CN110746838A - High-stability asphalt separant - Google Patents
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Abstract
The invention discloses a high-stability asphalt separant, belonging to the technical field of asphalt materials for road engineering. The invention uses swim bladder and duck intestine to carry out multiple treatment, dissolves out macromolecular protein components to carry out polymerization, provides barrier stability, can generate components of various active groups through biological metabolism for fermentation treatment of residues, and can carry out chemical bonding with other components, thereby further improving the high temperature resistance and storage stability. Organic silicon and inorganic titanium dioxide are dispersed in a multi-layer manner in phosphogypsum, the bonding strength among the components is improved, and linseed oil and epoxy resin containing unsaturated acid are added in the grinding and activating process of montmorillonite, so that high-temperature stability can be provided in an auxiliary manner. The invention solves the problems of poor high temperature resistance and poor storage stability of the currently common asphalt separant.
Description
Technical Field
The invention belongs to the technical field of road engineering asphalt materials, and particularly relates to a high-stability asphalt separant.
Background
Asphalt pavements have been increasingly used for high-grade highways due to their advantages of high flatness, low noise, and comfort in driving. Asphalt is a typical viscoelastic material, has good adhesiveness, acts as a binder in an asphalt pavement material, and part of asphalt mixture adheres to transportation equipment and rolling machinery during transportation and rolling. The asphalt mixture adhered to the transportation equipment is not easy to clean, the equipment loss and labor cost are increased in the cleaning process, and part of the asphalt mixture is wasted; in the process of asphalt pavement construction, the driving comfort, the mechanical property and the service cycle of the asphalt concrete pavement are directly influenced by the quality of the rolling result. The asphalt mixture adhered to the rolling equipment can seriously affect the rolling effect of the asphalt pavement, destroy an asphalt film of the pavement and reduce the compactness, the flatness and the mechanical property of the asphalt pavement, so that the improvement of the rolling quality of the asphalt pavement is an important factor for ensuring high-quality asphalt pavement.
Release agents are functional materials interposed between the mold and the sample, a type of processing aid that prevents the sample from bonding to the mold by applying an interface film to the surface of two objects that are easily bonded to each other. The release agent is used as a material coated on the surface of the die, has lower surface energy, can form a film layer with micron-sized thickness and thermal stability on the surface of the die, can enable a formed sample to be quickly and easily separated, and has small influence on the sample by the components of the release agent.
In the construction of asphalt pavements, asphalt in hot asphalt mixtures, particularly modified asphalt mixtures, is sticky to construction equipment, and the construction quality of the pavements is seriously affected. In the prior asphalt mixture transportation and asphalt pavement construction, diesel oil, rape oil and the like are generally used as separants in rubber-tyred road rollers and material transportation carriage plates, and the separants have a remarkable dissolving effect on asphalt in the asphalt mixture, remain on the asphalt pavement and have a great negative effect on the pavement performance of the asphalt pavement. Particularly, the phenomenon that a road surface asphalt film is easy to peel off and road surface aggregates are easy to expose in a short time due to the dilution influence of the oily separant on the road surface asphalt is caused, so that the generation of early water damage of the asphalt pavement is accelerated; for a steel wheel road roller, a water spraying method is generally adopted to prevent wheel adhesion, a large amount of water is sprayed to reduce the surface temperature of a mixture quickly, and particularly during low-temperature construction, the compactness of the asphalt mixture is seriously influenced, so that the road performance is influenced. The asphalt mixture is a mixed material, mainly composed of asphalt, coarse aggregate, fine aggregate, filler, and optionally modifier such as polymer, mineral filler or fiber. The asphalt is used as cementing material to bond the coarse and fine aggregate and the filler together to form the asphalt concrete. The asphalt mixture is subjected to the working procedures of mixing, transportation, paving, rolling and the like in a mixing plant in the preparation and construction processes. Asphalt is prone to adhere to mechanical equipment in contact with the asphalt at high temperatures. Such as asphalt feed inlets of mixing equipment, asphalt discharge and transfer devices, transport vehicles, pavers and compactors, are prone to asphalt sticking, leading to blockages and build-up, reducing the workability of the machine and the quality of the road. In order to prevent the asphalt mixture from adhering to the construction machinery, water spraying or diesel oil spraying is generally used. The sprinkling seriously reduces the temperature of the asphalt mixture, which causes the compaction of the mixture to be poor and the water stability of the asphalt mixture to be damaged. In order to meet the requirement of compactness, the temperature of the asphalt mixture needs to be increased or the rolling frequency needs to be increased, which increases the energy consumption of asphalt mixture construction and further leads to cost increase. The conventional asphalt separant has the problems of poor high-temperature resistance and poor storage stability.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the problems of poor high temperature resistance and storage stability of the conventional asphalt separant, the high-stability asphalt separant is provided.
