98results about How to "Lower mixing temperature" patented technology

A warm-mix asphalt additive machine preparation method, the additive is formed by reacting the following components in parts by weight: 4-15 parts of alkoxysilane, 1-8 parts of polyether, 0-1 part of melamine formaldehyde resin, and 0 parts of acid catalyst -1 part, 0-1 part of alkali catalyst, 2-10 parts of deionized water, 30-100 parts of solvent; the preparation method comprises the following steps: (1) adding a quantitative amount of solvent and Alkoxysilane, heated to 80°C; (2) Add a mixture of acid catalyst, base catalyst, and deionized water, and react at a constant temperature of 80°C for 90 minutes; (3) Heat up to 100°C, condense and reflux for 120 minutes, and collect about 55ml of distillate; ( 4) Add an acid catalyst and a certain amount of polyether into the flask, heat up the esterification reaction for 180 minutes; (5) evacuate, condense and reflux for 30 minutes, cool down to room temperature, add a certain amount of melamine formaldehyde resin and stir evenly, add an appropriate amount of alkali catalyst to adjust the pH = 8 or so, the finished product is obtained.

An aerated food product comprising hydrophobin and a surfactant is provided, the aerated food product containing a population of gas bubbles, wherein at least 65% of the gas bubbles have a diameter of less than 20 μm. Processes for producing such an aerated food product are also provided.

A method for forming II-type cellulose, which comprises introducing together a slurry having water and a I-type cellulose dispersed therein and water in the state of high temperature and high pressure to a tubular reactor (28) contacting the I-type cellulose with a hot water in a supercritical state or subcritical state for a predetermined time in the tubular reactor (28), to thereby cleave a part of the hydrogen bonds in the I-type cellulose and dissolve the I-type cellulose into the water in a supercritical state or subcritical state, cooling a cellulose solution discharged from the tubular reactor (28) in a cooler (30) to room temperature or lower, followed by allowing to stand, to thereby precipitate crystals of II-type cellulose having a molecular weight lower than that of the I-type cellulose, and separating the resultant II-type cellulose from a solvent. The method allows the preparation of pure II-type cellulose by the use of a simple process.

A polyurethane is obtained by continuously reacting a polyurethane prepolymer in an asphalt or asphalt mixture material system under high temperature. The prepolymer is prepared by: adding a polymerization inhibitor, catalyst and isocyanate component in a reaction container, adding a polyol to the reactor while stirring at room temperature under nitrogen, increasing the temperature to 50-80° C., and maintaining the temperature to react for 0.5-6 hours. A polyurethane modified asphalt, a mixture material containing the polyurethane and a polyurethane modified asphalt pavement structure can be prepared. The synthesis condition of the polyurethane is mild, and a secondary reaction with the air and an active hydrogen component in the asphalt can occur during maintenance and formation to further increase the strength of a mixture material. The standard Marshall stability at 60° C. meets the petroleum asphalt requirement, such that a service life of the asphalt pavement can be increased.

The invention provides warm mixed asphalt and a preparation method thereof. The warm mixed asphalt provided by the invention is composed of matrix asphalt, plasticized sulfur, an odor removing agent, and a fragrance enhancing agent. The warm mixed asphalt is prepared from components of, by weight: 100 parts of matrix asphalt, 10 to 35 parts of plasticized sulfur, 0.05 to 1 part of the odor removing agent, and 0.02 to 0.5 parts of the fragrance enhancing agent. The plasticized sulfur comprises components of, by weight: 100 parts of elementary sulfur and 5 to 25 parts of a plasticizing agent. With the warm mixed asphalt provided by the invention, influences on human bodies and environmental pollution caused by harmful gases discharged during a sulfur asphalt construction process can be effectively reduced. The asphalt can be warm-mixed with aggregate under a temperature below 135 DEG C, such that energy consumption is reduced.

