18 results about "Rubber cement" patented technology

The invention relates to the technical field of recycled asphalt, in particular to a high-consumption RAP fine aggregate recycled asphalt mixture and a preparation method thereof.The high-consumption RAP fine aggregate recycled asphalt mixture is prepared from, by weight, 30-50 parts of RAP fine aggregate, 10-30 parts of RAP coarse aggregate, 25-30 parts of new coarse aggregate, 4-5.2 parts of matrix asphalt, 3-5 parts of cold additive recycled rubber cement, 3-5 parts of mineral powder and 0.2-0.26 part of warm mixing agent. When the total doping amount of the RAP is 60%, the proportion of the fine materials in the total RAP is larger than or equal to 50%, the fine materials can be stably doped, the discarding rate and energy consumption of the fine materials are remarkably reduced, and the RAP fine materials can be consumed in a high proportion.

The invention provides room-temperature vulcanized rubber cement for a static balance patch of an aircraft tire and a preparation method of the room-temperature vulcanized rubber cement, and the room-temperature vulcanized rubber cement is prepared by taking natural rubber as a main material and C5 petroleum resin, an anti-aging agent BLE-W, an anti-aging agent RD, an anti-aging agent 4020, an anti-reversion agent HVA-2, precipitated white carbon black, a silane coupling agent, high-wear-resistance carbon black, a diethyl dithiocarbamic acid accelerant and insoluble sulfur as auxiliary materials. One part is mixed through an open mill or an internal mixer to prepare masterbatch containing insoluble sulfur, then the masterbatch is dissolved in n-heptane to obtain first masterbatch cement, the other part is directly dissolved in n-heptane to obtain second masterbatch cement containing the accelerant SDC, and the two kinds of rubber cement are mixed according to the mass ratio of 1: 1 during use. The rubber cement is moderate in hardness and can perfectly accord with a natural rubber inner liner of an existing aircraft tire, the bonding strength between a static balance sheet using the rubber cement and a tire lining of the tire is high, and the rubber cement has the advantages of relatively high tensile strength and tearing strength, good heat aging resistance and room-temperature vulcanization capacity.

The invention discloses formaldehyde-free soft white adhesive cement and a preparation method thereof, and relates to the technical field of adhesive cement. The cleaning agent is prepared from the following raw materials in parts by mass: 57 to 67.5 parts of deionized water, 0.5 to 0.6 part of sodium bicarbonate, 90 to 108 parts of pre-emulsified liquid, 1 to 1.2 parts of ammonium persulfate, 3 to 4 parts of hybrid nano microspheres and 1.5 to 1.8 parts of propylene glycol methyl ether acetate. Wherein the pre-emulsion is prepared from the following raw materials in parts by mass: 45 to 54 parts of butyl acrylate, 20 to 24 parts of methyl methacrylate, 3 to 3.6 parts of acrylic acid, 5 to 6 parts of alpha-silane-terminated dynamic cross-linking agent, 15 to 18 parts of deionized water, 1 to 1.2 parts of sodium dodecyl benzene sulfonate and 1 to 1.2 parts of fatty alcohol-polyoxyethylene ether. According to the formaldehyde-free white adhesive cement disclosed by the invention, due to the introduction of the components such as the hybrid nano-microspheres and the alpha-silane-terminated dynamic crosslinking agent, the washing resistance, the flexibility after curing and the storage stability of the formaldehyde-free white adhesive cement are effectively improved.

The invention discloses slag modified rubber cement mortar and a preparation process thereof, and relates to the technical field of cement mortar, the addition of rubber particles can improve the sound insulation performance of the cement mortar, but can lead to obvious reduction of the strength of the cement mortar. The polypropylene fiber has the advantages of high tensile strength, friction resistance and the like, so that the strength of the cement mortar can be improved and the durability of the cement mortar can be enhanced by adding the polypropylene fiber into the cement mortar. The rubber particles and the polypropylene fibers are compounded by using the dopamine, and the hydrophilicity of the rubber particle-polypropylene fiber compound is also improved by using the dopamine, so that the water glass solution is better loaded on the surface of the rubber particle-polypropylene fiber compound, and the mechanical property of the cement mortar is enhanced.

The application discloses a rubber-cement composite material surface modifier optimization method based on molecular simulation, which comprises the following steps: based on molecular dynamics simulation, a full-atom numerical model for characterizing the physicochemical properties of cement matrix, rubber and modifier material is constructed by using Materials Studio software; based on the full-atom numerical model, the Gibbs free energy of the material system is calculated by using a quantum mechanics method to predict whether chemical reaction or physical adsorption behavior occurs between the selected modifier and the two types of materials of rubber and cement, and finally a rubber-cement-based composite material system model before and after the treatment of the modifier is constructed; the free volume fraction and atomic concentration of the composite material system model before and after the modification are analyzed on a microscale to quantitatively evaluate the effect of the modifier on the material performance, and then the optimal surface modifier is determined. The application can construct a numerical model accurately reflecting the material properties and analyze and optimize the material surface / interface modifier.

