12 results about "Polypropylene mesh" patented technology

The invention belongs to the technical field of cement pole materials, and particularly relates to a high-strength cement pole material and a preparation method thereof. The high-strength cement pole material is prepared from the following components in parts by weight: 450 to 500 parts of cement, 60 to 80 parts of fly ash, 500 to 550 parts of fine aggregate, 800 to 1000 parts of coarse aggregate, 80 to 120 parts of slag powder, 30 to 50 parts of composite fiber, 5 to 10 parts of redispersible latex powder, 2 to 6 parts of water reducing agent and 100 to 150 parts of water, the composite fibers comprise modified basalt fibers and polypropylene reticular fibers. According to the high-strength cement pole material provided by the invention, the polypropylene reticular fibers and the specific modified basalt fibers act together, so that the cement pole material has high compressive strength and high breaking strength, and a cement pole prepared from the cement pole material has high flexural capacity.

This invention relates to the field of power cable technology, specifically to a cross-linked polyethylene insulated mining power cable, comprising a conductor and a protective assembly. The protective assembly includes an insulation section, a flame-retardant section, a metal shielding layer, an inner sheath, an armored buffer layer, a buffer filling layer, and an outer sheath. The armored buffer layer is essentially a galvanized steel corrugated pipe, longitudinally welded into a tubular shape and fitted over the cable to form the armored buffer layer. It provides compressive and impact resistance exceeding that of steel wire armor, and the corrugated structure has inherent elasticity, enabling it to buffer external forces. The buffer filling layer uses flame-retardant polypropylene mesh tear rope, which tightly fills the gap between the armored buffer layer and the inner sheath, further enhancing the buffering effect. This invention can improve the cable's impact resistance, prevent impact energy from being conducted to the internal insulated core wires of the cable, and prevent safety accidents such as insulation damage and short circuits.

This utility model relates to the field of cable technology, and in particular to a composite cable. The buffer layer is fixedly connected to the inner sheath layer and the braided layer on both sides, respectively, and the outer wall of the second reinforcing strip is fixedly connected to the braided layer. This composite cable, through the cooperation of polypropylene mesh filler, braided layer, and protective structure, uses a first reinforcing strip spirally wound within the polypropylene mesh filler to directly enhance axial tensile strength and prevent excessive constraint on cable bending. The second reinforcing strip, mixed into the braided layer, works synergistically with the original braided layer to enhance overall impact resistance. The buffer layer directly buffers external impacts on the cable body, protecting the internal insulation layer; it also improves flexibility during bending. The strength can be increased through the first and second reinforcing strips, reducing the possibility of breakage due to stress concentration. When the cable is impacted, the buffer layer acts as a buffer, reducing conductor deformation or breakage.

This item is a cylindrical body made of a polypropylene mesh material, and is a cylindrical young tree protector that covers seedlings to prevent them from being eaten by wild animals. It consists of a single piece of mesh material, and as shown in the enlarged view of the reference AA part, the cylindrical body and the support insertion part are formed by sewing at two joints.

The application belongs to the technical field of cement pole material, and particularly relates to a high-strength cement pole material and a preparation method thereof. The high-strength cement pole material comprises the following components in parts by weight: cement 450-500 parts, fly ash 60-80 parts, fine aggregate 500-550 parts, coarse aggregate 800-1000 parts, slag powder 80-120 parts, composite fiber 30-50 parts, redispersible latex powder 5-10 parts, water reducing agent 2-6 parts, and water 100-150 parts. The composite fiber comprises modified basalt fiber and polypropylene reticular fiber. The high-strength cement pole material provided by the application uses polypropylene reticular fiber and specific modified basalt fiber to jointly act, so that the cement pole material has high compressive strength and high flexural strength, and the cement pole prepared from the cement pole material has high bending bearing capacity.

The invention relates to the technical field of electrochemical surface treatment, and discloses a platinum electroplating process for corrosion prevention and scale inhibition of an inner cavity of a converter valve aluminum radiator, which comprises the following steps: degreasing and activating the surface of an aluminum alloy radiator with a runner, and constructing a microscopic rough surface; an auxiliary counter electrode wrapped with a polypropylene net sleeve is arranged in the center of the runner; injecting an electrolyte consisting of chloroplatinic acid, phosphate and an interfacial agent into the runner; and adjusting the pressure of a circulating pump, so that the flow velocity of the electrolyte is periodically switched between a high speed and a low speed, and the cathode current density is controlled to be synchronously adjusted and increased in a flow velocity rising edge interval. And a compact platinum layer with uniform thickness and stable adhesion is formed on the inner surface of the radiator.

The invention discloses a metalized polypropylene reticular safety film, and belongs to the field of capacitors. A metalized polypropylene net-shaped safety film comprises a base film and further comprises a plating layer structure arranged on the base film, the plating layer structure is sequentially provided with a thickening area, a transition area and a movable area in the length direction of the base film, the thickening area and the transition area are each of an aluminum-base-zinc thickening layer structure, and the movable area is of an aluminum layer structure; the marginal area is arranged in the marginal area of the plating layer structure; the protruding section is located at the starting end of the thickening area; wherein the plurality of rhombic unit structures of the plating layer structure are distributed in a continuous net shape; electric field concentration can be avoided, so that the direct-current breakdown voltage of the film is improved, the stable working requirement in a high-voltage environment is met, the problem that high-voltage breakdown is prone to occurring in the background technology is solved, meanwhile, the overall performance of the base film is improved, the service life of the base film is prolonged, the base film is prevented from being affected by oxidation and other factors, and the stability and reliability of the base film are guaranteed.

