, pentane, the third butane.
The present invention also provides a kind of preparation methods of above-mentioned Environmentally-friepesticidal pesticidal aerosol comprising following steps:
S1: by natural pyrethroid element, synergist, plants essential oil, two caprylic/capric ester of neopentyl glycol, surfactant
It is mixed in proportion with water, is stirred well to clarification, obtains medical fluid;
S2: medical fluid is filling in aerosol container, insert valve sealing;
S3: injecting propellant into the aerosol container under high pressure, and aerosol lid in pressure obtains environment protection type insecticidal aerosol
Agent.
The present invention in experiments it is found that, use alkyl phenol polyoxyethylene ether (emulsifier op-10), polyoxyethylene sorbitan
Water-base pesticide aerosols, which are made, in the surfactants such as alcohol monoleate (Tween 80) can form homogeneous O/W emulsion system, still
After standing a period of time, solution is layered, and needs to rock aerosol when reusing, and by above-mentioned emulsification
The droplet that aerosol made from agent is formed is larger, and in space, the residence time is shorter, is unfavorable for insecticidal constituent and winged insect class pest
Contact, substantially reduces drug effect, while being easy to spume when spraying using the aerosol of such emulsifier, and atomizing effect is poor,
It is unfavorable for the long-range injection of spray.Further, in order to overcome above-mentioned defect, the present inventor attempts addition alcohols and helps surface
Activating agent normal propyl alcohol, as a result, it has been found that, although normal propyl alcohol and emulsifier op-10 or Tween 80, which share, can inhibit aerosol solution body
System's layering, but the viscosity of aerosol solution is relatively large, and the mist droplet particle size of formation is larger, and droplet sedimentation is very fast, stops in space
Time is shorter, and spout is still easy to spume when being sprayed, and the foaming phenomena of system is not inhibited.
For this purpose, the present inventor attempts to use Glycolipids Biosurfactantss-mannosylerythritol lipid as emulsification
Agent, it is found that since the HLB value of mannosylerythritol lipid is 8.7 or so, there is a degree of lipophilicity, can avoid making
It is easy tacky phenomenon with solution system in the case where the high surfactant of the hydrophilies such as emulsifier op-10, Tween 80, but same
When it has also been found that be used alone mannosylerythritol lipid be difficult to form O/W type emulsification composition.Unexpectedly, the present inventor
By largely testing discovery in the present invention, by using on the basis of the mannosylerythritol lipid as emulsifier
A small amount of surfactant peptides (Surfactin) are used as assistant for emulsifying agent, available stable O/W type aqueous microemulsion system, institute
The Surfactin stated by containing 7 amino acid residues peptide ring with contain 13~16 carbon beta-hydroxy fatty acid with lactone bond in conjunction with
It forms, amino acid is arranged as Leu-Leu-Asp-Val-Leu-Leu-Glu, the pendant hydrophilic performance and beta-hydroxy of amino acid
The hydrophobicity of fatty acid competes so that being formed in water/oil interface and mannosylerythritol lipid, with mannosylerythritol lipid point
Mutual repulsion between son, the instantaneous negative surface tension formed on interface, is conducive to the formation of microemulsion.O/W type of the invention
Aqueous microemulsion system partial size is within the scope of 10~100nm, appearance transparent, is long placed in not stratified, and stability is good, can Direct spraying and
It need not rock, and the viscosity of lotion is small, the mist droplet particle size of formation is small, and in space, the residence time is long, and it is not easy to foaming, it is easy mist
Change, is conducive to long-range injection, to winged insect class pest such as mosquito, fly, and the class pest such as cockroach etc. that creeps all has the speed effect of killing,
Insecticidal effect and oil-based products are close, and unexpected technical results have been achieved.
