16results about How to "Reduce surface friction coefficient" patented technology

The invention relates to a wear-resistant and anti-stripping toy coating and a preparation method thereof, and belongs to the technical field of coatings. The coating is prepared from a waterborne polyurethane resin emulsion, a waterborne modified polyacrylate copolymer emulsion, a styrene-stearyl alcohol methacrylate cross-linked polymer, castor oil isostearate succinate, an olibanum serratum resin extract, dimerized pentaerythritol hexahydroxy stearate, stearyl alcohol beeswax, a compound emulsifier, nano silicon carbide, nano aluminum oxide, nano silicon dioxide, nano silicon dioxide, nano silicon dioxide, nano silicon dioxide, nano silicon dioxide, nano silicon dioxide and nano aluminum oxide. The coating is prepared by taking nano bentonite, polytetrafluoroethylene micro powder, a silane coupling agent and other components as raw materials through a special method, has good wear resistance, stripping resistance and impact resistance, is safe and environment-friendly, has good protection to a base material and long service life, and is a high-quality toy product coating.

The invention discloses a glazing varnish for tipping paper and a processing device, and relates to the technical field of ink, the glazing varnish comprises the following components by weight: 56-60 parts of a resin liquid; 8 to 12 parts of a nano colloidal particle silver pre-dispersion liquid; 5 to 15 parts of polytetrafluoroethylene wax slurry; 10 to 20 parts of ethanol; 17 to 20 parts of polytetrafluoroethylene wax; the resin liquid is prepared by mixing dipropylene glycol monomethyl ether, dimethyl carbonate, epoxidized soybean oil, wood pulp nitrocotton and ethanol; the polytetrafluoroethylene wax slurry is prepared by mixing polytetrafluoroethylene wax with the resin liquid and ethanol. The polytetrafluoroethylene wax is added into the ink, and the polytetrafluoroethylene wax has wear resistance and non-stick property and reduces the surface friction coefficient, so that the adhesion between the finished cigarette filter coated with the glazing varnish and the lips of a smoker is effectively reduced, and the phenomenon that the lips of the smoker are damaged due to the fact that dead skin is torn down when the smoker takes off a cigarette is avoided.

The utility model relates to the technical field of hot pressboards, and discloses an efficient hot pressboard for a hot press, which comprises a board body and a mounting block, a heating pipe is embedded and connected in the board body, the heating pipe is S-shaped, one end of the heating pipe extends out of the board body and is provided with a power connection head, the lower surface of the mounting block is provided with a clamping groove, and the clamping groove is fixedly connected with the mounting block. An insertion block is fixedly connected to the surface of the plate body, and a clamping mechanism matched with the clamping groove is arranged in the insertion block; the clamping blocks are clamped into the clamping grooves, so that installation of the plate body is completed, installation and disassembly are easy and convenient, use is convenient, the plate body is guided through the guide sleeve, and the sliding stability of the plate body is guaranteed.

The present disclosure relates to the technical field of lubricating coatings, and specifically to a low-temperature curing lubricating coating for fan bearings and a preparation method thereof. The lubricating coating comprises the following components by weight: 55-65 parts of a mixed solvent, 10-15 parts of a composite bonding resin, 10-15 parts of a modified lubricating filler, 8-12 parts of a wear-resistant filler, 0.5-3 parts of a dispersant, 0.5-1 parts of micronized dicyandiamide, 0.5-2 parts of a leveling agent, 0.5-2 parts of a defoamer, and 0.5-1 parts of an anti-settling agent; wherein the composite bonding resin comprises the following components by weight: 10-20 parts of an organic silicone resin, 15-30 parts of a phenolic epoxy resin, 15-30 parts of a polyurethane acrylate, and 35-45 parts of a polyhydroxy polyether resin; the modified lubricating filler is obtained by modifying a mixed powder containing molybdenum disulfide and polytetrafluoroethylene. The present disclosure can improve the adhesion, wear resistance, and lubrication performance of the lubricating coating and reduce the curing temperature.

The invention relates to the technical field of fertilizing equipment, and discloses an automatic fertilizing device combining fungicide and fertilizer for use, which comprises a batching tank, the top of the batching tank is fixedly connected with a stirring motor, the batching tank is internally provided with a stirring shaft, the top end of the stirring shaft is fixedly connected with the output end of the stirring motor, and the bottom end of the stirring shaft is provided with an opening and closing mechanism. A stirring part is arranged on the outer wall of the stirring shaft, the bottom wall of the batching tank is open, the outer wall of the bottom of the opening and closing mechanism is embedded and fixedly connected to the inner wall of the opening, two discharging ports are symmetrically formed in the bottom wall of the opening and closing mechanism, and sowing plates are arranged below the two discharging ports in a one-to-one correspondence mode. Through the arrangement of the opening and closing mechanism, communication or isolation between the discharge port and the interior of the batching tank is realized by utilizing forward and reverse rotation of the stirring motor, so that the stirring and discharging functions are effectively integrated, an operator does not need to additionally operate a discharge valve, the operation process is simplified, and the fertilization efficiency is improved.

