832results about How to "Guaranteed decentralization" patented technology

The invention discloses a wear-resistant thermoplastic elastomer, which is prepared from the following raw materials in percentage by weight: 10 to 80 percent of matrix resin, 10 to 60 percent of master batch, 0 to 42 percent of extending oil, 0 to 20 percent of thermoplastic resin, 0 to 30 percent of mineral filler, 0 to 1.5 percent of coupling agent, 0.1 to 2 percent of processing aid and 0.1 to 2 percent of stabilizing agent. The invention also discloses a method for preparing the wear-resistant thermoplastic elastomer. SBS, SEBS and the like are adopted as the matrix resin, and the problem of poor wear resistance of SBC thermoplastic elastomers is solved through improvement of a mixing formular and a process; the prepared thermoplastic elastomer has good wear resistance; compared with the TPU products with good wear resistance, the thermoplastic elastomer has low cost; in the whole process of modifying and producing the material, chemical solvents are not used, the influence on the environment is small, the halogen is free and the environment is protected; and the leftover material of the thermoplastic elastomer can be repeatedly used.

The invention relates to a controlled/slow release polycarboxylate water reducing agent for inhabiting the aggregate mud content influence, which is characterized in that the controlled/slow release polycarboxylate water reducing agent comprises the following ingredients by weight parts: 75 to 95 parts of polycarboxylate water reducing agents, 2 to 5 parts of retarders and 5 to 25 parts of slow release agents. Because natural zeolite powder has the characteristics of microporous structure, large specific surface area and strong surface absorption capability, the natural zeolite powder can be used as the slow release agents. The invention utilizes the natural zeolite powder as the slow release agents, and the surface of the natural zeolite powder can absorb a large number of polycarboxylate water reducing agents and a small number of retarders after the natural zeolite powder is mixed with the polycarboxylate water reducing agents and the retarder. Clay can preferentially absorb the natural zeolite powder with strong surface absorption capability when the natural zeolite powder is doped into concrete to be stirred with gelled materials, aggregates and water, and the excessive absorption of the polycarboxylate water reducing agent by the clay is avoided, so the absorption of the polycarboxylate water reducing agents on cement grains and the dispersing effect taking are ensured.

The invention discloses an electric vehicle travel planning method based on multi-target optimization, generally comprising the following steps: (1) a travel planning problem model is established; (2) drivers provide travel information; and (3) an optimal scheme is solved based on a timed multi-target ant colony optimization algorithm. The problem model comprises a road network model, a vehicle model, and travel target and travel constraint definition. Travel information includes: not providing any information, providing constraint information, and providing optimization goal and constraint information. The ant colony optimization algorithm includes the steps of pheromone initialization, route transfer probability calculation, travel scheme search, air conditioner use determining, travel scheme ranking, pheromone updating, and loop optimization. A dynamic stochastic road network model is used to describe the traffic environment and plan the travel of electric vehicles, and target characteristics corresponding to different travel schemes can be reflected. The ant colony optimization algorithm ensures that a multi-target and multi-constraint optimized electric vehicle travel scheme is generated as the number of iterations increases.

The invention discloses a heat-preservation hard composite carbon fiber felt and a preparation method thereof. The preparation method comprises the following steps: forming a carbon fiber vacuum filtration layer, compositing a viscose-based carbon fiber felt or polyacrylonitrile-based carbon fiber felt, soaking a binding agent, needling, coating an upper surface processing layer, forming and postprocessing. The heat-preservation hard composite carbon fiber felt and the preparation method thereof provided by the invention have the advantages that the cost performance optimization design is carried out on a product according to a specific operating environment, the designability of the density of the whole felt is high, the density of an organic padding is relatively low, a high density fiber stacking structure which is corresponding to a high temperature surface is effectively formed, a heat insulation effect is excellent, a low density fiber stacking structure which is corresponding to a low temperature surface is effectively formed, and the cost is economic.

The invention discloses a fine flaky-cryptocrystalline mixed graphite separation technique which comprises the following steps: primary rough grinding and rough separation, quintic regrinding and sextic concentrating, and middling centralized processing. According to the technique, in the rough separation step, the grinding fineness is -0.074mm, and the content is 90-95%; in the concentrating step, the regrinding fineness is -0.045mm, and the content is 90-95%; and thus, the graphite monomer is sufficiently dissociated, thereby sufficiently ensuring the fixed carbon content and recovery rate of the concentrated concentrate. The technique adopts gradually decreased low concentrating concentrations in multiple concentrating process to ensure the dispersity of ore slurry, thereby solving thesevere problem of entrapped impurities in floatation foam; and thus, in the final concentrate, the fixed carbon content is 91.35%, and the recovery rate is 91.30%, thereby solving the problems of lowtechnical indexes, low grade, low recovery rate and high cost in the fine flaky-cryptocrystalline mixed graphite concentrate separation, so that the fine flaky-cryptocrystalline mixed graphite ores are utilized in an efficient, economical and reasonable way.