Natural pyrethroid element is the active constituent with insecticidal effect of the separating and extracting from pyrethrum flowers in the present invention,
Containing six kinds of insect killing substances, has many advantages, such as that broad-spectrum high efficacy, environment-friendly and low-toxicity and insect are not likely to produce drug resistance, be internationally recognized
The insecticide of safety.Natural pyrethroid element and synergist are shared, the insecticidal effect of insect aerosol can be significantly improved.Into one
Step addition has the plants essential oil of pest avoidance effect, the tagging, walk quickly and keep away of insect aerosol, sterilization effect not only can be improved, also
It is adjustable the fragrance of aerosol, makes aerosol that there is the natural champignon of plant.
The two caprylic/capric ester of neopentyl glycol, name of product: Liponate NPGC-2 is neutral nonionic type liquid
Body, low viscosity, colorless and odorless is nontoxic, is the branch grease of cross structure, gas permeability pole good with insect surfaces wax compatibility
It is good, there is splendid adsorption property, can promote the absorption of active insecticidal components, significantly improve the desinsection of water-based type insect aerosol
Effect.
Compared with prior art, the invention has the following advantages:
(1) Environmentally-friepesticidal pesticidal aerosol of the invention is a kind of thermodynamically stable homogeneous O/W type aqueous microemulsion system, long
Set not stratified, stability is good, can Direct spraying and need not rock, it is easy to use, and the mist droplet particle size formed is small, stops in space
Stay the time long, it is not easy to foaming, it is easy atomization, is conducive to long-range injection, to winged insect class pest such as mosquito, fly and reptiles evil
Worm such as cockroach etc. all has the speed effect of killing, and insecticidal effect and oil-based products are close.
(2) Environmentally-friepesticidal pesticidal aerosol preparation process of the invention is simple, is not only restricted to the type of propellant, can be formed
Bright homogeneous microemulsion system, is easy to be mass produced.
Specific embodiment
The following examples are further illustrations of the invention, rather than limiting the invention.Match in following embodiments
The component of side is unless otherwise noted conventional commercial product.
Embodiment 1
A kind of Environmentally-friepesticidal pesticidal aerosol, the component comprising following mass percent meter:
Natural pyrethroid element 1%, oxidation of piperonyl butoxide 0.5%, lemon 1.5%, two octanoic acids of the neopentyl glycol/last of the ten Heavenly stems
Acid esters 2%, mannosylerythritol lipid 0.98%, surfactant peptides 0.02%, dimethyl ether 40% and water 54%.
Preparation step:
S1: by natural pyrethroid element, oxidation of piperonyl butoxide, lemon, two caprylic/capric ester of neopentyl glycol, sweet
Reveal sugared erythrose alcohol ester, surfactant peptides and water to mix in proportion, is stirred well to clarification, obtains medical fluid;
S2: medical fluid is filling in aerosol container, insert valve sealing;
S3: injecting dimethyl ether into the aerosol container under high pressure, and aerosol lid in pressure obtains environment protection type insecticidal aerosol
Agent.
Embodiment 2
A kind of Environmentally-friepesticidal pesticidal aerosol, the component comprising following mass percent meter:
Natural pyrethroid element 1.5%, oxidation of piperonyl butoxide 0.3%, bergamot oil 1.2%, two octanoic acid of neopentyl glycol/
Decylate 1%, mannosylerythritol lipid 0.98%, surfactant peptides 0.02%, the third butane 35% and water 60%.
Preparation step reference implementation example 1.
Embodiment 3
A kind of Environmentally-friepesticidal pesticidal aerosol, the component comprising following mass percent meter:
Natural pyrethroid element 2%, oxidation of piperonyl butoxide 0.2%, flores aurantii essential oil 0.8%, two octanoic acids of the neopentyl glycol/last of the ten Heavenly stems
Acid esters 3%, mannosylerythritol lipid 0.98%, surfactant peptides 0.02%, normal butane 40% and water 53%.
Preparation step reference implementation example 1.
