877results about How to "Easy to stretch" patented technology

The invention relates to the technical field of silicone rubber, and discloses a preparation method of a modified silicone rubber elastomer, the modified silicone rubber elastomer comprises 100 parts by weight of methyl vinyl silicone rubber, 5-25 parts by weight of organosilicon grafted cellulose microcrystalline, 12-20 parts by weight of white carbon black, 1.7-2.4 parts by weight of a vulcanizing agent, 2.6-4.2 parts by weight of a cross-linking agent, and 1.5-2 parts by weight of an auxiliary agent, 1.2 to 1.6 parts by weight of an anti-aging agent; the organic silicon grafted cellulose microcrystal contains a siloxane structure and has good compatibility with the methyl vinyl silicone rubber, and in the high-temperature vulcanization process, alkenyl of the organic silicon grafted cellulose microcrystal can be subjected to a cross-linking reaction with the methyl vinyl silicone rubber and triallyl isocyanurate, so that the organic silicon grafted cellulose microcrystal can be used for curing the methyl vinyl silicone rubber and the triallyl isocyanurate. The interface bonding strength between the cellulose microcrystal and the methyl vinyl silicone rubber is enhanced, so that the silicone rubber elastomer shows higher tensile property, hardness and tearing strength.

The invention provides a flexible nano thermal insulation material and a preparation method and application thereof, and the preparation method of the flexible nano thermal insulation material comprises the following steps: mixing low-heat-conductivity-coefficient powder, a fibrosis adhesive and an optional additive, carrying out ball milling to obtain floccule, and rolling the floccule into a film-shaped flexible nano thermal insulation material. According to the invention, the low-thermal-conductivity powder is cross-linked, fixed and rolled to form the flexible film by using the fibril formed by the fibrillating adhesive, so that the pore structure of the low-thermal-conductivity powder is maintained without introducing the adhesive with high thermal conductivity for forming; therefore, the low heat conductivity coefficient of the powder is kept, and meanwhile, the powder has good processing formability. The prepared flexible nano heat insulation material has excellent flexibility, heat insulation performance and certain tensile and compression performance, and can be widely applied to the fields of aerospace, constructional engineering, shipbuilding, automobile manufacturing and the like.

The invention belongs to the field of steel wire rope straightening equipment, and provides straightening equipment for steel wire rope machining. The straightening equipment comprises a workbench, the workbench is fixedly connected with a guide rail, the guide rail is slidably connected with a moving assembly, the moving assembly can horizontally move along the guide rail, and the two ends of the moving assembly are fixedly connected with second motors; an output shaft of the second motor is fixedly connected with an electric pull rod, and the telescopic end of the electric pull rod is fixedly connected with a fixing sleeve capable of fixing the end of the steel wire rope. When the steel wire rope moves along with the sliding frame, all the first electric push rods elastically limit the steel wire rope together, so that the bent part of the steel wire rope is straightened; and then, all straightening mechanisms in the frame conduct secondary straightening on the steel wire rope, all second electric push rods are started, and all the second electric push rods jointly drive second limiting rollers connected with the second electric push rods to straighten the steel wire rope.

The invention provides a staged release type rigid-flexible composite nerve conduit as well as a preparation method and application thereof. A polymer fiber membrane with a double-layer nanofiber membrane structure is used as a tube wall, multi-section hydrogel comprising short-section hydrogel containing anti-inflammatory substances and long-section hydrogel containing growth factors is used as an inner core, and bioactive substance particles containing the growth factors are deposited on the inner wall of the polymer fiber membrane. The staged release type rigid-flexible composite nerve conduit is obtained. The composite nerve conduit provided by the invention is a rigid-flexible composite nerve conduit capable of controllably delivering anti-inflammatory substances and growth factors in time and space to meet the requirements of each stage of injury, and is combined with multiple induction signals such as a topological structure, chemotactic induction and the like to regulate and control the microenvironment of each stage after spinal cord injury and promote subsequent functional recovery.