In order to solve the technical problems, the invention adopts the following technical scheme:
a high-stability asphalt separant comprises the following components: 3-7 parts of castor oil, 1-4 parts of fatty acid diethanolamide, 1-4 parts of sodium benzoate, 2-5 parts of an emulsifier, 30-50 parts of a composite high-temperature-resistant stabilizing material and 12-25 parts of a phosphogypsum treatment material.
The preparation method of the composite high-temperature-resistant stabilizing material comprises the following steps:
(1) at the temperature of 25-35 ℃, according to the mass ratio of 3: 1: 12-20, mixing swimming bladder, duck intestine and sodium bicarbonate solution, homogenizing, heating to 65-75 ℃, keeping the temperature, stirring, centrifuging, collecting a centrifugate and a centrifugal mixed solution, and taking the centrifugal mixed solution according to a mass ratio of 15-25: 4: 3: 0.2, adding polyvinyl alcohol, itaconic acid and an initiator, mixing, and keeping the temperature at 65-75 ℃ to obtain a polymer material, wherein the polymer material comprises, by weight, 20-30 parts of a centrifuge, 1-4 parts of pretreated activated sludge, 12-20 parts of yeast extract, 3-6 parts of glucose, 5-8 parts of glycerol and 0.2-0.5 part of Na2HPO4Mixing 4-8 parts of casein and 350-550 parts of water, shaking and shaking the mixture at the temperature of 28-33 ℃, culturing the mixture by a shaking table, discharging the mixture, and sterilizing the mixture to obtain the sterilized mixtureAnd (3) taking the sterilized material, and concentrating under reduced pressure to obtain a concentrate, wherein the concentrate is prepared from the following components in a mass ratio of 7-12: 5: 1, adding a polymerization material and auxiliary materials, mixing and stirring to obtain a compound material;
(2) at the temperature of 30-45 ℃, according to the mass ratio of 10-15: 1: 2-4: and 40, mixing and stirring the compound material, nitrocellulose, trimethyl methoxysilane and water, heating to 55-70 ℃, stirring, adding pretreated montmorillonite accounting for 12-20% of the mass of the compound material and epoxy resin accounting for 6-10% of the mass of the compound material, mixing, shearing, dispersing, and evaporating under reduced pressure to obtain the composite high-temperature-resistant stabilizing material.
The initiator in the step (1): according to the mass ratio of 1: and 2-5, mixing sodium sulfite and sodium persulfate to obtain the initiator.
The auxiliary materials in the step (1) are as follows: according to the mass ratio of 3-7: 2: 1 mixing hydroxyapatite, glycerol and dimethyl silicone oil to obtain the auxiliary material.
The activated sludge pretreatment in the step (1) comprises the following steps: according to the mass ratio of 4: 1: and 18-25, mixing and stirring the activated sludge, urea and an ethanol solution, soaking at room temperature, and evaporating under reduced pressure to obtain the pretreated activated sludge.
The pretreatment of montmorillonite in the step (2): according to the mass ratio of 7-13: 3: 0.4 mixing montmorillonite, oleum Lini and silane coupling agent KH-550 to obtain pretreated montmorillonite.
The preparation of the phosphogypsum treatment material comprises the following steps: at the temperature of 70-85 ℃, according to the mass ratio of 1: 6-10, mixing the phosphogypsum and the acidizing oxidation liquid, stirring for 1-3 hours under the condition of heat preservation, filtering, and taking a filter cake according to the mass ratio of 7-12: 3: 1: and 4, adding trimethyl siloxane, magnesium stearate and linseed oil, performing ball milling to obtain a ball grinding material, mixing 20-30 parts of ball milling material, 15-25 parts of polyvinyl alcohol, 3-7 parts of tetrabutyl titanate and 6-10 parts of titanyl sulfate acid solution according to parts by weight, adjusting pH, standing, filtering, collecting and calcining a filter cake, collecting and pulverizing and sieving calcined material, collecting and sieving particles according to the mass ratio of 5-8: 1, adding an additive and mixing to obtain the phosphogypsum treatment material.
The acidification and oxidation liquid: according to the mass ratio of 10-15: and 3, mixing the hydrochloric acid solution and the potassium permanganate solution to obtain the acidified oxidation solution.
The additive is as follows: according to the mass ratio of 1: and 12-20, mixing the hexacyclic ring stone with a citric acid solution, standing at room temperature, filtering, and collecting filtrate to obtain the additive.
The emulsifier is as follows: according to the mass ratio of 2-5: 1, mixing Tween-80 and Span-60 to obtain the emulsifier.
