CN109095446A - A kind of biophasic calcium phosphate ceramic material and preparation method thereof - Google Patents

A kind of biophasic calcium phosphate ceramic material and preparation method thereof Download PDF

Info

Publication number
CN109095446A
CN109095446A CN201810980246.8A CN201810980246A CN109095446A CN 109095446 A CN109095446 A CN 109095446A CN 201810980246 A CN201810980246 A CN 201810980246A CN 109095446 A CN109095446 A CN 109095446A
Authority
CN
China
Prior art keywords
calcium phosphate
preparation
ceramic material
bone
biophasic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810980246.8A
Other languages
Chinese (zh)
Inventor
张隆
张骋
丁浩杰
王少海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Institute of Technology
Original Assignee
Shanghai Institute of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Institute of Technology filed Critical Shanghai Institute of Technology
Priority to CN201810980246.8A priority Critical patent/CN109095446A/en
Publication of CN109095446A publication Critical patent/CN109095446A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00Phosphorus; Compounds thereof
    • C01B25/16Oxyacids of phosphorus; Salts thereof
    • C01B25/26Phosphates
    • C01B25/32Phosphates of magnesium, calcium, strontium, or barium
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/447Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on phosphates, e.g. hydroxyapatite
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00Crystal-structural characteristics
    • C01P2002/70Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/72Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00Crystal-structural characteristics
    • C01P2002/80Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
    • C01P2002/82Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by IR- or Raman-data
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/01Particle morphology depicted by an image
    • C01P2004/03Particle morphology depicted by an image obtained by SEM
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/60Particles characterised by their size
    • C01P2004/62Submicrometer sized, i.e. from 0.1-1 micrometer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials For Medical Uses (AREA)

Abstract

The present invention provides a kind of biophasic calcium phosphate ceramic materials and preparation method thereof.The biophasic calcium phosphate ceramic material, which is characterized in that its preparation step includes: to be boiled using hairtail as raw material, removes organic matter, and resulting fish-bone is dry, and calcined fish-bone is immersed in Na by calcining4P2O7·10H2It in O solution, takes out, dry, grinding obtains the biphasic calcium phosphate material containing hydroxyapatite and beta-calcium phosphate.Raw material sources of the present invention are abundant, can get in major fishery market, and preparation cost is low, and the biphasic calcium phosphate prepared does not have more impurity, can control the component ratio of biophasic calcium phosphate ceramic material by adjusting soak concentration just.The raw material natural environmental-protective that the invention uses, the biphasic calcium phosphate prepared are more pure.

