30results about How to "High softening point" patented technology

The invention provides a preparation method of a multi-element doped asphalt-based hard carbon material for a negative electrode of a sodium-ion battery, which comprises the following steps: (S1) mixing and crushing asphalt and zinc salt of organic acid, and pre-oxidizing in an oxygen-containing atmosphere to obtain pre-oxidized asphalt particles; (S2) uniformly mixing the pre-oxidized asphalt particles, N-containing aromatic polyaldehyde and 1-hydroxyethylidene-1, 1-diphosphonic acid, and carrying out heating reaction in an inert atmosphere to obtain modified asphalt particles; and (S3) carrying out high-temperature carbonization on the modified asphalt particles in an inert atmosphere to obtain the multi-element doped asphalt-based hard carbon material. Firstly, an asphalt precursor and organic acid zinc are mixed and then pre-oxidized, then a cross-linking agent containing N and a cross-linking agent containing P are added for cross-linking, the obtained hard carbon material has a short-range ordered structure, and the sodium storage capacity and the sodium ion transmission capacity are both improved. The hard carbon material obtained by the preparation method has high specific capacity and first coulombic efficiency, and the rate capability is also improved.

The invention discloses an environment-friendly cooling anti-radiation refrigeration coating and a preparation method thereof, and belongs to the technical field of coating preparation. The raw materials are prepared from core materials, auxiliary materials and ingredients. The core material is prepared from a main raw material, hollow glass beads and environment-friendly resin, the auxiliary material is prepared from a nano additive and mineral pigment, and the ingredients are prepared from ferroferric oxide, nano titanium dioxide, diopside and polyvinylidene fluoride. The main raw materials comprise carbon quantum dots, carbon nanofibers, carbon nanospheres and graphene quantum dots; the environment-friendly resin base material is prepared from waterborne polyurethane resin, rosin resin, shellac resin and polytetrafluoroethylene; the nano additive is composed of silicon carbide, carbon black, carbon fibers, magnesium borate and carbon nanotubes. According to the coating, solar energy can be converted into light energy, the sunlight reflectivity of the coating is improved through the unique optical property of the coating, the sunlight reflectivity of the coating can be correspondingly improved along with increase of the sunlight intensity, and therefore the situation that a building absorbs excessive heat is avoided.

The invention discloses high-viscosity and high-elasticity modified asphalt and an asphalt composition, belongs to the field of asphalt, and solves the technical problem that the existing asphalt material lacks high-viscosity and high-elasticity modified asphalt suitable for diversified climates. The high-viscosity and high-elasticity modified asphalt suitable for diversified climates is prepared from the following raw materials in parts by mass: 100 parts of road petroleum asphalt, 2.5-4 parts of an epoxidized modified styrene-butadiene-styrene block copolymer, 5-10 parts of a hyperbranched polyester modified styrene-isoprene-styrene block copolymer, 5-10 parts of tackifying resin, 1-3 parts of a coupling agent, 1-3 parts of a coupling agent, 1-3 parts of a coupling agent, 1-3 parts of an antioxidant and 1-3 parts of a lubricant. The modified asphalt is prepared from, by weight, 1-2 parts of rubber powder, 1-2 parts of oleamide, 2-3 parts of bagasse fibers and 2-10 parts of other functional auxiliaries. The modified asphalt has the advantages of being high in viscosity and elasticity, suitable for various climates and the like.

The invention relates to the technical field of organic silicon resin preparation, in particular to trapezoidal methyl silicon resin and a preparation method thereof.The trapezoidal methyl silicon resin is prepared by taking methyl trichlorosilane as a main raw material, introducing a trapezoidal control agent containing amido and alkoxy at the same time to inhibit the reaction activity of the methyl trichlorosilane and then carrying out hydrolysis reaction in a small amount of alcohol solvent and water; the generation of a cross-linked network structure insoluble substance during hydrolysis is avoided, and the resin gelation risk is effectively reduced. The hydrolysis rate is reduced, so that the use amount of the solvent is reduced, the proportion of alcohol in the water phase is greatly reduced, and the process and environmental protection cost is reduced. The trapezoidal methyl silicone resin prepared by the method is excellent in viscosity performance, high in yield, excellent in boiling resistance, short in curing time, high in resin softening point and short in gelation time.