Compared with other methods, the method has the beneficial technical effects that:
(1) the invention takes swim bladder and duck intestine as raw materials, homogenizes and thermally mixes and degreases through sodium bicarbonate solution, dissolves out macromolecular protein components, then prepares a polymerization material through the interaction with polyvinyl alcohol and itaconic acid, improves the barrier stability, simultaneously adds trimethyl methoxy silane to increase the adhesive force and assist in improving the storage stability, mixes and ferments the residues of the swim bladder and duck intestine and pretreated activated sludge, destroys the internal structure of the residues through microbial metabolism, generates micromolecular fiber, colloid and the like, obtains more components containing carboxyl, amino and the like, can chemically bond with the surface layer of montmorillonite activated by a subsequent coupling agent, further improves the structural stability, adds in linseed oil containing unsaturated acid and epoxy resin in the grinding and activating process of the montmorillonite, and also can assist in providing high-temperature stability, the high temperature resistance and the storage stability of the asphalt separant are improved;
(2) the invention carries out acidification and oxidation treatment on phosphogypsum, then utilizes trimethyl siloxane, magnesium stearate and linseed oil to mix and grind, reduces the fineness and improves the surface activity of the phosphogypsum, the addition of the trimethyl siloxane can also increase the bonding degree among polymers and increase the cationic density of the polymers, cationic polymers are formed on the surface of the polymers, metal anions in the subsequent titanyl sulfate solution are captured, polyvinyl alcohol is used for activating ball grinding materials, added tetrabutyl titanate is mixed in the polymers, the captured titanium-containing anions can generate titanium dioxide dispersed on different levels on the surface and in the interior after calcination, the cationic polymers can be decomposed under the action of high temperature to generate gas to mask polar groups of the phosphogypsum treatment material, simultaneously the diffusion of the gas generates pores on the surface, and the citric acid solution used for combining hexacyclic stone is used for diffusing the prepared additive of negative ion liquid, the bonding strength with metal ions can be improved, so that the formed film layer has better high-temperature resistance stability, and the storage stability can be obviously improved;
(3) the invention carries out multiple treatment on swim bladder and duck intestine, dissolves out macromolecular protein components for polymerization, provides barrier stability, can generate components of various active groups through biological metabolism for fermentation treatment of residues, can be chemically bonded with other components, further improves the high temperature resistance and storage stability, disperses organic silicon and inorganic component titanium dioxide in multiple layers for phosphogypsum, improves the bonding strength among the components, and improves the obtained stability.
Detailed Description
Initiator: according to the mass ratio of 1: and 2-5, mixing sodium sulfite and sodium persulfate to obtain the initiator.
Pretreating activated sludge: according to the mass ratio of 4: 1: 18-25 taking activated sludge, urea and 60% ethanol solution in volume fraction, mixing and stirring, soaking at room temperature for 5-8 h, and evaporating under reduced pressure to 20-35% of the original volume to obtain the pretreated activated sludge.
Auxiliary materials: according to the mass ratio of 3-7: 2: 1 mixing hydroxyapatite, glycerol and dimethyl silicone oil to obtain the auxiliary material.
Preprocessing montmorillonite: according to the mass ratio of 7-13: 3: 0.4 mixing montmorillonite, oleum Lini and silane coupling agent KH-550 to obtain pretreated montmorillonite.
Acidifying the oxidizing solution: according to the mass ratio of 10-15: and 3, mixing a hydrochloric acid solution with the mass fraction of 15% and a potassium permanganate solution with the concentration of 1mol/L to obtain the acidified oxidation solution.
Additive: according to the mass ratio of 1: 12-20, mixing the hexacyclic ring stone with a citric acid solution with the mass fraction of 12%, standing for 2-4 h at room temperature, filtering, and collecting filtrate to obtain the additive.
Emulsifier: according to the mass ratio of 2-5: 1, mixing Tween-80 and Span-60 to obtain the emulsifier.
