摘要:
Sol-gel methods, apparatus and compositions for cladding optical fiber cores provide optical fibers, including single crystal optical fiber cores with polycrystalline cladding, having improved performance in a variety of applications, such as fiber lasers.
摘要:
The invention relates to a nontoxic polysiloxane material and ripened polysiloxane material which has been formed using one or more different polysiloxane materials. According to the invention, such a ripened polysiloxane material can be spun, for example, into bioabsorbable and/or bioactive fibers and then be further processed into fibrous nonwoven webs.
摘要:
An object is to provide a silica-based composite oxide fiber which is a continuous fiber high in strength and has, in the fiber surface thereof, mesopores each having an appropriate size, and to provide a catalyst fiber, containing the silica-based composite oxide fiber, in which a noble metal catalyst can be selectively carried into its pores, whereby preventing sintering of the noble metal catalyst.The silica-based composite oxide fiber comprises a composite oxide phase composed of an oxide phase made mainly of a silica component (first phase) and a metal oxide phase comprising one or more metals other than silica (second phase), wherein a content by percentage of at least one of metal elements of metal oxides constituting the metal oxide phase (second phase) increases with a gradient toward a surface of the fiber, and wherein the metals that constitute the metal oxide phase (second phase) are in the form of particles, and mesopores extending from the fiber surface to the inside of the fiber and having an average pore diameter of 2 to 30 nm are formed between the particles.
摘要:
There are provided a high-strength zirconia-containing inorganic fiber having excellent alkali resistance, oxidation resistance, catalyst function and/or catalyst-carrying function and a process for the production thereof. The zirconia-containing inorganic fiber is a fiber which is formed of a composite oxide phase comprising a first phase mainly formed of a silica component or silicon carbide and a second phase formed of zirconia, and it is characterized in that the ratio of Zr slopingly increases toward the surface layer of the fiber.
摘要:
A method for dry-spinning a metal alkoxide sol to form fibers which may be gathered and wound in a conventional manner, wherein the atmosphere in the spin chamber comprises ammonia to dry the fibers to a non-sticky state.
摘要:
Water-containing water glass fibers are disclosed, substantially free from non-alkaline compounds and having a water content of from about 15 to 30% by weight, a tear strength of from about 5 to 30 cN/tex, a ratio of alkaline oxide to silicon dioxide of from about 1:3 to 1:1.9, an amorphous structure and a density of from about 2 g/cm.sub.3 to 2.5 g/cm.sup.3. The fibers are preferably cut into lengths of from 1 to 40 mm. They may be used for subsequent production of silica fibers, a technique more advantageous than producing the latter from a melt containing SiO.sub.2 or by acid-leaching of glass fibers. The silica fibers are useful for producing wet webs, filter linings and reinforcing material.
摘要翻译:公开了含水水玻璃纤维,基本上不含非碱性化合物,水含量为约15至30重量%,撕裂强度为约5至30cN / tex,碱性氧化物与 约1:3至1:1.9的二氧化硅,无定形结构和约2g / cm 3至2.5g / cm 3的密度。 纤维优选切割成1至40mm的长度。 它们可以用于随后生产二氧化硅纤维,这种技术比从含有SiO 2的熔体或通过酸浸玻璃纤维制备后者更有利。 二氧化硅纤维可用于生产湿网,过滤衬垫和增强材料。
摘要:
In producing silica glass, which may contain additional metal(s) such as Ti or Zr, from a solution of a silicon alkoxide, mixed with alkoxide(s) of the additional metal(s) where necessary, in water and a hydrophilic organic solvent by shaping the solution into a desired form such as a coating film on a substrate, self-supporting film, fiber or lump when the solution exhibits a suitably high viscosity and sufficiently heating the shaped solution, a water-soluble organic polymeric substance is added to the solution as a viscosity adjusting agent to soon increase the viscosity of the solution to the desirable level. Therefore, shaping of the solution can be performed without awaiting the progress of hydrolysis of the alkoxide in the solution, and the glass can be obtained with improved uniformity of its properties. A cellulose ether is preferred as the viscosity adjusting agent, and hydroxypropyl cellulose is particularly preferable.
摘要:
An installation for melting a composition of raw materials, suitable for obtaining glass wool, textile glass yarns and/or flat glass, includes a melting chamber equipped with at least one submerged burner, wherein the melting chamber is defined by side walls made of refractory material and a bare metal bottom traversed by a network of pipes adapted for the circulation of a cooling fluid.
摘要:
Provided are inorganic fibers which can exhibit high biosolubility and have excellent heat resistance as the constituting material for a filter material, a sealing material or the like, while exerting minimized effects on the human body or the living environment even when the fibers have an average diameter of 1 μm or less. Inorganic fibers including 35 mass% to 88 mass% of Al2O3, 3 mass% to 45 mass% of CaO and 5 mass% to 40 mass% of SiO2, wherein the total content of Al2O3, CaO and SiO2 is 98 mass% or more of the entire fibers.
摘要翻译:提供能够表现出高生物溶解性并且具有优异的耐热性的无机纤维,作为过滤材料,密封材料等的构成材料,同时对人体或生活环境施加最小化的作用,即使纤维具有平均直径 为1μm以下。 包含35质量%至88质量%的Al 2 O 3,3质量%至45质量%的CaO和5质量%至40质量%的SiO 2的无机纤维,其中Al 2 O 3,CaO和SiO 2的总含量为98质量%以上 整个纤维。