14results about How to "Improve long-term durability" patented technology

The application provides a kind of underwater concrete rapid repair material, by weight fraction, including the following components: cementing material system 67-80 parts, dual functional graphene system 0.6-1.2 parts, intelligent curing adjustment system 3-5 parts, auxiliary additive 2-3 parts, filler system 20-25 parts and water 18-25 parts;The dual functional graphene system includes hydrophilic amino graphene and hydrophobic sulfhydryl reduced graphene oxide, and the mass ratio of the two is (1.2-1.8):(0.8-1.2);The intelligent curing adjustment system includes microcapsule coated temperature-sensitive coagulant 2-3 parts and in-situ whisker generation precursor 1-2 parts.The application realizes underwater rapid curing, strong bonding, high toughness, long-term protection integration, and provides a high-performance solution for the rapid repair and emergency repair of hydraulic and marine infrastructure.

The utility model relates to the technical field of bricks, and particularly discloses a low-carbon environment-friendly self-cleaning brick which comprises a brick body, a photocatalytic film layer, a biochar layer and a water permeable layer are respectively arranged on the top surface of the brick body, a waterproof layer is arranged on the bottom surface of the brick body, the photocatalytic film layer is made of titanium dioxide, the biochar layer is made of biochar, and the water permeable layer is made of water. According to the low-carbon environment-friendly self-cleaning brick, the photocatalytic film layer, the biochar layer and the water permeable layer are arranged on the top face of the brick body, harmful gas in air can be effectively decomposed, pollutants can be strongly adsorbed, rainwater can be promoted to permeate rapidly, and therefore the low-carbon environment-friendly self-cleaning brick has the advantages of being environmentally friendly, environmentally friendly and capable of being recycled. And the waterproof layer arranged on the bottom surface of the brick body effectively prevents water in the brick body from leaking to the outside of the brick body, so that damages such as corrosion, deformation and the like of a building structure caused by accumulated water erosion are reduced, the durability is improved, and the practicability is high.

The invention relates to the technical field of environment regulation and control, in particular to a plant root domain microclimate environment regulation and control method capable of adaptively regulating moisture and heat, which comprises the following steps: preparing a bionic microelectrode array capable of specifically sensing a root electric signal; constructing an electric signal-chemical signal conversion layer; printing a multi-channel bionic catheter network with a fractal structure and assembling a photo-thermal response micro-valve; and finally, integrating the intelligent microcapsule and the microbial system to form a functional module. According to the method, a signal is efficiently captured through a graphene-membrane protein interface, the signal is converted into a chemical instruction through a ferrocene / heme system, a liquid crystal valve is driven to regulate and control the water and gas flux in a fractal network, and the phase change heat storage and self-repairing functions of microcapsules are combined; an intelligent root domain environment system capable of dynamically responding to plant physiological needs, resisting environmental stress and promoting microbial symbiosis is constructed in a cooperative mode, and the water utilization efficiency and the ecological restoration effect are remarkably improved.

The invention discloses a concrete curing system and method based on multi-technology fusion, and belongs to the technical field of concrete curing. The problems that an existing concrete curing technology is long in period and single in efficiency are solved. The device comprises a curing box body, a microwave acceleration curing module, a CO2 curing module and a microorganism curing module, wherein the curing box body is sequentially provided with a microwave acceleration area, a CO2 curing area and a microorganism curing area from front to back; the microwave acceleration curing module is arranged in the microwave acceleration area and is used for heating the concrete test piece; the CO2 curing module is arranged in the CO2 curing area and is used for performing pressurized carbonization curing on the concrete test piece; the microorganism curing module is arranged in the microorganism curing area and is used for repairing micro-cracks appearing on the concrete test piece. The concrete test piece curing device is mainly used for curing concrete test pieces.

The utility model relates to tire technical field discloses a kind of lightweight, low deformation's tire, including bead, the outer wall of bead is provided with tread, the tread is uniformly provided with pattern block, the inner wall of bead is provided with bead wire in one end near bead center, the inner wall of bead is provided with pad rubber in one end away from bead center, the outer wall of pad rubber is sleeved with belt, the pad rubber adopts ingot type pad rubber, the tread adopts wing type tread, the belt 1 belt layer adopts B45-33ST 24 °, 2 belt layer adopts B45-33ST 18 °, 3 belt layer adopts B40-35HI 18 °, 0 ° belt layer adopts B40-22HE.In the utility model, wing-shaped tread and ingot type pad rubber are used to respectively improve structural performance and balance inner contour, and by matching belt layer of different width, the tension of necessary part is improved.

