摘要:
The addition of fibrillated acrylic fiber to non-asbestos type friction material compositions provides marked improvement in the flexural strength, stiffness and structural integrity of preforms used in the manufacture of friction elements. The consequent handling characteristics of the preform provide improvement in the manufacturing of the friction element.
摘要:
A glass fiber-based paper diffusion medium, as well as a membrane humidifier for a fuel cell and method for humidifying a fuel cell using the provided glass fiber-based paper diffusion medium. The diffusion medium is a flexible, resin-bonded glass fiber paper impregnated with 26-55% cured liquid phenolic resin and having a thickness of 100-110 μm and a Gurley permeability of at least 100 cfm.
摘要:
A fuel cell comprises a cathode gas diffusion layer, a cathode catalyst layer, an anode gas diffusion layer, an anode catalyst layer and an electrolyte. The diffusion resistance of the anode gas diffusion layer when operated with anode fuel is higher than the diffusion resistance of the cathode gas diffusion layer. The anode gas diffusion layer may comprise filler particles having in-plane platelet geometries and be made of lower cost materials and manufacturing processes than currently available commercial carbon fiber substrates. The diffusion resistance difference between the anode gas diffusion layer and the cathode gas diffusion layer may allow for passive water balance control.
摘要:
A dispensing cap system for dispensing a supplement material through a bottle neck opening and into the bottle. An exemplary embodiment includes a cap configured for connection to beverage bottle necks of different sizes. A seal member is arranged to provide a liquid seal against the neck opening. A valve member passes through a storage member attached to the cap, and is configured for movement between a storage position and a dispensing position, in which passage is permitted of the supplement material from the storage member into the bottle. A nipple member may be positioned over the valve member to allow the bottle contents to be utilized or consumed.
摘要:
A method, system and tools for introducing a fiber optic conduit into a pressurized gas pipeline includes the step of introducing a translating member into the pressurized gas pipeline via an entry port in a first fitting attached to the pressurized gas pipeline. Tools are deployed within a first pressure lock housing attached to the first fitting by using a first manipulator located in the first air lock housing. The translating member, such as a duct rod, is advanced within the pressurized gas pipeline by a driving mechanism until a second drilling fitting is reached. The translating member is attached to a fiber optic conduit or cable. The duct rod and fiber optic conduit are then pulled back through the pressurized gas pipeline. Extractor tools extending through seals in the pressure lock housing engage with and withdraw the duct rod. Alternatively, first and second duct rods may be pushed towards each other from the first and second fittings. End elements on the duct rods engage each other. The first duct rod is then pulled back, pulling the second duct rod with it. This technique can double the installation length available by pushing duct rod through the pipeline.
摘要:
Crimped acrylic fibers with a small diameter, a minimum aspect ratio in the 20-50 range, and having a crimp of greater than about 10% so as to enhance the viscosity of polymers, resistance to gravity-induced slumping when applied to vertical surfaces, and mix stability, as well as provide matrix reinforcement and toughness, are adapted to act as improved physical thixotropes in adhesives, sealants, coatings, paints, grouts, building materials and the like.
摘要:
A water-resistant composite paper, suitable for use as a loudspeaker component, is made from a composition including wood pulp, hydrophobic fibers, and stiffening fibers that retain stiffness when wet. In some examples, fibrillated acrylic fibers and glass fibers are used.
摘要:
Pipeline stopping tools for use in temporarily stopping flow in a pipeline have features for centering a conduit or cable within the pipeline. The conduit or cable is guided into a recess, to avoid damage as the pipeline is squeezed closed. Alternative pipeline stopping stools have features for sealing against both the inside walls of the pipeline and against the cable. In a first tool, a linkage on a handle drives seal lips on a seal ring to engage around and seal against the cable in the pipeline, while the outer edges of the seal ring seal against the inside walls of the pipeline. The linkage includes jaws which force the seal lips against the cable. In a second tool, a resilient seal is attached over a center plate and side plates pivotably attached to the center plate. A linkage drives the center plates from an open to a closed position. A cable recess in the seal ring seals against the cable while the outside edges of the seal ring seal against the pipeline. A third tool has a resilient plug and lips positioned around a cable recess. As the plug is forced into the pipeline, the lips seal around the cable, and the plug sidewalls bulge outwardly to seal against the pipeline.
摘要:
An apparatus for sensing moisture in a diaper comprises a portable alarm unit, a pouch-like diaper insert made from waterproof dental bib material with an opening at one end and a moisture sensing strip made of highly efficient liquid absorption and transfer capillary wick material. The wick strip has a substantially short front non-conductive portion protruding out of the diaper insert for placement in a diaper crotch area and a substantially long back portion having a pair of screen-printed spaced apart conductive ink bands which couple electrically at one end to the alarm unit. The conductive ink bands include a terminal tortuous conductive ink pattern screen-printed in close proximity to the substantially short first wick portion to increase moisture contact surface area, minimize moisture transfer distance and significantly reduce the alarm unit response time.
摘要:
Improved asbestos-free fiber reinforced material for use in the manufacture of gaskets, and the like, comprises (a) an elastomeric binder material and (b) a blend of fibrillated, organic, synthetic polymer, organic synthetic polymer staple and organic synthetic, soluble polymer particles so as to enhance the strength of the gaskets, shock mountings, timing belts, sealants, and the like, made from such materials.