The invention provides a petroleum-based adhesive for a prebaked anode and a preparation method of the petroleum-based adhesive, and relates to the technical field of prebaked anode production. The preparation method of the petroleum-based adhesive comprises the following steps: mixing residual oil with an activating agent, then heating to carry out a first polymerization reaction, and cooling after the reaction to obtain a modified adhesive; and mixing the obtained modified binder with a fraction obtained after reduced pressure distillation of catalytic slurry oil, heating and melting, sealing, heating, carrying out a second polymerization reaction, and cooling after the reaction to obtain the petroleum-based binder for the prebaked anode. A two-stage thermal polymerization method is adopted, the first stage is a medium and low temperature thermal polymerization method, small molecules in residual oil are subjected to medium and low temperature thermal polymerization modification, and the carbon residue rate of asphalt can be increased; the second-stage thermal polymerization mainly enables part of unreacted groups of the first-stage modified adhesive to continue to be subjected to thermal polymerization reaction with the treated catalytic slurry oil at high temperature, and the high-residual-carbon low-viscosity adhesive coal pitch for the prebaked anode is obtained.

The invention relates to a method for preparing C9 petroleum hydrogenated resin through hydrogenation in a loop reactor and application. Comprising the following steps: S1, rectifying and cutting ethylene cracking C9 to obtain a fraction with a distillation range of 80-230 DEG C, and carrying out polymerization reaction to obtain a polymerization solution; s2, carrying out reduced pressure rectification on the polymerization liquid to obtain a resin liquid A; s3, dissolving the resin liquid A with a solvent, adding an adsorbent for treatment, and filtering to obtain a resin liquid B; s4, adding the resin liquid B into a loop hydrogenation reactor loaded with a catalyst, and carrying out hydrogenation reaction on the resin liquid B and hydrogen to obtain resin liquid C; and S4, rectifying the resin liquid C to obtain the product. A loop hydrogenation technology is adopted, the process is simple, catalyst loading and consumption are lower, selectivity is higher, a reactor is smaller, heat transfer capacity is very high, and the obtained hydrogenated resin is excellent in performance and has excellent compatibility with styrene elastomers such as SBS and SIS.

The invention belongs to the technical field of adhesives, and particularly relates to a preparation method of a heat-resistant flame-retardant foaming hot melt adhesive. The hot melt adhesive comprises the following raw materials in parts by mass: 40-50 parts of epoxy resin modified PA6, 5-10 parts of a flexibilizer, 10-15 parts of a flame retardant, 2-4 parts of a nucleating agent, 3-5 parts of a foaming agent, 1-2 parts of a coupling agent, 0.5-1 part of an antioxidant and 0.5-1 part of a lubricant. The preparation method comprises the steps of mixing, melting and mixing, granulating, foaming and the like. By optimizing the formula and the preparation process, the heat resistance and flame retardance of the foaming hot melt adhesive are remarkably improved, good bonding strength is kept, and meanwhile the used raw materials are environmentally friendly and free of pollution.

The invention discloses a preparation method of hard road asphalt. The method comprises the following steps: (1) mixing ethylene tar with a polymer modifier, and shearing to obtain a mixture; (2) oxidizing the mixture obtained in the step (1) to obtain an oxidized mixture; and (3) carrying out countercurrent contact on the oxidized mixture obtained in the step (2), a modifier and an extraction solvent, and carrying out supercritical extraction, wherein an obtained raffinate heavy component is used as the hard asphalt. According to the method, the ethylene tar is used as the raw material to prepare the hard road asphalt, so that high value-added utilization of the ethylene tar can be realized, and the obtained hard road asphalt has better high-temperature and low-temperature performance and good storage stability.

