524results about How to "Increase responsiveness" patented technology

The invention relates to a high-performance halogen-free flame retardant ABS modified resin and a preparation method thereof. The resin comprises the following components with the content (in parts by weight): 100 ABS resin, 4-30 polyamide, 5-25 phosphate fire retardant, 0.1-0.5 anti-drippage agent, 5-10 toughening agent, 1-5 nano filler, 1-5 compatilizer, 0.2-1 antioxidant, 0.1-0.5 light stabilizer and 1-5 processing agent. Compared with the prior art, the invention has reasonable technique, and overcomes the defects of poor flame retardant property and low impact strength of the existing halogen-free flame retardant ABS; and the invention adopts a novel high-efficiency halogen-free flame retardant compounding synergism technology, a novel polyamide coal-forming agent, the high-efficiency synergism between organic and inorganic fire retardants, and the master batch method processing technique, thus endowing the resin with high fire resistance on the basis of improving the original good performances (especially the impact performance) of the ABS resin, and having wide application prospect.

The invention discloses a preparation method and an application of an acrylate heterozygotic emulsion. In the invention, the acrylate heterozygotic emulsion is synthesized by adopting a seed emulsion polymerization process and combining a process of instantly neutralizing and segmentally adding polar monomers. The acrylate heterozygotic emulsion comprises macroparticles consisting of polymers P2 rich in hydroxyl groups on a surface layer and microparticles consisting of polymers P1 rich in carboxylate on the surface layer. Compared with a conventional hydroxy acrylate emulsion, the acrylate heterozygotic emulsion has smaller mean grain size and wider grain size distribution on emulsion particles. The acrylate heterozygotic emulsion can be adopted to prepare aqueous bi-component polyurethane wood coatings, and a coating layer of the coating has excellent property of resisting water and solvents, high crosslinking density and hardness, good mechanical property, scratching resistance and wear resistance. The acrylate heterozygotic emulsion has compact coating structure, high glossiness and better combination property, and not only can be applied to high-grade wood coatings, but also can be applied to automotive refinish paint, metallic anti-corrosion paint, other industrial protective paint, and the like.

One aspect of the invention relates to cooled internal EGR. Cooled internal EGR is achieved by selectively admitting exhaust to an intake manifold. A heat exchanger is used to cool the exhaust within the intake manifold. Another aspect of the invention related to an intake manifold adapted for internal EGR cooling. The manifold has a bulge to retain exhaust, whereby the exhaust admitted to the intake side for internal EGR generally does not flow past the intake manifold and significantly heat or foul any upstream portion of the system. The manifold further includes a heat exchanger for cooling the exhaust. A further aspect of the invention relates to a method of reducing the response time of an EGR system. The method comprises providing a temporary increase in an internal EGR rate during a transition from a first to a second external EGR rate.

A torque detecting device includes a pair of fixed portions are provided on a rotating shaft to have a predetermined distance in an axially longitudinal direction, a permanent strain portion which changes a magnetostrictive characteristic corresponding to an applied torque is provided between the fixed portions, and a multilayered solenoid winding coil for electrically detecting a magnetostrictive effect produced in the permanent strain portion is provided around the permanent strain portion. The permanent strain portion is a portion in the rotating shaft to which a permanent strain is applied by twisting the fixed portions.

The invention provides a high-temperature resistant halogen-free fire-resistant adhesive used in flexible copper-clad baseplates and a preparation method thereof. The adhesive consists essentially of aromatic amine modified bismaleimide performed polymer, phosphorus epoxy resin, chemigum, phenolic resin, inorganic filler, a curing catalyst and a solvent. The preparation method comprises the steps that: first of all, toluene is taken as the solvent; under the reflow temperature of the toluene, aromatic diamine, aniline and bismaleimide polymerize to obtain a aromatic amine modified bismaleimide performed polymer solution which is then added with the phosphorus epoxy resin and then added with the chemigum, the phenolic resin, the inorganic filler, the curing catalyst and the solvent after chemical reaction or physical mixture so as to form the high-temperature resistant halogen-free fire-resistant adhesive which is used for bonding the polyimide film and copper foil of the flexible copper-clad baseplate; the prepared flexible copper-clad baseplate has excellent heat resistance, flame resistance, dimensional stability and comparatively high peeling strength.

