146results about How to "Low production temperature" patented technology

Provided is a temperature-adjusted and modified recycled ASCON composition for reusing 100% of waste ASCON for road pavement, and a method for manufacturing same, wherein the composition is used in asphalt pavement as a material for the wearing course, surface course, binder course, and base course, and the method comprises: feeding 100 wt % of waste ASCON aggregate having up to a 53 mm particle size distribution into a mixer via a feeding inlet for new aggregate; adding 0.1 to 20 wt % of a recycling modifier and 0.1 to 20 wt % of a temperature-adjusting additive to the waste ASCON via the feeding via the inlet for new aggregate; and homogeneously mixing said materials at 5 to 180 DEG C for 0.5 to 3 minutes. The recycling modifier improves the physical properties of recycled ASCON, while the temperature-adjusting additive adjusts the temperatures for producing and constructing recycled ASCON. The present invention may provide economic, social and technological conveniences by improving the overall recycling technology of waste ASCON. The conveniences may be achieved by virtue of: cost-saving in production by using only waste ASCON without any new materials; saving waste disposal costs; preventing the destruction of nature to obtain aggregate; reducing the consumption of new asphalt; preventing environmental pollution through the reuse of waste products; preventing the early occurrence of plastic deformation and fatigue cracks due to improving the quality of the recycling modifier; economic benefits from the prolonged lifespan of road pavement; the possibility of being used as a material for the wearing course and surface course of major roadways; saving energy in the production and construction of recycled ASCON by adding the temperature-adjusting additive; and reducing greenhouse gas emissions.

The invention relates to a high-strength sulfur-tolerant methanation catalyst and a preparation method thereof. The catalyst uses magnesium aluminate spinel as a carrier and comprises the following active components: on the basis of the total amount of the catalyst, 0.2 to 20% of cobalt in terms of CoO and 1 to 30% of molybdenum in terms of MoO3, with the balance being an active auxiliary agent. The preparation method for the catalyst is a kneading or immersion method. According to the invention, production temperature for magnesium aluminate spinel is decreased, so production cost is reduced; generation of nitrogen oxide in the process of production is avoided, so the problem of environmental pollution is overcome. The catalyst prepared in the invention can be used at a pressure no more than 6.0 MPa and has high strength and strength stability.

The invention discloses a silicane crosslinked low-retraction polyethylene plastic and its preparation method and use, wherein the constituents include linear low density polyethylene, low density polyethylene, high-density polyethylene, ethylene copolymerized resin, silicane cross linking agent, hydroperoxides cross linking agent, processing auxiliary agent, anti-oxidant, metal deactivator and catalyst.

The invention discloses a production method of originally-ecological cold pressing peanut oil and relates to a production technology of vegetable oil materials. In the production method, a low-temperature cold pressing production process is used, the process from the feeding of raw materials into the production line to the peanut oil extraction is a continuous production line, the raw materials are quickly dried and cooled and are subjected to the low-temperature cold pressing by a twin-screw oil press for two times; and peanut kernels are chosen after removing red skin. The production method comprises the following process steps of choosing, grading, drying and cooling, removing red skin, crushing, softening to extract grease, primary cold pressing, secondary cold pressing, primary filtration and secondary filtration, so the finished product of peanut oil can be obtained. The invention has the advantages of strong continuousness of process flow, low temperature of production process and high oil yield; and in addition, nutrients of peanut oil and peanut cakes are not influenced and the original flavor can be retained.

The present invention is refractory magnesia alumina spinel material and its production process. The production process includes mixing gamma-alumina in 65-77 wt% and light burnt magnesia in n23-35 wt%, forming the mixture at 200-280 MPa, and sintering at 1600-1800 deg.c for 2-5 hr. The gamma-alumina has alumina content not less than 98 %, and the light burnt magnesia has MgO content not less than 98 %. The present invention adopts gamma-alumina with production temperature higher than that of alpha-alumina, higher activity, higher Al2O3 content and crystal structure similar to that of magnesia alumina spinel material, and this is favorable to synthesizing compact spinel, can lower the sintering temperature of spinel greatly and lower cost. The present invention may be used as refractory material alone and added into other material to raise the performance. The prepared magnesia alumina spinel material has relative density of 95 %.

