43 results about "Bio ceramic" patented technology

The invention discloses a multi-ceramic-material 3D printing nozzle, device and method. The 3D printing nozzle designed by the invention can be adaptive to simultaneous extrusion and intermittent extrusion of one or more different biological ceramic slurries; the printing device comprises a 3D printing platform with an FDM printer as a main body, a discharging module combined with a printing nozzle and a pneumatic system, and a curing module composed of follow-up ultraviolet laser. Through a pulse strategy and relative pressure control and in combination with a laser-assisted curing technology, a runner invasion behavior (backflow) is overcome, construction of a biological ceramic scaffold with spatial heterogeneous material distribution is realized, and a new idea is provided for preparation of a multi-ceramic material bone repair scaffold.

The invention relates to the technical field of ceramic aerogel, in particular to hydroxyapatite biological ceramic aerogel with a directional hole structure as well as a preparation method and application of the hydroxyapatite biological ceramic aerogel. The preparation method comprises the following steps: firstly, adding hydroxyapatite particles, a sintering aid and a binder into a water solvent according to a certain mass ratio to prepare aerogel ink; and secondly, filling the ink into an extrusion needle tube of a direct-writing 3D printing technology, and carrying out customized printing on hydroxyapatite aerogel on a liquid nitrogen cooled copper plate by adopting an ice template method as an assistance. After freeze drying and sintering, the biological ceramic aerogel with the directional hole structure on the micro scale is finally obtained. The oriented pore biological ceramic aerogel has excellent mechanical properties and biocompatibility, and has good prospects in the fields of biological scaffolds, bone tissue engineering, biosensor substrates and the like. The method for preparing the hydroxyapatite biological ceramic aerogel by using the ice template method to assist the 3D printing technology is low in cost, simple to operate and wide in application range, and has great application potential.

The invention discloses a mesoporous biological ceramic filter sponge as well as a preparation method and application thereof, and belongs to the technical field of water treatment and air purification. The filtering sponge adopts a three-layer composite structure and comprises a three-dimensional porous sponge framework, a mesoporous ceramic transition layer and a nano metal thorn functional layer. Microorganism inactivation is achieved through a unique'adsorption-locking-puncturing 'physical mechanism, the inactivation rate of bacteria and viruses exceeds 99.9% under the condition that no chemical agent is used, meanwhile, heavy metal pollutants can be selectively removed, and beneficial mineral substances are reserved. The filtering sponge has the advantages of high porosity, large specific surface area, long service life and the like, and can be widely applied to the fields of drinking water treatment, sewage treatment, air purification and the like.

The biological tank structure of the sewage treatment plant comprises a treatment tank body, a biological filter material plate and a double-water-inlet water pump, a tank cavity partition plate is installed in the middle of an inner cavity of the treatment tank body and divides the inner cavity of the treatment tank body into a left half cavity and a right half cavity, and an auxiliary biological filter material layer is arranged at the bottom end of the biological filter material plate. A biological ceramic filter material plate is arranged at the bottom end of the auxiliary biological filter material layer, a water quality detector is mounted at the bottom of the other side of the treatment tank body, and one end of the water quality detector extends into the right half cavity and is provided with a monitoring probe. According to the utility model, the inner cavity of the treatment tank body is divided into the left half cavity and the right half cavity by the tank cavity division plate, and the monitoring probe and the water quality detector are communicated with the right half cavity, so that sewage subjected to biological filtration enters the right half cavity and is monitored; when the biological filtration does not reach the standard, the sewage is conveyed to the left half cavity through a backflow conveying pipeline and an external backflow pipe by virtue of a double-water-inlet water pump, and the biological filtration operation is performed again.