The invention belongs to the technical field of preparation of insulators for the construction of asphalt pavement road rollers and relates to an insulator for the low-temperature construction of road rollers and a method for preparing the same. The insulator is mainly prepared by mixing silicone oil, compound emulsifier, glycerin, pH regulator, preserving agent and water. The insulator has the advantages of high chemical stability, high high-low temperature resistance, no corrosion to steel wheels, small amount of coating, lasting insulating effect, environment friendliness and the like. By using the insulator, the asphalt mixture pavement is guaranteed to be constructed at the ultralow temperature (15 DEG C below zero), so that the working season is greatly prolonged; and during normal-temperature construction, by using the insulator, the mixing temperature of the asphalt mixture is reduced to 15 to 20 DEG C under the condition of unchanging the compaction degree and the emitted greenhouse gases are reduced in the mixing process and the environment-friendly and energy saving requirements are met.

The invention discloses a preparation method of a high-performance warm-mix regenerated asphalt mixture, which comprises the following steps: extracting and screening an old asphalt mixture, determining the size distribution and asphalt content of the mixture, carrying out three-main-index testing on the asphalt, and evaluating old asphalt performance indexes in RAP; determining the doping proportion of the RAP according to the performance indexes of the asphalt in the RAP, wherein the doping proportion is generally 50-100%, and the doping proportion can be higher as the performance indexes of the asphalt in the RAP are higher; determining the optimal doped new asphalt consumption (OACn) of the asphalt mixture by a conventional asphalt mixture Marshall five-point process; and after calculating the doped new asphalt consumption, detecting according to according to the performance indexes specified in Asphalt Pavement Construction Technique Specifications (JTGF40-2004) by a testing method specified in Highway Engineering Asphalt and Asphalt Mixture Test Specifications (JTGE20-2011).

The invention discloses a warm-mixing high-elastoplasticity bridge expansion joint sealing material and a preparation method thereof. The warm-mixing high-elastoplasticity bridge expansion joint sealing material comprises the following components: petroleum asphalt: SBS (Styrene-Butadiene Block Polymer):SBR (Styrene Butadiene Rubber):resin: stabilizing agents: warm-mixing agents=100:(3-10):(1-5):(0-10):(2-6):(1-5), wherein the resin is petroleum resin or abietic resin; and the stabilizing agents are mixtures of sulphur and TOR (trans-polyoctenamer rubber) stabilizing agents, and the proportion of the sulphur to TOR is 4: (1-2). The joint sealing material obtained through a formula has the characteristics of being a warm-mixing type modified asphalt material which has stability at high temperature, cracking resistance at low temperature, good bonding capacity and very good elastic recovery capacity.

The invention discloses an asphalt pavement regeneration method. The asphalt pavement regeneration method comprises the following steps: (1) milling and crushing an old asphalt pavement, recycling materials of the old pavement to an asphalt tank, heating, and stirring uniformly; (2) adding inorganic binder and organic additive to mixture of step (1), and stirring uniformly; (3) uniformly stirring asphalt regenerant and hot melting asphalt added to the mixture of step (2) so as to obtain recycled asphalt mixture; (4) paving the recycled asphalt mixture, and compressing so as to complete regeneration of the asphalt pavement. The method is simple in process, good in regeneration effect, low in cost and suitable for industrial application. The method disclosed by the invention has wide prospect in the field of asphalt pavement regeneration.

The invention relates to a low-melting-point thermoplastic solid propellant and a preparation method thereof, and belongs to the technical field of composite solid propellants. The propellant is prepared from the following components by mass percent: 55%-70% of oxidant, 10%-20% of thermoplastic elastomer binder, 10%-20% of plasticizer, 5%-20% of metal fuels and 3%-8% of auxiliaries. The prepared low-melting-point thermoplastic solid propellant has the advantages that melting mixing and forming of the thermoplastic propellant at a relatively low temperature lower than 95 DEG C can be realized,process safety of thermoplastic propellant preparation is greatly improved, a curing and cross-linking process in comparison with a thermoplastic propellant is cut out, process flow is shortened, production efficiency is improved, production cost is reduced and repeated processing of waste products can be realized.

