39results about How to "Improve service life effect" patented technology

A rotor blade arrangement (20), especially for a gas turbine, which can be fastened on a blade carrier (19) and includes in each case a blade aerofoil element (10) and a platform element (14), wherein the platform elements (14) of a blade row form a continuous inner shroud. With such a blade arrangement, a mechanical decoupling, which extends the service life, is achieved by the blade aerofoil element (10) and the platform element (14) being formed as separate elements and by being able to be fastened in each case separately on the blade carrier (19).

The invention discloses a preparation method of a graphene oxide coated carbon microsphere composite material. The method comprises the following steps: preparing a dextrose solution as a carbon source; performing hydrothermal reaction under an acidic condition; washing the obtained product in a plurality of times; performing suction filtering; drying to obtain carbon microspheres; dissolving thecarbon microspheres in a mixed solution consisting of water and absolute ethyl alcohol; then adding a mixed solution of a silane coupling agent and the absolute ethyl alcohol; performing condensing and reflowing under a room temperature or a heating condition; washing the obtained product in a plurality of times; performing suction filtering; drying to obtain modified carbon microspheres; adding graphene oxide to DMF; then adding an activating agent; ultrasonically treating to obtain a graphene oxide solution; adding the modified carbon microspheres to the graphene oxide solution; ultrasonically processing to obtain an uniform mixed solution A; adding a catalyst to the mixed solution A; performing condensing and reflowing under a heating condition; washing the obtained product in a plurality of times; and performing suction filtering and drying to obtain the graphene oxide coated carbon microsphere composite material.

The invention provides an automatic control method of a tubular billet tail ring of a perforating machine. The automatic control method is characterized by comprising the following steps that 1, a perforating unit roller operates in a no-load speed state and is bitten into a pipe blank; 2, after time is delayed for T1, the speed is increased to the rolling speed at an accelerated speed I; 3, whenthe current pipe blank is rolled, high-speed rolling time T2 of the current tubular billet is calculated according to rolling time of a former steel pipe, and T2 is equal to T2 upper + (T3 upper-T3 setting)*V3/V2; 4, in the steel polishing process, the speed is decreased to the steel polishing speed at an accelerated speed II; and 5, after steel polishing is completed, time is delayed for T4, andthe roller speed is restored to the steel biting speed. According to the method, the tubular billet tail ring after perforating is eliminated basically, and the problem that due to the tubular billettail ring, the surface of a core bar is damaged is solved basically. By the adoption of the automatic control program, the problem of the tubular billet tail ring generated by the perforating machinecan be well controlled, the technology can meet the site production requirement, and the effects on stability of the production quality and normal use of the core bar are remarkable.

The invention discloses a self-cleaning membrane structure and a preparation method thereof, and belongs to the field of building membrane materials. The self-cleaning membrane structure comprises a high-strength polyester fabric core layer, a strengthening layer, a polyvinyl chloride (PVC) function layer and a self-cleaning layer, wherein the PVC function layer comprises a creep-resistant layer and an anti-aging layer; and the strengthening layer is prepared from the following raw materials in parts by weight: 100 parts of polyvinyl chloride paste resin, 5 to 15 parts of polystyrene resin, 140 to 160 parts of dioctyl-phthalate (DOP), 2 to 8 parts of liquid rare-earth stabilizer, 2 to 6 parts of liquid isocyanate cross-linking agent, 6 to 15 parts of flame retardant, 1 to 5 parts of octylphenol polyoxyethylene ether, and 5 to 15 parts of OS-20 diluent. The self-cleaning membrane structure has the effects of better creep resistance, a better mechanical property and longer service life.The preparation method of the self-cleaning membrane structure comprises the steps of preparing raw materials; preparing the membrane layers: sequentially forming the strengthening layer, the creep-resistant layer and the anti-aging layer, and then plastifying; embossing; carrying out surface treatment to form the self-cleaning layer; embossing; and cooling to obtain the product. The product hasthe effects of better tear resistance and tension resistance, and higher membrane material peeling strength.

The invention relates to the technical field of nuts, and discloses an anti-falling safety pressing rivet nut. The anti-falling safety pressing rivet nut comprises a supporting plate, a rollover riveting ring, a nut block, a supporting outer plate, a reset spring, a rotating block and a rotating plate, wherein the supporting plate comprises a supporting plate shell, flange riveting claws and sunkcave deformed material accumulating grooves, wherein the lower surface of the rollover riveting ring is fixedly connected with the upper surface of the supporting plate shell, the lower surfaces of the flange riveting claws are fixedly connected with the upper surface of the supporting plate shell, a riveting claw grooves are formed in the upper surfaces of the flange riveting claws, the upper surface of the nut block is fixedly connected with the lower surface of the supporting plate, two limiting holes are formed in the lower surface of supporting outer plate shell, the supporting outer plate comprises a rotating groove, the limiting holes and the supporting outer plate shell, the nut block is positioned in the supporting outer plate shell, a rotating groove is formed in the upper surface of a rotating plate shell, the rotating block is inserted into the rotating groove, and the rotating block is movably connected with a rotating plate. The pressing rivet nut has the advantages thatthe after the pressing rivet nut is pressed and riveted on a dissimilar material, a thin sheet metal and a high-strength steel sheet, a bolt can be stably fixed on the sheet metal.