The preparation method of the composite high-temperature resistant stabilizing material comprises the following steps:
(1) at the temperature of 25-35 ℃, according to the mass ratio of 3: 1: 12-20, taking swim bladders, duck intestines and a sodium bicarbonate solution with the mass fraction of 20%, mixing and homogenizing, heating to 65-75 ℃, preserving heat, stirring for 35-60 min, moving to a centrifugal machine, centrifuging for 10-15 min at 3000-5000 r/min, collecting a centrifugate and a centrifugal mixed solution, and taking the centrifugal mixed solution according to the mass ratio of 15-25: 4: 3: 0.2, adding polyvinyl alcohol, itaconic acid and an initiator, mixing, keeping the temperature at 65-75 ℃, and mixing for 35-60 min to obtain a polymer material, wherein the polymer material comprises, by weight, 20-30 parts of a centrifuge, 1-4 parts of pretreated activated sludge, 12-20 parts of yeast extract, 3-6 parts of glucose, 5-8 parts of glycerol and 0.2-0.5 part of Na2HPO4Mixing 4-8 parts of casein and 350-550 parts of water in a fermentation tank, shaking and shaking the mixture for 4-6 days at 28-33 ℃ at 180-220 r/min, discharging, carrying out heat preservation and sterilization at 121 ℃ for 12-20 min to obtain a sterilization material, carrying out vacuum concentration on the sterilization material to 30-45% of the original volume to obtain a concentrate, and carrying out mass ratio 7-12: 5: 1, adding a polymerization material and auxiliary materials, mixing, and magnetically stirring for 40-60 min at a speed of 500-800 r/min to obtain a compound material;
(2) at the temperature of 30-45 ℃, according to the mass ratio of 10-15: 1: 2-4: 40, mixing the compound material, nitrocellulose, trimethyl methoxysilane and water, stirring for 40-60 min at a speed of 400-700 r/min, heating to 55-70 ℃, stirring for 25-50 min at a speed of 500-800 r/min, adding pretreated montmorillonite accounting for 12-20% of the mass of the compound material and epoxy resin accounting for 6-10% of the mass of the compound material, mixing, shearing and dispersing for 15-25 min at a speed of 2500-4000 r/min, and evaporating under reduced pressure to 25-45% of the original volume to obtain the composite high-temperature resistant stabilizing material.
Preparing a phosphogypsum treatment material: at the temperature of 70-85 ℃, according to the mass ratio of 1: 6-10, mixing the phosphogypsum and the acidizing oxidation liquid, stirring for 1-3 hours under the condition of heat preservation, filtering, and taking a filter cake according to the mass ratio of 7-12: 3: 1: and 4, adding trimethylsiloxane, magnesium stearate and linseed oil into a ball mill, and carrying out ball milling for 1-3 hours at a speed of 350-550 r/min to obtain a ball milling material, taking 20-30 parts by weight of ball milling material, 15-25 parts by weight of polyvinyl alcohol, 3-7 parts by weight of tetrabutyl titanate and 6-10 parts by weight of titanyl sulfate acid solution with a mass fraction of 25% to mix in a reaction kettle, adjusting the pH to 5.8-6.4 by using HCl solution with a concentration of 2mol/L, standing for 2-4 hours at room temperature, filtering, collecting a filter cake, calcining for 1-3 hours at 650-750 ℃, collecting calcined material, crushing in a crusher, sieving with a 100-mesh sieve, collecting sieved particles, and mixing the particles according to a mass ratio of 5-8: 1, adding an additive and mixing to obtain the phosphogypsum treatment material.
A high-stability asphalt separant comprises the following components in parts by weight: 3-7 parts of castor oil, 1-4 parts of fatty acid diethanolamide, 1-4 parts of sodium benzoate, 2-5 parts of an emulsifier, 30-50 parts of a composite high-temperature-resistant stabilizing material and 12-25 parts of a phosphogypsum treatment material.
Example 1
Initiator: according to the mass ratio of 1: and 2, mixing sodium sulfite and sodium persulfate to obtain the initiator.
Pretreating activated sludge: according to the mass ratio of 4: 1: 18 mixing and stirring the activated sludge, urea and 60% ethanol solution by volume fraction, soaking for 5h at room temperature, and evaporating under reduced pressure to 20% of the original volume to obtain the pretreated activated sludge.
Auxiliary materials: according to the mass ratio of 3: 2: 1 mixing hydroxyapatite, glycerol and dimethyl silicone oil to obtain the auxiliary material.
Preprocessing montmorillonite: according to the mass ratio of 7: 3: 0.4 mixing montmorillonite, oleum Lini and silane coupling agent KH-550 to obtain pretreated montmorillonite.
Acidifying the oxidizing solution: according to the mass ratio of 10: and 3, mixing a hydrochloric acid solution with the mass fraction of 15% and a potassium permanganate solution with the concentration of 1mol/L to obtain the acidified oxidation solution.
Additive: according to the mass ratio of 1: 12 mixing the hexacyclic ring stone with a citric acid solution with the mass fraction of 12%, standing for 2 hours at room temperature, filtering, and collecting the filtrate to obtain the additive.
Emulsifier: according to the mass ratio of 2: 1, mixing Tween-80 and Span-60 to obtain the emulsifier.
