41results about How to "Increase the surface friction coefficient" patented technology

The invention discloses a method for coating and modifying surface of inorganic paper making fiber calcium sulfate whisker, which comprises the following steps: 1) mixing the calcium sulfate whisker with a dispersant relative to 1-10% of mass fraction of calcium sulfate whisker, dispersing the calcium sulfate whisker; filtering and drying after treating to obtain the calcium sulfate whisker with high dispersion; 2) measuring water, ethanol, ammoniacal liquor and organosilicon source with set volume ratio, placing the water, ethanol and ammoniacal liquor in a three-mouth flask, performing magnetic stirring, adding a proper amount of surfactant, uniformly mixing for standby; 3) adding the prepared calcium sulfate whisker with high dispersion in the three-mouth flask filled with a mixed solution, uniformly mixing, slowly adding the measured organosilicon source by batches; and 4) stirring and modifying the prepared mixed solution at the temperature of below than 25 DEG C, subsiding for 8-10 hours, filtering, and drying under the temperature of 95% to prepare the modified calcium sulfate whisker.

The invention discloses a metal hip-joint combination handle including a handle body of a femoral bone handle, a neck body of the femoral bone handle, a near-end lining of the femoral bone handle, positioning pins and fixing bolts. With functional and physical design of each part of the metal hip-joint combination handle, the data of the near-end lining of the femoral bone handle is introduced into an electron beam melting and molding device, the titanium alloy power within the device is scanned, melted and molded into a conic cylinder body with intensity and elasticity similar to those of the biological cancellous bone by means of electron beam, the handle body part and the neck body part of the femoral bone handle are manufactured by precise forging[w2] or machine work, then the handle body of the femoral bone handle, the neck body of the femoral bone handle and the near-end lining of the femoral bone handle are serially assembled as a whole through positioning pins and fixing bolts, thus the metal hip-joint combination handle is configured. The combination handle has advantages of porous structure growing within cells, excellent dynamic and biological performance similar to those of human bones, high friction coefficients, stable configuration, multi combination modes among parts, high anastomosis degree and better matching capability with human medulla ossium lumen, relieving pains, stabilizing arthrosis, straightening monstrosity, improving functions of joint, facilitating operation execution, long service life and popular application.

The invention discloses a construction method of a composite column integrally formed by 3D printing and knitting and the composite column. The construction method comprises the steps that (1) after spatial modeling according to the architectural model, spatial shape optimization is performed according to the functional requirements, and the wire knitting tightness is designed according to the bearing capacity requirements; (2) according to a determined spatial shape and the determined knitting tightness, a matrix printing sequence and anchoring points of wires are arranged to obtain a printing and knitting integrated process, and 3D printing materials are prepared; and (3) according to the printing and knitting integrated process, a solid composite column or a column shell is printed layer by layer. According to the construction method of the composite column integrally formed by 3D printing and knitting, the high-strength wires are knitted in when printing a matrix, and the tensile resistance, shear resistance, abrasion resistance and crack resistance properties of the 3D printing matrix are improved while replacing a steel bar.

The invention discloses a spinning process for improving cohesive force between cotton-wool blended yarn fibers. The spinning process comprises the following steps: S1, placing wool fibers in an environment with the temperature of 55 to 65 DEG C and the ultrasonic power of 200 to 230 W for ultrasonic treatment; and placing cotton fibers into an environment with the temperature of 60 to 80 DEG C and the ultrasonic power of 230 to 250 W for ultrasonic treatment; S2, respectively performing cotton opening, cotton carding and drawing procedures on the wool fibers and the cotton fibers which are subjected to ultrasonic treatment in S1; and S3, performing mixed drawing, roving, spinning and spooling procedures on the wool fibers and the cotton fibers which are drawn in S2, to obtain cotton-wool blended yarns. The cohesive force between the cotton fibers and the wool fibers in the finally prepared cotton-wool blended yarn is perfect, and the mechanical property of the cotton-wool blended yarn is excellent.

The invention discloses a cotton-wool blended yarn production technology. The cotton-wool blended yarn production technology has the advantages that wool fibers and cotton fibers are subjected to ultrasonic-vacuum impregnation-microwave drying treatment, so that surface friction coefficients of the wool fibers and the cotton fibers are increased, the strength thereof is enhanced, interfibrous cohesive force can be enhanced during blending of the wool fibers and the cotton fibers, and the strength of a cotton-wool blended yarn can be enhance. Though testing, mechanical properties of fiber materials and the blended yarn which are subjected to ultrasonic-vacuum impregnation-microwave drying treatment are higher than those of fiber materials and the blended yarn which are not subjected to ultrasonic treatment or vacuum impregnation-microwave drying treatment after ultrasonic treatment.

