76results about How to "Wide application temperature range" patented technology

The invention discloses a low-phase-transition-temperature heat storage material and a preparation method thereof. The low-phase-transition-temperature heat storage material comprises the following components in parts by weight: 55 to 93 parts of sodium acetate trihydrate, 1 to 40 parts of a temperature regulator, 2 to 6 parts of deionized water, 1 to 2 parts of a thickener, and 2 to 3 parts of a nucleating agent. The phase transition heat storage material provided by the invention has the adjustable phase transition temperature of 35 to 56 DEG C, and the phase transition latent heat of 200 to 280 kJ/kg. The application temperature range of a sodium acetate trihydrate system is expanded, and the phase transition heat storage material provided by the invention belongs to solid-liquid phase transition, has high heat storage density and can be effectively applied to the field of civil life.

The invention provides a thermoplastic vulcanizate (TPV) magnetic door seal and a manufacture method thereof. The TPV magnetic door seal comprises a TPV elastomer door seal rubber sleeve which is composed of ethylene-propylene-diene monomer (EPDM), polypropylene, naphthenic oil, cross-linking agents, lubricants and fillers. The TPV magnetic door seal contains highly vulcanized EPDM particles, so that the TPV magnetic door seal has good elasticity, compression deformation resistance and ageing resistance, and the application temperature range is wide (ranging from -60 DEG C to 150 DEG C). The TPV magnetic door seal has excellent using stability, prevents the phenomena of infirm sealing, cold leakage and the like, improves mechanical property and prolongs the service life.

Disclosed is a preparation method of silicon separation membrane, having specific selectivity to natural products, which belongs to a membrane preparation technique. The method comprises: dissolving a template agent into an alcohol solution to produce template agent solution, then, adding functional monomers into said produced solution, adding in stabilizer, condensing and refluxing to remove the solvent and produce a silane precursor, dissolving tetraethoxysilane into the alcohol solution, adding in the silane precursor followed by condensing and refluxing to prepare a sol, next, aging at room temperature and dipping treated Al2O3 plate into the sol, finally, sintering in a muffle, eluting the template agent and drying to produce silicon separation membrane. The present invention is characterized in simple preparation, the produced separation membrane realizing selectively separation of a certain substance in molecular scale, water-phase molecule recognition, particularly fit for natural products separation and extensive general uses.

The invention discloses rare earth element-doped bismuth layer-structured multifunctional materials and a preparation method thereof. The general chemical formula of the multifunctional materials is Bi(3-x-y-z)ErxYbyRzTi(1.5-0.5x1)W(0.5-0.5x1-x2)Mx1Mox2Ox3, wherein x is more than 0 and not more than 40 mol%, y is not less than 0, z is not less than 0 and not more than 40 mol%, x1 and x2 are more than 0 and not more than 30 mol%, x3 is not less than 8 and not more than 10, R is one or more of La, Li, Ce, Pr and Y, and M is one or more of Nb, Ta, Zr, Hf, Cr and Mn. The multifunctional materials prepared in the invention have the advantages of good ferroelectric/piezoelectric properties, high Curie point, high high-temperature thermal stability, high chemical durability, excellent up-conversion luminescence performance, excellent optical temperature sensing performance, high sensitivity and wide application temperature range, and has wide application prospects in the fields of optical temperature sensor, bio-molecular fluorescence labeling, infrared detection and anti-fake, luminescence displays and photoelectric integration.

The invention relates to a preparation method of a high-performance room temperature complex-phase magnetic cooling material. The complex-phase magnetic cooling material comprises amorphous ferrous alloy and crystalline rare earth based alloy. The preparation method comprises the following steps of: (1) preparing the amorphous ferrous alloy by adopting a melt-spun process, mechanically crushing and then carrying out ball milling to prepare powder; (2) preparing the crystalline rare earth based alloy by adopting an ingot casting process, a fast-hardening and strip-casting process or a melt-spun process, mechanically crushing after heat treatment, and then carrying out ball milling to prepare powder; or preparing alloy powder by directly adopting a mechanical alloying process; (3) evenly mixing the amorphous ferrous alloy powder and the crystalline rare earth based alloy powder in the protection atmosphere or vacuum; (4) carrying out compression molding on mixed powder in the protection atmosphere or vacuum; and (5) preparing a pressed blank into amorphous/crystalline complex-phase blocky alloy by adopting a rapid sintering process below the crystallization temperature and in the protection atmosphere or vacuum. The prepared complex-phase magnetic cooling material has high magneto-thermal performance, high decay resistance performance, low hysteresis lag and cost and simple process, and is suitable for large-scale batch production.

