4253 results about "Rubber material" patented technology

The invention relates to a high / low-temperature-resistant wear-resistant tear-resistant fluorosilicone rubber compound and a preparation method thereof, and belongs to the technical field of special rubber materials, the high / low-temperature-resistant wear-resistant tear-resistant fluorosilicone rubber compound comprises the following components: raw fluorosilicone rubber, a reactive liquid rubber compatibilizer, a reinforcing filler, a tear-resistant aid, a high-temperature-resistant aid, a vulcanizing agent, an accelerant, an anti-aging agent and an anti-attrition filler, the provided reaction type liquid rubber compatibilizer contains vinyl carboxyl liquid fluorosilicone rubber, the tear-resistant auxiliary agent contains zinc polymethacrylate, the high-temperature auxiliary agent contains vinyl fluorosilane modified carbon nanotubes, and the anti-friction filler contains molybdenum disulfide and layered nano zirconium phosphate which are treated by oxygen plasma. The high and low temperature resistance stability, oil resistance, wear resistance and tear strength of the fluorosilicone rubber are synergistically improved by regulating and controlling the multi-cross-linked network structure of the fluorosilicone rubber, strengthening the interface action of the rubber and the filler and optimizing the composite vulcanization system, meanwhile, structuralization of a rubber compound is prevented by optimizing the preparation process, and the requirement for adaptability to severe working conditions is met.

A performance testing apparatus and testing method for a data cable, belonging to the technical field of data cable performance testing. An arranged testing unit (2) can carry out three separate testing contents, namely a tensile strength test, a torsion test, and a wear resistance test on the basis of testing sequence requirements, and can also separately carry out pairwise combination tests or simultaneous testing of three items, so that a testing result is ensured to be more accurate while the testing contents are flexible. A positioning unit (3) comprises a fixture which consists of a set of a rubber pad one (340) and a rubber pad two (3710) that are oppositely arranged and which is in contact with the data cable. A rubber material is unlikely to damage the outer skin of a data cable, and the end surfaces of the rubber pad one (340) and the rubber pad two (3710) in contact with the data cable are arranged in a concave-convex shape, so that the data cable is better fixed and clamped, thereby preventing the two ends of the data cable from being loosened during testing and affecting testing progress and testing results.

The invention relates to the technical field of sealing ring hot-press forming, discloses sealing ring hot-press forming equipment, and aims to solve the problems of low finished product taking-out and mold cleaning efficiency and low automation degree in the prior art. The equipment comprises a hot press base, a hot press base and a lower die which are arranged on the hot press base, and a hot press plate and an upper die which are arranged above the hot press base in a lifting manner. The pushing part and the scraping part which work in a linkage mode are arranged, and the pushing part comprises a lifting supporting and pushing piece driven by an electric rod and a top ring and is used for upwards ejecting out a sealing ring formed in a lower mold; the scraping part comprises a rotation guiding part for enabling the supporting and pushing part to rotate during ascending and descending and a silica gel scraper which is elastically connected to the top ring and can be unfolded in the ejection process, and when the electric rod drives the pushing part to ascend to eject out the sealing ring, the rotation guiding part enables the pushing part to integrally rotate, the silica gel scraper is driven to be tightly attached to and scrape the inner wall of the lower mold, and residual rubber is scraped; the production cycle is shortened, and the production efficiency and the automation level are improved.

The invention discloses a multi-layer protection cable resistant to an extreme environment, and belongs to the technical field of cables. The cable is of a seven-layer composite structure design and sequentially comprises a conductor, an insulating layer, a shielding layer, a buffer layer, a waterproof layer, a heat insulation layer and a protective outer layer from inside to outside, and the conductor is made of high-purity oxygen-free copper; the insulating layer is made of a polyimide material and has high temperature resistance, low temperature resistance and excellent insulating property; the shielding layer is composed of a tinned copper wire woven mesh and a high-permeability permalloy foil, and electromagnetic interference is effectively shielded; the buffer layer is made of an elastic rubber material to relieve mechanical stress; the waterproof layer adopts a nanoscale fluorosilicone resin coating and has excellent waterproof performance; the heat insulation layer is made of ceramic fibers and aerogel, and efficient heat insulation is provided; and the protective outer layer is made of a high-strength and corrosion-resistant polyether-ether-ketone (PEEK) material. The cable has excellent high temperature resistance, low temperature resistance, corrosion resistance and electromagnetic interference resistance, is suitable for extreme environments, and ensures stable transmission of electric power and signals under extreme conditions.

