1113results about How to "Improve reinforcement" patented technology

Amino alkoxy-modified silsesquioxanes (amino AMS), and/or amino co-AMS compounds that also comprise a mercaptosilane or a blocked mercaptosilane, are excellent adhesives for coating plated or unplated metal wire for adherence of the wire to a rubber stock. The amino AMS and/or the amino/mercaptan co-AMS adhesives can be used with all types of rubber and there is no requirement for the use of special adhesive additives to the rubber vulcanizates, such as, but not limited to, cobalt, resins and high sulfur levels. In particular, the use of amino AMS and/or amino/mercaptan co-AMS compounds as adhesives for bonding wire to rubber also improves the adherence performance of the reinforcements to obtain sufficient bonding that is resistant to degradation over the course of time, especially resistance to thermal aging and/or thermo-oxidizing aging, in particular corrosion in the presence of water.

The present invention provides a hydrophobic precipitated silica having the following properties:

The present invention also provides methods for making and using the hydrophobic precipitated silica and articles and compositions which include the same.

Potassium titanate is obtained which has a novel configuration, exhibits excellent wear resistance when incorporated in a friction material and shows an excellent reinforcement performance when incorporated in a resin composition. A manufacturing method of the potassium titanate, a friction material using the potassium titanate and a resin composition using the potassium titanate are also obtained. The potassium titanate is represented by K₂Ti_nO_(2n+1) (n=4.0-11.0) and has the highest X-ray diffraction intensity peak (2θ) in the range of 11.0°-13.5° with its half width being not less than 0.5°.

The invention discloses a construction method of a high-tension water-rich extra-large-section weak breccia tunnel. The method includes the steps of exploring distribution of fault weak breccia in front of a tunnel face by an advanced geological forecast method; distributing L-shaped gradient drain holes in two inner sides of the tunnel, providing sector drain holes and grouting holes, and allowing upper grouting and lower drainage; providing a combined cylinder grout-stopping wall, and performing a full-face advanced chemical grouting consolidation; constructing an advanced long tube shed with a circumferential closed advanced tube shed guide wall having a foundation, distributing tapered quincunx examining drain holes to detect grouting effect, and finally excavating the tunnel. Through the use of the techniques such as three-layer stereoscopic grouting and drainage, and cement-water glass and epoxy resin sequential grouting, the problem that a high-tension water-rich surrounding rock area with loose weak breccia has ineffective grouting consolidation and non-obvious water plugging effect is solved.

The invention discloses a construction method for undermining a connected channe between shield sections in a water-rich sand cobble stratum tunnel. The construction method comprises steps of preparing for construction, constructing for a precipitation well, performing grouting reinforcement on stratum around a segment of a connection port of the connected channel, performing pre-measurement line drawing for a segment dismounting part on the segment of the connection port of the connected channel, setting up a temporary steel support at the connected channel, setting up a pipe shed and performing pipe shed grouting reinforcement, cutting the segment dismounting part and monitoring segment deformation and vault crown settlement conditions in real time, beginning to perform earth rock excavation and initial stage support of the connected channel, performing earth rock excavation and initial stage support of a pump house, performing waterproof construction of the connected channel, performing secondary lining for the connected channel and the pump house and second lining back grouting, dismounting the steel support and cleaning the site, and accepting check. The construction method of the invention is applicable to the construction of the water-rich sand cobble stratum connected channel, is reasonable and strict in layout, safe in construction process and multiply guaranteed in construction quality.

The invention relates to a manufacturing method of an electronic-grade polyimide film with low linear expansion coefficient. The method is characterized by comprising the steps that (1) the step-by-step condensation polymerization technology or the blending compounding technology is used for obtaining two or more polyamide acid glue solutions comprising rigid structures and soft structures at the same time and are different in rigidity and softness; (2) ultrafine inorganic whiskers, like zinc oxide whiskers, silicon carbide whiskers and zirconium tungstate whiskers, which are subjected to surface organic modification already and/or nanoparticle materials are smashed and cavitated through high-energy-density supersonic waves, and then the functional fillers are compounded with polybasic polyamide acid in an in-situ micro-nano mode; (3) the compounded glue solutions are subjected to filtration, vacuum defoamation, extrusion casting filming, chemical amidization or thermal amidization, infrared complete amidization, high-temperature thermal forming processing, corona processing and a reeling process, and therefore the electronic-grade polyimide film with the thickness being 7.5-125 micrometers, the linear expansion coefficient being 5-18ppm/DEG C, and good physical mechanical performance is obtained.