A process for manufacturing asphalt is disclosed. The process comprises the steps of : (i) heating bitumen; (ii) heating aggregate; and (iii) mixing the hot bitumen with the hot aggregate in a mixing unit to form asphalt. From 10 to 200 wt % of sulphur, based upon the weight of the bitumen, is added in at least one of the steps (i), (ii) or (iii) and from 0.1 to 20 wt % of paraffin wax is added in at least one of the steps (i), (ii) or (iii).

The invention belongs to the technical field of high-performance resin matrix composite materials, and particularly relates to fast curing resin for fiber prepreg and a preparation method thereof. The fast curing resin is prepared from, by weight, 80-100 parts of components A, 4-8 parts of curing agents B and 2-6 parts of promoters C, and the components A are composed of glycidyl ether-type epoxy resin, toughened epoxy resin and phenolic epoxy resin. By the adoption of the fast curing resin for the fiber prepreg and the preparation method thereof, the forming time of carbon fiber / epoxy resin is greatly reduced; the preparation temperature of the prepreg is reduced, the forming time is shortened, the energy consumption is greatly saved, and the production efficiency is improved; a modified organic urea promoter and an imidazole promoter are adopted to compound, the gel time of the resin is greatly shortened, the overall strength of the resin is equal to that of ordinary resin, and the overall performance of composite materials is not affected.

The invention relates to a continuous production method of high-content high-optical-purity lactate. The continuous production method of high-content high-optical-purity lactate includes the steps of adding catalyst in lactic acid to allow for polycondensation to obtain lactic acid oligomer with 1000-2500 molecular weight; adding catalyst into the lactic acid oligomer to allow for depolymerization to obtain crude lactide; and refining the crude lactide, and subjecting the refined lactide and organic alcohol to full-reflux reaction to obtain lactate. The continuous production method is simple in process, easy and simple to operate and suitable for industrial production and application. The materials can all be utilized. No 'three wastes' emission occurs. Content of the synthetized lactate is more than 99.5%, and optical purity of the lactate can reach more than 99%.

The invention relates to a heat-insulation flame-retardant asphalt shingle and a preparation method thereof. The asphalt shingle comprises a glass fiber body, a modified asphalt coating, a facing material layer and an isolation material layer; the modified asphalt coating adopts the following raw material formula in percentage by weight: 30 percent to 50 percent of 10# petroleum asphalt, 5 percent to 10 percent of 90# road asphalt, 1 percent to 3 percent of a polyolefin processing modifier, 15 percent to 25 percent of magnesium hydroxide, 6 percent to 12 percent of rubber powder and the balance of filling; the facing material layer adopts the following raw material formula in percentage by weight: 30 percent to 40 percent of hollow ceramic microbeads, 2 percent to 5 percent of powder butadiene styrene rubber and the balance of color sand. The asphalt shingle disclosed by the invention has excellent fireproof, flame-retardant, heat insulation and heat preservation effects, aging resistance and low flexibility, has both decoration performance and attraction performance and is low in cost.

The invention discloses a dendritic iron nitride powder and a preparation method thereof. The microstructure of the dendritic iron nitride powder has anisotropy, is in a dendritic shape, and is composed of a micron-scale trunk structure and a nano-scale branch structure. The dendritic iron nitride powder is composed of a gamma'-Fe4N or epsilon-Fe3N single phase, or any two or more of gamma'-Fe4N, epsilon-Fe3N and Fe. The length of the micron-scale trunk structure is 3-10 mu m, the length of the nano-scale branch structure is 200nm-2 mu m, and the diameter of the branch structure is 50-400nm. Dendritic ferric oxide used as a precursor is subjected to a reduction nitriding one-step process to obtain the dendritic iron nitride powder. The iron nitride powder can implement special optical, electric, magnetic, catalytic and other physicochemical properties which can not be implemented by the common spherical iron nitride powder, and especially has important application value in the field of stealth materials.