The invention relates to an offshore pile foundation construction platform, in particular to an offshore pile foundation operation assembly platform and method. Comprising a pile top supporting structure, a working platform and an inter-pile connecting structure, and the pile top supporting structure is detachably fixed to the top of a pipe pile; a hole allowing a pipe pile to penetrate through is formed in the middle of the operation platform, and the operation platform is vertically and adjustably connected to the pile top supporting structure through a connecting structure. The inter-pile connecting structure is a telescopic structure which is folded and placed in the working platform before working construction and extends outwards to form a channel for connecting the working platform on the two adjacent pipe piles during working construction. The assembling platform is simple in structure and convenient to use, not only can a platform structure be formed on the pipe pile, but also the adjacent working platforms can be connected, the whole assembling platform is very easy to assemble and disassemble, and construction is easy.

The utility model relates to a contact distribution force information detection system for an automobile crash dummy model. The system comprises a dummy model, and flexible touch sensors arranged at the head, neck, chest, upper limbs, hip, lower limbs and / or feet of the dummy model. The flexible touch sensor comprises an upper electrode layer, a lower electrode layer, an anti-tear flexible plastic packaging layer and an ion fiber layer placed between the upper electrode layer and the lower electrode layer. And the tear-resistant flexible plastic package layer wraps and packages the upper and lower electrode layers and the ion fiber layer. The whole body of the crash test model dummy is full of the flexible touch sensors, contact distribution force information of the crash test model dummy can be directly obtained, the defect that the current crash dummy lacks the contact distribution force information is overcome, and the crash test model dummy is low in cost and easy to operate.

The invention discloses a flexible multi-channel multi-layer electrode, a preparation method and an electromyographic signal collector. The preparation method of the flexible multi-channel multi-layer electrode comprises the following steps: etching a silicon wafer, and cleaning the silicon wafer; preparing an AgNW / NG solution as a conductive material, and preparing an elastic substrate by adopting SEBS powder; a signal acquisition layer is prepared from a silicon wafer, a conductive material and SEBS powder, a wire shielding layer is prepared from the silicon wafer and the SEBS powder, and a packaging layer and an interference signal shielding layer are prepared from the silicon wafer, the conductive material and the SEBS powder; the packaging layer, the interference signal shielding layer, the signal acquisition layer and the wire shielding layer are fixedly assembled in sequence from top to bottom, and are connected with the flexible printed circuit board through the signal acquisition layer. The invention aims to solve the problems of high electrode impedance value, low signal-to-noise ratio and poor stretchability of a multi-channel electrode.

The invention relates to the technical field of palladium nanoparticle preparation, liquid drainage long and thin grooves are uniformly formed in the edge end of a built-in rotary drum at equal angles in the vertical direction of the built-in rotary drum, centrifugal telescopic filter cloth is arranged on the inner side of the built-in rotary drum, a balance weight chassis is arranged at the bottom end of the centrifugal telescopic filter cloth, and an edge ring is mounted at the edge end of the balance weight chassis; a plurality of groups of elastic steel wires are connected to the edge of the centrifugal telescopic filter cloth in an embedded manner, so that the effective usable area of the centrifugal telescopic filter cloth is automatically expanded according to the adding amount of actual precipitates, the centrifugal telescopic filter cloth is convenient to adaptively adjust, and the use efficiency of the centrifugal telescopic filter cloth is improved; meanwhile, the centrifugal telescopic filter cloth is used for driving the folding filter cloth to be stretched in the top ring box, so that the filter area of the centrifugal telescopic filter cloth can be automatically expanded when a large amount of sediment materials exist, flexible adjustment is performed according to the actual treatment amount of the sediment materials, convenience is provided for the subsequent cleaning process while the centrifugal separation effect is guaranteed, and the working efficiency is improved. And the centrifugal separation process is more convenient.