This invention relates to the field of grouting technology, specifically disclosing an adaptive micro-expansion organic-inorganic hybrid grouting and sealing material and its preparation method, which consists of two components, A and B: Component A is a pumpable viscous liquid, comprising the following components by weight: 90-110 parts of castor oil-based polyurethane prepolymer, 5-15 parts of sulfonate-modified nano-montmorillonite, 8-15 parts of plasticizer, and 3-8 parts of functional nanofibers; Component B is a free-flowing solid powder, which is a microencapsulated water-based curing agent, used in an amount of 10-30 parts by weight. This invention utilizes the ordered interlayer water absorption characteristics of sulfonate-modified nano-montmorillonite to achieve mild and controllable micro-expansion upon contact with water, effectively overcoming the risks of excessive internal stress and structural damage caused by the violent and uncontrollable foaming of traditional hydrophilic materials, ensuring the safety and effectiveness of filling in a closed base plate environment.

The embodiment of the invention provides surface-treatment-free PVC artificial leather. The surface-treatment-free PVC artificial leather comprises a functional PVC surface layer, a PVC foaming layer, a glue layer and a base cloth layer, wherein the functional PVC surface layer at least contains PVC resin, a plasticizer, linear polydimethylsiloxane, talcum powder, hollow glass beads and a thermal reversible cross-linking agent, and does not contain a polyurethane surface treatment layer. According to the surface-treatment-free PVC artificial leather, the failure risk of a polyurethane surface treating agent layer is eradicated, a series of interface reliability problems of interlayer adhesion reduction, surface layer swelling, softening, pulverization and the like caused by plasticizer migration are fundamentally eliminated by canceling the polyurethane surface treating agent layer, the long-term durability of the product is qualitatively improved, and the service life of the product is prolonged. The performance of the material is derived from the material body, and even if the surface is worn due to long-term use, the newly exposed material still has the same chemical components and functions, so that the stable performance of the product is realized.

This invention relates to a novel metallocene compound, a catalyst composition comprising the metallocene compound, and a method for preparing olefin polymer using the catalyst composition.

The invention relates to the technical field of soft soil treatment, and discloses a curing agent for coastal soft soil and a manufacturing process of the curing agent. The process comprises the following steps: carrying out coarse and fine grading pretreatment on the furnace bottom slag, carrying out acid activation treatment on the zeolite powder, carrying out surface modification treatment on the basalt fiber, preparing a component A delayed coagulation curing agent, preparing a component B coagulation accelerating curing agent, and compounding the two components in proportion for use. The curing speed can be adjusted within 15-90 minutes by compounding the component A and the component B according to different mass proportions, and a double-phase structure of a rigid framework and a gelling matrix is formed by the surface modified basalt fibers and graded furnace bottom slag coarse particles. The rheological property of slurry is adjusted through selective ion adsorption of acid activated zeolite powder and molecular chain extension of hydroxypropyl methyl cellulose, and the technical problems that a coastal soft soil curing agent is large in brittleness, poor in construction adaptability, non-adjustable in curing speed and low in synergistic utilization rate of various solid wastes are solved.

Provided are a polishing pad and a method of manufacturing a semiconductor device using the same, the polishing pad having a structure that maximizes a water leakage prevention effect, including: a polishing layer including a first surface and a second surface, and a first through-hole passing through the first surface to the second surface; a window disposed in the first through-hole; and a support layer disposed on the second surface side of the polishing layer, including a third surface and a fourth surface, and a second through-hole passing through the third surface to the fourth surface while being connected to the first through-hole, the second through-hole being smaller than the first through-hole, a lowermost end surface of the window being supported by the third surface, a first adhesive layer being included between the lowermost end surface of the window and the third surface, a second adhesive layer being included between the second surface and the third surface and between the lowermost end surface of the window and the third surface, a barrier layer being included on one surface of the second adhesive layer, and the support layer including a compression portion in a region corresponding to the lowermost end surface of the window.