The preparation method of the composite high-temperature resistant stabilizing material comprises the following steps:
(1) at 25 ℃, according to the mass ratio of 3: 1: 12, taking swim bladder, duck intestine and 20% sodium bicarbonate solution by mass percent, mixing and homogenizing, heating to 65 ℃, preserving heat, stirring for 35min, moving to a centrifugal machine, centrifuging for 10min at 3000r/min, collecting a centrifugate and a centrifugal mixed solution, taking the centrifugal mixed solution according to the mass ratio of 15: 4: 3: 0.2 adding polyvinyl alcohol, itaconic acid and initiator, mixing, keeping the temperature at 65 ℃ and mixing for 35min to obtain a polymer material, and taking 20 parts of centrifugate and 1 part of pretreatment activity according to the parts by weightSludge, 12 parts of yeast extract, 3 parts of glucose, 5 parts of glycerol and 0.2 part of Na2HPO4Mixing 4 parts of casein and 350 parts of water in a fermentation tank, shaking and culturing for 4 days at 28 ℃ and 180r/min, discharging, carrying out heat preservation and sterilization at 121 ℃ for 12min to obtain a sterilization material, carrying out reduced pressure concentration on the sterilization material to 30% of the original volume to obtain a concentrate, and taking the concentrate according to the mass ratio of 7: 5: 1, adding a polymerization material and auxiliary materials, mixing, and magnetically stirring for 40min at the speed of 500r/min to obtain a compound material;
(2) at 30 ℃, according to the mass ratio of 10: 1: 2: 40, mixing the compound material, nitrocellulose, trimethyl methoxylsilane and water, stirring for 40min at 400r/min, heating to 55 ℃, stirring for 25min at 500r/min, adding pretreated montmorillonite accounting for 12% of the mass of the compound material and epoxy resin accounting for 6% of the mass of the compound material, mixing, shearing and dispersing for 15min at 2500r/min, and evaporating under reduced pressure to 25% of the original volume to obtain the composite high-temperature-resistant stabilizing material.
Preparing a phosphogypsum treatment material: at 70 ℃, according to the mass ratio of 1: 6, mixing the phosphogypsum and the acidified oxidizing solution, stirring for 1 hour under the condition of heat preservation, filtering, and taking a filter cake according to the mass ratio of 7: 3: 1: and 4, adding trimethylsiloxane, magnesium stearate and linseed oil into a ball mill, carrying out ball milling for 1h at the speed of 350r/min to obtain a ball milling material, mixing 20 parts of the ball milling material, 15 parts of polyvinyl alcohol, 3 parts of tetrabutyl titanate and 6 parts of titanyl sulfate acid solution with the mass fraction of 25% in a reaction kettle according to the parts by weight, adjusting the pH to 5.8 by using HCl solution with the concentration of 2mol/L, standing for 2h at room temperature, filtering, collecting a filter cake, calcining for 1h at the temperature of 650 ℃, collecting the calcined material, crushing in a crusher, sieving by a sieve of 100 meshes, collecting sieved particles according to the mass ratio of 5: 1, adding an additive and mixing to obtain the phosphogypsum treatment material.
A high-stability asphalt separant comprises the following components in parts by weight: 3 parts of castor oil, 1 part of fatty acid diethanolamide, 1 part of sodium benzoate, 2 parts of emulsifier, 30 parts of composite high-temperature-resistant stabilizing material and 12 parts of phosphogypsum treating material.
Example 2
Initiator: according to the mass ratio of 1: and 3, mixing sodium sulfite and sodium persulfate to obtain the initiator.
Pretreating activated sludge: according to the mass ratio of 4: 1: 21 mixing and stirring the activated sludge, urea and 60% ethanol solution by volume fraction, soaking at room temperature for 7h, and evaporating under reduced pressure to 27% of the original volume to obtain the pretreated activated sludge.
Auxiliary materials: according to the mass ratio of 5: 2: 1 mixing hydroxyapatite, glycerol and dimethyl silicone oil to obtain the auxiliary material.
Preprocessing montmorillonite: according to the mass ratio of 10: 3: 0.4 mixing montmorillonite, oleum Lini and silane coupling agent KH-550 to obtain pretreated montmorillonite.
Acidifying the oxidizing solution: according to the mass ratio of 12: and 3, mixing a hydrochloric acid solution with the mass fraction of 15% and a potassium permanganate solution with the concentration of 1mol/L to obtain the acidified oxidation solution.
Additive: according to the mass ratio of 1: and 16, mixing the hexacyclic ring stone with a citric acid solution with the mass fraction of 12%, standing for 3 hours at room temperature, filtering, and collecting filtrate to obtain the additive.
Emulsifier: according to the mass ratio of 4: 1, mixing Tween-80 and Span-60 to obtain the emulsifier.
