9 results about "Magnesium calcium" patented technology

The present application relates to a kind of self-setting composite bone implants based on gallic acid complex salt and preparation method thereof, belong to bone repair material field.The present application is specifically related to a kind of self-setting composite bone implants, it is characterized in that, component A, component B and component C, the component A is gallic acid and the complex salt of at least two metal elements, wherein the at least two metal elements are the metal element of promoting bone tissue regeneration or the trace metal element required by human body, and the at least two metal elements include calcium, the component B is the complex of calcium / strontium chondroitin sulfate and calcium sulfate, and the component C is magnesium calcium hydrogen phosphate complex.The self-setting composite bone implant of the present application has the characteristics of antibacterial, anti-inflammatory, promoting osteogenesis, instant shaping and all degradation, can meet the clinical needs of bone tumor, bone injury and the like, has wide application prospect in various bone repair, reconstruction and replacement.

The application belongs to the technical field of magnesium calcium brick processing, and particularly relates to an environment-friendly magnesium calcium brick processing device. The following scheme is provided: a kettle is arranged with a kettle cover, a stirring shaft is arranged in the middle of the kettle and is in transmission connection with a driving motor, the stirring shaft is vertically arranged at the center of the kettle, stirring blades are fixed to the outer wall of the stirring shaft, a slip ring is horizontally arranged at the top of the kettle, a plurality of slide rods are slidably connected to the outer wall of the slip ring, a scraper is fixed to the bottom end of the slide rod and is in abutment with the inner wall of the kettle, springs are arranged between the slide rods and the slip ring, and the rotation direction of the stirring shaft is set as the direction from the spring to the slide rod. Through the dynamic relative movement between the scraper and the stirring shaft, the use of liquid flow change and the collision between the slide rods and the inner walls of the two sides of the chute one in the reciprocating movement of the slide rods, the cleaning and anti-bonding effect of the surfaces of the slide rods and the scraper is improved, thereby effectively improving the mixing operation effect of the magnesium calcium brick preparation and the quality of the finished product.

The present application relates to a kind of large size zirconia ceramic and its preparation method, the zirconia ceramic includes by percentage by weight, including 91-95% of monoclinic zirconia, 0-1% of lanthanum trioxide, 3-8% of magnesium calcium sand, preparation process uses wet ball milling process, powder after ball milling dry is pressed into shape under 120-180MPa, after being fired at 1600-1700 ℃, large size zirconia ceramic is obtained.The present application utilizes MgO and CaO in natural magnesium calcium sand to stabilize zirconia, the micro-impurities in magnesium calcium sand are in liquid phase at high temperature, can promote sintering, reduce firing temperature;And a small amount of liquid phase relieves thermal stress at high temperature, prevent large size zirconia ceramic cracking, improve yield.In addition, magnesium calcium sand hydration generates a small amount of Mg (OH) 2 And Ca (OH) 2 Play the role of binding, need not to add binder separately.The zirconia ceramic prepared by the method has the advantages of low energy consumption, low cost and volume stability.

The application discloses a high-viscosity anti-permeation special caulking paste for bolt holes and a preparation method thereof, and belongs to the technical field of building materials. The caulking paste is prepared by mixing and stirring Portland cement, heavy calcium carbonate, layered-branching composite calcium hydroxysilicate-magnesium calcium aluminate, porous cage-shaped hydrophobically modified calcium zinc aluminosilicate, latex powder, hydroxypropyl methyl cellulose ether, polypropylene fiber, calcium formate, organic silicon water-repellent agent, starch ether and water. The layered-branching composite calcium hydroxysilicate-magnesium calcium aluminate is prepared by parallel flow co-precipitation of a calcium source, an aluminum source, a magnesium source and a silicon source in the presence of a template agent and a buffer solution, and then hydrothermal calcination, so as to form a layer plate-whisker interlocking structure. The porous cage-shaped hydrophobically modified calcium zinc aluminosilicate is prepared by a sol-gel method through step-by-step temperature control complexation, template assembly, calcination and fluorosilane hydrophobic modification, so as to form a porous cage-shaped structure. The application is suitable for plugging of concrete structure bolt holes.