The invention relates to the technical field of rubber performance evaluation, in particular to a performance data analysis and evaluation method for a rubber material. The method comprises the following steps: acquiring X-ray scanning data of a rubber sample; performing phase contrast imaging on the X-ray scanning data of the rubber sample to obtain projection data of the rubber sample; performing back projection reconstruction on the projection data of the rubber sample to obtain three-dimensional structural data of the rubber material; carrying out multi-parameter environmental simulation loading on the rubber sample to obtain environmental response data of the rubber material; dynamically collecting the environmental response data of the rubber material to obtain deformation process data of the rubber material; synchronously recording and analyzing the deformation process data of the rubber material to obtain a stress-strain characteristic pattern of the rubber material; and performing polarization spectrum excitation on the rubber sample based on the rubber material stress-strain characteristic pattern to obtain rubber molecular chain fluorescence data. According to the invention, the reliability and accuracy of rubber material performance evaluation are improved.

The invention relates to the technical field of rubber materials, in particular to a rubber composite material with self-lubricating and wear-resistant characteristics and a preparation method thereof. The rubber composite material with self-lubricating and wear-resistant characteristics is prepared from the following raw materials in parts by mass: 70 to 75 parts of nitrile rubber, 15 to 18 parts of carbon black, 30 to 35 parts of self-lubricating filler, 2 to 3 parts of plasticizer, 2 to 3 parts of zinc oxide, 2 to 3 parts of zinc stearate, 3 to 5 parts of coupling agent, 4 to 6 parts of self-lubricating additive, 1 to 1.5 parts of anti-aging agent, 1 to 1.5 parts of accelerant and 2 to 4 parts of vulcanizing agent. The prepared rubber composite material with self-lubricating and wear-resistant characteristics has excellent lubricating property, wear-resistant property and mechanical property. The method is suitable for the fields of automobile manufacturing, mechanical manufacturing, aerospace and the like.

The invention provides a method for preparing liquid reclaimed rubber through co-pyrolysis of lignin and waste rubber, and belongs to the field of rubber production and manufacturing. The industrial lignin, the waste rubber powder and the softening agent are uniformly mixed and then put into a screw extruder, moderate thermal cracking of the lignin and decrosslinking of the waste rubber powder are realized, and the prepared liquid regenerated rubber is added into a rubber composition and can replace tackifying resin, the softening agent and a plasticizer, so that the viscosity of a rubber semi-finished product is improved, the processability of a rubber material is improved, and the service life of the rubber material is prolonged. Meanwhile, the dispersion of the filler is facilitated. Meanwhile, the application range and the exerting effect of the lignin in the rubber material are also expanded, and the high-valued utilization rate of the lignin is improved.

The invention relates to an aluminum hydroxide flame retardant, in particular to a modification method of white carbon black, intrinsic flame-retardant white carbon black and a flame-retardant composite rubber material. According to the modification method disclosed by the invention, hydrogen on hydroxyl of the white carbon black is replaced by aluminum hydroxide, so that the aluminum hydroxide is grafted on the white carbon black microspheres by adopting a chemical action, and the occurrence of an agglomeration behavior after the aluminum hydroxide is added into a rubber matrix material is greatly reduced. Therefore, when the intrinsic flame-retardant white carbon black obtained by the modification method disclosed by the invention is used, ideal flame retardance can be achieved only by adding a small amount of the intrinsic flame-retardant white carbon black into a rubber matrix material. In addition, the intrinsic flame-retardant white carbon black obtained by the modification method can effectively improve the mechanical property of a rubber matrix. The modification method disclosed by the invention is simple and convenient in steps, required equipment, such as a stirrer and the like, is relatively common, does not need special environmental conditions, and has large-scale production capacity.