The invention relates to the technical field of polyurethane, and particularly discloses waterborne polyurethane, a preparation method thereof and application of the waterborne polyurethane in printing adhesive cement. The preparation method of the waterborne polyurethane comprises the following steps: S1, at 98-102 DEG C, carrying out heat preservation reaction on 170-180 parts by weight of polyol, 45-55 parts by weight of isocyanate and 5-10 parts by weight of 1, 4-butanediol for 1.5-2.5 hours, then adding 25-35 parts by weight of acetone and 0.08-0.12 part by weight of a catalyst, and continuously carrying out heat preservation reaction until the content of NCO in a system is 0.8-1.2%; s2, adding 515-525 parts of acetone into a system obtained in S1, cooling to 45 DEG C or below, adding 4-6 parts of sulfonate, continuously stirring for 25-35 minutes, then adding 280-320 parts of water, emulsifying for 5-10 minutes, adding 35-45 parts of a diaminocarboxylic acid aqueous solution after emulsification is finished, and uniformly mixing; and S3, carrying out reduced pressure distillation on the system obtained in the step S2, adjusting the pH value of the system to be neutral, and filtering to obtain the waterborne polyurethane. The polyurethane provided by the invention can be used for printing rubber cement, and has the advantage of prolonging the opening time of the printing rubber cement.

The utility model relates to the technical field of pad printing equipment, and discloses a rubber cement material pad printing device which comprises a telescopic column, a connecting base, a pad printing mold and a clamping assembly, the connecting base is fixed to the end of the telescopic column through a bolt, the clamping assembly is arranged at the bottom of the connecting base, and the pad printing mold is clamped by the clamping assembly; and the clamping assembly comprises a clamping module, a rotating rod and a small motor, one end of the clamping module is arranged at the position, close to the bottom, in the connecting base, the rotating rod is arranged in the connecting base and is in threaded connection with the clamping module, and the small motor is arranged on the outer side of the connecting base. According to the adhesive cement material transfer printing device, the rotating rod is driven by the small motor to rotate, and the two sections of threads arranged outside the rotating rod are opposite in direction and are in threaded connection with the two first sliding feet correspondingly, so that the two first sliding feet are close to or away from each other, then the arc-shaped clamping blocks and the second sliding feet are driven to move, and a replaced transfer printing mold is conveniently clamped.

The invention relates to the technical field of rubber protective materials, and discloses a synergistically modified ethylene propylene diene monomer glove material with high chemical medium permeation resistance and a preparation method thereof. The glove material comprises synergistically modified ethylene propylene diene monomer rubber, zinc oxide, dicumyl peroxide, sulfur, an accelerant, an anti-aging agent, carbon black, a silane coupling agent and an organic solvent, wherein the synergistically modified ethylene propylene diene monomer rubber constructs a multi-crosslinking system synergistically by introducing a hydrazine hydrazone dynamic covalent network, a coordination structure and an organic-inorganic hybrid structure. The preparation method comprises the following steps: preparing synergistically modified ethylene propylene diene monomer rubber, preparing a rubber compound and rubber cement, and carrying out dip forming on a mold to form the glove material with the multi-layer compact structure. Through multi-scale synergistic modification, the chemical medium permeation resistance, the air tightness, the mechanical property and the aging resistance of the material are remarkably improved, the preparation process is simple, and the material is suitable for the field of high-end dry box protection.

The invention provides a crack defect repairing method for a large rubber-fabric composite flexible sealing ring. The crack defect repairing method comprises the following steps: a) detecting and recording the hardness of the sealing ring in a plane area around a crack defect; b) polishing the crack part to form a repairing area which is tidy in edge and is flush with the original sealing surface, and measuring the size of the repairing area; c) selecting an unvulcanized rubber repair film matched with the hardness of the sealing ring; d) sequentially carrying out sand blasting, solvent cleaning and rubber cement impregnation pretreatment on the repairing fabric; e) cutting rubber repairing films and repairing fabrics according to the types of the crack defects, and alternately arranging and filling the repairing area with the rubber repairing films and the repairing fabrics to form a repairing layer; (f) placing the sealing ring filled with the repairing layer into a heating mold matched with the section of the original sealing ring, heating, pressurizing and vulcanizing to finish repairing; layered repairing and heat vulcanization reinforcing are adopted according to the crack type, on-site rapid repairing of the flexible sealing ring is achieved, the strength and the air tightness are remarkably recovered, meanwhile, the downtime is effectively shortened, and the maintenance cost is reduced.