A counter tapered thermoplastic elastomer composition comprising: (a) a counter tapered diblock A-[A/B] copolymer with a peak molecular weight from 20,000 to 250,000, which includes a monovinyl aromatic homopolymer block A with a peak molecular weight of at least 8,000 and a counter tapered copolymer block [A/B] with a vinyl content of at least 15 weight percent based on the amount of conjugated diene units in the diblock copolymer; and (b) a block copolymer selected from the group consisting of linear triblock copolymers having a peak molecular weight that is at least about 1.5 times the peak molecular weight of the counter tapered diblock A-[A/B] copolymer described In (a), multiarm coupled block copolymers having a peak molecular weight that is at least about 2.5 times the peak molecular weight of the counter tapered diblock A-[A/B] copolymer described in (a), and mixtures thereof; and (c) wherein the ratio of (a) to (b) in the counter tapered thermoplastic elastomer composition is from about 1:5 to about 5:1. The counter tapered thermoplastic elastomer compositions provide in the applications: i) easy processing such as short dispersion time, low mixing temperature, low viscosity, excellent storage stability; and ii) better reinforcement such as high elastic response, wide range of performance grade, high adherence, higher filler loading capacity, and better compromise between high and low temperature properties; which make them suitable for a broad range of applications such as road paving, roofing, shingles, waterproofing membranes, adhesive tapes and labels, contact and sprayable adhesives, and sealants.

The invention discloses a composite warm-mixed flame-retarding antiskid asphalt tunnel pavement material which includes, by weight, 80-90 parts of aggregate, 5-15 parts of a functional filling material, 4-7 parts of high-viscosity high-elasticity modified asphalt, 0.4-0.7 parts of a warm mixing agent, and 0.2-0.5 parts of mineral fibers. The composite warm-mixed flame-retarding antiskid asphalt tunnel pavement material has a compact framework structure and has reasonable construction depth and high anti-track capability, thereby ensuring antiskid and durable performances of the mixture. The emulsifying-type warm mixing agent is compounded with the functional filling material for comprehensively controlling the mixing temperature of the asphalt mixture. With the composite flame-retarding component, a gradient-temperature flame-retarding effect is achieved. The asphalt tunnel pavement material is antiskid when being spread, is flame-retarding and is low in mixing temperature, and satisfies a special semi-sealed environment.

The invention provides an air conditioner and a control method of air conditioning refrigerants. The air conditioner comprises a compressor, a condenser, a throttling device, an evaporator and a liquid storage tank which are connected through a refrigeration pipeline, wherein a gaseous refrigerant flow path is arranged between the throttling device and the liquid storage tank; a part of a gaseous refrigerant or all the gaseous refrigerant flowing out of the throttling device flows into the liquid storage tank through the gaseous refrigerant flow path; and other refrigerants flowing out of the throttling device flow into the liquid storage tank after flowing through the evaporator for heat exchange. According to the air conditioner, the gaseous refrigerant flow path is arranged, so that a part of the gaseous refrigerants or all the gaseous refrigerant flowing out of the throttling device is enabled to flow into the liquid storage tank through the gaseous refrigerant flow path, so that the dryness of the inlet of the evaporator is reduced, the heat exchange efficiency of the evaporator is improved, and the refrigeration performance of the air conditioner is improved; and besides, the dryness of the inlet of the evaporator is low, so that the divided flow of the refrigerants in the evaporator is relatively good, the refrigerant flowing noise generated by a flow divider is greatly reduced, and a water blowing phenomenon of the air conditioner in a high humidity condition is avoided.

