32results about How to "No impact resistance" patented technology

The invention discloses a composite phase-change energy storage material for microcapsules and a preparation method thereof. The coating of the microcapsule is made of silicon dioxide, and the core of the microcapsule is made of a phase-change energy storage material, wherein the phase-change energy storage material is a paraffin organic solid-liquid phase-change energy storage material. 0.2 to 0.5 wt.% of dispersed emulsifier, 52.5 to 62.5 wt.% of solvent water, 18.75 to 31.5 wt.% of phase-change energy storage material and 15.5 to 18.75 wt.% of inorganic silica source are matched and put into a reactor for stirring for 5 to 8 hours; the mixture is uniformly dispersed and emulsified at the temperature 3 to 8 DEG C higher than that for solid-liquid phase change; hydrochloric acid aqueous solution catalyst with the pH value of 0.93 to 4.07 or sodium hydroxide aqueous solution catalyst with the pH value of 8.0 to 12.0 is added into the emulsion; the reacting solution is naturally cooledto room temperature and precipitation solution is obtained; the precipitate is washed with the combination of water and petroleum ether, wherein the mass percent of the petroleum ether is 30 wt.%; then the precipitate is washed with deionized water and is filtered, and the product is naturally aired. The invention improves the technology of phase-change energy storage and conservation, and has the function of automatic temperature regulation, favorable physical and chemical stability, crack resistance, flame retardancy, wear resistance and high thermal conductivity.

The invention relates to an underground mud generator, the main structure of which is as follows: a turbine is connected to an outer magnetic rotor of a magnetic coupling through a cushion double wallsleeve; an annular groove is arranged in the middle part of the inside wall of the cushion double wall sleeve; a buffer plunger is contained in the annular groove; one of the buffer plunger and the cushion double wall sleeve is a magnet; the center of the buffer plunger is connected to two ends of a stator plunger rod; one end of the stator plunger rod is connected to a seal housing of the generator, while the other end passes through the center of the turbine and is connected to a supporter; an inner magnetic rotor of the magnetic coupling is positioned in an outer magnetic rotor drum of themagnetic coupling, and the both are isolated by the seal housing; the inner magnetic rotor is provided with a necking cavity; one end of a suspended shaft is arranged in the necking cavity, while theother end is connected to the rotor of the generator body; and the seal housing encloses the generator body, the inner magnetic rotor of the magnetic coupling and the suspended shaft. The undergroundmud generator has the advantages of no-sealing, zero leakage and shock proof, and supplies steady electricity for logging-while-drilling instruments underground in a high temperature and high pressure environment.

The invention relates to an LED dimming device which is applicable to a controllable silicon dimmer. The LED dimming device comprises a rectifier, a fictitious load circuit, a zero-crossing detection circuit, a high frequency transformer, a main power supply drive integrated circuit, a secondary rectification and filter circuit, a secondary power supply drive integrated circuit and an average voltage detection circuit. The invention has the beneficial effect that the LED dimming device is capable of realizing the brightness adjustment of an LED lamp by the controllable silicon dimmer and has the advantages of good dimming effect, long service life, simple structure and environmental protection and energy saving.

The invention discloses a clamping force measuring instrument and a clamping force measuring method, which are used for measuring clamping force of a clamp. The clamping force measuring instrument comprises a replaceable standard block, a spring, a clamping force indicating mechanism and a tension mechanism, wherein the standard block is suitable to be clamped by different clamps; the clamping force indicating mechanism is used for displaying magnitude of the clamping force; the tension mechanism is used for producing tension; the standard block is fixedly connected with the spring; the spring is fixedly connected with the clamping force indicating mechanism; the clamping force indicating mechanism is fixedly connected with the tension mechanism; and an indicated numerical value of the clamping force indicating mechanism is directly proportional to deformation of the spring. The invention provides a pure mechanical clamping force measuring instrument; force for pulling the standard block which is clamped in the clamp out is produced through the tension mechanism; the tension produced by the tension mechanism is intuitively indicated in the indicating mechanism through the deformation of the spring; an accurate measuring result of the clamping force of the clamp is achieved; and the instrument and the method are suitable for maintaining various clamps in a printed circuit board(PCB) industry.

The invention relates to a method for preparing a novel cold storage installation composite board for ships. The method comprises the following steps: manufacturing an upper protective layer and a lower base material layer according to the dimension of the composite board, heating and mixing an expandable modified phenolic resin, a surfactant, a foaming agent, a curing agent and an auxiliary at the temperature of 25-60 DEG C, spraying the mixture between the upper protective layer and the lower base material layer through a high-pressure spray gun, emulsifying, forming and holding the temperature for 24 hours through equipment of a continuous production line, and demoulding, thereby obtaining the composite tube, wherein the mass ratio of expandable modified phenolic resin to the surfactant to the foaming agent to the curing agent to the auxiliary is 100:4:5:25:5; the surfactant is a general surfactant of silicane and tween series; the foaming agent is a NaCO or metal powder general solid foaming agent; the curing agent is hydrochloric acid or sulfuric acid or phosphoric acid; the auxiliary is boracic acid or urea or antimony oxide.

