摘要:
An organic porous material is provided being excellent in mechanical properties such as strength and in which structures of a skeleton and pores are controlled more precisely. By a production process including (i) subjecting a low molecular compound having living radical and/or anionic polymerizability to living radical or anionic polymerization in a system including the compound, an organic polymer as a phase separation inducing component, a polymerization initiator, and a polymerization solvent, and thereby forming a gel including a skeletal phase rich in a polymer of the compound and a solvent phase rich in the solvent and having a co-continuous structure formed of the skeletal and solvent phases, and (ii) removing the solvent from the gel thus formed to form a skeleton containing the polymer as a base material thereof from the skeletal phase while forming first pores from the solvent phase, and thereby obtaining an organic porous material with a co-continuous structure formed of the skeleton and the first pores.
摘要:
A support for solid phase extraction is provided for preventing the fracture of the porous body of the support and the space between the porous body and its container, and for processing various amounts of liquids to be processed while maintaining the ease of passage of liquid in use. The support for solid phase extraction comprises a ceramic substrate with one or more holes formed therein, and an inorganic porous material, filled in the hole or holes, which is produced by sol-gel transition accompanied by phase transition.
摘要:
Disclosed is a method for producing an inorganic porous body having precisely controlled macropores concurrently with mesopores of a narrow pore size distribution. The method comprises dissolving an amphiphilic substance as template component in an aqueous solution containing a sol-gel reaction catalyst, adding an inorganic low molecular weight compound having hydrolysable functional groups to the solution, forming a gel including a solvent-rich phase for the macropores, drying the gel to remove the solvent, and removing the template component by such means as thermal decomposition.
摘要:
Provided is an absorption column for body fluid purification by which the saturated adsorption amount of a substance to be adsorbed can be increased or the time required for reaching the saturated adsorption can be shortened, and therefore, the column capacity can be considerably reduced and the treatment time can be considerably shortened. The adsorption column having functional groups 6 specifically binding to a substance to be adsorbed including at least low density lipoprotein, immobilized on the surface of a porous support 5. The porous support 5 has double-pore structure comprising: a skeleton 7 made of a silica gel or silica glass having a three-dimensional network structure; through-pores 8 of an average diameter measured by the mercury intrusion method of 1 μm or more but less than 4 μm and having a three-dimensional network structure, which are formed in the voids of the skeleton; and micropores 9 having an average diameter measured by the mercury intrusion method larger than the grain diameter of the substance to be adsorbed, which are dispersedly formed on the surface of the skeleton.
摘要:
A stator of a rotating electric machine is obtained, in which material usage in a conductor connection section of a stator coil end and weight of the conductor connection section are reduced, so that vibration suppression is improved, in addition, thermal resistance between a loss occurrence portion and a cooled portion becomes smaller so that temperature rise is suppressed. It is configured that a stator has first and second wire groups disposed at an inner diameter side of a slot, third and fourth wire groups disposed at an outer diameter side of the slot, and a connection conductor for connecting the respective, two wire groups to each other in a radial direction, wherein the stator further has a connection conductor which has one end being interposed between projected ends of the first and second wire groups, and connected to the respective projected ends, and has the other end being interposed between projected ends of the third and fourth wire groups, and connected to the respective projected ends, in addition, has axial through-holes, which communicate with flow paths of coolant flow members provided between the wire groups, in the one end and the other end respectively.
摘要:
A method for producing an alkylsiloxane aerogel of the invention includes (a) a step of letting a reaction to produce a sol and a reaction to convert the sol to a gel take place in one step by adding a silicon compound whose molecules have a hydrolysable functional group and a nonhydrolysable functional group to an acidic aqueous solution containing a surfactant, and (b) a step of drying the gel produced in the step (a). In the step (b), the gel is dried at a temperature and a pressure below the critical point of a solvent used to dry the gel.
摘要:
A structure having an opening communicating with an inner space is adapted for separating or capturing a substance introduced from the opening into the inner space. The structure comprises a hollow member having the inner space with the opening and plural pillars positioned mutually separately in the inner space. The pillars are formed of a material containing an inorganic oxide and different in composition from the hollow member.
摘要:
Silica aerogels that are controlled in pore diameter and pore diameter distribution can be produced as follows: a surfactant is dissolved in an acidic aqueous solution; a silicon compound having a hydrolysable functional group and a hydrophobic functional group is added thereto, so that a hydrolysis reaction is carried out to yield a gel; and after the gel is solidified, the gel is dried supercritically. Preferably, the surfactant is one selected from the group consisting of a nonionic surfactant, a cationic surfactant, and an anionic surfactant, or a mixture of at least two of them. The silica aerogels produced as described above are usable for heat insulators for solar-heat collector panels or heat-insulating window materials for housing.
摘要:
The porous substrate, comprises: three-dimensional-network skeletal solid phase inside the substrate, and a skin layer same in quality as the skeletal solid phase formed on at least one surface of the substrate, and a production method thereof, comprising: forming a wet gel having a three-dimensional-network skeletal solid phase and a fluid phase rich in solvent that are separated from each other in a space between a pair of flat plates by sol-gel reaction, removing the solvent in the wet gel by drying, and removing at least one flat plate of the pair of flat plates.
摘要:
The aggregation and phase separation of inorganic particles are performed in a sol containing the inorganic particles and a solvent to produce a porous body having open pores. Preferably, the inorganic particles are particles of one or more inorganic material selected from the group consisting of titania, silica, alumina, zinc oxide and zirconia. Further, the sol may have strong acidity and the pH of the sol is elevated to perform the aggregation and phase separation of the inorganic particles. Alternatively, the sol may have strong basicity and the pH of the sol is lowered to perform the aggregation and phase separation of the inorganic particles. The present invention provides a novel method of producing a porous body and sintered body having co-continuous structure, applicable to a wide variety of inorganic materials.