71 results about "Strontium phosphate" patented technology

An LED lamp includes a light source configured to emit radiation with a peak intensity at a wavelength between about 250 nm and about 550 nm; and a phosphor composition configured to be radiationally coupled to the light source. The phosphor composition includes particles of a phosphor of formula I, said particles having a coating composition disposed on surfaces thereof;

((Sr_1−zM_z)_1−(x+w)A_wCe_x)₃(Al_1−ySi_y)O_4+y+3(x−w)F_{1−y−3(x−w)}  I

wherein the coating composition comprises a material selected from aluminum oxide, magnesium oxide, calcium oxide, barium oxide, strontium oxide, zinc oxide, aluminum hydroxide, magnesium hydroxide, calcium hydroxide, barium hydroxide, strontium hydroxide, zinc hydroxide, aluminum phosphate, magnesium phosphate, calcium phosphate, barium phosphate, strontium phosphate, and combinations thereof; and

• • A is Li, Na, K, or Rb, or a combination thereof;
  • M is Ca, Ba, Mg, Zn, or a combination thereof; and
  • 0<x≦0.10, 0≦y≦0.5, 0≦z≦0.5, 0≦x≦x.

The invention discloses a high tensile degradable strontium phosphate calcium composite bone cement for repairing or intensifying fixation of human body holding bone defect and preparation method thereof. The solid material of bone cement is mixed powder of Ca4(PO4)2O ceramic with high crystallinity, SrHPO4, CaHPO4, curing liquid is thin phosphoric acid water solution, additive plasticizing unit is biocompatibility degradable macomolecule fiber with high tensile strength, selecting from lactic acid - hydroxyacetic acid copolymer fibre, polylatic acid fiber or polyglycolic acid fiber or other absorbable surgical suture, the enhancing unit is Ca4(PO4)2O residual ceramic particles after curing reaction. The preparation method coalesces kinds of techniques of ceramic particles in-situ reinforcing, initial plasticizing and later stage degradation of degradable fiber, Sr modification to get a novel high tensile degradable strontium phosphate calcium composite bone cement in like physiologic environment. The material has good biocompatibility, bioactivity, bone conductivity and degradation property.

The invention provides a preparation method of a bionic mineralized collagen scaffold. The preparation method comprises the following steps: 1), preparing a bionic mineralized liquid: adjusting the pHvalue of carboxymethyl chitosan-amorphous calcium phosphate (or amorphous strontium phosphate or amorphous strontium carbonate) nanocomposite liquid to be lower than an isoelectric point of CMC; 2),preparing the bionic mineralized collagen scaffold: mixing the bionic mineralized liquid and acid-dissolved type-I collagen, then putting into a dialysis bag, sealing, then putting into a PBS buffer liquid, self-assembling and mineralizing for 2-5 days, then adding an alkaline CMC/ACP (ASP or ASC) liquid into the dialysis bag, and changing the PBS buffer liquid; 1-3 days later, putting the dialysis bag into deionized water for dialyzing for 10-72h, changing the deionized water for several times, centrifuging the liquid in the bag to obtain collagen gel, and performing freeze drying to obtain the bionic mineralized collagen scaffold. By the preparation method, collagen self-assembly and mineralization are cooperatively performed, intra-collagen fiber mineralization is achieved at relativelyhigh efficiency, and osteogenic ability-promoting strontium is integrated into the collagen scaffold, so that the preparation method has a wide clinical application prospect.

The present invention is intended to provide a catalyst which is for synthesizing butanol from ethanol at a high selectivity and which comprises strontium phosphate apatite having the Sr/P atomic ratio of 1.5-2.0, and the synthesis method.

