39results about How to "Strong elastic recovery" patented technology

The invention discloses a construction method for a municipal road, and belongs to the field of the road engineering. A technical scheme is that the construction method comprises the following steps:positioning and paying off, excavating a roadbed groove, backfilling the roadbed groove, paving and bedding, laying a cement stabilization layer, spraying emulsified asphalt, laying a modified asphaltconcrete pavement, processing a construction joint, and maintaining the road. The invention further provides the municipal road obtained by the above construction method. The provided municipal roadhas the advantages of small interspaces between various layers, uniform sedimentation, and less generated cracks.

The invention relates to a teeth orthodontic material. On the basis of the total weight of the orthodontic material, the orthodontic material includes, by weight: A) 50-99.7% of polyethylene glycol terephthalate-1,4-cyclohexanedimethanol ester; B) 0-40% of polycarbonate, C) 0-20% of a thermoplastic polyurethane elastomer; and D) 0.3-5% of nano silicon dioxide, the sum of percentage contents of the components is 100 wt%. The teeth orthodontic material has excellent transparent performance, is excellent in mechanical and chemical performances, satisfies sanitary grade, especially is low enough in water absorption rate (or saliva absorption rate) and stress relaxation rate. The invention also relates to preparation of the teeth orthodontic material and an application of the material for preparing a teeth orthodontic device which preferably is dental braces.

The invention discloses a construction method of bridge seamless type expansion joint. The construction method of the bridge seamless type expansion joint includes the steps of embedding a sealing strip in the seam portion of the expansion joint, pouring melted 502 elastic-plastic bodies, placing a cross-seam aluminum sheet well, paving various high molecular polymers which fit in with the American society for testing material (ASTM) standard layer by layer, wherein the various high molecular polymers are mixed materials of the 502 elastic-plastic bodies and granite of a corresponding grade, finally using granitic plaster as a surface wearing layer, and the bridge seamless type expansion joint is achieved. The construction method of the bridge seamless type expansion joint has the advantages of satisfying stretch and displacement of an upper portion structure of the bridge, guaranteeing that cars run stably, improving riding comfort, and being strong in elastic restoring force, capable of resisting the high and low temperature, good in plasticity, extensibility, durability, waterproof performance and adhesion performance, long in service life, convenient to install, flexible in installation, rapid in traffic openness and the like. In addition, the construction method of the bridge seamless type expansion joint further has the advantage that the extensible displacement is from 20mm to 50 mm.

The invention discloses an environment-friendly nonslip ultrathin seal material and a preparation method thereof and solves the problems that the asphalt pavement has water penetration, poor slip resistance, slightly pitted surface and small cracks. A stable durable seal is provided to protect the asphalt pavement, aggregate of an original asphalt pavement can be locked, oil shortage can be repaired, post-construction traffic opening time is short, little influence is caused to transportation, and the material herein has great technical significance and social significance; the preventive maintenance process used herein helps maintain pavement service level and retard maintenance time of extensive and medium repair, and save lifecycle maintenance cost.

The invention relates to a wood asphalt mixture used for paving the side pavement. The wood asphalt mixture is prepared from the following components in parts by weight: 5.0-9.0 parts of base asphalt, 10.0-18.0 parts of coarse woody aggregate, 5.0-15.0 parts of fine woody aggregate, 8.0-15.0 parts of mineral powder and 0.5-1.5 parts of TPS modifier. The invention uses the recycled wood as raw material and the raw material is crushed and pretreated to obtain the aggregate of the mixture; experiments prove that the wood asphalt mixture can meet the demand of the Highway Asphalt Pavement Construction Technical Standard (JTGF40-2004) which is issued by the Ministry of Communications, on the side pavement and non-motorized vehicle roads; and the wood asphalt mixture has the advantages that thewood asphalt mixture has light weight, higher elasticity and recuperative power, heat insulation performance and heat insulation performance, the side pavement paved by the wood asphalt mixture is comfortable to walk, and the wood asphalt mixture can be used in the pavements with low load and a certain demands on the deformability and the walking comfortability such as side pavements and pavements of parks and walking streets.

