30results about How to "Self leveling" patented technology

The invention discloses a transparent high-strength self-leveling methanol-removed single-component organic silica gel which is composed of the following raw materials in parts by weight: 100 parts of alkoxy-terminated polydimethylsiloxane, 0-30 parts of plasticizer, 10-17 parts of crosslinking agent, 3-7 parts of coupling agent, 10-20 parts of reinforcing filler, 0.5-2 parts of catalyst and 3-9 parts of hydroxy remover. The preparation method of the organic silica gel comprises the following steps: 1) adding the alkoxy-terminated polydimethylsiloxane, reinforcing filler, plasticizer and hydroxy remover into a planet stirrer, and stirring and mixing in a vacuum; 2) adding the crosslinking agent into the mixture obtained in the step (1), and dispersing and stirring in a vacuum; and 3) adding the coupling agent and catalyst, and dispersing and stirring in a vacuum. The organic silica gel product is neutral-curing, has the advantages of favorable yellowing resistance, no corrosivity to the substrate, high storage stability, excellent transparency and higher strength, and can implement self-leveling to satisfy the diversified demands of industrial gels.

The invention provides an electric appliance with self-leveled ground feet and a leveling method. At least one of a plurality of ground feet which are arranged at the bottom of the electric appliance is a self-leveled ground foot; the self-leveled ground foot comprises a bracket, a worm rod, a worm wheel and an adjusting support rod; a driving device is adopted to drive the worm rod of the self-leveled ground foot to rotate; a clutch with adjustable friction is arranged between the driving device and the worm rod; the driving device is arranged inside an electric appliance casing; the worm rod and the worm wheel are rotationally mounted on the bracket; the worm rod and the worm wheel are matched to drive the worm wheel to rotate; an adjusting support rod is arranged inside a hole in the bracket in a penetration manner; teeth are arranged on the adjusting support rod and are meshed with teeth of the worm wheel; the worm wheel is matched with the adjusting support rod to drive the upright adjusting support rod to move upwards or downwards; the driving device is electrically connected with a controller of the electric appliance. The clutch is driven by the driving device, furthermore the worm rod of the self-leveled ground foot is driven to act till the friction piece of the clutch slides off, then automatic leveling can be achieved, the operation is simple and convenient, the time and the labor can be saved, the leveling precision is high, and the user experience can be improved.

The invention discloses a gel material for ultra-fine tailing filling and dry heaping.The gel material is prepared from, by mass, 70-90% of blast furnace water granulated slag fine powder, 3-15% of an activating agent, 0.5-0.8% of an activation promoter, 0.3-0.6% of coagulant, 0.1-0.3% of a pumping aid and 5-15% of a reinforcing agent through the steps of matching, mixing and grinding.The activating agent is a mixed compound composed of quick lime, sodium aluminate and sodium orthosilicate.The activation promoter is sodium fluoride.The coagulant is a mixed compound of sodium thiocyanate and anhydrous calcium chloride.The pumping aid is non-ionic surfactant.The reinforcing agent is a mixed compound composed of gypsum, semi-hydrated gypsum, calcined gypsum and aluminum sulfate.The gel material solves the problem that ultra-fine and fine-particle tailing and tailing slurry are difficult to cure and low in strength after curing, and the gel material is low in cost and easy to construct, and has the double characteristics of high early strength and high later strength.

The invention discloses a textile winding device with automatic leveling and cleaning functions, which comprises a support platform and a top plate, both sides of the top of the support platform are fixedly connected with support frames, and the tops of the two support frames are respectively connected to the two sides of the bottom of the top plate Fixed connection, the top of the top plate is fixedly connected with five return springs, the tops of the five return springs are fixedly connected with buffer seats, and the tops of the five buffer seats are fixedly connected with the bottom of the buffer table, the top of the buffer table, etc. There are five buffer columns fixedly connected at a distance, and brushes are fixedly connected to the tops of the five buffer columns. The textile winding device with automatic leveling and cleaning functions, by setting the cloth guide roller and the cloth take-up roller, the user can put the textile to be wound on the cloth guide roller, when the cloth guide roller and the cloth take-up roller rotate The textile will be rewinded. During the rewinding process, the outer surface of the textile can be automatically cleaned through the combined use of the buffer table, buffer column and brush.

