37results about How to "No high temperature resistance" patented technology

The invention provides hydroxypropyl hydroxylamine and a synthesizing method thereof, and belongs to the technical field of organic synthesis. The hydroxypropyl hydroxylamine synthesized by the synthesizing method can be used as a styrene polymerization inhibitor, and can be effectively used for inhibiting generation of polystyrene and blockage of polystyrene on pipelines and equipment in the process of producing styrene. According to the technical scheme, the method comprises the following steps: (1) adding substituted hydroxylamine and a solvent in a reactor, adding an alkali liquor into the reactor after the substituted hydroxylamine is completely dissolved, sufficiently stirring for 1-8 hours under ice bath; (2) adding alkylene oxide into the reactor, removing the ice bath, and sufficiently stirring for 10-36 hours to obtain a mixed product; and (3) performing rotary evaporation on the mixed product, extracting the rotary-evaporated product by utilizing an extracting agent, sufficiently stirring, standing at 0-20 DEG C for 1-10 hours, and filtering to obtain a clear transparent solution, and removing the extracting agent in the clear transparent solution to obtain the hydroxypropyl hydroxylamine. The hydroxypropyl hydroxylamine can be applied to continuous production of styrene.

The invention discloses a carbon fiber composite material cable and a preparation method of a cable core of the carbon fiber composite material cable. The preparation method comprises the following steps: testing and adjusting the tensile forces of carbon fibers and glass fibers; dewatering; pulling the carbon fibers into a procuring die (3) by infiltrating adhesive in a constant temperature adhesive groove; operating the glass fibers to pass through a rectangular splitting plate (4); pulling the carbon fibers into a curing die (5); feeding the glass fibers through a planar guide plate (6), and then puling into the curing die (5) so as to wrap the surrounding parts of the carbon fibers with the glass fibers, thus obtaining the carbon fiber composite material cable core. The method provided by the invention has high operability and relatively high production efficiency, can saves large amount of manpower and materials, and has low cost of production; and the carbon fiber composite material cable core prepared by the method has relatively high linearity, high roundness, no eccentricity, no bending, and high consistency in color; and as the detecting results shown, the carbon fiber composite material cable core has the advantages of high temperature resistance, lower energy consumption, long service life, no eccentricity, and good performance.

The invention discloses a hollow ball foamed aluminum material, a preparation method of the hollow ball foamed aluminum material and filling spheres used by the preparation method. The hollow ball foamed aluminum material comprises multiple hollow balls which are connected with each other and have individual bubbles and communicated holes are formed between the hollow balls so that an open pore-close pore mixed structure is formed. The preparation method comprises the following steps of preparing the core-shell filling spheres comprising 10-15% of charcoal as a core, 30-45% of sepiolite, 35-40% of sodium bentonite and 10-15% of vermiculite powder as a coating, putting the spheres into a mold so that the spheres are compact, carrying out molten aluminum transfusion according to a weight ratio of the filling spheres to the molten aluminum of 1: 3 to 1: 4, carrying out gas exhaust at the bottom side of the mold by a vacuum pump so that the molten aluminum permeates into gaps between the hollow filling spheres, carrying out cooling, removing the mold, and carrying out cleaning by water to obtain the hollow ball foamed aluminum material. The hollow ball foamed aluminum material solves the problem that the existing material is cleaned difficultly and is heated for a long time, greatly reduces energy consumption and effectively improves anti-compression performances and sound-absorbing effects.

The invention relates to the field of injection moulds, and aims to provide an automobile bright decorating strip type side corner window injection mould. The automobile bright decorating strip type side corner window injection mould comprises an upper mould and a lower mould, a main cavity formed by the upper mould and the lower mould in a surrounding manner, and a decorating strip cavity communicated with one side edge of the main cavity; the bottom surface of the main cavity is provided with a triangle glass support ring, and the top surface of the main cavity is provided with a triangle glass pressing ring which is corresponding to the triangle glass support ring; the bottom surface of the decorating strip cavity is provided with at least one supporting block, at least one magnetic fixed block is inlaid the outer side edge of the decorating strip cavity, and the bottom surface of the main cavity is provided with a plurality of mounting screw positioning counter bores formed in the outer side of the triangle glass support ring. The automobile bright decorating strip type side corner window injection mould provided by the invention has the advantages that the fixed efficiency of a bright decorating strip is relatively high, and the position is exact.

The invention provides carbon quantum dot composite nanoparticles, and a carbon quantum dot / fluoride composite material, a preparation method and applications thereof, wherein carbon quantum dots arecompounded into the interior of fluoride crystals in carbon quantum dot / fluoride composite nanoparticles, such that the carbon quantum dots can achieve the advantages of solid-state light emitting, notoxicity, high-temperature resistance, decomposition resistance and good stability, and can absorb UV and be converted into blue light required for plants. The invention further provides a one-step preparation scheme of the carbon quantum dot / fluoride composite nanoparticles, wherein the one-step preparation scheme has characteristics of simple process and low cost, and is suitable for industrialproduction. The invention further provides a carbon quantum dot / fluoride / polymer composite material, which compounds the carbon quantum dot / fluoride nanoparticles and a polymer material, has high transparency, and further has light conversion, toughening or anti-aging effect, wherein the preparation method is simple and easy-performing, can be used for the preparation of agricultural films or rubber products, and has good industrialization prospect.