Description

A kind of biophasic calcium phosphate ceramic material and preparation method thereof
Technical field
The present invention relates to biomedical ceramics fields, specifically, being a kind of preparation side of biophasic calcium phosphate ceramic material Method.
Background technique
Failure, the damage of tissue and organ are one of main problems that clinical medicine faces.The whole world is every year because each Fracture caused by kind reason and bone defect injury number reach several ten million.In China, injury number is also being quicklyd increase, according to civil administration Section report, bone defect patient nearly 3,000,000.Traditional bone renovating material can not meet the requirement of contemporary clinical medicine, more Carry out more researcher and finds that the degradation rate of the biophasic calcium phosphate ceramic material containing hydroxyapatite and beta-calcium phosphate can be with Promote the formation of area of new bone.
Domestic and foreign scholars prepare biphasic calcium phosphate using the method for the commercial synthesis such as wet process, chemical precipitation method, these biographies New impurity can be introduced in the product that the preparation method of system obtains, preparation process is complicated, at high cost.
Summary of the invention
The object of the present invention is to provide a kind of cheap, preparation sides of the simple biophasic calcium phosphate ceramic material of process Method.
In order to achieve the above object, the present invention provides a kind of biophasic calcium phosphate ceramic materials, which is characterized in that it is prepared Step includes: to be boiled using hairtail as raw material, removes organic matter, and resulting fish-bone is dry, calcining, by calcined fish-bone It is immersed in Na4P2O7·10H2It in O solution, takes out, dry, grinding obtains the two-phase phosphorus containing hydroxyapatite and beta-calcium phosphate Sour calcium material.
Preferably, the partial size of the biphasic calcium phosphate material is 300-500nm.
The present invention also provides the preparation methods of above-mentioned biophasic calcium phosphate ceramic material, which is characterized in that including following Step:
A, it boils: hairtail is boiled, remove the organic matter and grease stain on hairtail vertebral bony surfaces;
B, drying: the resulting fish-bone of step A is subsequently placed in drying box dry;
C, it is sintered: fish-bone of the step B after dry being placed in Muffle furnace and is calcined;
D, it impregnates: the calcined fish-bone of step C is immersed in Na4P2O7·10H2It in O solution, then takes out, is put into drying It is dried in case;
E, it grinds: fish-bone sample of the step D after dry being placed in mortar, powder is ground into.
Preferably, drying box temperature programmed control is 15-20 minutes a length of when dry at 65-75 DEG C in the step B.
Preferably, for Muffle furnace temperature programmed control at 850-950 DEG C, heating rate is 4-6 DEG C/min in the step C, is protected The warm time is 1-2 hours.
Preferably, Na in the step D4P2O7·10H2The concentration of O solution is 0.02mol/L-0.1mol/L.
Most preferably, Na in the step D4P2O7·10H2The concentration of O solution is 0.06mol/L.
Preferably, the soaking process in the step D carries out in drying box, and temperature is set as 65-75 DEG C, dry 20- 30 hours.
Preferably, the biphasic calcium phosphate material contains the hydroxy-apatite of circular beta-calcium phosphate particle and corynebacterium Stone crystal whisker.
Raw material used in the present invention is band fish-bone, and the acquisition of raw material is extremely convenient, by boiling removal organic matter and oil Then stain is dried, then the band fish-bone after drying is placed in the calcining of Muffle furnace high temperature, and calcined fish-bone sample is immersed in not With the Na of concentration4P2O7·10H2In O solution, it is put into drying in drying box, calcined fish-bone is finally worn into powder with mortar For characterize in product whether the biophasic calcium phosphate ceramic material containing hydroxyapatite and beta-calcium phosphate mixture.
Compared with prior art, the beneficial effects of the present invention are:
The present invention uses Na4P2O7·10H2O solution impregnates fish-bone to extract biophasic calcium phosphate ceramic material, this preparation Method is cheap, and process is simple, and the product extracted is purer, can control biphasic calcium phosphate only by adusting soak concentration The component ratio of ceramic material.
Raw material sources of the present invention are abundant, can get in major fishery market, preparation cost is low, the two-phase prepared Calcium phosphate does not have more impurity, can control the component ratio of biophasic calcium phosphate ceramic material by adjusting soak concentration just.This hair The bright raw material natural environmental-protective used, the biphasic calcium phosphate prepared are more pure.
Detailed description of the invention
Fig. 1 is the band fish-bone picture calcined at 900 DEG C.
Fig. 2 is band fish-bone in 700 DEG C, 800 DEG C and 900 DEG C calcined X-ray diffractogram (Na4P2O7·10H2O solution Concentration is 0.06mol/L).