The invention belongs to the technical field of epoxy resin films, and particularly relates to an epoxy resin, film which is prepared from the following raw materials in parts by weight: 40-60 parts of E44 epoxy resin, 30-50 parts of hydrogenated butadiene-acrylonitrile rubber, 3-5 parts of inorganic mixed filler, 6-10 parts of phospholipid molecule solution, 2.5-5 parts of curing agent and 6.5-7-10 parts of polyvinyl chloride paste resin. The preparation method includes following steps: adding a mixture of E44 epoxy resin, hydrogenated butadiene-acrylonitrile rubber, a curing agent and polyvinyl chloride paste resin into an acetone solution to obtain a blended solution; and adding a phospholipid molecule solution and an inorganic mixed filler into the blended solution to obtain a uniformly dispersed solution. A roller rotates back and forth to drive the two ends of the flattening tank body to move upwards and sink intermittently through the pull ropes, and then an epoxy resin solutioncan be uniformly and efficiently spread in the flattening tank body to reach a self-leveling state; a vibration exciter is arranged at the bottom of the flattening tank body, wherein the vibration exciter enables the bottom of the flattening tank body to be in a vibration state, so that the epoxy resin solution is more uniformly spread.

The invention relates to a two-component low-toxicity flame-retardant epoxy-based joint mixture and relates to coatings for ship gutterways. The two-component low-toxicity flame-retardant epoxy-based joint mixture comprises a component A and a component B which are mixed in a weight ratio of 2 to 1, wherein the component A comprises, by weight, 100 parts of phosphorized epoxy resin, 40-60 parts of hydroxide, 40-60 parts of acid zinc compound, 3-5 parts of organosilicon coupling agent, 1-2 parts of highly-wear-resistant carbon black and 10-20 parts of precipitated white carbon; the component B comprises, by weight, 40-50 parts of epoxy-amine curing agent and 8-10 parts of DMP-30; the hydroxide is selected from one of aluminum hydroxide and magnesium hydroxide, and the acid zinc compound is one of zinc borate and zinc stannate. The two-component low-toxicity flame-retardant epoxy-based joint mixture is capable of meeting the performance requirements on joint mixtures for the ship gutterways and has the comprehensive advantages of low toxicity, flame retardance, resistance to seawater corrosion and self-leveling.

The invention relates to the technical field of buildings, and discloses a rapid maintaining method for a cement road surface. According to the created rapid maintaining method, the steps of milling,slag removing, brushing, wetting, new cement gel pouring, spreading of a new repair agent and plastic thin film maintenance are conducted sequentially, in this way, the quantity of demanded consumables can be decreased, construction method steps can be simplified, time needed for maintenance can be further shortened greatly, accordingly, the task of maintenance can be rapidly completed, the aim ofrapidly restoring traffic is realized, and travel of people and development of national economy activities are convenient greatly. In addition, the adopted cement gel and the repair agent have the advantages of having self leveling, being high in strength, realizing fast forming and resisting to freezing, permeation and abrasion, and the rapid maintaining method is convenient to apply and popularize actually.

The invention discloses a method for backfilling light foam concrete in an urban abandoned underground space in a soft soil area. The method comprises the following steps that (1) according to the surrounding environment and building conditions of the urban abandoned underground space to be backfilled, a water pumping-backfilling monitoring scheme is formulated, and horizontal displacement and settlement monitoring points are arranged; (2) accumulated water in a project is slowly pumped and drained, internal sundries are cleared, and an internal structure stress and strain monitoring device and a temperature and stress monitoring instrument for the light foam concrete in the backfilling process are arranged; (3) the density rho of the light foam concrete for backfilling is converted through an equivalent load method rho whw = rho h, and light foam concrete with the density grade is prepared; (4) according to a layering and blocking backfilling principle, the waste underground space are divided into layers and blocks, the light foam concrete is sequentially pumped from the interior of a project to an opening for backfilling in a layered and blocked mode, samples are reserved to test the physical and mechanical properties of light foam concrete samples in each backfilling stage until the space is densely backfilled; and (5) the backfilling effect is checked by adopting a coring and geophysical prospecting method.

