46 results about "Asphalt" patented technology

The invention provides a novel method for preparing a latent nonionic self-emulsifying epoxy curing agent. The method comprises the following steps of: reacting long alkyl chain fatty amine with diglycidyl ether to prepare an addition product of which the middle part is connected with a long hydrophobic side chain and two ends are provided with epoxy groups; and reacting polyamine with a carbonyl compound to prepare an imine compound which contains secondary amine, and sealing the end to prepare the latent nonionic self-emulsifying epoxy curing agent. Under water environment, the imine structure in the curing agent hydrolyzes hydrophilic amino, and the curing agent contains the long hydrophobic alkyl chain, so the curing agent has the functions of emulsifying and curing an epoxy resin. The curing agent can be used for water-based epoxy emulsion coatings, water-based epoxy resin modified emulsified asphalt and cement and the like, and has excellent adhesion performance of ketimine on a wet surface. Due to the introduction of hydrophobic chains, the stability of the imine curing agent is improved in the water environment, and the performance of the curing agent in the aspect of wet surface or underwater adhesion can also be improved.

The present invention belongs to the field of coal chemical technology, petrochemical technology and carbon material technology, and is preparation process of foamed carbon material with coal-base medium-temperature asphalt and petroleum-base intermediate-phase asphalt as material and through self reaction. The preparation process includes pulverizing and modifying asphalt material to form precursor; heating in reactor to form sticky fluid while releasing volatile gas to form foam; further raising temperature to solidify sticky fluid and settle foam; and final carbonizing at high temperature. The present invention has low production cost, high performance of the foamed carbon material, etc. and the product may be used in aeronautics, astronautics and other hi-tech fields.

The invention provides an asphalt modified thermoplastic polyolefin water-proof coiled material and a preparation method thereof; the coiled material is characterized by consisting of an upper surface layer, a main body layer and a reinforcing layer; the upper surface layer is made from white or colored thermoplastic polyolefin with excellent ultraviolet radiation resistance, the main body layer is made from black asphalt modified thermoplastic polyolefin, and the reinforcing layer consists of a middle reinforcing layer and a surface lining layer which are arranged as required. The asphalt modified thermoplastic polyolefin water-proof coiled material has the advantages of good processing property, excellent mechanical property, high tension strength, good dimensional stability, strong puncture resistance, good ultraviolet radiation resistance, small specific gravity, capacity of realizing convenient seam suturing welding of the main body and recoverable tailing and excessive materials, and the like.

The invention belongs to the technical field of a refractory castable, and particularly relates to a castable for a blast-furnace tapping channel and a preparation method thereof. The castable comprises the following components: 55-80wt% of fused brown corundum, 8-21wt% of silicon carbide, 0.01-5wt% of carbon source, 2-8wt% of alpha-alumina micro powder, 1-7wt% of fused white corundum, 0.5-5wt% of silica powder, 1-5wt% of calcium aluminate cement, 0.3-4wt% of elemental silicon powder, 0.01-0.4wt% of water reducing agent, 0-0.2wt% of organic fibers and 0-0.2wt% of aluminum powder. The preparation method comprises the steps of dry-blending the components for 10-180 seconds, additionally adding water accounting for 4-6wt% of the raw materials, and stirring for 1-8 minutes so as to obtain the castable. Carbon nanotubes are introduced to the castable for the tapping channel so as to partially or totally replace spherical asphalt and be uniformly distributed in the castable, and can be filled into tiny gaps so as to improve the compactness of the castable, so that the anti-erosion and anti-scouring properties of the castable are improved, toxic smog formed in the process of baking the spherical asphalt is reduced, and the body injury of workers and the environmental pollution caused by the toxic smog are reduced; the castable has the characteristics of excellent properties, long service life and environmental friendliness.