The invention relates to a sliding bearing, belonging to the technical field of bearing monitoring and new energy. It includes inner and outer rings, baffles, shields, sensors and circuit boards. The outer ring consists of an outer ring body and an outer electrode. The outer electrode consists of an outer pole ring, an outer pole finger and an outer terminal. The outer pole finger is placed inside the outer ring body. ; The inner ring consists of an inner ring body and an inner electrode, the inner electrode consists of an inner pole ring and an inner pole finger, the inner pole finger is placed inside the inner ring body, and the electrode ring is in sliding contact with the inner pole ring through the conductive block; The number and central angle of the inner and outer rings are equal; the materials of the inner and outer rings are two kinds of polymer materials whose triboelectric sequences are far apart. A potential difference is generated between the inner and outer pole fingers; the inner and outer pole fingers alternately overlap and separate in the circumferential direction, so that the potential difference between the inner and outer electrodes alternately increases and decreases, converting mechanical energy into electrical energy, and the generated electrical energy is processed and supplied to the sensor and information transmission system.

The invention discloses a magnetic sterilizing heat-insulation coating and a preparation method thereof. The magnetic sterilizing heat-insulation coating is prepared from, by weight percent, 15-30% of acrylic emulsion, 8-15% of hollow glass beads, 8-18% of magnetic-wave absorbing-sterilizing assistant, 8-18% of SiO2 based heat insulation composite fiber, 5-10% of rutile titanium dioxide, 5-10% of sea-foam stone powder, 5-10% of calcined kaolin, 1-2% of dispersing agent, 1-2% of anti-foaming agent, 2-5% of thickening agent, and 15-30% of water. Through nanometer modified technology, the magnetic-wave absorbing-sterilizing assistant and the SiO2 based heat insulation composite fiber are introduced to a heat-insulation coating domain, thus the multifunctional property of the heat-insulation coating is significantly widened; the coating has relatively ideal heat insulation effect while is toxic-free, odor-free, magnetic, wave-absorbable, green and environment-friendly, sterilized, self-cleaning, fire-proof and flame-retarding, and heat-resisting, and other functions; besides, the magnetic sterilizing heat-insulation coating has good market application prospect in the field of internal and external wall coatings of a building.

The invention discloses a telescoping underground pipeline leakage warning system on the basis of fiber gratings and a method implemented by the telescoping underground pipeline leakage warning system. The telescoping underground pipeline leakage warning system comprises an underground pipeline, fiber grating sensors, a transmission optical cable and mark belts. A protective sleeve sleeves the transmission optical cable, sensor holes are formed in the outer wall of the bottom of the protective sleeve, and the fiber grating sensors extend out of the protective sleeve via the sensor holes and are fixed onto the outer wall of the underground pipeline; the mark belts are buried between the upper side of the underground pipeline and the earth surface, bent portions are arranged on each mark belt at intervals, and chip assemblies are arranged on the mark belts; a well is arranged at a position corresponding to each fiber grating sensor, so that the fiber grating sensors and the transmission optical cable can be conveniently replaced and maintained. The telescoping underground pipeline leakage warning system and the method have the advantages that the fiber grating sensors include fiber grating strain sensors and fiber grating temperature sensors which are connected with one another in parallel, strain and the temperature of the outer wall of the underground pipeline are simultaneously monitored at each monitoring point, leakage events can be two-dimensionally responded, and accordingly leakage potential hazards of an underground pipe network can be accurately and effectively monitored.

Provided is a method for relieving shrinkage of an alkali slag binding material. The invention relates to the method for relieving the shrinkage of the binding material, and aims to solve the problems that the shrinkage of the alkali slag binding material is big and the application and popularization of the alkali slag binding material are limited. On the premise that high strength and good resistance to high temperature of the alkali slag binding material are not influenced, the method for relieving the shrinkage of the alkali slag binding material is achieved. The method comprises the steps of conducting preparatory work; preparing neat paste of the alkali slag binding material; conducting sample maintaining; conducting sample crushing; preparing a component of the alkali slag binding material. The method for relieving the shrinkage of the alkali slag binding material is used in the technical field of civil engineering materials.

A method for preparing high-purity silicon by an energy-saving and environmental protection technology comprises the following steps: uniformly mixing quartz sand or white carbon black and a reducing agent according to the weight ratio of (0.8-1.2): (1.2-1.6) to obtain a mixture, putting the mixture into a heating furnace with furnace chamber volume being 10-30 liters; spraying carbon powder of 100-325 meshes onto the surface of the mixture with the mass ratio of the carbon power to the mixture being (0.1-0.5): (2.0-2.8); heating the furnace chamber of the heating furnace to 200-260 DEG C for 0.5-1 h, and carrying out thermal insulation for 1-2h; heating the furnace chamber of the heating furnace to 300-400 DEG C for 0.5-1 h, and carrying out thermal reaction for 3-6 h to obtain a reaction product; cooling the reaction product to room temperature, washing the reaction product with normal-temperature distilled water for several times to obtain a washed product; and drying the washed product at the temperature of 90-110 DEG C to obtain elemental silicon. The method is green and environmentally friendly, has advantages of low energy consumption, simple process, low cost and few and simple equipment, and is easy to use at large scale in the industry. In addition, purity of the prepared elemental silicon is high.