The invention discloses a resin grinding wheel capable of cutting and grinding. The resin grinding wheel capable of cutting and grinding comprises a cutting and grinding wheel housing, a transition hole, a slicing plate and a grinding plate, wherein the grinding plate is fixedly connected into the cutting and grinding wheel housing; a circular assembling hole is connected into a positioning ring in a penetrating manner; heat dissipating strips are closely clung to the front surface of the cutting and grinding wheel housing; the transition hole is connected to the front surface of the cutting and grinding wheel housing in a penetrating manner; glass fiber gridding cloth layers are fixedly connected to the peripheries of resin fibers in the second layer; the resin fibers are compressed and combined by the glass fiber gridding cloth layers utilizing inner fiber nets in order to enable close and compact inner part of the grinding wheel; the circular assembling hole is capable of fixing a device into the grinding wheel through an own encircling hole; the transition hole on the basis of own width is combined with peripheral thick and fine grinding wheels to form a clearance so as to realize the transition effect; and meanwhile, the heat dissipating strips on the grinding wheel are capable of dispersing heat produced by the grinding wheel through concave strips; and the grinding wheelcapable of cutting and grinding has a wide application prospect.

The invention discloses a quick-charging external connection cable for a large-current soft charging pile and a preparation method of the quick-charging external connection cable. According to the invention, outer fluoroplastic of a cooling pipe of a main core wire has temperature resistance and insulation effects, and inner foamed polyethylene with a foaming degree of 65-85% increases the volume of cooling liquid and also has an effective supporting effect; more importantly, when a hollow flexible conductor of the main core wire is prepared, the compression resistance of the cooling pipe is improved, so after all conductor wires are grouped and bundled, the cooling pipe can be used as a support and then stranded to form the cable, the flexibility of the cable can be effectively improved, and compared with a cable of a conventional cooling device, the cable is easier to install, small in bending radius and large in current-carrying capacity; in addition, an temperature-sensitive optical fiber is added when the hollow flexible conductor is formed, and the flow rate of cooling liquid can be controlled according to feedback temperature, so the temperature of the cable is constant; and thus, the charging speed of the cable is greatly improved, the heating problem of the cable is greatly improved, an insulation aging speed is effectively reduced, the service life of the cable is prolonged, and product flexibility is better.

The invention discloses a formula and treatment method of an abrasion-resisting, anti-friction and life-prolonging nano plating layer of mechanical parts. The formula of an electroplating solution comprises 150-650g/l of ammonia nickel methane sulfonate, 1-50g/l of cobalt chloride, 15-60g/l of boric acid, 2-80g/l of nano tungsten sulfide plating slurry, 0.5-3g/l of cerous sulfate and 0.5-3g/l of 1-2-3-benzotriazole, and the lamellar particle size of the nano tungsten sulfide plating slurry is 40-70 nm. According to the treatment method of the abrasion-resisting, anti-friction and life-prolonging nano plating layer of the mechanical parts, through the electroplating solution with the ammonia nickel methane sulfonate as the main component, the nano tungsten sulfide plating slurry is added toform the electroplating solution, the plating layer has high mechanical properties after electroplating, the ductility, uniformity and corrosion resistance are all greatly improved, the effects of abrasion-resisting, anti-friction and prolonging of the service life are achieved, and good application prospects are achieved.

The invention relates to the technical field of leisure household articles, and especially relates to a polyethylene and polyvinyl formal composite material, a preparation method thereof, and a bionic rattan chair. The polyethylene and polyvinyl formal composite material is prepared from, by weight, 40-50 parts of polyethylene, 30-40 parts of polyvinyl formal, 14-22 parts of color master batch and 5-9 parts of a fiber material. The preparation method of the polyethylene and polyvinyl formal composite material comprises the following steps: (1) preparing a polyethylene and polyvinyl formal base material; and (2) performing injection molding to obtain the polyethylene and polyvinyl formal composite material. The polyethylene and polyvinyl formal composite material and the preparation method thereof have the effects of improving the aging resistance of the bionic rattan chair and prolonging the service life of the bionic rattan chair.

The invention discloses a polybutadiene-based rubber for a non-slip wear-resistant shoe sole and a preparation method of the polybutadiene-based rubber for the non-slip wear-resistant shoe sole. Comprising the following components in parts by weight: 60 parts of polybutadiene rubber, 32 to 48 parts of thermoplastic elastomer SBS, 26 to 35 parts of modified szaibelyite composite particles, 1.5 to 3.6 parts of terpene-phenolic resin, 0.2 to 0.8 part of a silane coupling agent, 1.2 to 1.8 parts of an anti-aging agent, 2.3 to 4.6 parts of sulfur and 1.1 to 1.6 parts of an accelerant. The anti-slip wear-resistant sole rubber based on polybutadiene prepared by the invention not only has wear resistance and skid resistance, but also has the advantages of light weight and strong elasticity, and in addition, the ageing resistance is also well improved.

The invention relates to the technical field of electrochromic material preparation, and discloses an electrochromic material and a preparation method thereof. The electrochromic material is of a multi-layer hollow sphere structure, the outer diameter of the electrochromic material is 50-180 microns, the outer surface layer of the electrochromic material is a high-molecular polymerization product electrochromic material, iron is doped in the high-molecular polymerization product electrochromic material, the inner layer is made of a high-molecular polymerization product non-electrochromic material, and the thickness of the inner layer is 7-15 microns. A layer of inorganic metal film is plated on the surface of the high-molecular polymerization product electrochromic material, so that the physical and chemical properties of the high-molecular polymerization product electrochromic material are improved on the premise of not changing the electrochromic properties of the high-molecular polymerization product electrochromic material, the service life of the high-molecular polymerization product electrochromic material is prolonged, and the market competitiveness of the electrochromic material is improved.