95results about How to "Suitable for continuous industrial production" patented technology

The invention provides a method for preparing alpha-angelica lactone by levulinate. The method comprises the following steps: an inorganic liquid acid or a solid acid catalyst which is 1 to 10 weight percent of the levulinate is added into the levulinate; the levulinate and the alpha-angelica lactone in a gaseous phase of a reaction system are separated by rectifying at a temperature of between 100 and 150 DEG C with vacuum degree of between 20 and 150mmHg; the levulinate returns to the reaction system; the alpha-angelica lactone is condensed at a temperature of between 60 and 90 DEG C; and the product is obtained through separating and rectifying. The method has the advantages of high selectivity, high purity, and applicability of serialized industrial production.

The invention relates to a microemulsion capsule for tobacco and a preparation method of the microemulsion capsule. As for the capsule, a water-in-oil reversed-phase microemulsion serves as a core material and biomass glue or synthetic resin is taken as a capsule wall material; the capsule looks as a transparent or semitransparent elastic spherical body which is 2-4mm in grain size; and the wall material is 0.1-0.5mm thick and is 0.5-2.5kg in pop strength. With the application of the tobacco capsule prepared by the method, water-soluble essence, alcohol-soluble essence and oil-soluble essence can be covered well; and the obtained capsule core material is stable in properties, and the wall material is good in water retaining performance and moderate in pressure value. With the application of the tobacco capsule, fragrance can be enriched to a great extent and smoke moisture can be enhanced to a certain degree, so that smoking quality is improved; and the microemulsion capsule is simple and easily feasible in preparation process, safe and environment-friendly in materials and applicable to continuous industrial production.

The invention relates to the technical field of spice embedding, in particular to a capsule for a cigarette and a preparing method of the capsule. The capsule comprises a solid case and a liquid core material, wherein the solid case is formed by two layer of thin films; the liquid core material is cladded in the solid case; the core material accounts for 80 to 95 percent of the total mass of the capsule; and the solid case accounts for 5 to 20 percent of the total mass of the capsule. The preparing method of the capsule for the cigarette has the advantages that complicated equipment is not needed; the method is suitable for continuous industrial production; the solid case of the prepared capsule is solid but is not tough, and can be easily broken through being pinched; inner core materials cladded in the solid case can be released after the solid case is broken through being squeezed by external force; the solid case which is not broken through being squeezed can provide good protection for the core material; active ingredients are prevented from volatilizing and going bad; and the retention period is prolonged.

The invention discloses a polystyrene composite material and a preparation method thereof. The polystyrene composite material comprises the following components by weight: 100 parts of polystyrene; 100-170 parts of a metal oxide; 15-23 parts of a metal nitride; 7-10 parts of a toughening agent; 5-6 parts of a coupling agent; 3-4 parts of an antioxidant; and 5-8 parts of a processing aid. The preparation process of the polystyrene composite material provided in the invention is simple, and is suitable for continuous industrial production. Compared with the current polystyrene composite materials, the simultaneously prepared polystyrene composite particles have greatly improved thermal conductivity, good thermal conductivity coefficients, and good mechanical properties, thus having good application prospects.

The invention discloses a low-temperature continuous production process for lithium iron phosphate and a dedicated device therefor. The process comprises the following steps: preparing ferrous oxalate, lithium dihydrogen phosphate, an organic composite carbon source and a composite metal compound which are used as raw materials; mechanically stirring the raw materials in a way of circulation reflux in methanol which is used as a medium; performing fluidized drying on the resulting slurry to obtain a lithium iron phosphate precursor containing the composite carbon source and the composite metal compound; performing micronization and mechanical compaction and then calcining at a low temperature in a protective atmosphere with extremely-low oxygen content; and performing air flow classification and vibratory screening to obtain fine-particle lithium iron phosphate which has uniform grain-size distribution and excellent electrochemical properties and is used as an anode material for lithium ion batteries. The process is simple and easy to operate. The lithium iron phosphate product has excellent electrochemical properties, high tap density and good processing properties. The dedicateddevice has a high production capacity, is suitable for continuous industrial production, does not produce waste, and is environment-friendly and significant in application value.