The invention relates to the technical field of polymer composite material processing, and discloses a polyphenyl ether modified EVA (Ethylene Vinyl Acetate) hot melt adhesive and a preparation method thereof. The hot melt adhesive is prepared from the following components in parts by weight: 35 to 50 parts of EVA (Ethylene Vinyl Acetate) resin, 5 to 20 parts of polyphenyl ether, 30 to 60 parts of tackifying resin, 5 to 20 parts of wax and 0.4 to 0.8 part of composite antioxidant. EVA and PPE in a specific ratio are selected as base materials (wherein EVA is the main base material), and a proper amount of tackifying resin is added into the system to modify the EVA hot melt adhesive, so that the melt viscosity of the system is reduced, the cohesion of the hot melt adhesive and the wettability of the hot melt adhesive on a bonding interface are improved, the bonding strength is enhanced, and the performance is further improved; the tackifying resin is low in volatile matter, and the softening point of the tackifying resin is higher than that of EVA resin, so that the softening point of the hot melt adhesive can be further improved, and the low-temperature resistance, mechanical property and ageing resistance of the hot melt adhesive are improved.

The invention discloses high-temperature-resistant anti-corrosion electrode paste which comprises the following components in percentage by mass: 45-77% of Ag / Pd powder, 3-15% of glass ceramic phase powder and 15-20% of an organic carrier, wherein the glass ceramic phase powder is high-temperature-resistant glass powder of an Al-Sm-Si-Ca-Mg system; wherein the glass ceramic phase powder is prepared from one or more of the following components in percentage by mass: 20 to 45 percent of Al2O3, 15 to 25 percent of MgO, 10 to 15 percent of SiO2, 5 to 15 percent of CaO, 1 to 5 percent of ZnO, 0.5 to 3 percent of Na2O / BeO, 0.5 to 5 percent of Y2O3, 5 to 10 percent of Sm2O3 / SrO, 0.5 to 5 percent of MgF / ZrO2, 0.1 to 0.5 percent of mullite powder, and / or 0 to 2 percent of La2O3, 0 to 2 percent of BeO, 0 to 2 percent of BaO, 20 to 2 percent of MnO, 0 to 2 percent of CuO, 0 to 2 percent of K2O, 50 to 2 percent of V2O, 0 to 2 percent of Li2O and 0 to 2 percent of Gd2O3. The electrode slurry obtained by the method is resistant to high temperature and corrosion, can realize good co-firing with an alumina-based insulating layer at a temperature of 1200 DEG C or above, and ensures that an oxygen sensor stably outputs a signal in a high-temperature severe environment.

The present application relates to a preparation process of isotropic pitch and high softening point coating pitch, which uses aromatic oil as raw material oil, and bio-tar or / and bio-pitch as co-carbonization agent. The pre-polymer material is obtained by pre-polymerization reaction of the bottom into the pre-polymerization reactor under the induction of oxygen-containing linear polymer. The photosensitive oxidation crosslinking agent is added to the pre-polymer material, the material distribution tray in the middle of the oxidation crosslinking reaction tower is fed, and the oxidation crosslinking gas enters from the lower part of the crosslinking reaction tower through the gas distributor. The obtained crosslinking pitch product is discharged from the bottom of the reaction tower. The crosslinking pitch then enters the middle of the polymerization reactor, and the polycondensation reaction occurs under the induction of high-energy electron beam irradiation. The polycondensation pitch product is obtained from the lower part of the polymerization reactor. The polycondensation pitch product enters the upper part of the extraction separation tower, and the sub / supercritical solvent enters the lower part of the extraction separation tower. The two-phase countercurrent contact extraction separation is carried out, and the isotropic pitch and high softening point coating pitch are obtained after the extraction solvent is separated.

The invention discloses an asphalt mixture additive as well as a preparation method and application thereof. The asphalt mixture additive comprises the following components in parts by weight: 100 parts of base asphalt; 1-10 parts of a modifier; 1-10 parts of a performance regulator; the performance regulator is obtained by modifying nano silicon dioxide with an accelerant, and the accelerant is a phosphate ester substance. The asphalt mixture additive disclosed by the invention is used in the asphalt mixture mixing process, and the use performances of high temperature resistance, stripping resistance, rutting resistance and the like of the asphalt mixture can be improved.