The invention discloses a self-absorption plastic floor and a manufacturing method thereof. The thickness of the self-absorption plastic floor is 3-5mm; the weight of the self-absorption plastic floor in per square meter is 5.7-9.5 kg; the self-absorption plastic floor comprises a plurality of base material layers; a surface layer is arranged on the top of the base material layer on the top of the self-absorption plastic floor; an elastic slip-proof film is arranged on the bottom of the base material layer on the bottom of the self-absorption plastic floor; a plurality of projections with grooves are arranged on the bottom of the elastic slip-proof film; the heights of the projections are the same; the base material layers contain filling materials; the filling materials are one or more than one of barite powder, quartz sand or silica fume; and the base material layers contain PVC (polyvinyl chloride) and glass fibers. The self-absorption plastic floor is manufactured by preparing the base material layers, compounding the base material layers and gluing the surface layer and the elastic slip-proof film to the base material layers.

The invention discloses a preparation device and method of a composite down-like thermal insulation material. The preparation device comprise a base, wherein a pushing device, a drying rack and a feeding device are arranged on the upper surface of the base, the drying rack is positioned between the pushing device and the feeding device, a movable rack is slidably arranged on the upper surface of the base, and the movable rack is positioned between the pushing device and the drying rack; the pushing device drives the movable rack to move back and forth, an exhaust pipe is driven to rotate backand forth, meanwhile, a heating fan blows hot air to the exhaust pipe, and the exhaust pipe finally blows hot air to the surface of a down-like material, so that the purposes of uniform heating and over-heating prevention are achieved; when the material is transported, workers only need to place the down-like material on a base plate, then move the base plate to a corresponding position, push thepush plate to enable the material to stably move forwards to the drying rack, and toppling does not occur in the whole process; and the elastic recovery capability is high, the bulkiness is good, thecost control is low, and the preparation device is widely applied to the fields of filling and the like.

The invention discloses a bituminous mixture doped with glass aggregates and a preparation method thereof. The invention aims to prepare a mixture having the advantages of excellent deformation performance and thermodynamic performance and high water stability and high-temperature stability, so as to increase the use ratio of the waste glass and protect the environment. The bituminous mixture comprises the following materials in parts by weight: 6.0-10.0 parts of matrix asphalt, 12.0-20.0 parts of coarse glass aggregates, 6.0-18.0 parts of fine glass aggregates, 8.0-16.0 parts of mineral powder and 1.0-1.5 parts of a TPS modifier, wherein the grain sizes of the coarse glass aggregates are more than 4.75mm but less than or equal to 16mm; the grain sizes of the fine glass aggregates are more than 0.6mm but less than or equal to 4.75mm; and limestone mineral powder is used as the mineral powder.

The invention discloses a high-elasticity composite floor. The high-elasticity composite floor comprises a basic layer, a buffering layer is arranged on the basic layer, a connecting layer is arranged on the buffering layer, and a panel layer is arranged on the connecting layer; one side of the basic layer is a plane, and the other side of the basic layer is provided with a plurality of flanges which are evenly distributed; one side of the buffering layer is in the shape of sawteeth, and a plurality of grooves which are evenly distributed are formed in the other side of the buffering layer; the buffering layer is in lap joint with the flanges on the basic layer through the grooves; one side of the connecting layer adheres to the panel layer, the other side of the connecting layer is in the shape of sawteeth, and the sawtooth shape of the connecting layer is in lap joint with the sawtooth shape of one side of the buffering layer. Due to the fact that the composite layers made of different materials are adopted, lap joint and transportation of the composite floor are fast and convenient. Due to the fact that a body of the composite floor is made of special PVC materials, elasticity and high resistance of the composite floor can be remarkably improved, the composite floor has high elasticity recovery performance under impacting of heavy objects, damage to the composite floor is avoided, and the using period of the composite floor is prolonged.