The invention discloses a method for preparing iminodiacetic acid from iminodiacetic acid disodium salt. The method comprises the following steps: acidifying aqueous solution of the iminodiacetic acid disodium salt by hydrochloric acid until pH of the aqueous solution is a little less than an isoelectric point of the iminodiacetic acid, wherein, the pH equals 1.9-2.1; standing to separate the iminodiacetic acid out; filtering followed by drying to obtain a dry product; adding a fixed volume of the hydrochloric acid to the filtrate until the pH of the filtrate equals 1.3-1.5; condensing the filtrate to separate sodium chloride out, and filtering to remove the sodium chloride; dissolving the iminodiacetic acid disodium salt solid of the second batch in acid pregnant liquor; and repeating the steps to prepare the iminodiacetic acid product. The method has the characteristics of simple and short process route, convenient operation, little wastes (waste gas, waste water and industrial residue), lower equipment investment and energy consumption, and obvious economic and social benefits.

The invention provides a method for irradiating a modified polysulfone ultrafiltration membrane. The method comprises the steps of (1) preparing a sample; (2) treating a photosensitizer solution; (3) treating an ethanol solution; and (4) performing ultraviolet irradiation. According to the method for irradiating the modified polysulfone ultrafiltration membrane, optimal conditions of irradiating the modified polysulfone ultrafiltration membrane are obtained according to the changes of the membrane performances such as the flux and the retention rate the polysulfone ultrafiltration membrane caused by different time periods of ultraviolet irradiation, and the hydrophilicity on the surface of the polysulfone ultrafiltration membrane is effectively improved.

The invention discloses a thin film crystal silicon perovskite heterojunction solar cell manufacturing method, which relates to a semiconductor device manufacturing method particularly suitable for converting optical energy into electric energy, and is a manufacturing method based on an excimer laser crystallization method. The method of the invention comprises steps: the excimer laser crystallization method is used for manufacturing a P-type thin film crystal silicon layer on a transparent conductive substrate, spin coating of a perovskite light absorption layer is carried out on the P-type thin film crystal silicon layer, an electron transport layer formed by dense titanium dioxide is manufactured on the perovskite light absorption layer, a back electrode is manufactured on the electron transport layer formed by the dense titanium dioxide, and finally, a thin film crystal silicon perovskite heterojunction solar cell composed of the transparent conductive substrate, the P-type thin film crystal silicon layer, the perovskite light absorption layer, the electron transport layer formed by the dense titanium dioxide and the back electrode is manufactured. Defects that the layer transfer technique used in the prior art has multiple steps and is complicated, the obtained thin film crystal silicon has a small size, the finished product rate is low, and the thickness of the thin film crystal silicon can not be over thin can be overcome.

The invention belongs to the technical field of macromolecular materials, and relates to a polyphenylene sulfide laminated composite plate material and a preparation method thereof. The polyphenylene sulfide laminated composite plate material comprises the following components in parts by weight: 100 parts of polyphenylene sulfide, 10-60 parts of glass fiber cloth, 10-30 parts of high temperature resistant nylon, and 5-15 parts of a compatibilizer. Compared with the prior art, the polyphenylene sulfide laminated composite plate material overcomes the defect of insufficient interlayer interfacial cohesive force, guarantees a good dipping effect between fibers and resins, obtains the polyphenylene sulfide laminated composite material with excellent comprehensive performance, and has broad application prospects in the aviation and aerospace field; moreover, the polyphenylene sulfide composite material has a quite good toughening effect by adding the high temperature resistant nylon; and in addition, the adopted preparation method has simple molding process, and is also suitable for continuous industrial production.

The invention relates to a composition for preparing flame-retardant liquid silica gel foam. The flame-retardant liquid silica gel foam is characterized by comprising a material A and a material B ata mass ratio of 1: 1; wherein the material A comprises a first hydroxyl vinyl siloxane, a first reinforcing agent, ethylene-silicon resin and a platinum complex; and the material B comprises a secondhydroxyl vinyl siloxane, a second reinforcing agent, hydrogen-containing silicone oil, a flame retardant, hydroxyl silicone oil and a retarder. The composition for preparing the flame-retardant liquidsilica gel foam is easy to control in the foaming process, good in stability and high in reaction rate, the flame-retardant liquid silica gel foam prepared from the composition is uniform in foam holes and has excellent elasticity, and the permanent deformation rate is within 1%.

