9 results about "Ablation" patented technology

The invention discloses a dual-pulse solid rocket engine soft interlayer ablation test device comprising an end combustion powder charging cavity, a test piece ablation cavity, a spray pipe cavity anda center cube connector (5). The end combustion powder charging cavity and the test piece ablation cavity are symmetrically installed at the two ends of a through hole of the center cube connector (5). The spray pipe cavity is connected with the third hole of the center cube connector (5). An end combustion powder charging cavity blocking cap (1), an end combustion powder charging cavity shell (2), the center cube connector (5), a spray pipe cavity shell (6), a spray pipe cavity rear section (9), a test piece ablation cavity shell (11) and a test piece ablation cavity blocking cap (14) of thetest device are all made of high-strength 45 steel material. An end combustion powder charging cavity liner (3), a spray pipe cavity liner (7), a spray pipe cavity rear section liner (10) and a testpiece ablation cavity liner (12) are all made of ethylene propylene terpolymer material. A spray pipe cavity throat liner (8) is made of graphite. Through the dual-pulse solid rocket engine soft interlayer ablation test device, the problems that the work process of a dual-pulse engine ii pulse soft interlayer is difficult to simulate and observe are solved.

The invention discloses an electrode ablation detection tool. The electrode ablation detection tool comprises a base, a horizontal driving mechanism, a supporting plate, an electrode rotation drivingdevice, a paper supporting plate, a probe, a swinging mechanism and a painting brush, wherein the supporting plate is arranged on the horizontal driving mechanism and is driven by the horizontal driving mechanism to slide on the upper side of the base in the horizontal direction, the electrode rotation driving device is fixed at one end of the upper side of the supporting plate, the paper supporting plate is fixed at the other end of the upper side of the supporting plate, the probe is arranged on the swinging mechanism, the painting brush is arranged at the upper portion of the paper supporting plate in the vertical direction, and the upper end of the painting brush is fixed on the probe. According to the invention, the probe extends into the inner hole of the electrode, and when the electrode rotates, the waveform curve is synchronously drawn on the drawing paper by the pen at the tail end of the probe, so that the ablation condition and the accurate position of the inner profile ofthe electrode can be indirectly and intuitively detected, and the accuracy of detecting the ablation condition of the inner profile of the electrode is improved.

The invention discloses a controllable bilateral-deflection perfusion electrophysiologic conduit which comprises at least one section of spirally wound electrode arranged on the conduit body, a grasp part, and a control component mounted in the grasp part and used for driving traction fibers to move. The perfusion electrophysiologic conduit is characterized in that the spirally wound electrode is a hollow electrode tube, a plurality of through holes are formed in the surface of the electrode tube, and the inside of the electrode tube is communicated with an infusion tube for conveying a perfusate; the control component comprises a rotary component whose rotating shaft is perpendicular to the length direction of the grasp part, and a first fixing part and a second fixing part used for fixing the traction fibers respectively are arranged on the rotary component and distributed on two sides of the center line of the grasp part. The electrophysiologic electrode capable of spraying a liquid can improve the perfusion effect effectively, and can improve the safety and the reliability of an ablation catheter; and the device is flexible to control, and can control the conduit body to reach different lesion locations accurately.

The invention discloses a bismaleimide resin/silicone rubber ablation-resistant thermal insulation composite material and a preparation method thereof. The composite material is prepared from the following components in parts by mass: 20-80 parts of methylvinylsilicone rubber, 20-80 parts of methyl vinyl phenyl polysiloxane rubber, 1-5 parts of dicumyl peroxide, 15-40 parts of white carbon black, 5-15 parts of chopped fibers, 5-40 parts of bismaleimide, 1-5 parts of hydroxyl silicone oil and 1-20 parts of zirconium boride. The bismaleimide resin/silicone rubber ablation-resistant thermal insulation composite material has high vulcanization molding quality, and a dense hard carbon layer can be formed on the surface of an ablation layer of the thermal insulation composite material in the ablation process to play a role of preventing the thermal insulation composite material from further ablation, thereby improving the ablation resistance and antioxygenic property of the thermal insulation composite material, enabling the thermal insulation composite material to meet the requirements of operating environments with oxygen enrichment, high temperature, high-speed gas flow and particle erosion, and solving the problem that the thermal insulation material is easy to flaw and be burnt out under the working environments with high temperature, high pressure, oxygen enrichment and particle erosion.