The invention relates to the technical field of biological ceramic materials, in particular to a zirconium oxide bone repair scaffold material with a porous interconnection structure and a preparation method of the zirconium oxide bone repair scaffold material. The invention aims to solve the problems of poor mechanical property and fragile interconnection structure of the existing stent under high porosity. The core preparation process comprises the following steps of: performing acetone steam annealing and pre-fusion on a double-particle-size microsphere template to form a stable interconnection window prototype; then, a continuous hole wall main body is constructed through vacuum impregnation of high-viscosity zirconium oxide slurry, and then secondary positioning reinforcement is conducted on the interconnected neck parts through low-viscosity nano zirconium oxide sol; finally, diluted bioactive glass sol is introduced to endow the surface with biological activity, and a final product is obtained through temperature-controlled degreasing and sintering. According to the method, the pore connectivity, the mechanical strength and the biological activity of the scaffold are synergistically optimized through template pre-fusion and partition sequential processes, and the method is suitable for repairing load-bearing bone defects.

The invention relates to the technical field of bionic teeth, in particular to a method for 3D printing of a gradient bionic tooth structure based on a composite ceramic repair material, and the method comprises the following steps: S1, adopting lithium aluminum silicate series biological ceramic as a base material, and carrying out plasma ball milling treatment to obtain uniform powder; preparing slurry from the powder and polyethylene glycol diacrylate resin containing 3wt% of a photoinitiator according to a powder-water ratio of 42%-46%; s2, performing three-stage treatment on the slurry by using a vacuum defoaming unit; s3, constructing a gradient stress distribution model based on CT scanning data, and dividing an enamel layer, a dentin layer and a dental pulp cavity transition layer; s4, performing lamination forming on the slurry at the speed of 50 + / -5mm / s through a piezoelectric microdroplet injection system; and S5, carrying out sintering molding on the printed bionic tooth body structure by adopting a gradient sintering process. The problems that an interface between a restoration body and surrounding tissues is unstable and inflammatory reaction and rejection reaction easily occur due to the fact that a traditional restoration material is often difficult to accurately simulate the gradient structure of teeth are solved.

The invention discloses an antibacterial gel composite material as well as a preparation method and application thereof. The antibacterial gel composite material comprises photo-crosslinking hydrogel, and the photo-crosslinking hydrogel is coated with a drug-loaded mesoporous material; the drug-loaded mesoporous material comprises polydopamine, mesoporous biological ceramic and a growth factor which are arranged in sequence; the surface of the mesoporous biological ceramic is coated with polydopamine; growth factors are encapsulated in the mesoporous biological ceramic; the mesoporous biological ceramic is doped with metal ions with an antibacterial effect. According to the antibacterial gel composite material provided by the invention, in the composite material, mesoporous biological ceramic is coated with polydopamine, so that ionic products and doped antibacterial ions in drugs and biological ceramic can be slowly released, the burst release is relatively small, and stable release is realized; in addition, by regulating and controlling the doping amount of the antibacterial ions in the porous biological ceramic and the mass of the medicine loaded in the doped mesoporous biological ceramic, the release curve of the medicine and the ions can be effectively regulated and controlled.

The invention discloses biological piezoelectric ceramic as well as a preparation method and application thereof, and belongs to the field of implantable and biodegradable sensor materials. A biological ceramic material hydroxyapatite (HA) and a lead-free piezoelectric ceramic material sodium bismuth titanate (BNT) are compounded, the obtained HA / BNT biological piezoelectric ceramic shows remarkable biodegradability and certain piezoelectric property, and a certain amount of potassium and lithium ions are further doped in BNT, so that the biodegradability of the HA / BNT biological piezoelectric ceramic is improved, and the biodegradability of the HA / BNT biological piezoelectric ceramic is improved. The obtained HA / BNKLT biological piezoelectric ceramic also shows remarkable biodegradability and certain piezoelectric property, and the two kinds of biological piezoelectric ceramics can meet the self-power supply requirement of an implantable biodegradable sensor. In addition, the biological piezoelectric ceramic provided by the invention can avoid the potential toxicity problem caused by barium ions and niobium ions in the prior art.