The preparation method of the composite high-temperature resistant stabilizing material comprises the following steps:
(1) at 30 ℃, according to the mass ratio of 3: 1: 16, taking swim bladder, duck intestine and 20% sodium bicarbonate solution by mass percent, mixing and homogenizing, heating to 70 ℃, keeping the temperature and stirring for 47min, moving to a centrifugal machine, centrifuging for 12min at 4000r/min, collecting a centrifugate and a centrifugal mixed solution, taking the centrifugal mixed solution according to the mass ratio of 20: 4: 3: 0.2 adding polyvinyl alcohol, itaconic acid and initiator, mixing, keeping the temperature at 70 ℃ for 47min to obtain a polymer material, and taking 25 parts of centrifugate, 3 parts of pretreated activated sludge, 16 parts of yeast extract, 5 parts of glucose, 6 parts of glycerol and 0.3 part of Na according to parts by weight2HPO4Mixing 6 parts of casein and 450 parts of water in a fermentation tank, shaking and culturing for 5 days at 30 ℃ and 200r/min, discharging, carrying out heat preservation and sterilization at 121 ℃ for 16min to obtain a sterilization material, carrying out reduced pressure concentration on the sterilization material to 37% of the original volume to obtain a concentrate, and taking the concentrate according to the mass ratio of 10: 5: 1, adding a polymerization material and auxiliary materials, mixing, and magnetically stirring for 50min at 650r/min to obtain a compound material;
(2) at 37 ℃, according to the mass ratio of 12: 1: 3: 40 mixing the compound material, nitrocellulose, trimethyl methoxylsilane and water, stirring for 50min at 550r/min, heating to 62 ℃, stirring for 37min at 650r/min, adding pretreated montmorillonite accounting for 16% of the mass of the compound material and epoxy resin accounting for 8% of the mass of the compound material, mixing, shearing and dispersing for 20min at 3500r/min, and evaporating under reduced pressure to 35% of the original volume to obtain the composite high-temperature-resistant stabilizing material.
Preparing a phosphogypsum treatment material: at 77 ℃, according to the mass ratio of 1: 8, mixing the phosphogypsum and the acidified oxidizing solution, stirring for 2 hours under the condition of heat preservation, filtering, and taking a filter cake according to the mass ratio of 10: 3: 1: and 4, adding trimethylsiloxane, magnesium stearate and linseed oil into a ball mill, carrying out ball milling for 2 hours at the speed of 450r/min to obtain a ball milling material, mixing 25 parts of ball milling material, 20 parts of polyvinyl alcohol, 5 parts of tetrabutyl titanate and 8 parts of titanyl sulfate acid solution with the mass fraction of 25% in a reaction kettle according to the parts by weight, regulating the pH value to 6.1 by using HCl solution with the concentration of 2mol/L, standing for 3 hours at room temperature, filtering, collecting a filter cake, calcining for 2 hours at 700 ℃, collecting the calcined material, crushing the calcined material in a crusher, sieving by a sieve with 100 meshes, collecting sieved particles according to the mass ratio of 7: 1, adding an additive and mixing to obtain the phosphogypsum treatment material.
A high-stability asphalt separant comprises the following components in parts by weight: 5 parts of castor oil, 3 parts of fatty acid diethanolamide, 2 parts of sodium benzoate, 3 parts of an emulsifier, 40 parts of a composite high-temperature-resistant stabilizing material and 18 parts of a phosphogypsum treating material.
Example 3
Initiator: according to the mass ratio of 1: 5 mixing sodium sulfite and sodium persulfate to obtain the initiator.
Pretreating activated sludge: according to the mass ratio of 4: 1: 25 mixing and stirring the activated sludge, urea and 60% ethanol solution by volume fraction, soaking at room temperature for 8h, and evaporating under reduced pressure to 35% of the original volume to obtain the pretreated activated sludge.
Auxiliary materials: according to the mass ratio of 7: 2: 1 mixing hydroxyapatite, glycerol and dimethyl silicone oil to obtain the auxiliary material.
Preprocessing montmorillonite: according to the mass ratio of 13: 3: 0.4 mixing montmorillonite, oleum Lini and silane coupling agent KH-550 to obtain pretreated montmorillonite.
Acidifying the oxidizing solution: according to the mass ratio of 15: and 3, mixing a hydrochloric acid solution with the mass fraction of 15% and a potassium permanganate solution with the concentration of 1mol/L to obtain the acidified oxidation solution.
Additive: according to the mass ratio of 1: and 20, mixing the hexacyclic ring stone with a citric acid solution with the mass fraction of 12%, standing for 4 hours at room temperature, filtering, and collecting filtrate to obtain the additive.
Emulsifier: according to the mass ratio of 5: 1, mixing Tween-80 and Span-60 to obtain the emulsifier.