The invention relates to a thyristor phase switch testing device, the comprehensive microprocessor and thyristor technique are used in the device; the projection angle of switch is operated by the drive pulse phase of the thyristor. The device includes: host CPU, acquisition circuit of input-output signal, switch power supply, input-output interface, touching screen communication, upper machine communication, CPLD signal processing circuit, thyristor trigger circuit, power return circuit and thyristor; the electrical signal transitive relation is: the thyristor trigger circuit triggers the thyristor, the signal is transmitted to the acquisition circuit, processed by the host CPU, and separately transmitted to the touching screen communication, the upper machine communication and the input-output interface, the CPLD signal processing circuit and switch power supply provide power for the host CPU, thyristor and power return circuit, and the signal is output.

A corrugated foil type air dynamic pressure bearing. It includes a shoulder, a bearing shell, a flat foil and multiple corrugated foils; the shoulder is formed by extending radially outward from one end edge of the bearing shell; multiple flat foils are arranged side by side, and two adjacent flat foils The side edges overlap each other; the corrugated foils are provided with two kinds of corrugations alternately arranged with different radii of curvature, one side is attached to the outer surface of all flat foils, and the other side is fixed on the inner circumferential surface of the bearing housing On the top, one end of the flat foil and multiple corrugated foils is fixed on the inner circumferential surface of the bearing housing at the same time, and the other end is a free end. The invention can replace the ball bearings on small commercial aircraft, reduce the weight of the engine, and can replace the traditional lubricating oil lubrication with gas lubrication. When the engine is in the working state, because the upper wedge gap is small and the dynamic pressure effect is strong, it can provide The bearing capacity is equivalent to the rigid surface gas dynamic pressure bearing, which can greatly reduce the friction force, resistance and vibration of the bearing, and increase the working stability of the engine.

A rib-shaped guiderail panel comprising a beam panel (100) and a rib panel (200). The rib panel (200) is arranged on a panel face of the beam panel (100) and is arranged integrally with the beam panel (100). The beam panel (100) and the rib panel (200) extend along the lengthwise direction of the guiderail panel. The beam panel (100) is a thermoplastic composite panel or a thermoplastic material panel. The rib panel (200) is a thermoplastic composite panel. The thermoplastic composite panel comprises a reinforced skeleton (4), while the reinforced skeleton (4) is covered thereout with a thermoplastic material layer. The rib-shaped guiderail panel is corrosion-resistant, has a simplified manufacturing process, and ensures vehicle and personnel safety by adsorbing impact energies.

The invention discloses an LED ultraviolet sterilization rod which comprises a housing, at least one ultraviolet LED light source, a light source circuit board, a light source constant current source, a control circuit, a control circuit board, a time controller, a charging lithium cell, a charging controller, a work indicating lamp, a liquid crystal display, a time control switch, a pause / switch, a front cover and a DC charger jack. The front cover, the light source circuit board, the control circuit board, the charging lithium cell and the charging controller are sequentially installed on the housing from top to bottom. The ultraviolet LED light source and the light source constant current source are disposed on the light source circuit board, wherein the light source constant current source is arranged on one side of the ultraviolet LED light source. The control circuit, the time controller, the work indicating lamp, the liquid crystal display, the time control switch and the pause / switch are sequentially arranged on the control circuit board from top to bottom. The DC charger jack is disposed in the charging controller. The beneficial effects are that the LED ultraviolet sterilization rod generates no noise, is high in stability, safe, environmentally friendly and energy-saving, and is suitable for use on all occasions.

The invention discloses a combined no-leakage liquid discharging baffle. The combined no-leakage liquid discharging baffle comprises a liquid discharging baffle (1), a rolling column (2) and a rectangular diaphragm (3), wherein the rolling column (2) is sheathed on the liquid discharging baffle (1); the upper end of the liquid discharging baffle (1) is provided with the rectangular diaphragm (3).

The invention discloses a composition brake shoe for a railway freight car, and a method for manufacturing the same. A friction piece of the composition brake shoe for the railway freight car is synthetised by using following materials by weight parts: 6-10 parts of nitrile rubber, 2-8 parts of modified phenolic resin, 3-6 parts of steel wool fibers, 9-16 parts of sepiolite fibers, 2-16 parts of composite mineral fibers, 5-13 parts of graphite, 0.4-2 parts of calcined bauxite, 20-24 parts of barium sulfate, 8-12 parts of potassium feldspar powder, 10-20 parts of iron powder, and 1-3 parts of additives. The friction piece of the composition brake shoe is formed through the steps of dosing, banburying or mixing, crashing, hot press molding and curing forming, and thermal processing. The composition brake shoe is capable of well satisfying various performance indexes requested in PRC (People's Republic of China) railway industrial standard TB / T2403-2010, and can be applied to railway freight cars traveling at the highest speed of 120km / h and axle load of the composition brake shoe is not greater than 25 tons; besides, the composition brake shoe has stable friction properties and excellent friction resistance, and is low in attrition to wheels and low in braking noise; and as a result, potential quality hazards ( such as brake shoe body breakage, slag and block dropping, metal inlaying and hot cracks) endangering traveling safety are fundamentally solved.