33results about How to "Get rid of high dependence" patented technology

The invention discloses novel thiophenedicarboxylic acid-based copolyester as well as a preparation method and application thereof. The novel thiophenedicarboxylic acid-based copolyester has a structure represented by the following formula: wherein m, n and x are all selected from 1-200, and R is an aliphatic chain or alicyclic ring with a C atom number of 2-20. The novel thiophenedicarboxylic acid copolyester provided by the invention has the characteristics of high visible light transmittance, low melt viscosity, good heat resistance, excellent mechanical property and gas barrier property and the like, and can be widely applied to the fields of barrier films, barrier bottles, fibers, engineering plastics and the like.

The invention relates to a thermoplastic polyester elastomer as well as preparation and application thereof. Specifically, the thermoplastic polyester elastomer is prepared according to a preparationmethod as follows: a component (a) of furandicarboxylic acid and / or an esterified product thereof, a component (b) of aliphatic dibasic acid and / or the esterified product thereof and a component (c) of dibasic alcohol are subjected to polycondensation to obtain the thermoplastic polyester elastomer, wherein the molar amount of the component (a) to (the molar amount of the component (a) plus the molar amount of the component (b)) is 0.3 to 0.7, and the thermoplastic polyester elastomer has a 500% elastic recovery ratio of being equal to or greater than 70%. The invention further discloses the preparation and the application of the thermoplastic polyester elastomer. The thermoplastic polyester elastomer combines excellent toughness, thermal stability, elastic recovery and elongation at break. The method has the characteristics of simple process, low cost, safety, environmental friendliness and the like. The thermoplastic polyester elastomer can be widely used in the fields of automobileparts, toys, textiles and the like.

The invention discloses polyester with high glass-transition temperature and low melting point, a polyester product, and preparation methods and applications of the polyester and the polyester product. The preparation method comprises the following steps: copolymerizing bis (hydroxyethoxy) polycyclic aromatic hydrocarbon, first dibasic acid or ester thereof, second dibasic acid or ester thereof and dihydric alcohol to prepare bio-based polyester with high glass-transition temperature and low melting point, wherein the first dibasic acid is furandicarboxylic acid. According to the invention, the dihydroxyethyl polycyclic aromatic hydrocarbon with excellent rigidity and hydroxyl-terminated high activity and the bio-based polyfurandicarboxylate compound are copolymerized, and rigid alicyclicdiol is introduced to further improve the heat resistance of the copolyester, so the finally obtained polyester has excellent heat resistance and processing fluidity at the same time; the glass-transition temperature is 95-160 DEG C, the melt viscosity within the temperature range of 240-260 DEG C is lower than 1,000Pa.S, and the device can be widely applied to stirring cups of wall-breaking foodprocessers, portable juice makers, noodle makers and other equipment, juicing barrels of juice makers, feeding bottle cup bodies and other products.

The invention discloses a 4-hydroxymethyl-7-oxa bicyclo[2.2.1]hept-5-ene monomer and a preparation method thereof. The preparation method comprises the following steps: carrying out Diels-Alder reaction between biological-based furfuryl alcohol as a raw material and acrylic acid and acrylate in the presence of a polymerization inhibitor; and distilling under reduced pressure to remove the unreacted raw material to obtain the 4-hydroxymethyl-7-oxa bicyclo[2.2.1]hept-5-ene monomer. The preparation method is simple, efficient and fewer in byproducts. The raw material furfuryl alcohol is obtained by fermenting corn cobs, so that the raw material source is extensive, the cost is low and the sustainable development can be carried out. Moreover, the monomer prepared by the preparation method structurally contains hydroxyl and carboxylic acid or carboxylic ester bifunctional groups, and can be extensively applied to the fields of biological-based polyester, epoxy resin, polyurethane, and the like.

