65results about How to "Smooth and uniform appearance" patented technology

The invention relates to organic-inorganic hybrid ultraviolet cured paint for metal surface protection. The paint comprises the following components in percentage by weight: 10 to 25 percent of epoxy modified silicon dioxide gel-resin, 15 to 30 percent of bisphenol-A epoxy acrylic ester, 5 to 15 percent of urethane acrylate, 35 to 45 percent of reactive diluent, 2 to 5 percent of toughener, 4 to 6 percent of photoinitiator, 0.5 to 0 percent of addition agent, wherein the epoxy modified silicon dioxide gel-resin is prepared by hydrolyzing a mixture of ethyl orthosilicate and gamma-glycidoxy propyl trimethoxy silane by a sol-gel method first and then adding diethylenetriamine. The paint film formed after the curing of paint has good strength, hardness, flexibility and strong acid and base resistance. The invention solves the problems that the organic-inorganic hybrid paint has high requirement on curing and common ultraviolet cured paint has poor adhesive force and flexibility when cured on metal base materials.

The invention discloses a cyanide-free bright electrogilding additive and an application thereof, which belongs to the technical field of electrogilding. The electrogilding additive is prepared from additives and ultra-pure water, wherein the additives are organic additives or mixtures of inorganic additives and organic additives; the concentration of each component in the additive is 0.5-30g/L. The cyanide-free bright electrogilding additive disclosed by the invention has the functions of improving the brightness of a plated layer, refining crystal grains, stabilizing plating liquid and reducing surface tension. Therefore, the additive can be applied to electrogilding plating liquid, and the addition amount is 0.1-100mL/L. By adopting the additive disclosed by the invention, the properties of the plating liquid and the plating layer of a multi-coordination agent cyanide-free electrogilding system can be effectively improved, the plating liquid has no unstable situations of decomposition, precipitation and the like under long-time working condition, and an electrogilding layer which is golden and full bright macroscopically, uniform and compact in micro crystal, flat and crackless can be obtained under the electroplating condition.

The invention relates to a test sample for tensile properties of a large tow carbon fiber multifilament and a sample preparation method thereof, and belongs to the field of material property testing.The method comprises the steps that tension is applied to wind the carbon fiber multifilament of not less than 24 k around a frame; gum dipping, gum leaching and heat curing are conducted on the framewound with the multifilament, and the gum-dipped multifilament is cut into multifilament segments after cooling; a set of metal or composite reinforcing sheets are respectively bonded to the two endsof the multifilament segments, wherein each set includes two reinforcing sheets disposed oppositely, a structure glue film is bonded to the inner surface of at least one of the two reinforcing sheets, the middle region and the peripheral edge region of the inner surface are vacated in bonding, and the two ends of the multifilament segments are located in the middle region; the reinforcing sheetsare pressed, heated and cured to obtain the test sample. By adopting the method, the mechanical properties of the reinforcing sheets are improved, the bonding strength between the multifilament and the reinforcing sheets is improved, and the problems of tear damage of the reinforcing sheets and debinding and slippage of fiber when the obtained test sample is used in a tensile test are avoided.

Disclosed is a radial stacking type friction-stir welding material adding forming process for a large thick-wall ring part. A sheet-shaped thin-wall ring part single body is prepared through radial-axial hot rolling technology, and radial stacking type double-shaft friction-stir welding material adding forming of the thin-wall ring part single body is conducted through double-shaft friction-stir welding material adding forming technology. A welding wire used by welding needs to be preheated by a laser heater, and plasticizing of the welding wire during welding is convenient. Meanwhile, during welding, micro forging treatment needs to be conducted on plasticized metal through an ultrasonic vibration exciter, and the effect that the texture form of the metal forming a weld joint approximately completely forms a welding core is ensured. One week after welding is conducted along the weld joint, a keyhole is filled with the welding wire constantly, meanwhile, a stirring head is drawn out of a workpiece slowly, and thus welding of the first ring of thin-wall ring part single body is completed. Finally, radial stacking type friction-stir welding material adding forming of the thick-wall ring part is conducted. Through the radial stacking type friction-stir welding material adding forming process, the utilization rate of materials can be increased significantly, energy consumption is reduced, and the overall performance of the product is improved.

Inhibition of expansion of a cereal product, such as a ready-to-eat cereal, by a particulate insoluble component such as fiber and/or calcium is avoided by pelletizing the particulate insoluble component. A binder component, such as gelatinized starch, is used to bind particles of the particulate insoluble component into a coherent mass which is formed into non-expanded pellets for fortification of the cereal product. The expanded cereal products, such as extruded puffed RTE cereals which contain the pellets, exhibit a crisp, uniform texture and cell structure, improved, prolonged bowl life, a non-gritty mouthfeel, and a smooth, uniform surface appearance even though they are fortified with high amounts of the solid or particulate insoluble nutritional components.