The invention relates to the technical field of road engineering asphalt pavement materials, in particular to a preparation method, a product and application of a polyethylene wax asphalt modifier. The preparation method of the polyethylene wax asphalt modifier comprises the following steps: uniformly mixing polyethylene particles and a cracking catalyst to obtain mixture particles; the mixture particles are fed into a double-screw extruder to be extruded, and micro-cracking liquid glue is obtained; and carrying out high-temperature and high-pressure reaction on the micro-cracked liquid glue to obtain the polyethylene waxy asphalt modifier. The cracking catalyst is prepared by loading nickel on expanded vermiculite powder. The polyethylene waxy asphalt modifier has the advantages that the asphalt viscosity is reduced, the asphalt is modified, the compatibility and storage stability between the asphalt and polyethylene are improved to a great extent, and compared with the common polyethylene cracking technology, the polyethylene waxy asphalt modifier has the advantages that a large amount of energy consumption can be reduced; and the recycling degree of the waste polyethylene plastic can be increased, energy conservation and environmental protection are achieved, and efficient utilization is achieved.

This invention relates to a conductive silver paste-specific glass powder for automotive rear window defroster lines, its preparation method, and its application. The glass powder comprises the following components in the indicated mass ratios: Bi₂O₃: 45-65%, SiO₂: 15-30%, B₂O₃: 5-12%, Al₂O₃: 1-5%, K₂O: 2-8%, Li₂O: 1-5%, CaO: 0.5-3%, and Sb₂O₃: 0.5-3%. It is processed according to the following steps: raw material selection, pretreatment, precise mixing, high-temperature melting, rapid water quenching, fine processing, and grading. Compared with existing technologies, this invention has advantages such as adaptability to high-temperature short-time sintering, high acid resistance, low sheet resistance, high welding strength, and high adhesion.

The invention relates to an environment-friendly low-temperature wax material and a preparation method thereof, and is characterized in that the environment-friendly low-temperature wax material is composed of a main material and an ethylene-vinyl acetate copolymer accounting for 0.4-0.6% of the mass of the main material, and the main material is composed of 50% of 62-64 DEG C paraffin, 45% of 56-58 DEG C paraffin and 5% of polyethylene wax. According to the environment-friendly low-temperature wax material disclosed by the invention, paraffin wax at different temperatures is selected and matched with a proper amount of polyethylene wax and ethylene-vinyl acetate polymer, so that the obtained environment-friendly low-temperature wax material is in a pasty temperature interval and has relatively high softening point, melting point and toughness, and deformation of a wax mold in a processing process is avoided. According to the method, stearic acid is omitted, hydrochloric acid does not need to be added during wax recovery, only water boiling treatment is needed, and the method is environmentally friendly and can be widely applied to the field of precision investment casting.

The invention relates to the technical field of refractory thermal insulation materials, in particular to a high-temperature-resistant marine rock wool product and a preparation method thereof. The high-temperature-resistant marine rock wool product specifically comprises the following components in parts by weight: 85-95 parts of a rock wool material, 1-10 parts of an adhesive, 2-4 parts of a silane coupling agent and 3-5 parts of a water repellent. According to the invention, through a high Al2O3 rock wool skeleton, Na2O and K2O are introduced as fluxing components, and the fire resistance, heat preservation, hydrophobicity and mechanical properties of the marine rock wool are synergistically improved by using the multi-element modified phenolic resin, so that the marine rock wool has a good application prospect.

The invention discloses high-elasticity and high-weather-resistance modified asphalt and a preparation method thereof. The preparation method comprises the following steps: performing high-speed shearing swelling on paraffin-based matrix asphalt, hydrogenated nitrile rubber powder and nano silicon dioxide powder to obtain an asphalt mixture; the preparation method comprises the following steps: mixing an ethylene-vinyl acetate copolymer, cycloundecane and ethylene glycol monoethyl ether acetate to obtain an ethylene glycol monoethyl ether acetate solution, and emulsifying an asphalt mixture and the ethylene glycol monoethyl ether acetate solution to obtain the high-elasticity and high-weather-resistance modified asphalt. The asphalt and the ethylene-vinyl acetate copolymer form a new chemical bond through an emulsification reaction, and cycloundecane improves the density and hardness of hydrogenated butadiene-acrylonitrile rubber and fills gaps in the asphalt, so that the crystallization ability between rubber molecules and asphalt molecules is improved, the crystallinity of the asphalt is improved, and the mechanical property of the asphalt is improved. The cohesive force and elasticity of the asphalt can be enhanced, so that the elasticity and weather resistance of the asphalt are improved, and the defects of insufficient elasticity and weather resistance of the asphalt in the prior art are overcome.