The invention discloses a shock absorption breathable shoe. The shock absorption breathable shoe comprises a shoe sole. The shoe sole comprises an outsole and an insole. The outsole and the insole are both made of an elastic material; spherical lower pits recessed upwards are formed in the lower surface of the outsole, spherical upper pits recessed downwards are formed in the portions, corresponding to the lower pits, of the upper side of the outsole, the paired lower pits and upper pits are communicated through through holes, elastic air bags are arranged in the upper pits, the bottom walls of the elastic air bags are matched with the spherical bottoms of the upper pits and adhere to the upper pits, the lower ends of the elastic air bags are provided with endpoints, the endpoints are provided with one-way valves exhausting air downwards from the elastic air bags, the diameters of the endpoints are larger than that of the through holes, the endpoints are extruded into the lower pits from the through holes from top to bottom, multiple vent holes are distributed on the upper walls of the elastic air bags in an upward uplifting mode, and the insole is covered with a breathable cushion layer. According to the shock absorption breathable shoe, the shock absorption effect can be improved, an exhaust mechanism is perfectly integrated with the elastic shoe sole, a good exhausting effect is kept, and meanwhile machining and manufacturing are convenient.

The invention relates to an anti-aging environment-friendly modified asphalt material and a preparation method thereof. The modified asphalt material is mainly prepared from the following components in parts by mass: 60-70 parts of matrix asphalt, 15-20 parts of rubber powder particles, 5-10 parts of coarse aggregate, 5-10 parts of fine aggregate, 3-6 parts of mineral powder, 3-5 parts of polymer fiber, 1-3 parts of an antioxidant, 1-3 parts of an anti-ultraviolet agent, 0.3-0.5 part of a cross-linking agent and 0.1-0.3 part of a deodorant. According to the anti-aging environment-friendly modified asphalt material and the preparation method thereof, the formula setting is reasonable, the preparation process is simple, the prepared modified asphalt material has excellent anti-aging performance and mechanical performance, large-scale production is easy, all the components in the formula are good in compatibility, and a good synergistic effect is achieved; rubber powder particles are prepared after waste tires are treated, so that the problem of solid waste pollution caused by the waste tires is solved, waste recycling is facilitated; and the asphalt material are more environmentally friendly and economical and has a wide application prospect.

The invention provides a seamless expansion joint filling material sealant and a preparing method and application thereof, and belongs to the field of road building materials and engineering. The seamless expansion joint filling material sealant is prepared from, by mass, 100 parts of 90# asphalt, 1-2 parts of a tackifier, 4-6 parts of SBS, 1-2 parts of a plasticizer, 2-4 parts of a toughening agent P4U, 0.2-0.5 part of a stabilizer and 0.2-0.5 part of a bulking agent. According to the seamless expansion joint filling material sealant and the preparing method and application thereof, by designing the raw materials and proportion of the sealant, the sealant has good viscoelasticity, toughness, rut resistance and resistance to shock-produced deformation, the requirement for adapting to deformation, load and other complicated working conditions in high-temperature and low-temperature environments is met, the problems that existing materials are easily cracked and moved under pushing, andthe adhesion power between the materials and an original pavement structure is insufficient are solved, and the service life of expansion joints is prolonged; moreover, adverse influence on workers during use can be greatly reduced.

The invention provides a human-derived biological tissue material and a dynamic culture cell stimulation method and device. The biological tissue material comprises an in-vitro culture matrix and a plurality of moldable cavities capable of accommodating cells to be cultured. In the culture process, the cells are placed in a moldable cavity to secrete an extracellular matrix (ECM). The dynamic culture method comprises the following steps: placing cells in the moldable cavity, and applying different external forces to the cells at different time points to stimulate the cells to secrete ECM. According to different to-be-implanted parts, mechanical forces in different directions, sizes and angles are selected to stimulate cells, so that the cells secrete more ECM and play a shaping role, and a composite biological material of'biological material + shaping cell + ECM 'is formed. The composite biological material becomes an organic integrated body through mechanical stimulation, so that the use of a chemical cross-linking agent is avoided. Cell components (immune components) in the composite material can be removed. The obtained biological tissue materials comprise blood vessels, hernia patches, tendons, cartilages, muscles and the like.

