Abstract:
Method and apparatus for producing metal-coated optical fiber involves providing a length of optical fiber having a glass fiber with or without a carbon layer surrounded by a liquid-soluble polymeric coating. The optical fiber is passed through a series of solution baths such that the fiber will contact the solution in each bath for a predetermined dwell time, the series of solution baths effecting removal of the polymer coating and subsequent electroless plating of metal on the glass fiber. The optical fiber is collected after metal plating so that a selected quantity of the metal-coated optical fiber is gathered, Preferably, the glass fiber passes through the series of solution baths without contacting anything except for the respective solution in each.
Abstract:
A fiberglass material contains glass fibers having graphite evenly distributed thereon. The graphite provides a coating that makes the fiberglass material substantially free of static electricity. Suitable graphite content of the fiberglass material is about 0.25 wt % to about 0.50 wt %, or about 0.25 wt % to about 1.0 wt %, or about 0.8 wt % of dry weight of the glass fibers. The graphite used may be synthetic material or natural material substantially free of silica. Other components of the fiberglass material may include de-dusting oil.
Abstract:
A fiber is provided, including a cladding material that is disposed along a longitudinal-axis fiber length. A plurality of spherical particles are disposed as a sequence along a longitudinal line parallel to the longitudinal fiber axis in at least a portion of the fiber length, and include a spherical particle material that is interior to the fiber cladding material and different than the fiber cladding material. To produce particles, a drawn fiber, having a longitudinal-axis fiber length and including at least one fiber core that has a longitudinal core axis parallel to the longitudinal fiber axis and that is internally disposed to at least one outer fiber cladding layer along the fiber length, is heated for a time that is sufficient to cause a fiber core to break-up into droplets sequentially disposed along the fiber core axis. Fiber cooling solidifies droplets into spherical particles interior to fiber cladding.
Abstract:
Fiberglass products with increased flame resistance are described. The products may include fiberglass-containing thermal insulation that include a plurality of glass fibers that are at least partially coated with a vermiculite-containing flame retardant. The products may further include fiberglass composites that are about 50 wt. % to about 98 wt. % glass fibers, about 2 wt. % to about 50 wt. % of a binder; and a flame retardant that includes vermiculite. Also described are methods of making fiberglass products with increased flame resistance. These methods may include the steps of contacting glass fibers and/or fiberglass composite with a flame retardant mixture that includes vermiculite.
Abstract:
Method and apparatus for producing metal-coated optical fiber involves providing a length of optical fiber having a glass fiber with or without a carbon layer surrounded by a liquid-soluble polymeric coating. The optical fiber is passed through a series of solution baths such that the fiber will contact the solution in each bath for a predetermined dwell time, the series of solution baths effecting removal of the polymer coating and subsequent electroless plating of metal on the glass fiber. The optical fiber is collected after metal plating so that a selected quantity of the metal-coated optical fiber is gathered, Preferably, the glass fiber passes through the series of solution baths without contacting anything except for the respective solution in each.
Abstract:
The present invention relates to a glass strand provided with a coating based on a polymer chosen from vinyl acetate/vinyl chloride copolymers, polyvinyl chloride and polyvinylidene chloride and which comprises a silane of formula Si(R1)(R2)(R3)(R4) in which:R1, R2 and R3, which are identical or different, represent a C1-C6 alkyl group, a C2-C6 alkenyl group, a C2-C6 alkynyl group, a C6-C10 aryl group, a hydroxyl group, a C1-C6 alkoxy group, a C6-C10 aryloxy group, a C1-C6 acyloxy group or a C2-C7 alkylcarbonyl group,at least two of the R1, R2 and R3 groups representing a hydroxyl group or an alkoxy group, andR4 represents a group including at least one epoxy functional group, an optionally substituted aryl group, a halogen atom or a group carrying at least one halogen atom, in particular a fluorine atom, a group including at least one aldehyde functional group, a group carrying at least one functional group including a sulfur or phosphorus atom, or an acryloyloxy or methacryloyloxy group,said group carrying the abovementioned functional groups being a C1-C18, preferably C1-C8, carbon-based group which can comprise at least one oxygen or sulfur heteroatom.Another subject matter of the present invention is a screen formed from the glass strand carrying said coating, in particular in the form of a grid, woven fabric or knitted fabric which can be used as a mosquito net.
Abstract:
There is provided a feedback-controlled self-heat-monitoring fiber, including an insulator having a fiber length with at least one metal-semiconductor-metal thermal sensing element along the fiber length and disposed at a position in a cross section of the fiber for sensing changes in fiber temperature. An electronic circuit is connected to the thermal sensing element for indicating changes in fiber temperature. A controller is connected for controlling optical transmission through an optical transmission element, that is disposed along the fiber length, in response to indications of changes in fiber temperature.
Abstract:
The invention relates to glass strands coated with a sizing composition which comprises, as film-forming adhesion agents, at least one polyester, at least one polyvinyl acetate and at least one polyurethane. The glass strands obtained are used as reinforcements in the manufacture of molded components comprising a thermostatic matrix by the open mold molding technique, in particular by simultaneous spraying of said strands and of resin, and of pipes by the centrifuging technique.
Abstract:
A process is provided for a heat-resistant product that has a support chosen from a glass fiber and an assembly of glass fibers, and a coating extending over the outer surface of said support, in a zone called the “protected zone.” The coating has particles having a mean size of less than 100 nm and has more than 95% by mass of Al2O3 and/or ZrO2, referred to as “protective particles.” The protective particles cover more than 50% and less than 90%of the protected zone, as percentage by surface area. The process includes the step of subjecting the heat-resistant product to a temperature of greater than 600° C. for a duration of greater than 0.5 hours.
Abstract:
A fiberglass material contains glass fibers having graphite evenly distributed thereon. The graphite provides a coating that makes the fiberglass material substantially free of static electricity. Suitable graphite content of the fiberglass material is about 0.25 wt % to about 0.50 wt %, or about 0.25 wt % to about 1.0 wt %, or about 0.8 wt % of dry weight of the glass fibers. The graphite used may be synthetic material or natural material substantially free of silica. Other components of the fiberglass material may include de-dusting oil.