The invention belongs to the technical field of preparation of damping materials, and discloses a preparation method of a surface friction coefficient and viscosity modified iron mine tailing damping material. The method comprises the following steps: carrying out stepped modification by using vinyltriethoxysilane and styrene; uniformly covering the surface of mine tailing with a layer of vinyl groups by using the vinyltriethoxysilane as a preliminary modifier of the surface of the mine tailing, and controlling the content of the vinyltriethoxysilane to be 1% of the mass of an ethanol and mixed water solution comprising ethanol and a water solution according to a mass ratio of 90:10; and initiating polymerization with potassium persulfate by using the styrene as a secondary modifier to produce mine tailing with the surface being uniformly covered with a layer of polymer in order to regulate the damping performance of particles from the surface friction coefficient and the surface structure. The method changes the component structure of the surface of the mine tailing, increases the surface friction coefficient, changes the viscosity, and makes the damping value of the modified damping material 10% higher than that of common granular damping materials.

The invention relates to the field of packaging films, in particular to a three-layer co-extrusion heavy packaging film and a preparation method thereof. The three-layer co-extrusion heavy packaging film comprises an inner layer, a middle layer and an outer layer which are sequentially arranged from inside to outside. The three-layer co-extrusion heavy packaging film provided by the invention hasthe advantages of good stiffness, high surface friction coefficient of the heavy packaging film, no stack slipping, low heat-sealing temperature, wide heat-sealing window, heat-sealing temperature aslow as 100 DEG C and heat-sealing window of 140 parts +/-40 DEG C, can meet the requirements of enterprises with special downstream packaging requirements, and realizes on-line continuous rapid packaging. Compared with a traditional heavy packaging bag, the packaging bag can be used in areas requiring low temperature and large heat sealing environment change difference.

The invention discloses an airbag safety system for increasing the friction coefficient of an automobile seat and aims at providing the airbag safety system. According to the airbag safety system, the surface of the seat can obtain higher surface friction coefficient and the buffer and constrain actions of the automobile seat to passengers are enhanced when an automobile meets with front collision under the condition of not influencing the sitting comfortableness, and thus the safe performance of the front collision of the automobile is improved and the friction coefficient of the automobile seat is increased. The airbag safety system comprises a gas generation device and an airbag layer which is paved on the surface of a seat cushion of the seat; a hard isolating layer is arranged between the airbag layer and the seat cushion of the seat; the airbag layer is provided with a plurality of transverse sub airbags which are arranged side by side; each transverse sub airbag extends along the lateral direction of the seat; the gas generation device is communicated with each transverse sub airbag through a gas-guiding tube; and the gas generation device is connected with an ACU (Automatic Calling Unit) of the automobile safety airbag system through a signal wire.

The invention discloses a glue-free self-sinking floor capable of simplifying a process flow. The glue-free self-sinking floor capable of simplifying the process flow comprises an abrasion-resistant layer, a printed color film layer, a base material upper layer, a grid fiber layer, a base material middle layer, a base material lower layer and an anti-slip film layer which are sequentially arrangedfrom top to bottom; the base material upper layer, the base material middle layer and the base material lower layer are each prepared from the following components in percentage by weight: 14.5-15.5%of PVC resin powder, 0.7-0.8% of an environment-friendly calcium zinc stabilizer, 0.7-0.8% of carbon black, 8.5-9.5% of plasticizer and 74-75% of calcium carbonate. The invention further discloses amanufacturing method of the glue-free self-sinking floor. According to the glue-free self-sinking floor capable of simplifying the process flow and the manufacturing method of the glue-free self-sinking floor, the proportion of the filler calcium carbonate can be greatly increased by improving the formula of a base material, so that a unified formula is adopted in the base material upper layer, the base material middle layer and the base material lower layer, the process flow is greatly shortened, and the manufacturing cost is reduced; and in addition, the production cost is further reduced byimproving the composite process.

The invention discloses an automatic winding device of a digital printing thermal transfer printer, and belongs to the technical field of digital printing processing. The automatic winding device of the digital printing thermal transfer printer comprises a base. A first support which is vertically arranged is fixed to the right side of the upper surface of the base, and a second support which is vertically arranged on the upper surface of the base and located on the left side of the first support. A rotating shaft is connected to the first support in a rotating mode, a winding roller is connected to the outer wall of the rotating shaft in a sleeving mode, and multiple cylinders which are distributed in a ring mode are evenly distributed on the front side wall of the winding roller. A driving motor is fixed to the top end of the second support, the output end of the driving motor is connected with a driving rotating shaft, and a fixing rod which is arranged in an inclined mode is fixedto the front end of the driving rotating shaft. A circular ring is fixed to the rear side wall of the fixing rod, an opening is formed in the circular ring, and a driving rod is fixed to the side wallof the driving rotating shaft. The purpose that automatic winding operation is intermittently conducted can be achieved, the control over the intermittence time of intermittent winding operation canbe conducted by controlling the rotating speed of the motor, the structure is simple, and the work is stable and reliable.