The invention belongs to the technical field of biological materials, and particularly relates to a porous biological ceramic coating and a preparation method thereof. Titanium powder serves as a main component for forming a metallurgical transition layer, composite ceramic powder serves as a main component for forming a bioactive ceramic layer, the titanium powder and the composite ceramic powder are mixed according to the mode that the content of the titanium powder is decreased in a gradient mode and the content of the composite ceramic powder is increased in a gradient mode, lanthanum oxide powder and a water-soluble pore forming agent are added, and the composite ceramic layer is formed. N pieces of unit precursor powder with gradient change are obtained; sequentially cladding the N precursor powder on the surface of the titanium alloy base material by adopting a laser cladding process according to a mode of gradient reduction of the titanium powder content and gradient increase of the composite ceramic powder content, so as to obtain a biological ceramic coating with a gradient structure; dissolving and removing the pore-forming agent in the biological ceramic coating through water bath heating to obtain a porous biological ceramic coating; the prepared porous biological ceramic coating has good mechanical properties, the preparation method is simple, and the pore diameter is easy to control.

The invention provides a porous biological ceramic hard tissue slice as well as a preparation method and application thereof. The preparation method of the porous biological ceramic hard tissue slice comprises the following steps: preparing a hydroxyl phospholime bone restoration specimen; dehydrating and transparentizing the hydroxyapatite bone restoration specimen; carrying out permeation and embedding on the hydroxyl phospholime bone restoration specimen; carrying out block trimming and slicing on the hydroxyl phospholime bone restoration specimen; mounting the hydroxyl phospholime bone restoration specimen; through the five steps, the porous biological ceramic hard tissue slice is obtained. According to the method, the defect that a tissue-material structure is easy to damage when a biological ceramic material is treated by a traditional hard tissue slicing technology is overcome; the improved hard tissue slicing technology is suitable for research of biological ceramic materials in bone tissue engineering application.

The invention relates to a bone-like layered calcium silicate / tricalcium phosphate heterogeneous biological ceramic as well as a preparation method and application thereof. The preparation method of the bone-imitating layered calcium silicate / tricalcium phosphate heterogeneous biological ceramic comprises the following steps: (1) mixing calcium silicate powder, an additive and a solvent to obtain calcium silicate tape casting slurry; mixing the tricalcium phosphate powder, an additive and a solvent to obtain tricalcium phosphate tape casting slurry; (2) respectively carrying out tape casting on the calcium silicate tape casting slurry and the tricalcium phosphate tape casting slurry to obtain a calcium silicate green tape and a tricalcium phosphate green tape; (3) alternately laminating the calcium silicate green tape and the tricalcium phosphate green tape, and performing pressurization treatment to obtain a composite ceramic body; and (4) degumming and sintering the composite ceramic green body to obtain the bone-like layered calcium silicate / tricalcium phosphate heterogeneous biological ceramic.

The invention provides photosensitive ceramic slurry and a photocuring 3D printing biological ceramic material as well as a preparation method and application thereof, and belongs to the technical field of medical biological materials. The photosensitive ceramic slurry provided by the invention is prepared from the following components in parts by mass: 50 to 55 parts of aluminum dihydrogen phosphate sol, 20 to 25 parts of ceramic powder, 10 to 15 parts of monomer, 0.05 to 0.10 part of photoinitiator, 0.01 to 0.05 part of stabilizer, 0.01 to 0.05 part of dye and 5 to 10 parts of water. A precursor obtained after 3D printing of the photosensitive ceramic slurry provided by the invention has the characteristics of free compression recovery, cutting and individualized filling of bone defect parts, flaws appearing in the printing process can be trimmed, and the precursor structure obtained after printing can be automatically recovered when slightly deformed; the problems that after 3D printing, the photosensitive resin is fixed in structure and cannot be freely compressed and cut are solved.