The invention relates to a preparation method of a strontium-containing phosphate bioactivity conversion coating on a titanium surface. According to the method, the strontium-containing phosphate bioactivity conversion coating with micron and nanoscale crystal structures grows on titanium and titanium alloy surfaces in situ directly by means of a phosphate chemical conversion technology. The method comprises the following steps: preparing a chemical conversion basic liquid containing phosphate ions, strontium ions and an accelerant; successively performing pickling, washing and surface activating on the surface of a titanium matrix; and immersing the treated titanium matrix in the chemical conversion basic liquid for chemical conversion treatment, wherein the conversion temperature is 55-75 DEG C and the conversion time is 20-50min. The strontium-containing phosphate bioactivity conversion coating on the titanium surface prepared by the method is in a porous multilayered micron and nanoscale crystal structure shape. The coating is primarily composed of strontium monophosphate strontium phosphate phases. The coating can effectively accelerate deposition of a hydroxyapatite phase in immersion in an in vitro simulation fluid.

The invention discloses development bone cement and its preparation method and use. The development bone cement comprises powder and a liquid. The powder comprises polymethyl methacrylate (PMMA), a developer and benzoyl peroxide. The liquid comprises a methyl methacrylate (MMA) monomer as a main component. The developer is a strontium salt. The strontium salt is one of strontium phosphate, strontium sulfate and strontium carbonate. A mass ratio of the developer to the bone cement powder is in a range of 10%-30%. The development bone cement can be used for fixing of fracture caused by osteoporosis and bone defect filling.

Photothermographic materials contain an X-radiation-sensitive phosphor that emits in the range of from about 100 to about 410 nm. The X-radiation-sensitive phosphor is a rare earth phosphate, a yttrium phosphate, a strontium phosphate or a strontium fluoroborate. These photothermographic materials can be provides out of organic solvent or aqueous solvent coating formulations.

An environment protection type thermal insulating glass contains SiO2, barium phosphate, strontium phosphate, calcium phosphate, magnesium phosphate, beryllium phosphate, lead phosphate and iron phosphate. Its advantages are low water-soluble loss, high resistance to acetic acid, high stability and good effect to adsorb infrared ray and isolate harmful ray and heat.

The invention relates to an yttrium strontium phosphate crystal as well as a preparation method and an application thereof. The chemical formula of the yttrium strontium phosphate crystal is Sr3Y(PO4)3, and the crystal is of an asymmetric structure and belongs to a cubic crystal system-43 m point group. The preparation method of the yttrium strontium phosphate crystal comprises the following steps: strontium yttrium phosphate polycrystalline materials are synthesized, and a homogeneously melted solution of yttrium strontium phosphate is obtained after heating and melting; an iridium bar or anyttrium strontium phosphate crystal is used as a seed crystal, so that the bottom end of the seed crystal is in close contact with the homogeneously melted solution of yttrium strontium phosphate; anda czochralski method is used for single crystal growth, and the temperature of the single crystal growth is 1700-1850 DEG C. The melting point of the yttrium strontium phosphate crystal is higher than 1800 DEG C, no phase transition from room temperature to the melting point exists, the chemical properties are stable, and no deliquescence exists, so that the yttrium strontium phosphate has significant application advantages in the high temperature piezoelectric and wide temperature nonlinear optical fields.

The invention discloses a functionalized nano biological ceramic coating and a preparation process thereof. The functionalized nano biological ceramic coating is prepared from the following components: tricalcium phosphate, chromium sulfate, strontium fluorapatite, aluminum chloride, sodium metatitantate, ammonium molybdate, silica gel, chitosan fibers, carbon molecular sieve-220, carboxymethyl chitin, polyhydroxybutyric acid, acetylglutamic acid, tartaric acid, cellulose acetate, 3-acrylamide dopamine, methyl salicylate, eucalyptol, urea, span-80 and distilled water. The biological ceramic coating provided by the invention is significantly high in bonding intensity with an implant, and the maximum bearing load of the biological ceramic coating reaches 105-127N or above, so that a demand on the mechanical performance of the coating of the implant is satisfied; and in addition, the coating is excellent in biocompatibility, and the coating is capable of promoting the adhesion and growth of osteoblast, accelerating repair and healing rates and shortening a healing cycle.

