Insect-expelling environment-friendly sand-containing fog sealing layer and preparation method thereof

Abstract

The invention discloses an insect-repelling environment-friendly sand-containing fog sealing layer and a preparation method thereof. The insect-repelling environment-friendly sand-containing fog sealing layer comprises the following components in parts by mass: 35-70 parts of asphalt; 30 to 70 parts of water; 2-8 parts of a composite emulsifier; 0.5 to 3 parts of a defoaming agent; 5 to 30 parts of acrylic ester; 0.1 to 1 part of a photoinitiator; 20 to 40 parts of a suspending agent; 20 to 45 parts of fine sand particles; 5 to 40 parts of insect-repelling environment-friendly microcapsules; a shell material of the insect-repelling environment-friendly microcapsule is a composite shell material containing silicon dioxide / nano tourmaline, and a core material of the insect-repelling environment-friendly microcapsule comprises one or more of a pyrethroid compound, a carboxylic ester compound, an amide compound and a plant extract; a metal chelate is loaded on the surface of the shell material. The insect-repelling environment-friendly sand-containing fog sealing layer has good pavement performance and insect-repelling performance, and can effectively inhibit the amount of pollutants generated when an asphalt pavement is exposed to high temperature and solarization.

Description

Technical Field

[0001] The invention belongs to the field of special asphalt, and specifically relates to an insect-repellent and environmentally friendly sand-containing fog seal layer and a preparation method thereof. Background Art

[0002] In recent years, the natural environment has been significantly improved, and the number of insects has gradually increased. However, the range of these insects covers some highways, posing a threat to driving safety. During high-speed driving, a large number of insect carcasses will adhere to the windshield of the vehicle, seriously blocking the driver's vision. In addition, many highway pavements are currently in service for a long time and have disease problems that need to be solved. At the same time, some sections of highways and parks are often under strong sunlight, which causes the road surface temperature to rise and produces toxic gases such as volatile organic compounds and sulfides. The release of such gases not only harms the ecological environment, but also has a negative impact on human health.

[0003] CN113881341B discloses a high-performance fog seal material and its application, which improves the high and low temperature performance of the fog seal material by introducing water-based epoxy resin, water-based polyurethane and water-based acrylic resin into the fog seal material. However, the material provided by this method can only repair the early diseases of asphalt pavement, and cannot inhibit the asphalt smoke released by the asphalt pavement under high temperature, nor can it avoid the impact of insects on driving safety.

[0004] Therefore, there is an urgent need to develop a pavement material that can effectively maintain highway pavement, inhibit the release of toxic gases, and prevent insect pests, so as to achieve the dual goals of driving safety and environmental protection. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides an insect repellent and environmentally friendly sand-containing mist seal and a preparation method thereof. The insect repellent and environmentally friendly sand-containing mist seal of the present invention not only has good road performance and insect repellent performance, but also can effectively suppress the amount of pollutants generated by asphalt pavement under high temperature and sunlight, providing a new idea for the functional utilization of asphalt materials.

[0006] The first aspect of the present invention provides an insect repellent and environmentally friendly sand-containing mist seal layer, wherein the insect repellent and environmentally friendly sand-containing mist seal layer comprises the following components in parts by mass:

[0007] Asphalt: 35-70 parts;

[0008] Water: 30-70 parts;

[0009] Composite emulsifier: 2-8 parts;

[0010] Defoaming agent: 0.5-3 parts;

[0011] Acrylate: 5-30 parts;

[0012] Photoinitiator: 0.1-1 part;

[0013] Suspension: 20-40 parts;

[0014] Fine sand: 20-45 parts;

[0015] Insect repellent environmentally friendly microcapsules: 5-40 portions;

[0016] The insect repellent environmentally friendly microcapsule has a shell material that is a composite shell material comprising silicon dioxide / nano-tourmaline, and a core material that comprises one or more of pyrethroid compounds, carboxylic acid ester compounds, amide compounds, and plant extracts; and the surface of the shell material is loaded with metal chelates.

[0017] Furthermore, the asphalt is commercially available No. 70 or No. 90 base asphalt.

[0018] Furthermore, the composite emulsifier comprises a cationic emulsifier and an amphoteric emulsifier, and the mass ratio of the cationic emulsifier to the amphoteric emulsifier is 1:(0.5-2.5).

[0019] Further, the cationic emulsifier includes one or more of amine salt type surfactants with a carbon number greater than 8; preferably, one or more of tetradecyl-dimethylpyridinium ammonium bromide, octadecylamide propyl dimethyl dihydroxypropyl ammonium chloride, behenic acid amide propyl dimethyl dihydroxypropyl ammonium chloride, hexadecylamide propyl trimethyl ammonium chloride, dioctadecyl-methylbenzyl ammonium chloride, dodecyldimethylbenzyl ammonium chloride, octadecyldimethylhydroxyethyl quaternary ammonium nitrate, hexadecyltrimethylammonium bromide, and hexadecyltrimethylammonium chloride; further preferably, hexadecyltrimethylammonium bromide.

[0020] Furthermore, the amphoteric emulsifier is a polyol-type surfactant; preferably one or more of fatty acid ethylene glycol esters, monoglycerides, pentaerythritol fatty acid esters, sorbitan fatty acid esters, and sucrose fatty acid esters; more preferably sorbitan fatty acid esters.

[0021] Furthermore, the defoaming agent is one or more of sunflower oil, polydimethylsiloxane, eicosanol, and docosanol.

[0022] Furthermore, the acrylic ester is one or more of methyl acrylate, ethyl acrylate, methyl 2-methacrylate, ethyl 2-methacrylate, n-butyl acrylate, isooctyl acrylate, isobutyl acrylate, methoxyethyl acrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, dimethylaminoethyl acrylate, oligoester acrylate, trimethylolpropane triacrylate, and polyurethane acrylate; preferably, the acrylic ester includes methyl acrylate, hydroxyethyl acrylate and trimethylolpropane triacrylate at the same time, wherein the mass ratio of methyl acrylate, hydroxyethyl acrylate and trimethylolpropane triacrylate is 1:(1-5):(1-5).

[0023] Further, the photoinitiator is (2,4,6-trimethylbenzoyl) diphenylphosphine oxide, ethyl 2,4,6-trimethylbenzoylphosphonate, 2-methyl-1-(4-methylthiophenyl)-2-morpholinyl-1-propanone, 2-isopropylthioxanthone, 4-dimethylamino-ethyl benzoate, 1-hydroxy-cyclohexyl-phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, benzoin dimethyl ether, o-benzoyl At least one of methyl benzoate and 4-chlorobenzophenone; preferably, the photoinitiator simultaneously comprises (2,4,6-trimethylbenzoyl) diphenyl phosphine oxide, 1-hydroxy-cyclohexyl-phenyl ketone and methyl o-benzoylbenzoate, wherein the mass ratio of (2,4,6-trimethylbenzoyl) diphenyl phosphine oxide, 1-hydroxy-cyclohexyl-phenyl ketone and methyl o-benzoylbenzoate is 1:(1-3):(1-3).

[0024] Furthermore, the suspending agent is one or more of bentonite, kaolin, carbon black and talc.

[0025] Furthermore, the particle size of the suspending agent is 800-1800 mesh.

[0026] Furthermore, the fine sand particles are one or more of quartz sand, corundum sand, corundum sand or basalt sand;

[0027] Furthermore, the particle size of the fine sand particles is 30-300 mesh; preferably, the mass proportion of sand particles greater than or equal to 30 mesh and less than 70 mesh is 50-60%, the mass proportion of sand particles of 70-130 mesh is 20-30%, and the mass proportion of sand particles greater than 130 mesh and less than or equal to 300 mesh is 10-30%.