The invention discloses a lightweight PP modified material for an automobile bumper. The modified material is prepared from the following raw materials in parts by mass: 80-120 parts of a resin raw material; 5-20 parts of a filling agent; 10 to 25 parts of a toughening agent; 0.5 to 4 parts of a lubricant; 0.4 to 2 parts of an antioxidant; 0.3 to 1.5 parts of a cross-linking agent; the resin raw material is a recycled PP T30S polypropylene resin reworked material subjected to acid pickling treatment, and the filling agent is calcium carbonate with the particle size of 0.1-0.5 mu m; the modified material is prepared by mixing a resin raw material with other auxiliaries in proportion and then adding the mixture into a twin-screw extruder for extrusion granulation. The light-weight PP modified material for the automobile bumper is prepared by recovering and regenerating the polypropylene raw material through specific processing and modification processes, has the advantages of impact resistance, low temperature resistance, chemical resistance, light weight, recyclability and the like, and not only ensures the material performance, but also improves the production efficiency by recovering and regenerating the polypropylene raw material and combining with a modification processing flow. And the cost is effectively reduced, and the green and environment-friendly development concept is embodied.

The invention relates to the field of coal chemical industry, and discloses a method for preparing hard asphalt by solvent extraction of coal tar. The method comprises the following steps: mixing a first solvent with coal tar, heating and stirring, standing for a period of time, separating a first extract liquor on the upper layer, adding the first solvent into the raffinate again, heating, stirring, standing and circularly extracting to obtain a first raffinate, wherein the first solvent is selected from methanol or ethanol; and mixing a second solvent with the first raffinate, heating, stirring, standing, and separating an upper-layer second extract, the raffinate being the hard asphalt component, and the second solvent being selected from toluene or xylene. According to the method, high-quality hard asphalt is obtained by extracting coal tar step by step through two solvents, the softening point of the high-quality hard asphalt is high, and the content of toluene insoluble substances and quinoline insoluble substances is relatively high; the selected solvent is low in toxicity, low in boiling point and good in extraction effect, the extraction process is simple, the extraction temperature is low, and the solvent can be recycled; the method has the advantages of low energy consumption, less investment, stable quality of the hard asphalt product and less discharge of three wastes.

The invention provides a steel wire rope lubricating grease composition as well as a preparation method and application thereof, and belongs to the technical field of lubricating grease. The steel wire rope lubricating grease composition comprises the following components in percentage by mass: 30-60% of high-viscosity base oil, 10-35% of low-viscosity base oil, 1-10% of microcrystalline wax, 0.5-10% of a polymer, 1-5% of a softening point improver, 1-10% of a water repellent agent, 1-10% of a metal surface adhesive and 0.1-3% of an antirust agent. The dropping point of the steel wire rope lubricating grease composition reaches 110 DEG C or above, the low-temperature performance reaches-30 DEG C or below, and the steel wire rope lubricating grease composition has the advantages of excellent adhesion, corrosion resistance, heat and humidity resistance, long-term usability and the like, is suitable for protection and lubrication of steel wire ropes in environments with large temperature difference, high salt mist, high heat and humidity and strong corrosion, and has a very good industrial application prospect.

The invention provides a resource utilization method of ethylene tar, which is characterized in that phosphoric acid is added into the ethylene tar, and then light fractions and heavy fractions in different temperature intervals are respectively obtained in a reduced pressure distillation manner, so that the yield of light components and the carbon yield in a carbonization stage are increased; meanwhile, sulfur, nitrogen and metal elements in the ethylene tar can be transferred to the heavy fraction, so that the light fraction has fewer impurities and is purer. The method provided by the invention can recycle all fractions of the ethylene tar, improves the overall utilization rate of ethylene tar resources, and has the advantages of economy and environmental protection.

