51results about How to "High surface friction coefficient" patented technology

The invention relates to the field of sensors, and discloses a preparation method of a silver nanowire modified flexible fiber sensor electrode. A flexible conductive fiber is prepared with a solution mixing method, wherein SBS (styrene-butadiene-styrene) is taken a as flexible substrate, poly 3,4-ethylenedioxythiophene-polystyrene sulfonate-graphene is taken as a conductive material, the electrode is modified with a silver nanowire, and the silver nanowire modified flexible fiber sensor electrode containing SBS/graphene/poly 3,4-ethylenedioxythiophene-polystyrene sulfonate is obtained. The sensor electrode can be applied in the fields of medical biological monitoring, environment and hygiene monitoring and the like.

The invention relates to a method for preparing a seepage brick by coal ash. The coal ash, potash feldspar and kaolin are mixed and put into a ball mill for wet grinding to be even, so as to form mixed slurry; the mixed slurry is dried into powder material and then pressed into green body; the pressed green body is sintered and cooled naturally and then is put into an edge runner mill to be smashed into aggregate; waste glass is put into the ball mill for dry grinding, and then bentonite is added and grinding is continued, so as to form mixed material; arabic gum solution is added into the mixed material to form mixed slurry, and then the aggregate and the mixed slurry are stirred to be even, filtered by pumping by a circulation water vacuum pump and then put into a steel mould to be pressed into a green body; and the pressed green body is dried and sintered, cooled naturally and then taken out, thus obtaining the coal ash seepage brick. The invention takes industrial waste coal ash and waste glass powder as raw materials, which is beneficial for saving natural resources and reducing production cost; meanwhile the raw materials are sintered at high temperature, no harmful gas is produced in sintering except gas given off by the raw materials, and pollution of waste gas towards environment is reduced.

The invention relates to a galvanizing technology for high-strength fastening pieces. The technology consists of oil removing process, surface pre-treatment process, passivation process, hot-dip zinc process, centrifugation process and cooling process successively. In hot-dip zinc process, high-strength fastening pieces are subject to passivation treatment and then are immersed in zinc liquid at a temperature of 470-480 DEG C. for 40-60 seconds. After being treated with the galvanizing technology, zinc layer thickness of high-strength fastening pieces can meet the corresponding standard and surface hardness and strength thereof will not change basically.

The invention provides a conveying and paper-pressing device used for variable-diameter printing equipment, and relates to the technique field of printing. The device includes a conveying platform, the two sides of the conveying platform are rotationally connected with output shafts, the outer sides of the output shafts are fixedly connected with motors, the middles of the output shafts are fixedly connected with electric-magnetic devices, and the outer sides of the output shafts are provided with limiting grooves. According to the conveying and paper-pressing device used for the variable-diameter printing equipment, the limiting grooves and idler wheels cooperate in use, when the paper-pressing device is used, the output shafts are driven through the motors to rotate, the limiting groovesalso rotate, the positions of the idler wheels are changed, moving blocks are thus driven to stretch out and draw back, the maximum outer diameters of compression rollers are thus changed, the distance between the outer side of each compression roller to the conveying platform is changed, the moving blocks can support rubber rings to make the surface friction coefficients increase, the diametersof the compression rollers are thus changed, paperboards different in thickness are effectively and tightly pressed, the conveying efficiency is improved, and the steady operation of the conveying device is guaranteed.

The invention discloses a fill type rubber rhombic conveying roll with convenient maintenance, comprising a metal roll core. A roll neck and a connecting plate are respectively arranged on both ends of the metal roll core, a plurality of lightening holes are arranged on the connecting plate, a metal roller is supported on the metal roll core through the connecting plate, and a rhombic composite layer is arranged at the outer side of the metal roller. The rhombic composite layer comprises an inside glue layer, a plurality of rhombuses arranged on the inside glue layer and an outside glue layer, wherein the inside glue layer is arranged at the outer side of the metal roller, and the outside glue layer is arranged at the outer side of the rhombuses. A metal rhombic net is arranged on the rhombic composite layer in a matching way. The invention has the advantages that the surface of the conveying roll with the structure is in a rhombic shape, therefore, the surface friction coefficient of the conveying roll is increased, and a conveyor belt cannot slip when running in a rainy day with safe running and machine consumption reduction. After the conveying roll is damaged, the maintenance and dismantling time is short, thereby the normal use of a customer can be ensured, and the maintenance cost of the customer can be reduced.