[0028] Furthermore, the diameter of the insect repellent and environmentally friendly microcapsules is 1-3 μm.

[0029] Furthermore, the mass ratio of the shell material to the core material of the insect repellent and environmentally friendly microcapsule is 1:(0.8-2.0).

[0030] Furthermore, the core material of the insect repellent and environmentally friendly microcapsule preferably includes pyrethroid compounds, carboxylic acid ester compounds, amide compounds, and plant extracts at the same time.

[0031] Furthermore, the pyrethroid compound has a carbon number greater than 18; preferably, it is one or more of cypermethrin, bifenthrin, flumethrin, cypermethrin, acepromazine, deltamethrin, and tetramethrin.

[0032] Furthermore, the carbon number of the carboxylic acid ester is greater than 9; preferably, it is one or more of ethyl butyl acetylaminopropionate, hexyl diethylcarbamoylformate, butyl 3-methylquinoline-4-carboxylate, dibutyl succinate, and dipropyl 2,5-pyridinedicarboxylate.

[0033] Furthermore, the carbon number of the amide compound is greater than 10; preferably, it is one or more of N,N-diethyl-3-methylbenzamide, ethylhexyl bicycloheptene dicarboximide, and N,N-diethylbenzamide.

[0034] Furthermore, the carbon number of the plant extract is greater than 9; preferably, it is one or more of camphor and borneol.

[0035] Furthermore, the shell material is a silica / nano-tourmaline composite shell material, wherein the mass ratio of silica to nano-tourmaline is (1-5):1.

[0036] Furthermore, the shell material surface is loaded with a metal chelate, wherein the metal is preferably copper. The metal chelating agent is preferably at least one of iminodiacetic acid, triethylenediamine, and nitrilotriacetic acid, and more preferably iminodiacetic acid.

[0037] Furthermore, the surface of the shell material is loaded with metal chelates, and the metal loading accounts for 0.1wt%-10wt% of the total mass of the insect repellent environmentally friendly microcapsules.

[0038] Furthermore, the method for preparing the insect repellent environmentally friendly microcapsules comprises the following steps:

[0039] S1: mixing nano tourmaline powder, a surfactant and a solvent, modifying the mixture under stirring, washing the mixture after modification, and freeze-drying the mixture to obtain modified nano tourmaline powder;

[0040] S2: stirring and mixing one or more of the pyrethroid compound, lipid compound, amide compound, and plant extract to obtain a core material mixed liquid;

[0041] S3: adding the solvent and the modified nano-tourmaline powder obtained in step S1 to the core material mixed solution obtained in step S2, and stirring and mixing;

[0042] S4: adding the shell material precursor to the reaction system in step S3, stirring and mixing, and obtaining a Pickering emulsion;

[0043] S5: adjusting the pH value of the Pickering emulsion obtained in step S4 to 3-6, continuing stirring, and then aging, filtering, and freeze-drying to obtain an insect repellent and environmentally friendly microcapsule matrix;

[0044] S6: dispersing the insect repellent and environmentally friendly microcapsule matrix obtained in step S5 in a methanol dispersion, then adding a coupling agent methanol solution, and adjusting the pH value of the reaction system to 9-11, treating under stirring, and then filtering, washing, and freeze-drying;

[0045] S7: dispersing the solid powder obtained after freeze-drying in step S6 in a buffer, adding a chelating agent, treating under stirring, filtering, washing, and freeze-drying;

[0046] S8: dispersing the solid powder obtained after freeze-drying in step S7 in a metal ion salt-formamide solution, treating under stirring, filtering, washing, and freeze-drying after the reaction is completed, to obtain insect repellent and environmentally friendly microcapsules.

[0047] Furthermore, in step S1, the particle size of the nano-tourmaline powder is 10-100 nm.

[0048] Furthermore, in step S1, the surfactant is a cationic surfactant, preferably at least one of cetyltrimethylammonium bromide (CTAB), dodecyldimethylbenzylammonium chloride, and octadecyltrimethylammonium chloride, and more preferably cetyltrimethylammonium bromide (CTAB).

[0049] Furthermore, in step S1, the solvent is an aprotic solvent with a boiling point > 100°C, preferably at least one of formamide, N,N-dimethylformamide, dimethylacetamide, and dimethylphosphoramide, and more preferably formamide.

[0050] Furthermore, in step S1, the mass ratio of the nano-tourmaline powder to the surfactant is (3-10):1, and the mass ratio of the solvent to the surfactant is (20-40):1.

[0051] Furthermore, in step S1, the stirring speed is 400-600 rpm, the modification temperature is 100-200° C., and the modification time is 4-8 hours.

[0052] Furthermore, in step S1, the freeze-drying conditions are: vacuum drying at a temperature of -40°C to -20°C for 4-8 hours.

[0053] Furthermore, in step S2, the stirring speed is 400-600 rpm, the stirring temperature is 40-60° C., and the stirring time is 3-10 minutes.

[0054] Furthermore, in step S3, the solvent is an aprotic solvent with a boiling point > 100°C, preferably at least one of formamide, N,N-dimethylformamide, dimethylacetamide, and dimethylphosphoramide, and more preferably formamide.

[0055] Furthermore, in step S3, the mass ratio of the core material mixture to the modified nano-tourmaline powder is (1-5):1; the mass ratio of the solvent to the modified nano-tourmaline powder is (20-40):1.

[0056] Furthermore, in step S3, the stirring speed is 400-600 rpm, the stirring temperature is 40-60° C., and the stirring time is 4-6 hours.

[0057] Furthermore, in step S4, the shell material precursor is a silicate compound, preferably at least one of methyl silicate, ethyl orthosilicate, tetraethyl orthosilicate, and butyl orthosilicate, and more preferably ethyl orthosilicate.

[0058] Furthermore, in step S4, the mass ratio of the core material mixed liquid to the shell material precursor is (0.5-2): 1. The stirring speed is 400-600 rpm, the stirring temperature is 40-60° C., and the stirring time is 4-6 hours.

[0059] Furthermore, in step S5, the pH can be adjusted by using dilute acid, such as dilute hydrochloric acid. The stirring speed is 400-600 rpm, the stirring temperature is 40-60° C., and the stirring time is 4-6 hours.

[0060] Furthermore, in step S5, the aging condition is: standing at 40-60°C for 12-30 hours. The freeze-drying condition is: vacuum drying at a temperature of -40--20°C for 4-8 hours.

[0061] Furthermore, in step S6, the insect repellent and environmentally friendly microcapsule matrix is ​​dispersed in methanol by ultrasonic dispersion.

[0062] Further, in step S6, the coupling agent is a silane coupling agent, preferably at least one of 3-chloropropyltrimethylsilane, (dichloromethyl)trimethylsilane, (trichloromethyl)trimethylsilane, (chlorodifluoromethyl)trimethylsilane, and more preferably 3-chloropropyltrimethylsilane.

[0063] Furthermore, in step S6, the coupling agent methanol solution is prepared from a coupling agent and methanol, and the mass ratio of methanol to the coupling agent is (10-15):1.

[0064] Furthermore, in step S6, the mass ratio of the methanol dispersion to the insect repellent environmentally friendly microcapsule matrix is ​​(10-20): 1. The mass ratio of the insect repellent environmentally friendly microcapsule matrix to the coupling agent methanol solution is (1-15): 1.

[0065] Furthermore, in step S6, the pH may be adjusted using an alkaline solution, such as aqueous ammonia.