If a bus current a bus current detector 11 detects exceeds a current cutoff value, an overcurrent detector 12 supplies a gate driver 14 with an open signal for turning off switching elements 5-10 to break the current to a motor 1. Besides, when the overcurrent detector 12 detects an overcurrent, a feedback controller 15 provides the gate driver 14 with a short-circuit braking instruction to apply short-circuit braking after breaking the power supply, and to restart PWM control from a state in which the short-circuit braking is being applied and the duty ratio command value is reset at 0.

The invention discloses high-strength coral aggregate concrete which is prepared from the following ingredients in parts by weight: 260-350 parts of low-heat marine Portland cement, 35-50 parts of flyash floating beads, 35-50 parts of mineral powder, 8-16 parts of silica fume, 8-16 parts of metakaolin, 2-6 parts of nano silicon dioxide, 2-6 parts of polyaluminum chloride, 550-679 parts of coral reef sand, 890-1000 parts of coral reef and 180-256 parts of seawater. The high-strength coral aggregate concrete has the advantages that the pelagic engineering construction cost is lowered, and environment-friendly and energy-saving requirements of civil engineering are also met.

The invention relates to a method for preparing biodegradable polyurethane foam by liquefied modification of bark powder and lignin. The method comprises the following steps: 1. adding phenol into alkaline solution, heating, then adding larch bark powder and the lignin, stirring evenly, carrying out reaction adequately, and cooling for use; 2. heating liquefied product, adding formaldehyde and catalyst to obtain methylolated lignin, phenolic hydroxyl lignin and methylolated tannin; 3. mixing above modified product, polyether, a foam homogenizing agent and catalyst according to a certain proportion, and mixing with isocyanate for foaming. The rigid foam material foamed by mixing, provided by the invention, has an apparent density of 0.03-0.05g/cm<3>, compressive strength greater than 0.15MP, thermal conductivity of 0.023W/(M.K), and water absorption of 3%. The method provided by the invention can improve the utilization of lignin, save resources, does not cause environmental pollution, and is high in production efficiency. The foam is good in lame retardant property.

The invention discloses a preparation method of a material with tobacco fragrance. The preparation method is characterized by sequentially comprising the following steps: 1, drying and pulverizing tobacco raw materials, then conducting extraction through an ethanol solution, conducting solid-liquid separation, then conducting decompression condensation on filter liquor, and obtaining tobacco extract A; adding a bio-enzyme preparation to obtained filter residues for conducting enzymatic hydrolysis, conducting solid-liquid separation, then conducting decompression condensation on filter liquor, and obtaining tobacco extract B; mixing the exact B, amino compounds and polyalcohol, conducting heating, making the mixture react, and obtaining a tobacco reagent C; 4, mixing the tobacco exact A and the tobacco reagent C in a certain proportion, and obtaining the material with tobacco fragrance. The preparation method of the material with tobacco fragrance is applicable to different varieties of tobacco products, and real, abundant and rich original tobacco fragrance can be supplied to the tobacco products.

The invention relates to a silicone rubber/polypropylene thermoplastic vulcanizate and a preparation method thereof. The thermoplastic vulcanizate comprises silicone rubber, polypropylene, a filler, an antioxidant, a vulcanizing agent, a polymerization inhibitor and a compatibilizer, wherein a catalytic reaction product of epoxy silicone oil or ethylene methyl acrylate-glycidyl methacrylate randomterpolymer and polypropylene and grafted maleic anhydride under the action of a catalyst is used as a compatibilizer, the filler is added to the silicone rubber to increase the viscosity of siliconerubber, and the compatibility of the silicone rubber with the polypropylene and the viscosity ratio of the two are improved; through the dynamic vulcanization technology, the prepared thermoplastic vulcanizate has a fine structure, excellent mechanical properties and elasticity, has good high temperature resistance and excellent chemical stability, and can be widely used in automobiles, medical instruments, wearable devices and the like.

The invention discloses a lignin rock wool phenolic resin binder and its preparation method and use method. The lignin rock wool phenolic resin binder comprises components A, B and C. The component A comprises, by weight, 100 parts of lignin rock wool phenolic resin, 40-60 parts of ammonia water, 180-220 parts of fine-filtered water and 0.4-0.8 parts of a coupling agent. The component B comprises, by weight, 100 parts of anti-dust oil and 180-220 parts of fine-filtered water. The component C comprises, by weight, 100 parts of a water repellent and 180-220 parts of fine-filtered water. The lignin rock wool phenolic resin binder has long-term storage stability, excellent waterproof performances and bonding performances, realizes high strength and toughness of a rock wool product and can be widely used for production of rock wool thermal-insulation fireproof materials.