The invention discloses a preparation method of an oleophilic hydrophobic coated proppant. The method comprises the following steps: 1) mixing a thermoplastic resin and petroleum asphalt, heating to 70-100 DEG C, melting, stirring and compounding to obtain a compounded resin; and weighing 20-40-mesh quartz sand and haydite aggregate, adding into a resin sand mill, heating to 140-230 DEG C, sequentially adding a silane coupling agent, the compounded resin, a plasticizer and an amine curing agent while stirring, adding a dispersing agent when a dispersion evidence occurs, discharging, cooling, and screening to obtain the oleophilic hydrophobic coated proppant. After adding the asphalt, the coated proppant product has favorable oleophilicity and hydrophobicity, has higher flow conductivity in crude oil than the traditional coated proppant, is beneficial to petroleum exploitation, enhances the oil output of the crude oil, and has crucial importance for enhancing crude oil production rate and grade of China.

The invention discloses a high-precision detection method for SBS (styrene butadiene styrene) contents in SBS modified asphalt. The high-precision detection method includes the steps: preparing various SBS modified asphalt with the known SBS contents; respectively testing an infrared spectrum based on Fourier transformation for the SBS modified asphalt, calculating a specific value A of a characteristic absorption peak area A1 of an SBS modifying agent in the SBS modified asphalt and the sum of the characteristic absorption peak area A1 of the SBS modifying agent and a characteristic absorption peak area A2 of base asphalt, and building a standard curve equation of A values of the SBS modified asphalt corresponding to the SBS contents; testing the SBS modified asphalt to be detected by the aid of the infrared spectrum based on Fourier transformation, calculating corresponding A values, and substituting the corresponding A values into the standard curve equation to obtain the SBS contents in the SBS modified asphalt to be tested. The high-precision detection method has the advantages that the detection method is simple, the influence of the thickness of a modifying asphalt test sample on a test result is eliminated by the aid of the specific value of the characteristic absorption peak areas, section between characteristic absorption peak areas of an original creation infrared spectrum is selected, and the SBS contents in the SBS modified asphalt are rapidly and precisely detected.

The invention discloses a preparation method of durable modified asphalt. The method comprises the following steps: performing organic treatment on montmorillonite, pouring the montmorillonite and anintercalator into a flask, feeding a dispersing agent to perform dispersing in the flask, performing stirring and suction filtration on dispersive montmorillonite, so as to obtain a montmorillonite dispersion liquid, washing the montmorillonite dispersion liquid through deionized water and drying to accomplish the organic treatment on the montmorillonite; mixing SBS with asphalt, so as to obtain molten SBS modified asphalt, feeding the montmorillonite subjected to organic treatment and titanium dioxide into the molten SBS modified asphalt, stirring, so as to obtain a mixture, putting the mixture into a stirrer to stir the mixture, and ensuring that the temperature of stirring environment is 140 to 160 DEG C, so as to obtain the durable modified asphalt. According to the method, the durablemodified asphalt prepared from the titanium dioxide replacing nanometer materials is applied to pavement laying, the ageing resistance of pavement can be improved, during the preparation, the costs of the organic treatment on the montmorillonite and the adding design of elastomers are low.

A method of manufacturing a roofing shingle includes applying an asphalt coating to a substrate to define an asphalt-coated sheet, the asphalt coated sheet including a headlap portion and a tab portion. Reinforcement material is secured to the headlap portion of the asphalt-coated sheet, and the amount of the asphalt coating that penetrates into the reinforcement material is controlled.

