58 results about "Tertiary calcium phosphate" patented technology

The invention discloses a butyronitrile-PVC (polyvinyl chloride) compound elastomer flame-retardant sheath material for wires and cables and a manufacturing method of the butyronitrile-PVC compound elastomer flame-retardant sheath material. The butyronitrile-PVC (polyvinyl chloride) compound elastomer flame-retardant sheath material is composed of, by weight, 100-120 parts of butyronitrile rubber, 40-45 parts of PVC resin, 1-2 parts of sulfur, 0.1-0.2 part of accelerant TMTD, 1-1.5 parts of accelerant CZ, 2-3 parts of antiager, 15-20 parts of antimonous oxide, 5-7 parts of zinc oxides, 1-2 parts of stearic acid, 12-14 parts of DOP (dioctyl-phthalate), 6-8 parts of DOS (dioctyl sebacate), 15-18 parts of TCP (tertiary calcium phosphate), 0.5-0.8 part of zinc stearate, 1-1.5 parts of barium stearate, 0.1-0.2 part of bisphenol A, 2-2.5 parts of butyl ester, 2.5-3 parts of carbon black master batch, 15-20 parts of modified diopside and 25-30 parts of semi-reinforced carbon black. The flame-retardant sheath material has the advantages of good mechanical and physical performance, good high and low temperature resistance, oil resistance, solvent resistance, wear resistance, ozone resistance, ageing resistance, flame retardancy, low smoke and the like and is long-lasting, durable, environment-friendly and pollution-free.

The invention discloses a degradable material for conducting hard tissue regeneration and renovation, and its preparation method which comprises, using degradable biomaterial collagen, chitosan or hydroxyl chitosan, tertiary calcium phosphate or hydroxyapatite as principal raw material, preparing acid solution and suspending liquid, mixing to prepare hard tissue filler, wherein the prepared biological material has good compatibility with the wound tissue.

The invention discloses a compound porous beta-TCP (tertiary calcium phosphate) titanium alloy human astragal support bar and a preparation method thereof. The preparation method includes the steps: firstly, inputting model data into an electronic beam melting device according to design requirements to prepare the needed porous titanium alloy human astragal support bar; and secondly, mixing powdery beta-TCP with hydrogen peroxide and polyvinyl alcohol solution into pasty slurry, pouring the pasty slurry into pores of a titanium alloy support after sufficiently and uniformly stirring the pasty slurry, removing excess water by an evaporation method, and performing rubber discharging and sintering to obtain the compound biological ceramic porous beta-TCP titanium alloy human astragal support bar. The porous titanium alloy human astragal support bar prepared by the preparation method has an elastic modulus similar to that of a human bone tissue, the compressive strength of the support bar is higher than that of a spongy bone and slightly lower than a cortical bone, the support bar can provide effective biomechanical support in an astragal after being implanted into the astragal by the aid of a regular pore structure and internally compounded porous beta-TCP components with fine osteoinductive activity, and the support bar has an excellent osseointegration capacity.

The present invention discloses an absorbable bone interface screw and a preparation method thereof. The bone interface screw contains 5 to 40 percent of nanometer beta-tertiary calcium phosphate and 95 to 60 percent of polylactic acid by weight percentage. Nanometer beta-tertiary calcium phosphate powder is mixed with polylactic acid by solution; flow casting rapid drying method is adopted to evenly distribute the nanometer beta-tertiary calcium phosphate in the polymer matrix, thus molding in an injection machine. The bone interface screw provided by the present invention has the advantages of good biological activity and degradability, as well as very large specific surface area and high intensity.

The invention belongs to the field of biology, and particularly relates to bone scaffold material, with a shape memory function, for jaw repair and a preparation method thereof. The bone scaffold material comprises the following raw materials in part by weight: 5 to 100 parts of polycaprolactone (PLC), 5 to 100 parts of poly butylenes succinate (PBS), 5 to 100 parts of poly (lactic-co-glycolic acid) (PLGA), and 5 to 100 parts of tertiary calcium phosphate (TCP). The bone scaffold material comprises the following raw materials in part by weight: 80 to 100 parts of polycaprolactone (PLC), 10 to 50 parts of poly butylenes succinate (PBS), 10 to 50 parts of poly (lactic-co-glycolic acid) (PLGA), and 30 to 60 parts of tertiary calcium phosphate (TCP). The method also provides a method for preparing the bone scaffold.