The invention discloses a waste asphalt mixture normal-temperature regeneration modifying agent and a preparation method thereof. Particularly, the waste asphalt mixture normal-temperature regeneration modifying agent comprises the following components in parts by weight: 0-30 part of rubber oil, 30-60 parts of light distillates, 5-10 parts of a polymer, 2-5 parts of a crosslinking agent and 1-5 parts of a surfactant. The regeneration modifying agent is used for producing a regenerative asphalt mixture; the RAP blending rate is high; the blending temperature is low; and the pavement performance of the regenerative asphalt mixture is good.

The invention belongs to the technical field of polyurethane and particularly relates to a once-formed highly-elastic micro-foaming bouncing ball compound and a preparation method thereof. The compound is composed of polyol mixture components and modified isocyanate components. The compound can be used to prepare the highly-elastic bouncing ball by once forming. The preparation method has the advantages that a semi-prepolymerization method is used to prepare the bouncing ball, viscosity of two groups of components are close, mixing temperature is low, materials can be evenly mixed easily, control conditions of the process is simple, and operation is easy; compact surface and foam core can be once formed during formation by using the compound to prepare the bouncing ball, and forming process is simple; and rebounding rate of the microporous bouncing ball prepared by the compound can reach a range of 80-85%.

A thermal processing apparatus including: a cylindrical processing vessel; a support unit to be loaded into and unloaded from the vessel; and a heating furnace surrounding an outer periphery of the vessel, with a cooling space therebetween. The furnace is connected to a cooling-gas introduction unit, including a gas introduction passage to which a blowing fan is connected, for introducing a cooling gas into the cooling space during a temperature lowering operation after a thermal process. The furnace is connected to a cooling-gas discharge unit, including a heat exchanger, a suction fan, and a gas discharge passage, for discharging the cooling gas of a raised temperature from the cooling space. Connected to the gas discharge passage at a position upstream of the heat exchanger is a temperature-lowering gas introduction unit for introducing a temperature-lowering gas to the cooling gas of a raised temperature so as to lower its temperature.

The invention relates to a warm mixing agent and a preparation method thereof and relates to a modifier, and particularly relates to a modifier of asphalt. The warm mixing agent provided by the invention aims to provide the warm mixing agent capable of reducing the mixing temperature of an asphalt mixture and improving the anti-rut capacity and low-temperature bending property of the asphalt mixture and the preparation method thereof. The warm mixing agent comprises 60-90 parts of amide compounds, 1-10 parts of an asphalt anti-stripping agent, 1-10 parts of an asphalt extensibility modifier and 5-20 parts of an elastomer modifier. The warm mixing agent provided by the invention is convenient to use. The warm mixing agent is added into asphalt, so that the mixing temperature of the asphalt mixture can be reduced, and moreover, the anti-rut capacity and low-temperature bending property of the asphalt mixture are improved. The warm mixing agent provided by the invention is used in the field of asphalt modification.

The invention relates to the field of road materials, and discloses a compound asphalt mixture wet-mixing additive and a preparation method thereof. According to the compound asphalt mixture wet-mixing additive, production and construction temperatures of a hot-mix asphalt mixture can be reduced. The compound asphalt mixture wet-mixing additive is characterized by comprising the following components in parts by weight: 20-50 parts of microcrystalline wax, 20-50 parts of stearic acid, 10-20 parts of polyethylene wax, 5-20 parts of EVA (ethyl vinyl acetate) wax and 0-10 parts of plasticizer. The preparation method comprises the following steps of: uniformly mixing the polyethylene wax, the EVA wax, the stearic acid and the plasticizer under the mechanical stirring action, then adding the microcrystalline wax, continuously stirring and uniformly mixing to obtain a mixed dry material; and finally, adding the mixed dry material in a granulating machine melting furnace, heating at a temperature of 120-130 DEG C and melting, then granulating, cooling and drying. According to the compound asphalt mixture wet-mixing additive, the blending temperature of the asphalt mixture can be effectively lowered by about 30 DEG C, and better used road performance can be ensured.