Short-wavelength photons are used to ablate material from a low work function target onto a suitable substrate. The short-wavelength photons are at or below visible wavelength. The elemental composition of the deposit is controlled by the composition of the target and the gaseous environment in which the ablation process is performed. The process is carried out in a deposition chamber to which a short-wavelength laser is mounted and which includes a substrate holder which can be rotated, tilted, heated, or cooled. The target material is mounted onto a holder that spins the target during laser ablation. In addition, the deposition chamber is provided with a vacuum pump, an external gas supply with atomizer and radical generator, a gas generator for producing a flow of molecules on the substrate, and a substrate cleaning device, such as an ion gun. The substrate can be rotated and tilted, for example, whereby only the tip of an emitter can be coated with a low work function material.

The invention discloses a clutch. The clutch comprises a driving shaft, a driven shaft, and a transmission part static relative to the peripheral direction of the driven shaft or the driving shaft; the driven shaft and the driving shaft are embedded, and a closed first inner cavity is defined by the driving shaft, the driven shaft and the transmission part; the first inner cavity is provided with a first valve; in a closed state of the first valve, the driving shaft is rotated to compress a medium in the first inner cavity to push the driven shaft to rotate; and in an open state of the first valve, when the driving shaft rotates, the driven shaft can be kept static. The clutch realizes the engaging and disengaging function through gentle motion of the medium in the first inner cavity; and acute friction heating cannot be generated in the engaging and disengaging process, so that the friction ablation problem is prevented, the service life of the clutch is effectively prolonged, and the energy loss is reduced. Meanwhile, the clutch needs no special clutching hydraulic mechanism, can realize automatic control of a harness, and is simple and reliable in structure. The invention further discloses a vehicle comprising the clutch; and the same technical effects are achieved.

The invention discloses a preparation method for solar blind type deep ultraviolet plasma resonance nanoparticles. A laser liquid phase ablation device is adopted. A laser liquid phase ablation methodis used for preparing metal nanoparticles with a local area surface plasma resonance effect; the preparation method is simple; and a reaction product is pure, so that impurities are not easily introduced. Ascorbic acid is introduced as a carbon source, so that the metal nanoparticles can be wrapped with a carbon layer with a certain thickness, and the stability and oxidation resistance of the product can be effectively improved. The experimental controllability is high. By adjusting laser energy and ablation time, the particle size and the oxidation degree of the metal nanoparticles can be regulated and controlled. The prepared metal nanoparticles can be used for enhancing the light absorption of light (240-260nm) in the extremely deep ultraviolet waveband.

The invention discloses a high-thermal-conductive composite material and a preparation method thereof. The composite material is prepared from the following raw material components in percentage by mass: 10 to 70% of thermal-conductive filler, 10 to 50% of a polymer matrix, and 1 to 40% of calcium carbonate. The preparation method comprises the following steps: taking a calcium chloride solution in a container, dropwise adding a polyacrylic acid solution, magnetically stirring at room temperature until uniform, then adding the thermal-conductive filler, continuously stirring, ultrasonically mixing until uniform and then adding a sodium carbonate solution, standing for several hours, then performing centrifugal separation to remove supernatant liquid to obtain a flexible composite material, moulding and then performing vacuum freeze drying, then performing high-temperature ablation under inert atmosphere to form a three-dimensional thermal-conductive skeleton structure, and finally performing vacuum assisted perfusion of the polymer matrix for curing and moulding. The thermal conductivity of the composite material disclosed by the invention can reach 10 Wm<-1>k<-1> or above, and the composite material can be used as heat dissipating materials for high-power devices.