The invention discloses a method for preparing alpha-calcium sulfate hemihydrates (alpha-CSH) /beta-tertiary calcium phosphate (beta-TCP) porous granular-type composite artificial bones, which is characterized in that the alpha-CSH is directly synthesized on the surface and/or in the pores of the beta-TCP granules synchronously by the hydrothermal synthesis process and finally the alpha-CSH/beta-TCP porous granular-type artificial bones is prepared. The invention has the advantages that the preparation process is simpler, the preparation period can be effectively reduced, and the preparation efficiency is improved; the proportion between alpha-CSH and beta-TCP phases of the granular-type composite artificial bones can be effectively controlled, thereby controlling the pore structure of the artificial bone granules; meanwhile, the invention guarantees the in-situ solidifying performance and degrading performance of the composite artificial bones, controls the evenness of the product and the porosity and pore diameter of the beta-TCP granules, improves the bone-formation performance and degrading performance of the composite artificial bones and further improves the quality of the product, thereby finally obtaining the composite artificial bones having self-solidifying performance and controllable degradation and having a certain biomechanical strength. The invention has good application and market prospect.

The invention relates to the field of compound fertilizers and particularly relates to a selenium-enriched efficient sustained release compound fertilizer which is prepared from the following raw materials in parts by weight: 10-15 parts of 1250-2000-mesh diatomite, 20-25 parts of urea, 10-12 parts of ammonium dihydrogen phosphate, 2-4 parts of zinc sulfate, 6-8 parts of tertiary calcium phosphate, 10-12 parts of potassium chloride, 18-22 parts of dried pig manure, 15-17 parts of soybean meals, 10-12 parts of soybean straw powder, 10-12 parts of detoxified tung seed cake, 4-6 parts of Japanese banana leaf pulp, 3-5 parts of water hyacinth powder, 10-12 parts of hydroxymethyl cellulose, 4-5 parts of polyacrylamide, 0.1-0.2 part of ammonium bicarbonate, 0.2-0.3 part of camphor, 2-4 parts of selenium-enriched yeast, 1-2 parts of alkyldimethyl benzylammonium chloride, 2-3 parts of nanocarbon, 2-4 parts of zinc gluconate, 6-8 parts of table vinegar and 4-5 parts of additive. The compound fertilizer is prepared from easily available raw materials and is rich in nutrients; the nutrients which are doubly coated by using diatomite and a coating agent cannot be easily lost, thus the fertilizer effect lasts very long time; and the raw materials contain abundant selenium element after being fermented by the selenium-riched yeast, thus the selenium-enriched efficient sustained release compound fertilizer is capable of increasing the content of the selenium in crop fruits, increasing the economic value of vegetables and fruits, and remarkably improving the benefit.

The invention relates to a hemostatic clip made from an absorbable magnesium-based composite material. The absorbable magnesium-based composite material is adopted to prepare a hemostatic clip body which is in a V shape, the top included angle and an included angle formed by adjacent edges of two folding edges are both obtuse angles less than 180 degrees, the cross section of the hemostatic clip is a rectangular shape with 0.9-1.1mm in length and 0.65-0.75 in width, and cross grains with width of 0.2mm and distance of 1.7mm are formed at the inner side of the hemostatic clip. The preparation method of the hemostatic clip comprises the steps of drawing an absorbable magnesium-based composite material rod used as a preparation material, cutting cross grains, forming, performing annealing treatment and washing. The hemostatic clip has the advantages that the hemostatic clip made from the absorbable magnesium-based composite material has excellent biological degradability and physical and mechanical properties, can be shaped easily and has low preparation cost, the toughness of magnesium alloy can be effectively improved and the fracture phenomenon can be greatly reduced due to the addition of HA (Hydroxyapatite) or beta-TCP (Tertiary Calcium Phosphate), and the hemostatic clip has good effect in minimally invasive surgery of abdominal cavity in department of surgery.

