34results about How to "Guaranteed effective length" patented technology

The invention belongs to the technical field of high polymer materials and discloses a continuous long fiber reinforced thermoplastic polyurethane material and a preparation method thereof. The continuous long fiber reinforced thermoplastic polyurethane material disclosed by the invention comprises the following components in parts by weight: 200-800 parts of thermoplastic polyurethane, 800-200 parts of continuous long fiber reinforcing agent, 10-30 parts of compatilizer, 10-20 parts of antioxidant, 2-6 parts of lubricating agent and 5-10 parts of crosslinking agent. Compared with the prior art, the continuous long fiber reinforced thermoplastic polyurethane material disclosed by the invention is simple in structure, reasonable in design and strong in practicability; and a long glass fiber reinforced thermoplastic polyurethane material is adopted, thereby greatly improving the rigidity and strength of the material and obviously improving the anti-impact property and heat-resistant property of the material.

The invention discloses a graphene coordinated continuous glass fiber reinforced halogen-free flame-retardant weather-resistant PPO/HIPS alloy material. The material is prepared from the following components in parts by weight: 360 to 480 parts of PPO, 240 to 320 parts of HIPS, 200 to 400 parts of continuous glass fiber, 5 to 15 parts of graphene, 10 to 20 parts of a compatibilizing agent, 50 to 80 parts of a toughening agent, 80 to 120 parts of a flame retardant, 6 to 10 parts of an antioxidant, 3 to 5 parts of a composite light stabilizer, 4 to 8 parts of a lubricant and 5 to 15 parts of metal oxide. According to the invention, through addition of predispersed graphene coordinated continuous glass fiber reinforced PPO/HIPS alloy, and compounding with a variety of functional additives, the material provided by the invention has excellent rigidity, impact toughness, weather resistance and flame-retardant performance; meanwhile, no glass fiber is exposed on the surface of an injection-molded workpiece, so application of glass fiber reinforced PPO/HIPS alloy in different fields can be satisfied; the material can be directly molded through injection molding, so the production efficiency is high; and a used workpiece can be recycled after crushing.

The invention discloses a high-flowability long glass fiber reinforced nylon 6 material. The high-flowability long glass fiber reinforced nylon 6 material is prepared by the following ingredients in parts by weight: 500-700 parts of high-flowability nylon 6, 300-500 parts of continuous glass fiber, 6-10 parts of antioxidant, 4-8 parts of lubricant, and 3-6 parts of compatilizer. The high-flowability long glass fiber reinforced nylon 6 material has higher rigidity and strength, as well as excellent impact resistance property, the surface appearance of injection-moulded parts is good, the material can be directly formed by injection moulding, the production efficiency is high, and the used parts can be recycled after being ground.

The invention relates to a laser transfer printing press. The laser transfer printing press comprises a paper conveyor belt, a film pressing device, a UV (Ultraviolet) solidification device and a paper collection belt. An object to be printed is input from the paper conveyor belt and output from the paper collection belt via the film pressing device and the UV solidification device. The laser transfer printing press further comprises a thin film splicing device, a rolling device and an unrolling device, wherein the thin film splicing device is used for changing an old pre-treated thin film into a new pre-treated thin film when a pre-treated thin film is needed to be changed, and the operative pre-treated thin film is laid on a closed loop formed by the thin film splicing device, the film pressing device and the UV solidification device. With the adoption of the structure, the laser transfer printing press can achieve that a thin film is reused by the film pressing device in an internal circulation way, prevents external dust from reaching the thin film and affecting the service life of the thin film, reduces the loss of the thin film, lowers the risk factor for workers, and is simple in structure and wider in application range.

The invention discloses a reinforced linear gradient doped GaAs planar Gunn diode, which comprises a semiconductor insulated substrate, a high doped bottom N+ layer, a linear gradient doped N layer, an N- layer, a high doped upper surface N+ layer, a table top structure, an upper electrode and a lower electrode, wherein the semiconductor insulated substrate is used for supporting the whole GaAs planar Gunn diode; the high doped bottom N+ layer is epitaxially grown on the semiconductor insulated substrate; the linear gradient doped N layer is continuously epitaxially grown on the bottom N+ layer; the N- layer is epitaxially grown on the linear gradient doped N layer; the high doped upper surface N+ layer is epitaxially grown on the N- layer; the table top structure is formed on the bottom N+ layer and the upper surface N+ layer by two processes of digging and isolating; the upper electrode of ohmic contact is formed by evaporating metal on the upper surface N+ layer; and the lower electrode of ohmic contact is formed by evaporating metal on the bottom N+ layer. The invention discloses a manufacturing method for the reinforced linear gradient doped GaAs planar Gunn diode at the same time. By using the diode, the working frequency of an oscillating circuit in a millimeter wave or sub millimeter wave range is improved, and the conversion efficiency of direct current-to-radio frequency signals is enhanced.