The crawler-type emulsion lifting platform for the underground coal mine comprises a crawler walking supporting mechanism, a hydraulic control system and a lifting platform body, the crawler-type emulsion lifting platform body drives an emulsion motor to rotate and work through high-pressure emulsion from an emulsion pump station, and crawler walking and supporting stand column stretching and retracting are achieved; therefore, stable and reliable walking and supporting functions are provided; a first hydraulic manifold block and a second hydraulic manifold block in the hydraulic control system work cooperatively, so that a platform lifting hydraulic cylinder can accurately control the lifting platform to ascend and descend, and a hydraulic connector for a handheld emulsion tool and a hydraulic connector for a booster pump are arranged on the second hydraulic manifold block. Various operations such as drilling, anchor rod (cable) mounting, tensioning, dismounting and cutting can be conveniently carried out on two sides and a top plate of a coal mining roadway, and meanwhile, fully-mechanized mining equipment of a coal mining working face can be maintained. The device has the effects that the working efficiency is improved, and the labor intensity of operators is reduced.

The invention discloses a polyurethane flexible foam material as well as a preparation method and application thereof, the raw materials of the material comprise a component A and a component B. The component A comprises the following raw materials: polyether polyol, polymer polyol, a chain extender, a foam stabilizer, a foaming catalyst and a foaming agent; the component B is prepared from the following component raw materials: MDI (methylene diphenyl diisocyanate), CO2-based polyether polyol and a polymerization inhibitor. The environment-friendly CO2-based polyether polyol is used for replacing polyether polyol or polyester polyol to modify isocyanate, so that the polyurethane flexible foam material with better stretching and tearing properties is obtained, and the polyurethane flexible foam material has higher rebound resilience and supporting property, good processability and comfortable hand feeling, and can be applied to shoe materials, automobile seat sponges and the like.

The invention relates to the technical field of non-ferrous metal wire drawing, in particular to a wire drawing device for copper wire machining. The wire drawing device comprises a base, a processing cavity is formed in the top of the base, a pair of wire winding mechanisms arranged at intervals is arranged on the inner bottom wall of the processing cavity, and a cleaning mechanism, a dirt removing mechanism and a wire drawing mechanism are sequentially arranged between the two wire winding mechanisms; according to the wiredrawing device for copper wire processing, the cleaning bin is used for removing an oxide layer on the surface of a thick copper wire, the heat dissipation interlayer can absorb heat generated in the wiredrawing process of the wiredrawing die, and the heat dissipation interlayer can convey heated cooling liquid into the dirt removal box; the decontaminating liquid in the decontaminating box is used for washing away the residual chemical cleaning agent on the surface of the thick copper wire after being heated, the decontaminating box can convey the cooled decontaminating liquid back to the heat dissipation interlayer so as to cool the wire drawing die, and the decontaminating liquid (namely hot water) retained on the surface of the thick copper wire can lubricate the thick copper wire when passing through the wire drawing die.

The invention belongs to the technical field of high polymer materials, and discloses a force-induced unclonable label as well as a preparation method and application thereof. Electronegative monodisperse polymer nanospheres are prepared through emulsion polymerization, and after being swelled by using an isooctyl acrylate monomer, the nanospheres, acrylamide and ethylene glycol dimethacrylate are mixed, polymerized and photocured to form the structural color hydrogel film. The hollow-out steel template is used for mechanical force pressing, randomly-distributed microcrystalline light spots are obtained after a solvent is volatilized, the optical property of force-induced discoloration is displayed, and rapid and effective identification can be achieved. Compared with a traditional hydrogel anti-counterfeit label, the label has higher stability and reusability, does not need a solvent, and is environmentally friendly and practical. The technology not only realizes high-level anti-counterfeiting and encryption, but also has the potential of large-scale production.

The invention discloses electric leakage protection power line welding equipment which comprises a base and a movable shell, the movable shell slides in the horizontal direction under thrust, the inner surface of the movable shell is slidably connected with an extrusion plate, the bottom of the movable shell is slidably connected with a wire placement plate, and the bottom of the wire placement plate is fixedly connected with the base. A protection assembly is fixedly connected to the position, close to the wire placement plate, of the base, a welding assembly is slidably connected to the position, away from the wire placement plate, of the base, a processing assembly is rotatably connected to the side, close to the movable shell, of the welding assembly, and a mounting assembly is fixedly connected to the inner surface of the welding assembly. According to the electric leakage protection power line welding equipment, the alignment accuracy of a power line can be conveniently kept, the welding assembly is not prone to repeated welding when welding the power line, the processing assembly adsorbs and purifies peculiar smells generated during welding, and the situation that welding slag splashes around the equipment, and the cleaning difficulty is increased is prevented.

