81results about How to "Reinforcing effect" patented technology

The invention discloses an automatic slurry filling device for a concrete crack defect with high adhesion strength, which comprises a slurry filling pipe, wherein the concrete slurry is injected intothe concrete crack through the slurry filling pipe; and also comprises a machine frame, an electric sliding element, an electric lifting element, a rubber sleeve, a trowel, a first supporting rod, a first sucking disc, a second supporting rod and a abutted element; the electric sliding element is in sliding fit with the machine frame, the electric lifting element is arranged on the electric sliding element, the lifting end of the electric lifting element is connected with the slurry filling pipe, and the trowel is sleeved at the periphery of the slurry filling pipe through the rubber sleeve. The first sucking disc is arranged on the end part of the first supporting rod; the connecting end of the abutted element is slidably mounted on the end part of the second supporting rod, and the abutted end of the abutted element can be contacted with the trowel. The device has the advantages that the crack can be fully filled, the slurry leakage condition is reduced, the flatness of the surface after filling the slurry is high, the slurry filling pipe can achieve sliding and grouting in the crack, and the installation stability of a bracket is high, no damage is caused on a wall body or the adhesion strength of a plate body is high.

The invention discloses a raw material composition of modified polyurethane material, and a preparation method and application thereof. The raw material composition comprises a component A and a component B, wherein A and B do not exist in the same component; the component A comprises 19-39% of polyoxypropylene polyalcohol, 60-80% of epoxyethane modified silicone polymer and 1% of metal catalyst; and the component B comprises 9.99999-19.99999% of polyether glycol, 80-90% of polyisocyanate and 0.00001% of storage stabilizer. The preparation method comprises the following steps: component A: mixing the polyether glycol, modifier and catalyst, stirring at 15-40 DEG C for 3-4 hours at the rate of 100-120 rpm; and component B: heating the polyether glycol to 80-100 DEG C, stirring, dehydrating and degassing in vacuum until the water content is less than 0.05%, cooling to 10-40 DEG C, adding the polyisocyanate, reacting at 80-85 DEG C for 2-3 hours, cooling to 10-40 DEG C, adding the storage stabilizer, and uniformly stirring. The raw material composition has the advantages of low reaction temperature, incombustibility, high reaction speed, favorable flowability and the like.

The invention relates to the technical field of seal rings, and particularly discloses a modified nano composite silicon rubber seal ring which comprises unvulcanized compounded rubber and a vulcanizing agent in a weight ratio of 100:(0.5-10). The unvulcanized compounded rubber comprises the following components in parts by weight: 70-100 parts of methylvinyl silicone rubber, 1-20 parts of plasticizer, 0.01-10 parts of modified nano additive, 10-50 parts of reinforcing filler and 0.5-5 parts of coupling agent. The modified nano additive is one of modified white graphene, modified graphene and graphene oxide. Small amounts of nano modified particles added into the composite silicon rubber seal ring are beneficial to increasing the sealing property and mechanical strength, but other properties are not influenced. The preparation method effectively improves the problems of water vapor, gas permeability degradation and mechanical property degradation caused by aging of the silicon rubber seal ring in the long-term use process, greatly prolongs the service life of the seal material, and has high application value.

The invention discloses modified butadiene rubber which is characterized by being prepared from the following raw materials in parts by mole: 0.8 to 2.0 parts of a polar group-containing compound, 40to 80 parts of a solvent A, 1.0 to 2.0 parts of a Lewis alkali, 0.8 to 2.5 parts of epoxy myrcene, 5 to 20 parts of a solvent B, 5.5 to 30 parts of a protective agent, 100 parts of 1,3-butadiene, 3 to15 parts of an activating agent, 0.0005 to 0.004 part of an electron donor and 0.00025 to 0.001 part of a nickel compound. The invention also discloses a composite material adopting the modified butadiene rubber and a preparation method of the composite material. Compared with the prior art, the modified butadiene rubber is modified from the source and has excellent compatibility with a filler.

