摘要:
A sintering schedule to allow the reliable formation of inorganic or ceramic materials, exemplified using porous calcium polyphosphate samples to be used for forming novel implants for bone interfacing applications. The key to the successful definition of the process was the determination of the factors affecting the crystallization temperature of the powders that are gravity sintered to form porous samples of desired density and with a pore size range suitable for the particular application. The method involves applying a sintering procedure to a packed amorphous inorganic powder which gives control over densification and includes choosing sintering temperatures and times sequentially that correspond to the inorganic material being amorphous but having a viscosity to develop significant sinter necks between adjacent powder particles by a viscous flow sintering mechanism while maintaining a desired open-pored structure, followed by a second temperature at which crystallization of the packed amorphous inorganic powder occurs and during which slower diffusion-related mechanisms control sinter neck growth and densification to give a substantially crystalline porous, inorganic structure. In addition, interpenetrating phase composites of biodegradable organic polymers throughout the porous calcium polyphosphate samples were formed and resulted in the development of novel composites with attractive strength and toughness. These materials hold promise for formation of biodegradable fracture fixation implants and degradable anchoring systems for temporary stabilization of bone-interfacing implants designed for fixation by bone ingrowth.
摘要:
A porous material comprising vapor grown carbon fiber in an amount of 10 to 90 mass %, fiber filaments of the carbon fiber forming a three-dimensional network and having a diameter of 1 to 1,000 nm, an aspect ratio of 5 to 15,000, a specific surface area (by BET method) of 2 to 2,000 m 2 /g, and the ratio of the intensity of the peak at 1,360 cm -1 in a Raman scattering spectrum of the carbon fiber to that of the peak at 1,580 cm -1 in the spectrum(I 1360 /I 1580 ) is 0.1 to 2.0, wherein the porosity of the porous material (V/V 0 ) is 0.50 to 0.99 and a specific surface area is 5 to 1,000 m 2 /g; and a production method and use thereof. The vapor grown carbon fiber impregnated in the porous material of the present invention does not contain aggregates and a three-dimensional network is formed between the fiber filaments, wherein length of each of the fiber filaments is maintained.; Therefore, the vapor grown carbon fiber enables to readily produce a composite material (porous material), in which even a small amount of addition of vapor grown carbon fiber can exhibit sufficient effect.
摘要:
The invention relates to concrete with a smooth surface, coated completely or partially with a polymer film obtained by means of radiation-induced polymerisation, said film in turn being coated completely or partially with a thin photovoltaic film.
摘要:
A porous material comprising vapor grown carbon fiber in an amount of 10 to 90 mass %, fiber filaments of the carbon fiber forming a three-dimensional network and having a diameter of 1 to 1,000 nm, an aspect ratio of 5 to 15,000, a specific surface area (by BET method) of 2 to 2,000 m 2 /g, and the ratio of the intensity of the peak at 1,360 cm -1 in a Raman scattering spectrum of the carbon fiber to that of the peak at 1,580 cm -1 in the spectrum(I 1360 /I 1580 ) is 0.1 to 2.0, wherein the porosity of the porous material (V/V 0 ) is 0.50 to 0.99 and a specific surface area is 5 to 1,000 m 2 /g; and a production method and use thereof. The vapor grown carbon fiber impregnated in the porous material of the present invention does not contain aggregates and a three-dimensional network is formed between the fiber filaments, wherein length of each of the fiber filaments is maintained.; Therefore, the vapor grown carbon fiber enables to readily produce a composite material (porous material), in which even a small amount of addition of vapor grown carbon fiber can exhibit sufficient effect.
摘要翻译:包括蒸汽的多孔材料在按质量计的10至90%的量的生长的碳纤维中,碳纤维形成的三维网络和具有直径为1至1,000nm的纤维丝,在5至15,000的纵横比,特定的 的2至2,000米2 /克的表面积(通过BET法),和该峰的强度中的1360厘米比率-1中的碳纤维的峰的拉曼散射光谱的那样在1580厘米-1在 频谱(I 1360 / I 1580)为0.1〜2.0,worin多孔材料的孔隙率(V / V 0)为0.50〜0.99和的比表面积是5〜1000米2 /克; 及其制造方法及其用途。 在一个三维网络本发明不包含聚集体的多孔材料和浸渍的气相生长碳纤维在纤维丝之间形成,每个所述纤维丝的长度worin维持。 因此,气相生长碳纤维使容易地制造复合材料(多孔材料),其中甚至除了气相生长碳纤维的少量可以表现出充分的效果。
摘要:
A porous material comprising vapor grown carbon fiber in an amount of 10 to 90 mass%, fiber filaments of the carbon fiber forming a three-dimensional network and having a diameter of 1 to 1,000 nm, an aspect ratio of 5 to 15,000, a specific surface area (by BET method) of 2 to 2,000 m2/g, and the ratio of the intensity of the peak at 1,360 cm-1 in a Raman scattering spectrum of the carbon fiber to that of the peak at 1,580 cm -1 in the spectrum(I1360/I1580) is 0.1 to 2.0, wherein the porosity of the porous material (V/V0) is 0.50 to 0.99 and a specific surface area is 5 to 1,000 m2/g; and a production method and use thereof. The vapor grown carbon fiber impregnated in the porous material of the present invention does not contain aggregates and a three-dimensional network is formed between the fiber filaments, wherein length of each of the fiber filaments is maintained. Therefore, the vapor grown carbon fiber enables to readily produce a composite material (porous material), in which even a small amount of addition of vapor grown carbon fiber can exhibit sufficient effect.