The utility model discloses a kind of scratch-resistant electromagnetic shielding film, it is related to electromagnetic shielding film technical field, including the substrate support layer with the thickness of 50-100 μm, the top of the substrate support layer is provided with conductive adhesive layer, the top of the conductive adhesive layer is provided with electromagnetic shielding layer, the top of the electromagnetic shielding layer is provided with elastic buffer transition layer, the top of the elastic buffer transition layer is provided with composite reinforcing layer, the top of the composite reinforcing layer is provided with wear-resistant protective layer, the top of the wear-resistant protective layer is provided with anti-fingerprint layer.The utility model realizes the overall optimization of surface performance while guaranteeing electromagnetic shielding performance by the synergistic effect of wear-resistant protective layer and anti-fingerprint layer, wear-resistant protective layer can directly resist scratch, rubbing and other mechanical damage in daily use, and the polytetrafluoroethylene micro powder of self-lubricating layer reduces the risk of scratch when external force acts by reducing surface friction coefficient, and the two form high-efficiency scratch-resistant protective system.

The invention discloses a punch for processing a high-lock bolt driving groove, which comprises a limiting base (1), a purple titanium coating (2), a supporting rod (3), an abutting head (4) and a punch (5), and is characterized in that the limiting base (1) is arranged on the supporting rod (3); the outer surface of the punch (5) is covered with a purple titanium coating (2), the punch (5) and the supporting rod (3) are integrated, the supporting rod (3) and the abutting head (4) are integrated, and the purple titanium coating (2), the supporting rod (3), the abutting head (4) and the punch (5) penetrate into step-shaped holes formed in the limiting base (1). The device is small in abrasion and low in cost.

The application discloses an inorganic copolymer anticorrosive paint and a preparation method thereof, and relates to the technical field of paints. The inorganic copolymer anticorrosive paint comprises the following raw materials in parts by weight: 20-30 parts of silica sol, 8-15 parts of sodium hydroxide, 30-45 parts of metakaolin, 8-20 parts of quartz sand, 15-25 parts of water, 0.3-2 parts of sodium polyacrylate, 0.2-3 parts of polydimethylsiloxane emulsion, 5-12 parts of modified nanometer titanium dioxide, 6-10 parts of modified epoxy resin, 10-25 parts of hydroxyethyl methacrylate, 5-10 parts of zinc phosphate, 3-8 parts of aluminum tripolyphosphate and 2-6 parts of red iron oxide. The inorganic copolymer anticorrosive paint has scientific raw material proportioning, and the anticorrosive performance is enhanced through the modified nanometer titanium dioxide and the epoxy resin. In the preparation, step-by-step feeding and ultrasonic dispersion are adopted to ensure that the materials are uniform, and vacuum degassing and nitrogen protection are adopted to improve the stability. The silica sol, the zinc phosphate and other components have a synergistic effect, a dense coating is formed, the anticorrosive performance is high, the construction performance is good, and the inorganic copolymer anticorrosive paint is suitable for various scenes.

The present invention provides a self-lubricating and dirt-resistant spandex and a preparation method, belonging to the field of spandex fiber manufacturing. The present invention introduces a silicon-oxygen bond into the main chain of the spandex through chemical modification, and at the same time forms a group containing a fluorine atom in the side chain, which not only gives the spandex fiber excellent self-lubricating properties, greatly reduces the surface friction coefficient, but also enables it to have excellent dirt resistance. By optimizing the chemical structure of the spandex matrix, the present application does not need to rely on externally added lubricants or oils, and fundamentally solves the dilemma of the traditional spandex that is difficult to reconcile between lubricity and mechanical properties, and the spandex product prepared has good comprehensive mechanical properties.

The invention belongs to the field of material science and engineering, and relates to a composite heat treatment process suitable for working in an environment of 300 DEG C. According to the composite heat treatment process, a workpiece is tempered at the use temperature of 380 DEG C after high-frequency quenching through a method combining sulfur carbonitriding and high-frequency quenching, the surface hardness of the outer circle phi 34 is 54-56 HRC, and the technical requirement for the use temperature of 300 DEG C is met. A method of combining sulfur-carbonitriding and high-frequency quenching is adopted, and a compound layer of sulfur, carbon and nitrogen is formed on the surface of a workpiece, so that the hardening layer depth of the workpiece is increased, the alternating load resistance of the workpiece is enhanced, the surface friction coefficient is reduced, the surface hardness is improved, the toughness of the center of the workpiece is kept, the risk of brittle fracture is reduced, and the wear resistance of the workpiece is improved; and the process repeatability is good, and stable product quality can be ensured.