A method for preparing non-fired and non-steamed bricks by using sintering a dry desulphurization byproduct belongs to the field of resources comprehensive utilization. The method comprises the stepsof mixing the desulphurization byproduct with water to prepare a mixed material with a concentration ranging from 10% to 80%, stirring uniformly, and airing naturally a filter cake after filtering themixed material so that the water content becomes 10% to 30%; re-stacking the stewed steel slag for 170 days to 200 days; sieving the steel slag in a sieve with the size of 10mm, and taking out the minus sieve for sieving in another sieve with the size of 3mm, and then taking out the plus sieve; dosing based on the proportion of raw materials; and after stirring uniformly by a stirrer, feeding thestirred product into a brick machine to be pressed by the machine, and naturally curing in air for 28 days to obtain a finished product. The method has the advantages that the process route of non-firing and non-steaming is adopted to prepare energy-saving bricks, therefore, the products are energy saving and environment friendly with lower cost and the energy-saving bricks are no longer crackedin use.

The invention discloses a method for preparing a smectite inorganic gel by mechanochemical modification, which comprises the following steps: adding water into the smectite raw material to prepare a slurry with the concentration of 5-20 wt%, stirring and dispersing uniformly, and pretreating with an ion exchange resin to obtain a pretreated smectite slurry; adding a modifier which is 0.6-1.2 times of smectite CEC, and stirring and dispersing uniformly; feeding the slurry into a wet-process superfine treatment device to perform superfine treatment, thereby obtaining the smectite slurry of which the particle size distribution is D50<=1.0 mu m and D90<=5.0 mu m; and adding an electrolyte which accounts for 0-5 wt% of the smectite into the superfine slurry, and stirring and dispersing uniformly to obtain the target product. The method obviously enhances the water dispersity, suspension stability and thickening property of the smectite, and especially has obvious improvement effects on high-level charged smectite.

The invention relates to a bisphenol A liquid epoxy resin refining process. The bisphenol A liquid epoxy resin refining process is characterized by including steps: feeding coarse epoxy resin, NaOH solution and solvent into a reaction kettle, stirring, heating to 60-100 DEG C, reacting for 1-4h, adding NaOH solution and promoter, reacting at 60-100 DEG C for 1-4h, washing with water for three times at 60-100 DEG C after reaction is completed, and subjecting filtrate to reduction vaporization for removing the solvent to obtain high-purity, low-chlorine and low-viscosity bisphenol A liquid epoxy resin. The bisphenol A liquid epoxy resin refining process has the advantages that reaction degree of hydrolysable chlorine on NaOH and coarse resin can be increased by adding the promoter under the low refining alkali condition, adding resolving water during water washing for neutralizing excess alkali can improve the skimming condition and reduce consumption of pure water, little 'three wastes' (waste water, waste gas and waste residues) are generated, production cost is low, products are high in transparency and purity and low in viscosity, and the bisphenol A liquid epoxy resin refining process has high application value.

The invention discloses a method for preparing a silicon carbide refractory material by taking polycarbosilane as a binding agent. According to the method, a raw material is made up of a silicon carbide precursor, namely, polycarbosilane, as a binding agent, and silicon carbide in grain composition, and the silicon carbide formed through in-situ reaction in the sintering process of polycarbosilane is used as binding phase to ultimately prepare a pure silicon carbide product. The added polycarbosilane plays the role of the binding agent in the pressing process, so that a blank has certain strength, the operability is improved, and meanwhile the polycarbosilane can be converted into silicon carbide in situ in the sintering process, so that the function of binding silicon carbide grains is achieved, and the property of a silicon carbide refractory material product is improved.

The invention discloses a composite material having a visible-light catalytic activity and a preparation method thereof. The composite material having a visible-light catalytic activity is prepared by compounding organic pillared clay and a modified ZnTiO3/TiO2 material. The organic pillared clay is prepared by an intercalation reaction between an organic pillaring agent and raw clay. The ZnTiO3/TiO2 material is prepared by a sol-gel method. The ZnTiO3/TiO2 material and the organic pillared clay are compounded into the ZnTiO3/TiO2-organic pillared clay composite material having a visible-light catalytic activity. Compared with single TiO2, the ZnTiO3/TiO2-organic pillared clay composite material has good responsibility in a visible wavelength range. Through utilization of the organic pillared clay as a carrier, adsorption performances of the ZnTiO3/TiO2-organic pillared clay composite material are improved. The preparation method has the advantages of simple processes, no special equipment, low investment, low cost and popularization convenience.