The invention discloses a concrete for airport pavement repair and a preparation method thereof. The concrete is characterized by comprising, by weight, 15.0-30.0% of Portland cement, 10.0-20.0% of sulphoaluminate cement, 1-3% of multi walled carbon fiber, 1.8-3.0% of nanometer aluminum powder, 0.5-1.15% of an the active dispersant, 0.2-0.3% of a retarder, 25-55% of quartz sand and 10.0-20.0% of natural zeolite powder. The concrete provided by the invention can repair the airport pavement.

The invention provides a device and method for driving a pre-stressed anchor rod in a tunnel with water-rich, soft and broken surrounding rocks, and belongs to the field of tunnel engineering machinery. The device for driving the pre-stressed anchor rod in the tunnel with water-rich, soft and broken surrounding rocks includes a locking mechanism and a driving mechanism; the locking mechanism includes a mounting seat, a screw rod, a nut, a locking rod and a through hole; the nut is connected on the screw rod in a threaded transmission manner; the nut is fixed at one end of the locking rod; thelocking rod slides in the through hole; the through hole is formed in the outer wall of the mounting seat; the driving mechanism includes a first bevel gear, a second bevel gear and a rotating shaft,the first bevel gear is fixed at one end of the screw rod, the second bevel gear is in transmission connection with the first bevel gear, the second bevel gear is fixed on the rotating shaft, and therotating shaft passes through the mounting seat, so that the locking of the anchor rod in the radial position is realized; and therefore, the bearing capacity of the anchor rod in the tunnel to transverse shear and bending forces can be greatly improved, the service life of the anchor rod is prolonged, and the firmness of the tunnel is strengthened.

The invention discloses a preparation method of a special pre-curing adhesive for SMC (Sheet Molding Compound), the preparation method of the special pre-curing adhesive for SMC is used for preparing the special pre-curing adhesive for adhering SMC to a defect part of an oil and gas pipeline, and the preparation method of the pre-curing adhesive comprises the following steps: mixing epoxy resin with 3, 3 '-difluoro-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4- The preparation method comprises the following steps: blending 2, 4-epoxy cyclohexyl methacrylate and acrylate, and uniformly stirring to prepare compound resin; acrylic monomers and auxiliaries are added into the compound resin, and modified compound resin is prepared after high-temperature, stirring and ultraviolet light treatment; the modified compound resin and a compound curing agent are blended and stirred, and the special pre-curing adhesive for SMC is prepared after uniform stirring and standing, and is used for repairing long-distance oil and gas pipelines. The technical problems that in the prior art, adhesives in other fields are used for repairing the oil and gas conveying pipeline, the repairing effect of the oil and gas conveying pipeline is poor due to the performance of the adhesives, and the overall reinforcing strength of a repairing layer is low are solved.

Black steel fiber reinforced concrete which can be rapidly solidified, has high strength and good durability, and is not easy to crack and damage is provided by the invention. The black steel fiber reinforced concrete is prepared from the following raw materials in percentage by weight: 20%-30% of sulphoaluminate cement, 30%-40% of aggregate, 30%-40% of quartz sand, 1%-2% of steel fibers, 0.1%-0.3% of PP fibers, 0.2%-0.5% of carbon black, 0.1%-0.3% of a retarder, 0.5%-1% of an expanding agent, 0.2%-0.5% of an air entraining agent, 0.08%-0.12% of a water reducing agent and 0.5%-1% of a coagulant.

The invention relates to a composite buffering anti-collision guardrail based on construction waste reutilization, the composite buffering anti-collision guardrail comprises a regenerated buffering energy-absorbing material and a steel shell, the regenerated buffering energy-absorbing material is prepared by taking construction waste as a raw material, and the steel shell is filled with the regenerated buffering energy-absorbing material to form a composite structure. The buffering performance of the anti-collision guardrail is improved, meanwhile, construction waste is recycled, the problems that resource utilization of the construction waste is difficult, and the buffering function and the blocking function of an existing anti-collision guardrail are mutually restricted are solved, and the composite buffering anti-collision guardrail has the advantages of being light in weight, good in guidance quality, low in manufacturing cost, convenient to install, construct and replace and the like. The composite buffering anti-collision guardrail is beneficial to reduction of personnel injury caused by collision accidents and guarantee of public safety, expands the field of resource utilization of the construction waste, provides a new idea for resource utilization of the construction waste, and has great social, environmental and economic benefits and wide application and popularization prospects.