The invention discloses a conveniently-used fishing net for fish breeding. The conveniently-used fishing net comprises a fishing net main body, a telescopic rod and a catching net; the top of the fishing net main body is fixedly connected with the telescopic rod; the middle part inside the telescopic rod is movably connected with a telescopic inner rod; the top end of the fishing net main body ismovably connected with an adjustable reinforcing rod; the middle part of the adjustable reinforcing rod passes through and is connected with an adjuster; the top inside the adjuster is fixedly connected with a gear; the middle part of the gear is fixedly connected with a bearing; the middle part at one side of the fishing net main body is movably connected with detachable connecting rods; the detachable connecting rods can avoid the phenomenon that slip is caused due to sweat or water on a hand of an operator during working, so that the novelty and safety performance of the conveniently-used fishing net for fish breeding are embodied; and due to the adoption of the adjuster, more fishes can be fished, and the working time of the operator is shortened. The conveniently-used fishing net forfish breeding is suitable for fish breeding and has a wide development prospect in the future.

The invention discloses a cavity wall reinforcement structure and a method for constructing the same. The cavity wall reinforcement structure comprises cavity walls, angle steel, a plurality of steel plate strips, short steel plates, long steel plate strips, split bolts and chemical anchor bolts. The multiple corresponding vertical perpendicular steel plate strips are respectively arranged on wall surfaces on two sides of each cavity wall, and the corresponding transverse horizontal angle steel is arranged at the upper ends of the wall surfaces of the two sides of each cavity wall; the steel plate strips and the angle steel are adhered with the cavity walls by structural adhesive and are anchored by the split bolts; a branch of the angle steel is flush with the upper surface of the corresponding cavity wall, another branch of the angle steel is butted to the corresponding steel plate strips in a flush manner, and the short steel plates are adhered on butt joints of the angle steel and the steel plate strips and are anchored by the split bolts; the bottom surfaces of the cavity walls are adhered with the ground by structural adhesive, and the long steel plate strips for preventing the steel plate strips from outwardly moving are arranged on the outer sides of the tail ends of the lower portions of the steel plate strips, and are anchored with the ground by the chemical anchor bolts. The cavity wall reinforcement structure and the method have the advantages of applicability to sold walls with or without ring beams and applicability to cavity walls.

The invention discloses a low-gloss high-rigidity high-impact polypropylene composite material for automobile hard plastic instrument panels and a preparation method of the composite material. The polypropylene composite material is prepared from the following raw materials in percentage by weight: 33-90 parts of polypropylene, 0-25 parts of ultrafine inorganic filler, 5-20 parts of a flexibilizer, 1-15 parts of fully vulcanized powder rubber, 0.5-3 parts of a compatilizer, 0.1-1 part of an antioxidant, 0.1-1 part of a light stabilizer and 0-2 parts of other auxiliaries. According to the invention, the nano-scale fully vulcanized powder rubber is introduced into a polypropylene composite material system, and the reinforcing effect of the fully vulcanized powdery rubber to toughening agentelastomers is utilized, so that the toughened polypropylene composite material is synergistically reinforced; meanwhile, the nano-scale fully vulcanized powder rubber and the superfine inorganic filler can form a core-shell structure in a polypropylene matrix, so that the obtained composite material has relatively high toughness and also has relatively high strength and rigidity at the same time.Meanwhile, the fully vulcanized powder rubber can reduce gloss of the composite material system, so that a matt effect is achieved.

The invention relates to an anti-freezing concrete and a preparation method thereof, and belongs to the technical field of concrete preparation. Wheat bran is used as a raw material; ammonium sulfateprecipitate is extracted by adopting a phosphate buffer salt solution to prepare antifreeze protein, the prepared antifreeze protein and silicone rubber are compounded to prepare composite fibers by adopting electrostatic spinning, and the composite fibers are taken as a filler of the high-strength antifreeze concrete so as to prepare the high-strength antifreeze concrete with light weight, good elasticity, toughness, durability and shock absorption performance. The prepared anti-freezing concrete has an excellent compression resistant and anti-freezing performance, under the condition that the compression resistance of the concrete is not changed, the larger the mass loss rate is, the poorer the anti-freezing performance is, and otherwise, the better the anti-freezing performance is.