The invention discloses a strong anti-corrosion treatment technique for the surface of a carbon steel valve. The strong anti-corrosion treatment technique specifically comprises the steps that firstly, a carbon steel valve body is deoiled through ultrasonic waves; secondly, rust removal and passivation are conducted on the surface of the valve body after polishing and shot blasting are conducted on the surface of the valve body; thirdly, high-pressure washing and ultrasonic cleaning are conducted on the valve, and the valve is completely cleaned through blowing by means of an air gun; fourthly, acide triphosphorique epoxy anti-corrosive primer is smeared on the surface of the valve body after the third step is completed, and then the surface of the valve body is dried; fifthly, the anti-corrosion primer of the valve body obtained after the fourth step is coated with high-solid coating paint, and the valve body coated with the high-solid coating paint is dried sufficiently; sixthly, the valve body obtained after the fifth step is coated with epoxy celluloid paint and then dried; seventhly, the valve body obtained after the sixth step is coated with asphalt paint and then dried; and eighthly, the adhesive force of the asphalt paint on the outer surface of the valve body is detected through a cross-cut tester gridding method. By the adoption of the strong anti-corrosion treatment technique for the surface of the carbon steel valve, utilization of the valve in the severe environments such as the humid environment is facilitated, frequent maintenance and replacement are avoided, and the service life of equipment is prolonged.

The present invention relates to a simple method for determining high modulus asphalt fatigue performance. The method comprises: adopting a time scanning test to test plural shear moduli of high modulus asphalt under different loading times; and specifically adopting the loading time corresponding to attenuation of the plural shear moduli to 50% of the initial value at a temperature of 20 DEG C under frequency of 10 Hz, a strain of 1% (characterizes light traffic), a strain of 3% (characterizes moderate traffic) and a strain of 5% (characterizes heavy traffic) as a characteristic value of a high modulus asphalt fatigue performance simple test method. The test method has the following characteristics that: test data treatment is simple, special data analysis software is not required, high modulus asphalt fatigue performance simple test method application and promotion are easily achieved, the strain of the high modulus asphalt fatigue performance is 1-5% so as to carry out fatigue performance comparison on the high modulus asphalt under the same strain condition, and evaluation indexes are scientific and credible.

The invention discloses heat-resistant modified asphalt, which is prepared from the following raw materials in parts by weight: 140-160 parts of asphalt, 12-16 parts of furan resin, 3-7 parts of dioctyl phthalate, 1-3 parts of sugar alcohol, 2-5 parts of stearamide, 0.8-1.6 parts of mica powder, 0.5-1.2 parts of manufactured sand, 14-16 parts of silicone oil, 3-6 parts of a silane coupling agent, 1-5 parts of an anti-aging agent and 2-6 parts of heat-resistant additives. According to the heat-resistant modified asphalt disclosed by the invention, the performance of the asphalt under a high-temperature condition is improved due to addition of the heat-resistant additive; a mixture of sodium silicate, polyurethane, titanium dioxide and phenolic resin are taken as the heat-resistant additives; the heat resistance is good; the strength of the asphalt can be improved; the viscosity and the ageing resistance of the asphalt are improved due to addition of furan resin, dioctyl phthalate, sugar alcohol, stearamide, mica powder, the manufactured sand, silicone oil, silane coupling agent and the anti-aging agent; and the use of the asphalt under the high-temperature condition is met.

A joint density assembly adapted for use on a screed comprising an endgate having a vertical axis, a frame mounted to the screed, a mounting means adapted to mount the frame to the screed, and a fixed shoe, a bolt-on unit mounted to the screed and disposed between the screed and the endgate, and a means for adjusting the bolt-on unit between a downward position and an upward position. A method for increasing the density of an asphalt longitudinal joint comprising providing a joint density assembly and adjusting the bolt-on unit.