The invention discloses an oil well sulfate scale inhibitor as well as a preparation method and application thereof. The inhibitor comprises the following components in percentage by weight: 35-45 percent of polycarboxylic acid polymer, 25-35 percent of polyaspartic acid, 10-15 percent of hydrolytic polymaleic anhydride, 15-20 percent of 2-thiol imidazoline and 2-5 percent of ethylene diamine tetra-methylene phosphonic acid sodium. The inhibitor disclosed by the invention is in liquid state, has a good inhibition effect on BaSO4 and SrSO3 scales and contains low-content phosphine; the components are easy to be biodegraded and a good environmental protection performance is achieved; the application temperature range is wide; the usage temperature is as high as 100 DEG C.

The invention relates to a low-resistivity pyroelectric ceramic material with temperature ageing resistance and a preparation method thereof. According to the invention, the chemical composition of the pyroelectric ceramic material is mainly as follows: Pb1+delta (Sb2/3Mn1/3)y(ZrxTi1-x)1-yO3+wat%A; and in the formula, A is at least one selected from Mn and Cr; delta is -0.05 to 0.05; w is 0-10 (preferably 0-2); x is 0.75-0.90; and y is 0.01-0.25.

The invention relates to a melilite structure crystal zero/ near-zero frequency temperature coefficient cut and a processing method and application thereof. The melilite structure crystal zero/ near-zero frequency temperature coefficient cut adopts a melilite structure piezo-electric crystal, and the general formula of the melilite structure piezo-electric crystal is (A<1>A<2>)2{(B<1>B<2>)(C<1>C<2>)}3O7, wherein A<1>= Ca, Sr, Ba; A<2>= La, Nd, Pr, Sm, Gd; B<1>=Mg, Zn; B<2>=Al, Ga; C<1>=Al, Ga; and C<2>=Si, Ge. The melilite structure crystal zero/ near-zero frequency temperature coefficient cut is wide in application temperature range and can be applied within 20-600 DEG C; and frequency-temperature stability can reach -10 ppm/DEG C.

The invention discloses a shielding cable for an environment-friendly car. A thermoplasticity irradiation vulcanized rubber insulation layer is arranged on the outer layer of a copper core soft conductor to form an insulation wire core, a plurality of insulation wire cores are stranded to form a cable wire, filling layers are arranged at gaps of the cable core, a belt wrapping layer, an inner shielding layer and an outer shielding layer are arranged on the outer portions of the filling layers and the cable core in sequence, and an outer protecting sleeve layer is arranged on the outermost layer of a cable. The filling layers are low-smoke-zero-halogen filling ropes. The inner shielding layer is a tinned copper wire braid shielding layer. The outer shielding is an aluminum foil lapping shielding layer. The outer protecting sleeve layer is a 125-DEG-C low-smoke-zero-halogen flame-retarding elastic body protecting sleeve layer. The shielding cable for the environment-friendly car has flame-retarding performance, high-temperature-resisting performance, low-temperature-resisting performance, acid-base-resisting performance, oil-water-resisting performance, anti-tearing performance, softness and environment-protecting performance.

The invention discloses a high-flexibility anti-bending robot cable. A power system unit and a control system unit are stranded into a cable conductor; a cotton rope filling layer is arranged in a gap of the cable conductor; an aluminium foil shielding layer and a shielding layer woven with tinned copper wires are sequentially wrapped outside the cable core and the cotton rope filling layer; a thermoplastic elastomer outer sheath is extruded on the outermost layer of the cable; and each of the power system unit and the control system unit is formed by a conductor and a polyvinyl chloride insulation layer extruded on the outer layer of the conductor. The invention provides the high-flexibility anti-bending robot cable which has high flexibility, bending resistance, high wear resistance, anti-interference capacity, resistance to acid and alkali, oil-water resistance, tear resistance, high toughness, aging resistance and excellent weather resistance and simultaneously also has excellent electrical insulation property and environment-friendly performance.

Provided is a fluid resistance reduction composition comprising: a nitrite, an interfacial agent, a corresponding ionic compound, an electrolyte and an aqueous phase medium. Therefore, the fluid resistance reduction composition provided in the present invention is capable of effectively reducing fluid resistance and lowering energy consumption, thereby indirectly reducing carbon emission.

The invention discloses a pyroelectric ceramic material and a preparation method thereof. The pyroelectric ceramic material has the following general formula: (Pb[1+delta])(Mg1/3Nb2/3)z(ZrxSn[1-x-y]Tiy)[1-z]O3+w at.%A, wherein delta is more than 0 and less than or equal to 0.05, w is more than 0 and less than or equal to 10, x is more than or equal to 0.75 and less than or equal to 0.90, y is more than or equal to 0.10 and less than or equal to 0.25, and z is more than or equal to 0.01 and less than or equal to 0.10; A is any or a combination of more than two of Fe, Cr and Mn. The preparation method of the pyroelectric ceramic material comprises the following steps of: synthesizing ceramic powder; preparing a ceramic green body; sintering; plating a Ni electrode with a chemical method; and polarizing in silicon oil. The pyroelectric ceramic material disclosed by the invention has stable and moderate pyroelectric coefficient, low dielectric constant, low dielectric loss and adjustable resistance in a great range, and is hopeful to be applied to the field of non-refrigeration infrared detection.