The invention discloses a high-strength heat preservation rock wool building board and a preparation method thereof, and relates to the technical field of building engineering, and the high-strength heat preservation rock wool building board comprises a rock wool board base body, flexible buffer strips, an alkali-resistant polypropylene grid film, a dry hanging piece, an annular buffer gasket and an inorganic heat insulation gasket. The full-length equal-interval flexible buffer strips which are synchronously paved with rock wool fibers and integrally pressed and formed are arranged in the rock wool board base body, the alkali-resisting polypropylene grid films are compounded on the front face and the back face of the base body, and the dry hanging pieces which can be mechanically locked and fixed with the grid films and are provided with adjusting structures are pre-embedded in the base body. Annular buffer gaskets are arranged at the embedded ends of the hanging pieces in a matched mode, inorganic heat insulation gaskets are arranged on the contact faces of the hanging pieces, the plates and the external keels, and the avoiding arrangement structure of the flexible buffer strips and the embedded point positions of the dry hanging hanging pieces is optimized. The technical problems that a traditional rock wool building board is insufficient in dry hanging anchoring force, interlayer stripping is prone to occurring, cracking and falling off are prone to occurring when the rock wool building board is stressed, the mounting and adjusting adaptability is poor, and cold and hot bridge loss is large can be solved.

The invention relates to the technical field of building structure materials, particularly discloses an anti-cracking reinforcing treatment method for a steel wire net frame plate, and aims to solve the problems that the bonding reliability between the existing steel wire net frame plate and a plaster layer is poor, and the existing steel wire net frame plate and the plaster layer are easy to crack. The method comprises the following steps: performing high-pressure water jet pretreatment on a plate surface; coating a macromolecular modified cement-based interface agent; laying Z-direction fiber bundles, aligning the Z-direction fiber bundles with the three-dimensional polypropylene grids of the web wires, and anchoring; gradient modulus mortar is applied in two ways, and the fine cold-drawn steel wire is embedded; phase change energy storage capsules are pre-buried in the abdominal wire area to compensate the heat bridge effect; multi-axis prestress is applied before initial setting; and carrying out damp-heat curing after final setting. Through the synergistic technical means, the bonding strength and the crack resistance are remarkably improved, no visible crack exists after 50 times of freezing and thawing or 100 days of alternate wetting and drying, the bonding strength is improved by 2.3 times or above, and the impact resistance is improved by about 70%.

The invention discloses a titanium coating composite polypropylene reticular patch as well as a preparation method and application thereof, and belongs to the technical field of medical instruments. The preparation method comprises the following steps: carrying out plasma activation treatment on the surface of the polypropylene reticular patch by adopting a mixed gas of Ar and O2 at the power of 100-300W for 5-15 minutes; a titanium coating is formed on the surface of the activated polypropylene mesh patch by adopting a magnetron sputtering titanium target, a polymer film containing silver or a medicine is formed on the surface of the titanium coating through plasma enhanced chemical vapor deposition, and the titanium coating composite polypropylene mesh patch is obtained and used as an implant for treating hernia. Through dual regulation and control of the weaving structure and the coating, the mechanical property requirement and the biological property requirement of the human body implant are met, and huge value is brought to the medical PP film and the biological implantation medical industry.

The invention discloses a drug-loaded mesoporous polydopamine coating polypropylene patch, and belongs to the field of medical material preparation, a preparation method comprises the following steps: dissolving 450-600mg of a mesoporous template agent in a specific amount of a water / ethanol mixed solvent, then adding 0.6-1.2 mL of a pore-enlarging agent, and treating to obtain a template solution; adding 700-800mg of a DA monomer into the template solution, adding a PP patch, after the DA monomer is uniformly dispersed, adding 1.5-2.0 mL of an alkaline reagent, keeping out of light at room temperature until the DA monomer is subjected to oxidative auto-polymerization, and generating an MPDA coating on the surface of the PP patch to obtain an MPDA-PP patch; immersing the MPDA-PP patch into anti-fibrosis PBS (Phosphate Buffer Solution), and shaking in a dark place until medicine loading is completed, so as to obtain the medicine-loaded mesoporous polydopamine coating polypropylene patch. The patch can realize visual detection while actively inhibiting peritoneal fibrosis, so that the recurrence risk is reduced, the postoperative management accuracy is improved, and an innovative solution is provided for incisional hernia treatment. The invention also discloses an application of the patch in herniorrhaphy.

This item is a cylindrical body made of a polypropylene mesh material, and is a cylindrical young tree protector that covers saplings and other young trees to prevent them from being eaten by wild animals. The black lines are for marking the points where the black lines intersect when driving stakes into the ground.