100results about How to "Solve bonding problems" patented technology

The invention discloses a brick unloading and stacking unit and a brick unloading and stacking method for sintered bricks. The brick unloading and stacking unit comprises a brick unloading machine for unloading the sintered bricks from a kiln car layer by layer and a pushing mechanism for gathering the bricks transversely; a first roller way conveying platform which is connected behind the brick unloading and stacking unit is provided with a brick collimating device capable of gathering the bricks longitudinally; the first roller way conveying platform is used for grouping the bricks and conveying the bricks onto a second roller way conveying platform which is connected with the first roller way conveying platform under the control of a controller; a conveying device for conveying the grouped bricks along a direction vertical to the conveying direction of the first roller way conveying platform forward is arranged above the second roller way conveying platform; a brick gathering platform is arranged at the tail end of the second roller way conveying platform; a stacking machine for stacking the bricks on the brick gathering platform by clamping in groups is arranged above the brick gathering platform. According to the brick unloading and stacking unit, a full mechanical process from unloading to stacking is realized, the problem of bonding caused by deformation of sintered bricks is solved effectively, the requirement of automatic production is met, and the labor force of workers and production cost are greatly reduced.

The invention provides a halogen-free flame-retardant two-component polyurethane adhesive for a railway vehicle and a preparation method thereof, belonging to the technical field of two-component polyurethane adhesives. The main objective of the invention is to overcome problems in bonding of the structures of the bodies of a high-speed railway carriage and a rail transit vehicle. The polyurethane adhesive mainly a component A and a component B, wherein the component A and the component B are in a weight ratio of 6: 1, the component A comprises, by weight, 10 to 35% of castor oil polyol, 10 to 40% of polyester polyol, 5 to 30% of bisphenol A polyether polyol, 5 to 25% of a flame-retardant plasticizer, 30 to 60% of a flame-retardant inorganic filling material, 0.5 to 3% of a coupling agent and 0.1 to 0.5% of a catalyst, and the component B is an isocyanate curing agent containing liquefied methyl diphenylene diisocyanate. The polyurethane adhesive has the characteristics of good flame retardation effect, environment friendliness, good bonding strength after curing and good toughness and is mainly applied to self-adhesion and mutual adhesion of materials like metals and timber of the bodies of railway vehicles.

The invention provides a hot in-place recycling ultrathin overlaying machine of a bituminous pavement and a construction method thereof. The hot in-place recycling ultrathin overlaying machine of the bituminous pavement comprises an automobile chassis, an integral power device, an electric control system, a diesel tank, a receiving and transporting device, a material transfer hopper, a horizontal transporting device, a heating device, a hydraulic system, a recycling agent spraying system, a harrowing device, a distributing spiral device, a paving screed device, a cab, and an electric control operating floor, wherein the automobile chassis is a special automobile chassis. The hot in-place recycling ultrathin overlaying machine of the bituminous pavement finishes the continuous overlay repair work of the pavement through a series of processes such as receiving the materials, feeding the materials quantitatively, transporting the materials horizontally, spraying the recycling agent, harrowing, heating, distributing and paving the materials, ironing, and grinding and the like, and has the advantage of carrying out one-time maintenance on the defects such as loose, shallow vertical and horizontal cracks, track, slight crack, bituminous aging, pavement seepage and the like of a functional layer of the pavement. By adopting the invention, the antiskid resistance of the pavement is restored, the profile of the pavement is corrected, the appearance and the evenness of the pavement are improved, the pavement strength of the pavement is increased, the traffic noise is reduced, and the service life of the pavement is prolonged.

The invention discloses a homogeneous non-combustible polyurethane foam heat insulating material and a preparation method thereof. The heat insulating material is prepared by reacting the following raw materials in parts by weight: 6~20 parts of polyurethane rigid foaming material, 4~20 parts of flame retardant and 60~90 parts of inorganic filler, wherein the loose packing density of the inorganicfiller is 1.0~2.0 g/cm<3>. The heat insulating material prepared by the invention has overall density between 120 and 800 kg/m<3>, compressive strength being greater than and equal to 0.10 MPa, highmechanical strength, good durability, total heat value being smaller than and equal to 3.0 MJ/kg, combustion growth rate index being smaller than and equal to 120 W/s and 600 s total heat release ratebeing smaller than and equal to 7.5 MJ, and belongs to A2 grade non-combustible material, and has high fire-proofing safety and simple preparation process, and can realize industrial production.