The invention discloses a production method of carboxymethyl cellulose acetate butyrate and aims to provide a continuous production process of carboxymethyl cellulose acetate butyrate that overcomes the existing difficulty that carboxymethyl cellulose acetate prepared by a traditional kneader method is inapplicable to the preparation of carboxymethyl cellulose acetate butyrate. The production method includes sodium carboxymethyl cellulose preparation, acidification, activation, esterification and purification. The production method has a short production period, the temperature is low, unit energy consumption is low, loss of raw materials is low, an operating process is simple, and manufacturing cost is greatly reduced; waterborne overlay coatings prepared based on the carboxymethyl cellulose acetate butyrate meet the requirement on environmental protection, are less harmful to the environment and human body and have excellent performance, and in the face of the requirement of automobile and aviation industries expanding day by day on waterborne overlay coatings, the carboxymethyl cellulose acetate butyrate has a promising application prospect and can also be made into different types of products according to different requirements, meeting requirements of a wider range.

The invention discloses special rubber powder for a non-cured rubber asphalt waterproof coating and a preparation method thereof. The special rubber powder is prepared from, by weight parts, 50-65% of tire rubber powder, 20-40% of butyl rubber powder, 0.1-1.5% of activator, 0.1-1.0% of viscosity reducer and 5-15% of separant. The preparation method comprises the following steps: 1) stirring the tire rubber powder and the butyl rubber powder; 2) heating the activator and spraying the activator to the rubber powder obtained in the step 1), and then performing stirring and pre-activation; 3) mixing the pre-activated rough rubber powder obtained in the step 2) with the viscosity reducer and the separant, forming fine rubber powder through grinding, sieving the fine rubber powder, and performing packaging to obtain the finished product. Through the compounding of the waste tire rubber powder and the butyl rubber powder, the performance can meet the creep property, cohesiveness, self-healing property and ageing resistance requirements of the non-cured rubber asphalt waterproof coating. The added amount of plasticizer and polymerization modifiers is reduced effectively, and the cost can be reduced by over 10%.

The invention discloses a method for producing a CdS / CdTe solar cell by a magnetron sputtering method, which is characterized by comprising three parts of forming a CdS / CdTe film, thermally processingCdC12 and making a back electrode. CdS, CdTe, CdC12, ZnTe:Cu and Ni are respectively plated on a clean and photoetched conductive glass workpiece via control of voltage, power source, air pressure and distance and control of the quality of the film, so as to form an integral cell. The performance test is as follows: a small area of 0.05 cm<2>, a short circuit current of 27mA / cm<2>, an open circuit voltage of 0.82V per monocle, a filling factor of 72 percent and a conversion efficiency of 14.2 percent; a large area of 200cm<2L (20*100 cm), a short circuit current of 21mA / cm<2>, an open circuitvoltage of 0.63V per monocle, a filling factor of 66 percent and a conversion efficiency of 8 percent.

This invention relates to the preparation of a nanometer silicate long persistence illuminate material, and this invention applies collosol-gelatum technology. Silicate is used as base material, and Eu2+ is used as activating agent, and Dy3+ is assistant activating agent, and boracic compounds is added to improve the performance of afterglow, so the invention is composed by silicate, Eu2+, Dy3+ and boracic compounds. Its molecular formula is Sr2-x-yMgSi2O7: Eux, Dyy, with 0.001 C09K 11 / 59 1 5 1 2006 / 11 / 8 1948426 2007 / 4 / 18 000000000 Tianjin Univ. Tianjin 300072 Ji Huiming Lv Ying Xu Mingxia wangli 12201 The Patent Agency of Tianjin University Qilitai, the City of Tianjin 300072

The invention relates to the systemic insecticide fipronil in conjunction with a rodenticide used for manufacture of a bait composition to provide a lethal effect on fleas and / or ticks and a host rodent, following ingestion of the bait composition by the host rodent. Preferred rodenticides are brodifacoum, difethialone, flocoumafen, bromadiolone and mixtures thereof. The invention also relates to rodenticidal bait compositions and to a method of killing ticks and a host rodent by providing for ingestion to the rodent, a bait composition comprising an effective amount of a rodenticide and an acaricidally effective amount of fipronil.