The invention relates to the technical field of textiles, in particular to a production method of special powder puff flannelette. Polyester filament yarns serve as raw materials and are woven by a double-rapier loom in a W-shaped consolidation manner, and a fabric is finished to obtain the special powder puff flannelette. The special powder puff flannelette has the advantages of bacteria resistance, high fluff elasticity reset capacity, good abrasion resistance, low cost and like, fluff cannot fall, and the stability of the fluff is better. According to the method, by the aid of the double-rapier loom, polyester filament yarns with denier count of 1-3 serve as raw materials to be woven and finished to obtain the flannelette, the fluff of the surfaces of the flannelette are full and vertical, the surfaces of the flannelette have natural comfort after the flannelette is finished by the method, and loose powder can be uniformly dispersed on the face of a user. A structure of a flannelette cutting knife is designed, the flannelette cutting efficiency of the production method of the special powder puff flannelette is improved, damage of the flannelette cutting knife to knitting wool can be prevented, flannelette cutting effect is better, and the method is particularly applicable to weaving of flannelettes taking the polyester filament yarns as the raw materials.

The invention relates to modified asphalt and asphalt concrete. The modified asphalt is prepared from the following raw materials of: in parts by weight, 95-105 parts of asphalt, 2-9 parts of polypropylene, 1-5 parts of SBS, 0.5-2.5 parts of petroleum resin, 0.5-2.5 parts of dimethyl phthalate, 1-5 parts of flame retardant, 0.1-0.5 part of a cross-linking agent and 0.1-0.5 part of sulphur. The modified asphalt has strong elasticity restorability and large viscosity and toughness, and the asphalt concrete contains the modified asphalt, has strong reflection crack resistance, and can significantly improve the service life of highway pavements, especially pavements of asphalt-laid cement roads.

The invention discloses a waterproof elastic sealing gasket for a segment joint of a shield tunnel. The waterproof elastic sealing gasket is characterized in that the waterproof elastic sealing gasketcomprises a silicon foam inner core and an ethylene-propylene-diene monomer (EPDM) rubber outer tire wrapping the silicon foam inner core. During using, two pieces of elastic sealing gaskets are pasted in waterproof inserting grooves in two adjacent segments in a mirror symmetry mode correspondingly, and the sealing gaskets are extruded after the segments are spliced, so that the silicon foam inner cores contracts and produce contact stress, thus EPDM rubber is mutually fitted and extruded, and a waterproof sealing function is achieved accordingly. Compared with a single-component EPDM through hole rubber sealing gasket commonly used in the existing engineering technology field, the waterproof sealing gasket with the additionally-arranged silicon foam inner core has the advantages of uniform contact stress, close fitting, long-term load maintaining ability, high elasticity recovery ability and the like, the stress relaxation phenomenon of the waterproof sealing gasket under the long-term pressure can be effectively reduced. The waterproof elastic sealing gasket has great value for long-term waterproof performance of the shield tunnel.

The invention discloses a water-stop sealing gasket capable of being melted and injected with glue for multiple times, a duct piece, a duct piece ring and a construction method. The sealing gasket capable of being injected with glue comprises a rubber main body, wherein a glue injection hole channel is formed in the rubber main body, a hot melting coil is arranged in the glue injection hole channel, reserved hole channels capable of ensuring that the rubber main body is compressible are reserved in the two sides of the glue injection hole channel, and an expansion water absorption layer is arranged on an outer ring of the rubber main body; and the rubber main body is also provided with a glue outlet hole communicated with the glue injection hole channel. The water-stop sealing gasket capable of being injected with glue is arranged on an inner layer of an annular and longitudinal joint surface of a segment, and a common sealing gasket is normally arranged on an outer layer of the jointsurface. After a segment tunnel operates, if water leakage occurs due to the fact that the water stopping performance of the outer-layer sealing gasket is reduced, an inner-layer sealing gasket glue injection and water stopping program is started. High-temperature water stop glue is injected into a sealing gasket channel and seeps outwards along the glue outlet hole, and when the temperature is reduced to 45 DEG C or below, the liquid glue becomes solid rubber, and the water stop effect is achieved.

