84results about How to "High temperature tolerance" patented technology

Heavy weight stretch fabrics comprising ethylene / α-olefin interpolymer are described. The fabric often has a weight of at least 10 ounces per square yard measured according to ASTM 3776 and has a stretch of at least 10 percent measured according to ASTM D3107. These fabrics exhibit excellent chemical, resistance (for example chlorine or caustic resistance) and durability, that is they retain their shape and feel over repeated exposure to processing conditions, such as stone-washing, dye-stripping, PET-dyeing and the like, and industrial laundry conditions.

The invention discloses silicate-based light-weight foam concrete and a preparation method thereof. The silicate-based light-weight foam concrete is prepared from silicate cement, an inorganic admixture, water, a foaming agent and an additive, wherein the mass ratio of the inorganic admixture to the silicate cement is 0.3 to 1.3; the water accounts for 35 to 65 percent by mass; and the foaming agent accounts for 3 to 10 percent by mass. The silicate-based light-weight foam concrete has the beneficial effects that the silicate cement is used as a cementing material; and compared with a sulfoaluminate-based material, the silicate-based light-weight foam concrete has the advantages that the carbonation resistance, the mechanical performance stability, the temperature tolerance and other properties are improved. By adjustment of the contents of all functional components (a thickening time control agent, a foam stabilizer, a water reducing agent, an anti-cracking component, an expanding agent and the like), the silicate-based light-weight foam concrete can conform to various preparation conditions of the silicate cement used as a base material.

A magnetic core of superparamagnetic core shell nanoparticles having a particle size of less than 50 nm; wherein the core is an iron oxide and the shell is a silicon oxide is provided. The magnetic core is a monolithic structure of superparamagnetic core grains of iron oxide directly bonded by the silicon dioxide shells. A method to prepare the magnetic core which allows maintenance of the superparamagnetic state of the nanoparticles is also provided. The magnetic core has little core loss due to hysteresis or eddy current flow.

The invention discloses a multiplex amplification detection kit for detecting 60 loca of autosomes and Y-chromosomes simultaneously. The 60 loca are amplified in a multiplex manner through a polymerase chain reaction, and amplification products of the loca are detected by using a gene sequencer. The kit can be used for detecting the 60 loca of the autosomes and the Y-chromosomes simultaneously, which is a case that most STR loca can be detected by a primary reaction with a capillary electrophoresis method at present, and databases can be built for autosome STR and Y-chromosome STR simultaneously by the primary reaction. The kit has strong adaption to biomaterials, namely, one kit can be used for amplifying various biomaterial samples, wherein different biomaterial samples comprise a male genome DNA extracted by a Chelex100 method, a magnetic bead extracting method or an organic extracting method and male blood or oral cells of human, which is / are collected by any one carrier of filterpaper, an FTA card, a cotton bud, gauze and the like. The kit has higher amplification specificity and higher thermal tolerance.

The invention belongs to the technical field of air compressors, relates to an oil-free compressor used in a locomotive, in particular to an eccentric block-connecting rod reciprocating piston total oil-free lubricated compressor. The oil-free compressor comprises a motor, cylinders, a piston connecting rod assembly, an air valve assembly, cooling fan and the like, wherein, two cylinders are symmetrically arranged above and below a motor shaft, and can also be arranged at the left and the right of the motor shaft, and the two cylinders are coaxial. Connecting rods are sheathed on the motor shaft by a radial ball bearing and an eccentric block, small top end of each connecting rod is provided with two needle roller bearings with an one-side sealed structure, and a crank-connecting rod mechanism drives a piston to realize reciprocating motion in the cylinders. An air inlet valve, a valve plate and an air outlet valve are arranged between the cylinders and cylinder caps, and the valve plate is of a flat-sheet structure, and is provided with an inlet flow channel and an outlet flow channel. The cylinder caps are provided with air inlet chambers and air outlet chambers. The oil-free compressor has the advantages of oil saving, environmental protection, and simple operation and maintenance.

The invention is applicable to the technical field of macromolecular materials and provides a thermoplastic polyurethane composite material and a preparation method thereof. The thermoplastic polyurethane composite material comprises the following components: thermoplastic polyurethane (TPU), basalt fiber, a compatilizer, an antioxidant and a lubricating agent. The thermoplastic polyurethane composite material takes the TPU as a matrix component, and each component generates synergistic effect in a melted extrusion process, so that the thermoplastic polyurethane composite material has high mechanical properties and heat resistance, such as tensile property and notch shock resistance, in particular the tensile property is excellent. The thermoplastic polyurethane composite material is simple in process, takes the basalt fiber serves as a reinforced material and is natural and environment-friendly. The production condition is easy to control, the cost is low, and the requirement on equipment is low, so the thermoplastic polyurethane composite material is suitable for industrialized production.