The invention provides a method for continuously extracting effective components in oriental cherries by using supercritical carbon dioxide. The method comprises the following steps of finely grinding raw materials by using 20-50KHz ultrasonic waves, then, extracting the raw materials at the temperature of 32-90 DEG C and the pressure of 8-60MPa for 1-2h by using the supercritical carbon dioxide, and extracting the raw materials in a supercritical state for 1-2h by using 40-100% ethanol as an entrainer to obtain a safe, pollution-free and high-quality oriental cherry extract, wherein the weight of the entrainer is 1-1000% of the weight of the raw materials, a separation kettle I has the pressure of 5-12Mpa and the temperature of 32-90 DEG C, and a separation kettle II has the pressure of 4-6Mpa and the temperature of 30-50 DEG C. Due to the adoption of supercritical equipment with double extraction kettles, the continuous extraction can be realized, the production period can be shortened, and the production efficiency can be increased. The method provided by the invention is efficient and safe, incapable of damaging active components, high in repeatability, short in process flow and convenient in operation.

The invention provides a preparation method and applications of pig spleen transferfactor. According to the preparation method, frozen-breaking, freeze thawing breaking, and centrifugal process are combined for transferfactor production, yield is guaranteed, and at the same time production temperature is reduced, and the activity of the transferfactor can be guaranteed preferably. And in addition, the prepared transferfactor contains no protein, is a small molecular peptide, possesses no pyrogen, is a widely used immunomodulator, is capable of increasing vaccine titer, and can be used for improving animal immunity and improving production performance; the activity is not influenced by pancreatic enzymes; and no toxic reaction is caused. When the pig spleen transferfactor is combined with vaccine, animal immunity can be improved, vaccine titer is increased at the same time, body immune response period is shortened, and antibody lasting time is prolonged.

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 discloses a microscopic layered interlocked nanocrystalline ceramic corundum abrasive and a preparation method thereof. According to the invention, Al(NO3)3.9H2O is taken as a raw material, PEG1000 is taken as a dispersant, self-made alumina seed crystal accounts for 0.40-0.50% of mass fraction of the raw material, an applied additive accounts for 0.15-0.75% of mass percentage content of the raw material, the raw material composition of the additive with the mass percentage content of the raw material comprises 0-40% of Y(NO3)3.6H2O, 0-40% of Ce(NO3)3.6H2O, 0-50% of CaF2, and 20-65% of C16H36O4Ti. The method controls the microstructure characteristic of the ceramic corundum abrasive, compact layered crystal grains which are mutually interpenetrated are uniformly arranged in the corundum abrasive, the average size of a radius-length of the crystal grains in the abrasive particles is between 600-1300 nm, and the thickness of the crystal grain sheet layer is between 50 nm and 280 nm; and the radius-thickness ratio of the crystal grains (fineness ratio thickness) is between 3 and 11. By controlling a microscopic structure, the mechanical properties such as fracture toughness, the compressive strength and self-sharpening performance of the corundum abrasive are increased; and the single particle compressive strength can reach 41N.

This invention discloses a method for producing biodiesel oil. The method comprises: (1) adding water, sulfuric acid, oleic acid and sodium dimethylbenzenesulfonate into animal oil, plant oil and / or waste oil to prepare crude fatty acids; (2) dehydrating to obtain anhydrous fatty acids; (3) adding methanol and sulfate catalyst, and esterifying to obtain crude biodiesel oil; (4) washing with water, decoloring, dehydrating, and filtering to obtain refined biodiesel oil. The method has such advantages as simple process, low equipment investment, saved energy consumption, high resource utility, low cost, and little pollution.

The present invention relates to bitumen additive mixtures, their use and application for the fabrication of asphalt mixtures used in pavement and waterproofing, and more specifically for construction, repair and maintenance of sidewalks, roads, highways, parking lots or airport runaways and service roads and any other rolling surfaces.