The invention discloses a preparation method and application of collagen microspheres, and belongs to the technical field of genetic engineering. Two histidines are respectively inserted into the N end and the C end of the collagen B-domain amino acid sequence, the high polymerization self-assembly of the collagen is promoted by utilizing the metal chelating effect to form a three-dimensional network structure, and a histidine is further inserted into the middle of the collagen, so that the three-dimensional morphology transformation of the collagen assembly is realized, and a loose and porous microsphere structure is formed. Experiments prove that by controlling the number and position of His residues in the collagen B-domain amino acid sequence expressed by microbial cells, the three-dimensional morphology of collagen can be controlled, and the collagen microspheres are formed; the prepared collagen microspheres can significantly promote cell adhesion, extension and migration.

The invention relates to the technical field of high polymer materials, and discloses flame-retardant and weather-resistant rare earth butyl isoprene rubber and a preparation method thereof.The preparation method includes the steps that rare earth butyl isoprene rubber, calcium carbonate, modified silane, polyethylene, sulfur-containing modified polyurethane and an antioxidant 626 are added into a stirrer to be evenly mixed, melted and cooled, and the flame-retardant and weather-resistant rare earth butyl isoprene rubber is obtained; the flame-retardant and weather-resistant rare earth butyl isoprene rubber is obtained. In the melting process, isocyanate-terminated in the sulfur-containing modified polyurethane reacts with hydroxyl in modified silane, cross-linking is generated between the isocyanate-terminated in the sulfur-containing modified polyurethane and the hydroxyl in the modified silane, the isocyanate-terminated in the sulfur-containing modified polyurethane and the hydroxyl in the modified silane are wound with rare earth butyl isoprene rubber and polyethylene, so that the isocyanate-terminated in the sulfur-containing modified polyurethane and the hydroxyl in the modified silane are connected more tightly, and the tensile property is improved; a sulfur element, a phosphorus element, a silicon element and a nitrogen element in the sulfur-containing modified polyurethane and the modified silane have good flame-retardant effects and jointly form a flame-retardant system; and meanwhile, the rare earth butyl isoprene rubber disclosed by the invention also has relatively good weather resistance.

The invention relates to the technical field of colored tire rubber, and particularly discloses an anti-tarnishing rubber composition for a colored tire and a preparation method of the anti-tarnishing rubber composition. According to the anti-discoloration rubber composition for the colored tire, the modified colored white carbon black is firstly prepared, then the solution polymerized styrene-butadiene rubber, the natural rubber and the ethylene propylene diene monomer are used as rubber matrixes, and the modified colored white carbon black is added for coloring and reinforcing; and adding auxiliary agents such as polydicyclopentadiene resin, titanium dioxide, a YDH-151 silane coupling agent, zinc oxide, stearic acid, sulfur, a TBBS accelerator, protective wax, an AFS / LG anti-aging agent, an antistatic agent and the like to prepare the anti-tarnishing rubber composition for the colored tire. The anti-discoloration rubber composition for the colored tire has the advantages of being stable in color, resistant to aging, good in stretchability, high in wear resistance and high in weather resistance.

The invention discloses a reinforced and toughened composite polyethylene material for plastic pipe processing and a preparation method thereof, and belongs to the technical field of polyethylene material processing. The low-density polyethylene composite material comprises the following components in parts by weight: 90-100 parts of low-density polyethylene, 8-12 parts of glycidyl methacrylate, 5-6 parts of a flame retardant, 15-22 parts of a composite filler, 20-30 parts of a reinforced elastomer, 0.5-0.8 part of an initiator and 3-5 parts of an auxiliary additive, a low-density polyethylene matrix is reinforced by a strong elastomer, a composite filler, a flame retardant and glycidyl methacrylate, so that the tensile property and impact toughness of the composite polyethylene material are effectively improved, and the flame retardance and aging resistance of the material are also improved.