The preparation method of the composite high-temperature resistant stabilizing material comprises the following steps:
(1) at 35 ℃, according to the mass ratio of 3: 1: 20, taking swim bladder, duck intestine and 20% sodium bicarbonate solution by mass fraction, mixing and homogenizing, heating to 75 ℃, keeping the temperature and stirring for 60min, moving to a centrifugal machine, centrifuging for 15min at 5000r/min, collecting a centrifugate and a centrifugal mixed solution, taking the centrifugal mixed solution according to the mass ratio of 25: 4: 3: 0.2 adding polyvinyl alcohol, itaconic acid and initiator, mixing, keeping the temperature at 75 ℃ for 60min to obtain a polymer material, and taking 30 parts of centrifugate, 4 parts of pretreated activated sludge, 20 parts of yeast extract, 6 parts of glucose, 8 parts of glycerol and 0.5 part of Na according to parts by weight2HPO48 parts of casein and 550 parts of water are mixed in a fermentation tank, shake table cultivation is carried out for 6 days at 33 ℃ and 220r/min, discharging is carried out, heat preservation and sterilization are carried out for 20min at 121 ℃, a sterilization material is obtained, the sterilization material is taken, reduced pressure concentration is carried out to 45 percent of the original volume, a concentrate is obtained, and the concentrate is taken according to the mass ratio of 12: 5: 1, adding a polymerization material and auxiliary materials, mixing, and magnetically stirring for 60min at the speed of 800r/min to obtain a compound material;
(2) at 45 ℃, mixing the components in a mass ratio of 15: 1: 4: 40 mixing the compound material, nitrocellulose, trimethyl methoxy silane and water, stirring for 60min at 700r/min, heating to 70 ℃, stirring for 50min at 800r/min, adding pretreated montmorillonite accounting for 20% of the mass of the compound material and epoxy resin accounting for 10% of the mass of the compound material, mixing, shearing and dispersing for 25min at 4000r/min, and evaporating under reduced pressure to 45% of the original volume to obtain the composite high-temperature-resistant stabilizing material.
Preparing a phosphogypsum treatment material: at 85 ℃, according to the mass ratio of 1: 10, mixing the phosphogypsum and the acidified oxidizing solution, stirring for 3 hours under the condition of heat preservation, filtering, and taking a filter cake according to the mass ratio of 12: 3: 1: and 4, adding trimethylsiloxane, magnesium stearate and linseed oil into a ball mill, carrying out ball milling for 3 hours at 550r/min to obtain a ball milling material, mixing 30 parts of ball milling material, 25 parts of polyvinyl alcohol, 7 parts of tetrabutyl titanate and 10 parts of titanyl sulfate acid solution with the mass fraction of 25% in a reaction kettle according to parts by weight, regulating the pH to 6.4 by using HCl solution with the concentration of 2mol/L, standing for 4 hours at room temperature, filtering, collecting a filter cake, calcining for 3 hours at 750 ℃, collecting the calcined material, crushing the calcined material in a crusher, sieving with a 100-mesh sieve, collecting sieved particles according to the mass ratio of 8: 1, adding an additive and mixing to obtain the phosphogypsum treatment material.
A high-stability asphalt separant comprises the following components in parts by weight: 7 parts of castor oil, 4 parts of fatty acid diethanolamide, 4 parts of sodium benzoate, 5 parts of an emulsifier, 50 parts of a composite high-temperature-resistant stabilizing material and 25 parts of a phosphogypsum treating material.
Comparative example 1: the procedure was essentially the same as in example 1 except that the composite refractory stabilizer was absent.
Comparative example 2: essentially the same procedure as in example 1 except that the phosphogypsum treatment is absent.
Comparative example 3: asphalt separant produced by a company in the tobacco market.
The high-stability type asphalt release agent obtained in the examples and the comparative examples is tested according to JTG F40-2004, and the test results are shown in Table 1:
table 1:
| test items | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Standard viscosity/s at 25 DEG C | 24.1 | 22.6 | 21.7 | 19.3 | 17.4 | 15.3 |
| Density g/m at 25 DEG C3 | 0.962 | 0.935 | 0.854 | 0.796 | 0.638 | 0.513 |
| Storage stability of more than 30 days | Not layering | Not layering | Not layering | Not layering | Layering | Layering |
| Highest temperature/DEG C resistance | 67.1 | 65.3 | 60.1 | 55.8 | 45.9 | 38.4 |
In conclusion, the high-stability asphalt separant obtained by the invention has the advantages of high temperature resistance, good separation effect and good storage stability. Compared with the products sold on the market, the product has better effect and is worth popularizing.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as the subject matter of the invention is to be construed in all aspects and as broadly as possible, and all changes, equivalents and modifications that fall within the true spirit and scope of the invention are therefore intended to be embraced therein.
Claims (9)
1. A high-stability asphalt separant comprises the following components in parts by weight: 3-7 parts of castor oil, 1-4 parts of fatty acid diethanolamide, 1-4 parts of sodium benzoate and 2-5 parts of an emulsifier, and is characterized by further comprising the following components in parts by weight: 30-50 parts of composite high-temperature-resistant stabilizing material and 12-25 parts of phosphogypsum treating material.