The invention discloses a preparation method for cobalt nanoparticles. According to the preparation method, cobalt nitrate is used as a raw material, low molecular alkylol amine is used as a reducing agent, vinyl pyrrolidone is used as a surfactant and a stabilizer, and absolute ethyl alcohol, absolute methyl alcohol or absolute propyl alcohol is used as a solvent; and the preparation method comprises the following steps of: dissolving the materials respectively and mixing uniformly; reacting with stirring under the temperature condition of 60-80 DEG C until the color of reaction solution becomes stable dark yellow; naturally cooling to room temperature; and concentrating and drying to obtain spherical cobalt nanoparticles. The method provided by the invention has the advantages of low toxicity in production, low production temperature, simple production process, simple equipment and low production cost; and the obtained cobalt nanoparticles are spherical and have high dispersibility and average particle diameter of not greater than 10 nm.

The invention relates to an energy-saving emission-reducing type asphalt mixture and a preparation method thereof and belongs to the technical field of engineering. By adopting the energy-saving emission-reducing type asphalt mixture, the demands of the asphalt mixture on environment temperature can be reduced, the annual construction time can be prolonged, better compaction function can be provided, the service life of a pavement is prolonged and effective guarantee for safe driving is provided; by adopting the energy-saving emission-reducing type asphalt mixture, a lot of fuel oil can be saved, and the discharge of greenhouse gas is reduced, so that the environment protection cost can be reduced and economical effect is more obvious; in addition, by applying the energy-saving emission-reducing type asphalt mixture, good social effect for establishing Chinese resources-saving society is provided, the discharge of carbon dioxide can be reduced, poisonous gases such as carbon monoxide, sulfur trioxide and nitric oxide also can be greatly reduced, and extremely important practical significances for saving social sources and protecting environment are provided.

The present invention provides an odorless asphalt mixture, which comprises the following raw materials by weight: 40-60 parts of asphalt, 850-950 parts of aggregate, 20-100 parts of mineral powder, 0.2-1 part of an odor inhibitor, and 0.1-0.5 part of an interface active agent. According to the present invention, the odorless asphalt mixture acts through the odor inhibitor and the interface activeagent so as to effectively inhibit the formation and volatilization of H2S, SO2, NOX and other asphalt flue gases during asphalt mixture production and construction and significantly eliminate the odor, wherein the asphalt performance is not significantly changed; and the odorless asphalt mixture has characteristics of environmental protection, energy saving, consumption reducing, high cost performance ratio, convenient construction and the like. The present invention further provides a preparation method of the odorless asphalt mixture.

The invention belongs to the field of silicon carbide nanomaterials, and particularly relates to a preparation method of a silicon carbide nanomaterial. The method comprises the steps of mixing resorcinol, formaldehyde, deionized water and sodium carbonate according to a certain molar ratio to prepare resorcinol-formaldehyde sol; mixing tetraethoxysilane, ethanol, deionized water and hydrochloric acid according to a certain molar ratio to prepare silicon dioxide sol; mixing the resorcinol-formaldehyde sol with the silicon dioxide sol according to a certain mass ratio to prepare resorcinol-formaldehyde / silicon dioxide composite aerogel; grinding resorcinol-formaldehyde / silicon dioxide composite aerogel powder and cobalt nitrate according to a certain ratio to obtain an un-purified sample; and removing carbon and silicon dioxide from the un-purified sample to prepare a beta-silicon carbide nanomaterial. Through the preparation method, the problems that a carbon source and a silicon source are difficult to mix evenly, the raw material utilization rate is low and the yield is low in the process of preparing the silicon carbide nanomaterial are solved.