The utility model relates to the technical field of branch pipes, and discloses a branch pipe heat preservation jacket which comprises a heat preservation jacket body, the heat preservation jacket body is composed of a front jacket body and a rear jacket body, a first clamping cavity is formed in the inner side of the front jacket body, a second clamping cavity is formed in the inner side of the rear jacket body, and the first clamping cavity and the second clamping cavity form a circular cavity. One side of the front sheath is provided with a first protruding part and a second protruding part. According to the utility model, through the arrangement of the first protruding part and the second protruding part, the first protruding part and the second protruding part can be inserted into the first concave part and the second concave part respectively when the front sheath is attached to the rear sheath, so that an insertion mechanism is formed at the joint of the front sheath and the rear sheath, and the anti-shearing force or tensile force is effectively increased; meanwhile, the glue coating area of the inner sides of the front sheath and the rear sheath is increased, the reliability of the heat preservation sleeve main body is improved, and the condensation prevention and water dripping prevention effects of the heat preservation sleeve main body are improved.

The invention discloses a high-titanium nickel niobium-based alloy and a preparation method thereof, the method comprises the following steps: step 1, niobium alloy powder is prepared and subjected to vacuum drying, the atom proportion of Nb powder in the niobium alloy powder is 60%-75%, the atom proportion of Ti powder in the niobium alloy powder is 15%-25%, the atom proportion of Ni powder in the niobium alloy powder is 6%-12.5%, and the balance is refractory metal element powder; 2, the niobium alloy powder is made into a high-titanium-nickel-niobium-based alloy blank through laser additive manufacturing equipment; and 3, the high-titanium-nickel-niobium-based alloy blank is put into a high-temperature furnace with the high vacuum degree, after the air pressure in the furnace reaches 1 * 10 <-3 > Pa to 5 * 10 <-3 > Pa through a mechanical pump and a diffusion pump, the temperature is increased to 1000-1200 DEG C from the room temperature at the temperature increasing rate of 10 DEG C / min, annealing is conducted for 1-10 h, and after furnace cooling is conducted, the high-titanium-nickel-niobium-based alloy is obtained and has the high melting point and the excellent mechanical property.

The invention relates to the technical field of welding testing, in particular to a connector tensile test clamping device which comprises a supporting seat, two clamping bases are slidably connected to the interior of the supporting seat, clamping frames are fixedly connected to the tops of the clamping bases, two movable plates are arranged between the two clamping bases, and the two movable plates are fixedly connected to the supporting seat. The movable plates are slidably connected to the supporting base, arc-shaped grooves are formed in the tops of the movable plates, and two air springs are fixedly installed between the clamping frame and the corresponding movable plates. According to the invention, elastic abdication is carried out through compression of the gas spring in the stretching process, the pressure of a stretching test on conveying equipment is reduced, and when a joint of the pipeline generates a crack in the stretching test, liquid in the pipeline flows out along the crack, so that a tester can visually observe the change of the joint, and the test efficiency is improved. Therefore, the accuracy of test results is improved.

The invention relates to a wearable dynamic and static blood supply monitoring device and method.The device comprises a front-end testing module and a rear-end processing module, the front-end testing module is connected with the rear-end processing module through a front-end and rear-end connecting line, and the front-end testing module covers the skin of a patient; the front-end processing module comprises a pressure layer and a light transmitting and receiving layer, a pressure sensor is arranged on the pressure layer, a light emitting diode and a photoelectric detector are arranged on the light transmitting and receiving layer, the pressure layer is connected with the light transmitting and receiving layer through a front-end internal connecting wire, and packages are arranged on the two surfaces of the pressure layer and the light transmitting and receiving layer. The rear-end processing module comprises a signal collecting, processing and transmitting layer, a signal collecting, processing and transmitting part is arranged on the signal collecting, processing and transmitting layer, and packages are arranged on the two faces of the signal collecting, processing and transmitting layer. Compared with the prior art, non-invasive real-time monitoring of the skin blood supply state is achieved, and the thrombus type can be judged in time.

The invention discloses the technical field of adhesives, and particularly relates to a double-conduction adhesive which is prepared by the following steps: adding polyacrylic acid (PAA) and polyacrylamide (PAM) into deionized water, and stirring at room temperature to form a transparent solution, namely the double-conduction adhesive (c-PAA-PAM). The double-conduction binder prepared by the invention has excellent bonding performance and electrolyte wettability.