The invention relates to the technical field of asphalt modification, in particular to low-carbon high-stability modified asphalt and a preparation method thereof.The low-carbon high-stability modified asphalt comprises matrix asphalt, a low-carbon high-stability asphalt modifier, a stabilizer and an accelerant, the doping amount of the low-carbon high-stability asphalt modifier is 2-10 wt% of the matrix asphalt, the doping amount of the stabilizer is 0.2-0.3 wt% of the matrix asphalt, and the doping amount of the accelerant is 0.75-1.75 times of the doping amount of the stabilizer. According to the prepared modified asphalt, the needle penetration is remarkably reduced, the softening point is improved, and the rotary viscosity at 135 DEG C in the aspect of constructability is excellent. The prepared modifier can effectively improve the high-temperature stability and creep resistance of asphalt, so that a green, high-performance and sustainable asphalt binder is produced. In addition, harmless and resource utilization of the waste rubber bands is achieved. The cost of the modified asphalt is reduced, and the dual purposes of environmental protection and economic benefits are achieved.

The method for preparing the petroleum-based high-softening-point pitch according to the present invention is characterized by comprising: an oxidation heat treatment step in which an oxidizing gas is introduced into a raw material containing a petroleum-based residual oil to heat the raw material; and a reduced-pressure heat treatment step for heating the product of the oxidation heat treatment step under reduced-pressure conditions, the oxidation heat treatment step being performed in an oxidation heat treatment device satisfying the following condition (1). Condition (1): 40 < = D1 / D2 < = 100 (In said condition (1), D1 is the diameter of the oxidation reactor, and D2 is the diameter of the flow tube into which the oxidizing gas is introduced).

The invention discloses a high-strength stress absorbing patch, including an absorbing patch main body, an isolation layer evenly applied on the absorbing patch main body, and the isolation layer main body is a high-strength and clean quartz sand of 20-60 mesh; the tire base of the absorbing patch main body is soaked by a modified polymer, and no unsoaked stripes appear. The advantages of the present invention compared with the prior art are: it has stress absorption, interlayer bonding and waterproofing functions, as an integrated road interlayer transition material, a high-performance tire base cloth with good flexural resistance, high tensile strength and corrosion resistance is selected as the base material, and is compounded at high temperature in a high-performance viscoelastic material with high softening point and good low-temperature flexibility. As a new type of composite geosynthetics with waterproof, anti-cracking, large deformation and transition bonding layer functions developed after integrating "anti-cracking patch, road and bridge waterproofing membrane, AR-SAMI", it has good compatibility with asphalt mixture, and is only accompanied by slight deformation under high temperature and rolling conditions.

The invention discloses a production method of hard road asphalt. The method comprises the following steps: (1) carrying out reduced pressure distillation on ethylene tar to obtain a light component and a heavy component, with the light component as an extraction solvent; (2) carrying out oxidation treatment on the heavy component obtained in the step (1) to obtain a mixture subjected to oxidation treatment; and (3) carrying out countercurrent contact on the oxidized mixture obtained in the step (2), a modifier and the extraction solvent, and carrying out supercritical extraction, wherein the obtained raffinate heavy component is used as the hard asphalt. According to the method, the ethylene tar is used as a raw material to prepare the No.15 hard road asphalt, so that high value-added utilization of the ethylene tar can be realized, and the obtained hard road asphalt has better high-temperature and low-temperature performance.

The application relates to the technical field of waterproof coiled materials, and discloses a high-molecular pre-paved waterproof coiled material for tunnels, which comprises, from top to bottom, a magic tape hook surface layer, a magic tape hair surface layer, a high-molecular sheet layer, a glue-adhesive waterproof layer and an anti-adhesive layer; the glue-adhesive waterproof layer is hot-melt pressure-sensitive glue; the hot-melt pressure-sensitive glue comprises the following components by weight: 10-15 parts of naphthenic oil, 20-40 parts of a styrene-isoprene-styrene block copolymer, 10-15 parts of polyisobutylene, 5-10 parts of an amorphous alpha-olefin copolymer, 10-20 parts of water white hydrogenated rosin, 0.5-1.5 parts of an antioxidant, 0.5-1 part of an anti-aging agent and 0.5-1 part of a light stabilizer; the addition amount of the naphthenic oil is less than that of the polyisobutylene. The above technical scheme solves the problem of insufficient peeling strength of the glue-adhesive waterproof layer of the high-molecular pre-paved waterproof coiled material for tunnels in the related art due to the addition of the naphthenic oil.