The invention discloses a concrete hollow slab bridge reinforced by transverse steel beams. The concrete hollow slab bridge comprises a bridge deck beam constituted by arranging a plurality of hollow plate beams in parallel and at least one stiffening cross beam which is arranged on the bottom surface of the bridge deck beam and is used for transversely reinforcing the bridge deck beam so as to enable all the hollow plate beams to transversely transfer loads on the hollow plate beams, wherein the stiffening cross beam is fixedly connected with the hollow plate beams. According to the concrete hollow slab bridge reinforced by the transverse steel beams, disclosed by the invention, the overall structural strength is high, the bearing capacity of the bridge is strong, the single-plate stress can be avoided by reinforcing through the transverse steel beams, the service life of the bridge is prolonged, and the concrete hollow slab bridge has the advantages of simple structure construction, easiness in ensuring engineering construction quality, good stress performance, obvious reinforcing effect, convenience and quickness in construction, lower requirements for machines, tools and equipment required for construction and significant economic benefits, and is further conductive to popularization.

The invention provides a large filling bag ecological embankment and revetment building method for a river lake channel. The method comprises the steps that (1), on the basis of cleaning and leveling, an embankment structure is filled with cleaned river lake bottom mud layer by layer through the large filling bag technology until the embankment structure reaches up to a designed elevation of the embankment top and the height of 0.5-1 m beyond the designed elevation is reserved through filling construction; (2), the cleaned river lake bottom mud is filled through a land pump, or special complete equipment and corresponding construction technologies are adopted to directly conduct mechanical paving and filling, and then the filled cleaned river lake bottom mud is sewn into bags; and (3), filling soil materials of the large geotextile filling bag embankment structure are taken from local resources, the bottom mud obtained through river lake regulation and channel excavation and cleaning is used as the filling soil materials, the initial water content of the filling soil materials is controlled within the range from 50%-80%, and the large filling bag embankment structure which is layered appropriately is adopted according to the practical situation. According to the method, the design is reasonable, the process is simple, construction is easy, operation is convenient, cost is low, popularization is easy, the ecological functions are good, and the method is applicable to ecological management and ecological channel construction of river lakes in soft soil areas.

A buoyancy module comprises a multi-layer outer protective shell that has an exterior surface and an interior surface. A first layer of foam buoyancy material is located adjacent to the interior surface. A second layer of foam buoyancy material that includes macrospheres and syntactic foam is surrounded by the first layer of foam buoyancy material. The multi-layer outer protective shell can include a layer of fiberglass backed by a fibrous plastic liner. In this embodiment, the layer of fiberglass provides the exterior surface of the multi-layer outer protective shell, while the fibrous plastic liner provides the interior surface of the protective shell. The second layer of foam buoyancy material can be a precast material. The precast material can include for example macrospheres and syntactic foam. The first layer of foam buoyancy material is preferably a stronger layer than the second layer of foam buoyancy material. Advantageously, the buoyancy module has a plurality of different layers, wherein the components of greatest strength and density are located on the outside. The multi-component system improves ruggedness of the buoyancy material, and provides increased reinforcement at locations subject to increased bending strengths, and provides a buoyancy module of longer life. In addition the buoyancy module may also include steel support members where bolting loads and other forces are brought to bear when parts are attached.

The invention discloses a high performance XNBR rubber containing graphene oxide and its preparation method. The preparation method comprises the following steps: adding graphite oxide into a surface modifier for ultrasonic stripping; carrying out centrifugal separation so as to obtain surface modified single-layer graphene oxide; mixing the single-layer graphene oxide with XNBR rubber latex; then successively adding an anti-aging agent and a flocculant and preparing a rubber mixture by using a co-coagulation method; and adding a vulcanizing agent for vulcanization so as to obtain graphene oxide-containing XNBR vulcanized rubber with high mechanical properties and high thermal conductivity. According to the invention, since the surface modifier is added in the process of stripping, stability and surface tension of graphene oxide suspension are changed, graphene oxide and the latex are allowed be uniformly mixed, and the degree of homodisperse of graphene oxide in a polymer is improved, and therefore, the purpose of improving mechanical strength of XNBR is achieved.