The invention relates to a bone repair material which is prepared by the following steps: 1, cutting the cancellous bone parts of mammal chines and thighbones into small blocks and then poaching and drying; 2, soaking the cancellous bones by phosphoric acid; 3, putting the cancellous bones in a pressure cooker to cook, rinsing by deionized water and drying; 4, modifying the cancellous bones; and 5, putting the cancellous bones in a high-temperature furnace to calcine. In the bone repair materials, the proportion of hydroxyapatite (HA) to beta-tertiary calcium phosphate (TCP) is between 1: 4 and 4: 1, so that the defects that the HA is too stable and the beta-TCP is degraded too quickly are overcome, the degrading speed of the material can be adjusted through the proportion of the HA to the beta-TCP to ensure that the degrading speed of the material is matched with the growth speed of the surrounding bone tissues and then the function of remarkably promoting bone healing is provided; and the bone repair material has certain hardness and strength, is easy to plasticize and rich in source, and can be used for solving the manufacturing difficulties of artificial synthetic materials in the aspects of porosity, pore traffic and pore size.

The invention discloses an osteoid structure biological ceramic composite material with adjustable coating thickness, which is prepared from the following raw materials in weight percentage: 1-3% of rare earth, 70-74% of Ca.HPO4.2H2O, and 23-29% of CaCO3. The thickness of a coating prepared by adopting the osteoid structure biological ceramic composite material can achieve 3mm. The invention has the advantages as follows: the rare earth is added into the composite biological material, so that the stability of a HAP phase structure is improved. The coating prepared by adopting the composite material mainly contains hydroxyapatite with stable property, tertiary calcium phosphate, degradable calcium pyrophosphate and calcium titanate, so that the biocompatibility is excellent; the coating and a matrix are combined in a chemical metallurgic manner, so that the combination strength is high and the problem that the biological ceramic coating drops off during clinic application can be solved. Meanwhile, the raw materials are low in price, convenient to buy and easy to store, so that the osteoid structure biological ceramic composite material has favorable market application prospect and commercial value.

The invention relates to a method for carrying out original-soil greening on seawater-dipped saline and alkaline land through salt absorption agents with sugar residue paste. The salt absorption agents with the sugar residue paste are prepared from, by weight, 25-27 parts of biogas residues, 3-5 parts of bentonite, 5-7 parts of haycite, 15-17 parts of sorghum straw powder, 18-20 parts of fermented wild goose dung, 10-12 parts of fermented yellow weasel dung, 5-7 parts of the sugar residue paste, 3-5 parts of sodium hydrogen sulfate, 3-5 parts of ferric pyrophosphate, 1-3 parts of palmitic acid, 1-3 parts of amino acid salt, 0.2-0.4 part of atrazine, 0.2-0.4 part of glyphosine, 0.2-0.4 part of adjusting phosphine, 0.5-0.7 part of Chinese hawthorn leaf extract, 0.5-0.7 part of momordica charantia extract, 2-4 parts of tertiary calcium phosphate, 2 parts of starch-grafting acrylamide polymers, 0.1-0.3 part of methanohalophilus mahii, 0.1-0.3 part of bacillus coagulans, 0.1-0.3 part of brown nitrogen-fixing bacteria, 0.1-0.3 part of aspergillus oryzae and 0.1-0.3 part of trichoderma harziamum.

A long-acting ceramic whitening glaze is prepared from raw materials in parts by weight as follows: 3-10 parts of strontium carbonate, 4-9 parts of cobalt acetate, 6-10 parts of polymethylsiloxane, 2-7 parts of zirconium silicate, 6-11 parts of tetraethoxysilane, 3-10 parts of metakaolin, 3-8 parts of polyvinyl alcohol, 2-6 parts of tertiary calcium phosphate, 3-11 parts of titanium dioxide, 3-9 parts of forsterite, 2-8 parts of quartz powder, 1.2-4 parts of zirconium silicate, 4-7 parts of zinc oxide, 6-8.5 parts of aluminum oxide, 1.2-3 parts of quartz, 1-3 parts of Sc2O3 and 4-7 parts of lithium borohydride. The long-acting ceramic whitening glaze has the benefits as follows: the brightness and the glossiness of the ceramic glaze can be improved very well, meanwhile, long action is realized, and the use cost is low.