[0066] Furthermore, in step S6, the stirring speed is 200-450 rpm; the treatment temperature is 40-60° C., and the treatment time is 4-6 hours.

[0067] Furthermore, in step S6, the reaction is carried out under the protection of nitrogen or an inert gas.

[0068] Furthermore, in step S6, the freeze-drying conditions are: vacuum drying at -40°C to -20°C for 4-8h.

[0069] Furthermore, in step S7, the solid powder obtained after freeze-drying in step S6 is dispersed in a buffer solution, and ultrasonic dispersion can be used.

[0070] Furthermore, the buffer described in step S7 is preferably one of a phosphate buffer and a carbonate buffer, and further preferably a carbonate buffer.

[0071] Furthermore, in step S7, the pH value of the buffer solution is 9-11.

[0072] Furthermore, in step S7, the mass ratio of the buffer solution to the solid powder obtained after freeze-drying in step S6 is (15-20):1.

[0073] Furthermore, in step S7, the ligand tooth number of the chelating agent is greater than 2, and is preferably iminodiacetic acid, triethylenediamine, or nitrilotriacetic acid, and more preferably iminodiacetic acid.

[0074] Furthermore, in step S7, the mass ratio of the solid powder obtained after freeze-drying in step S6 to the chelating agent is (10-15):1.

[0075] Furthermore, in step S7, the stirring speed is 200-450 rpm, the treatment temperature is 40-60° C., and the treatment time is 2-5 hours.

[0076] Furthermore, in step S7, the freeze-drying conditions are: vacuum drying at -40°C to -20°C for 4-8h.

[0077] Furthermore, in step S8, the solid powder obtained after drying in step S7 is dispersed in a metal ion salt-formamide solution, and ultrasonic dispersion can be used.

[0078] Furthermore, in step S8, the metal ion salt is preferably a copper ion salt, and more preferably anhydrous copper sulfate.

[0079] Furthermore, in step S8, in the metal ion salt-formamide solution, the mass ratio of the metal ion salt to formamide is (0.5-1.5):1.

[0080] Furthermore, in step S8, the mass ratio of the metal ion salt-formamide solution to the solid powder obtained after drying in step S7 is (5-15):1.

[0081] Furthermore, in step S8, the stirring speed is 200-450 rpm, the treatment temperature is 100-180° C., and the treatment time is 2-5 hours.

[0082] Furthermore, in step S8, the freeze-drying conditions are: vacuum drying at -40°C to -20°C for 4-8h.

[0083] The second aspect of the present invention provides a method for preparing the above-mentioned insect repellent and environmentally friendly sand-containing fog seal layer, comprising the following steps:

[0084] P1: Preparation of composite emulsifier;

[0085] P2: Stir and mix water and part of the composite emulsifier prepared in step P1, adjust the pH value, and obtain a soap solution;

[0086] P3: Stir and mix the acrylate compound and the photoinitiator to obtain a photocuring agent;

[0087] P4: After heating the asphalt and the soap solution obtained in step P2 respectively, shearing them to obtain emulsified asphalt;

[0088] P5: Add the remaining part of the composite emulsifier prepared in step P1 to the emulsified asphalt obtained in step P4, and stir to mix;

[0089] P6: Add defoaming agent to the reaction system of step P5 and stir to mix;

[0090] P7: Add a suspending agent to the reaction system of step P6 and stir to mix;

[0091] P8: Add insect repellent environmentally friendly microcapsules to the reaction system of step P7 and stir to mix;

[0092] P9: Add the photocuring agent prepared in step P3 to the reaction system in step P8, and stir to mix;

[0093] P10: Add fine sand particles to the reaction system of step P9, stir and mix, and obtain an insect repellent and environmentally friendly sand-containing mist seal layer.

[0094] Furthermore, in step P1, the preparation of the composite emulsifier is to uniformly mix the cationic emulsifier and the amphoteric emulsifier.

[0095] Furthermore, in step P2, the water is preferably deionized water. The mass ratio of the water to the composite emulsifier is (5-20):1.

[0096] Furthermore, in step P2, the stirring speed is 100-600 rpm, the stirring temperature is 50-90° C., and the stirring time is 5-20 minutes.

[0097] Furthermore, in step P2, the pH can be adjusted by using an acetic acid aqueous solution, and the pH value is adjusted to 2-4.

[0098] Furthermore, in step P3, the stirring speed is 100-600 rpm, the stirring temperature is 40-90° C., and the stirring time is 5-20 minutes.

[0099] Furthermore, in step P4, the heating temperature of the asphalt is 113-183°C. The heating temperature of the soap solution is 30-60°C.

[0100] Furthermore, in step P4, the shearing is preferably performed in multiple cycles, and more preferably 3-5 times of shearing. The speed of each shearing is 3000-5000 rpm, and the time of each shearing is 2-20 minutes.

[0101] Furthermore, the mass ratio of the composite emulsifier added in step P5 to the composite emulsifier added in step P2 is 1:2-5.

[0102] Furthermore, in step P5, the stirring speed is 100-600 rpm, the stirring temperature is 30-90° C., and the stirring time is 2-20 minutes.

[0103] Furthermore, in step P6, the stirring speed is 100-600 rpm, the stirring temperature is 30-90° C., and the stirring time is 2-20 minutes.

[0104] Furthermore, in step P7, the suspending agent is preferably added in multiple times, and more preferably added in 3-5 times.

[0105] Furthermore, in step P7, the stirring speed is 700-1600 rpm, the stirring temperature is 30-90° C., and the stirring time is 10-50 minutes.

[0106] Furthermore, in step P8, the stirring speed is 300-500 rpm, the stirring temperature is 30-90° C., and the stirring time is 10-50 minutes.

[0107] Furthermore, in step P9, the stirring speed is 300-500 rpm, the stirring temperature is 30-90° C., and the stirring time is 10-50 minutes.

[0108] Furthermore, in step P10, the stirring speed is 100-600 rpm, the stirring temperature is 40-90° C., and the stirring time is 2-20 minutes.

[0109] Compared with the prior art, the present invention has the following advantages:

[0110] (1) After the insect repellent and environmentally friendly sand-containing mist seal layer of the present invention is spread on the road surface, the insect repellent and environmentally friendly microcapsules in the system will slowly release the insect repellent, so as to keep insects away from the road surface area and prevent insects from affecting pedestrian and vehicle safety. It also has a long-lasting insect repellent effect and can avoid repeated construction.

[0111] (2) The insect repellent and environmentally friendly sand-containing mist seal of the present invention has an extremely short curing time under sunlight exposure and has an excellent embedding effect on the road surface, which can effectively extend the service life of the road surface.

[0112] (3) The insect repellent and environmentally friendly sand-containing mist seal layer of the present invention contains insect repellent and environmentally friendly microcapsules, and its shell material is a composite shell material including silica / nano-tourmaline, wherein in the process of preparing the insect repellent and environmentally friendly microcapsules, tourmaline powder can replace the template agent for microcapsule synthesis to maintain the stability of the microcapsule core material droplets; in addition, in the process of metal ion modification of the shell material, a large amount of metal ions can be adsorbed onto the surface of the microcapsules with the help of the negative ion field released by the tourmaline, effectively increasing the loading capacity of the transition metal ions of the microcapsule shell material, and can react chemically with the sulfides released by the asphalt pavement under high temperature, effectively reducing the malodorous gas released by the asphalt under the action of high temperature and sunlight, and avoiding the discomfort caused by the asphalt pavement to the human body; further, in the process of pavement service, after the insect repellent and environmentally friendly microcapsules are heated, the nano-tourmaline powder contained in the shell material will release the negative ion field, further attracting the compounds released by the asphalt pavement under the action of high temperature to the vicinity of the insect repellent and environmentally friendly microcapsules, while increasing the difficulty of these compounds to volatilize, the metal ions on the surface of the microcapsules can react with more of the above-mentioned compounds, further inhibiting their volatilization, thereby effectively reducing the impact of the irritating gas released by the asphalt pavement on the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0113] Figure 1 This is an electron microscope image of the insect repellent and environmentally friendly microcapsules obtained in Example 1. DETAILED DESCRIPTION

[0114] To further illustrate the relevant features and technical means of the present invention, the present invention will be clearly and detailed described below in conjunction with embodiments.