The invention discloses a stabilization ponds-ecological corridors-constructed wetland based tail water treatment system, and belongs to the technical field of sewage treatment. The system comprises stabilization ponds (an aerated pond, a facultative pond and an aerobic pond), ecological corridors (1#, 2# and 3#) and a surface flow wetland; and tail water for treatment sequentially goes through the aerated pond, the 1# ecological corridor, the facultative pond, the 2# ecological corridor, the surface flow wetland, the 3# ecological corridor and the aerobic pond, and is discharged. The system uses biological treatment as a main means, is based on the theoretic research on the removal of pollutants through the aerated pond, a trench wetland and the constructed wetland, follows the conversion rule of main pollutants in tail water, optimally combines different types of the stabilization ponds with the constructed wetland, and utilizes the ecological corridors modeled on the trench wetland as a water conveying trench to form a tandem type aerobic-anaerobic reactor in order to promote the effective removal of the pollutants in the tail water.

An intelligent nursing system, comprising at least one or a combination of some of a bed function module (6), a toilet function module (5), a bathing function module (7), a seat function module (2), and a rehabilitation exercise function module (9), as well as a walking and transferring function module (4). Each function module comprises a butt joint (3, 401); the walking and transferring function module (4) and other function modules are configured to be connected by means of the butt joint (3, 401); a user can move by means of the walking and transferring function module (4), and can achieve transferring between the walking and transferring function module (4) and other function modules; the walking and transferring function module (4) further has a lifting capability so as to help the user achieve transferring between the walking and transferring function module (4) and other function modules. The intelligent nursing system enables old people or people with reduced mobility to autonomously complete at least one of nursing activities in daily life, without a nursing staff.

The invention relates to a thermoplastic polyester elastomer as well as preparation and application thereof. Specifically, the thermoplastic polyester elastomer is prepared according to a preparationmethod as follows: a component (a) of furandicarboxylic acid and / or an esterified product thereof, a component (b) of aliphatic dibasic acid and / or the esterified product thereof and a component (c) of dibasic alcohol are subjected to polycondensation to obtain the thermoplastic polyester elastomer, wherein the molar amount of the component (a) to (the molar amount of the component (a) plus the molar amount of the component (b)) is 0.3 to 0.7, and the thermoplastic polyester elastomer has a 500% elastic recovery ratio of being equal to or greater than 70%. The invention further discloses the preparation and the application of the thermoplastic polyester elastomer. The thermoplastic polyester elastomer combines excellent toughness, thermal stability, elastic recovery and elongation at break. The method has the characteristics of simple process, low cost, safety, environmental friendliness and the like. The thermoplastic polyester elastomer can be widely used in the fields of automobileparts, toys, textiles and the like.

The present invention discloses a method for preparing a 2,5-diacyl-furan compound, and the 2,5-diacyl-furan compound is simply and efficiently prepared by acylation reaction of 2,3-dicarboxylic anhydride-7-oxabicyclo [2.2.1] heptyl-5-ene and / or furan and an acylating agent. The method is simple and efficient, short in process, and less in by-products, and the 2,5-diacyl-furan compound prepared by the method is high in purity, and can meet requirements as high-performance polyester, epoxy resin, polyamide, polyurethane and other engineering plastic raw materials and as chemical raw materials and pharmaceutical intermediate raw materials.

The invention discloses a novel thiophenedicarboxylic acid-based copolyester as well as its preparation method and application. The novel thiophenedicarboxylic acid-based copolyester has a structure represented by the following formula: wherein, m, n and x are all selected from 1-200, and R is an aliphatic chain or alicyclic ring with 2-20 C atoms. The novel thiophenedicarboxylic acid copolyester provided by the invention has the characteristics of high visible light transmittance, low melt viscosity, good heat resistance, excellent mechanical properties and gas barrier properties, and can be widely used in barrier films, barrier bottles, fibers and Engineering plastics and other fields.