Fig. 3 is 900 DEG C of calcined Na being immersed under various concentration with fish-bone4P2O7·10H2X-ray in O solution Diffraction pattern.
Fig. 4 is the infared spectrum with fish-bone under 900 DEG C of calcination temperatures.
Fig. 5 is the microsctructural photograph with fish-bone at 900 DEG C.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited Range.
Embodiment 1
A kind of preparation method of biophasic calcium phosphate ceramic material, specific steps are as follows:
Raw material: fishbone of hairtail, the place of production: being distributed mainly on Western Pacific and the Indian Ocean, the Huanghai Sea, the East Sea, the Bohai Sea in China Until the South Sea is all distributed.
It boils: hairtail is placed in boiling water about three hours, repeat this operation 3-4 times, completely remove and be attached to hairtail ridge The organic substance and grease stain of vertebral surface.
It is dry: next processed fish-bone to be placed in thermostatic drying chamber, temperature is transferred to 70 degrees Celsius, dry 15- 20 minutes, to remove remaining moisture on fish-bone.
Sintering: after the completion of dry, fish-bone is placed in Muffle furnace and is calcined, then starts setting up program, temperature programmed control is 900 DEG C, heating rate is 5 DEG C/min, and soaking time is 1-2 hours, and atmosphere is air.
Impregnate: it is respectively 0.02mol/L, 0.04mol/L, 0.06mol/ that calcined fish-bone sample, which is immersed in concentration, L, the Na of 0.08mol/L, 0.1mol/L4P2O7·10H212 hours in O solution, then takes out and be put into drying box dry, temperature Degree is set as 70 DEG C, drying 24 hours;
Grinding: the fish-bone sample after immersion and drying is placed in mortar, powder is ground into, as contains hydroxyapatite With the biphasic calcium phosphate material of beta-calcium phosphate.
Embodiment 2
A kind of preparation method of biophasic calcium phosphate ceramic material is similar to embodiment 1, and difference is: in calcining step, temperature Degree is 700 DEG C and 800 DEG C.
Embodiment 3: the constituent analysis in calcined product
In order to understand fish-bone sample at being grouped as, using X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) calcined product in embodiment 1 and embodiment 2 is analyzed.
Contain hydroxyapatite and beta-calcium phosphate phase in calcined band fish-bone sample from can be seen that in XRD diagram, and As the temperature rises, the diffraction maximum of hydroxyapatite reduces, and the diffraction maximum of beta-calcium phosphate increases instead, this also means that β-phosphorus The relative amount of sour calcium gradually increases, as shown in Figure 2.From here it may be concluded that temperature is to influence biphasic calcium phosphate One of an important factor for middle hydroxyapatite and beta-calcium phosphate component ratio.
Under mutually synthermal (900 DEG C), calcined fish-bone sample is immersed in various concentration, and the result obtained is also to have Difference.From 0.04mol/L to 0.08mol/L within the scope of this, it can be seen that when soak concentration is 0.06mol/L It waits, the diffraction peak intensity of beta-calcium phosphate is clearly more prominent with respect to the peak intensity of hydroxyapatite, as shown in Figure 3.Therefore, at five In concentration, effect is best when soak concentration is 0.06mol/L.
The method for carrying out constituent analysis to calcined product in embodiment 1 using Fourier transform infrared spectroscopy is as follows: using 670 spectrometer of Agilent Cary is in 4000-400cm-1With 1cm in range-1Resolution ratio carried out under absorbance patterns, will Sample and anhydrous potassium bromide are mixed with the ratio of 1:50 and are pressed into thin rounded flakes and analyzed.It can be found that leaching from infared spectrum Bubble liquid concentration occur the characteristic peak of apparent beta-calcium phosphate when 0.04-0.08mol/L, this be also from XRD diagram only The reason of analyzing these three concentration, as shown in Figure 4.
Embodiment 4: the microstructure and morphology analysis of calcined product
It is in pure white after 1 gained band fish-bone calcining of embodiment, as shown in Figure 1.Using scanning electron microscope it can be observed that circle Beta-calcium phosphate particle and a little corynebacterium hydroxyapatite crystal whisker, particle size is between 300-500nm, such as Fig. 5 institute Show.
Fig. 5 represents soak concentration as the micrograph under 0.04,0.06,0.08mol/L.Beta-calcium phosphate in a and c figure Particle is smaller, and arrangement is compact, is easy to happen agglomeration, and the boundary in b figure between crystal grain is than more visible, convenient Fluid is transmitted by hole.
The embodiment of the present invention combination attached drawing is illustrated above, those skilled in the art are without prejudice to the present invention The present invention can be modified or be changed under the premise of creative spirit, these equivalent variation or replacement are all contained in the application In claim limited range.