The invention discloses stress-compensation waterproof elastic sealing gaskets for a shield tunnel segment joint. Each waterproof elastic sealing gasket comprises a sealing gasket main body, and is characterized in that each sealing gasket main body is an ethylene-propylene-diene monomer waterproof body, each ethylene-propylene-diene monomer waterproof body is internally provided with a pluralityof holes, and the holes are filled with CM sponge filling bodies. Before shield segments are spliced, the elastic sealing gaskets are pasted into segment waterproof embedding grooves. After the segments are spliced, the two adjacent elastic gaskets mutually extrude each other to cause compression deformation of the gaskets. The ethylene-propylene- diene monomer waterproof bodies can generate contact stress after being compressed and deformed, the two adjacent sealing gaskets are mutually attached and the sealing gaskets and the concrete are mutually attached so as to produce a waterproof sealing effect; and the CM sponge filling bodies generate internal expansion force to the ethylene-propylene- diene monomer waterproof bodies after being compressed and deformed, and the stress relaxationof the ethylene-propylene- diene monomer waterproof bodies under long-term pressure is compensated to ensure the long-term waterproof performance of the elastic sealing gaskets.

The invention discloses a water-tight gasket capable of multiple melting and injection of glue, a segment, a segment ring and a construction method. The gasket that can be injected with glue includes a rubber main body, and a channel for injecting glue is arranged in the rubber main body. A hot-melt coil is provided inside the injection channel, and reserved channels are reserved on both sides of the injection channel to ensure that the rubber body can be compressed, and an expansion water-absorbing layer is arranged on the outer ring of the rubber body; There is a glue outlet connected with the glue injection channel. The glue-injectable water-tight sealing gasket is set on the inner layer of the circumferential and longitudinal joint surfaces of the segment, and the ordinary sealing gasket is normally installed on the outer layer of the joint surface. After the segment tunnel is in operation, if there is water leakage due to the decline in the water-stop performance of the outer gasket, start the glue injection water-stop procedure for the inner gasket. The high-temperature water-stopping glue is injected into the gasket channel and seeps outward along the glue outlet hole. When the temperature drops below 45°C, the liquid glue becomes solid rubber and exerts the water-stopping effect.

The invention discloses a material capsule with a dynamic combined material pipe. The material capsule comprises a capsule body, a material opening is formed in the top end of the capsule body, a fixing frame is further arranged at the position of the material opening, a mounting hole is formed in the center of the fixing frame, a main material pipe is arranged at the position of the mounting hole, at least two connecting holes are further formed in the fixing frame, and sleeves are further fixedly installed in the connecting holes. The sleeves are similar to the main material pipe in structure, each sleeve comprises a lining pipe and an external pipe and is connected and provided with a material pipe through a rubber hose, the material pipe comprises an inner pipe and an outer pipe, the top of the inner pipe is higher than the top of the outer pipe, the bottom of the inner pipe is higher than the bottom of the outer pipe, and an auxiliary moving device used for dynamic self-moving quick discharging of the combined material pipe is further arranged on the material pipe. Through cooperation of the combined distribution material pipe and the auxiliary moving device which are arranged in the capsule body, the effect that sucked materials automatically move to be close to the middle is achieved under rubber elastic recovery and external force action, and the use value of the material capsule and the cleanliness degree of the sucked materials are improved.