The invention relates to a tackifier which is prepared by the following steps of: adding 500-700 parts by weight of hydroxy silicone oil and 120-230 parts by weight of KH560 in a reactor; heating, slowly adding 0.2-1.0 parts by weight of organic tin at the temperature of 35 DEG C to 45 DEG C, slowly adding 50-70 parts by weight of KH570 under the temperature of 45 DEG C within 60min; reacting for more than 0.3h at the temperature of 40 DEG C to 60 DEG C; reacting for more than 0.5h under a vacuum condition, controlling the vacuum degree so that the material solution does not foam; and stopping vacuumizing, keeping on reacting for more than 0.3h, stopping heating, cooling, and discharging to the tackifier. The tackifier is colorless or faint yellow transparent liquid; when the tackifier is used in the two-component addition-type silicone resin, the inter-solubility is very good, and no chameleon phenomenon and peculiar smell appears; the bonding force is enhanced by 50% than that of the traditional tackifier; and the bonding force to PPA (polyphthalamide) reaches 100N, and meanwhile, the bonding problem of PC (poly carbonate) and metal sliver is solved.

The invention discloses an oxygen supply sizing agent groove system and a ceramic surface exposure 3D continuous printing method. The oxygen supply sizing agent groove system comprises an oxygen supply device, a base plate, a connecting pipe, an air-permeable thin film and a sizing agent groove which is of a cylindrical structure; an annular protrusion is horizontally arranged on the inner wall of the sizing agent groove, the upper surface of an annular groove is covered with the air-permeable thin film, the annular groove is formed in the lower surface of the annular protrusion, the base plate is fixed to the bottom of the sizing agent groove, an annular seal structure is defined by the annular groove and the base plate, and a seal chamber is defined by the base plate, the annular protrusion and the air-permeable thin film; multiple through holes are evenly formed in the side wall of the annular protrusion, the annular seal structure is communicated with the seal chamber through the through holes, one end of the connecting pipe is connected with the oxygen supply device, and the other end of the connecting pipe passes through the wall surface of the sizing agent groove and the side face of the annular groove and is inserted into the annual seal structure. By means of the oxygen supply sizing agent groove system, the bonding problem of ceramic biscuits and base plates can be effectively solved, and thereby the continuous ceramic printing is achieved.

The invention discloses a method for performing surface modification on a reinforcing fiber by using a crystalline polyaryletherketone sizing agent, and belongs to the technical field of reinforcing fiber surface treatment. A soluble polyaryletherketone precursor is configured as a solution, an interface reinforcing filler is added under the ultrasonic oscillation condition to prepare the solublepolyaryletherketone sizing agent, and the soluble polyaryletherketone sizing agent is placed in a sizing tank; after the sizing agent is used for sizing the reinforcing fiber, a solvent is dried by evaporation to enable the soluble polyarylether precursor to be uniformly adhered to the surface of the reinforcing fiber, and then the precursor on the surface of the reinforcing fiber generates a hydrolysis reaction under the acidic condition and is converted into polyaryletherketone with the crystallinity, the heat resistance and the insolubility in the organic solvent; and finally, water is evaporated to obtain the reinforcing fiber modified by the crystalline polyaryletherketone sizing agent. When the modified reinforcing fiber is used for reinforcing PEEK resin, the interfacial shear strength (IFSS) of a composite material is remarkably improved (267%) compared with an unsized carbon fiber, and the modified reinforcing fiber is solvent-resistant and can be used at the high temperature.

The invention discloses a construction method for reconstruction of an old cement pavement into an asphalt concrete pavement, the steps are as follows: 1, pouring seams of the to-be-reconstructed old cement pavement, 2, judging the damage degree of the to-be-reconstructed old cement pavement, and processing damages; 3, spraying hot rubber asphalt on the damage-processed pavement, spreading an aggregate on the hot rubber asphalt, and rolling to embed the spread aggregate into an asphalt film to form a stress absorption and seepage prevention rubber asphalt stress absorbing layer; 4, paving a grating net sheet on the rubber asphalt stress absorbing layer, and fixing; and, paving an asphalt concrete surface layer on the grating net sheet, wherein the asphalt concrete surface layer is paved in two times. The maintenance cost is greatly reduced, the highway overhaul time is greatly extended, the pavement service life is prolonged more than 1 time, and good economic and social benefits are received. In the rubber asphalt production process, tire waste is used, energy is saved, and the construction method is conducive to environmental protection.

The present invention relates to a primer composition. which comprises: 100 parts by mass of an alkoxy-modified polymer (A) having a P1-[(CR<1>2)a-Si(OR<2>)bR<3>(3-b)]c structure, 10 to 250 parts by mass of a cross-linking agent (B) containing more than three alkoxy silicon groups, 5 to 80 parts by mass of a silane coupling agent C comprising at least more than 1 part by mass of a nitrogen-containing organosilane coupling agent (C<1>) having a ZkSiR<23>1(OR<24>)mO(4-k-l-m)/2 unit, 0 to 10 parts by mass of a catalyst (D), and a solvent (E) in an amount satisfying m(E)/m (primer) of 0.5 to 0.9.The primer composition can be used for pretreating a porous base material bonded by a silane-modified building sealant, is hydrolyzed and cross-linked in the presence of moisture after being applied,has excellent hydrolysis resistance and sealant precipitate erosion resistance after being cured, and can be suitable for most of silane modified sealants sold in the market, such as modified silicone(MS), silane terminated polyurethane (SPU), silane terminated polyether (STPE) and the like.