The invention discloses a coating and a preparation method thereof as well as a modified asphalt waterproof roll. The coating is prepared from the following components in parts by weight: 10 to 50 parts of high-grade straight-run distillation petroleum asphalt, 10 to 50 parts of low-grade matrix asphalt, 5 to 40 parts of a macromolecular sizing material, 5 to 50 parts of a rubber powder sizing material, 1 to 20 parts of tackifying resin, 0.0001 to 0.02 part of graphene and 5 to 40 parts of filler. According to the coating, straight-run distillation asphalt with a relatively high grade is refined by adopting aryl hydrocarbon heavy oil and is used for pre-swelling difficult-to-swell macromolecular materials including SBS (styrene-butadiene-styrene block copolymer), rubber powder and the like. The graphene is added and high-thermal conductivity of the graphene is utilized so that the temperature is more uniform in a coating processing process and the processing efficiency is improved; theheating efficiency during hot-melt construction is improved; the emission of pollutants in the construction process is reduced and the ageing performance of a product is improved.

The invention relates to an asphalt mixture additive and a preparation method thereof. The asphalt mixture additive comprises the following components in parts by mass: 10-20 parts of a polymer, 5-10 parts of a cross linker, 10-20 parts of padding, 0.5-2 parts of a smog inhibitor, 1-2 parts of a plasticizer, 0.1-1 part of an antioxidant and 50-70 parts of matrix asphalt, wherein the matrix asphalt is one of Shell 70#, Shell 90#, SK70# or SK90#. Compared with the prior art, the asphalt mixture additive has the advantages that the anti-rutting performance and water damage resistance of an asphalt mixture can be significantly improved, the low-temperature cracking resistance and ageing resistance of asphalt concrete can be effectively improved, and the service life of asphalt roads is prolonged; meanwhile, the asphalt mixture additive can substitute about 15-25% of asphalt raw materials in the asphalt mixture, so that the production temperature is reduced to 140 DEG C, then the smoking phenomenon in the production and spreading processes is effectively reduced, and the asphalt mixture additive is energy-saving and environment-friendly; and the production method is simple, low in cost and suitable for industrialized production.

The invention discloses a warm mix polymer modified asphalt mixture and a preparation method thereof, wherein the mixture comprises 4.0-6.0 parts of a warm mix polymer modified asphalt, 1.0-3.0 parts of ore powder, and 91.0-95.0 parts of an aggregate, the warm mix polymer modified asphalt comprises 1-7 parts of a warm mix agent, 2-5 parts of a polymer, 88-97 parts of matrix asphalt, and sulfur, and the sulfur accounts for 0.01-0.07% of the total mass of the warm mix agent, the polymer and the matrix asphalt. The warm mix agent preparation method comprises: under the effect of a catalyst, carrying out a reaction on a macromolecule alkane and a halogen to obtain an intermediate; obtaining an aromatic hydrocarbon complexing component from aromatic hydrocarbon oil and a complexing compound under the effect of a catalyst; and introducing the aromatic hydrocarbon complexing component into the intermediate, carrying out a reaction, and aging to obtain the warm mix agent. According to the present invention, by adding the warm mix agent to the asphalt in the mixture, the warm mix effect is provided for the asphalt, the high temperature performance and the low temperature performance of the asphalt are considered, the thermal stability of the asphalt is improved, the aging resistance is improved, the thermal aging of the asphalt is reduced, and the harmful gas generation is reduced.

The invention discloses a bottom plastering gypsum powder, which belongs to a building material and solves the problems of high energy consumption in cement production and reduction of the use area due to high consumption when the gypsum powder is used as a building construction material. The invention relates to a bottom plastering gypsum powder which is prepared from the following raw materials in parts by weight: 20-60 parts of semi-hydrated gypsum powder, 10-40 parts of anhydrous gypsum powder, 1-10 parts of fly ash, 1-20 parts of quartz sand, 0.1-2 parts of polyvinyl alcohol (PVA), 0.5-2 parts of carboxymethyl cellulose (CMC), 0.1-0.5 part of methyl cellulose (MC) and 0.1-2 parts of citric acid. The components are pulverized, ground and mixed for 10-60 minutes or subjected to secondary stirring to obtain the bottom plastering gypsum powder. The bottom plastering gypsum powder has the advantages of low energy consumption, simple preparation method, safe and harmless product and wide application range.