The invention discloses an energy-saving road asphalt crack pouring machine, which belongs to a road construction facility. The energy-saving road asphalt crack pouring machine comprises a rack, an asphalt melting box, a liquefied gas tank carrying box, a liquefied gas burning mechanism, a molten asphalt lead-out box, a crack pouring mechanism, an asphalt stirring mechanism, a rack forward guide mechanism and a control mechanism, wherein the asphalt melting box is arranged at one end of the rack; the liquefied gas tank carrying box is arranged at the other end of the rack; the liquefied gas burning mechanism is arranged in a liquefied gas burning mechanism cavity; the molten asphalt lead-out box is arranged on the lower part of the asphalt melting box; the crack pouring mechanism is arranged on the molten asphalt lead-out box; the asphalt stirring mechanism is arranged on a box cover; the rack forward guide mechanism is arranged on the rack; the control mechanism is arranged on one side of the asphalt melting box and the liquefied gas tank carrying box; the outer wall of the asphalt melting box is provided with an expansion gas absorbing mechanism, and the box wall is provided with a molten asphalt lead-in port; the bottom of the box cavity of the molten asphalt lead-out box is provided with a crack pouring pipe hole, and the upper part of the box cavity is provided with a molten asphalt lead-out box cover; and the crack pouring mechanism comprises a motor, an asphalt pump, a guide column, a rubbing board rack, an enclosing baffle frame, a scraping plate and a crack pouring pipe. The energy-saving road asphalt crack pouring machine has the advantages of good energy saving effect, capability of forwardly and quickly advancing, short heating time, capabilities of guaranteeing safety and avoiding blockage and good operability effect.

The invention discloses a ground asphalt cracking device for road construction. The ground asphalt cracking device for the road construction comprises a cracking vehicle body, wherein a control switchis installed at the top end of the cracking vehicle body in an embedded mode; an installation through hole is formed in the position, corresponding to one side of the control switch, of the top end of the cracking vehicle body; installation grooves are symmetrically formed in both ends of the cracking vehicle body; and rotating wheels are symmetrically and rotatably connected to the inner walls of one ends of the installation grooves. The ground asphalt cracking device for the road construction is scientific and reasonable in structure and safe and convenient in use; fixed screw rods are taken out from a cracking machine mounting seat and fixed plates by rotating rotary handles, so that angles of a asphalt cracking rod and a cracking machine can be adjusted; and vibration transmitted to the cracking machine mounting seat can be absorbed through mounting slide plates connected to one end of the cracking machine mounting seat in combination with shock absorption top plates, shock absorption springs and shock absorption columns connected to the top ends and the bottom ends of the mounting slide plates, so that the vibration transmitted to the cracking vehicle body can be reduced whenground asphalt is cracked, and the shock absorption protection to the cracking vehicle body is increased.

Provided herein are asphalt compositions comprising asphalt, a carboxylated copolymer, a polyalkyleneimine, and a photoinitiator. The carboxylated copolymer present in the asphalt compositions can be a latex composition derived from a carboxylated styrene-butadiene copolymer. The carboxylated copolymer includes from 0.5% to 25% by weight carboxylic acid monomers. The carboxylated styrene-butadiene polymer and the asphalt can be present in a weight ratio of from 1:99 to 1:10. The polyalkyleneimine present in the asphalt compositions can be in an amount of greater than 0% to up to 10% by weight of the asphalt composition. The photoinitiator can include benzophenone and/or a derivative thereof. Tack coats meeting ASTM-D-977 standard comprising the asphalt compositions disclosed herein are also provided. The tack coat can have a tack-free time of 10 minutes or less. Methods of producing the asphalt compositions and tack coats are also disclosed.

The invention relates to the technical field of trichloroethylene recovery, and aims at solving the problems that the trichloroethylene recovery devices in the prior art have difficulty in conveniently collecting and separating a miscible material of asphalt and trichloroethylene and are environment-hostile. The invention provides a trichloroethylene recovery device and a trichloroethylene recovery method. The trichloroethylene recovery device comprises a raw material vessel, a heating device and a condensing device, wherein the condensing device comprises a condensing plate and a guide plate, the condensing plate is covered above the opening of the raw material vessel, the guide plate is separately opposite to the condensing plate and positioned below the condensing plate; the guide plate is provided with a gas flow port communicating the raw material vessel with the lower end surface of the condensing plate; the guide plate is obliquely arranged; and the trichloroethylene recovery device is also provided with a liquid trichloroethylene delivery port. The trichloroethylene recovery device has the beneficial effects of treating and separating the miscible material of asphalt and trichloroethylene in time, utilizing trichloroethylene repeatedly many times, reducing experimental cost, and avoiding pollution of water and air due to disorderly emission.