Embodiment 4
A kind of Environmentally-friepesticidal pesticidal aerosol, the component comprising following mass percent meter:
Natural pyrethroid element 0.5%, oxidation of piperonyl butoxide 0.6%, Peppermint essential oil 1.2%, two octanoic acid of neopentyl glycol/
Decylate 1%, mannosylerythritol lipid 0.67%, surfactant peptides 0.03%, iso-butane 45% and water 51%.
Preparation step reference implementation example 1.
Embodiment 5
A kind of Environmentally-friepesticidal pesticidal aerosol, the component comprising following mass percent meter:
Natural pyrethroid element 0.5%, oxidation of piperonyl butoxide 0.5%, bergamot oil 0.5%, two octanoic acid of neopentyl glycol/
Decylate 2%, mannosylerythritol lipid 0.48%, surfactant peptides 0.02%, the third butane 40% and water 56%.
Preparation step reference implementation example 1.
Embodiment 6
A kind of Environmentally-friepesticidal pesticidal aerosol, the component comprising following mass percent meter:
Natural pyrethroid element 1%, oxidation of piperonyl butoxide 0.6%, lavender oil 1.4%, two octanoic acids of the neopentyl glycol/last of the ten Heavenly stems
Acid esters 1%, mannosylerythritol lipid 0.98%, surfactant peptides 0.02%, dimethyl ether 45% and water 50%.
Preparation step reference implementation example 1.
Comparative example 1
A kind of Environmentally-friepesticidal pesticidal aerosol, the component comprising following mass percent meter:
Natural pyrethroid element 1%, oxidation of piperonyl butoxide 0.5%, lemon 1.5%, two octanoic acids of the neopentyl glycol/last of the ten Heavenly stems
Acid esters 2%, Tween 80 1%, dimethyl ether 40% and water 54%.
Preparation step reference implementation example 1.
Comparative example 2
A kind of Environmentally-friepesticidal pesticidal aerosol, the component comprising following mass percent meter:
Natural pyrethroid element 1%, oxidation of piperonyl butoxide 0.5%, lemon 1.5%, two octanoic acids of the neopentyl glycol/last of the ten Heavenly stems
Acid esters 2%, emulsifier op-10 1%, dimethyl ether 40% and water 54%.
Preparation step reference implementation example 1.
Comparative example 3
A kind of Environmentally-friepesticidal pesticidal aerosol, the component comprising following mass percent meter:
Natural pyrethroid element 1%, oxidation of piperonyl butoxide 0.5%, lemon 1.5%, two octanoic acids of the neopentyl glycol/last of the ten Heavenly stems
Acid esters 2%, Tween 80 1%, normal propyl alcohol 4%, dimethyl ether 40% and water 50%.
Preparation step reference implementation example 1.
Comparative example 4
A kind of Environmentally-friepesticidal pesticidal aerosol, the component comprising following mass percent meter:
Natural pyrethroid element 1%, oxidation of piperonyl butoxide 0.5%, lemon 1.5%, two octanoic acids of the neopentyl glycol/last of the ten Heavenly stems
Acid esters 2%, emulsifier op-10 1%, normal propyl alcohol 4%, dimethyl ether 40% and water 50%.
Preparation step reference implementation example 1.
Comparative example 5
A kind of Environmentally-friepesticidal pesticidal aerosol, the component comprising following mass percent meter:
Natural pyrethroid element 1%, oxidation of piperonyl butoxide 0.5%, lemon 1.5%, two octanoic acids of the neopentyl glycol/last of the ten Heavenly stems
Acid esters 2%, mannosylerythritol lipid 1%, dimethyl ether 40% and water 54%.
Preparation step reference implementation example 1.
Comparative example 6
A kind of Environmentally-friepesticidal pesticidal aerosol, the component comprising following mass percent meter:
Natural pyrethroid element 1%, oxidation of piperonyl butoxide 0.5%, lemon 1.5%, mannosylerythritol lipid
0.98%, surfactant peptides 0.02%, dimethyl ether 40% and water 56%.