The invention relates to the technical field of cable erection, and particularly discloses a cable erection mechanism for a communication machine room, which comprises a mounting platform, a protective cover is lapped on the top of the mounting platform, a mounting box is fixedly connected to the surface of the protective cover, an air pump is fixedly connected to the inner wall of the mounting box, and an air suction pipe is mounted at the input end of the air pump; an air outlet pipe is mounted at the output end of the air pump; through the arrangement of the mounting platform, the protective cover, the air pump, the exhaust pipe, a second connecting pipe, a sleeving frame and fan blades, during use, the input end of the air pump sucks in external air through the exhaust pipe, the output end of the air pump exhausts the air at a high speed through an air outlet pipe, and the second connecting pipe quickly conveys the air into the sleeving frame; the fan blades in the sleeving frame rotate, wind energy is conveyed into the protective cover in a large range through rotation of the fan blades, and therefore the cable protected in the protective cover is rapidly cooled and cooled, and the effect of uniform cooling and cooling of the cable is achieved.

The utility model discloses an electrified cleaning device for a railway overhead line system insulator. The electrified cleaning device comprises a handheld rod, the adjusting assembly is arranged on one side of the handheld rod; the adjusting assembly comprises a fixing frame, a screw rod, a handle, a folding frame and a mounting plate; and one end of the handheld rod is fixedly connected with a fixing frame. The electrified cleaning device for the railway contact network insulator is provided with a connecting plate, one end of a water conveying pipe can be fastened and connected through a screw groove, a handle can rotate in a fixing frame through a screw rod by rotating the handle, the screw rod can pull the fixing frame at the other end to adjust the distance, and the cleaning effect is improved. According to the cleaning device for the insulator, a folding frame can be conveniently stretched out and drawn back, then the folding frame can push or pull a mounting plate to move, the mounting plate can carry nozzles on the two sides to adjust the distance, then the cleaning range can be adjusted according to needs when the insulator is cleaned, and the practicability of the cleaning device is improved.

The invention discloses a preparation method of a modified asphalt tire-free waterproof coiled material, which is characterized by comprising the following steps: taking the following raw materials in percentage by mass: 41-43% of asphalt, 9-12% of softening oil, 10-11% of tire rubber powder, 1-3% of SBS (Styrene Butadiene Styrene), 3-4% of SBR (Styrene Butadiene Styrene), 1-2% of basalt fiber and 28-34% of filler, mixing and stirring the asphalt and the softening oil, heating to 190-195 DEG C, adding the tire rubber powder, heating to 190-195 DEG C, and stirring for 20-30 minutes, thereby obtaining the modified asphalt tire-free waterproof coiled material. Cooling to 185-190 DEG C, adding SBS and SBR, adding basalt fiber, carrying out heat preservation and stirring, adding a filler, and stirring and mixing to obtain an asphalt composition; and coating one surface of the film with the asphalt composition, and then covering a layer of film, thereby obtaining the modified asphalt tire-free waterproof coiled material. The prepared modified asphalt tire-free waterproof coiled material is good in performance and suitable for buildings to resist external rainwater erosion, prevent underground water leakage and the like.

The utility model discloses a walking swinging telescopic mechanism for tunnel construction ultrasonic detection, which belongs to the technical field of tunnel ultrasonic detection equipment and specifically structurally comprises a walking door frame, an electric walking mechanism, an arc-shaped synchronous driving transmission belt and a telescopic cylinder. An arc-shaped rail is installed on the rear side of the walking door frame, the arc-shaped rail is consistent with the inner arch face of the tunnel, the two ends of the arc-shaped rail extend to be close to the ground, the arc-shaped rail is connected to a sliding plate through a sliding block, and an arc-shaped synchronous driving belt is connected to the inner side of the sliding plate. According to the utility model, the detection position and orientation are accurate and reliable, the detection result is more accurate, the radial swing angle adjustment can always ensure the measurement perpendicular to the tangent line of the detection point, and the telescopic cylinder controls the telescoping through the measurement accuracy, so that the telescoping function is realized; and a certain protection effect on the probe is achieved.