The invention discloses a novel metal diffusion bonding technology. Main steps comprises steps that: two parts on which a bonding metal layer is deposited are packaged in a vacuum sealing soft bag, the vacuum sealing soft bag is then put in a container filled with liquid, the container is connected with a pressure device, pressure generated by the pressure device is exerted on a part needing bonding through the liquid in the container and the vacuum sealing soft bag, temperature rising is further realized simultaneously, so metal diffusion bonding is realized under effects of the temperature and the pressure. The novel metal diffusion bonding technology can guarantee uniform bonding pressure in each direction and does not easily cause rupture damage to a crimping material even under high pressure intensity, so a bonding effect is improved. The exerted pressure is great, so reliable bonding can further be realized even under lower temperature, lowest work temperature can be 80 DEG C, moreover, the novel metal diffusion bonding technology can reduce requirements for technology clamps and physical dimensions of bonding materials.

The invention provides a method and a device for welding PTFE plates. The weld strength and the elongation at break of the welded PTFE plates are not less than 80% of the physical mechanical property of an original plate. The method comprises the following steps: two PTFE plates are in butt joint with each other, and butt-joint areas are heated so as to be melted, then are cooled, and are pressed when being heated, and melts in heating areas can freely flow in the direction vertical to butt-joint seams and parallel to the PTFE plates under the condition of bearing pressure. The device comprises a fixing device used for fixing one PTFE plate, a heating device used for heating the butt-joint areas, a clamping device used for clamping the other PTFE plate, and a pressing device including ropes and pulleys; the ropes are used for hanging balance weights, and are connected with the clamping device through the pulleys; and the balance weights enable the clamped PTFE plate to tightly press the other fixed one in the direction vertical to the butt-joint seams and parallel to the PTFE plates.

The invention discloses a method for preparing a TZ-PSBSR soldering rubber blended waterproof coiled material. The TZ-PSBSR soldering rubber blended waterproof coiled material consists of POE (7380), styrene-butadiene rubber (1502), SBS (1401), precipitated calcium carbonate, carbon black N330, DOP, sulfur, an age inhibiter RD, TMTD, and an age inhibiter 4010. The preparation method comprises the following steps: adding all raw materials in formula proportion into a banbury machine for banburying at a temperature of between 130 and 150 DEG C for 9min, evenly mixing the raw materials, and discharging; performing rubber reversing on a 560 mill mixer, reducing the temperature to less than or equal to 90 DEG C to discharge strips, filtering impurities by a rubber strainer, performing thinning and mixing on a 450 mill mixer, and discharging strips after even mixing; performing extrusion molding by an extruder, and vulcanizing the formed coiled material in a 20m continuous vulcanizing boiler at 160 DEG C and 0.3MPa; and finally rolling and packaging. The method solves the problem of adhesion of the rubber blended waterproof coiled material so as to make the rubber blended waterproof coiled material form an integral waterproof layer.

The invention discloses a rotor homopolarity magnetic steel bonding and positioning device. The device comprises a positioning sleeve and a plurality of elastic assemblies, wherein the plurality of elastic assemblies are uniformly arranged along a circumferential direction of the positioning sleeve, each elastic assembly comprises a screw, a tightening block and a spring, the tightening block is arranged at an inner side of the positioning sleeve and is connected with an end part of the screw, the spring sleeves the screw and is arranged between the tightening block and the positioning sleeve, a positioning boss is further arranged at the center of the positioning sleeve, the screw comprises a screw rod and a screw head, the screw rod and the screw head are connected by a square boss, a screw insertion hole is formed in the positioning sleeve and is used for installing the screw, and a square groove is formed above the screw insertion hole and is matched with the square boss. By the device, adjacent magnetic steels repellent to each other can be rapidly and reliably bonded, and the assembly speed and the assembly accuracy are obviously improved. The device is simple in structure, is easy to manufacture and rapid to operate, and can be widely promoted and applied in the technical field of rotor magnetic steel bonding.

The invention relates to a semiconductor structure, and specifically relates to a diode packaging structure. The diode packaging structure comprises a substrate, a packaging body arranged at the upper end surface of the substrate, and a plurality of electrodes arranged at the lower end surface of the substrate. The upper end of the substrate is provided with a groove, the groove is internally provided with a tube core assembly, the upper end surface of the substrate is provided with a bonding block, the tube core assembly and the bonding block are connected through a lead wire, the packaging body and the substrate form a cavity, and the tube core assembly and the bonding block are arranged in the cavity. According to the invention, the problem of bonding between the tube core assembly and the electrodes is effectively solved, the connection between the tube core assembly and the bonding block is facilitated, the production process difficulty is lowered, the production efficiency is improved, the lead wire connecting the tube core assembly and the bonding block is not easily shaken and is not easily broken, and the quality of a manufactured product is enabled to be better. Besides, the diode packaging structure also has the advantages of good sealing performance, high heat dissipation performance and the like.

