11results about How to "Act as a bridge" patented technology

The application discloses a composite flocculant based on aluminum chloride and a preparation method thereof, and belongs to the technical field of flocculant preparation, and is used for solving the technical problem that the stability and flocculation performance of the flocculant need to be further improved in the prior art; the branched polymer containing polycarboxyl groups is prepared by the reaction of tris(2-aminoethyl)amine and pyromellitic dianhydride, and the taurine groups are introduced to obtain the sulfobranched polycarboxyl polymer; the titanium phosphorus silicon aminopropyl composite is synthesized by using the sol-gel method, and the inorganic-organic network combination is realized; the polyimidazolium-hydroxy ether is obtained by the reaction of imidazole, epichlorohydrin and bisphenol A diglycidyl ether; the composite flocculant is formed by the reaction of the three under the acidic condition, the composite flocculant combines the polycarboxyl groups, the sulfonic acid groups, the imidazolium groups and the inorganic-organic skeleton, has high charge density, good adsorption and bridging performance, can rapidly form stable flocs, and can effectively remove the suspended particles and organic pollutants in water.

The application discloses a shrinkage-compensating concrete containing acid-free weak base expandable graphite and a preparation method thereof. The concrete comprises cement 200-500 parts, mineral admixtures 50-200 parts, fine aggregate 600-800 parts, coarse aggregate 1000-1300 parts, water 120-200 parts, additive 5-15 parts and acid-free weak base low-temperature expandable graphite 15-75 parts. The expansion trigger temperature of the graphite is 90-100 DEG C, and the pH value is 6.0-8.0. The method comprises the following steps: firstly, uniformly mixing and stirring cement, mineral admixtures, fine aggregate, coarse aggregate and acid-free weak base low-temperature expandable graphite to obtain dry mixture B; secondly, mixing water and additive and adding the mixture into the dry mixture B to uniformly stir to obtain a concrete mixture; and thirdly, forming the concrete mixture, carrying out steam curing after final setting, naturally cooling to room temperature and obtaining the shrinkage-compensating concrete. Therefore, the concrete self-shrinkage can be precisely and efficiently compensated in the steam curing process of the concrete.

The invention discloses anti-cracking and anti-corrosion concrete and a preparation method thereof, and relates to the technical field of concrete preparation, the concrete comprises the following raw materials by weight: 350-400 parts of cement, 80-90 parts of fly ash, 170-190 parts of water, 5-8 parts of a water reducer, 1100-1200 parts of gravel, 700-800 parts of medium sand, 3-5 parts of a modified filler, 8-10 parts of a modified additive, and 3-5 parts of triethylene tetramine. In the raw material mixing process, epoxy groups in the modified additive and epoxy groups on the surface of the modified filler can react with amino groups on triethylene tetramine to form a cross-linked network, and the modified filler contains iron-based layered double hydroxides which can quickly absorb chloride ions, so that the corrosion resistance effect of the concrete is improved, and the service life of the concrete is prolonged. The modified additive forms a polysiloxane network, so that a hydrophobic network is formed in the concrete, and the anti-permeability effect of the concrete is effectively improved.

The utility model discloses a new energy battery module fixed with foam tape, including the foam base material layer, pressure sensitive adhesive layer and the release layer that connect gradually, another surface of foam base material layer is equipped with the adhesive layer, another surface of adhesive layer sprays a layer of nanometer ceramic particle. The application can improve the water resistance, high temperature resistance, wear resistance and chemical stability of foam tape significantly, and enhance the bonding performance, adapt to more complex environment, can be applied to some special scene of extremely high performance requirement, such as electric automobile battery module fixing under high temperature environment, energy storage equipment battery module fixing in high humidity or chemical corrosion risk environment etc, expand the application range of foam tape.

This invention belongs to the field of unmanned surface vessel (USV) technology and discloses a large-scale dynamic obstacle avoidance and path tracking method for USVs based on the fusion of deep reinforcement learning and line-of-sight navigation. This invention boasts strong robustness and generalization ability: it employs a FEDT (Feature-Based Assisted Learning) strategy to train the DRL agent in a local dynamic environment, avoiding the complexity of training in a large-scale environment, while enabling the trained policy to effectively transfer and cope with unknown complex obstacles in a large-scale environment. It balances global tracking and local obstacle avoidance: by creatively combining LOS (Low-Installation-Side) navigation and DRL control, and utilizing an "obstacle-aware domain" for mode switching, it solves the problem that a single method cannot simultaneously achieve both long-distance tracking efficiency and short-distance obstacle avoidance flexibility. Smooth policy fusion: in obstacle avoidance mode, the LOS point is used as a temporary target for DRL, acting as a "bridge" to ensure that the USV can naturally and quickly converge back to the preset path after obstacle avoidance.