The invention provides a powder metallurgy bevel gear which is formed by compressing the following power stocks in part by weight: 100 parts of iron powder, 1.8 to 2.0 part of copper powder, 0.5 to 0.8 part of antimony powder, 0.1 to 0.3 part of cobalt powder, 0.8 to 1.2 part of chromium powder, 0.5 to 0.8 part of graphite powder, 0.1 to 0.3 part of modified wood ash, 0.2 to 0.6 part of rare earth ferrosilicon alloy, 0.1 to 0.3 part of paraffin, 0.1 to 0.2 part of ethylene bis stearamide, 0.1 to 0.3 part of tertiary calcium phosphate, 0.2 to 0.4 part of yttrium podwer, 0.2 to 0.4 part of boron nitride, and 0.4 to 0.5 part of zinc oxide. When in preparation, mixing the powder stocks stepwise firstly, and obtaining the finished product bevel gear through compressing and manufacturing, sintering, heat treatment and surface treatment. The produced powder metallurgy bevel gear has the advantages that the bevel gear is good in abrasion resistance, high in strength and rigidity, good in machinability, is corrosion resistant and less susceptible to breakage, and has a long service life.

The invention provides an active bone repair material and a preparation method thereof. The material comprises a solid-state bone repair material matrix and BMP (bone morphogenetic proteins)-2 active peptide, wherein the solid-state bone repair material matrix is a product obtained after mixing a mixture of alpha calcium sulfate hemihydrate (alpha-CSH) and beta tertiary calcium phosphate (beta-TCP) with a curing liquid; and the weight ratio of alpha-CSH to beta-TCP to the curing liquid is (1-100):(1-100):1. The preparation method is simple in formula and the preparation process is practical; and the material is simple to prepare, has good biocompatibility, has the characteristics of low temperature, low vacuum, low energy consumption and low pollution, and conforms to the requirement of synthesizing the material by way of soft processing.

The invention relates to brushite-calcium silicate/chitosan composite bone cement with rapid and controllable biodegrability. The brushite-calcium silicate/chitosan composite bone cement comprises three parts of composite power I, composite powder II and a curing liquid which are stored separately, wherein the composite power I is formed by mixing MCPM (monocalcium phosphate monohydrate) and MgHPO4*3H2O; the composite powder II is formed by mixing calcium phosphate and calcium silicate with a molar ratio of calcium and silicon larger than 1:1, and calcium phosphate is a mixture of one or two of beta-TPC (tertiary calcium phosphate) and alpha-TCP; the curing liquid adopts a chitosan and citric acid solution; and the mass ratio of the composite power I to the composite power II is (0.3-1.5):1, and the ratio of the total mass of the composite power I and the composite power II to the volume of the curing liquid, namely the solid-to-liquid ratio is (1.5-2.7):1 g/ml. On the basis of that appropriate curing time and certain compressive strength are guaranteed, the brushite-calcium silicate/chitosan composite bone cement has continuous, rapid and controllable biodegrability.

The invention relates to a method for preparing an alveolar bone repair material. The method comprises the following steps: step 1, cutting cancellous bone parts of chine and thigh bone of a mammal into pieces, poaching and drying; step 2, soaking the cancellous bone by using phosphoric acid; step 3, cooking the cancellous bone in a pressure cooker, bleaching by using deionized water, and drying; step 4, modifying the cancellous bone; step 5, calcining the cancellous bone in a high temperature stove; and step 6, crushing and screening the calcined cancellous bone. According to the alveolar bone repair material prepared by utilizing the method, the ratio of hydroxyapatite (HA) to beta-tertiary calcium phosphate (beta-TCP) in the components is between 1:4 and 4:1, the defects that the HA is extremely stable and beta-TCP is extremely quickly degraded are overcome, and the degradation speed of the material can be adjusted by virtue of the ratio between HA and beta-TCP, so that the degradation speed is matched with the growth speed of surrounding bone tissues, and the material has an obvious effect of promoting bone healing. Moreover, the material has a certain hardness and strength and is simple in plasticity and rich in source, and the manufacture problems of artificial synthetic materials in aspects such as porosity, pore traffic and pore size are solved.