[0115] The insect repellent and environmentally friendly microcapsules of the present invention are tested for morphology by scanning electron microscopy, and the acceleration voltage used is 20KV. Since the wall material of the microcapsule is not conductive, the sample needs to be treated with gold spraying before the test.

[0116] The insect repellent and environmentally friendly microcapsules of the present invention are tested for surface elements by an X-ray spectrometer to confirm that the metal ions are successfully modified on the surface of the microcapsules.

[0117] In the present invention, the anthelmintic effect is evaluated by the following method:

[0118] Spread the insect repellent and environmentally friendly sand-containing fog sealing material on a vacant lot in a park. The spreading area is 300mm*300mm and the spreading amount is 1.0kg / m 3 The test area is 100m 3 , use cameras to monitor and record the test area.

[0119] The smoke suppression effect of the insect repellent and environmentally friendly sand-containing mist sealing material of the present invention is tested by a VOC detector with an FID detector and a smoke detector with an H2S electrochemical sensor.

[0120] The base asphalt used in the following examples and comparative examples is Sinopec Donghai Brand No. 70 Grade A asphalt.

[0121] Example 1

[0122] Preparation of insect repellent environmentally friendly microcapsules:

[0123] S1: Add tourmaline powder with a particle size of 80 nm, hexadecyltrimethylammonium bromide (CTAB) and formamide into the first container, wherein the mass ratio of tourmaline powder, hexadecyltrimethylammonium bromide (CTAB) and formamide is 3:1:30, and stir at 140°C and 400 rpm for 5 hours to modify the surface of the nano tourmaline powder. After the modification, wash the modified nano tourmaline with ethanol for multiple times, and vacuum dry it at -30°C for 5 hours for standby use;

[0124] S2: adding cypermethrin, dibutyl succinate, N,N-diethyl-3-methylbenzamide and camphor in equal mass ratios into the second container, and stirring at 400 rpm for 5 minutes at 50° C. to obtain a core material mixed solution;

[0125] S3: adding modified nano-tourmaline powder and formamide, the mass ratio of the core material mixture, modified nano-tourmaline powder and formamide is 2:1:30, and stirring is continued at 50°C and 400 rpm for 5 hours;

[0126] S4: adding tetraethyl orthosilicate to the above reaction system, with the mass ratio of the core material mixture to tetraethyl orthosilicate being 1:1, and continuing to stir at 400 rpm at 50° C. for 5 hours to obtain a Pickering emulsion;

[0127] S5: using a peristaltic pump, slowly adding 10 wt % dilute hydrochloric acid to the reaction system until the pH of the reaction system is 4, continuing to stir at 400 rpm for 5 hours at 50° C., then stopping stirring, keeping the temperature unchanged and aging for 24 hours, then filtering and washing the solid in the reaction system, and vacuum drying at -30° C. for 5 hours to obtain an insect repellent and environmentally friendly microcapsule matrix;

[0128] S6: ultrasonically dispersing the insect repellent and environmentally friendly microcapsule matrix obtained in step S5 in methanol, then dripping 10wt% 3-chloropropyltrimethylsilane methanol solution, adjusting the pH value to 11 with ammonia water, stirring for 5 hours at 400 rpm and 60°C, the mass ratio of methanol, insect repellent and environmentally friendly microcapsule matrix, and 3-chloropropyltrimethylsilane methanol solution is 10:1:1, and the whole reaction process is carried out under nitrogen protection, and after the stirring is completed, the solid powder is filtered, washed, and vacuum dried at -30°C for 5 hours;

[0129] S7: ultrasonically disperse the solid powder obtained in S6 in a carbonate buffer solution of pH=11, then add iminodiacetic acid, the mass ratio of carbonate buffer solution, solid powder and iminodiacetic acid is 150:10:1, stir at 400 rpm and 50°C for 5 hours, filter the solid powder after stirring, wash it, and vacuum dry it at -30°C for 5 hours;

[0130] S8: Ultrasonic dispersion of the solid powder obtained in S7 in a 50wt% anhydrous copper sulfate-formamide solution, with the mass ratio of the solid powder to the anhydrous copper sulfate-formamide solution being 1:10, and stirring at 400 rpm and 140°C for 5 hours. After stirring, the solid powder is filtered, washed, and vacuum dried at -30°C for 5 hours to obtain insect repellent environmentally friendly microcapsules, as shown in the electron microscope image. Figure 1 .

[0131] The preparation method of insect repellent environmentally friendly sand mist seal is as follows. It should be noted that the product needs to be protected from light during preparation and transportation:

[0132] P1: Add 3 parts by mass of hexadecyltrimethylammonium bromide and 3 parts by mass of sorbitan fatty acid ester into the first container, and stir evenly to obtain a composite emulsifier;

[0133] P2: Add 45 parts by mass of deionized water and 5 parts by mass of the composite emulsifier prepared in step P1 into a second container, stir and mix at 60° C. and 400 rpm for 20 minutes, and adjust the pH to 3 with an acetic acid aqueous solution to obtain a soap solution;

[0134] P3: 10 parts by mass of methyl acrylate, 10 parts by mass of hydroxyethyl acrylate, 10 parts by mass of trimethylolpropane triacrylate, 0.3 parts by mass of (2,4,6-trimethylbenzoyl) diphenylphosphine oxide, 0.4 parts by mass of 1-hydroxy-cyclohexyl-phenyl ketone and 0.3 parts by mass of methyl o-benzoylbenzoate were added to a third container, and the mixture was stirred and mixed at 60° C. and 400 rpm for 20 minutes to obtain a photocuring agent;

[0135] P4: 50 parts by mass of 70#A grade asphalt heated to 163°C and the soap solution obtained in step P2 heated to 60°C were added to a colloid mill, and sheared at a speed of 4000 rpm for 5 min, and the emulsified asphalt was obtained after cyclic shearing for 3 times;

[0136] P5: Add 1 part by mass of the composite emulsifier obtained in step P2 to the emulsified asphalt obtained in step P4, and stir and mix at 400 rpm and 60° C. for 20 minutes;

[0137] P6: Add 2 parts by mass of polydimethylsiloxane to the reaction system of step P5, and stir and mix at 400 rpm and 60° C. for 20 minutes;

[0138] P7: Slowly add 30 parts by mass of 1200 mesh kaolin to the reaction system of step P6 in 5 portions, and stir and mix at 1500 rpm and 60° C. for 40 minutes;

[0139] P8: Add 20 parts by weight of insect repellent microcapsules to the system in step P7, and stir and mix at 500 rpm and 60° C. for 50 minutes;

[0140] P9: Add the light curing agent prepared in step P3 to the system in step P8, and stir and mix at 500 rpm and 60° C. for 40 minutes;

[0141] P10: Add 30 parts by mass of quartz sand to the system of step P9, wherein the mass proportion of sand particles greater than or equal to 30 mesh and less than 70 mesh is 70%, the mass proportion of sand particles of 70-130 mesh is 20%, and the mass proportion of sand particles greater than 130 mesh and less than or equal to 300 mesh is 10%. Stir and mix at 600 rpm and 60°C for 20 minutes to obtain an insect-repellent and environmentally friendly sand-containing fog sealing material.