The invention relates to the field of biomedical materials, and discloses a preparation method of a collagen composite biological ceramic material. The method comprises the following steps: cleaning and drying a calcium phosphate ceramic matrix; immersing the ceramic matrix into the oligopeptide solution for adsorption, and irradiating under the condition of 220-300nm ultraviolet rays; sequentially immersing the ceramic matrix into a collagen solution with multi-stage gradient concentration; further immersing the ceramic substrate into a high-concentration collagen solution containing temperature-sensitive microgel particles; placing the soaked material in a mold with temperature gradient for directional freezing, and then performing freeze-drying treatment to obtain a finished product. Through the synergistic effect of short peptide pre-adsorption and UV low-energy irradiation, an interface enhancement layer with a mortise and tenon joint structure is constructed between the collagen coating and the ceramic matrix.

The invention provides a multifunctional artificial eye seat with polar radiation aperture distribution and a preparation method thereof, and belongs to the technical field of biomedical materials. The artificial eye seat is a porous spherical or ellipsoidal stent taking trace copper doped zinc melilite biological ceramic as a main component. The internal micropores are mutually communicated curved surface pore units, the pore diameters of the micropores are radially expanded from one end of the spherical surface to the opposite side in a macropore-mesopore-micropore gradient layout, a polar radiation pore diameter distribution three-dimensional bracket model is printed by adopting photocuring ceramic, and then the polar radiation pore diameter distribution three-dimensional bracket model is cleaned, dried and sintered to form the polar radiation pore diameter distribution three-dimensional bracket; the artificial eye seat gives consideration to the anatomical physiological structure of the orbit, the surface of the macropore area is attached to the deep soft tissue of the orbit, and the micropore area faces the ocular surface, so that vascularized soft tissue ingrowth is efficiently promoted, infection is durably resisted, common risks such as displacement and exposure of the artificial eye seat are effectively overcome, and the artificial eye seat has good application value in orbit reconstruction and reshaping.

The utility model provides a hydroxyapatite-based sintering device for biological ceramic processing, which relates to the technical field of medical cosmetology, and comprises an operation table, a sintering box is arranged at the top of the operation table, a placing groove is formed in the top of the operation table and is communicated with the interior of the sintering box, and electric heating plates are arranged on two sides in the sintering box. A first opening and a second opening are formed in the front face and the top of the sintering box correspondingly, through the design of the lifting assembly, the moving assembly and the heat dissipation assembly, under the cooperative use of the lifting assembly, the moving assembly and the heat dissipation assembly, the lifting assembly enables the opening and closing door to be automatically opened, and the moving assembly moves biological ceramics calcined on the placing plate out of the outside. And the situation that workers are prone to being scalded by instantly discharged hot air due to the fact that the bin door of the sintering bin is directly opened is avoided, biological ceramics moved to the outside are cooled through work of the heat dissipation assembly, the biological ceramic cooling time is rapidly shortened, and the biological ceramic processing speed is increased.

The invention relates to the technical field of metal prostheses, in particular to a composite porous biological ceramic metal prosthesis and a preparation method thereof.The composite porous biological ceramic metal prosthesis comprises a metal matrix, the metal matrix is made of Ti6Al4V alloy and has a 30-70% gradient porosity structure, and the aperture range is 200-600 micrometers; the surface of the metal matrix is covered with the biological ceramic coating, and the biological ceramic coating is composed of the following components in parts by weight: 60-80 parts of hydroxyapatite HA; according to the present invention, the excellent mechanical property and the biocompatibility of the Ti6Al4V alloy are utilized, and the structural characteristics of the natural bone tissue are simulated through the design of the gradient porous structure; on the nanoscale, the synergistic effect of the HA and the beta-TCP crystals creates a dynamically changing biological activity interface. The stable structure of the HA provides a good adhesion matrix for cells, and the moderate degradation of the beta-TCP continuously releases calcium and phosphorus ions.