The invention discloses a water-based non-graphite type lubricant, which is characterized by comprising the following ingredients in percentage by weight: 26%-35% of inorganic substance with layered lattice structures, 10%-15% of high-temperature-resistant lubricant, 12%-24% of suspending agent, 30%-47% of high-temperature adhesive and 1%-3% of adjuvant. The water-based non-graphite type lubricant is an environment-friendly lubricant for hot die forging, can replace a graphite type lubricant, and is especially suitable for the hot die forging of metal, in particular, for the hot die forging of large-sized aluminum pieces. The invention further discloses a preparation method of the water-based non-graphite type lubricant. The preparation method has the advantages of simple preparation process and excellent film-forming performance.

The invention discloses a partition fast consensus method based on a reputation mechanism in a blockchain. The basic idea of the partition fast consensus method based on the reputation mechanism in the blockchain is divided into two stages: the first stage is to divide a large number of nodes in a global public chain into a plurality of small partitions, introduce the reputation mechanism in the P2P technology inside the partition, and realize local consensus using a Raft algorithm, which can achieve fault tolerance of malicious nodes; and the second stage is to further construct a global overlay network on top of the partitions to achieve the consensus of the entire public chain; in order to facilitate connections among nodes, an index committee is also constructed, which is mainly used to store the contact information and reputation values of all nodes in the whole chain; and all nodes can contact the index committee to find other nodes to establish a connection.

The invention discloses a light armored armor and a preparation method thereof. The armored armor is in a sandwich structure; a core plate is made of novel aluminum matrix composite of composite enhancing silicon carbide and graphene; a face plate and a back plate are made of 5083 and 7A21 high-intensity aluminum alloy; the core plate, the face plate and the back plate are glued through metallic glue; the composite of the core plate is graphene or silicon carbide enhanced aluminum matrix composite and prepared through the pressure infiltration technology; an infiltration framework is silicon carbide and graphene cold pressing block which are uniformly mixed. According to the light armored armor and the preparation method thereof, the core plate is obtained due to infiltration of aluminum alloy through the silicon carbide and graphene composite framework, the silicon carbide enhancement is used, the enhancement and toughening functions to the aluminum alloy from the graphene are fully played, the ballistic performance of the core plate is improved, and the light armored armor having a good application prospect is finally obtained.

The invention discloses double-foaming cellular concrete and a site production construction method thereof. The volume weight of the double-foaming cellular concrete ranges from 100 KG/M<3> to 400 KG/M<3>; the heat conduction coefficient is as little as 0.020 W/M.DEG C, and the intensity is up to 5 MPa. The double-foaming cellular concrete can be widely applied to the production of light-weight heat preservation materials such as roof heat preservation materials and external wall heat preservation materials and hanging pieces such as light-weight building hanging beams, and has the purposes of the filling of light-weight hollow bricks and hollow building covers; more importantly, the double-foaming cellular concrete can be applied to the construction of underwater facilities. The site production construction method for the double-foaming cellular concrete is simple in technology and simple and convenient to operate; by special equipment, full-automatic integrated productions, such as automatic foaming, metering and proportioning, are effectively realized; upon automatic control, the production construction of the double-foaming cellular concrete is finished highly efficiently at low cost.

The invention discloses an amylum category complete biodegradable material and a preparation method thereof. The amylum category complete biodegradable material comprises, by weight, the long-chain branch aliphatic polyester or long-chain branch aliphatic series- aromatic copolyesters 50-70%, the starch 20-30%, the chain extender 0.1-3% and the balance chain extender 9-17%. The preparation method comprises the steps of enabling all components to be mixed in a high speed mixer, feeding in a twin-screw extruder after accurate measurement by means of a measurement scale, and extruding and prilling by adjusting a built-up sequence of a screw and designing different exhaust ports. The amylum category complete biodegradable material and the preparation method of the amylum category complete biodegradable material solve the problems of dispersing, plasticizing and exhausting of starch filler in the twin-screw extruder, and obtained amylum complete biodegradation material not only has complete biodegradation performance, but also has excellent mechanical property and good extrusion molding working quality.