Superparamagnetic core shell nanoparticles having a core of a iron cobalt ternary alloy and a shell of a silicon oxide directly on the core and a particle size of 2 to 200 nm are provided. Methods to prepare the nanoparticles are also provided.

A multilayered fabric including a first base layer 1 including a polymer 2 exhibiting high temperature tolerance and water resistance, said the polymer being laminated with a cotton and / or polyester layer 3 adapted for comfortable contact with human skin, a second absorptive layer 4 including a moisture absorbent anti-fungal antibacterial layer including hemp and a third layer 5 including a decorative liquid permeable layer wherein said in which the multi-layered fabric is adapted for machine washing and drying.

PCT No. PCT / GB95 / 02626 Sec. 371 Date Sep. 19, 1997 Sec. 102(e) Date Sep. 19, 1997 PCT Filed Nov. 10, 1995 PCT Pub. No. WO96 / 17405 PCT Pub. Date Jun. 6, 1996A method of making an electrical connection stable over a wide temperature range between terminals on a metal or ceramic substrate comprising applying pressure to the connection and ultrasonically welding the terminals together.

The invention discloses Bacillus licheniformis ZL-1 and the application thereof. The Bacillus licheniformis ZL-1 is obtained by isolating and screening from a high-temperature stack of feathers combined with edible fungus residues, the Bacillus licheniformis ZL-1 is preserved at Guangdong Provincial Microorganism Culture Collection Center, with a preservation number of GDMCC No. 60284, the preservation address is 5th floor, Building 59, Compound, No. 100 Xianlie Middle Road, Guangzhou, China, and the preservation date is November 24, 2017. Experiments determine that the Bacillus licheniformisZL-1 can be cultured in a liquid culturing medium with pure feathers for three days, the keratinase activity of the Bacillus licheniformis ZL-1 reaches 52.14 U / ml, and the degradation rate of feathersreaches 90.15%. Further more, the Bacillus licheniformis ZL-1 has good tolerance to high temperature and salinity, can grow well at a temperature of 55 DEC G and is resistant to salinity of 14%, so that the Bacillus licheniformis ZL-1 is used for degrading the feathers, preparing compound amino acid solution, conducting high-temperature compost fermentation by using the feathers as raw materialsand preparing compound amino acid fertilizers and keratinase; the Bacillus licheniformis ZL-1 has good application prospects and market value.

An exhaust particle and particulate containment system for a coffee roaster comprises a filter chamber for exhaust coffee roasting by-products including chaff and smoke particulates and oils is comprised of a screen for separating chaff from the exhaust coffee roasting by-product effluent and a filter for containing chaff and removing smoke particulates and oils when the screen is in a closed position.

A magnetic core of superparamagnetic core shell nanoparticles having a particle size of less than 200 nm; wherein the core is an iron cobalt ternary alloy and the shell is a silicon oxide is provided. The magnetic core is a monolithic structure of superparamagnetic core grains of an iron cobalt ternary alloy directly bonded by the silicon dioxide shells. A method to prepare the magnetic core which allows maintenance of the superparamagnetic state of the nanoparticles is also provided. The magnetic core has little core loss due to hysteresis or eddy current flow.

The invention relates to a preheating system of a plate heat exchanger of a hot blast furnace, which comprises a gas input pipeline, a gas output pipeline, an air input pipeline, an air output pipeline, a hot blast furnace waste gas flue, a chimney, a plurality of heat exchangers, an additional burning furnace, a connecting pipeline and a plurality of valves. The heat exchangers are plate heat exchangers which consist of a plurality of sets of plate bundle modules, the plate bundle modules are formed by laminating convex-concave corrugated partition boards, and pyrogenic fume and low-temperature gas or air reversely flow in a crossed and alternated plate cavity to form respective inlet and outlet. The preheating system ensures the pyrogenic fume and the low-temperature gas or the air directly exchange heat through the plate wall of the partition board without an intermediate heat transfer working substance, the preheating temperature is not limited by the critical temperature and / or critical pressure of the heat transfer working substance, and a metallic material or a ceramic material has high capability of high temperature resistance, so the preheating system of the plate heat exchanger of the hot blast furnace has the advantages of adapting to higher preheating temperature and more complicated preheating process flow, and the like. The preheating system can utilize the plurality of the heat exchangers to perform different combinations to form various preheating systems, meet different preheating requirements and ensure that the preheating system has practicability.