Disclosed is an axial stacking type friction-stir welding material adding forming process for a large thin-wall ring part. A sheet-shaped thin-wall ring part single body is prepared first through radial-axial hot rolling technology, then axial stacking type welding forming of the sheet-shaped thin-wall ring part single body is conducted through friction-stir welding material adding forming technology. A welding wire used by welding needs to be preheated by a laser heater, and plasticizing of the welding wire during welding is convenient. Meanwhile, during welding, micro forging treatment needs to be conducted on plasticized metal through an ultrasonic vibration exciter, and the effect that the texture form of the metal forming a weld joint approximately completely forms a welding core is ensured. One week after welding is conducted along the weld joint, a keyhole is filled with the welding wire constantly, meanwhile, a stirring head is drawn out of a workpiece slowly, and thus welding of the first layer of sheet-shaped thin-wall ring part single body is completed. Finally, axial stacking type friction-stir welding material adding forming of the thin-wall ring part is conducted layer by layer. Through the axial stacking type friction-stir welding material adding forming process, the utilization rate of materials is increased significantly, energy consumption is reduced, and the overall performance of the product is improved.

The invention relates to a sample preparation method for testing the tensile property of an asphalt-based carbon fiber multifilament, and belongs to the technical field of material property testing. The method comprises the following steps: applying tension to wind a carbon fiber multifilament on a frame, and fixing the bent part of the multifilament on the frame with a fixing material; placing the frame with wound multifilament vertically along the extension direction of the multifilament, dripping a glue solution from the upper end of the frame to ensure that the dripped glue solution flowsfrom the upper end of the multifilament to the lower end along the multifilament until the multifilament is completely soaked to obtain a glue dipped multifilament frame; and curing the glue dipped multifilament frame, cutting the multifilament, and pasting a paper reinforcing sheet to obtain a tensile sample. According to the method provided by the invention, fiber damages in the operation process are avoided, the sample preparation efficiency is improved, the problem of fiber monofilament brittle fracture caused by the surface tension of the glue solution and the gravities of the glue solution and the multifilament is also avoided, the maximum developed strength of the multifilament is ensured, the accuracy of the tensile strength test value is greatly improved, and the tensile strengthdispersion coefficient is reduced.

Disclosed is a method for improving the appearance quality of a formed diammonium phosphate slurry particle, which relates to a fertilizer containing ammonium salts, the method uses surface active agents to change the gas-liquid interfacial tension and viscosity of slurry so as to improve the particle sphericity and homogeneity when in diammonium phosphate slurry granulation, thereby reaching the purpose of improving the product appearance quality of diammonium phosphate particles; the method has the detailed technical proposal that: proper surface active agents or combinations thereof are firstly selected, and the surface active agents or combinations thereof are then prepared into a saturation solution; and then the solution is pumped to the pipe-connecting part of a suction inlet of a slurry pump by a gear pump, and the slurry-spraying granulation can be implemented after the solution enters the slurry for mixing. Using the method of the invention and adding the surface active agents to the slurry can largely reduce the gas-liquid interfacial tension and viscosity of the diammonium phosphate slurry by only consuming a little amount thereof, then the solution can be adapted to the size required by the granulation technique, and medium-sized particles do not stick to one another or seldom stick to one another in the granulation process, thereby ensuring the roundness, smoothness, uniformity and cleanness of the diammonium phosphate particle appearance and improving the product appearance and product grade.

The invention discloses a preparation method of a wear-resistant and flame-retardant swash plate. The prepared swash plate comprises a base plate and a wear-resistant coating, wherein the wear-resistant coating comprises base resin, silicon-containing phosphate, PTFE (polytetrafluoroethylene) particles, graphite fluoride and composite filler. The wear-resistant paint disclosed by the invention is reasonable in composition and has excellent heat resistance and adhesion. The swash plate based on the wear-resistant paint has excellent wear resistance and flame retardance, has dry state or oil state friction property far better than that of swash plates prepared from the existing resin, and can meet the requirements of auto air conditioning compressors.

The invention discloses a preparation method of a cyanate ester based wear-resistant self-lubricating swash plate. The preparation method comprises following steps: preparation of a promoter; preparation of an oxidized graphene/cyanate ester-epoxy resin composite material; preparation of a wear-resistant self-lubricating coating layer; spraying; and curing; wherein the oxidized graphene/cyanate ester-epoxy resin composite material is dissolved in acetone so as to obtain a composite material acetone solution with a mass concentration of 40%; 30 mass parts of a solid lubricating agent is added into 100 mass parts of the composite material acetone solution for uniform mixing so as to obtain a wear-resistant coating layer solution. The wear-resistant coating is reasonable in composition, and excellent in heat resistance and bonding performance, so that the swash plate prepared based on the wear-resistant coating possesses excellent wear resistance, wet state friction performance and oil state friction state are both much better than that of conventional resin swash plates, and the requirements of automobile air-conditioning compressor can be satisfied.