The invention discloses a method for preparing isocyanate thermoplastic polyurea by using a one-pot method, and belongs to the technical field of polyurethane. The method comprises the following steps: performing an in-situ esterification reaction on diamine and cyclic carbonate, and further performing melting polycondensation, thereby obtaining irregular or crystallized isocyanate thermoplastic polyurea. The method is simple and convenient to operate, efficient, green and environment-friendly and applicable to continuous industrial production, and the obtained irregular and crystallizable polyurea is good in mechanical property.

The invention discloses a preparation method of a PTFE/PFA composite membrane high in porosity. PTFE resin, PFA resin with the mass fraction of 0-30% and auxiliary oil are uniformly blended, subjectedto blank preparation, extruded, rolled, dried, subjected to longitudinal stretching and transverse stretching, sintered and shaped. The preparation method is simple, low in cost and suitable for massproduction. The average aperture of micropores of the PTFE/PFA composite membrane is 0.2-8 micron, the porosity is 80-92%, and the resistance is 30-120 Pa at the flow speed of 5.3 cm/s; when gas containing particles with the particle size of 0.1-0.3 micron passes through the membrane, the particle capture efficiency is 90-99.9%. The membrane can be applied to various fields such as industrial dust removal, air filtration and liquid phase filtration.

A novel fiber-drawing hot bath medium is composed of one or multiple of the following components: high-boiling-point polyol, polyoxyethylene oligomer, polyoxypropylene oligomer, mineral oil and silicon oil. By using the medium, fibers can be uniformly and quickly drawn in a high-multiple manner, and producing of fiber products uniform in structure and performance is facilitated.

The invention discloses a thermal insulation coating. The thermal insulation coating is prepared from the following raw materials in parts by weight: 8-10 parts of foamy carbon with modified sealed holes embedded with hollow nanoparticles, 3-5 parts of a hydrophilic molecular sieve, 30-40 parts of amino-terminated hyperbranched polybenzimidazole, 10-20 parts of sulfonated polybenzimidazole, 30-40parts of an inorganic filler, 2-4 parts of a defoaming agent, 1-3 parts of a dispersing agent and 10-15 parts of a solvent. The invention also provides a preparation method of the thermal insulation coating. The thermal insulation coating provided by the invention is excellent in comprehensive performance, better in thermal insulation effect, better in performance stability and water resistance, stronger in adhesive force with a base material and longer in service life.

The invention discloses a Janus type porous silicon dioxide compound nanoparticle and a preparing method thereof. The method includes the steps of mixing a cationic surfactant, nanospheres and a solvent to form a dispersoid A, adjusting the dispersoid A to be alkaline to obtain a dispersoid B, and conducting the temperature raising reaction after adding a silicon dioxide precursor to the dispersoid B to prepare the Janus type porous silicon dioxide compound nanoparticle. A one-way growth guiding agent is adopted, the Janus type porous silicon dioxide compound nanoparticle is directly induced to be generated in the water dispersoid, the reaction is conducted at a room temperature, the reaction conditions are mind, the size of the nanoparticle is easy to adjust and control, universality is high, and the nanoparticle can be directly applied to other fields.

The invention belongs to the technical field of production of natural rubber, and relates to a concentrated natural latex flocculation method. The concentrated natural latex flocculation method comprises the following steps: firstly, slowly adding concentrated natural latex in a seawater-like flocculating agent under the condition of stirring, after addition of the concentrated natural latex is completed, keeping stirring for 20-40 min, reacting the concentrated natural latex and the seawater-like flocculating agent under set conditions, and then naturally cooling to the temperature of 15-35 DEG C to obtain gel blocks; secondly, cleaning the gel blocks by using 300 ml of deionized water; and finally, successively placing the gel blocks in an open mill and a drying machine for dewatering and drying separately to obtain natural rubber. The concentrated natural latex flocculation method has the advantages that firstly, the seawater-like flocculating agent is low in price, and is environmentally friendly, secondly, the requirements for equipment are low, the equipment are conventional equipment, reaction conditions are mild, the equipment are not corroded, thirdly, in the technologicalprocess, irritating odor is avoided, influences to operators are small, and the method is environmentally friendly, and fourthly, influences of factors such as weather, the quality of the concentrated natural latex and latex stopping period to continuous production of the natural rubber are overcome.