Claims (9)

1. a kind of biophasic calcium phosphate ceramic material, which is characterized in that its preparation step includes: to be boiled, gone using hairtail as raw material Except organic matter, resulting fish-bone is dry, calcined fish-bone is immersed in Na by calcining4P2O7·10H2In O solution, take out, Dry, grinding obtains the biphasic calcium phosphate material containing hydroxyapatite and beta-calcium phosphate.
2. biophasic calcium phosphate ceramic material as described in claim 1, which is characterized in that the grain of the biphasic calcium phosphate material Diameter is 300-500nm.
3. the preparation method of biophasic calcium phosphate ceramic material of any of claims 1 or 2, which comprises the following steps:
A, it boils: hairtail is boiled, remove the organic matter and grease stain on hairtail vertebral bony surfaces;
B, drying: the resulting fish-bone of step A is subsequently placed in drying box dry;
C, it is sintered: fish-bone of the step B after dry being placed in Muffle furnace and is calcined;
D, it impregnates: the calcined fish-bone of step C is immersed in Na4P2O7·10H2It in O solution, then takes out, is put into drying box It is dried;
E, it grinds: fish-bone sample of the step D after dry being placed in mortar, powder is ground into.
4. the preparation method of biophasic calcium phosphate ceramic material as claimed in claim 3, which is characterized in that in the step B Drying box temperature programmed control is 15-20 minutes a length of when dry at 65-75 DEG C.
5. the preparation method of biophasic calcium phosphate ceramic material as claimed in claim 3, which is characterized in that in the step C For Muffle furnace temperature programmed control at 850-950 DEG C, heating rate is 4-6 DEG C/min, and soaking time is 1-2 hours.
6. the preparation method of biophasic calcium phosphate ceramic material as claimed in claim 3, which is characterized in that in the step D Na4P2O7·10H2The concentration of O solution is 0.02mol/L-0.1mol/L.
7. the preparation method of biophasic calcium phosphate ceramic material as claimed in claim 3, which is characterized in that in the step D Na4P2O7·10H2The concentration of O solution is 0.06mol/L.
8. the preparation method of biophasic calcium phosphate ceramic material as claimed in claim 3, which is characterized in that in the step D Soaking process carried out in drying box, temperature is set as 65-75 DEG C, 20-30 hours dry.
9. the preparation method of biophasic calcium phosphate ceramic material as claimed in claim 3, which is characterized in that the two-phase phosphoric acid Calcium material contains the hydroxyapatite crystal whisker of circular beta-calcium phosphate particle and corynebacterium.
CN201810980246.8A 2018-08-27 2018-08-27 A kind of biophasic calcium phosphate ceramic material and preparation method thereof Pending CN109095446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810980246.8A CN109095446A (en) 2018-08-27 2018-08-27 A kind of biophasic calcium phosphate ceramic material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810980246.8A CN109095446A (en) 2018-08-27 2018-08-27 A kind of biophasic calcium phosphate ceramic material and preparation method thereof

Publications (1)

Publication Number Publication Date
CN109095446A true CN109095446A (en) 2018-12-28

Family

ID=64851219

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810980246.8A Pending CN109095446A (en) 2018-08-27 2018-08-27 A kind of biophasic calcium phosphate ceramic material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN109095446A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113952504A (en) * 2021-10-29 2022-01-21 华南理工大学 Selenium-doped coral/hydroxyapatite scaffold and preparation method thereof
CN115300668A (en) * 2022-06-24 2022-11-08 上海市东方医院(同济大学附属东方医院) Bi-phase calcium phosphate porous biological ceramic bone scaffold material derived from pomfret bones and preparation method and application thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1255464A (en) * 1998-11-26 2000-06-07 瑞安大药厂股份有限公司 Process for preparing porous ceramic material
RU2013134721A (en) * 2013-07-24 2015-01-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный университет имени М.В. Ломоносова" (МГУ) METHOD FOR PRODUCING SUBMICRON BIPHASIC CERAMICS BASED ON TRICALCIUM PHOSPHATE AND HYDROXYAPATITIS
CN105084336A (en) * 2014-05-23 2015-11-25 中国科学院金属研究所 Two-phase calcium phosphate material, preparation method thereof, and two-phase calcium phosphate artificial bone ceramic
CN106699162A (en) * 2016-11-18 2017-05-24 华南理工大学 Arsenic-doped hydroxyapatite/calcium phosphate powder and preparation method thereof
CN107456605A (en) * 2017-07-13 2017-12-12 上海长海医院 A kind of biphasic calcium phosphate porous bio-ceramic bone holder material and preparation method and application