The present application relates to a kind of rubber cement stabilized macadam mixtures rubber particle gradation optimization method, comprising the following steps: step 1, accurately control the gradation of aggregate;Step 2, determine rubber uniform dosage and cement uniform dosage;Step 3, select six positions of the largest size in particle size size below 9.5mm as replacement position, corresponding to the rubber particles of the same position are made;Step 4, for the aggregate position above particle size 2.36mm, the same volume of rubber particles of the same position is replaced, for the aggregate position below particle size 2.36, the rubber particle gradation is replaced using down-grade half method, obtain six groups of rubber particle gradation scheme;Step 5, prepare ordinary cement stabilized macadam test piece and six kinds of rubber cement stabilized macadam test piece under gradation scheme;Step 6, compare to obtain the best gradation scheme;The present application can realize the determination of the best rubber particle replacement scheme, help to promote the research of rubber particle mixed in ordinary cement stabilized macadam.

The utility model discloses a kind of rubber cement packaging equipment's rubber cement module, including horizontal displacement mechanism, the mounting bracket of setting in the movable end of horizontal displacement mechanism, the material wheel of rotation setting in mounting bracket for placing adhesive tape, the material pulling mechanism for pulling out adhesive tape along vertical direction, the compression roller assembly for being set to the rear of material pulling mechanism and being used to press the upper and lower surfaces of the outer edge of paper tray on the adhesive tape pulled out and the cutter assembly being set to the upper of compression roller assembly;Horizontal displacement mechanism includes mounting seat, the first screw rod of rotation setting in mounting seat, the first motor of being installed in one end of mounting seat and being connected with first screw rod and the sliding seat of being slidably arranged in mounting seat, sliding seat is provided with screw nut for being used to form thread cooperation with first screw rod, mounting bracket is connected with sliding seat.The utility model has the advantages of small control noise, stable operation, high control precision, and can control rubber cement module to any position according to actual needs, to adapt to different specifications of paper tray rubber cement needs.

The utility model discloses a reflective fabric for a tire. The reflective fabric comprises a reflective layer, an elastic fabric layer, a rubber cement layer and a rubber layer, the elastic fabric layer, the adhesive cement layer and the rubber layer are sequentially attached from top to bottom, the light reflecting layer is located on the top face of the elastic fabric layer and fixedly attached to the top face of the elastic fabric layer, the knitted fabric layer is arranged on the bottom face of the elastic fabric layer, the elastic fabric layer and the knitted fabric layer are integrally formed and woven, the adhesive cement layer is excessively filled with adhesive materials, and the adhesive materials are immersed in gaps of the knitted fabric layer. The surface of the rubber layer is smooth and tightly bonded with the mucilage layer; according to the reflective fabric in the patent scheme, through the design that the elastic fabric layer and the knitted fabric layer are woven and integrally formed, the thickness of the rubber layer can be effectively reduced, the ductility and the bending performance of the reflective fabric are greatly improved, and the reflective fabric can automatically adapt to vulcanization, attachment and fixed installation work of tires of different sizes; and the phenomenon that conventional products of the type turn up or fall off in the vulcanization process is avoided.

The utility model provides a movable reciprocating glue spraying and recycling paddle bucket, and belongs to the technical field of glue spraying cotton production equipment. Supports are arranged on the two sides of the fiber web conveying mechanism. A reciprocating glue spraying mechanism is arranged at the top of the bracket; sliding rails are arranged on the support and located below the two ends of the reciprocating type glue spraying mechanism. A mucilage collecting hopper is arranged on the sliding rail in a sliding manner; the bottom of the rubber cement collecting hopper is obliquely arranged, and the end part, facing the center of the fiber web conveying mechanism, of the rubber cement collecting hopper is relatively high; the end, away from the center of the fiber web conveying mechanism, of the rubber cement collecting hopper is provided with a liquid discharging conveying pipe. The glue collecting hoppers are arranged below the two ends of the reciprocating type glue spraying mechanism, glue which is sprayed by the glue spraying mechanism and exceeds the edge of a fiber web can be recycled, the glue recycling proportion is improved, meanwhile, the glue is prevented from being adhered to a chain rod of the fiber web conveying mechanism, and the influence on fiber web conveying is reduced.