The invention belongs to the technical field of sealing materials and synthetic rubber, and particularly discloses a high and low temperature resistant, wear resistant and fatigue resistant ethylene propylene rubber material and a preparation method thereof. According to the invention, the ethylene propylene rubber with low ethylene content and high Mooney viscosity is used as a base material, and the flexing resistance of a rubber system is improved by adding the small-particle-size high-wear-resistance carbon black, the high-structure-degree fast extruding carbon black, the compounded semi-reinforcing carbon black and the white carbon black as reinforcing filling materials. The low temperature resistance of the rubber is improved by adding a composite plasticizer (paraffin oil is compounded with a small amount of fatty acid ester plasticizer). Meanwhile, peroxide is selected, and a small amount of sulfur is used as a vulcanization system, so that the flexing resistance can be considered while the high-temperature resistance is ensured. And finally, the anti-aging agent is supplemented to enhance the protection effect on aging caused by heat and oxygen, so that the heat resistance and fatigue resistance of the rubber material are integrally improved. The rubber material provided by the invention can be prepared by adopting a universal mixing process in the rubber industry, and is simple in process and convenient to operate.

The present invention provides a rubber member having excellent corrosion resistance and a semiconductor manufacturing–related device using the same. Provided is a rubber member that includes an olefin-based rubber, the rubber member being at least one member selected from the group consisting of building material members, mobility members, aerospace members, semiconductor members, and information communication members, and the rubber member coming into contact with a corrosive substance.

The invention discloses a simulation optimization method, device and system for tire multi-rubber modulus matching, and belongs to the technical field of tire simulation optimizing.The method comprises the steps that a tire and a pavement finite element model are built, and the tire and pavement finite element model comprises a three-dimensional tire simulation model and a two-dimensional rigid pavement model; matching a modulus attribute of a rubber material to which each finite element grid of the tire simulation model belongs through an orthogonal test design method, carrying out finite element calculation based on the tire and the pavement finite element model, and calculating multiple groups of stress-strain and strain energy data of target belted layer endpoints of the tire under different modulus attributes; and respectively calculating modulus characteristic values of the tire under different modulus attributes on the basis of the multiple groups of stress-strain and strain energy data of the endpoints of the target belted layer, so as to obtain the optimal modulus ratio of multiple rubber materials of the tire. According to the method, the precision and usability of simulation optimization are improved, the service life of the tire is prolonged, the utilization rate of tire design materials is increased, and the design cost is reduced.

The invention relates to the technical field of rubber material performance detection, in particular to a dynamic test platform and method for evaluating the bonding effect and fatigue life of rubber and a rubber cord fabric. The dynamic test platform comprises a driving mechanism, a test platform, a clamping mechanism, a monitoring system, a data acquisition module, a control system and a data analysis module. The driving mechanism can adjust the frequency, the displacement amplitude and the acceleration of loading deformation; the test platform supports normal loading pressure to realize simulation of different load working conditions; the clamping mechanism is a two-way adjustable clamp, and free displacement is achieved through a sliding rail mechanism; the monitoring system integrates a force sensor, a displacement sensor and a temperature sensor. The data acquisition module records loading process data; the control system sets parameters through a touch interface and monitors the test in real time; and the data analysis module generates an adhesion performance, fatigue life and damage form evaluation report based on an algorithm. The device can accurately reproduce the adhesive property change under the dynamic working condition, comprehensively analyzes the adhesive strength and fatigue life, provides a scientific basis for research and development and quality control of rubber products, and is suitable for testing the adhesive property of composite materials such as tires and transmission belts.