The invention discloses a heat-resistant flame-retardant polyester, a polyester product, and a preparation method and application thereof. The preparation method of the heat-resistant flame-retardantpolyester comprises the following steps: carrying out copolymerization reaction on a first mixed reaction system containing a phosphorus-containing compound, binary acid and / or binary acid ester, dihydric alcohol and an esterification and / or transesterification catalyst to obtain an intermediate product; and continuously reacting a second mixed reaction system containing the intermediate product,a polycondensation catalyst and a stabilizer under a vacuum condition to obtain the heat-resistant flame-retardant polyester. The phosphorus-containing compound has a structure as shown in the following formula, according to the invention, a phosphorus-containing compound is introduced into a synthesis system; the 2, 5-furandicarboxylic acid-based polyester has the advantages that the glass transition temperature and flame retardant property of the 2, 5-furandicarboxylic acid-based polyester can be effectively improved, so that the formed copolyester has excellent heat resistance and flame retardance, and can be widely applied to the fields of fire-fighting products, kitchen electrical products, food packaging, optics, building materials, decorative materials, automobile manufacturing, barrier films, barrier bottles, fibers, engineering plastics and the like.

The invention discloses a 7-oxabicyclo[2.2.1]hept-5-ene monomer, its preparation method and application. The 7-oxabicyclo[2.2.1]hept-5-ene monomer adopts bio-based furoic acid compound as a raw material, and undergoes a Diels-Alder reaction with acrylic acid and acrylate in the presence of a polymerization inhibitor and a Lewis acid catalyst. Unreacted raw materials were removed by vacuum distillation to obtain 7-oxabicyclo[2.2.1]hept-5-ene monomer. The preparation method of the invention is simple, efficient and has few by-products. The furoic acid compound as a raw material is obtained by oxidation of furfural prepared by a corn cob fermentation method. The raw material has wide sources, low cost and sustainable development. The monomer structure prepared by the invention contains carboxylic acid or carboxylate difunctional groups, and can be widely used in the fields of bio-based polyester, epoxy resin, polyamide, polyurethane and the like.

The invention discloses a polyester with a high glass transition temperature and a low melting point, a polyester product, its preparation method and application. The preparation method comprises: copolymerizing bishydroxyethoxylated polycyclic aromatic hydrocarbons, the first dibasic acid or its esterified product, the second dibasic acid or its esterified product and dibasic alcohol to obtain bio-based high glass transition temperature In the low melting point polyester, the first dibasic acid is furandicarboxylic acid. The present invention uses bishydroxyethoxy polycyclic aromatic hydrocarbons with excellent rigidity and high activity of terminal hydroxyl groups to copolymerize with bio-based polyfurandicarboxylate compounds, and further improves the copolyester by introducing rigid alicyclic diols. Heat resistance, so that the final obtained polyester has excellent heat resistance and processing fluidity at the same time, its glass transition temperature is 95~160°C, and the melt viscosity in the temperature range of 240~260°C is lower than 1000Pa·S , can be widely used in mixing cups of broken wall cooking machines, portable juice machines, noodle machines and other equipment, as well as juice barrels of raw juice machines, milk bottle cups and other products.

The invention discloses a high-end battery-electric-vehicle-mounted dynamic electricity circulation generator set and relates to improvement and innovation of technical equipment of high-end battery electric vehicles with relevant speed per hour larger than 80 km / tg in the field of new energy vehicles. A vehicle-mounted electric driving engine set (30), a mechanical transmission system (60), a plurality of sets of vehicle-mounted kinetic generator sets (40) and a plurality of sets of lithium battery assemblies (50) are technically connected in a butted mode and integrated, electricity (10) and kinetic energy (20) are converted circularly and interactively, a single set of vehicle-mounted generator set and a single set of lithium battery assembly are replaced with the multiple sets of vehicle-mounted generator sets and the multiple sets of lithium battery assemblies, in other words, the single set of vehicle-mounted generator set and the single set of lithium battery assembly are basically abandoned, the multiple sets of vehicle-mounted kinetic generator sets are used for fast generating power so as to basically replace charging through an outdoor fixed-point base station, in other words, the charging through the outdoor fixed-point base station is basically abandoned, consumed electric energy is fast supplemented in time with the energy consumption specific value with power generation amount further higher than power using amount (larger than 16:1), and the critical defects of low energy density, short driving mileage, low charging speed and difficult charging which seriously restrain the process of industrialization are overcome.