The invention relates to a low pile gravity type wharf suitable for a soft soil foundation and a construction method of the low pile gravity type wharf, and belongs to the field of wharfs, which solves the problems that an existing gravity type wharf is influenced by foundation soil properties, large post-construction settlement exists commonly, and the construction period is long. The low pile gravity type wharf includes a plurality of rigid foundation piles, a reinforced concrete structure base plate, a plain concrete wall body and a reinforced concrete copping, wherein the structure foundation of the low pile gravity type wharf adopts the rigid foundation piles, the bottoms of the rigid foundation piles enter a hard soil layer, a broken stone cushion layer and a plain concrete cushion layer are sequentially paved on the upper parts of the rigid foundation piles, the reinforced concrete structure base plate is casted on the tops of the rigid foundation piles, the reinforced concretecopping is arranged on the top surface of the plain concrete wall body, and a riprap refilling structure layer, an inverted filtering layer, a geotechnical cloth and a dang residue layer are sequentially arranged on the rear of the plain concrete wall body from the top to the bottom. According to the low pile gravity wharf and the construction method, properties of the rigid foundation piles are used, settlement and horizontal displacement can be effectively controlled, the reinforcing effect of whole stability on the wharf is also achieved, and the construction period of the wharf is effectively shortened.

A technology for making the nano-calcium carbonate contained latex gloves includes such steps as proportionally dispersing the calcium carbonate nanoparticles and other raw materials in the natural latex, conventional dipping to form gloves, turning over, chlorinating, immersing, rinsing and drying. It has high tear strength and risistance to the penetration of virus.

The invention discloses a method for preparing polyetheretherketone-diatomaceous earth composite materials, and belongs to the technical field of high-polymer materials. The method includes mixing alloy powder with a low melting point, crystal whiskers, starch, glycerin and water with one another, carrying out ball milling on the alloy powder, the crystal whiskers, the starch, the glycerin and thewater and carrying out sieving to obtain mixed slurry; stirring and mixing diatomaceous earth and acid with each other, and carrying out filtering, washing and drying to obtain primarily treated diatomaceous earth; mixing and stirring the primarily treated diatomaceous earth and dopamine solution with each other and carrying out filtering and drying to obtain secondarily treated diatomaceous earth; mixing the secondarily treated diatomaceous earth and the mixed slurry with each other, carrying out ball milling on the secondarily treated diatomaceous earth and the mixed slurry and carrying outreduced-pressure concentration and drying to obtain modified diatomaceous earth; carrying out banburying on polyetheretherketone powder at first, then adding the modified diatomaceous earth, plasticizers and vulcanizing agents into the polyetheretherketone powder, mixing the modified diatomaceous earth, the plasticizers, the vulcanizing agents and the polyetheretherketone powder with one anotherand carrying out extrusion molding to obtain the polyetheretherketone-diatomaceous earth composite materials. The method has the advantage that the polyetheretherketone-diatomaceous earth composite materials prepared by the aid of the method are excellent in mechanical property.

The invention discloses a humid environment earthen site slump damage reinforcement and protection method. According to the method, bamboo fiber rods are adopted as core materials, geotextile serves as a drainage structural layer, and the appropriate draining function and the appropriate reinforcement function are integrated to control underground earthen site slump damage. By means of the method, the well cementing process is omitted, and disturbance of the well cementing process on earthen site soil mass and secondary damage caused by grouting can be avoided; the construction process is simple, flexible drainage bamboo fiber rods can be directly pressed into the earthen site soil mass through artificial static force, the strength of the earthen site soil mass and the tension resistance of natural bamboo wood are combined, and the stability of the earthen site soil mass is integrally and moderately improved; the defects of large disturbance, serious pollution, irreversibility, poor deformation compatibility suitability through a traditional anchoring technology can be effectively overcome.

The invention discloses a building ground surface settlement repair method. The method is characterized by comprising the following steps that S1, a road breaker is used for breaking the portion, where settlement occurs, of the building ground surface, original filler of the settlement portion is removed, then the concrete surface on the inner side wall of a foundation pit formed when the settlement portion is broken is cleaned, grinding is performed when necessary, and repair should be performed in advance if honeycombs or holes exist; and S2, after the inner side of the foundation pit is cleaned, surveying and setting out are performed. Through pile foundations, spurs, connecting shafts, a division wall, automatic repair bags, a metal binding wire net and clamp nuts which are designed, the problems that an existing building ground surface settlement repair method is mostly a layer-to-layer overlay filling method, a flaking phenomenon is prone to occurring between layers, the stability after the building ground surface repair is severely affected, in addition, the water proof performance is poor, automatic repair fails when an internal waterproof structure is damaged, and the service life of the building ground surface which is repaired is severely shortened are solved.