The utility model relates to the technical field of bedding supplies, in particular to a three-dimensional (3D) air cushion pillow with height and hardness adjusted through inflation. The air cushion pillow is divided into a cervical vertebra bearing area and a head relaxing area, the head relaxing area is divided into a brain nest area and a peripheral supporting area, and the air cushion pillow further comprises an inflation adjusting device. According to the utility model, the three-dimensional partition design is adopted, the pillow effectively fits the human skeleton curve according to the ergonomic design, the height of the cervical vertebra bearing area is adjusted through the inflation adjusting device, uniform support is provided for the cervical vertebra, relaxation and soothing of the cervical vertebra are promoted, the pressure and fatigue of the neck are reduced, and the stretching of the cervical vertebra is realized; the cervical vertebra problem is effectively corrected. Meanwhile, the pillowcase of the air cushion pillow is made of different fabrics according to areas, the pillow inner is made of 3D materials and integrally formed through warp knitting, the upper face and the lower face are provided with meshes, the air permeability and comfort are higher, and the surface of the air cushion pillow is kept comfortable and dry through air circulation.

The invention relates to the technical field of glass fiber cloth, and discloses glass fiber cloth which is prepared by twisting glass fiber monofilaments and carbon fiber monofilaments into mixed yarns, weaving the mixed yarns into a glass fiber fabric and then respectively dipping the glass fiber fabric into a resin binder added with filler and a silane solution, and also discloses a preparation method of the glass fiber cloth. Comprising the following steps: S1, twisting glass fiber monofilaments and carbon fiber monofilaments into mixed yarns, and weaving the mixed yarns into a glass fiber fabric; s2, adding a silane coupling agent into an acetone solvent; s3, adding a filler into the silane solution; s4, adding the modified filler into a resin binder to obtain a modified resin binder; s5, sequentially soaking the glass fiber fabric in a silane solution and a modified resin binder; s6, drying the glass fiber cloth, pressurizing and exhausting; and then curing is carried out. The glass fiber cloth prepared by the invention has excellent tensile property, bending property and impact property, and is good in wear resistance.

The invention relates to the technical field of sealing element detection, in particular to an engine rubber sealing element detection device which comprises a bottom plate, a rotating seat is rotatably mounted in the middle of the upper end face of the bottom plate through a motor, a rotating seat is annularly and fixedly mounted on the outer edge of the upper portion of the rotating seat, and a placement rod is rotatably mounted in the middle of the rotating seat through an electric sliding block. When the sealing element is detected, the placing rod is sleeved with the sealing element, the rubber sealing element can be circumferentially stretched from inside to outside through the arrangement of the pulling plate, then the elasticity in the rubber sealing element is detected, the clamped rubber sealing element can be pulled outwards in the radial direction through the rotation of the rotating ring, and meanwhile after the upper end and the lower end of the rubber sealing element are clamped by the clamping plates, the rubber sealing element can be detected. The upper clamping plate and the lower clamping plate are far away from each other, and the rubber sealing element can be axially stretched, so that the rubber sealing element can be stretched in radial and axial modes while the elasticity of the rubber sealing element is detected by pulling, and the elasticity of the rubber sealing element is detected.

The utility model discloses a stretching and fixing device for denim processing, which relates to the field of denim processing and comprises a fixed bottom plate, a receiving frame, a heating box, a pressing frame and a feeding frame are arranged on the outer surface of the upper end of the fixed bottom plate, the receiving frame is positioned on one side of the heating box, and the heating box is positioned on one side of the pressing frame. According to the stretching and fixing device for denim processing, when the arranged heating box is used, heat of the electric heating pipe can be blown to stretched denim through the air blower, the denim can be heated and softened when the heating box is used, the denim can be conveniently stretched to remove wrinkles, and the denim processing quality is improved. When a first electric push rod is used, denim can be fixed and pressed through a first pressing plate and a second pressing plate on a second electric push rod, then the denim can be wound through a collecting frame, and the effect of stretching the denim is achieved between the collecting frame and a pressing frame support; and the stretching tensity of the denim can be conveniently adjusted by controlling the receiving force of the receiving frame.