The utility model discloses a treatment system for high-concentration desizing, slashing and dyeing wastewater, which is characterized in that sewage is subjected to quality-based and split-flow treatment according to different properties, desizing and slashing high-concentration sewage is independently collected and then is lifted to a homogeneous hydrolysis acidification pool and a high-efficiency anaerobic reactor for treatment through a pump, and then effluent is connected to a comprehensive sewage adjusting pool through a sedimentation pool; dyeing wastewater and ground flushing and domestic sewage are discharged to a grid well, a microfiltration grid and a comprehensive sewage adjusting tank; after being treated by different pretreatment processes, the wastewater respectively enters a comprehensive wastewater adjusting tank, and then is subjected to advanced treatment by a high multiplication biological treatment tank, a sedimentation tank, an intermediate water tank, a gas-liquid jet flow biological aeration filter tank, a high density clarification tank and a double-membrane method advanced treatment facility, so that pollutants are comprehensively reduced, and the quality of the effluent meets the production reuse water quality standard; and cyclic utilization can be realized. The system has the advantages of simple treatment flow, small occupied area, low construction cost, low operation cost, high automation degree, convenience in operation and management and the like.

The present application relates to a kind of photocuring polyurethane acrylate coating, raw material component is according to 100% mass, including: polyurethane acrylate prepolymer 30~36%, active diluent 5~12%, polyethylene glycol 0.1~0.5%, photoinitiator 1~2%, leveling agent 0.1~1%, the rest is solvent;The active diluent is composed of six functional degree acrylate monomer and double functional degree acrylate monomer.The present application uses six functional degree and double functional degree acrylate compound as active diluent, improves coating crosslinking degree;While introducing polyethylene glycol reduces the friction coefficient of coating surface, through the synergistic effect of body crosslinking enhancement and interface lubrication friction reduction, effectively improves the friction resistance of coating.It is tested that the coating of the present application has no obvious scratch after 0000# steel wire reciprocating friction 3000 times under the condition of 1000g load.

The clamp sheath of the metal-rubber composite structure used for the cold-rolled steel coil lifting crane of the present invention comprises: two side wings and a column sleeve, which is formed by integrally casting and vulcanizing rubber, the two side wings extend out from the lower end of the column sleeve to both sides respectively, a guide column hole is opened on the column sleeve, the clamp sheath is respectively installed on the clamp arm of the cold-rolled steel coil lifting crane through the clamp arm guide column, the clamp arm guide column passes through the guide column hole, and the clamp sheath is fixed on the clamp arm guide column, the clamp sheath of the metal-rubber composite structure also comprises: a steel cylinder, a bracket, a bearing and a connecting shaft, the bracket comprises: a steel plate and two groups of steel side plates, the steel plate is buried in the two side wings, a group of steel side plates are vertically welded at both ends of the steel plate, each group of steel side plates extends out from the side wing toward the column sleeve direction, each group of steel side plates is two parallel steel side plates, along the length direction of the steel side plates, a plurality of bearings are installed between the two steel side plates through the connecting shaft, the outer circumference of the bearing is coated with a rubber layer, and the steel cylinder is fixed in the guide column hole.

The invention discloses a wet friction fastness improver with excellent hydrophilicity and good self-lubricating performance. The wet friction fastness improver is composed of a self-made hydrophilic prepolymer and a self-lubricating functional monomer combined by a multi-arm bridging agent. Experimental results show that the water-based self-lubricating wet friction fastness improver has good hydrophilicity and can be effectively adsorbed to the surface of a fabric; at the same time, the wet friction fastness improver has good self-lubricating performance and can effectively reduce friction and improve the wet friction grade in a wet state.

The invention relates to the technical field of railway wagons, in particular to a shaft end power generation device contact structure and a preparation method thereof.The shaft end power generation device contact structure comprises a macromolecule wear-resisting contact, the end face of the macromolecule wear-resisting contact is a plane, a guide rod is connected to the lower portion of the macromolecule wear-resisting contact, and a spring is connected to the lower portion of the guide rod; and the spring and the lower part of the guide rod are sleeved in the U-shaped rod. The structure of the contact is optimized, the wear resistance of the contact is enhanced, the friction area is increased, the stress condition of the contact is improved, and the reliability of the contact is greatly improved.