The invention discloses a device and method for regulating warping of a glass plate. The device comprises overflow down-drawing forming equipment. Glass plate cutting equipment is arranged at the rear end of the overflow down-drawing forming equipment, and a traction roller is arranged between the overflow down-drawing forming equipment and the glass plate cutting equipment. The holding force of the traction roller to a glass plate is increased, in an overflow down-drawing method, the clamping force of the traction roller is greatly affected by friction force between the surface of a boss and the glass plate, the friction coefficient of the surface of the boss is increased, friction force is increased, therefore, the glass plate runs stably through the method of increasing the clamping force, and warping badness caused by back-and-forth running of the glass plate is eliminated.

The invention relates to a nylon fiber with low surface frictional coefficient and improved hydrophobicity and a preparation method thereof. The preparation method comprises mixing modified nylon masterbatch and nylon chips in a mass ratio of (0.5-5):(95-99.5), and performing melt spinning to obtain the nylon fiber with low surface frictional coefficient, wherein the modified nylon masterbatch ismainly composed of, by weight, 37-88.8% of nylon, 10-60% of PDMS (polydimethylsiloxane) and 0.2-3% of POSS with amino side chains and is made by adding the materials proportionally into a mixer, mixing well, transferring to a twin-screw extruder and dicing. The prepared nylon fiber with low surface frictional coefficient and improved hydrophobicity has both dynamic frictional coefficient and stationary frictional coefficient of less than 0.3, has an angle of contact with water being greater than 71 DEG, has good durability, spinnability and good mechanical properties, and has a good application prospect.

The invention discloses a high-wear-resistance rubber friction layer for a folder gluer conveying belt and a preparation method of the rubber friction layer. The friction layer is prepared from raw materials in parts by weight as follows: 60-90 parts of butadiene rubber, 5-20 parts of natural rubber, 5-20 parts of NBR (nitrile butadiene rubber), 40-60 parts of a reinforcing agent, 3-5.5 parts of aprotective agent, 8-12 parts of a vulcanizing agent, 6-9 parts of a vulcanizing aid and 12-16 parts of rubber oil through plastifying, mixing, rolling and vulcanization. Three different types of rubber are combined and can make up defects of one another and play respective advantages, tensile strength, wear resistance and rebound resilience are significantly improved, the surface friction coefficient is increased, and wear resistance is enhanced, so that the overall performance of the folder gluer conveying belt is improved.

The invention discloses an environment-friendly, high-temperature-resistant and anti-shielding industrial control cable, comprising a cable body that includes conductors, an insulating layer, a shielding layer, an inner sheath and an outer sheath. The conductor is arranged inside the cable body; the section of the conductor is circular in shape; a copper foil layer is extruded outside the conductor; the insulating layer is tightly extruded outside the copper foil layers; the gap part between the insulating layer and the copper foil layers is filled with fillers; the shielding layer is tightly extruded outside the insulating layer; a plurality of uniformly arranged drainage cores are arranged inside the shielding layer; a resin bonding layer is arranged between the shielding layer and the insulating layer; a metal coating is arranged on the outer surface of the shielding layer; a reinforcing layer and a refractory layer are arranged outside the metal coating from inside to outside; the inner sheath is arranged on the outer surface of the refractory layer; the outer sheath is tightly extruded on the surface of the inner sheath. The environment-friendly, high-temperature-resistant and anti-shielding industrial control cable has the advantages of reasonable structural design, long service life and good shielding resistance.

The invention relates to modified asphalt, and a production process and application thereof. The production process comprises the following steps of (1) preparing matrix asphalt for standby use; (2) soaking and standing SBS (Styrene Butadiene Styrene); (3) heating the matrix asphalt prepared in the step (1) to 150 to 180 DEG C, and pouring into a premixing tank; (4) pouring the SBS processed in the step (2) and a stabilizer into the premixing tank, and mixing and stirring to disperse uniformly; (5) repeatedly shearing and grinding the matter mixed uniformly in the step (4), and obtaining submicron particles; (6) placing the matter in the step (5) into a sealed container, stirring and developing for more than 30 hours, and controlling the temperature to be 170 to 200 DEG C. According to thescheme, during preparing and mixing, the SBS and the modified asphalt are subjected to physical mixing and chemical crosslinking, and along with the adding of the stabilizer, the SBS and the asphaltare subjected to crosslinking reaction or grafting reaction or other chemical reactions, so that a networked overall structure is formed, and the modified asphalt obtained after treatment is improvedin property and better in heat storage performance.

