摘要:
A calcium silicate shaped product is produced by forming an aqueous slurry of calcium silicate hydrate obtained by reacting a calcareous source with a siliceous source dispersed in water under heating; molding said aqueous slurry and heat-treating said molded product under the condition providing the equations (I) and (II);100.ltoreq..theta..multidot.T (I)50.ltoreq..theta..ltoreq.300 (II)wherein .theta. represents a temperature of the inner part of the molded product (.degree.C.) and T represents a time (hour) and providing a percent water loss of the treated molded product of less than 25 wt. %, before drying or steam-curing and drying the molded product.
摘要:
The object of the present invention is to provide a glass composition which has a sufficient bonding strength for bonding a fluorescent film with a glass tube, does not hinder decomposition of the binder and is effective as an adhesive material, and to provide a fluorescent lamp using the glass composition. The object can be achieved by a glass composition, represented by the general formula,xMO.yB.sub.2 O.sub.3.zM'.sub.2 O.sub.3.uM"O.sub.2.vM'".sub.2 O.sub.5in which M is at least one element of Mg, Ca, Sr, Ba and Zn, M' is at least one element of Al, Sc, Y and lanthanoid elements, M" is at least one element of Ti, Zr, Hf, Th and Si, M'" is at least one element of Nb and Ta, x, y, z, u and v satisfy the relationships of 0
摘要翻译:PCT No.PCT / JP95 / 00867 Sec。 371日期1996年1月2日 102(e)日期1996年1月2日PCT提交1995年5月2日PCT公布。 公开号WO95 / 31002 日期:1995年11月16日本发明的目的是提供一种玻璃组合物,其具有用于将荧光膜与玻璃管接合的足够的结合强度,不妨碍粘合剂的分解,并且作为粘合剂有效,并且 使用玻璃组合物提供荧光灯。 该目的可以通过由通式xMO.yB2O3.zM'2O3.uM'O2.vM“2O5表示的玻璃组合物来实现,其中M是至少一种Mg,Ca,Sr,Ba元素和 Zn,M'是Al,Sc,Y和镧系元素的至少一种元素,M“是Ti,Zr,Hf,Th和Si中的至少一种元素,M”是Nb中的至少一种元素, Ta,x,y,z,u和v满足0 = 30,0 / v =30,0.5≤u+ v 50,x + y + z + u + v = 100,以摩尔%表示,以及荧光灯,其中 该玻璃组合物以0.1至10重量%的比例掺入磷光体层中。
摘要:
An electroviscous fluid comprising an electrical insulating liquid and fine particles dispersed therein, wherein the fine particles are spherical particles containing an electrolytic solution, obtained by hydrolysis and polycondensation of a metal alkoxide or its derivative.
摘要:
A process for producing a ceramic implant which comprises creating a powder mixture comprising zirconia and .alpha.-tricalcium phosphate or zirconia and hydroxyapatite, in a weight ratio of 0.05 to 20 on the surface of a molded unsintered product of partially stabilized zirconia, followed by sintering at 1200.degree. to 1550.degree. C. The partially stabilized zirconia may have a BET specific surface area of from 5 to 10 m.sup.2 /g and have been subjected to wet pulverization to increase the BET specific surface area from 1.05 to 2.0 times relative to the starting material.
摘要:
A process for preparing a slender or thin ceramic green body, which comprises discharging a raw material slurry comprising a ceramic powder raw material, a binder and a solvent from a discharge outlet in a slender or thin shape, and then contacting it with a solidifying liquid composed of a liquid in which the solvent is soluble and the ceramic powder raw material and the binder are insoluble or hardly soluble so that the solvent in the slurry is dissolved and removed to form the green body.
摘要:
A piezoelectric actuator comprising a longitudinal effect-type laminated piezoelectric element composed of piezoelectric ceramic sheets laminated in their thickness direction, and a supporting member fixed to one side in the longitudinal direction of the element and being bending and capable of constraining expansion of the element.
摘要:
A method for preparing silica gel particles, which comprises suspending a mixed solution of a silicic acid ester and water in an organic liquid immiscible with the mixed solution, followed by gelation wherein said organic liquid contains an ethyl cellulose having an ethoxy group content of at least 47% by weight and being soluble in the organic liquid.
摘要:
An inorganic fiber composed essentially of fine crystals of an aluminum compound, which contains at least 10% by weight of aluminum nitride and the rest of the aluminum compound being alumina.
摘要:
An aqueous slurry of calcium silicate hydrate which is formed by heating a siliceous source and a calcareous source in water to react them and which has the specific property is shaped with a press filter molding and cured by a steam curing under steam pressure to cause a transformation of the calcium silicate hydrate whereby a calcium silicate shaped product having low bulk density and high mechanical strength is obtained. The calcium silicate shaped product is suitable as a lagging product or a heat insulator.