The utility model discloses a device for producing modified pitch by two-section serial steam continuous pressurization thermal polymerization. The device is sequentially provided with an oil storage tank, a dehydrating tower, a tar distillation tower, an anthracene oil distillation tower, a pitch reactor and a flash tower along the preparation direction. The asphalt reactor is a pressurized reaction kettle and comprises a first reaction kettle and a second reaction kettle, and the bottoms of the first reaction kettle and the second reaction kettle are communicated in series through a pipeline; the top of each of the first reaction kettle and the second reaction kettle is provided with a leading-in pipe, a leading-out pipe, a pressure gauge and a thermometer, the leading-in pipes are used for leading in superheated steam, the leading-out pipes are used for leading out volatile components, the thermometers are used for displaying the internal reaction temperature in real time, and the pressure gauges are used for displaying the internal pressure value in real time; the outer sides of the first reaction kettle and the second reaction kettle are provided with thermal insulation interlayers, and the thermal insulation interlayers are used for thermal insulation treatment of internal materials. Low-boiling-point substances are evaporated out through steam stripping, the softening point of the asphalt is increased, the temperature in the asphalt reactor is reduced by introducing steam, and the generation of quinoline insoluble substances is reduced.

This invention discloses a super-viscous, high-permeability reducing thin-layer tack coat oil, its preparation method, and its application, relating to the field of road engineering technology. The tack coat oil is made from the following raw materials in parts by weight: 60 parts of oil slurry asphalt composition, 5-8 parts of modifier, 30-35 parts of regenerator, 2-5 parts of surfactant, and 0.6-1.2 parts of compatibilizer. The tack coat oil of this invention not only has high initial and forming strength and permeability, but also improves construction efficiency, eliminating the need for pre-spraying and waiting for emulsion breaking. It also has a regeneration and restoration effect on old pavements, activating the activity of oxidized asphalt and repairing bonding failures. Furthermore, this tack coat oil has strong adaptability to the construction environment, making it less likely for subsequent paving machinery tires to lift it, and eliminating the need for a dedicated paver.

The invention relates to a polymerization tower, in particular to a polymerization tower for asphalt modification, which comprises a vent hole, an outer heater, an atomizer, a feed inlet, a liquid collecting part, a special-shaped tray and a liquid outlet, and the vent hole, the atomizer, the feed inlet, the liquid collecting part, the special-shaped tray and the liquid outlet are vertically sleeved in the polymerization tower. The invention also designs an asphalt modification system using the polymerization tower. The polymerization tower realizes uniform temperature of materials, the polymerization time of the materials in the tower is basically consistent, and the problem of over-polymerization of part of the materials caused by non-uniform temperature field of a conventional polymerization kettle and a flowing dead zone of equipment is solved.

The invention belongs to the technical field of modified asphalt and processing and preparation thereof, and particularly relates to asphalt modified by waste tire rubber powder and a preparation method of the asphalt, and the asphalt is prepared from the following components in parts by weight: 80-100 parts of matrix asphalt, 30-50 parts of waste tire rubber powder, 5-8 parts of a stabilizer, 3-5 parts of an anti-aging agent, 1-3 parts of a catalyst and 0.3-0.6 part of organic amine. The waste tire rubber powder and the asphalt have good bonding capacity, rubber powder particles are not prone to being separated from the modified rubber powder asphalt, the high-temperature softening resistance and the low-temperature cracking resistance are excellent, the service life of a road can be effectively prolonged, the quality of the paved road is good, the pavement maintenance cost is reduced, and the service life of the road is prolonged. The thickness of the pavement is reduced under the standard of not reducing the strength of the pavement, so that the consumption of asphalt is reduced, the paved pavement is black, the driving comfort is improved, and the pavement has the advantages of simplicity in preparation, low cost, low energy consumption, environmental friendliness and the like.