The present invention relates to a diaphragm coating composition, a composite diaphragm, a secondary battery and an electrical device, and belongs to the field of battery technology. The diaphragm coating composition of the present invention comprises polyvinylidene fluoride and its copolymer derivatives, a ceramic material and a water-soluble high molecular polymer, and satisfies 3%≤C / (A+B)≤15%; wherein A is the weight fraction of the polyvinylidene fluoride and its copolymer derivatives, B is the weight fraction of the ceramic material, and C is the weight fraction of the water-soluble high molecular polymer; the weight average molecular weight of the polyvinylidene fluoride and its copolymer derivatives is ≤1 million g / mol. The porous coating formed by the diaphragm coating composition not only has a uniform macroporous structure to accelerate lithium ion transmission, but also has good bonding performance with the pole piece.

The utility model relates to the technical field of disinfection of hydroxyapatite biological ceramics, in particular to a disinfection device of hydroxyapatite biological ceramics, which comprises a disinfection tank component, a high-pressure-resistant cover component and a base. A high-pressure-resistant cover assembly and a base are respectively arranged at the upper end and the lower end of the disinfection tank assembly. Through the arrangement of the water bath pot, the water vapor sterilization pot and the water vapor pot sealing cover, water in the tank body does not make direct contact with the water vapor sterilization pot when boiling, and then exchange of gas in the water vapor sterilization pot is achieved through the vent holes; therefore, the high-temperature and high-pressure water vapor can perform high-temperature sterilization on the hydroxyapatite biological ceramic placed in the water vapor sterilization pot, the hydroxyapatite biological ceramic sterilized by the high-temperature water vapor is not in direct contact with liquid water, and meanwhile, the contact amount of the high-temperature water vapor is increased; and high-temperature and high-pressure steam sterilization and disinfection are carried out on the premise of effectively protecting the hydroxyapatite biological ceramic.

The invention relates to a gutta-percha point raw material formula and a preparation method thereof. The gutta-percha point raw material formula comprises the following components by weight: 30-50% of a matrix material; 30-50% of a biological ceramic component; 5-15% of an antibacterial component; 5-10% of a toughening and bonding component; 1-5% of an auxiliary agent; the auxiliary agent is at least one of a coupling agent and a dispersing agent; the biological ceramic component can induce adhesion and proliferation of bone cells and promote mineralization, and has a bone tissue repair effect, and by adding the biological ceramic component, the bone tissue repair material has excellent biological activity and can promote periapical bone tissue repair; the antibacterial component provides a long-acting bactericidal performance, and by adding the antibacterial component, a patient is not easy to reinfect after an operation, so that the postoperative recurrence rate is reduced; the whole raw materials have excellent biocompatibility and sealing performance, the long-term stability of root canal filling can be improved, and leakage and treatment failure can be avoided.

The invention belongs to the field of biological ceramic materials, and relates to a biological ceramic composite scaffold with a function of catalytically regulating lactic acid metabolism as well as a preparation method and application thereof. The biological ceramic composite scaffold with the function of catalytically regulating lactic acid metabolism comprises a ceramic scaffold matrix with gaps and enzyme-loaded hydrogel filled in the gaps of the ceramic scaffold matrix, and the enzyme-loaded hydrogel is hydrogel formed by loading lactate oxidase and catalase in macromolecular hydrogel. The composite scaffold can catalyze lactic acid to generate pyruvic acid, so that a lactic acid excess bone microenvironment at the initial stage of injury is adjusted, and further physiological behaviors of various cells such as macrophages and mesenchymal stem cells are adjusted, so that a bone microenvironment beneficial to bone defect repair is created, and osteogenesis is promoted.

The application discloses a plastic bone repair composite scaffold loaded with bone morphogenetic protein-2 and a preparation method thereof, and belongs to the technical field of biological repair materials. The preparation method comprises the following steps: mixing biological ceramic powder, modified starch and deionized water to obtain ceramic slurry through wet grinding, printing the ceramic slurry to obtain a biological ceramic scaffold blank, crushing the biological ceramic scaffold blank after sintering treatment to obtain biological ceramic particles; mixing the biological ceramic particles and a collagen fiber slurry, defoaming and then freeze-drying to obtain a ceramic collagen composite scaffold; placing the ceramic collagen composite scaffold into a crosslinking mixed solution for crosslinking, and then sequentially performing water washing, freeze-drying and sterilization to obtain a bone repair porous scaffold; and adding a CBD-rhBMP-2 solution dropwise to the bone repair porous scaffold to obtain the bone repair composite scaffold. The bone repair composite scaffold prepared by the method has good plastic stability and compressive strength, and has good osteogenic activity, and has practical use value.

