6results about How to "Improve bonding" patented technology

The invention belongs to the technical field of high polymer materials, and particularly relates to organic silicon modified polyurethane polystyrene foam as well as a preparation method and application thereof. The polystyrene foam comprises a component A and a component B, the component A is prepared from 40 to 60 parts of polyethylene oxide polyol, 25 to 35 parts of cashew nut shell oil polyol, 15 to 25 parts of castor oil modified polyol, 5 to 10 parts of modified resin A, 18 to 22 parts of flame retardant filler, 0.5 to 1.5 parts of foam stabilizer, 0.1 to 0.2 part of catalyst and 0.4 to 0.9 part of pure water; the modified resin A is organic silicon modified resin which contains active amido and has alkoxy at the tail end; and the component B comprises the following components in parts by weight: 75-85 parts of polymerized MDI and 15-25 parts of prepolymer A. According to the invention, an organic silicon chain segment is connected into a polyurethane network in a chemical bond manner, so that high tensile strength and high bonding strength are maintained while the elongation at break is improved, and the technical problem that the performance of the polyurethane polystyrene foam is difficult to consider at the same time is solved.

The invention provides a pole piece of a lithium ion battery and a preparation method of the pole piece, the pole piece of the lithium ion battery comprises a current collector and an active material coated on the current collector, and by arranging the active material and an adhesive, the active material can be conveniently and rapidly fixed when being extruded and arranged on the current collector along an angle; the assembly state of the active material on the current collector is stabilized, the active material is placed in the slit die cavity to be extruded, the active material moves and deforms towards the single side direction, so that the structure becomes long and narrow, and the end part of the long and narrow active material is connected with the current collector to be rolled, so that the tortuosity of the lithium ion battery pole piece is reduced, and the service life of the lithium ion battery pole piece is prolonged. And the migration rate of lithium ions in the pole piece and the embedding rate of the lithium ions in the active material are accelerated, meanwhile, the problem that the pole piece is expanded and increased due to lithium ion embedding in the thickness direction of the pole piece is solved, and the probability of deformation of the lithium ion battery is reduced.

The application discloses an anti-erosion auxiliary gel material and a preparation method and application thereof. The preparation method of the anti-erosion auxiliary gel material comprises the following steps: 1) mixing regenerated red brick powder with a particle size of 3-10 microns, waste concrete regenerated micro powder with a particle size of less than 10 microns and water to perform a pre-hydration reaction, and then separating a solid product to obtain pre-hydration regenerated powder; 2) calcining the pre-hydration regenerated powder, and then rapidly cooling to room temperature and performing grinding to obtain active regenerated powder; and 3) uniformly mixing the regenerated red brick powder with a particle size of less than 3 microns and the active regenerated powder to obtain the anti-erosion auxiliary gel material. The anti-erosion auxiliary gel material can be added in a large amount in concrete, can effectively improve the anti-Cl ‑ erosion performance of the concrete, does not affect the mechanical properties of the concrete, and is suitable for large-scale industrialized production and application.

The application belongs to the field of ceramic powder preparation, and discloses a method for in-situ preparation of high-performance TiB2-B4C composite ceramic from sapphire fine grinding waste. The method uses the waste produced in the sapphire grinding process as raw material (B4C, Al2O3 and Fe), adds TiO2 and C after alkali washing and purification, and combines with the discharge plasma sintering to in-situ prepare TiB2-B4C composite ceramic. The method not only realizes the comprehensive recovery of B4C in the sapphire fine grinding waste slurry, reduces environmental pollution, but also provides a method for in-situ preparation of TiB2-B4C composite ceramic from waste, changes waste into treasure, and realizes the secondary use of resources. In addition, the raw material cost is low, and the method has obvious economic value and environmental protection significance. The method has the advantages of short process, small pollution, simplicity and the like, and can be used for industrial production.

The application provides a space on-orbit flexible sealant nail integrated self-sensing pressure sealing patch, which adopts a form of a sealant patch, and designs a stepped sealant nail integrated layered structure, which comprises a stepped flexible sealant nail integrated support layer, a flexible sealant body sealing and bonding layer, a metal protective backing, an aluminized film packaging bag, a silicon-based release paper, a ring-shaped film piezoresistive pressure sensor, a direct current ultra-fine heating wire, a micro 6-pin rectangular electric connector female head, a temperature measuring sensor PT100 and a portable sensing and processing module. By using the scheme, the problems that the existing leak sealing and repairing technologies cannot accurately and completely seal unknown shape leak holes, have poor space environment adaptability, cannot bear pressure and have poor anti-splitting performance and the like can be solved, and a better leak sealing effect is achieved.

The application discloses a connecting structure of prefabricated reinforced concrete columns and beams and a construction method thereof, and the structure comprises a lower prefabricated reinforced concrete column, an upper prefabricated reinforced concrete column and a beam arranged on the lower prefabricated reinforced concrete column, the upper end of the lower prefabricated reinforced concrete column and the upper prefabricated reinforced concrete column is provided with a hoop hoop steel plate, the lower end is provided with a vertical H-shaped short steel and a prefabricated column short plate, and column longitudinal reinforcement is arranged in the inside; the top end of the hoop hoop steel plate is welded with a prefabricated column top plate, the inside is provided with a lower layer horizontal reinforcing plate and an upper layer horizontal reinforcing plate, the lower end of the column longitudinal reinforcement is anchored on the prefabricated column end plate through a bolt anchor head, and the upper end is anchored on the upper layer horizontal reinforcing plate through a bolt anchor head; the vertical H-shaped short steel is welded with the prefabricated pile top plate, and the connecting area of the lower prefabricated reinforced concrete column and the upper prefabricated reinforced concrete column is filled with concrete. The application improves the connecting reliability of the upper prefabricated reinforced concrete column and the lower prefabricated reinforced concrete column and the safety of the overall structure.