The utility model discloses an automatic gluing device for a formed edge part of a conveying belt, which relates to the technical field of rubber conveying belts and comprises a material box and a pasting component, the material box comprises an upper material box and a lower material box which are arranged up and down, and the lower material box is used for storing rubber cement; the upper material box and the lower material box are connected to form a supporting table used for bearing the edge of a belt blank of the conveying belt. The pasting assembly is arranged on the upper material box and comprises a first pasting piece partially extending to the supporting table so as to make contact with the edge of the conveying belt blank and a second pasting piece capable of making contact with adhesive cement and transferring the adhesive cement to the first pasting piece so as to coat the edge of the conveying belt blank. According to the automatic gluing device, the second gluing piece makes contact with the mucilage and transfers the mucilage to the first gluing piece to coat the edge of the belt blank of the conveying belt, manual operation is not needed, the automatic gluing device continuously and evenly smears the mucilage on the edge of the belt blank of the conveying belt along with continuous movement of the forming trolley, and the phenomena that the mucilage is not evenly smeared, the labor cost is increased, and materials are wasted can be avoided.

The utility model relates to the technical field of submersible electric pump cable sealing structures, in particular to a sealing structure of a submersible electric pump cable, which comprises an electric pump body, a pipe seat is integrally constructed on the surface of the top end of the electric pump body, a flange sleeve is inserted into the surface of the top end of the pipe seat, and a bolt for fixing is assembled between the flange sleeve and the pipe seat. A plurality of groups of bolts are arranged, and a rubber sleeve is adhered to the inner side of the flange sleeve; when the submersible electric pump is used, the plug at the bottom of the cable and the socket on the inner side of the pipe base at the top of the electric pump body can be mutually inserted, then the rubber sleeve integrally constructed on the periphery of the cable can drive the flange sleeve glued with the rubber sleeve to be mutually inserted with the pipe base, and then the flange sleeve and the pipe base are fixed through bolts. And a water source cannot enter the position between the pipe base and the flange sleeve, so that the electric pump body can stably operate, and meanwhile, the cable and the electric pump body can be conveniently detached and independently moved.

The invention provides bio-based degradable mucilage as well as a preparation method and application thereof. The bio-based degradable mucilage comprises priming slurry and white mucilage, the priming slurry comprises, by mass, 35%-40% of bio-based polyacrylate resin emulsion, 30%-40% of water, 5%-10% of propylene glycol, 3%-7% of titanium dioxide, 10%-20% of activated carbon and 1%-3% of a thickening agent; the white rubber cement comprises the following components in percentage by mass: 25%-35% of bio-based polyacrylate resin emulsion, 25%-35% of water, 5%-10% of propylene glycol, 2%-5% of solid paraffin, 1%-3% of silicon dioxide and 1%-3% of a thickening agent. The invention provides high-performance printing rubber cement which is biodegradable in all components and suitable for dark cloth, and solves the problems of environmental defects and printing quality of traditional rubber cement.

The invention belongs to the technical field of building materials, and provides modified rubber particles based on microorganism induced calcium carbonate deposition, a preparation method of the modified rubber particles and a rubber cement-based material. The preparation method comprises the following steps: carrying out surface hydrophilic pretreatment on rubber particles to obtain pretreated rubber particles; the method comprises the following steps: mixing pretreated rubber particles with a mineralized microorganism bacterial solution in the early stage of growth stability, culturing to obtain rubber particles adsorbed with mineralized microorganisms, mixing the rubber particles adsorbed with mineralized microorganisms with a cementing solution obtained by mixing a urea aqueous solution and a calcium acetate aqueous solution, and carrying out a deposition reaction, the modified rubber particles based on microorganism induced calcium carbonate deposition are obtained. According to the method, the adsorption quantity of bacteria on the surfaces of the rubber particles can be remarkably improved, so that the generation quantity of calcium carbonate crystals on the surfaces of the rubber particles is improved, the surface properties of the rubber particles can be comprehensively improved, the mechanical property of a rubber cement-based material can be remarkably improved, and the method has a very wide application prospect.

The invention discloses a nano rubber cement-based composite material and a preparation method thereof, and belongs to the technical field of building materials. The raw materials of the composite material comprise cement and nano rubber powder, and the weight of the nano rubber powder is 1%-4% of the weight of the cement. The durability of the nano rubber cement-based composite material is greatly improved compared with that of neat cement paste. The nano rubber has a hydrophobic characteristic, so that the water absorption rate of the cement matrix is reduced by the modification of the nano rubber on the cement matrix, and meanwhile, the pore connectivity of the cement matrix modified by the nano rubber is reduced, so that the carbonization resistance and freeze-thaw resistance of the cement-based material are greatly improved compared with those of cement paste; the permeability of erosion ions such as chloride ions and sulfate ions is greatly reduced, and long-term safe operation of cement-based buildings is facilitated.