The invention discloses a biological ceramic microsphere soft tissue injection as well as a preparation method and application thereof, and relates to the technical field of biomedical materials. Comprising the following raw materials in parts by weight: 100-120 parts of a gel carrier and 50-98 parts of biological ceramic microspheres. The invention designs a biological ceramic microsphere soft tissue injection, the soft tissue injection is composed of biological ceramic microspheres and a gel carrier, and the biological ceramic microspheres used in the invention reduce inflammatory response of the biological ceramic microsphere soft tissue injection while ensuring good cell viability, loading capacity and rheological property.

The utility model relates to the technical field of ceramic sintering, and discloses a sintering device for biological ceramic processing. A sliding block is mounted on the surface of a mounting plate, block grooves are formed in the two ends of the outer face of the sliding block, short threaded pipes are arranged in the block grooves, and one end of each short threaded pipe penetrates through the surface of the sliding block to be connected with a second motor; a clamping claw is arranged on the surface of the short threaded pipe; the structure is used for driving the clamping claws to move left and right and at least comprises a group of thread rotating structures; the structure used for driving the center shaft to rotate at least comprises a set of gear rotating structures, the device can accurately clamp and move objects through a clamping jaw system and a thread rotating structure, a second motor drives a short thread pipe, so that a clamping jaw can move left and right, accurate clamping and placing of the objects are achieved, the working efficiency and accuracy are improved, and the device is suitable for popularization and application. According to the device, through the movement of the sliding block on the sliding rail and the rotation function of the center shaft, multi-directional operation and positioning of objects are achieved.

The present invention relates to the technical field of polymer microspheres, and specifically relates to micron-sized polyether ether ketone microspheres and their preparation methods and applications, including the following steps: S1. Dispersing a nano-bio-ceramic material into a mixed solution of polyol and water to form a suspension, and then adding an azo-based bubble generator to form a dispersed mixture; at the same time, dissolving polyether ether ketone in an oxidizing inorganic acid to form a PEEK solution; S2. Heating the dispersed mixture to within the thermal decomposition temperature range of the bubble generator. After the foam starts to form, immediately atomizing and dispersing the PEEK solution into the dispersed mixture where the foam has formed. After the two come into contact, they solidify to form microspheres. After post-treatment, micron-sized polyether ether ketone microspheres are obtained. The microspheres obtained by the method of the present invention have a smaller particle size and a concave-pit type porous structure on the surface. The nano-bio-ceramic material is uniformly dispersed on its surface and inside, ensuring that the microspheres have good long-term stable physical and chemical properties after being made into implants for use.

The invention belongs to the field of biological materials, and relates to a pre-vascularized callus-like organ for accelerating tissue regeneration as well as a preparation method and application of the pre-vascularized callus-like organ. The pre-vascularized callus organ is a pre-vascularized callus organ which is formed by developing composite hydrogel microspheres loaded with silicate biological ceramics, human bone marrow mesenchymal stem cells and endothelial cells in an organ culture medium and has natural callus functional characteristics. Compared with organoids without silicate ceramics, the pre-vascularized callus organoids under regulation and control of silicate active ceramics show excellent endothelial network forming effect, osteogenic differentiation characteristic and mechanical response characteristic. In addition, the pre-vascularized callus-like organ shows more excellent mineralized matrix deposition capability. Therefore, the pre-vascularized callus-like organ regulated and controlled by the magnesium silicate ceramic can effectively accelerate the regeneration of bone tissues in vivo.