The invention relates to a solid waste-based baking-free environment-friendly hollow brick and a preparation method thereof, and belongs to the field of solid waste utilization environmental protection and the field of hollow bricks. Red mud, mineral powder, industrial by-product gypsum, fly ash, silica fume, aluminum ash, carbide slag, wastewater and other solid wastes and waste liquids are usedas main raw materials. The hollow brick comprises the raw materials in parts by mass: 35-50% of red mud, 30-45% of mineral powder, 10-20% of industrial by-product gypsum, 5-15% of a reinforcing agent,0.5-3% of a cementing agent and the balance of sewage or wastewater, wherein the reinforcing agent is prepared by mixing 15-23% of silica fume, 10-25% of aluminum ash, 20-30% of fly ash, 15-30% of carbide slag, 5-10% of zeolite powder and 5-15% of asphalt. Large-scale resource utilization of solid waste is achieved, the occupied area of the solid waste is reduced, environmental pollution is reduced, no natural mineral resources are consumed during preparation, multiple solid waste and waste liquid are used as main raw materials of the baking-free hollow brick, and the product has the advantages of high strength, low cost, environmental protection, energy conservation, simple and convenient process and easiness in popularization and application.

The invention relates to a method for preparing modified asphalt by utilizing waste transfusion bag film in one step. The invention adopts the technical scheme that 1, the modified asphalt comprises the following compositions in parts by mass: 100 parts of base asphalt, 2 to 60 parts of transfusion bag film, 1 to 10 parts of nano montmorillonoid and 1 to 10.2 parts of a compatilizer. The base asphalt is heated and molten, the compatilizer is added in the base asphalt to be mechanically sheared at a high rotation speed or manually stirred; then the transfusion bag film fragments are added to be mechanically sheared at a high rotation speed; and the nano montmorillonoid is added to be mechanically sheared at a high rotation speed, the waste recycled disposable multilayer coextrusion transfusion bag film is enabled to be used as the modifier, and the base asphalt is modified by adopting a one-step technology. The prepared modified asphalt is low in cost and high in comprehensive performance, the high temperature resistance is good, and a reliable way for comprehensively utilizing the medical waste can be provided.

The invention discloses an odorless asphalt mixture, a preparation method thereof and an application of the odorless asphalt mixture on a pavement, and the preparation method comprises the following steps: carrying out low-temperature plasma modification on a graphdiyne nano material to obtain a graphdiyne modified solution; mixing 1-10 parts by weight of magnesium hydroxide, 1-2 parts by weight of TEOS, 1-5 parts by weight of vegetable oil, 1-10 parts by weight of SBS and 1-2 parts by weight of an odor inhibitor to obtain an asphalt composite modifier; heating the matrix asphalt to 150 to 170DEG C; then adding an asphalt composite modifier and graphdiyne modification liquid; wherein the weight ratio of the matrix asphalt to the asphalt composite modifier to the graphdiyne modification liquid is 100: (1-5): (10-25), shearing and heating to 185-220 DEG C, shearing and swelling for 0.5-2 hours, then cooling to 170-180 DEG C to obtain the odorless asphalt mixture, drying and packaging toobtain the odorless asphalt mixture. By selecting a novel nano material graphdiyne, compared with traditional materials such as graphene and carbon nanotubes, the optimization efficiency of the performance of the odorless asphalt is higher.