2. The high-stability asphalt release agent according to claim 1, wherein the preparation method of the composite high-temperature-resistant stabilizing material comprises the following steps:
(1) at the temperature of 25-35 ℃, according to the mass ratio of 3: 1: 12-20, mixing swimming bladder, duck intestine and sodium bicarbonate solution, homogenizing, heating to 65-75 ℃, keeping the temperature, stirring, centrifuging, collecting a centrifugate and a centrifugal mixed solution, and taking the centrifugal mixed solution according to a mass ratio of 15-25: 4: 3: 0.2, adding polyvinyl alcohol, itaconic acid and an initiator, mixing, and keeping the temperature at 65-75 ℃ to obtain a polymer material, wherein the polymer material comprises, by weight, 20-30 parts of a centrifuge, 1-4 parts of pretreated activated sludge, 12-20 parts of yeast extract, 3-6 parts of glucose, 5-8 parts of glycerol and 0.2-0.5 part of Na2HPO4Mixing 4-8 parts of casein and 350-550 parts of water, shaking and culturing at 28-33 ℃ by shaking table, discharging, sterilizing to obtain a sterilizing material, taking the sterilizing material, concentrating under reduced pressure to obtain a concentrate, and taking the concentrate according to the mass ratio of 7-12: 5: 1, adding a polymerization material and auxiliary materials, mixing and stirring to obtain a compound material;
(2) at the temperature of 30-45 ℃, according to the mass ratio of 10-15: 1: 2-4: 40, mixing and stirring a compound material, nitrocellulose, trimethyl methoxylsilane and water, heating to 55-70 ℃, stirring, adding pretreated montmorillonite accounting for 12-20% of the mass of the compound material and epoxy resin accounting for 6-10% of the mass of the compound material, mixing, shearing, dispersing, and evaporating under reduced pressure to obtain the high-temperature-resistant stable composite asphalt separant according to claim 2, wherein the initiator in the step (1): according to the mass ratio of 1: and 2-5, mixing sodium sulfite and sodium persulfate to obtain the initiator.
3. The high-stability asphalt release agent according to claim 2, wherein the auxiliary materials in the step (1) are as follows: according to the mass ratio of 3-7: 2: 1 mixing hydroxyapatite, glycerol and dimethyl silicone oil to obtain the auxiliary material.
4. The high-stability asphalt release agent according to claim 2, wherein the pre-treated activated sludge in step (1): according to the mass ratio of 4: 1: and 18-25, mixing and stirring the activated sludge, urea and an ethanol solution, soaking at room temperature, and evaporating under reduced pressure to obtain the pretreated activated sludge.
5. The high-stability asphalt release agent according to claim 2, wherein the pre-treated montmorillonite in step (2): according to the mass ratio of 7-13: 3: 0.4 mixing montmorillonite, oleum Lini and silane coupling agent KH-550 to obtain pretreated montmorillonite.
6. The high-stability asphalt separant according to claim 1, wherein the preparation of the phosphogypsum treatment material comprises the following steps: at the temperature of 70-85 ℃, according to the mass ratio of 1: 6-10, mixing the phosphogypsum and the acidizing oxidation liquid, stirring for 1-3 hours under the condition of heat preservation, filtering, and taking a filter cake according to the mass ratio of 7-12: 3: 1: and 4, adding trimethyl siloxane, magnesium stearate and linseed oil, performing ball milling to obtain a ball grinding material, mixing 20-30 parts of ball milling material, 15-25 parts of polyvinyl alcohol, 3-7 parts of tetrabutyl titanate and 6-10 parts of titanyl sulfate acid solution according to parts by weight, adjusting pH, standing, filtering, collecting and calcining a filter cake, collecting and pulverizing and sieving calcined material, collecting and sieving particles according to the mass ratio of 5-8: 1, adding an additive and mixing to obtain the phosphogypsum treatment material.
7. The high-stability asphalt release agent according to claim 7, wherein the acidified oxidizing solution: according to the mass ratio of 10-15: and 3, mixing the hydrochloric acid solution and the potassium permanganate solution to obtain the acidified oxidation solution.
8. The high-stability asphalt release agent as claimed in claim 7, wherein the additive: according to the mass ratio of 1: and 12-20, mixing the hexacyclic ring stone with a citric acid solution, standing at room temperature, filtering, and collecting filtrate to obtain the additive.
9. The high-stability asphalt release agent according to claim 1, wherein the weight ratio of the emulsifier: according to the mass ratio of 2-5: 1, mixing Tween-80 and Span-60 to obtain the emulsifier.
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