A lip exfoliator device is disclosed, which exfoliates dead skin off the lips. The lip exfoliator device comprises a body component that is configured in a rounded cylindrical shape with a closed first end and an open second end. The body component is sized and shaped to fit over a user's finger, like a finger glove. Typically, the body component is manufactured of a thin, rubber material. The interior side of the body component comprises a fine grit, exfoliant material. The fine, gritted surface will essentially exfoliate and stimulate blood flow to the lips. To use the device, the user will rub the fine, gritted surface on their lips, utilizing the exfoliant material to remove the dead skin.

The invention discloses a low-resistance and high-wear-resistance tire rubber composition as well as a preparation method and application thereof, and belongs to the technical field of rubber materials. The tire rubber composition comprises the following raw materials in parts by weight: 50-70 parts of natural rubber NR, 30-50 parts of solution polymerized styrene-butadiene rubber SSBR, 40-60 parts of modified white carbon black, 3-5 parts of zinc oxide, 1-2 parts of stearic acid, 1-3 parts of an anti-aging agent 6PPD and 2.5-3.5 parts of a vulcanization system. The prepared tire rubber material has the advantages that the rolling resistance is obviously reduced, the wear resistance is improved, the energy consumption is effectively reduced, and the requirements of new energy automobiles on high-performance tires are met. Through three-step modification treatment, the white carbon black is uniformly dispersed in a rubber matrix, and the interface bonding is firm, so that the prepared tire can reduce the rolling resistance of the tire using the tread rubber, and the tread rubber has higher wear resistance, tensile strength and elongation at break, and accords with the development direction of new energy automobiles in the future.

The invention discloses low-VOC (volatile organic compound) environment-friendly end-capped mercapto silane as well as a preparation method and application thereof.The preparation method comprises the following steps: by taking chloroalkyl trialkoxysilane and linear alkyl polyether alcohol as raw materials, reacting to form an intermediate c; reacting alkyl acyl chloride with sodium sulfide or sodium hydrosulfide to form an intermediate e; and reacting the intermediate c with the intermediate e to obtain a final product. Silane is used as a rubber auxiliary agent, so that the volatilization amount of alcohols in the internal mixing process of a rubber compound can be greatly reduced, the emission amount of VOC during operation is reduced, meanwhile, the vulcanization performance of a rubber material can be improved, the scorching time of the rubber material can be prolonged, the reinforcing effect of vulcanized rubber can be improved, the physical and mechanical properties of the vulcanized rubber can be improved, and the wet skid resistance of tread rubber can be improved; therefore, the environment-friendly rubber auxiliary agent is a multifunctional environment-friendly rubber auxiliary agent.

Provided is a component of a suspension structure, which can achieve weight reduction while ensuring rigidity. As the component of the suspension structure for a vehicle, a lower arm includes a body made of metal. A reinforcing member that increases a rigidity of the body is securely attached along an edge of the body. The reinforcing member is made of a resin material or a rubber material.

The invention discloses a preparation method of tread rubber, and belongs to the field of rubber processing. The preparation method comprises the following steps: pretreating aramid pulp, a coupling agent and a lubricant, and then adding the pretreated aramid pulp, the coupling agent and the lubricant into natural rubber to prepare aramid pulp master batch particles; the obtained aramid pulp master batch particles are added into raw materials for preparing tread rubber, and the prepared rubber material has excellent mechanical properties, wear resistance and low rolling resistance. According to the method, the dispersity and interface combination of the aramid pulp in the rubber are remarkably optimized, the comprehensive improvement of the mechanical property, the wear resistance and the rolling resistance of the tread rubber is realized, and the tread rubber has outstanding industrial application value.