This invention discloses a trivalent chromium-doped magnesium calcium aluminate deep red phosphor and its preparation method. The phosphor is trivalent chromium ion-doped magnesium calcium aluminate with the chemical formula CaMg2Al. 16‑x O 27 :xCr 3+ The elemental molar ratio is Ca:Mg:Al:O:Cr = 1:2:(16-x):27:x, where 0.01≤x≤0.10. This invention also discloses a method for preparing this phosphor. The deep red luminescent phosphor of this invention exhibits absorption in the 300-650 nm region and its emission spectrum is located in the 600-880 nm region. Its emission color is in the deep red to near-infrared range, which matches the deep red absorption spectrum of plant photosynthesis. This phosphor has potential application prospects in plant LED lighting.

The application discloses a magnesium-calcium anti-joint agent, a preparation method thereof and waterproof cement mortar. The anti-joint agent comprises a mixture of magnesium oxide and calcium oxide to which graphene oxide is attached. The preparation method comprises the following steps: (1) mixing magnesium oxide and calcium oxide to obtain a magnesium-calcium powder, and then fluidizing the powder; (2) applying a dispersion liquid formed by atomized graphene oxide and a volatile non-aqueous dispersion medium to the fluidized powder. After completion, the obtained mixture is mechanically ground to obtain the magnesium-calcium anti-joint agent. The waterproof cement mortar comprises the following raw materials: 100 parts by weight of cementing material, 2-10 parts by weight of the magnesium-calcium anti-joint agent, 120-350 parts by weight of fine aggregate and 30-60 parts by weight of mixing water. The anti-joint agent effectively realizes real-time compensation of internal volume change of the cement mortar, prevents development of microcracks and realizes efficient waterproofing of the cement mortar.

Provided herein are methods of making compositions comprising mixtures of lactones. Also provided herein are mixtures of lactones produced by the methods provided herein. An example lactone composition can include a 5-hydroxy-2-decenoic acid-δ-lactone, a 3,5-dihydroxydecanoic acid-δ-lactone, and sulfur, nitrogen, phosphorus, potassium, magnesium, calcium, sodium, iron, aluminum, silicon, organic chloride, 3,5-dihydroxydecanoic acid, a carbohydrate, free fatty acids, or a combination thereof.

The present application belongs to the technical field of magnesium calcium brick production, especially to a kind of magnesium calcium brick environment-friendly processing mould and its ejection mechanism, aiming at the existing mould generally adopts artificial mould clamping, there can be the problem of deviation of upper mould plate and mould box, and after magnesium calcium brick blank is made, it is inconvenient to move magnesium calcium brick out of mould box, the following scheme is proposed, its processing mould includes base, the top of base is fixedly installed with column symmetrically, and the number of column is two, in the present application, electric push rod can drive upper mould plate to move downward, so that magnesium calcium brick blank can be pressed and formed, since electrical power control is adopted, upper mould plate and mould box can be accurately clamped, deviation does not occur, and when electric push rod drives upper mould plate to move upward after pressing is completed, magnesium calcium brick product can be automatically ejected from mould box, so that demoulding can be conveniently carried out.

The utility model belongs to the technical field of magnesium-calcium brick processing, and particularly relates to a mixing machine stirring device for producing magnesium-calcium bricks, which comprises a vertical cylinder, a feed pipe and a motor are arranged at the top of the vertical cylinder, a discharge pipe is arranged at the bottom of the vertical cylinder, a motor drives a central shaft and a stirring paddle, and a discharge sleeve is detachably sleeved on the discharge pipe. A lifting gate plate and a mechanism for driving the gate plate are arranged in the sleeve, the driving mechanism comprises a mounting seat fixed in the sleeve, a guide column and a rotatable stud are arranged on the mounting seat, and the gate plate is in threaded fit with the stud and is in sliding connection with the guide column; the double-screw bolt is driven to rotate through the rocking handle, the shaft column and the bevel gear pair, so that the flashboard is controlled to ascend and descend, and during stirring, the flashboard ascends and extends into a discharging pipe opening to seal the discharging pipe opening, and materials are prevented from entering to form a dead zone; and during discharging, the flashboard descends to open the channel. The discharging pipe thoroughly solves the problem of uneven mixing caused by material residues in the discharging pipe, and is simple and reliable in structure and convenient to disassemble, assemble and maintain.