[0142] Example 2

[0143] The process is the same as in Example 1 except that step S2 is changed to adding cypermethrin, diethylcarbamoylformate, N,N-diethylbenzamide and bornyl alcohol in equal mass ratios into the second container.

[0144] Example 3

[0145] Except that the amount of the insect repellent environmentally friendly microcapsules used in step P8 is 5 parts by mass, the rest is the same as in Example 1.

[0146] Example 4

[0147] Except that the acrylic ester compound in step P3 is 15 parts by mass of isooctyl acrylate and 15 parts by mass of isobutyl acrylate, the rest is the same as in Example 1.

[0148] Example 5

[0149] Except that the amount of the photocuring agent added in step P9 is 20 parts by mass, the rest is the same as in Example 1.

[0150] Example 6

[0151] Except that the mass ratio of the core material mixed solution, the modified nano-tourmaline powder and the formamide in step S3 is 3:1:30, the rest is the same as that in Example 1.

[0152] Example 7

[0153] Except that the mass ratio of the solid powder to the anhydrous copper sulfate-formamide solution in step S8 is 1:5, the rest is the same as that in Example 1.

[0154] Comparative Example 1

[0155] P1: Add 3 parts by mass of hexadecyltrimethylammonium bromide and 3 parts by mass of sorbitan fatty acid ester into the first container, and stir manually to obtain a composite emulsifier;

[0156] P2: Add 45 parts by mass of deionized water and 5 parts by mass of the composite emulsifier prepared in P1 to the second container, stir and mix at 60°C and 400 rpm for 20 minutes, and adjust the pH to 3 with acetic acid to obtain a soap solution;

[0157] P3: 10 parts by mass of methyl acrylate, 10 parts by mass of hydroxyethyl acrylate, 10 parts by mass of trimethylolpropane triacrylate, 0.3 parts by mass of (2,4,6-trimethylbenzoyl) diphenylphosphine oxide, 0.4 parts by mass of 1-hydroxy-cyclohexyl-phenyl ketone and 0.3 parts by mass of methyl o-benzoylbenzoate were added to a third container, and the mixture was stirred and mixed at 60° C. and 400 rpm for 20 minutes to obtain a photocuring agent;

[0158] P4: 50 parts by mass of 70#A grade asphalt heated to 163°C and the soap solution obtained in step P2 heated to 60°C were added to a colloid mill, and sheared at a speed of 4000 rpm for 5 min, and the emulsified asphalt was obtained after cyclic shearing for 3 times;

[0159] P5: Add 1 part by mass of the composite emulsifier obtained in step P2 to the emulsified asphalt obtained in step P4, and stir and mix at 400 rpm and 60° C. for 20 minutes;

[0160] P6: Add 2 parts by mass of polydimethylsiloxane to the reaction system of step P5, and stir and mix at 400 rpm and 60° C. for 20 minutes;

[0161] P7: Slowly add 30 parts by mass of 1200 mesh kaolin to the reaction system of step P6 in 5 portions, and stir and mix at 1500 rpm and 60° C. for 40 minutes;

[0162] P8: Add the light curing agent prepared in step P3 to the system in step P7, and stir and mix at 500 rpm and 60° C. for 40 minutes;

[0163] P9: Add 30 parts by mass of quartz sand to the system of step P8, wherein the mass proportion of 30-70 mesh sand is 70%, the mass proportion of 70-130 mesh sand is 20%, and the mass proportion of 130-300 mesh sand is 10%. Stir and mix at 600 rpm and 60°C for 20 minutes to obtain an insect-repellent and environmentally friendly sand-containing fog sealing material.

[0164] Comparative Example 2

[0165] Preparation of insect repellent environmentally friendly microcapsules:

[0166] S1: adding the selected cypermethrin, dibutyl succinate, N,N-diethyl-3-methylbenzamide and camphor in equal mass ratio into the first container, and stirring at 400 rpm for 5 minutes at 50° C. to obtain a core material mixed solution;

[0167] S2: Keeping the above reaction conditions unchanged, cetyltrimethylammonium bromide and formamide were added, the mass ratio of the core material mixture, cetyltrimethylammonium bromide and formamide was 4:1:30, and further stirred at 400 rpm at 50°C for 5 hours;

[0168] S3: Keeping the reaction conditions unchanged, add tetraethyl orthosilicate to the above reaction system, the mass ratio of the core material mixture to tetraethyl orthosilicate is 1:1, and continue stirring for 5 hours;

[0169] S4: Keeping the reaction conditions unchanged, using a peristaltic pump to slowly add dilute hydrochloric acid to the above reaction system until the pH of the reaction system is 4, stirring is continued for 5 hours and then stopped, and the temperature is kept unchanged for aging for 24 hours, and then the solid in the reaction system is filtered, washed and freeze-dried to obtain an insect repellent environmentally friendly microcapsule matrix;

[0170] S5: ultrasonically dispersing the insect repellent environmentally friendly microcapsules obtained in S4 in methanol, then dripping 10wt% 3-chloropropyltrimethylsilane methanol solution, further adjusting the pH value to 11 with ammonia water, stirring the reaction at 400 rpm and 60°C for 5 hours, the mass ratio of methanol, insect repellent environmentally friendly microcapsules, and 3-chloropropyltrimethylsilane methanol solution being 10:1:1, and the entire reaction process being carried out under nitrogen protection, after the stirring is completed, filtering, washing, and freeze-drying the solid powder;

[0171] S6: ultrasonically disperse the solid powder obtained in S5 in a carbonate buffer solution of pH=11, then add iminodiacetic acid, and stir the mixture for 5 hours at 400 rpm and 50° C. The mass ratio of carbonate buffer solution, solid powder, and iminodiacetic acid is 150:10:1. After stirring, the solid powder is filtered, washed, and freeze-dried;

[0172] S7: Ultrasonic dispersion of the solid powder obtained in S6 in a 50wt% anhydrous copper sulfate-formamide solution, further stirring and reacting at 400 rpm and 140°C for 5 hours, wherein the mass ratio of the solid powder to the anhydrous copper sulfate-formamide solution is 1:10. After the stirring is completed, the solid powder is filtered, washed, and freeze-dried to obtain insect repellent and environmentally friendly microcapsules.

[0173] The preparation method of insect repellent and environmentally friendly sand-containing fog sealing material is as follows. It should be noted that the product needs to be protected from light during preparation and transportation:

[0174] P1: Add 3 parts by mass of hexadecyltrimethylammonium bromide and 3 parts by mass of sorbitan fatty acid ester into the first container, and stir manually to obtain a composite emulsifier;

[0175] P2: Add 45 parts by mass of deionized water and 5 parts by mass of the composite emulsifier prepared in P1 to the second container, stir and mix at 60°C and 400 rpm for 20 minutes, and adjust the pH to 3 with acetic acid to obtain a soap solution;

[0176] P3: 10 parts by mass of methyl acrylate, 10 parts by mass of hydroxyethyl acrylate, 10 parts by mass of trimethylolpropane triacrylate, 0.3 parts by mass of (2,4,6-trimethylbenzoyl) diphenylphosphine oxide, 0.4 parts by mass of 1-hydroxy-cyclohexyl-phenyl ketone and 0.3 parts by mass of methyl o-benzoylbenzoate were added to a third container, and the mixture was stirred and mixed at 60° C. and 400 rpm for 20 minutes to obtain a photocuring agent;