The invention discloses an anticorrosion coating for a buried pipeline. The anticorrosion coating is prepared from the following components in percentage by weight: 25-40 percent of epoxy resin, 35-45 percent of modified liquid asphalt, 5-10 percent of a flame retardant, 10 percent of talc, 1-5 percent of an auxiliary, 5-15 percent of a curing agent, 1-3 percent of zinc phosphate, 2-4 percent of strontium phosphate, 3-5 percent of sodium hexametaphosphate and 5-8 percent of sodium pyrophosphate. The invention also discloses a preparation method of the anticorrosion coating for the buried pipeline. The anticorrosion coating can be constructed by adopting a spraying process, a brushing coating process and a roll coating process and has the advantages of excellent gumminess, chemical corrosion, abrasion and permeability resistance, fast dry and flame retardancy. With the application of the anticorrosion coating, the original functions can be greatly strengthened, unnecessary anticorrosion materials are prevented from being applied again, the comprehensive cost of the anticorrosion engineering is lowered, and the use is convenient.

The invention relates to a blue fluorescence luminescent material and a preparation method thereof, pertaining to the technical field of luminescent material. The technic proposal adopted by the invention is to prepare strontium phosphate barium stone, of which a chemical formula is M(Srx, Ba1-x)PO4:Eu, wherein, M is equal to Li+, Na+, K+, Rb+, x is equal to 0-1, doping content of rare earth element europium (Eu2+) is 0.0005-10 percent mol of the total amount of strontium and barium. An excitation field of the invention tallies closely with vacuum uv (VUV) generated by ionomer such as mixed gas of xenon and ne (Xe plus Ne) which is applied presently. Excited by vacuum uv less than 200nm, the invention emits blue fluorescence; the invention has high crystallinity, good luminescent quality, low cost, simple preparation technique and no pollution and is especially applicable to ionomer plate displaying technology and luminescent and displaying devices with vacuum uv as an excitation source, such as a noble gas discharge lamp, etc.

The invention belongs to the technical field of material chemistry and particularly relates to a preparation method of strontium phosphate-based nano-assembling spherical anticorrosive pigment. The strontium phosphate-based nano-assembling spherical anticorrosive pigment is of an ordered structure assembled by nanobelts, and the surface of the pigment can be firmly composited with benzotriazole and a surfactant. The strontium phosphate-based nano-assembling spherical anticorrosive pigment 2-3 micrometers in overall diameter and prepared from the nanobelts 20-30 nm thick has the advantages of good dispersity, excellent compatibility and excellent corrosion resistant performance.

The invention relates to the field of semiconductor photoelectric materials, and provides a multielement-doped strontium phosphate luminescent film which has a general formula of Sr[2-x-y-z]P2O7 : xSn<4+>, yTi<4+>, zEu<3+>, wherein x value is 0.01-0.1; y value is 0.005-0.05; and z value is 0.01-0.04. The invention also provides a preparation method for the multielement-doped strontium phosphate luminescent film and applications of the multielement-doped strontium phosphate luminescent film obtained by the method in field emission devices, cathode-ray tubes or electroluminescent devices.

Calcium nitrate, diammonium phosphate and urea are mixed and added with strontium phosphate to be mixed, stirred and heated, to prepare strontium containing hydroxyapatite; the hydroxyapatite is added into magnesium chloride and magnesium oxide, added with water to be dissolved, to prepare magnesium oxychloride adhesive; a hand lay-up bone pre-fabricated piece is paved with pulp and glass fiber cloth, flattened, paved uniformly and brushed with glue; and then the prefabricated outer skin is paved and compacted, the seam is sealed by plastic thin film, cured and stripped; the product is trimmed within one day after stripping, and a medical composite glass fiber strontium containing enhanced bone cement product is prepared. The composite material prepared by the invention has the advantages of uniform glass fiber dispersion and good combination of the strontium containing hydroxyapatite and a matrix interface, and biomedical composite material with very good application prospect.

