摘要:
The present invention relates to a filter material including a sheet-like laminate which includes an ultrafine fiber aggregate layer formed of an aggregate of ultrafine fibers produced by an electrospinning method having an average fiber diameter of not less than 10 nm and not more than 1000 nm, and a base material formed of a nonwoven fabric or a woven fabric constituted from fibers having an average fiber diameter of 1 μm or more, said filter material satisfying all of a plurality of specific requirements, having a capability of collecting or separating μm-order microfine particles with a high accuracy and exhibiting a less pressure loss and a long filtering life, as well as a filter cartridge using the filter material.
摘要:
The present invention relates to a filter material including a sheet-like laminate which includes an ultrafine fiber aggregate layer formed of an aggregate of ultrafine fibers produced by an electrospinning method having an average fiber diameter of not less than 10 nm and not more than 1000 nm, and a base material formed of a nonwoven fabric or a woven fabric constituted from fibers having an average fiber diameter of 1 μm or more, said filter material satisfying all of a plurality of specific requirements, having a capability of collecting or separating μm-order microfine particles with a high accuracy and exhibiting a less pressure loss and a long filtering life, as well as a filter cartridge using the filter material.
摘要:
Provided are a laminate excellent in heat resistance, and a separator for capacitors comprising the laminate.The laminate comprises a nanofiber layer and a base layer, the nanofiber layer comprising polyamide filaments formed from a polyamide (a) and having an average fiber diameter of 10 to 1000 nm, and the base layer comprising fibers at least including polyamide fibers formed from a polyamide (a). The polyamide (a) comprises a dicarboxylic acid unit and a diamine unit, wherein (i) the dicarboxylic acid unit comprising terephthalic acid unit in the proportion of not lower than 60% by mole, and (ii) the diamine unit comprising at least one diamine unit selected from the group consisting of 1,9-nonanediamine unit and 2-methyl-1,8-octanediamine unit in the proportion of not lower than 60% by mole in total.
摘要:
Laminates including a nanofiber layer and a base layer, the nanofiber layer comprising polyamide filaments formed from a polyamide (a) and having an average fiber diameter of 10 to 1000 nm, and the base layer comprising fibers at least including polyamide fibers formed from a polyamide (a), where the polyamide (a) comprises a dicarboxylic acid unit and a diamine unit and where (i) the dicarboxylic acid unit comprising a terephthalic acid unit in the proportion of not lower than 60% by mole, and (ii) the diamine unit comprising at least one diamine unit selected from the group consisting of 1,9-nonanediamine unit and 2-methyl-1,8-octanediamine unit in the proportion of not lower than 60% by mole in total are provided, as well as separators for capacitors including the laminates.
摘要:
Cross-linked polyvinyl alcohol fibers prepared from a water-soluble polyvinyl alcohol, which satisfy the following requirements: (1) a water absorption in water at 30° C. ranging from 10 to 100 times the weight of the fibers; (2) a fiber diameter in water at 30° C. as a result of absorbing water ranging from 2 to 10 times the diameter of the fibers not having absorbed water; and (3) a melting point ranging from 160 to 220° C., and a heat of fusion ranging from 40 to 100 J/g.
摘要:
Provided is a separator for alkaline batteries which can not only prevent batteries from internal short circuit by inhibiting the dendrite formation at anode, but also enables to have a low electrical resistance. The separator for alkaline batteries comprises a composite sheet in which a base layer comprising a wet-type nonwoven material formed from alkaline resistant fibers is covered with a nanofiber layer comprising a modified polyvinyl alcohol fiber which has a fiber diameter of 10 to 1000 nm and a liquid absorption amount by fibers of 4.0 to 40.0 g/g after immersion in a 35% aqueous solution of KOH.
摘要:
Provided is a separator for alkaline batteries which can not only prevent batteries from internal short circuit by inhibiting the dendrite formation at anode, but also enables to have a low electrical resistance. The separator for alkaline batteries comprises a composite sheet in which a base layer comprising a wet-type nonwoven material formed from alkaline resistant fibers is covered with a nanofiber layer comprising a modified polyvinyl alcohol fiber which has a fiber diameter of 10 to 1000 nm and a liquid absorption amount by fibers of 4.0 to 40.0 g/g after immersion in a 35% aqueous solution of KOH.
摘要:
A vinyl-alcohol-based polymer and vinyl-halide-based polymer are dissolved in a common organic solvent for them, a typical example of which is dimethylsulfoxide, to obtain a dope wherein a solution of the vinyl-halide-based polymer having a particle size of 1-50 .mu.m is present in the solution of the vinyl-alcohol-based polymer. This dope is spun into a low temperature solidifying bath comprising a solidifying solvent such as methanol, and the organic solvent. The resultant is subjected to extraction, drying, dry heat drawing, and optional heat shrinking or acetalization to obtain fiber. In the fiber thus obtained, the vinyl-alcohol-based polymer makes sea phases, and the vinyl-halide-based polymer makes island phases whose size is 0.1-3 .mu.m. The crystallinity degree of the vinyl-alcohol-based polymer is 65-85%.The polyvinyl-alcohol-based flame retardant fiber is useful for clothes, industrial materials, living materials and the like. It can be produced at low costs, and has excellent spinning stability and dimensional stability in hot water.
摘要:
To provide a laminated fabric having an air permeability and a filtering capability, the laminated fabric includes a supporting layer and a protective layer bonded together. The protective layer includes a stretchable nonwoven fabric comprises an ultra-fine fiber. This laminated fabric has an air permeability of 2 cc/cm2/sec. or higher and a 1 μm quartz dust collecting efficiency of 90% or higher. The laminated fabric may also have a water resistant layer which is positioned on the protective layer so that the protective layer is employed as an intermediate layer between the water resistant layer and the supporting layer.
摘要翻译:为了提供具有透气性和过滤能力的层压织物,层压织物包括粘合在一起的支撑层和保护层。 保护层包括包含超细纤维的可拉伸无纺布。 该层压织物的透气度为2cc / cm 2 / sec。 以上,1mum石英粉尘收集效率为90%以上。 叠层织物也可以具有位于保护层上的防水层,使得保护层用作防水层与支撑层之间的中间层。
摘要:
Provided is a laminated article excellent in impact resistance, and capable of suppressing scattering of a material even when subjected to an impact. The laminated article comprises a layer of a hard composite material comprising at least a hard reinforcing fiber and a thermosetting polymer used as matrix thereof; and a layer of a soft composite material comprising at least a soft reinforcing fiber and a polymer used as matrix thereof, the soft composite layer being laminated to the hard composite layer so as to be unified with each other. The soft reinforcing fiber comprises at least a thermotropic LCP fiber, and the soft composite material comprises a fabric made of the soft reinforcing fiber. The thermotropic LCP fiber may be a multifilament yarn having a single fiber fineness of about 1 to 15 dtex and a total fineness of about 100 to 3,000 dtex.