This invention relates to the field of anode materials, specifically to an antimony-based anode material, its preparation method, and a lithium-ion battery. The method involves preparing Schiff base-functionalized carbon quantum dots by adding a phosphorus source, an antimony source, and the Schiff base-functionalized carbon quantum dots to a reaction solvent, followed by a solvothermal reaction. This antimony-based anode material achieves a synergistic improvement in high specific capacity, long cycle life, excellent rate performance, and high structural stability, making it a highly promising anode material for lithium batteries, particularly suitable for high-energy-density, long-life lithium-ion batteries.

This invention provides a method for preparing a transparent, high-strength all-polyimide nanocomposite film, comprising: Step 1: dissolving soluble polyimide in a polar organic solvent to obtain a polyimide solution; Step 2: reacting an aromatic diamine and an aromatic dianhydride to obtain a polyamic acid solution; Step 3: using the polyimide solution as the outer fluid and the polyamic acid solution as the inner fluid, performing coaxial electrospinning to obtain a core-shell nanofiber membrane with a polyimide outer shell and a polyamic acid core, followed by heating to obtain a core-shell polyimide nanofiber membrane; Step 4: immersing the core-shell polyimide nanofiber membrane in a mixed organic solvent; Step 5: hot-pressing the immersed core-shell polyimide membrane and washing it to obtain a polyimide nanofiber composite membrane. The polyimide composite membrane prepared by this invention has a light transmittance higher than 85%, a nanofilling content of over 50%, and tensile strength and Young's modulus both increased by over 100%.

The invention provides a graphene quantum dot and a preparation method and application thereof, graphene film slurry and a preparation method thereof, a graphene film and an LED, and the preparation method comprises the following steps: adding sodium persulfate and graphite into concentrated sulfuric acid to obtain expanded graphite; adding potassium permanganate and concentrated sulfuric acid into the expanded graphite to obtain graphene oxide; and adding ammonia water and hydrogen peroxide into the graphene oxide to obtain the graphene quantum dots.

The present application relates to a kind of chlorine dioxide solid sustained-release agent and its preparation method, the preparation method includes: S1, zeolite, activated carbon fiber and water are mixed, stirring and then filtering dry, obtain activated carbon fiber modified zeolite;S2, the above activated carbon fiber modified zeolite is contacted with fluorine gas, and activated carbon fiber-fluorine gas modified zeolite is obtained;S3, the above activated carbon fiber-fluorine gas modified zeolite is soaked in chlorite solution, filter dry, and the chlorine dioxide solid sustained-release agent is obtained, the chlorine dioxide solid sustained-release agent obtained by the method has the advantages of large chlorite loading, chlorine dioxide release rate is fast, sustained-release period is long etc..

The utility model discloses an efficient sealing strip for splicing of ALC partition boards, and relates to the technical field of sealing strips, the efficient sealing strip comprises a sealing strip main body and a seam inserting strip which is arranged in the length direction of the sealing strip main body and used for being inserted into a spliced wall seam, and the sealing strip main body is provided with a plurality of metal wires for enhancing the strength of the sealing strip main body; the metal wires are distributed in the sealing strip body in a net shape. The inserting seam strip is inserted into the splicing wall seam of the ALC partition board, so that the accuracy of the mounting position is improved, and the sealing effect is further improved; metal wires distributed in a net shape are arranged in the sealing strip body and provide high-strength support for the sealing strip body. When the silica gel sealing strip is subjected to external force, the metal wire net-shaped structure can disperse stress, the situation that the silica gel sealing strip body is torn due to the fact that the stress is concentrated at a certain point is avoided, the overall strength and deformation resistance are enhanced, and the possibility of tearing and damage is reduced.

The application provides a thermosetting resin composition, a resin adhesive film and application thereof. The thermosetting resin composition comprises the following components in parts by mass: 5-95 parts of a benzocyclobutene resin, 5-95 parts of a component containing a C=C unsaturated bond, 5-300 parts of a modified filler, and 0.1-10 parts of an initiator. The modified filler is an inorganic filler treated on the surface by using an unsaturated group-containing coupling agent, wherein the unsaturated group is selected from any one or a combination of at least two of a styryl group, an acryloxy group, a methacryloxy group and a polybutadiene group. The resin adhesive film prepared from the thermosetting resin composition has excellent dielectric properties, low dielectric loss tangent Df, good dielectric stability, small change range of △Df (10 GHz) after HAST, high chemical copper bonding capacity, and can fully meet the performance requirements of high-frequency high-speed printed circuit boards prepared by a semi-additive method or an additive method.