摘要:
A curable formaldehyde-free binding composition for use with fiberglass is provided. Such curable composition comprises an aldehyde or ketone and an amine salt of an inorganic acid. The composition when applied to fiberglass is cured to form a water-insoluble binder which exhibits good adhesion to glass. In a preferred embodiment the composition when applied to fiberglass provides a sufficient blackness required in facer products.
摘要:
A mesh suitable for use as a light attenuating screen is disclosed. The mesh may contain not less than two sheets of glass yarn, joined to form a mesh having a specific openness factor and coated with a polymer coating containing TiO2 particles, so that the glass yarn is separated from TiO2 particles by at least a portion of the polymer binder. A method for making a mesh suitable for use as a light attenuating screen is also disclosed.
摘要:
An apparatus for fabricating an optical fiber coated with metal, constructed with a crucible for melting the optical fiber preform to draw an uncoated optical fiber, a diameter measuring device for measuring the diameter of the uncoated optical fiber to regulate it, a metal coater for coating the uncoated optical fiber with metal to prevent penetration of moisture, a temperature controller for controlling the inside temperature of the metal coater, a post-cooler for cooling the metaled optical fiber from a high temperature, a capstan for drawing the optical fiber from the optical fiber preform by applying a rotational force against a portion of the metaled optical fiber, and a spool for winding the metaled optical fiber. The metaled optical fiber includes a core for transmitting light, a cladding on the core having lower refractive index than the core, and a metal coating formed on the cladding for preventing penetration of moisture.
摘要:
A fiber insulation product is provided which includes a fibrous material having a binder dispersed throughout. The binder comprises an inorganic material having thermoplastic properties. Preferably, the binder is a low-melting glass composition or a glass-forming compound such as, for example, boric acid. The insulation product is ideally suited for use in insulation panels having a compressed board encased in a evacuated jacket, high temperature, low smoke, odorless and building insulation applications.
摘要:
There is disclosed an optical component capable of amolifying function by itself and a method of producing thereof. The component includes a light amplifying portion therein and the light amplifying portion includes active elements which serves the light amplification. In the producing method, the amplifying portion is, for example, formed by utilizing sol-gel method to introduce the active elements.
摘要:
There is disclosed a process for preparing novel tacking agents for glass fiber insulation. The tacking agent solution is prepared by adding a condensed phosphate to an aqueous solution of aluminum orthophosphate to provide a homogeneous solution having an Al:P molar ratio of less than 1, preferably 1:3 and wherein the amount of condensed phosphate comprises from about 25 to about 75 percent of the total phosphate in the solution. The tacking agent is applied to glass fiber in the preparation of insulating articles and then heated to convert the tacking agent into a non-hygroscopic, water insoluble, amorphous, condensed aluminum phosphate polymer. The tacking agent resiliently tacks the glass fibers together so as to provide regain of shape after deformation of the fibers as by compression.
摘要:
A doped starting substance is applied to a substrate composed of SiO.sub.2 glass. A phosphor layer is formed by reaction of the starting substance with SiO.sub.2 of the substrate to form a silicate of the starting substance. This reaction is carried out in a heat-treatment process in an oxygen-containing atmosphere. Zn or Gd is preferably used as starting substance.
摘要:
A reactor for applying a carbon coating to an optical waveguide fiber wherein the buildup of reaction by-products within the reactor is reduced by providing internal and external fiber exit ports with the diameter of the internal fiber exit port being greater than the diameter of the external fiber exit port, and gas shielding at the external fiber exit port.
摘要:
A non-compressed heat insulation barrier fabric composite comprising a layer coating of polysiloxane and silicate applied to a textured woven fabric under heat and pressure in a multi-step process to produce a decompressed composite. The fabric composite is produced by coating the woven fabric with the polysiloxane silicate coating and partially curing under heat and pressure to produce a partially cured. composite, whereupon the curing process is interrupted and the partially cured composite is decompressed to loosen the fibers, followed by complete curing of the composite under heat without significant pressure to produce a non-compressed heat insulation barrier fabric composite.
摘要:
An aqueous sol of colloidal particles of tungstic oxide (WO.sub.3)-stannic oxide (SnO.sub.2) composite having a particle size of from 2 to 7 millimicrons is prepared by blending an aqueous solution of tungstic acid and an aqueous solution of an stannate in a weight ratio of from 0.5 to 100 as WO.sub.3 /SnO.sub.2. Where the WO.sub.3 -SnO.sub.2 composite sol in an amount of from 2 to 100 parts by weight as the total of WO.sub.3 and SnO.sub.2 is blended with a sol of a 3- to 5 valent metal oxide having a particle size of from 4 to 50 millimicrons in an amount of 100 parts by weight as the metal oxide, a modified metal oxide sol of colloidal particles having a size of 4.5 to 60 millimicrons as surface-coated with the tungstic oxide (WO.sub.3)-stannic oxide (SnO.sub.5) composite colloidal particles is prepared.