The invention provides a deep soft foundation reinforcement treatment method. The deep soft foundation reinforcement treatment method comprises the following steps: leveling the site of a region to be reinforced; filling a sand bed; inserting a vertical drainage body; digging sealing ditches; laying vacuum lines; mounting a vacuum unit, vacuumizing, laying geotextile on a film when the vacuum degree under the film reaches 80 kPa or above and is stable, and starting heaped loading construction; after the foundation in the region to be reinforced reaches the control consolidation degree (60-80 percent), relieving pressure step by step till stopping vacuumizing; after vacuum pre-pressing unloading, carrying out precipitation construction; performing dynamic compaction; and leveling the site to the construction level. The deep soft foundation reinforcement treatment method combines the functions of vacuum negative pressure, heaped loading positive pressure and dynamic load to form a static-dynamic consolidation compounded reinforcement technology. Compared with a traditional drainage consolidation method, the deep soft foundation reinforcement treatment method shortens 1/3 of the construction period and reduces 30 cm or above of post-construction settlement; and compared with a drainage consolidation + composite foundation secondary treatment method, the deep soft foundation reinforcement treatment method lowers the construction cost by 20-40 percent, is more remarkable in soft foundation reinforcement effect and is suitable for large-area application and popularization.

The invention relates to a construction method for a vibration sinking pipe crushed stone grouting pile, which is a new method which integrates foundation treatment and deep foundation construction process into a whole and comprises the steps as follows: (1) sinking pipe is vibrated; (2) a reinforcing cage and an injection pipe are placed; (3) crushed stone is poured; (4) the pile is formed by pulling the pipe under vibration; (5) a drainage ditch is excavated; and (6) the pile is formed by injection. The method solves the problem that the prior art can not be compatible with the foundation treatment and deep foundation construction and makes up the shortages of the prior art.

The invention discloses a reinforcing sheet design and a reinforcing method for a fiber composite material opening workpiece. A matched reinforcing sheet is designed in accordance with the shape and the size of the opening portion of the workpiece. The fiber trajectory of the reinforcing sheet consists of a radial trajectory layer and an annular fiber trajectory layer, presoaked or unsoaked fiber bundles are used for preparing the reinforcing sheet in accordance with the designed fiber trajectory, the reinforcing sheet is laid on the reinforcing portion of an opening, the reinforcing sheet is cured to the opening portion through an integral curing process or a secondary curing process, and the opening reinforcement of the fiber composite material opening workpiece is achieved. The reinforcing sheet has the advantages of being simple in design, good in reinforcing effect, free from cutting, suitable to mass production and wide in application prospects.

The invention provides a method and a system for scanning a cross-site vulnerability. The method comprises the following steps of crawling the links of the full site or the single page of a target site; filtering the links obtained by crawling according to a preset condition, so as to obtain a plurality of potential cross-site vulnerability links; carrying out a fuzzy test on each potential cross-site vulnerability link by adopting an attack vector; in the process of the fuzzy test, dynamically analyzing the webpage source code of each potential cross-site vulnerability link by adopting the inner core of a browser, so as to judge whether the potential cross-site vulnerability link has the cross-site vulnerability or not; storing the link having the cross-site vulnerability and the attack vector loaded correspondingly in a database. By using the method and the system for scanning the cross-site vulnerability, a method and a system, which are high in efficiency, low in false alarm rate and complete in scanning, for detecting the cross-site vulnerability can be provided.

Conventional nanocomposites using swelling layered silicates, which are low specific gravity and have markedly improved heat resistance, rigidity and gas barrier compared with talc or mica filling composites, are available. They are, however, much inferior to glass fiber filling composites (FRP) for rigidity and heat resistance if not regarding difference of specific gravity and they may not respond to current high level requirements. The inventors have found that an organic-inorganic composite can be formed by substituting K ions between layers of high-crystalline non-swelling layered silicates composed of mica and having primary particles of large particle size with any positive charged organic compound under specific conditions, leading to completion of the invention which enables production of polymer composite materials having the layered silicates delaminated and dispersed. This organic-inorganic composite is useful as a sheeted filler having a high aspect ratio and the aspect ratio of which further can be increased by dispersing it in a polymer matrix.