The invention provides a preparation method of zeolite-activated carbon composite adsorbent, comprising the following steps: (1) mixing coal gangue powder, asphalt, and white carbon black, drying, and then, in a tube furnace, under the protection of inert gas, Carbonization, and then carbon dioxide gas is introduced to activate to obtain the activated sample; (2) Add the activated sample to the sodium hydroxide solution, react, stand at room temperature for hydrothermal crystallization, then ultrasonically disperse, filter, and filter the residue Washing and drying to obtain the zeolite-activated carbon composite material; (3) Add the obtained zeolite-activated carbon composite material to the glucose solution, stir, filter, dry the obtained filter residue, and then put it into a tube furnace under the protection of an inert gas , carbonized to obtain the zeolite-activated carbon composite adsorbent. The zeolite-activated carbon composite adsorbent prepared by the invention has large BET specific surface area and micropore specific surface area, and has large adsorption capacity for CH4 and N2.

The invention provides a recycled asphalt heating device which comprises a rotary drum, a heater and an air guide and reflux device, wherein the rotary drum is provided with a material feeding end and a material discharging end; the heater is connected with the material feeding end and is used for injecting high-temperature gas into the rotary drum; the air guide and reflux device is arranged at the material discharging end of the rotary drum and is used for heating the outer wall of the material discharging end through the gas flowing out of the material discharging end. According to the recycled asphalt heating device provided by the invention, the air guide and reflux device is arranged at the material discharging end of the rotary drum, so that the air guide and reflux device can be used for guiding the gas discharged from the material discharging end to the outer side wall of the material discharging end of the rotary drum, to enable the gas discharged from the material discharging end to heat a material in the rotary drum again, and temperature reduction of the material discharging end of the rotary drum can be slowed down. Therefore, the phenomenon that the material is attached to the inner wall of the material discharging end of the rotary drum and a material raising device due to extremely low temperature is avoided, the forming quality of a material curtain is effectively enhanced, the heating efficiency of a product is improved, the cleaning period of the rotary drum is correspondingly prolonged, and continuous production of the product is guaranteed.

The invention discloses chemical pump inner cavity insulated oil paint, and relates to the technical field of pump valve preparation. The chemical pump inner cavity insulated oil paint is prepared from the following raw materials in parts by weight: 50-60 parts of chlorinated rubber resin, 25-35 parts of butadiene styrene rubber resin, 30-40 parts of fluorocarbon resin, 6-8 parts of pentaerythritol, 3-5 parts of tall oil acid, 6-8 parts of castor oil, 10-20 parts of polyphenylene sulfide, 5-7 parts of polymerized rosin, 3-5 parts of sepiolite powder, 5-7 parts of wollastonite powder, 6-8 parts of epoxy linseed oil, 3-5 parts of sodium pyrophosphate, 6-8 parts of copper oxide powder, 3-5 parts of nanometer titania, 6-8 parts of kaolin, 5-7 parts of glass fiber, 6-8 parts of rare earth chloride, 20-30 parts of modified asphalt and 120-130 parts of water. The chemical pump inner cavity insulated oil paint has the beneficial effects that the prepared oil paint has excellent insulating property, the insulating property between a chemical pump body and a fluid can be effectively protected, normal operation of a chemical pump is guaranteed, and the service life of the chemical pump is prolonged.

The invention discloses an efficient feeding system and method for asphalt mixture level batching bins. The efficient feeding system comprises a material conveying vehicle, a running track for the material conveying vehicle to run and a first weighing sensor for sensing the weight of the material conveying vehicle, the material conveying vehicle is provided with a driving mechanism, and the driving mechanism comprises a motor controlled by a frequency converter. The running track is arranged above the multiple parallel-distributed bins in parallel, the bottom of each bin is provided with a second weighing sensor used for sensing the weight of the corresponding bin, the running track is provided with a material receiving position and a plurality of discharging positions distributed at intervals, and the material receiving position is provided with a first position switch used for sensing return of the material conveying vehicle. The multiple discharging positions are each provided witha second position switch used for sensing whether the material conveying vehicle is in place or not. The first weighing sensor, the frequency converter, an automatic braking mechanism, the second weighing sensors, the first position switch and the second position switches are all electrically connected to a controller. Automatic feeding is achieved, the running efficiency of the material conveyingvehicle is improved, and the feeding efficiency of the bins is further improved.