The utility model relates to a continuous pipe, belongs to the technical field of oil and gas development, and particularly discloses a scratch-resistant and erosion-resistant flexible composite continuous pipe which comprises a central pipe, a transition layer, a reinforcing layer, a tensile layer and an outer protective layer which are sequentially arranged from inside to outside, and a wear-resistant and erosion-resistant epoxy resin inner coating is sprayed on the surface of an inner cavity of the central pipe. The outer protective layer is made of a scratch-resistant alloy steel material, so that the strength of the whole pipe is improved; the transition layer is made of nitrile rubber; the reinforcing layer and the tensile layer are formed by weaving composite material belts reinforced by special fiber belts, and a signal cable and a power cable are fixedly arranged in the reinforcing layer and the tensile layer respectively. The composite material continuous pipe can obviously improve the scratch resistance and the fluid erosion resistance of the inner wall, is beneficial to saving materials, improves the utilization rate of the existing composite material continuous pipe material, and is suitable for various oil and gas exploitation.

An adhesive for a tennis ball includes base rubber. The base rubber contains, as a main component thereof, liquid rubber having a number average molecular weight of not less than 10,000. The adhesive has a shear viscosity of not greater than 2,000 Pa·s. A tennis ball includes a hollow core made of a rubber material. The core includes two hemispherical half cores. The two half cores are adhered to each other by using the adhesive for a tennis ball.

The invention discloses a cross-linking agent for rubber and a preparation method thereof. The preparation method comprises the following steps: S11, dissolving 2, 4-dichlorobenzoic acid in tert-butyl alcohol, and dropwise adding concentrated sulfuric acid to obtain a mixed solution; s12, slowly dropwise adding a hydrogen peroxide solution into the mixed solution, and oxidizing to obtain a primary oxidized solution; s13, carrying out secondary oxidation on the primary oxidation solution obtained in the step S12 to obtain a secondary oxidation solution; and S14, purifying the secondary oxidation liquid obtained in the step S13 to obtain the cross-linking agent for rubber. The application of the cross-linking agent for the rubber in the rubber comprises the following steps: S21, banburying raw materials and the cross-linking agent for the rubber to prepare a rubber material; and S22, feeding the rubber material in the step S21 into a vulcanizing machine, and vulcanizing to obtain the rubber. The prepared cross-linking agent for the rubber is good in performance, the preparation method is simple, emission of three wastes is small, the atom utilization rate is high, and after the cross-linking agent is applied to the rubber, the prepared rubber is good in tensile strength, elongation at break and wear resistance index.

The utility model relates to a whole LCD (liquid crystal display) fixing structure, which is used for installing an LCD module without using glue and a double-sided adhesive tape, and comprises an upper shell, a lower shell and the LCD module, four corners of the lower shell are fixedly connected with bosses, four corners of the LCD module are fixedly connected with upright posts, the outer surfaces of the upright posts are sleeved with elastic parts, and the elastic parts are fixedly connected with the bosses. A through hole corresponding to the stand column is formed in the boss; according to the utility model, the elastic piece made of the rubber material is sleeved on the upright post, then the upright post is inserted into the boss on the lower shell, the upright post is positioned in the through hole, the elastic piece enters the groove, then the upper shell and the lower shell are mounted, the buckle is clamped in the clamping groove, and the elastic piece is slightly compressed, so that the upright post and the elastic piece can be clamped in the clamping groove. The foam and the upper shell are tightly pressed by the LCD module through the restoring force of the elastic piece, so that the whole LCD module is assembled under the condition that no glue or double-sided adhesive tape is used, the LCD module can be randomly disassembled without being damaged if the LCD module has problems and needs to be reworked, and the LCD module is particularly convenient to disassemble and rework.

The application discloses a kind of automobile seat slide rail structures, it is related to the technical field of automobile accessories, it includes outer rail, inner rail, rocker mechanism and guiding limiting mechanism;Rocker mechanism includes the rod body being arranged in inner rail, the proximal end of rod body is connected with crank after extending out of inner rail, the distal end of rod body is provided with locking plate and torsion spring;The side of locking plate is connected with rod body, the other side of locking plate is provided with several clamping teeth;The side wall of outer rail is provided with locking hole compatible with clamping tooth;Guiding limiting mechanism includes fixed plate, limiting pin and limiting block;Fixed plate is arranged in inner rail and below rod body, the middle part of fixed plate is provided with guiding slot along the axial direction of inner rail;The lower end of limiting pin is connected with the inner bottom wall of outer rail, the upper end of limiting pin is passed through guiding slot and then abuts on rod body;Limiting block is provided with through hole for rod body to pass through, and the upper end of limiting block is connected with inner rail, the lower end of limiting block is connected with fixed plate;Limiting pin and limiting block are made of rubber material.