The invention discloses a water-blown warm-mix flame-retardant asphalt mixture and a preparation method thereof. According to the invention, through comprehensive utilization of a water-blown asphalt warm-mixing technology and an asphalt flame-retardation technology, construction temperature of an asphalt pavement is effectively reduced, the safety factor of a tunnel asphalt pavement is increased, and the advantages of energy conservation, emission reduction, greenness, environmental protection, reduction in construction cost, improvement of warm-mixing construction technology for tunnel flame-retardant asphalt pavements and the like are obtained. The invention also provides a design method for the water-blown warm-mix flame-retardant asphalt mixture. The method utilizes the concept of equivalent design of basic mix ratios and technique indexes to improve the traditional design method for the warm-mix flame-retardant asphalt mixture, provides bases for the design of the water-blown warm-mix flame-retardant asphalt mixture and fills a gap in the design method for the water-blown warm-mixed flame-retardant asphalt mixture.

The invention discloses a warm mix agent for reducing high-temperature viscosity of asphalt and a preparation method thereof. Raw materials for preparation of the warm mix agent comprise FT, halogen, aromatic hydrocarbon oil and a catalyst. The FT is high-molecular alkane, whose carbon number is 40-130; molecular weight is 562-1822. The amount of halogen is 0.3-0.5 times the mole number of the FT. Halogen and the catalyst are added, so that a chemical reaction is carried out between aromatic hydrocarbon oil and the FT. The warm mix agent has a warm mixing effect for asphalt, and can improve compatibility between asphalt and the warm mix agent as well as adhesiveness between asphalt and stones. The warm mix agent can effectively reduce high-temperature viscosity of asphalt, reduce mixing and moulding temperatures of an asphalt mixture, enhance softening point and viscosity at 60 DEG C and extension of asphalt, and improve high and low temperature performances of asphalt.

The invention discloses an anti-rut agent composition for a high-performance composite polyolefin asphalt mixture and a preparation method of the anti-rut agent composition. The composition comprises the components in percent by weight: 5-15 percent of polypropylene, 5-25 percent of low-density polyethylene, 5-25 percent of high-density polyethylene, 5-25 percent of linear low-density polyethylene, 1-10 percent of EVA, 0.5-5 percent of dicyclopentadiene epoxy resins, 0.5-2 percent of oleic acid, 0.5-2 percent of linoleic acid, 0.5-2 percent of palmitic acid, 0.5-2 percent of palmitic acid butyl ester, 0.1-2 percent of polyoxyethylene sorbitan monooleate, 0.5-2 percent of oxidized polyethlene wax, 0.1-1 percent of antioxidant (1010), 0.1-1 percent of antioxidant (168) and 0.1-1 percent of coupling agent. The preparation method comprises the steps of uniformly mixing all components by using a high-speed mixing machine and performing mixed granulation by using a high-shear type double-screw extrusion machine. The anti-rut agent composition is used in the asphalt mixture, so that the anti-rut property, the constant water temperature property and the low-temperature anti-cracking performance of the asphalt mixture can be improved, the mixing of the original asphalt mixture is maintained, and the comprehensive performance of the asphalt mixture is improved.

The invention discloses a warm mix asphalt additive, warm mix asphalt, warm mix asphalt mixture, a preparation method and an application. The warm mix asphalt additive comprises 30%-70% of fatty acid amide polyamine or fatty imidazoline polyamine, 20%-55% of aliphatic polyamine ethylene oxide adducts and 10%-15% of vinyl-amine, and the percent is weight percent relative to the total weight of the warm mix asphalt additive. The warm mix asphalt additive can be directly added into the asphalt to prepare the anhydrous warm mix asphalt, the working temperature of the asphalt mixture is effectively reduced, and the warm mix asphalt additive is applicable to different asphalt mixture types. Compared with hot-mixed asphalt mixture of the same type, the temperature can be reduced by 20-50 DEG C, the warm mix asphalt mixture has the advantages of simple process, energy conservation, environmental protection, low cost and the like, the moisture damage resistance of the warm mix asphalt is improved, and the service life of a road is prolonged.