The invention discloses a photoelectrochemical adaptor sensor as well as a preparation method and application thereof. The photoelectrochemical adaptor sensor comprises a conductive glass electrode, wherein the reacting end surface of the conductive glass electrode is modified with a composite membrane consisting of phosphorus hybridization graphite phase carbon nitride nanosheets loading gold nanoparticles; and a specific adaptor probe is self-assembled on the surface of the membrane. The preparation method of the photoelectrochemical adaptor sensor comprises the following step: modifying thephosphorus hybridization graphite phase carbon nitride nanosheets loading the gold nanoparticles and the specific adaptor probe on the reacting end surface of the conductive glass electrode. The sensor disclosed by the invention has the advantages of high stability, long service life, high anti-jamming capability, wide detection range, low detection limit and the like. The preparation method of the photoelectrochemical adaptor sensor has the advantages of simple technology, convenient operation, safety, low cost, no pollution, high production efficiency and the like. The sensor disclosed by the invention can be widely applied to detecting pollutants (such as antibiotics) in mediums such as a water body and a living body and has the advantages of high utilization rate, wide application range, high application value and the like.

The invention discloses an integrated control system based on digital ring bus, including master equipment and slave equipment; the main equipment includes the PC (1) with digital control software and the bus controller unit (2); the slave equipment includes digital bus servo drive (3) and the PLC, and main equipment connecting with 1-24 slave equipments in serial which back to the main equipment thereby constituting a closed loop, and between the main equipment and the slave equipment transmitting data through the link connecting with physical layer and transmission media; among them, the bus controller unit uses integrated method to fix on the motherboard based on X86 architecture, and communicates with the X86CPU on the motherboard. The invention relies on industrial control motherboard to integrate the bus controller, in order to ensure the system stability and reliability.

The present invention relates to a method for preparing high-purity vinylene carbonate. The method comprises the steps of (a) carrying out a chlorination reaction between ethylene carbonate and dry chlorine under the irradiation of ultraviolet light to produce chloroethylene carbonate; (b) dispersing chloroethylene carbonate into methylsilicone oil, then, adding an organic amine, and carrying out an elimination reaction to obtain vinylene carbonate, wherein the mole ratio of chloroethylene carbonate to the organic amine is 1: (1.1-1.5); and (c) refining the products obtained in the step (b) under reduced pressure. Through carrying out the elimination reaction between chloroethylene carbonate and the organic amine in the methylsilicone oil, and controlling the ratio of chloroethylene carbonate to the organic amine, the extent of the reaction can be improved, and the separation of each product can be facilitated, so as to increase the product purity.

The invention provides a fluidized bed reactor. A reaction area of the reactor is provided with foam metal plates with catalytic activity, the foam metal plates are longitudinally and/or transversely arranged along the reaction area, the space among the foam metal plates and/or the space between the foam metal plates with the inner wall of the reaction area are/is used to hold a fluidizable particle, and the fluidizable particle can pass through pores on the transversely-arranged foam metal plates. The invention also provides a fluidized bed reaction apparatus which comprises the fluidized bed reactor and a regenerator. The invention also provides a methane water-vapour reforming method using the fluidized bed reaction apparatus, and the foam metal plates have catalytic activity on the methane water-vapour reforming reaction, and at least a part of the fluidizable particle has adsorption effect on carbon dioxide. In the method, the catalyst does not need frequently regenerating along with the adsorbent, when the adsorbent is guaranteed to be always capable of satisfying usage requirements, energy consumption during regeneration is reduced, and senseless reduction of the catalyst activity is avoided.

The invention relates to a low monomer residue humic acid sodium type super water-absorbed resin and a preparation method, belonging to the technical field of organic high molecular compound. The invention is used for solving the problem that the humic acid sodium type super water-absorbed resin has high monomer residue and is characterized in that the resin comprises matters of the following weight unit: 14-18 of humic acid sodium, 16-17.5 of acrylic acid, 3.8-6.5 of neutralizing agent, 0.23-0.55 of evocating agent, and 0.085-0.15 of cross linker. The product has high humic acid sodium content. The method replaces a conventional heating method with a microwave polymerization method, greatly increases the polymerization reaction yield and reaction degree, and leads the super water-absorbed resin to reach knockdown low monomer residue. Compared with the conventional product produced by the prior art, the multiplying power of the product absorbing de-ionized water is increased by about 40%, the multiplying power of the product absorbing 0.9% of NaCI water solution is increased by about 80%, and the monomer residual quantity is 5-6% of the conventional product, thus greatly increasing use safety.