The invention provides an anti-extrusion cable and a cable connection structure, and relates to the technical field of cables.The anti-extrusion cable comprises a cable body, the cable body comprises a middle sheath, a shielding layer, a plurality of guide cores, a filling layer and an inner insulating sheath, the guide cores are evenly arranged on the inner side of the middle sheath, and the shielding layer is arranged on the inner side of the middle sheath; the guide cores, the inner insulating sheaths and the shielding layers are arranged in a one-to-one correspondence manner, the inner insulating sheaths tightly wrap the outer sides of the guide cores, the shielding layers tightly wrap the outer sides of the inner insulating sheaths, and the filling layers are filled in gaps between the shielding layers and the middle sheath; a middle sheath of a cable main body is made of chloroprene rubber materials and provides stable support for an internal structure, a spiral spring steel wire fixedly sleeved on the outer side of the middle sheath can effectively disperse external extrusion acting force and improve the overall anti-extrusion performance of the cable, and a silicone rubber layer coated on the outer side of the steel wire is tightly attached to the steel wire and extends to the outer wall of the middle sheath to be in hot melting connection, so that the service life of the cable is prolonged. And extrusion impact can be buffered in an auxiliary manner.

The invention provides a damping liquid silicone rubber material which is obtained by curing a damping liquid silicone rubber raw material composition, and also provides damping liquid silicone rubber and a preparation method thereof. The hardness and strength of the liquid silicone rubber material are improved through filling of the MQ silicon resin and the high-white carbon black, meanwhile, a large number of interface areas are formed by the nano-particles and a matrix, microcosmic slippage of the interfaces is generated under the action of dynamic stress, mechanical energy is converted into heat energy through friction and viscous effects between the interfaces and molecular chains, and damping is improved; according to the invention, by introducing methyl-terminated vinyl silicone oil, a silicone rubber chain forms a large number of suspension chain structures, energy dissipation is enhanced, hydrogen-containing chain extension is carried out at a use end, a main polymer has a longer free molecular chain segment to generate a friction effect, and the damping performance of the liquid silicone rubber material is further improved. Experimental results show that the liquid silicone rubber provided by the invention has excellent damping, mechanical and other properties under high hardness.

The invention relates to a method for preparing rubber powder by adopting a high-pressure water jet composite method. The method comprises the following preparation steps: S1, crushing rubber particles; s2, performing impact type filtration; s3, internal circulation of the rubber powder liquid; and S4, solid-phase separation and recovery. The cavitation effect and the high-speed impact effect in ultrahigh-pressure water jet can enable a rubber material to achieve the low-temperature crushing effect at the normal temperature, so that the purpose of preparing fine rubber powder can be achieved at the normal temperature in a low-energy-consumption, low-cost and environment-friendly manner; meanwhile, the actual filtering area of the filter cartridge is increased to the maximum extent, and the filtering effect and efficiency are improved to a great extent.

The invention relates to the technical field of rubber materials, in particular to a high-strength and low-dielectric-loss epoxy resin composite material and a preparation method thereof. The epoxy resin composite material is prepared from the following raw materials in parts by weight: 100 parts of modified epoxy resin, 12 to 18 parts of cyanate ester resin, 40 to 50 parts of aramid fiber, 10 to 15 parts of filler, 15 to 25 parts of flexibilizer, 1 to 6 parts of first curing agent and 1 to 2 parts of accelerant. The epoxy resin composite material with high strength and low dielectric loss has the advantages of high strength, good impact resistance, high breakdown strength, low dielectric constant and low dielectric loss. The requirements of high-voltage power transmission equipment insulation parts, high-frequency circuit substrates, spacecraft lightweight structural members and the like on the fields with strict requirements on mechanical strength and dielectric properties can be met; and the preparation method is simple and controllable, the production cost is relatively low, and large-scale production can be realized.