The invention relates to the field of buildings, and provides sound insulation mortar, a sound insulation floor slab, a building and a construction method of the sound insulation floor slab. The soundinsulation mortar is formed by mixing functional raw materials and water, wherein the functional raw materials comprise the following components in percentage by weight: 28-42% of cement, 30-50% of elastic sound insulation particles, 0-10% of sand, 6-25% of vermiculite, 2-15% of mica powder and 5-18% of a building adhesive. The vermiculite enables the sound insulation mortar to have better workability, and is beneficial to improving the sound insulation effect of the sound insulation mortar; the mica powder is beneficial to improving the consistency of the sound insulation mortar, so that thesound insulation mortar is not prone to hollowing and cracking; and therefore, the sound insulation mortar can be laid to form a thin sound insulation layer, the self-weight of the sound insulation floor slab can be reduced, the material consumption of the sound insulation mortar can be saved, the economic efficiency of the sound insulation floor slab can be improved, protection and maintenance are not needed after the sound insulation mortar is laid, and the construction process of the sound insulation floor slab can be simplified.

The invention discloses a new and old bridge splicing seam structure system and a construction method, and belongs to the technical field of bridge structure design and construction. The structural system is mainly composed of bridge decks of new and old bridges, splicing seam members, an asphalt concrete surface layer and a reinforced concrete pavement layer. Arch-shaped porous steel plates are prefabricated, the middle portions of the arch-shaped porous steel plates are pre-buried in the rectangular polyurea elastomer, the porous steel plates on the two sides are exposed, and prefabricated splicing seam components are obtained; and porous steel plates on the two sides of the prefabricated splicing seam component are welded to extending steel bars of bridge decks of new and old bridges, micro-expansion steel fiber rapid hardening sulphoaluminate cement concrete is poured at the welding positions, and finally bridge deck asphalt concrete is paved to be flush with the bridge decks of the new and old bridges and the upper surface of the splicing seam component. The system is simple in construction, not only can ensure better connection between the new and old bridge deck slabs and the splicing seam component, but also can adapt to settlement difference of the new and old bridges and deformation height difference under uneven load, so that the bridges are durable and good in waterproofness.

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 relates to a nickel-based composite anti-slip coating and a preparation process thereof, and belongs to the field of surface treatment. The process comprises the follow steps that firstly, the surface of base metal is subjected to cleaning, oil removal and sand blasting so as to be roughened; and secondly, the composite anti-skid coating is prepared on the metal surface through adopting a supersonic twin-wire arc coasting method, wherein a bonding layer is made of a NiAl95/05 alloy wire, and the surface layer is made of a NiAl80/20 composite wire. According to the nickel-based composite anti-slip coating and the preparation process thereof, the nickel-based composite anti-slip coating is high in bonding strength and friction coefficient, and has good wear resistance, impact resistance, chemical solution resistance and the like; and in addition, requirements of anti-skid functions for occasions such as a large ship aircraft take-off and landing platform, an offshore oil platform, a vehicle ferry deck, a ramp of an underground garage can be met.

The invention relates to a mechanical snake with a damp-proof structure. The mechanical snake comprises a main section disc and a sealing cover, a mounting cylinder is fixed on the outer wall of one side of the main section disc; external threads are formed in the periphery of the outer wall of the mounting cylinder; the sealing cover is connected to the other side of the mounting cylinder; tightening holes are formed in the periphery of the inner wall of the main section disc; opening holes are distributed in the two sides of the outer wall of the tightening hole; the inner wall of the tightening hole is movably connected with a movable bead; a connecting column is distributed on one side of the movable bead; a fixing piece is fixed to the other side of the connecting column. According tothe invention, the mounting cylinder, the external threads and the sealing cover are arranged; the mounting cylinder and the sealing cover form a detachable structure through the external threads; the main section disc and the mounting cylinder are the head positions of the mechanical snake, lighting, monitoring and other mechanical equipment can be mounted in the mounting cylinder according to actual conditions, it is guaranteed that the mechanical snake can independently complete specific operation, the sealing cover and the mounting cylinder are detachably designed, and the requirement ofa user for internal maintenance operation can be effectively met.