摘要:
A non-woven sheet contains sheath/core polymer fibers with the polymer in the sheath having a melting point at least 15 degrees centigrade higher than the melting point of the polymer of the core. Preferably, the polymer of the sheath is polyphenylenesulfide and the polymer of the core is polyethyleneterephthlate. The nonwoven sheet can be used with a film to make a composite laminate suitable for use in electrical insulation.
摘要:
This invention relates to a multicomponent fiber having an exposed outer surface, comprising at least a first component of polyarylene sulfide polymer, and at least a second component of a thermoplastic polymer free of polyarylene sulfide polymer, wherein said thermoplastic polymer forms the entire exposed surface of the multicomponent fiber.
摘要:
This invention relates to a multicomponent fiber having an exposed outer surface, comprising at least a first component of polyarylene sulfide polymer, and at least a second component of a thermoplastic polymer free of polyarylene sulfide polymer, wherein said thermoplastic polymer forms the entire exposed surface of the multicomponent fiber.
摘要:
The invention concerns a multilayer glove comprising an outer layer consisting essentially of aramid fibers, an inner layer consisting essentially of a thermoset material, and a hand contact layer comprising animal or plant fiber, wherein the inside palm of the glove remains below about 49 C (120 F), at least 15 seconds after the glove is immersed in water at room temperature for 2 min, removed from the water, hung in a vertical position for 5 min, and heated at a temperature of about 280 C (536 F).
摘要:
This invention relates to a fire blocking structure containing in order a first fire barrier, a first heat absorber, a second fire barrier and optionally a second heat absorber.
摘要:
This invention relates to a laminate electrical insulation part for an electrical device comprising a thermoplastic film positioned between, adjacent to, and attached to two nonwoven sheets. Each of the nonwoven sheets consists of multicomponent polymeric fibers comprising at least a first polymer and a second polymer, the first polymer having a melting point that is at least 15 degrees Celsius lower than both the melting point of the second polymer and the melting point of the thermoplastic film, and the film is attached to the nonwoven sheets by the first polymer in the nonwoven sheets. The electrical insulation part has a breakdown voltage of at least 3 kilovolts, and a surface having a dynamic frictional coefficient of 0.25 or less. This invention also relates to an electrical device component comprising the laminate electrical insulation part.
摘要:
The invention concerns a multilayer glove comprising an outer layer consisting essentially of aramid fibers, an inner layer consisting essentially of a thermoset material, and a hand contact layer comprising animal or plant fiber, wherein the inside palm of the glove remains below about 49 C. (120 F.), at least 15 seconds after the glove is immersed in water at room temperature for 2 minutes, removed from the water, hung in a vertical position for 5 minutes, and heated at a temperature of about 280 C. (536 F.).
摘要:
This invention relates to a laminate electrical insulation part for an electrical device comprising a thermoplastic film positioned between, adjacent to, and attached to two nonwoven sheets. Each of the nonwoven sheets consists of multicomponent polymeric fibers comprising at least a first polymer and a second polymer, the first polymer having a melting point that is at least 15 degrees Celsius lower than both the melting point of the second polymer and the melting point of the thermoplastic film, and the film is attached to the nonwoven sheets by the first polymer in the nonwoven sheets. The electrical insulation part has a breakdown voltage of at least 3 kilovolts, and a surface having a dynamic frictional coefficient of 0.25 or less. This invention also relates to an electrical device component comprising the laminate electrical insulation part.