The invention relates to a liquid spray electrotherapy room treated by coating carbon fibers and a coating system thereof. The coating system is composed of a de-coiling device, a guiding device, a flattening device, a liquid spray electrotherapy room, an electrostatic coating room, a melting furnace, an adjusting device, an electrostatic device, a resin content test system, a traction device, a coiling device, a powder device, a control system and a compressed air source. A presoaked fabric passes by the liquid spray electrotherapy room with liquid spray electricity and then passes by the coating room with the electrostatic resin powder, so that the two sides of the presoaked fabric are coated with the resin powder; the fabric is flattened by the melting furnace under high temperature, and then the resin is adhered to the presoaked fabric; in order to uniformly and flatly soak, an X-ray instrument and a computer are adopted for detecting and controlling in the whole soaking process, so as to guarantee the controllable increasing of the soaked resin content of the fabric and meet the requirement of the manufacturing for 1000mm wide high-quality pre-coated fabric. The device is suitable for solvent-free thermosetting resin and thermoplastic resin.

The invention discloses a gelatin protective agent for chicken infectious laryngotracheitis recombined avian pox virus live vaccine. The gelatin protective agent is prepared from the following components: gelatin, saccharose and sterile injection water, wherein each 100ml of the gelatin protective agent is prepared from 4.25g of the gelatin, 25g of the saccharose, and the balance of the sterile injection water. The chicken infectious laryngotracheitis recombined avian pox virus live vaccine using the gelatin protective agent is easy to dissolve and fall off, and the appearance is uniform and flat.

The invention discloses a disperser composition and application, which is composed of 10-90% naphthalenesulfonate and 90-10% polycarboxylate to prepare water dispersing particle pesticide.

The invention discloses a wear-resistant and flame-retardant swash plate. The swash plate comprises a base plate and a wear-resistant coating, wherein the wear-resistant coating comprises base resin, silicon-containing phosphate, PTFE (polytetrafluoroethylene) particles, graphite fluoride and composite filler. The wear-resistant paint disclosed by the invention is reasonable in composition and has excellent heat resistance and adhesion. The swash plate based on the wear-resistant paint has excellent wear resistance and flame retardance, has dry state or oil state friction property far better than that of swash plates prepared from the existing resin, and can meet the requirements of auto air conditioning compressors.

The invention discloses a forming device of a polyurethane solid tire and a solid tire preparation method. The forming device comprises a mold (1) and a heavy load bearing rotary table (2) for drivingthe mold (1) to rotate; the mold (1) comprises an upper mold (11) and a lower mold (12) which are opened and closed in a hinged mode on the side edge, the upper mold (11) and the lower mold (12) arefastened through a locking mechanism (126) after being assembled, and a solid tire forming mold cavity (13) is formed in the mold (1); a casting cavity (112) is formed in the center of the upper mold(11); the inner side wall of the lower mold (12) is a tire forming arc-shaped surface, and a circular truncated cone (122) is buckled with the pouring cavity (112) after the mold is closed; and a positioning groove connected with the heavy load bearing rotary table (2) is arranged at the bottom of a body B (121). According to the forming device, the process formula and the process parameters are optimized, the polyurethane solid tire is produced by using the forming device of the polyurethane solid tire, the solid tire with stable quality performance can be quickly and efficiently obtained, the production efficiency is improved, and the production cost is reduced.

The invention relates to the field of resin compositions, particularly a thermosetting rosinyl resin composition and a preparation method thereof. The thermosetting rosinyl resin composition comprises modified rosin, dibasic alcohol and a crosslinking agent. In a mass ratio of 1:(0.2-0.8):(0.3-1.5). Aziridine is used as the crosslinking agent; and the crosslinking agent has the advantages of very high reaction activity with the carboxyl group in the rosin and high crosslinking speed. The preparation method has the advantages of simple and feasible steps, low reaction temperature, short time and mild conditions, relates to fewer varieties of raw materials in the whole crosslinking process, does not need any special equipment or catalyst, and is beneficial to industrial production. The prepared rosinyl resin composition has uniform and smooth appearance; and the varieties and consumptions of the modified rosin and dibasic alcohol can be changed to adjust the elasticity, strength, color and transparency of the resin composition material, thereby greatly widening the application range of the rosinyl resin composition material.

The invention relates to a tensile property sample preparation device of an ultra-high modulus carbon fiber multifilament and a sample preparation method, and belongs to the technical field of material property testing. The tensile property sample preparation device of the ultra-high modulus carbon fiber multifilament includes a precision control system, an automatic glue dispensing system and anauxiliary positioning system. The sample preparation method comprises the following steps of: placing a pre-wound ultra-high modulus carbon fiber multifilament frame on a sample preparation glue dispensing device, and automatically adding a glue solution through the precision control system; then placing the glue-dipped carbon fiber multifilament in an oven for curing; and pasting a reinforcing sheet for tensile testing. The invention solves the problem of high damage and brittle fracture of fibers encountered during a manual glue-dipping process of ultra-high modulus carbon fibers, and prepares multifilament tensile sample strips with smooth appearance. The tensile property sample preparation device of the ultra-high modulus carbon fiber multifilament and the sample preparation method disclosed by the invention have important popularization and application prospects in the engineering development and production of the ultra-high modulus carbon fibers and composite materials thereof, and high thermal conductivity mesophase pitch-based carbon fibers and composite materials thereof.