The invention discloses a preparation method of 2, 5-diacetyl furan. The method comprises the following steps: carrying out acylation reaction on 2, 3-phthalic anhydride- 7-oxabicyclo [2.2. 1] heptyl-5-ene and an acylation reagent to simply, conveniently and efficiently prepare the 2, 5-diacetyl furan. The preparation method is simple, efficient, short in process and few in byproducts, and the 2,5-diacetyl furan prepared by the method is high in purity and can meet the requirements of being used as a raw material of engineering plastics such as high-performance polyester, epoxy resin, polyamide, polyurethane and the like and being used as a chemical raw material and a medical intermediate raw material.

The invention discloses a preparation method of a 2, 5-diacylfuran compound. The preparation method comprises the following steps: carrying out acylation reaction on 2, 3-dicarboxylic anhydride-7-oxabicyclo [2.2. 1] heptyl-5-alkene and an acylation reagent to simply, conveniently and efficiently prepare the 2, 5-diacylfuran compound. The preparation method is simple, efficient, short in process and few in by-product, and the 2, 5-diacylfuran compound prepared by the method is high in purity and can meet the requirements of being used as a raw material of engineering plastics such as high-performance polyester, epoxy resin, polyamide and polyurethane and being used as a chemical raw material and a medical intermediate raw material.

The invention discloses a bio-based heat-resistant and flame-retardant polyester, polyester products, a preparation method and application thereof. The bio-based heat-resistant and flame-retardant polyester has a structure shown in the following formula: wherein m and n are integers of 1-20, x is an integer of 20-200, R 1 is the residue of a dibasic acid with 3‑20 carbon atoms, R 2 It is the residue of a dihydric alcohol having 2-20 carbon atoms. The preparation method includes: obtaining the bio-based heat-resistant and flame-retardant copolymer by copolymerizing phosphorus-containing aromatic diols synthesized from bio-based lignin-derived vanillin and guaiacol with other dibasic acids and dibasic alcohols. polyester. The bio-based heat-resistant and flame-retardant polyester of the present invention has excellent heat resistance and flame retardancy, can effectively solve the problems of insufficient heat resistance and flame retardancy of existing polyesters, and is used in fire-fighting equipment, baby bottles, water cups, kitchen appliances Products, food packaging, optical fields, decorative materials, automobile manufacturing and other fields have a very wide range of uses.

The invention discloses an ocean engineering module structure welding method based on a VR technology. The method comprises the following steps: digital models of real workpieces are built through 3Dscanning, and corresponding 3D solid models are generated; a real welding process is caught by using a camera, and a projector is used for visual displaying on the 3D solid models; skilled welding workers finish the welding process through observing molten bath images and operating a virtual welding gun; a welding robot finishes real welding through welding parameters of the virtual welding gun; an external monitoring system transfers welding information in the robot welding process to a computer; the computer forms speed-current relation models through welding data; and primary welding workers finish welding through operating a virtual welding device according to the speed-current. The method performs virtual-real welding on ocean engineering module structures, so that profile steel and pipelines in the ocean engineering modules are welded more quickly and accurately, and the personal safety and the welding efficiency are guaranteed in the welding process.

An intelligent weighing device for a transmission shaft assembly belongs to a special measuring tool for off-line detection of the transmission shaft assembly and is characterized in that an electronic scale, an alarm, a first workpiece sensor and a controller are arranged on a rack, two shaft rod supports are symmetrically arranged on a weighing platform of the electronic scale left and right, and first notches are formed in the two shaft rod supports respectively; the detection end of the first workpiece sensor is opposite to the space between the two first notches; when the first workpiece sensor detects the shaft rod of the transmission shaft assembly, the controller repeatedly reads the real-time weight data of the electronic scale, judges that the current data is the actual weight of the transmission shaft assembly, carries out calculation according to the pre-stored data and tolerance, judges whether the weight of the current detected transmission shaft assembly is within a specified tolerance range or not, and sends the judgment result to the electronic scale. The weighing result is directly calculated by the controller, and the step of manual calculation is omitted, so that the weighing result is accurate, and the weighing efficiency is improved.