The invention discloses a wharve of a spun yarn spindle. The spun yarn spindle comprises a spindle blade, wherein the wharve is arranged on the spindle blade; the wharve is connected with a spindle tape driving the spun yarn spindle to rotate; and an anti-slip structure is arranged on the surface where the wharve and the spindle tape are contacted. According to the wharve of the spun yarn spindle, the anti-slip structure can effectively increase the surface friction coefficient of a spindle tape wheel, the skid phenomenon of the spindle tape wheel and the spindle tape is prevented, and the transmission efficiency is improved; and at the same time, the difference of rotating speeds of all spindles of a whole spinning frame can be balanced, and the yarn quality is improved further.

The invention provides a two-component coating type antiskid coating material and a preparation method thereof. The antiskid coating material is composed of a component A solution and a component B solution, wherein the component A solution is composed of the following components by weight: 30-50% of waterborne polyurethane modified epoxy resin, 10-15% of a nano Al2O3 and CaCO3 dispersion liquid, 25-30% of fluff powder, and the balance of water, and the component B solution comprises the following components in percentage by weight: 30-50% of a polyamide curing agent, 1-2% of a defoaming agent, 1-2% of a flatting agent and the balance of water. According to the invention, the two-component anti-skid coating material is coated on the paper slide plate, so that the surface friction coefficient is increased, the anti-skid capability of the paper slide plate is enhanced, and the problems that the paper slide plate is easy to slip in the stacking and carrying processes, cannot be carried and loaded on equipment and the like are solved.

The invention discloses a waterproof skeleton grounding card for communication lightning protection, and relates to the technical field of grounding cards, the waterproof skeleton grounding card comprises a body and a grounding wire, and also comprises a bolt, two sides of the body are provided with locking lugs, and the surface of each locking lug is provided with a threaded hole for the bolt to pass through and to be in threaded connection with the locking lug. The two ends of the grounding wire are connected with a first wiring lug and a second wiring lug respectively, the first wiring lug is fixedly connected with the locking lug through a bolt, a copper woven belt adheres to the inner side of the body, elastic pieces are arranged on the two sides in the body, the two elastic pieces abut against the copper woven belt, and the body comprises a high-temperature-resistant layer, a base material layer and a waterproof layer. According to the grounding card, the elastic sheet is arranged on the inner side of the body, so that the copper woven belt can be prevented from falling off, the firmness between the copper woven belt and the body is improved, and the waterproof layer is arranged on the body, so that the sealing and waterproof capability of the grounding card is improved.

The invention discloses a skin-friendly wood-plastic composite board comprising the following components by mass: 35-50% of wood powder, 25-35% of high density polyethylene, 15-20% of talcum powder, 2-3% of a graft compatibilizer, 1-2% of a composite lubricant, 0.2-0.5% of an antioxidant, and 5-8% of an elastomer material. The end face of the composite board is divided into two layers, a surface layer is an elastomer material, the inner layer is a wood plastic material, and the two layers are firmly fused together. The surface layer has the characteristics of softness, high frictional force and good skin friendliness, people are not easy to slip when walking on the board, and the safety is high; the inner layer provides enough mechanical strength support to ensure long-term stable use of the product.

The invention discloses an aluminum bar constant-distance cutting and transporting mechanism in auxiliary cutting equipment. The aluminum bar constant-distance cutting and transporting mechanism comprises a base; multiple pairs of rails are laid on the base; the aluminum bar constant-distance cutting and transporting mechanism further comprises a reject chute and a traveling bogie set. The middle of the base is provided with a feed opening matched with the rails; the reject chute is arranged under the feed opening; a limiter is arranged in the middle of the rails. The traveling bogie set comprises a power bogie in rolling connection with the rails. The power bogie is mainly composed of an objective table, at least two rows of driving wheels arranged below the objective table and a driving mechanism connected with the driving wheels. The objective table is provided with grasps capable of fixing an aluminum bar. Each driving wheel is provided with a lap recording brake mechanism comprising a lap recorder and a brake portion connected with the driving wheel. By the adoption of the scheme, as the power bogie can accurately stop by reaching the appointed distance through cooperation of the lap recorders and the brake portions, the lengths of cut aluminum bars are uniform, the aluminum bars do not need to be pushed manually, and labor cost is reduced.