The invention provides a laser welding method. According to the method, a laser welding machine and a circuit board to be welded are provided, a plurality of bonding pads to be welded are arranged on the circuit board, the laser welding machine comprises a focusing head and a tin feeding head, the tin feeding head comprises a tin feeding end, the tin feeding end can feed a tin wire continuously, the tin feeding head is located between the focusing head and the bonding pads, before high-power light of the focusing head exits or while high-power light exits, a section of the tin wire is fed by the tin feeding head, and the tin wire, the focusing head and the bonding pads are located on the same straight line. According to the laser welding method, the welding speed is high, the welding precision is high, the requirement for control equipment is not high, the production cost is low, stability is improved greatly, and the laser welding method has high market value.

The invention discloses a Y-STR compound amplification detection kit marked by a novel fluorescent labeling method and a use method thereof. The Y-STR compound amplification detection kit performs compound amplification of 27 Y-STR loca with a compound amplification primer by adopting a polymerase chain reaction; the amplification product is detected by means of a gene sequencing instrument of a single channel or multichannel capillary tube; 27 Y-STR loca comprise 20 conventional low mutation rate loca and 7 fast mutant loca. The novel fluorescent labeling method comprises the steps of: marking a first alkaline group at the 5' end of the primer by a conventional dye; and marking the sixth alkaline group with a short excitation wavelength fluorescent dye to realize fluorescent energy transfer. The signal strength generated by the method is 3-11 times higher than that of the conventional method, and an amplification result which is more stable and balanced and higher in sensitivity can be obtained.

A transparent low-colour lithium aluminium silicate (LAS) glass ceramic and the use thereof are described, said glass ceramic having an environmentally friendly composition with high-quartz mixed crystals as the main crystal phase and advantageous production features. The glass ceramic contains the following components (in wt% on the basis of oxide): TiO2 1.6 - < 2.5; Nd2O3 0.005 - 0.15; MgO 0.2 - 1.0; ZnO 1 - 2.5; CaO + SrO 0 - 1.5; BaO 0 - 1.5 with the condition B1: MgO + ZnO > CaO + SrO + BaO. The glass ceramic has a hue c* of less than 5.5, a light transmission Y greater than 81% and has no visually disruptive diffusion.

Provided is a poppet valve capable of realizing maximum. combustion efficiency all of three heat transfer forms. In a poppet valve including a head portion (14) formed integrally with one end side of a stem portion (12), in the head portion (14), a hollow portion (19) extending along a head surface (24) is formed, a metal layer (17) that insulates. radiation heat is formed on a upper end surface (25) of the hollow portion (19), and a heat insulating portion is formed between the metal layer (17) and a bottom surface of the hollow portion (19). Among the heat. transfer forms, conduction and convection are insulated by the heat insulating portion, and radiation is insulated by the metal layer (17).

Thermally annealed superparamagnetic core shell nanoparticles of an iron-cobalt alloy core and a silicon dioxide shell having high magnetic saturation are provided. A magnetic core of high magnetic moment obtained by compression sintering the thermally annealed superparamagnetic core shell nanoparticles is also provided. The magnetic core has little core loss due to hysteresis or eddy current flow.

A display device including a frame, a glass light guide plate, an optical film set, a display panel, a reflector, a back plate and an electronic element is provided. The frame has a first connecting surface and a second connecting surface. The glass light guide plate has a first glass surface and a second glass surface opposite to the first glass surface. The first glass surface is connected to the first connecting surface. The optical film set is disposed on the first glass surface. The display panel is disposed on the optical film set. The reflector is disposed under the second glass surface. The back plate is connected to the second connecting surface. The back plate constructs an accommodating space with the frame and the glass light guide plate. The electronic element is connected to the back plate and located in the accommodating space.

The invention aims at disclosing an electromyogram evoked potential instrument, which comprises a main controller, a signal processor and an auxiliary controller, wherein the main controller is used for performing various kinds of signal stimulus on the human body; the signal processor is used for collecting, amplifying and filtering on the human body signals; the main controller and the auxiliary controller are connected and perform data interaction; the signal processor is connected with the main controller; the main controller is also connected with a stimulus device and an isolation power supply; the stimulus device is used for regulating the stimulus current intensity, sound intensity and flash intensity through phase change of two groups of pulse signals and supplying the electricity for equipment; and the auxiliary controller is connected with an operator convenient for operating the equipment. Compared with the prior art, the electromyogram evoked potential instrument has the advantages that the electromyogram and the evoked potential are integrated; the industrial integration professional design is used; the dropping-resistant vibration-resistant and temperature-difference-tolerance degrees are high; the anti-electromagnetic interference capability is high; the fault rate is low; the stability is high; the safety is high; the service life is long; and the goal of the invention is achieved.