The invention discloses a graphene collaborative continuous glass fiber reinforced halogen-free flame-retardant weather-proof PPO/PA alloy material, wherein the material is prepared from the followingcomponents in parts by weight: 360-480 parts of PPO, 240-320 parts of PA, 200-400 parts of continuous glass fibers, 5-15 parts of graphene, 10-20 parts of a compatilizer, 50-80 parts of a tougheningagent, 80-120 parts of a flame retardant, 6-10 parts of an antioxidant, 3-5 parts of a composite light stabilizer, 4-8 parts of a lubricant, and 5-15 parts of a metal oxide. By addition of a graphenecollaborative continuous glass fiber reinforced PPO/PA alloy subjected to pre-dispersion treatment, and with combination of various functional auxiliary agents, the material not only has excellent rigidity and impact toughness but also has excellent weather resistance and flame retardant performance, the surface of an injection molded preparation part has no glass fibers exposed, the application of the glass fiber reinforced PPO/PA alloy in different fields can be satisfied, the material can be directly molded through injection molding, the production efficiency is high, and the used preparation part after pulverization can be recycled.

The invention discloses a steel wire armored power cable and a processing method thereof. The steel wire armored power cable comprises a cable core. The cable core is provided with an inner lining layer, a steel wire armored layer and an outer sheath layer. The processing method of the steel wire armored power cable comprises the following steps of (1), firstly intertwisting 3-5 insulated wire cores and a filler for forming a cable core through cladding; (2), then wrapping the cable core by the inner lining layer through squeezing; (3), performing armoring, namely performing pre-armoring to the head end of the cable core, and performing supplementary armoring on the back end; and (4), performing pre-twisting of rotating by 3-4 cycles in a steel wire armoring direction when the head end of the outer sheath layer is pulled, keeping a certain tension on the back end and fixing the cable core for preventing untwisting. The steel wire armored power cable performs functions of totally eliminating twisting generated on the steel wire, and eliminating an inner stress of the armored steel wire. After armoring of the steel wire, deformation, loosening and irregularity caused by the inner stress after armoring of the steel wire are prevented. The front end and the back end of the wire core of the finished cable is not limited by an external force, and the effective length of the cable core is ensured through pre-armoring and supplementary armoring.

The invention discloses a low-inertia rotor of a permanent magnet motor, and the rotor is formed in a way that a plurality of rotor core modules are connected in series to a rotating shaft and are compressed together with the rotating shaft. Each iron core module is formed by the stacked welding of a plurality of rotor punching sheets. The rotor is advantageous in that the plurality of rotor punching sheets form one iron core module, which means that the plurality of rotor punching sheets forming one iron core module are welded together, but not riveted together through rivets, thereby avoiding a condition that the head of a rivet or a rivet connector is higher than an end plane of the rotor core module during the riveting. Therefore, the plurality of rotor core modules can be closely attached without gaps after stacking, thereby guaranteeing the effective length of the rotor core, improving the effective utilization rate of the rotor core, and improving the performances of the permanent magnet motor. Meanwhile, the rotor saves lining spacer rings between the adjacent iron core modules, and reduces the cost.

The invention discloses a laboratory VOCs treatment device which comprises a collecting device, and an isolating device is arranged at the top of the collecting device. through cooperation of the collecting device, the isolating device, a transmission device, a feeding device and an adsorption device, the laboratory VOCs treatment device can automatically replace preferentially saturated activatedcarbon on the air source side, it is ensured that the effective length of an activated carbon column is within a safe range, the retention time of waste gas in the activated carbon is long enough, itis ensured that the waste gas is fully purified, purified air can reach the standard, and environmental pollution cannot be caused. People can supplement activated carbon into the feeding device in time through a warning device, the activated carbon can enter the adsorption device more smoothly through cooperation of the transmission device and a rapping device, and the activated carbon can enterthe adsorption device more smoothly. Through a prompt device, people can timely and intensively treat saturated activated carbon in the collecting device, so that the practicability of the laboratoryVOCs treatment device is improved.