The invention discloses a beam-removing rib-increasing strengthening construction technology of a highway bridge. A bearing beam of a strengthened bridge comprises a plurality of hollow beam plates. The technology comprises the following steps: chiseling and removing an original collision prevention guardrail and a bridge face laying layer; eliminating a transverse connection hinge seam between the two adjacent hollow beam plates; hanging and moving the hollow beam plates and supporting reasonably; embedding ribs and pouring the pad stone of a supporting seat anew; checking, determining, recycling the hollow beam plates, repairing defects and processing cracks; sticking the beam bottoms of edge beams and strengthening steel plates; anew installing the hollow beam plates transversely at intervals; constructing rib beams which are added newly; constructing a steel bar net of the bridge face laying layer and embedding the steel bar of the collision prevention guardrail in advance; pouringthe concrete of the bridge face laying layer; and constructing the collision prevention guardrail and installing bridge face expansion joints. The invention has reasonable design, smaller execution difficulty, simple construction steps and low construction cost, has small damage to the original hollow beam plates, can enhance the bearing capacity of an original structure of a hollow plate bridge,has very good strengthening effect and can effectively solve the strengthening problem of the hollow plate bridge.

The invention discloses a fastening method of steel-self density concrete composite construction, which is characterized by the following: adopting steel-concrete composite structure; adopting self density concrete on concrete material; proceeding original concrete structure element surface treat; assembling steel; stirring and casting self density concrete; demoulding; curing. This invention possesses simple and stable construction, which can increase bearing capacity, stability and fatigue resistance property of the concrete structure.

The invention relates to a method utilizing calcium carbide slag as a raw material to produce a gypsum crystal whisker, and belongs to the field of inorganic material preparation and solid waste comprehensive utilization. The method utilizing calcium carbide slag as the raw material to produce the gypsum crystal whisker is characterized by comprising the following steps: (1) drying, ball milling and calcining the calcium carbide slag; (2) enabling the obtained calcium carbide slag to react with dilute sulfuric acid after the calcining treatment step, and washing and centrifuging the precipitation product; (3) mixing the solid obtained in the step (2) with water to prepare size, adding a crystal aid with a certain mass fraction in the size, transferring the mixed solution in a hydrothermal reaction kettle to carry out hydrothermal reaction, and washing, centrifuging and drying the product after the hydrothermal reaction to obtain the gypsum crystal whisker product prepared by taking the calcium carbide as the raw material. The method is mild in reaction conditions, simple in process, flexible in operation, and easy for industrial production. The prepared gypsum crystal whisker is large in draw ratio and good in reinforcing performance.

The invention provides a preparation method of a self-repairing conductive double network structure hydrogel. The hydrogel is a carbon nanotube/chitosan double network structure hydrogel, a first network is formed by electrostatic interaction of carboxylated carbon nanotubes and chitosan, and a second network is a hydrophobic association network hydrogel obtained by free radical polymerization ofmain monomer acrylamide or N-isopropyl acrylamide and hydrophobic monomer octyl methacrylate, dodecyl methacrylate, hexadecyl methacrylate or long-chain aliphatic acrylate. The introduction of the carbon nanotubes provides excellent conductivity for the hydrogel, and the hydrophobic monomer can stably form a hydrophobic association center in an emulsifier, and has an obvious reinforcing effect onthe hydrogel, and the obtained hydrogel ahs significantly-improved strength. In addition, the presence of ionic and hydrophobic association effects provides a rapid self-healing property for the hydrogel, and the hydrogel is useful in bionic biology, flexible electronics, biosensors and other fields.

The invention discloses a system for reinforcing a sand-contained soil interlayer soft foundation in a vacuum-electro-osmosis combination mode. The system is composed of subsection EKG drainage electrodes, flexible conductive joints, conductive circuits, a direct-current power supply, a power supply control system, plastic drainage boards, horizontal drainage pipelines, a vacuum pump and the like. The subsection EKG drainage electrodes are connected with one another through the flexible conductive joints, the rough drainage electrodes are used in a soft soil layer, the fine drainage electrodes are used in a sand soil layer, each fine drainage electrode is sleeved with a corrosion-resistant insulating rubber tube, and part, located on a sand soil interlayer, of the drainage boards are wound with a ring of water-proof material through strong water-proof adhesives. The invention further discloses a use method of the system, static sounding is conducted on the positions of the drainage electrodes and the positions of the drainage boards, processing and assembling are conducted on the drainage boards and the drainage electrodes according to results, and finally the soft foundation is reinforced in the vacuum pre-compaction and electro-osmosis drainage combination mode. The system can reinforce the sand-contained soil interlayer soft foundation by combining a vacuum pre-compaction ground treatment method and an electro-osmosis drainage ground treatment method.