The invention discloses a thermally-stable hydroxyapatite whisker and a preparation method thereof. The preparation method of the thermally-stable hydroxyapatite whisker comprises the following steps of: (a) providing alpha-TCP (Tertiary Calcium Phosphate) powder; (b) simultaneously stirring and adding the alpha-TCP powder in deionized water with the constant temperature of 70-90DEG C, adjusting the pH value to be 10.5-12.0 and continuously stirring for 10-30 minutes to obtain a premixing solution; (c) adding inorganic potassium salt in the premixing solution, wherein the mol ratio of potassium in the inorganic potassium salt to calcium in the alpha-TCP is (0.04-0.44):3, and continuously stirring for 12-50 hours to obtain a turbid liquid; and (d) carrying out solid-liquid separation on the turbid liquid to obtain the hydroxyapatite whisker. The hydroxyapatite whisker obtained by using the preparation method of the hermally-stable hydroxyapatite whisker, which is disclosed by the invention, has high thermal stability and can resist high temperature of 1000DEG C. In addition, the preparation method has the advantages of simple process and easiness for operation.

The invention relates to a bone repair material having a tissue oxygenation function and an application of the bone repair material. The bone repair material is prepared from gelatin-modified [alpha]-TCP and PLGA-coated PFOB microparticle sol according to a proportion of 2.5-3.4g/ml. By adding perfluoro-octyl bromothane (PFOB) particles, which serve as an oxygenation agent, to the gelatin-modified[alpha]-tertiary calcium phosphate ([alpha]-TCP), the tissue oxygenation function is achieved, so that the problem on cell oxygen supply before the recovery of blood supply after tissue injury occursis solved, and high safety is guaranteed. The invention also provides the application of the repair material; the prepared artificial bone scaffold and bone cement bone repair material has the oxygenation function, so that the problem that blood supply is in lack in the initial stage of the transplantation of an artificial bone scaffold or bone cement is solved; and necessary oxygen is provided for cell proliferation, so that a tissue healing speed is accelerated; the bone repair material is simple in preparation method and meets the requirements of clinical application; and the bone repair material has a broad application prospect.

The invention provides a preparation method of a three-phase CaP-glass coating/porous A1203 rack biological composite material, which belongs to the technical field of biological medicinal material preparation and comprises the following steps of: coating a composite coating consisting of biological glass using HA (Hydroxylapatite) and phosphate as base bodies on a porous Al2O3 rack to obtain the combination of good biological performance and mechanical performance; mixing HA powder and biological glass powder with different compositions at different proportions to obtain slurry to be coated on the porous Al2O3 rack; carrying out heat treatment for two hours in air at 800 DEG C; and forming the three-phase CaP-glass coating through generating hydroxylapatite (HA), tertiary calcium phosphate (TCP) and calcium hydrophosphate (DCP) principal crystalline phases in the coating phase. The three-phase CaP-glass coating is tightly, uniformly and closely attached on the Al2O3 rack, the highest combining intensity of the three-phase CaP-glass coating can reach 50MPa and is more than two times of that of the pure HA coating, the growth of the osteoblast on the porous Al2O3 rack coated with the three-phase CaP-glass coating is good, and cells can actively pass the coating to be spread into the porous rack.

The invention discloses a calcium phosphate iron bioceramic and a preparation method thereof, and relates to the field of biomaterials. The bioceramic is prepared from the following ingredients in parts by weight: 50-70 parts of tertiary calcium phosphate, 12-20 parts of iron oxide, 4-8 parts of nano tin oxide, 10-18 parts of ferric sulfate, 6-12 parts of calcium hydrophosphate and 2-5 parts of magnesium oxide. The preparation method comprises the following steps: (1) weighing; (2) ball milling; (3) cold press molding; (4) high-temperature calcining; (5) cooling. The bioceramic has the function of promoting bone growth, and can slowly release the elements of calcium, phosphorus and iron in the process of implanting the human body; and besides, the mechanical property is improved, and the bioceramic is an ideal bone substitute and renovating material.