The invention discloses an angle-foldable PVC rigid-flexible composite board and a preparation method thereof. The composite board comprises a rigid layer, a flexible layer and a facing layer, whereinan external corner groove and an internal corner groove are formed in the rigid layer, and the rigid layer is prepared from PVC resin, a calcium-zinc composite stabilizer, stearic acid, polyethylenewax, polyacrylate, chlorinated polyethylene, bamboo wood powder, calcium carbonate stone powder, azodicarbonamide, an antibacterial filler and sodium iodide; and the flexible layer is prepared from the following raw materials: PVC resin, a PVC softening agent, a calcium-zinc composite stabilizer, stearic acid, polyethylene wax, calcium carbonate stone powder, azodicarbonamide, an antibacterial filler and sodium iodide. According to the invention, a rigid-flexible composite structure is adopted, so good impact resistance is achieved; internal and external corners can be bent along the internaland external corner grooves and can be seamlessly spliced; the antibacterial filler is added, so the mechanical property of the board is improved, and the board is waterproof and mildew-proof; the rigid layer, the flexible layer and the facing layer are subjected to hot-pressing composite molding together, process is simple, the use of glue is avoided, and energy conservation and environmental protection are better achieved.

The invention relates to a two-component odor-removing hollow glass silicone sealing glue, which is prepared by mixing a component A and a component B. In the prior art, auxiliary agents such as KH550, KH560, KH602 and KH792 and a glue are mixed so as to be used. According to the present invention, the technology is different from the prior art, and comprises: carrying out mixing cross-linking onthe four components such as KH550, KH560, KH602 and KH792 so as to completely perform cross-linking, and dibutyltin dilaurate is added to the component B, such that the product of the present invention has advantages of good odor removing effect and strong bonding strength, wherein the detection results show that the content of methanol, ethanol and other small molecule alcohol substances is about1%, and the bonding strength can achieve 0.86 MPa while the film plating glass bonding strength of the existing ketoxime type silicone glue is only 0.46 MPa; and the two-component odor-removing hollow glass silicone sealing glue is economical, environmentally friendly, safe and effective, and is suitable for promotion, production and use.

The invention discloses multifunctional modified asphalt and a preparation method thereof, and belongs to the technical field of road engineering materials. According to the multifunctional modified asphalt prepared by the method disclosed by the invention, the dynamic viscosity at 60 DEG C is greater than 20000 Pa*s, the adhesion with stones at high temperature is strong, and the mixing at 130 DEG C can be achieved. The multifunctional modified asphalt has the advantages of high softening point, high ductility, high elastic recovery capacity, high toughness, aging resistance and the like, andhas the excellent properties that the elastic recovery rate is higher than 95% and the like. According to the method, only a shearing process is needed, and relatively high-viscosity, high-viscosityand high-elasticity modified asphalt needs complex processes such as development and maintenance, so that the purpose of saving the cost is achieved, the production is simple, and manpower idle work and equipment loss are greatly reduced. The multifunctional modified asphalt can be applied to laying of drainage pavements, bridge waterproof bonding stress absorption layers, fine surfacing, ultrathin wearing layers, airport pavements and the like.

The spinning-bonding process of producing non-woven Jinlun cloth with polyamide as material includes drying material, extruding fusion, filtering, spinning, cooling, drafting yarn separating to spread net, hot rolling and winding. The non-woven Jinlun cloth product of the present invention has soft hand feeling, high strength, good wear resistant performance, high resilience, and strong fatigue resistance and thus wide use.

The invention provides a seamless expansion joint filling material sealant and a preparing method and application thereof, and belongs to the field of road building materials and engineering. The seamless expansion joint filling material sealant is prepared from, by mass, 100 parts of 90# asphalt, 1-2 parts of a tackifier, 4-6 parts of SBS, 1-2 parts of a plasticizer, 2-4 parts of a toughening agent P4U, 0.2-0.5 part of a stabilizer and 0.2-0.5 part of a bulking agent. According to the seamless expansion joint filling material sealant and the preparing method and application thereof, by designing the raw materials and proportion of the sealant, the sealant has good viscoelasticity, toughness, rut resistance and resistance to shock-produced deformation, the requirement for adapting to deformation, load and other complicated working conditions in high-temperature and low-temperature environments is met, the problems that existing materials are easily cracked and moved under pushing, andthe adhesion power between the materials and an original pavement structure is insufficient are solved, and the service life of expansion joints is prolonged; moreover, adverse influence on workers during use can be greatly reduced.