The invention belongs to the technical field of high-molecular materials, and particularly relates to a polyetheretherketone/polyimide/polyphenyl thioether ternary alloy and a preparation method thereof. The polyetheretherketone/polyimide/polyphenyl thioether ternary alloy is prepared from the following components in parts by weight: 5-90 parts of polyetheretherketone, 5-90 parts of polyimide and 5-90 parts of polyphenyl thioether. The preparation method comprises the following steps of: weighing all the components, and carrying out heat drying; stirring the obtained components in a high-speed stirrer, and uniformly mixing; and adding the obtained uniformly mixed materials to a double-screw extruder, extruding, granulating, cooling, dicing, and drying. The polyetheretherketone/polyimide/polyphenyl thioether ternary alloy disclosed by the invention has the advantages that the defect of property limit in an existing single material is overcome, the cost is reduced, the integrated advantage of the materials are better exerted, the defect of high price of the single material is overcome through blending and compounding and the cost is reduced. The preparation method disclosed by the invention is simple in forming process and suitable for continuous industrial production.

A technical scheme adopted by the invention is a method for modifying a polysulfone ultrafiltration membrane by ultraviolet irradiation. The method includes the following steps of: (1) sample preparation; (2) photosensitizer solution treatment; (3) ethanol solution treatment; and (4) ultraviolet irradiation. Based on changes in membrane properties like flux and retention rate caused by different UV light irradiation time on the polysulfone ultrafiltration membrane, optimum conditions for ultraviolet irradiation modification on the polysulfone ultrafiltration membrane are obtained, so as to effectively improve the surface hydrophilicity of the polysulfone ultrafiltration membrane.

The invention discloses a PTFE composite glue blocking film for LCP high-temperature lamination, which is characterized in that the PTFE composite glue blocking film sequentially comprises a first release film layer, a first adhesive layer, a high-temperature glue blocking layer, a second adhesive layer and a second release film layer from top to bottom, the first adhesive layer and the second adhesive layer are independently formed by a high-temperature adhesive; and the high-temperature glue blocking layer is a PTFE/PE/hydroxyl-terminated methyl vinyl fluorosilicone oil blended film layer. The invention also provides a production process of the PTFE composite glue blocking film for LCP high-temperature lamination. The PTFE composite glue blocking film for LCP high-temperature laminationdisclosed by the invention is remarkable in release and glue blocking effects, excellent in mechanical property, long in service lifetime and good in high-temperature resistance.

A synthesis reactor for producing carbon nanotubes. The reactor includes a main reactor, a feeder, a settler, an air inlet device, and a product outlet. The main reactor communicates with the settler in the form of a communicating vessel. The feeder communicates with the settler via a catalyst inlet. The air inlet device is disposed under the settler. The wall of the main reactor is provided with a heat exchanger. The product outlet is disposed at the lower part of the main reactor. A method for producing a carbon nanotube, includes: 1) drying red mud for 1 to 4 hour(s) at the temperature of between 101° C. and 109° C.; 2) smashing and sieving the red mud through a 200-mesh sieve to yield a catalyst; and 3) adding the catalyst to a synthesis reactor.

The invention provides a coking-resistant biomass combustor. The coking-resistant biomass combustor comprises a combustion furnace, a feeding system, an air supply system and an intelligent control system. A combustion chamber, a setting chamber and a chain grate stoker are arranged in the combustion furnace. The chain grate stoker is arranged between the combustion chamber and the setting chamber and is driven by the motor to conduct uniform motion. A nozzle is arranged on one side of the combustion chamber and the other side of the combustion chamber is connected with the feeding system. The feeding system comprises a hopper and a spiral feeding machine. The air supply system comprises a fan and air ducts used for air supply. The air ducts comprise the first air duct, the second air duct and the third air duct. The biomass combustor is provided with the chain grate stoker. Biomass fuel is combusted on the chain grate stoker so that under the condition that generated coke is not cooled, the coke can also fall into the setting chamber along with the uniform motion of the chain grate stoker and the potential safety hazard that coking on the chain grate stoker is generated can be eliminated. Meanwhile, three-time air supply is adopted, so that the fuel is combusted more thoroughly and the combustion efficiency is improved.