The utility model provides a waterproof connecting structure of an anti-floating anchor rod node, and belongs to the technical field of anti-floating anchor rod construction of constructional engineering. The structure comprises an anti-floating anchor rod, a waterproof connecting assembly, a polymer cement waterproof mortar layer and a fine aggregate concrete protection layer. The lower end of the anti-floating anchor rod is anchored in the concrete anchoring body of the basement structure layer, and the upper end penetrates through the anchoring plate through hole; the waterproof connecting assembly is composed of an anchoring plate and a pre-buried support, the lower end of the pre-buried support is pre-buried in the concrete anchoring body, and the anchoring plate is fixed between the supports. The concrete cushion layer and the anchoring body are sealed through polyurethane sealant, and a waterproof mortar layer, a self-adhesion waterproof roll and a reinforced fine aggregate concrete protection layer are sequentially laid on the concrete cushion layer and the anchoring body to form a totally-closed waterproof system. Through the design of multi-layer collaborative protection and the rigid support, the problems that a traditional joint is prone to leakage, and the anchor plate displaces are solved, the horizontal displacement resistance is improved, the construction efficiency is improved, and the anti-floating joint is suitable for anti-floating projects such as basements and basement and has high waterproofness, structural stability and economical efficiency.

The invention discloses a basalt short fiber reinforced concrete outdoor hollow decorative plate and a preparation method thereof, and relates to the field of fabricated buildings. In order to solve the problems that a traditional concrete outdoor hollow decorative plate is prone to cracking, large in dead weight and insufficient in durability, and basalt short fibers are prone to agglomeration and weak in bonding force with a matrix interface, the modified basalt short fibers are prepared through heat treatment in combination with modification of a modified coating solution, and activated silica fume, pretreated fly ash, compound cement and other raw materials are mixed; according to the preparation method, the interface bonding property and the matrix microstructure among the raw materials are optimized, the compression resistance, the crack resistance and the bending strength of the decorative plate are effectively improved, the water absorption rate is reduced, light weight and durability are both considered, and the decorative plate has the advantages of being simple in preparation process, low in cost and high in practicability. And the requirements of assembly type construction are met.

The invention belongs to the technical field of building materials, and discloses a high-toughness cement-based repairing material based on bionic adhesion and self-repairing functions and a preparation method thereof.The high-toughness cement-based repairing material is prepared from, by mass, 400-500 parts of ordinary Portland cement, 250-300 parts of high belite sulphoaluminate cement, 100-150 parts of mineral powder, 20-50 parts of silica fume and 10-30 parts of redispersible latex powder; the invention relates to a high-temperature-resistant and wear-resistant concrete which is prepared from the following components in parts by weight: 5-20 parts of gas-phase nano silicon dioxide, 800-1000 parts of machine-made sand, 0.05-0.5 part of polydopamine modified graphene oxide, 1-5 parts of an epoxy curing agent, 2-5 parts of a water reducing agent, 2.5-3 parts of a defoaming agent, 0.4-0.5 part of a retarder and 250-300 parts of water. Wherein the epoxy curing agent is wrapped in the resin microcapsule. The interface bonding strength and toughness of the cement-based repairing material can be improved, and the repairing material has the damage self-recovery capability.

The invention discloses a high-bonding coating material suitable for a wet concrete base surface and a preparation method of the high-bonding coating material, belongs to the technical field of concrete surface protection, and aims at solving the problems that in the related technology, an existing coating material for wet concrete is insufficient in bonding strength; the long-term water resistance is poor; the curing speed and the constructability are difficult to consider at the same time. The high-adhesion coating material comprises a component A and a component B, the component A comprises an epoxy resin composition, a reactive diluent, a hydrophobic-hydrophilic filler and a coupling agent; the component B comprises a curing agent composition and a catalyst; the epoxy resin composition comprises bisphenol epoxy resin and an epoxy functional monomer, and the molecular structure of the epoxy functional monomer contains at least one catechol group; the hydrophobic-hydrophilic filler comprises silicon dioxide nanoparticles and phosphate hybrid filler. The coating material disclosed by the invention can be directly coated on a wet concrete base surface, does not need to be dried, polished or applied with a prime coat, and can realize high adhesive property and long-term durability.