The utility model relates to the technical field of hydroxyl phosphorus ash biological ceramic implanters, in particular to a hydroxyl phosphorus ash biological ceramic implanter. According to the technical scheme, the implanting device for the hydroxyl phosphorus ash biological ceramic comprises a bone connecting assembly and further comprises a bone induction growth assembly, a positioning plug pin and a bone nail hole; a bone induced growth assembly is arranged in the bone connecting assembly; and four positioning bolts are uniformly arranged in the bone connecting assembly. The end face of the broken bone layer is inserted and positioned through the positioning bolt of the bone connecting shaft sleeve, then the bone nails penetrate through the bone nail holes to fix the bone connecting assembly, and at the moment, the hydroxyapatite bone connecting base layer between two bones is used for connecting the two ends; the hydroxyapatite bone connection base layer in the whole formed by 3D printing has a large number of pores with stable structures, so that adhesion and growth proliferation and differentiation of bone cells are facilitated, and the growth connection recovery speed of broken bones is increased.

The application provides an automatic biological ceramic production monitoring system based on machine vision, compared with the prior art, the automatic biological ceramic production monitoring system comprises a camera device for acquiring images of biological ceramics in a furnace through an observation window, a monitoring module for receiving images shot by the camera device to judge the firing condition of the biological ceramics in the furnace, and a receiving module for receiving the biological ceramics fired in the furnace, the system combines image processing, automatic judgment and real-time monitoring and other technologies, effectively monitors and analyzes the change of the shape structure of the biological ceramics in the firing process, and makes the biological ceramic production process more stable and efficient.

According to the technical scheme, the compression molding device is characterized by comprising a supporting table, a mold groove is formed in the top face of the supporting table, an air cylinder is fixedly installed on one side of the supporting table, a top cover is arranged on the top face of the supporting table, and the mold groove is formed in the top face of the supporting table. The top cover is fixedly connected with an output shaft of the air cylinder; during use, the cross-shaped rubber block is made of a rubber material, so that the pores are in a closed state, the hydroxyapatite biological ceramic material cannot sink into the pores after entering the mold groove, meanwhile, the situation that subsequent compression molding is irregular due to bending of the cross-shaped rubber block is avoided through supporting of the metal supporting plate, and after compression molding is completed, the cross-shaped rubber block is not prone to falling into the pores. At the moment, a water pump can be started to pump cooling liquid, the cooling liquid is sprayed out through a connecting pipe and opens pores to be sprayed to a finished product, meanwhile, through the effect of the cooling liquid, the finished product is separated through pushing force generated by the cooling liquid while the finished product is cooled, the demolding effect is achieved, and the shape of the finished product is prevented from being damaged.

The process for the manufacture of a bioactive piece of clothing comprises the phases of: supply of at least one synthetic yam encapsulated with at least one antioxidant agent; weave of the yam to obtain one fabric; printing of the fabric with at least one bio-ceramic material to obtain a bioactive fabric; assembly and sewing of a piece of clothing with at least one portion of the bioactive fabric.

The present invention relates to a rare earth zirconium-based ceramic material doped on grain boundaries and surfaces, its preparation method and application, and by using a stepwise doping method, some doping elements are located on the grain boundaries and surfaces of the rare earth zirconium-based ceramic material, and the sintering activity of the rare earth zirconium-based ceramic material can be changed by adjusting the type and content of the doping elements on the grain boundaries and surfaces, thereby adjusting the grain size, grain boundary number and properties of the rare earth zirconium-based ceramic material, and finally optimizing the electrical, mechanical and other properties of the material. The doping method used has the advantages of simple process, low cost and high versatility, can meet the demand for doping elements of different rare earth zirconium-based ceramics, and is suitable for large-scale application. The rare earth zirconium-based ceramic material obtained by adopting the technical solution of the present invention can be used in different fields such as polishing media, optical fiber connectors, mobile phone backplates, dental materials, bioceramics, thermal barrier coatings, oxygen sensors or nitrogen-oxygen sensors, and solid oxide fuel cells.