Preparation step reference implementation example 1.
Test example one, physical and chemical stability detection
(1) room temperature stability is tested: respectively by Environmentally-friepesticidal pesticidal aerosol made from embodiment 1-6 and comparative example 1-6 (for side
Just observe, aerosol container is transparent glass container) it is stood for 24 hours in room temperature condition, whether observation aerosol is layered, and as a result sees
Table 1.
(2) thimble test: Environmentally-friepesticidal pesticidal aerosol made from embodiment 1-6 and comparative example 1-6 is placed in respectively
50 DEG C of hot environment is placed for 24 hours, and accelerated test is carried out, and whether observation aerosol is layered, and the results are shown in Table 1.
(3) mist droplet particle size variation detection: embodiment 1-6 and comparative example 1- are detected respectively using spraying laser particle size analyzer
Environmentally-friepesticidal pesticidal aerosol made from 6 before the test, be placed at room temperature for for 24 hours after, high temperature place after spray particle diameter variation, the results are shown in Table
2。
1 Detection of Stability result of table
Group |
It is stored at room temperature for 24 hours |
50 DEG C stand for 24 hours |
Embodiment 1 |
Without layering |
Without layering |
Embodiment 2 |
Without layering |
Without layering |
Embodiment 3 |
Without layering |
Without layering |
Embodiment 4 |
Without layering |
Without layering |
Embodiment 5 |
Without layering |
Without layering |
Embodiment 6 |
Without layering |
Without layering |
Comparative example 1 |
Layering |
Layering |
Comparative example 2 |
Layering |
Layering |
Comparative example 3 |
Without layering |
Layering |
Comparative example 4 |
Without layering |
Layering |
Comparative example 5 |
Layering |
Layering |
Comparative example 6 |
Without layering |
Without layering |
Table 1 shows that Environmentally-friepesticidal pesticidal aerosol made from embodiment 1-6 is placed for 24 hours at room temperature or transferred at 50 DEG C of high temperature
It sets for 24 hours, is in homogeneous phase transparent liquid without there is lamination.By comparative example 1-2 it is found that being made with Tween 80 or emulsifier op-10
For emulsifier, aerosol obtained is placed at ambient temperature or elevated temperature there is lamination, and solution system is unstable.By comparative example
3-4 adds normal propyl alcohol as assistant for emulsifying agent, aerosol obtained it is found that using Tween 80 or emulsifier op-10 as emulsifier
Agent is stable at room temperature, but non-refractory, is layered under high temperature.By comparative example 5 it is found that aerosol contains only emulsifier mannose
Erythrose alcohol ester is free of assistant for emulsifying agent surfactant peptides, and solution system is unstable at a room temperature and a high temperature, is layered, table
Bright exclusive use mannosylerythritol lipid is difficult to form stable O/W type emulsification system, and surfactant peptides are to improvement aerosol
The stability of solution plays a significant role, and sharing with mannosylerythritol lipid, which can promote, to form the stable water base micro emulsion of O/W type
Liquid system.By comparative example 6 it is found that two caprylic/capric ester of neopentyl glycol does not influence the stability of aerosol solution.