The invention discloses a preparation method for doped graphene foams. The preparation method comprises the following steps: adopting the hydrothermal method to enable nano particles to dope with and generate on oxidized graphene sheets to obtain oxidized graphene aerogel; reducing the oxidized graphene aerogel doped with the nano particles in a controllable manner at the low-temperature gaseous phase condition to obtain the doped graphene foams. According to the preparation method, a reductant is not used in the growing process of the nano particles, and liquid is not introduced into the reaction system, so that excessive overlap of the graphene layers is avoided, porosity of the graphene foams is maintained, polyporous shrinkage caused by surface stress is prevented, and the uniformly doped graphene foam material with the controllable appearance is obtained. The preparation method is convenient to operate, uniform in doping, controllable in product size, economical and fast, is adopted as the novel technology for the large-scale preparation of the doped graphene foam material, and is expected to provide novel materials for graphene adsorbents, graphene capacitors, graphene catalysts and the like.

The invention discloses a hybrid consensus method based on fragmentation technology. According to the method, fragmentation technology applied to a block chain system is designed. All nodes and transaction addresses are divided into a plurality of fragments. A common node in each fragment records a slave chain; wherein the representative nodes record the main chain and divide the consensus process into two layers, the first layer is consensus carried out in fragments, the consensus result is recorded in the slave chain and submitted to the main chain through the representative nodes of the fragments, and the second layer is 3% > 7 consensus carried out across the fragments and mainly processes, verifies and records transactions across the fragments. The consensus method is based on the fragmentation technology, and can improve the expandability of the blockchain system while ensuring the decentralization and security of the blockchain.

The zinc oxide whisker compound germicide composition contains: four-needle shaped zinc oxide whisker 50-80 weight portions, nano zinc oxide 5-25 weight portions, nano titanium oxide 5-25 weight portions, and sodium silicate carrier 10-40 weight portions. It has the advantages of high germicidal effect, capacity of being reused, stable effect, no color change, no need of photocatalyst, convenient use, etc.

The invention discloses a preparation method of two-dimension nitrogen- and phosphorus-doped graphene. The preparation method particularly includes following steps: adding hydrotalcite to a proper amount of a sodium butyrate solution, stirring the mixture, aging the mixture, adding 4-dimethyl aminopyridine and n-butyl phosphate, stirring the mixture in a constant-temperature water bath at 60-70 DEG C for 6-8 h, separating a precipitation from liquid, washing the precipitation with deionized water for 2-3 times, drying and grinding the precipitation, sieving the precipitation through a sieve being 20-40 in meshes to obtain modified hydrotalcite powder, heating the modified hydrotalcite powder in a vacuum tubular furnace to 400-600 DEG C under a vacuum condition for calcining the powder for 2-4 h, adding the calcined powder to a hydrochloric acid solution, separating the precipitation and finally heating the precipitation to 2000-2500 DEG C under the vacuum condition to perform heat treatment for 3-6 h, and cooling a product to obtain the two-dimension nitrogen- and phosphorus-doped graphene. The preparation method is simple in raw materials and is mild in conditions.

The invention discloses a device for surface modification of micro-nano particles. The device comprises a reaction cavity, a plurality of precursor supply devices, a carrier gas conveying system and a powder particle loading device, wherein a cavity formed inside the reaction cavity is used as a reaction space of precursors and the micro-nano particles; the plurality of precursor supply devices are respectively communicated with the reaction cavity by virtue of pipelines to provide different precursors; the precursors are conveyed to the reaction cavity by virtue of carrier gas output by the carrier gas conveying system; the powder particle loading device is used for loading the micro-nano particles to be modified; the precursors are alternately conveyed to the reaction cavity by virtue of the plurality of precursor supply devices respectively, and enter the rotary powder particle loading device so as to be in contact with the surfaces of the micro-nano particles to perform an atomic layer deposition reaction, thus forming a coating thin film on the surfaces of the micro-nano particles and realizing surface modification. The invention also discloses a method for performing surface modification on the micro-nano particles by using the device. The device and method disclosed by the invention can be used for obtaining a coating layer with high particle surface uniformity and improving the overall coating rate of the powder particles and the utilization rate of the precursors.

The invention relates to a Pd @MIL-101 composite and a preparation method and application thereof. According to the adopted technical scheme, palladium chloride is added to methyl alcohol while sodium chloride is added, ultrasonic dispersion is conducted, stirring is conducted for 10-20 hours, and sodium tetrachloropalladate is obtained; a sodium tetrachloropalladate solution is dropwise added into MIL-101 crystals slowly, pd<2+>@MIL-101 is obtained; a methanol solution of asaturated sodium borohydride is added to the pd<2+>@MIL-101, reduction is conducted under the condition of ice-water bath, and the Pd @MIL-101 composite is obtained. The synthesized Pd @MIL-101 composite has special selectivity catalytic activity for phenylboronic acid and 1,4-dibromo-benzene in a suzuki reaction, and the yield of an intermediate product 4-bromobiphenyl is effectively raised.