The invention relates to an ultra-lightweight and high wear-resistant rubber-plastic sole and a preparation process thereof. The ultra-lightweight and high wear-resistant rubber-plastic sole is prepared from the following two components in parts by weight: 70-80% of rubber-plastic composition and 22-28% of rubber-plastic auxiliary agent. The rubber-plastic composition is prepared from 65-70% of ethylene-vinyl acetate copolymer (EVA), 15-18% of isoprene rubber (IR), and 15-18% of block olefin copolymer (BOC); and the rubber-plastic auxiliary agent is prepared from 48-52% of anti-wear agent, 22-28% of filler, 1.2-1.8% of vulcanization accelerator, 2.2-2.8% of vulcanization active agent, 3-4% of active agent, 2.0-2.5% of cross-linking agent, 7.5-9.0% of foaming agent and 7-8% of chromogenic agent. The preparation process of rubber particles comprises the steps of putting the rubber-plastic composition and the rubber-plastic auxiliary agent except for the foaming agent and the cross-linking agent according to a formula amount into an internal mixer for mixing, then adding the foaming agent and the cross-linking agent, and subjecting the mixture to smelting, tableting, and extrusion granulation to form ultra-lightweight and wear-resistant rubber-plastic particles; the molding process of the sole comprises injection molding and vulcanization molding based on a mold.

Nickel-cobalt-potassium crystal sulfate hexahydrate crystal for ultraviolet light band filter has molecular formula: K2CoO.1Ni0.1Ni0.9(SO4)2.6H2O, molecular weight is 437.15monoclinic space group P2(1)/C, crystal cell parameter a=6.1390(3), b=12.1839(6), c=9.0095(4), alpha=gamma=90degree, beta=105.062(2)degree, v=650.74(5), 3,Z=2, DC=2.231g/cm3. It has high transmittance and visible-light absorbing function, and it could real-time observe and control growth process in saturated solution and realized crystal growth by solution temperature-decreasing method.

The invention belongs to the technical field of scroll compressors, and discloses a scroll compressor with both a gas supplement function and an intermediate gas exhaust function and a heat pump system. The scroll compressor comprises a static scroll plate and a dynamic scroll plate. Intermediate gas exhaust holes and intermediate gas supplement holes are formed in an end plate of the static scroll plate, and the end plate plays a role in sealing. The heat pump system comprises the scroll compressor, an evaporator, a flash device, a condenser, a first stop valve, a second stop valve, a first expansion valve, a second expansion valve and an intermediate gas exhaust pipe. The scroll compressor fulfills the intermediate gas exhaust function and the gas supplement function, the problems that when the environmental temperature changes, the back pressure changes, and over-compression or under-compression is caused are solved, the situation that energy is wasted is relieved, and the working efficiency of the scroll compressor is improved. The high compressor working efficiency can be achieved by the heat pump system at the low environmental temperature and the high environmental temperature, the performance of the heat pump system is improved, and the application temperature range of the heat pump system is broadened.

The invention discloses a Si, Mg and Zr micro-alloyed AlCuMn heat-resistant aluminum alloy and a heat treatment process, and belongs to the technical field of heat-resistant alloy materials. The alloy comprises the following components in percentage by weight: 4%-5.6% of Cu, 0%-0.35% of Mg, 0.2%-0.4% of Mn, 0%-0.3% of Zr, 0%-0.3% of Si and the balance of high-purity aluminum. According to the invention, Si, Mg and Zr micro-alloying and different heat treatment processes are adopted, so that the heat stability of the alloy is improved, and the alloy has higher strength under long-time heat exposure at 225-325 DEG C and keeps good heat stability.

The invention relates to the field of lubricating grease, and particularly provides a lubricating grease composition and a preparation method thereof. The lubricating grease composition contains base oil and acrylic rubber particles, the acrylic rubber particles are dispersed in the base oil and prepared through an irradiation crosslinking method and have a cross-linked structure, the base oil serves as a continuous phase, the acrylic rubber particles serve as a dispersion phase, and relative to 100 parts by weight of base oil, the content of the acrylic rubber particles ranges from 10 parts by weight to 180 parts by weight. The viscosity of the lubricating grease composition can be effectively adjusted along with temperature changes, the application temperature range is wide, and compared with a lubricating grease composition containing acrylic rubber particles obtained through peroxide crosslinking, the kinematic viscosity of the lubricating grease composition is low at the temperature of 40 DEG C, and the kinematic viscosity of the lubricating grease composition is high at the temperature of 100 DEG C. In addition, the lubricating grease composition has excellent antiwear and antifriction performance.