[0177] P4: 50 parts by mass of 70#A grade asphalt heated to 163°C and the soap solution obtained in step P2 heated to 60°C were added to a colloid mill, and sheared at a speed of 4000 rpm for 5 min, and the emulsified asphalt was obtained after cyclic shearing for 3 times;

[0178] P5: Add 1 part by mass of the composite emulsifier obtained in step P2 to the emulsified asphalt obtained in step P4, and stir and mix at 400 rpm and 60° C. for 20 minutes;

[0179] P6: Add 2 parts by mass of polydimethylsiloxane to the reaction system of step P5, and stir and mix at 400 rpm and 60° C. for 20 minutes;

[0180] P7: Slowly add 30 parts by mass of 1200 mesh kaolin to the reaction system of step P6 in 5 portions, and stir and mix at 1500 rpm and 60° C. for 40 minutes;

[0181] P8: Add 20 parts by weight of insect repellent microcapsules to the system in step P7, and stir and mix at 500 rpm and 60° C. for 50 minutes;

[0182] P9: Add the light curing agent prepared in step P3 to the system in step P8, and stir and mix at 500 rpm and 60° C. for 40 minutes;

[0183] P10: Add 30 parts by mass of quartz sand to the system of step P9, wherein the mass proportion of 30-70 mesh sand is 70%, the mass proportion of 70-130 mesh sand is 20%, and the mass proportion of 130-300 mesh sand is 10%. Stir and mix at 600 rpm and 60°C for 20 minutes to obtain an insect-repellent and environmentally friendly sand-containing fog sealing material.

[0184] Comparative Example 3

[0185] The preparation of insect repellent environmentally friendly microcapsules is the same as in Example 1.

[0186] The preparation method of insect repellent and environmentally friendly sand-containing fog sealing material is as follows. It should be noted that the product needs to be protected from light during preparation and transportation:

[0187] P1: Add 3 parts by mass of hexadecyltrimethylammonium bromide and 3 parts by mass of sorbitan fatty acid ester into the first container, and stir manually to obtain a composite emulsifier;

[0188] P2: Add 45 parts by mass of deionized water and 5 parts by mass of the composite emulsifier prepared in P1 to the second container, stir and mix at 60°C and 400 rpm for 20 minutes, and adjust the pH to 3 with acetic acid to obtain a soap solution;

[0189] P3: 50 parts by mass of 70#A grade asphalt at 163°C and soap solution prepared from P2 at 60°C were added to a colloid mill, sheared at 4000 rpm for 5 min, and cyclically sheared for 3 times to obtain emulsified asphalt;

[0190] P4: 1 part by mass of the composite emulsifier prepared in P2 was further added to the above emulsified asphalt, and the mixture was stirred and mixed at 400 rpm and 60°C for 20 minutes;

[0191] P5: Further keeping the reaction conditions unchanged, 2 parts by mass of polydimethylsiloxane was added to the above reaction system, and stirred for 20 minutes;

[0192] P6: 30 parts by mass of 1200 mesh kaolin were slowly added to the above reaction system in 5 portions, and the mixture was stirred at 1500 rpm and 60° C. for 40 minutes;

[0193] P7: Further keeping the reaction conditions unchanged, 20 parts by weight of insect repellent environmentally friendly microcapsules were added to the above system, and stirred and mixed at 500 rpm and 60° C. for 50 minutes;

[0194] P8: Further add quartz sand to the above system, wherein 30-70 mesh sand accounts for 70% by mass, 70-130 mesh sand accounts for 20% by mass, and 130-300 mesh sand accounts for 10% by mass. Stir and mix at 600 rpm and 60°C for 20 minutes to obtain an insect-repellent and environmentally friendly sand-containing fog sealing material.

[0195] Comparative Example 4

[0196] S1: Add tourmaline powder with a particle size of 80 nm, hexadecyltrimethylammonium bromide (CTAB) and formamide into the first container, the mass ratio of tourmaline powder, hexadecyltrimethylammonium bromide (CTAB) and formamide is 3:1:30, stir and react at 140°C and 400 rpm for 5 hours to modify the surface of the nano tourmaline powder, wash the modified nano tourmaline with ethanol for multiple times after the reaction is completed, and vacuum dry for 5 hours at -30°C for standby use;

[0197] S2: adding cypermethrin, dibutyl succinate, N,N-diethyl-3-methylbenzamide and camphor in equal mass ratios into the second container, and stirring at 400 rpm for 5 minutes at 50° C. to obtain a core material mixed solution;

[0198] S3: adding modified nano-tourmaline powder and formamide, the mass ratio of the core material mixture, modified nano-tourmaline powder and formamide is 2:1:30, and stirring is continued at 50°C and 400 rpm for 5 hours;

[0199] S4: adding tetraethyl orthosilicate to the above reaction system, with the mass ratio of the core material mixture to tetraethyl orthosilicate being 1:1, and continuing to stir at 400 rpm at 50° C. for 5 hours to obtain a Pickering emulsion;

[0200] S5: using a peristaltic pump to slowly drop 10 wt % dilute hydrochloric acid into the above reaction system until the pH of the reaction system is 4, stirring is continued at 400 rpm for 5 hours at 50° C., and then the stirring is stopped, and the temperature is kept unchanged for aging for 24 hours, and then the solid in the reaction system is filtered and washed, and vacuum dried at -30° C. for 5 hours to obtain an insect repellent and environmentally friendly microcapsule matrix;

[0201] The preparation method of the insect repellent sand-containing mist seal layer is the same as that of Example 1, except that in step P8, 20 parts by mass of the insect repellent environmentally friendly microcapsule matrix is ​​used instead of 20 parts by mass of the insect repellent environmentally friendly microcapsules.

[0202] Test Case

[0203] The paint wheel abrasion and the bonding strength with the base surface of the prepared insect repellent and environmentally friendly sand-containing fog sealing material were tested, and the obtained data are shown in Table 1 below.

[0204] Table 1 Performance test of sand-containing fog seal

[0205] sample <![CDATA[Wet wheel abrasion value / g·m -2 > 25℃ tensile strength / MPa Example 1 31.7 2.23 Example 2 31.7 2.21 Example 3 32.0 2.20 Example 4 31.8 2.21 Example 5 32.2 2.15 Example 6 31.9 2.21 Example 7 31.8 2.22 Comparative Example 1 33.1 2.10 Comparative Example 2 32.8 2.11 Comparative Example 3 70.0 1.33 Comparative Example 4 32.7 2.12

[0206] The frequency of insect activities in the test area was summarized, and the data obtained are shown in the following Table 2. It can be seen from the test data that after the insect repellent and environmentally friendly sand-containing fog sealing material containing insect repellent and environmentally friendly microcapsules was spread, the frequency of insect activities in the test area was significantly reduced.

[0207] Table 2 Frequency of insect occurrence

[0208]

[0209] The gases released by asphalt pavement under the influence of high temperature are mainly volatile organic compounds and sulfides. In order to verify the smoke suppression ability of the insect-repellent and environmentally friendly sand-containing fog sealing material on asphalt materials, the samples prepared in Examples 1-7 and Comparative Examples 1-4 are spread on the surface of the asphalt mixture test block. The size of the asphalt mixture test block is 10cm*10cm*3cm. The samples are further moved into a sealed container with a gas intake port and stored at a temperature of 80°C for 2 days. After the storage is completed, the gas in the sealed container is absorbed, and the VOCs and H2S contents in the gas are tested using a TVA-2020 VOC detector and a Testo 350 smoke detector. The obtained data are shown in Table 3 below.