The invention relates to neodymium doped strontium fluorophosphate nano-microspheres and a preparation method thereof. The average particle size of the neodymium doped strontium fluorophosphate nano-microspheres is 30-50 nanometers, and the neodymium doped strontium fluorophosphate nano-microspheres are even in particle size distribution. The preparation method includes the steps of firstly, dissolving Sr(NO3)2 and Nd(NO3)3 6H2O into deionized water to obtain a cation solution; secondly, dissolving NH4F and (NH4)2HPO4 into deionized water to obtain an anion solution; thirdly, adding the anionsolution into the cation solution, evenly stirring, standing, performing ultrasonic cleaning and centrifugal separation to obtain precipitates, drying the precipitates, and grinding to obtain the neodymium doped strontium fluorophosphate nano-microspheres. The preparation method has the advantages that the products are prepared through a precipitation method, nucleus growth rate is controlled by optimized process conditions such as reactant concentration and mixing rate, and the neodymium doped strontium fluorophosphate nano-microspheres which are good in dispersity and have near-spherical morphology.

The invention provides a hydroxyl strontium phosphate super-long nanowire and a preparation method thereof, and the preparation method comprises the following steps: step (1), uniformly stirring and mixing strontium salt as a strontium source, phosphate as a phosphorus source and oleate as a reactant and an emulsifier in a solvent to form a precursor suspension; (2) carrying out hydrothermal treatment on the precursor suspension liquid obtained in the step (1) in a closed container; and (3) separating and washing the product obtained in the step (2) to obtain the hydroxyl strontium phosphate super-long nanowire. The invention also provides application of the hydroxyl strontium phosphate super-long nanowire in the fields of bone defect repair, dental materials, drug carriers, energy and environmental protection. The invention also provides a macro-scale ordered structure material comprising the hydroxyl strontium phosphate super-long nanowire. The hydroxyl strontium phosphate super-long nanowire and the preparation method thereof have the advantages of simple process, low cost and the like, and are expected to be produced on a large scale.

The invention provides aqueous anti-rust metal primers, and in particular relates to microspheric ion exchange flash-rust-resistant anti-rust metal primer and a preparation method thereof. The primeris prepared from polyacrylic emulsion, polymer emulsion of a hollow structure, a coalescing agent, a thickening agent, a pH regulator, a flash-rust-resistant agent, a body filler, microspheric calcium-ion-containing silica gel, strontium phosphate, bentonite and water. The environmentally friendly anti-rust metal primer provided by the invention has excellent salt fog resistance and flash rust resistance; the film density is excellent, and the dry film of 0.5 mm can bear a water pressure of 0.3MPa for 30 minutes; the adhesive force is extremely high, and the national standard of automotive anti-rust primers can be reached; the content of prohibited substances is far lower than the content required in relevant laws and regulations.

The invention discloses a titanium surface micro-nano zinc phosphate strontium chemical conversion film and controllable preparation method thereof. The method comprises the following steps of the chemical conversion solution is prepared, wherein the chemical conversion solution contains strontium ions, zinc ions, dihydrogen phosphate ions and an accelerant; carrying out iron powder curing treatment on the chemical conversion solution to obtain a curing solution; and coupling the cleaned and surface-activated titanium matrix with a pure iron clamp, and then soaking the titanium matrix and thepure iron clamp in a curing solution for chemical conversion treatment to obtain the chemical conversion film. The controllable preparation method of different micro-nano structures of the zinc-strontium-phosphate film layer is realized through the addition amount of the zinc-containing compound in the conversion solution and the regulation of the accelerator, the introduction of the biological functional element and the micro-nano structure regulation and control are combined, so that the early bone integration capability and the antibacterial property of the titanium-based implant are further improved, and the clinical application effect of the titanium-based implant is improved.