The invention discloses anti-counterfeiting ink for plastic packaging. The anti-counterfeiting ink is prepared from the following raw materials in parts by weight: 80-120 parts of resin, 0.2-0.3 partof fluorescent powder, 8-12 parts of cerium trichloride, 16-24 parts of lanthanum trichloride, 24-36 parts of chitosan and 8-12 parts of pigment. According to the anti-counterfeiting ink, La<3+> is added, and fluorescence intensity of Ce<3+> can be enhanced by the La<3+>. In addition, the excessive chitosan reacts with the lanthanum trichloride and the cerium trichloride. Firstly hydroxyl in the chitosan is coordinated with the cerium trichloride, so that the fluorescence intensity is improved; through synergistic effect of the hydroxyl and the cerium trichloride, the fluorescence intensity isfurther improved; and through organic combination of the transition metal cerium and the fluorescent powder which is tertiary calcium phosphate fluorescent powder, the fluorescent intensity of the fluorescent powder in high-shielding-strength ink such as red ink, yellow ink, green ink, blue ink, white ink, black ink and the like can be enhanced, the fluorescent decay time of the fluorescent anti-counterfeiting ink is prolonged, and the characteristics of long concealing time, good anti-counterfeiting effect and the like of the fluorescent anti-counterfeiting ink are achieved.

The invention discloses a preparation method of a magnesium oxide doped zirconium oxide/tricalcium phosphate composite. The preparation method comprises the following steps of mixing calcium carbonatewith dihydrated calcium hydrogen phosphate, and performing sintering at 985-995 DEG C for 3.5-4.5h so as to obtain beta-TCP; mixing beta-TCP powder with ZrO2 and magnesium oxide, performing uniform mixing with anhydrous ethanol in an agate mortar, then performing drying, adding dried materials in a cylindrical mold of which the diameter is 20mm and the height is 6mm, and performing sample compression, wherein the compressing pressure is 135-145 MPa; placing samples in a vertical resistance furnace, performing warming at the warming rate of 5 DEG C/min to 1370-1390 DEG C, performing sinteringfor 1.5-2.5h, and performing natural cooling along with the furnace. The method is simple, convenient, quick and easy to operate. The prepared magnesium oxide doped zirconium oxide/tricalcium phosphate composite has favorable mechanical properties and can be in large-scale preparation.

The invention is suitable for the technology of implant materials and artificial organs in medical equipment, and provides an artificial cornea porous support material. The artificial cornea porous support material is beta-tertiary calcium phosphate/ graphite/ polyvinyl alcohol composite hydrogel; in the artificial cornea porous support material, the weight ratio of beta-tertiary calcium phosphate to graphite is (4: 1)-(1: 4); the weight ratio of beta-tertiary calcium phosphate to polyvinyl alcohol is (1: 5)-(2: 1); and the weight ratio of graphite to polyvinyl alcohol is (1: 5)-(2: 1). The invention also provides a preparation method of the artificial cornea porous support material.

The invention discloses a cicada/oyster composite crab feed which is characterized by being prepared from the following raw materials in parts by weight: 25-30 parts of wheat bran, 23-28 parts of rice bran, 0.4-0.8 part of sodium sorbate, 1-3 parts of threonine, 2-4 parts of salt, 0.2-0.6 part of neotame, 1-3 parts of tertiary calcium phosphate, 2-4 parts of star anise, 18-25 parts of fish bone, 26-34 parts of cicada, 13-16 parts of oyster, 0.1-0.4 part of mustard oil, 2-5 parts of linseed oil, 15-18 parts of caraway, 19-24 parts of cabbage, 12-15 parts of lilac, 16-23 parts of potato, 19-26 parts of skin of gourd, 0.2-0.4 part of Chinese pulsatilla root, 0.1-0.3 part of coptis chinensis, 0.4-0.6 part of ginseng leaf, 3-6 parts of a phagostimulant and a defined amount of water. According to the feed provided by the invention, as the cicada and the oyster are added, the protein content is high, and the weight gaining speed of the crabs can be increased; the Chinese herbal medicines such as Chinese pulsatilla root, coptis chinensis and ginseng leaves are added, the disease resistance and appetite of the crabs can be improved, the absorption is fast, and the meat of the crabs is stronger than that of wild crabs, and the breeding survival rate of the crabs can be increased by long-term eating of the feed.