The invention relates to a high-weather-resistance acrylate resin composition and a preparation method thereof. The raw materials of the high-weather-resistance acrylate resin composition comprise the following components in part by weight: 10 to 30 parts of acrylate rubber powder 1, 10 to 30 parts of acrylate rubber powder 2, 30 to 60 parts of SAN resin 1, 5 to 20 parts of heat-resistant modifier, 5 to 15 parts of weather-resistant master batch, 0.3 to 3 parts of lubricant and 0.05 to 0.5 part of antioxidant. The preparation method comprises the following steps of: stirring the raw materials except the weather-resistant master batch to obtain a mixture; adding the mixture from a main feed inlet of a double-screw extruder, and adding the weather-resistant master batch from a side feed inlet; and extruding and pelleting the raw materials by the double-screw extruder to obtain a sample. The high-weather-resistance acrylate resin composition prepared by the method has higher heat resistance, low-temperature impact resistance, weather resistance, excellent size stability and processing property, and is particularly suitable for automobile exterior trim parts, such as radiator grilles, rear-view mirrors, license plates, central pillar plates, outdoor triangular blocks and the like, with high requirements on weather resistance, heat resistance and low-temperature impact resistance.

The invention discloses a trusted identity authentication method based on a block chain. A blockchain certificate server transmits trust through a cross-domain model based on a block chain and realizes an authentication process of a client and an information service entity in different trust domains, and the information service entity obtains a complete signature through an arbitration entity communication server and realizes authentication of the complete signature through an identity authentication server. Only partial keys are stored in the information service entity; the rest secret keys are stored in the arbitration entity communication server; the information service entity obtains a complete signature of the message through the arbitration entity communication server; according to the invention, the capability of revoking the decryption or signature of the arbitration entity communication server can be realized by stopping sending signaling through the arbitration entity communication serve , the problem that the entity identity in the IBC system is difficult to cancel is solved, the problems of many certificate checking times, low cross-domain authentication and the like are also solved, and the decentralization and higher security of the block chain system are ensured.

The invention relates to Chinese medicinal composition granules and a preparation method thereof. The Chinese medicinal composition granules comprise the following ruptured powder in part by weight: 3 to 18 parts of American ginseng ruptured powder, 1 to 24 parts of pseudo-ginseng ruptured powder, 6 to 36 parts of dendrobium ruptured powder, and 9 to 45 parts of root of red-rooted salvia ruptured powder, wherein the granularity D90 of the ruptured powder is between 5 and 75 mu m. The invention also provides a method for preparing the Chinese medicinal composition granules. The method comprises the following steps of: uniformly mixing the American ginseng ruptured powder, pseudo-ginseng ruptured powder, dendrobium ruptured powder, and root of red-rooted salvia ruptured powder of which the D90 is between 5 and 75 mu m; preparing a soft material by adopting aqueous ethanol at the concentration of over 20 vol percent; and after granulating by using a granulator with 10 to 30 meshes, drying and finishing the granules to obtain the Chinese medicinal composition granules. The Chinese medicinal composition granules are applied to preventing and regulating human cardiac-cerebral vascular system diseases and sub-health state such as weak immunity and fatigability, have the obvious advantages of high medical effect, high quality uniformity, convenient carrying and administration, safety, reliability, and the like, and can meet the requirement on modern fast-paced lifestyle.

The invention relates to an epoxy resin matrix nano-zinc oxide composite material and a preparation method of the epoxy resin matrix nano-zinc oxide composite material. The epoxy resin matrix nano-zinc oxide composite material comprises matrix resin, curing agent, accelerating agent and additive, wherein the matrix resin is epoxy resin, the curing agent is methy hexahydrophthalic anhydride, the accelerating agent is N, N- methylbenzylamine, and the additive is nano-zinc oxide; the epoxy resin matrix nano-zinc oxide composite material comprises the components in part by weight: 100 parts of the epoxy resin, 70-120 parts of the methy hexahydrophthalic anhydride, 1-4 parts of the N, N- methylbenzylamine, and 0.5-10 parts of the nano-zinc oxide; the preparation method of the epoxy resin matrix nano-zinc oxide composite material comprises the steps of: mixing the nano-zinc oxide, acetone, the epoxy resin, carrying out high-speed shearing and ultrasonic dispersion on the obtained mixture, removing the acetone by water bath, carrying out vacuum degassing after the curing agent and the accelerating agent are added, and curing by an oven. The epoxy resin matrix nano-zinc oxide composite material has the advantages of being excellent in dielectric property and especially strong in power frequency breaking down field strength. The preparation method of the epoxy resin matrix nano-zinc oxide composite material has the characteristic of low cost.