[0210] It can be seen from the test data that the contents of volatile organic compounds and hydrogen sulfide in the smoke generated by the test blocks sprinkled with insect repellent and environmentally friendly sand-containing mist sealing materials are greatly reduced. Reducing the insect repellent and environmentally friendly microcapsules or not introducing tourmaline will reduce the smoke suppression effect of the insect repellent and environmentally friendly sand-containing mist sealing materials, while the insect repellent and environmentally friendly sand-containing mist sealing materials without adding insect repellent and environmentally friendly microcapsules have basically no smoke suppression effect.

[0211] Table 3 Asphalt smoke test data

[0212]

[0213]

[0214] The above describes the specific implementation of the present invention in detail, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the various technical features being combined in any other suitable manner, and these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. An insect repellent and environmentally friendly sand-containing mist seal, characterized by: The insect repellent and environmentally friendly sand-containing fog seal layer comprises the following components in parts by mass: Asphalt: 35-70 parts; Water: 30-70 parts; Composite emulsifier: 2-8 parts; Defoaming agent: 0.5-3 parts; Acrylate: 5-30 parts; Photoinitiator: 0.1-1 part; Suspension: 20-40 parts; Fine sand: 20-45 parts; Insect repellent environmentally friendly microcapsules: 5-40 portions; The shell material of the insect repellent environmentally friendly microcapsule is a composite shell material including silicon dioxide / nano-tourmaline, and the core material includes one or more of pyrethroid compounds, carboxylic acid ester compounds, amide compounds, and plant extracts; the surface of the shell material is loaded with metal chelates.

2. The insect repellent and environmentally friendly sand-containing mist seal according to claim 1, characterized in that: The composite emulsifier includes a cationic emulsifier and an amphoteric emulsifier; the mass ratio of the cationic emulsifier to the amphoteric emulsifier is 1:(0.5-2.5); And / or, the cationic emulsifier includes one or more of amine salt surfactants having a carbon number greater than 8; preferably one or more of tetradecyl-dimethylpyridinium ammonium bromide, octadecylamidopropyl dimethyl dihydroxypropyl ammonium chloride, behenic acid amidopropyl dimethyl dihydroxypropyl ammonium chloride, hexadecylamidopropyl trimethyl ammonium chloride, dioctadecyl-methylbenzyl ammonium chloride, dodecyl dimethylbenzyl ammonium chloride, octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate, hexadecyl trimethyl ammonium bromide, and hexadecyl trimethyl ammonium chloride; And / or, the amphoteric emulsifier is a polyol-type surfactant; preferably one or more of fatty acid ethylene glycol esters, monoglycerides, pentaerythritol fatty acid esters, sorbitan fatty acid esters, and sucrose fatty acid esters.

3. The insect repellent and environmentally friendly sand-containing mist seal according to claim 1, characterized in that: The defoaming agent is one or more of sunflower oil, polydimethylsiloxane, eicosanol, and docosanol; And / or, the acrylate is one or more of methyl acrylate, ethyl acrylate, methyl 2-methacrylate, ethyl 2-methacrylate, n-butyl acrylate, isooctyl acrylate, isobutyl acrylate, methoxyethyl acrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, dimethylaminoethyl acrylate, oligoester acrylate, trimethylolpropane triacrylate, and polyurethane acrylate; And / or, the photoinitiator is one or more of (2,4,6-trimethylbenzoyl) diphenylphosphine oxide, ethyl 2,4,6-trimethylbenzoylphosphonate, 2-methyl-1-(4-methylthiophenyl)-2-morpholinyl-1-propanone, 2-isopropylthioxanthone, 4-dimethylamino-ethyl benzoate, 1-hydroxy-cyclohexyl-phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, benzoin dimethyl ether, methyl o-benzoylbenzoate, and 4-chlorobenzophenone; And / or, the suspending agent is one or more of bentonite, kaolin, carbon black, and talc; And / or, the fine sand particles are one or more of quartz sand, carborundum, corundum sand or basalt sand.

4. The insect repellent and environmentally friendly sand-containing mist seal layer according to claim 1, characterized in that: The diameter of the insect repellent and environmentally friendly microcapsule is 1-3 μm.

5. The insect repellent and environmentally friendly sand-containing mist seal according to claim 1, characterized in that: The mass ratio of the shell material to the core material of the insect repellent environmentally friendly microcapsule is 1:(0.8-2.0).

6. The insect repellent and environmentally friendly sand-containing mist seal layer according to claim 1, characterized in that: The pyrethroid compound has a carbon number of >18; preferably comprises one or more of cypermethrin, bifenthrin, flumethrin, cypermethrin, acepromazine, deltamethrin, and tetramethrin; And / or, the carbon number of the carboxylic acid ester is greater than 9; preferably one or more of ethyl butyl acetylaminopropionate, hexyl diethylcarbamoylformate, butyl 3-methylquinoline-4-carboxylate, dibutyl succinate, and dipropyl 2,5-pyridinedicarboxylate; And / or, the carbon number of the amide compound is greater than 10; preferably one or more of N,N-diethyl-3-methylbenzamide, ethylhexyl bicycloheptene dicarboximide, and N,N-diethylbenzamide; And / or, the carbon number of the plant extract is greater than 9; preferably, it is one or more of camphor and borneol.

7. The insect repellent and environmentally friendly sand-containing mist seal according to claim 1, characterized in that: The shell material is a silicon dioxide / nano-tourmaline composite shell material, wherein the mass ratio of silicon dioxide to nano-tourmaline is (1-5):

1.

8. The insect repellent and environmentally friendly sand-containing mist seal according to claim 1 or 7, characterized in that: The shell material surface is loaded with a metal chelate, wherein the metal is preferably copper; the metal chelating agent is preferably at least one of iminodiacetic acid, triethylenediamine, and nitrilotriacetic acid, and more preferably iminodiacetic acid; And / or: the surface of the shell material is loaded with metal chelates, and the metal loading accounts for 0.1wt%-10wt% of the total mass of the insect repellent environmentally friendly microcapsules.

9. The insect repellent and environmentally friendly sand-containing mist seal layer according to claim 1, characterized in that: The method for preparing the insect repellent environmentally friendly microcapsules is characterized by comprising the following steps: S1: mixing nano tourmaline powder, a surfactant and a solvent, modifying the mixture under stirring, washing the mixture after modification, and freeze-drying the mixture to obtain modified nano tourmaline powder; S2: stirring and mixing one or more of the pyrethroid compound, lipid compound, amide compound, and plant extract to obtain a core material mixed liquid; S3: adding the solvent and the modified nano-tourmaline powder obtained in step S1 to the core material mixed solution obtained in step S2, and stirring and mixing; S4: adding the shell material precursor to the reaction system in step S3, stirring and mixing, and obtaining a Pickering emulsion; S5: adjusting the pH value of the Pickering emulsion obtained in step S4 to 3-6, continuing stirring, and then aging, filtering, and freeze-drying to obtain an insect repellent and environmentally friendly microcapsule matrix; S6: dispersing the insect repellent and environmentally friendly microcapsule matrix obtained in step S5 in a methanol dispersion, then adding a coupling agent methanol solution, and adjusting the pH value of the reaction system to 9-11, treating under stirring, and then filtering, washing, and freeze-drying; S7: dispersing the solid powder obtained after freeze-drying in step S6 in a buffer, adding a chelating agent, treating under stirring, filtering, washing, and freeze-drying; S8: dispersing the solid powder obtained after freeze-drying in step S7 in a metal ion salt-formamide solution, treating under stirring, filtering, washing, and freeze-drying after the reaction is completed, to obtain insect repellent and environmentally friendly microcapsules.