The invention discloses a high-resilience rubber material and a preparation method thereof, and belongs to the technical field of rubber preparation. The preparation method comprises the following steps: carrying out heat treatment on the raw natural rubber, mixing with the micro-nano spherical hollow powder, carrying out vacuum mixing, mixing the mixed product with the plasticizer and the processing aid, banburying, carrying out open milling on the banburying product, adding the vulcanizing agent, extruding, and finally vulcanizing. The micro-nano spherical hollow powder is introduced in the rubber production process, the targeted preparation method is designed, the high-resilience rubber material is obtained, the resilience performance of rubber is improved, and the preparation method is simple and suitable for industrial production.

The invention discloses a rubber numerical control electric heating cycle vulcanizing machine and a control system, and relates to the technical field of rubber processing equipment, a temperature distribution image of a vulcanizing cavity is collected in real time through a thermal imager, regions are divided, the temperature interval of each region is identified, and the area is calculated. Based on the key temperature interval of the rubber material, constructing a three-stage intelligent regulation and control strategy: dynamically adjusting the heating power and the pressure compensation according to the temperature interval distribution in the heating stage; in the constant temperature stage, heating power and pressure parameters are optimized through temperature stability; in the cooling stage, pressure dynamic compensation is implemented according to the cooling rate. The system uses RFID to record technological parameters such as temperature and time of each stage of vulcanization, and realizes classified storage and regular quality detection of products through an intelligent warehouse management system. Through multi-parameter cooperative control, the energy consumption is remarkably reduced, the vulcanization uniformity of the rubber product is improved, the defective rate is reduced, and an efficient and energy-saving solution is provided for the rubber processing industry.

The invention relates to the technical field of laser welding, and discloses laser welding equipment for pipeline welding, which comprises a workbench, a fixing mechanism is mounted on one side of the outer wall of the workbench and used for fixing to-be-welded pipelines with different diameters, and a cooling mechanism is mounted at one end of the interior of the fixing mechanism and used for cooling the to-be-welded pipelines with different diameters. The cooling mechanism is used for rapidly cooling a welded pipeline, and the output end of the cooling mechanism communicates with an air curtain mechanism which is used for forming air curtain protection for equipment. A unique gear-rack transmission design is adopted by the fixing mechanism, motor driving is matched, an operation instruction can be quickly responded, and when facing to-be-welded pipelines with different diameters, a plurality of racks work cooperatively to form an annular clamping structure to adapt to the outline of the pipelines, and it is ensured that the pipelines are kept stable in the whole welding process. And the internal rubber material buffers the clamping force, the pipeline is prevented from being damaged, displacement deviation in the welding process is effectively prevented, and a solid foundation is laid for subsequent welding operation.

The invention discloses a preparation method of a rubber waterstop material with a low compression set rate, which comprises the following steps: firstly, carrying out blending reaction on hydroxyl silicone oil and boric acid to obtain liquid polyborosiloxane; the preparation method comprises the following steps: adding liquid polyborosiloxane and natural rubber into an internal mixer according to a ratio, and carrying out internal mixing to obtain a mixture; adding zinc oxide, an anti-aging agent, stearic acid and an anti-tearing agent into the obtained mixture, and continuously mixing; continuously adding kaolin talcum powder, calcium carbonate, calcium oxide, white carbon black, N550, N330 and KH550, and internally mixing again to obtain a preform; adding a vulcanization accelerator and a vulcanizing agent into the preform, and continuously mixing to obtain a rubber material to be vulcanized; and vulcanizing and forming the rubber material to be vulcanized to prepare the rubber water-stop belt material with the low compression set rate. According to the invention, the compression set rate of the rubber material can be reduced while the tensile strength, elongation, tear resistance and other properties of the rubber are not sacrificed, so that the product performance is enhanced.