2 mist droplet particle size of table changes testing result
Table 2 shows that Environmentally-friepesticidal pesticidal aerosol made from embodiment 1-6 is placed for 24 hours at room temperature or transferred at 50 DEG C of high temperature
Set for 24 hours, droplet average grain diameter does not increase significantly compared with before test, and system stability is good, the mist droplet particle size of formation compared with
It is small, be nanoscale.By comparative example 1-2 it is found that aerosol obtained is formed using Tween 80 or emulsifier op-10 as emulsifier
Mist droplet particle size it is bigger than normal, be micron order, and place place for 24 hours for 24 hours or at 50 DEG C of high temperature at room temperature, droplet average grain diameter
Compared with before test, hence it is evident that increase, system stability is poor.By comparative example 3-4 it is found that using Tween 80 or emulsifier op-10 as
Emulsifier, while normal propyl alcohol is added as assistant for emulsifying agent, the mist droplet particle size that aerosol obtained is formed is big compared with embodiment 1-6, and
And placed for 24 hours at 50 DEG C of high temperature, droplet average grain diameter is compared with before test, hence it is evident that increases, system stability is poor.By comparative example
5 it is found that aerosol contains only emulsifier mannosylerythritol lipid, without assistant for emulsifying agent surfactant peptides, aerosol dosage form obtained
At mist droplet particle size it is bigger than normal, be micron order, and place place for 24 hours for 24 hours or at 50 DEG C of high temperature at room temperature, droplet is averaged grain
Diameter is compared with before test, hence it is evident that increases, system stability is poor.By comparative example 6 it is found that lacking two caprylic/capric ester of neopentyl glycol
Aerosol droplet average grain diameter is influenced little.
Test example two, insecticidal effect detection
According to GB/T 13917.2-2009 " agriculture chemical registration hygienic insecticide indoor pharmacodynamic test and evaluation part 2:
Aerosol " pertinent regulations, mosquito, grey is carried out to Environmentally-friepesticidal pesticidal aerosol made from embodiment 1-6 and comparative example 1-6 respectively
Fly, cockroaches are detected, and the results are shown in Table 3.
3 insecticidal effect testing result of table
Table 3 shows, 50% knockdown time (KT of the Environmentally-friepesticidal pesticidal aerosol made from embodiment 1-6 to Culex pipiens pallens50) be
1.28~1.54min, the death rate is 100% for 24 hours, to the 50% knockdown time (KT of housefly50) it is 1.44~1.84min, for 24 hours extremely
Dying rate is 100%, to the 50% knockdown time (KT of Groton bug50) be 1.87~2.36min, for 24 hours the death rate be 94.90~
98.24%, hence it is evident that better than Environmentally-friepesticidal pesticidal aerosol made from comparative example 1-6.By comparative example 1-2 it is found that with Tween 80 or emulsification
Agent OP-10 weakens the killing effect of Culex pipiens pallens, housefly, Groton bug as emulsifier, aerosol obtained, thus it is speculated that this is
Since aerosol solution system is unstable, cause active constituent that cannot sufficiently act on caused by pest.By comparative example 3-4 it is found that
Using Tween 80 or emulsifier op-10 as emulsifier, while normal propyl alcohol is added as assistant for emulsifying agent, aerosol desinsection effect obtained
Fruit slightly weakens.It is living without assistant for emulsifying agent surface by comparative example 5 it is found that aerosol contains only emulsifier mannosylerythritol lipid
Property peptide, aerosol insecticidal effect obtained obviously weakens, thus it is speculated that this is because individually using mannosylerythritol lipid as emulsification
Agent is difficult to form O/W type emulsification composition, and insecticidal effect is caused to weaken.By comparative example 6 it is found that lack the octanoic acid of neopentyl glycol two/
Decylate is substantially reduced the insecticidal effect of insect aerosol, shows that two caprylic/capric ester of neopentyl glycol is killed to aerosol is improved
Worm effect plays a significant role.
Test example three, atomizing effect detection
The atomizing effect of Environmentally-friepesticidal pesticidal aerosol made from embodiment 1 and comparative example 1-6 is detected respectively, observation spray
Whether spout is easy to spume when mist, the results are shown in Table 4.
4 atomizing effect testing result of table
Table 4 shows that Environmentally-friepesticidal pesticidal aerosol made from embodiment 1 has excellent atomizing effect, and spout when being sprayed
It is not easy to spume, is conducive to improve spray distance, effect is better than Environmentally-friepesticidal pesticidal aerosol made from comparative example 1-6.
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
It also should be regarded as protection scope of the present invention into retouching.