10. The insect repellent and environmentally friendly sand-containing mist sealant according to claim 9, characterized in that: In step S1, the surfactant is a cationic surfactant, preferably at least one of hexadecyltrimethylammonium bromide, dodecyldimethylbenzylammonium chloride, and octadecyltrimethylammonium chloride, and more preferably hexadecyltrimethylammonium bromide; the solvent is an aprotic solvent with a boiling point > 100°C, preferably at least one of formamide, N,N-dimethylformamide, dimethylacetamide, and dimethylphosphoramide; And / or, the mass ratio of the nano-tourmaline powder to the surfactant is (3-10):1; the mass ratio of the solvent to the surfactant is (20-40):

1.

11. The insect repellent and environmentally friendly sand-containing mist sealant according to claim 9, wherein: In step S1, the stirring speed is 400-600 rpm; the modification temperature is 100-200° C., and the modification time is 4-8 hours; And / or, in step S2, the stirring speed is 400-600 rpm, the stirring temperature is 40-60° C., and the stirring time is 3-10 minutes; And / or, in step S3, the stirring speed is 400-600 rpm, the stirring temperature is 40-60° C., and the stirring time is 4-6 hours; And / or, in step S4, the stirring speed is 400-600 rpm, the stirring temperature is 40-60° C., and the stirring time is 4-6 hours; And / or, in step S5, the stirring speed is 400-600 rpm, the stirring temperature is 40-60° C., and the stirring time is 4-6 hours; And / or, in step S6, the stirring speed is 200-450 rpm; the treatment temperature is 40-60° C., and the treatment time is 4-6 hours; And / or, in step S7, the stirring speed is 200-450 rpm, the treatment temperature is 40-60° C., and the treatment time is 2-5 hours; And / or, in step S8, the stirring speed is 200-450 rpm, the treatment temperature is 100-180° C., and the treatment time is 2-5 hours.

12. The insect repellent and environmentally friendly sand-containing mist sealant according to claim 9, wherein: In step S3, the solvent is an aprotic solvent with a boiling point > 100°C, preferably at least one of formamide, N,N-dimethylformamide, dimethylacetamide, and dimethylphosphoramide.

13. The insect repellent and environmentally friendly sand-containing mist sealant according to claim 9, wherein: In step S3, the mass ratio of the core material mixture to the modified nano-tourmaline powder is (1-5):1; the mass ratio of the solvent to the modified nano-tourmaline powder is (20-40):

1.

14. The insect repellent and environmentally friendly sand-containing mist sealant according to claim 9, wherein: In step S4, the shell material precursor is a silicate compound, preferably at least one of methyl silicate, ethyl orthosilicate, tetraethyl orthosilicate, and butyl orthosilicate, and more preferably ethyl orthosilicate; And / or, the mass ratio of the core material mixed liquid to the shell material precursor is (0.5-2):

1.

15. The insect repellent and environmentally friendly sand-containing mist sealant according to claim 9, wherein: In step S6, the coupling agent is a silane coupling agent, preferably at least one of 3-chloropropyltrimethylsilane, (dichloromethyl)trimethylsilane, (trichloromethyl)trimethylsilane, and (chlorodifluoromethyl)trimethylsilane, and more preferably 3-chloropropyltrimethylsilane; the coupling agent methanol solution is prepared from the coupling agent and methanol, and the mass ratio of methanol to the coupling agent is (10-15):

1.

16. The insect repellent and environmentally friendly sand-containing mist sealant according to claim 9, wherein: In step S6, the mass ratio of the methanol dispersion to the insect repellent environmentally friendly microcapsule matrix is ​​(10-20):1; the mass ratio of the insect repellent environmentally friendly microcapsule matrix to the coupling agent methanol solution is (1-15):

1.

17. The insect repellent and environmentally friendly sand-containing mist sealant according to claim 9, wherein: The buffer in step S7 is one of a phosphate buffer and a carbonate buffer, preferably a carbonate buffer; the pH value of the buffer is 9-11; And / or, in step S7, the mass ratio of the buffer solution to the solid powder obtained after freeze-drying in step S6 is (15-20):

1.

18. The insect repellent and environmentally friendly sand-containing fog sealant according to claim 9, wherein: in step S7, the ligand tooth number of the chelating agent is greater than 2, preferably iminodiacetic acid, triethylenediamine, nitrilotriacetic acid, and more preferably iminodiacetic acid; And / or, in step S7, the mass ratio of the solid powder obtained after freeze-drying in step S6 to the chelating agent is (10-15):

1.

19. The insect repellent and environmentally friendly sand-containing mist sealant according to claim 9, wherein: In step S8, the metal ion salt is preferably a copper ion salt, and more preferably anhydrous copper sulfate; in the metal ion salt-formamide solution, the mass ratio of the metal ion salt to formamide is (0.5-1.5):1; the mass ratio of the metal ion salt-formamide solution to the solid powder obtained after drying in step S7 is (5-15):

1.

20. The method for preparing the insect repellent and environmentally friendly sand-containing fog seal layer according to any one of claims 1 to 19, characterized in that: The steps include: P1: Preparation of composite emulsifier; P2: Stir and mix water and part of the composite emulsifier prepared in step P1, adjust the pH value, and obtain a soap solution; P3: Stir and mix the acrylate compound and the photoinitiator to obtain a photocuring agent; P4: After heating the asphalt and the soap solution obtained in step P2 respectively, shearing them to obtain emulsified asphalt; P5: Add the remaining part of the composite emulsifier prepared in step P1 to the emulsified asphalt obtained in step P4, and stir to mix; P6: Add defoaming agent to the reaction system of step P5 and stir to mix; P7: Add a suspending agent to the reaction system of step P6 and stir to mix; P8: Add insect repellent and environmentally friendly microcapsules to the reaction system of step P7 and stir to mix; P9: Add the photocuring agent prepared in step P3 to the reaction system in step P8, and stir to mix; P10: Add fine sand particles to the reaction system of step P9, stir and mix, and obtain an insect repellent and environmentally friendly sand-containing mist seal layer.

21. The method according to claim 20, characterized in that: In step P2, the stirring speed is 100-600 rpm, the stirring temperature is 50-90° C., and the stirring time is 5-20 minutes; And / or, in step P3, the stirring speed is 100-600 rpm, the stirring temperature is 40-90° C., and the stirring time is 5-20 minutes; And / or, in step P5, the stirring speed is 100-600 rpm, the stirring temperature is 30-90° C., and the stirring time is 2-20 minutes; And / or, in step P6, the stirring speed is 100-600 rpm, the stirring temperature is 30-90° C., and the stirring time is 2-20 minutes; And / or, in step P7, the stirring speed is 700-1600 rpm, the stirring temperature is 30-90° C., and the stirring time is 10-50 minutes; And / or, in step P8, the stirring speed is 300-500 rpm, the stirring temperature is 30-90° C., and the stirring time is 10-50 minutes; And / or, in step P9, the stirring speed is 300-500 rpm, the stirring temperature is 30-90° C., and the stirring time is 10-50 minutes; And / or, in step P10, the stirring speed is 100-600 rpm, the stirring temperature is 40-90° C., and the stirring time is 2-20 minutes.

22. The method according to claim 20, characterized in that: In step P2, the pH value can be adjusted by using an acetic acid aqueous solution, and the pH value is adjusted to 2-4.

23. The method according to claim 20, characterized in that: In step P4, the shearing is performed 3-5 times; the shearing rate of each time is 3000-5000 rpm, and the time of each shearing is 2-20 minutes.

24. The method according to claim 20, characterized in that: The mass ratio of the composite emulsifier added in step P5 to the composite emulsifier added in step P2 is 1:2-5.

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