The invention belongs to the technical field of chemical production and provides a method for efficiently producing electrolytic manganese metal in an environment-friendly manner. The method provided by the invention takes a vinyl polymer hooked with a thiourea side group as an electrolysis additive, and the electrolysis additive is added into electrolyte containing manganese sulphate and ammonium sulphate for the production of electrolytic manganese, wherein the content of the electrolysis additive in the electrolyte is controlled to be 10-120mg / L. The electrolysis additive is an environment-friendly and non-toxic polymer and can be used for replacing the existing widely applied poisonous or pollutional selenium dioxide and sulphur dioxide; the electrolysis additive is low in solubility and cannot be accumulated in the electrolyte, a production process operation is simple, manganese metal electrolysis efficiency is high, the product purity is high, an electrolysis process is stable, purity requirement to the electrolyte is lower, and electrolytic manganese metal production difficulty and cost are reduced, so that the method provided by the invention has higher popularization and application values.

An insertion type fuse with breakage indication comprises a seat having a long receiving chamber for receiving a metal fuse; an rectangular bi-directional SMD form LED set being located on the buckle portions; the LED set being a coating device and being high temperature tolerant; the LED set being connected to a circuit; the LED including two LEDs and being serially connected with a voltage divided resistor; a fuse wire being connected between the LED set and a load; the LED set being buckled to the buckle portions; when the fuse wire breaks, light will emit out so as to show that the fuse wire breaks; thereby a break fuse can be fined rapidly. In assembly, the seat and the cover are integrally formed. The LED set is adhered to the metal fuse and then the metal fuse is assembled into the long receiving chamber.

The invention discloses an Aeropyrum pernix derived (+)gamma-lactamase, its coding gene and application. The (+)gamma-lactamase provided in the invention is the protein of following (a) or (b): (a) a protein composed of an amino acid residue sequence in SEQ ID No:1 of a sequence table; and (b) an SEQ ID No:1 derived protein that is composed of an amino acid residue sequence obtained by subjecting the SEQ ID No:1 amino acid residue sequence in the sequence table to substitution and / or deletion and / or adding by one or multiple amino acid residues and has racemate gamma-lactam resolution activity. By applying the (+)gamma-lactamase to hydrolytic resolution of the racemate gamma-lactam, (-)gamma-lactam with optical purity of 91.4%-99.9% can be obtained, and the yield is more than 45%.

The invention discloses a preparation method of artificial liposome, belongs to the field of pharmacy, and relates to a preparation method of protein medicament liposome. In the preparation method, nano spherical grain yolk lecithin zirconium or soya bean lecithin zirconium is used as a carrier, and balsam pear protein MAP30, fleece-flower root protein GAP31, lipase CRL or bovine serum albumin (BSA) is used as a wrapping protein. The preparation method comprises the steps of: adding phosphate buffer solution to the carrier material, stirring under the conditions of the temperature being 4 DEG C and rotation rate being 3500rpm to obtain a colorless and transparent dispersion, dissolving the wrapping protein in a phosphate buffer solution, then slowly dropwise adding to the dispersion, quickly stirring in the low-temperature condition to form stable liposome, centrifugally separating out protein, repeatedly washing, centrifuging, and freeze-drying at low temperature to obtain a finished product. The method has the characteristics of simple process, mild condition, high repeatability, high protein adsorption capacity and stable liposome structure.

An identification device, preferably a wristband or adhesive label, is configured to receive identifying indicia by means of a direct thermal printer. A direct thermal layer includes antimicrobial particles embedded therein and is exposed, i.e., does not have a protective overcoat or varnish covering the direct thermal layer. The antimicrobial particles increase the surface available silver ions and are preferably formed of an aqueous dispersion of silver chloride-coated titanium dioxide particles. The antimicrobial particles may also be formed of an inorganic silver-containing compound such as silver zirconium phosphates or a silver substituted zeolite.

The invention provides a catalyst composition for ethylene oligomerization as well as a preparation method and application thereof, and relates to the field of ethylene oligomerization catalysis. The catalyst composition comprises a self-supported metal complex and an aluminum alkyl cocatalyst, the self-supported metal complex is generated through a coordination reaction of a self-supported phosphine-nitrogen ligand and a transition metal, and the self-supported phosphine-nitrogen ligand is obtained by copolymerization of a phosphine-nitrogen ligand monomer containing terminal double bonds and styrene. The invention further discloses an ethylene oligomerization method using the catalyst composition, a three-kettle series oligomerization process is adopted, appropriate reaction conditions are adopted according to the characteristics of different catalysis stages, the retention time of the catalyst is effectively prolonged, and the content of high polymers is reduced. The catalyst is easy to separate from a reaction system, high in temperature tolerance and long in high activity duration, the activity of the catalyst reaches up to 12.5 * 10 < 6 > g / (mol Cr.h), and the total selectivity of 1-hexene and 1-octene exceeds 90%.