The invention discloses a high-water-resistance primer for a silane modified building sealant, wherein the high-water-resistance primer comprises the following components in percentage by mass: 5-50%of an alkoxy modified polymer (A), 3-50% of a cross-linking agent (B), 0.5-10% of a silane coupling agent (C), 0-2% of a catalyst (D) and 10-90% of a solvent (E). According to the invention, the primer can be used for pretreating a porous base material bonded by a silane modified building sealant; and the primer is volatilized along with the solvent after being applied,, the primer is hydrolyzed and cross-linked by siloxane groups after curing in the presence of moisture, a film is formed on the bonding interface of the porous base material, the cured film-forming polymer contains a large number of non-polar main chain structures, the hydrolysis resistance is excellent, and the siloxane curing bonding point and the bonded sealant have excellent bonding compatibility, so that the bonding capability between the sealant and the base material can be improved, and the primer is suitable for most silane modified sealants sold in the market, such as modified silicone (MS), silane terminated polyurethane (SPU), silane terminated polyether (STPE) and the like.

The present invention discloses a method for manufacturing lining plastic pipe by using welded connection. The method comprises the following steps: (1) stripping one section of the plastic anticorrosive coating of the lining plastic pipe port that has been subjected to lining plastic recombination, wherein the lining plastic pipe port being stripped the plastic anticorrosive coating is the connection end of the external steel pipe; (2) lining the inner wall of the connection end that is not lined with the plastic anticorrosive coating with a hot melt adhesive, wherein the hot melt adhesive is adhered to the inner wall of the connection end to form a hot melt adhesive layer; (3) inserting a stainless steel pipe into the external steel pipe from the connection end of the external steel pipe, wherein the outer wall of the stainless steel pipe is adhered with the hot melt adhesive layer; and (4) welding the outer wall of the stainless steel pipe and the port of the external steel pipe. The lining plastic pipe manufactured by this method can efficiently solve the problem of electrochemical corrosion after welding the dissimilar steel, solve the structural problem that the steel-plastic pipe cannot directly adopt welded connection, and expands the application of the stainless steel in steel-plastic pipe manufacture.

The invention relates to an injection molding suspension, which is characterized in that: a thermoplastic elastomer, a metal outer liner tube and a metal inner liner tube are subjected to injection molding to form an injection molding body; and a metal inner tube is pressed into the metal inner liner tube to ensure interference fit between the metal inner tube and the metal inner liner tube, wherein the thermoplastic elastomer is positioned between the metal outer liner tube and the metal inner liner tube and is respectively connected with the metal outer liner tube and the metal inner liner tube; and through holes are uniformly distributed on the surfaces of the metal outer liner tube and the metal inner liner tube. By injection-molding the thermoplastic elastomer, the optimized suspension structure solves the problem of bonding TPV and metal pieces, the TPV replaces rubber, and the pollution of waste gas, waste water and dust to the environment in the suspension manufacturing process is reduced.

The invention discloses a two-component bonding nylon silica gel, belonging to the technical field of silicone rubber materials. The two-component bonding nylon silica gel comprises, by weight, 100 parts of methyl vinyl rubber containing 0.25% by mol of vinyl groups, 30-80 parts of fumed silica, 3-6 parts of hydroxyl silicone oil, 3-6 parts of vinyl triethoxysilane, 2 to 4 parts of stearic acid 1801, 3 to 5 parts of a binder, 0.5 to 5 parts of hydrogen-containing silicone oil, 0.5 to 5 parts of an inhibitor and 0.5 to 5 parts of a platinum complex. The two-component a bonding nylon silica gelprepared in the invention has excellent bonding performance with nylon, sufficient strength and good processing properties, is not prone to deformation, and can fully meet the requirements of food tableware.

The invention discloses a heat-vulcanization adhesive for adhering ceramics with elastomer. The heat-vulcanization adhesive comprises the following components in percentage by weight: 5-15% of phenolic resin, 5-15% of a film-forming agent, 0.5-5% of an extra formaldehyde source, 0.5-5% of an acid acceptor, 5-10% of an adhesion promoter and the balance solvent. The heat-vulcanization adhesive is characterized in that a phenolic compound supported by a silicane-containing modified organic porous material is used as the adhesion promoter, so that the adhesive forms a high-strength high-activity active transition layer between the elastomer and hard ceramics, and therefore, adhesion of the high-strength hard ceramics by the adhesive is effectively realized.