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1255464A (en) * 1998-11-26 2000-06-07 瑞安大药厂股份有限公司 Process for preparing porous ceramic material
RU2013134721A (en) * 2013-07-24 2015-01-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный университет имени М.В. Ломоносова" (МГУ) METHOD FOR PRODUCING SUBMICRON BIPHASIC CERAMICS BASED ON TRICALCIUM PHOSPHATE AND HYDROXYAPATITIS
CN105084336A (en) * 2014-05-23 2015-11-25 中国科学院金属研究所 Two-phase calcium phosphate material, preparation method thereof, and two-phase calcium phosphate artificial bone ceramic
CN106699162A (en) * 2016-11-18 2017-05-24 华南理工大学 Arsenic-doped hydroxyapatite/calcium phosphate powder and preparation method thereof
CN107456605A (en) * 2017-07-13 2017-12-12 上海长海医院 A kind of biphasic calcium phosphate porous bio-ceramic bone holder material and preparation method and application

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ZHU QINGFENG ET AL: ""The preparation and characterization of HA/β-TCP biphasic ceramics from fish bones"", 《CERAMICS INTERNATIONAL》 *
王迎军: "《生物医用陶瓷材料》", 31 October 2010, 华南理工大学出版社 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113952504A (en) * 2021-10-29 2022-01-21 华南理工大学 Selenium-doped coral/hydroxyapatite scaffold and preparation method thereof
CN113952504B (en) * 2021-10-29 2022-12-16 华南理工大学 Selenium-doped coral/hydroxyapatite scaffold and preparation method thereof
CN115300668A (en) * 2022-06-24 2022-11-08 上海市东方医院(同济大学附属东方医院) Bi-phase calcium phosphate porous biological ceramic bone scaffold material derived from pomfret bones and preparation method and application thereof
CN115300668B (en) * 2022-06-24 2024-01-23 上海市东方医院(同济大学附属东方医院) Pomfret bone-derived biphasic calcium phosphate porous bioceramic bone scaffold material, and preparation method and application thereof

Similar Documents

Publication Publication Date Title
Mondal et al. Processing of natural resourced hydroxyapatite ceramics from fish scale
CN109095446A (en) A kind of biophasic calcium phosphate ceramic material and preparation method thereof
CN107235759A (en) Charcoal phosphorus composite fertilizer and the method that charcoal phosphorus composite fertilizer is prepared using sludge
Silaev et al. Mineralogical–geochemical characteristics of the bone detritus of Pleistocene mammals as a source of paleontological information
CN107311145A (en) A kind of fluorescent carbon point for the method and its preparation that fluorescent carbon point is prepared by raw material of silkworm excrement
CN105126160A (en) Hydroxyapatite scaffold material with graphene-modified surface and preparation method of hydroxyapatite scaffold material
CN105663527A (en) Processing method suitable for rhizoma pinellinae praeparata and rhizoma typhonii flagelliformis
CN107188205A (en) The technique that a kind of acidization extracts lithium sulfate from amblygonite
Li et al. Kinetics and fractionation of carbon and oxygen isotopes during the solid-phase transformation of biogenic aragonite to calcite: The effect of organic matter
CA2849468C (en) Method of preparing porous carbonate apatite from natural bone
CN114456809A (en) Magnesium modified bamboo dust charcoal and application thereof in soil carbon sequestration and emission reduction
CN108358183A (en) Process for preparing tetracalcium phosphate
CN109748475A (en) A kind of method of bio oil deacidification upgrading
CN106892833A (en) Improve the method and extract for obtaining the beautiful middle amino acid of promise, vitamin and general anthraquinone
CN107254005B (en) A kind of method that ball milling pretreatment combination sour water solution prepares nanometer starch crystal
Asimeng et al. Biomaterial for bone and dental implants: synthesis of B-type carbonated hydroxyapatite from biogenic source
KR102080583B1 (en) Manufacturing method of young Ginseng powder with enhanced ginsenoside
TWI656248B (en) Calcium phosphorus compound and method for making calcium and phosphorus compound containing magnesium and strontium
CN106938913A (en) A kind of riverway sludge fired brick preparation method
Tri Wahyudi et al. Simple and easy method to synthesize chicken eggshell based hydroxyapatite
Fara et al. Effect of calcination on the properties of hydroxyapatite from Tilapia fish bones
KR100720764B1 (en) Manufacturing method for lime fertilizer
TWI380832B (en) Porous bio-material and method of preparation thereof
CN110230101A (en) Prepare method of the rare earth-doped calcium tungstate crystal for quantitative correction element
CN106512086B (en) A kind of doped yttrium calcium phosphate bone cement and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20181228