摘要:
A shock-absorbing air bag for an automobile or aircraft, has a high heat and flame resistance and satisfactory mechanical strength and comprises a high density woven fabric composed of warps and wefts each comprising (a) 0 to 90% by weight of thermoplastic synthetic fibers, for example, polyester fibers, having a denier of 5 or less and a Young's modulus of 1300 kg/mm 2 or less, and (b) 10 to 100% by weight of heat resistant organic fibers, for example, aramid fibers, having a denier of 2 or less and a thermal decomposition temperature of 300 °C or more, the woven fabric preferably having a high cover factor of 1900 or more.
摘要翻译:一种用于汽车或飞机的减震气囊,具有高的耐热和阻燃性和令人满意的机械强度,并且包括由经纱和纬纱组成的高密度织物织物,每个织物包含(a)0至90重量%的热塑性合成纤维 例如,旦尼尔为5以下,杨氏模量为1300kg / mm 2以下的聚酯纤维,(b)10〜100重量%的耐热有机纤维,例如芳族聚酰胺纤维 ,旦尼尔为2以下,热分解温度为300℃以上,优选覆盖系数为1900以上。
摘要:
A non-coated and uncalendered polyester filament woven fabric useful for an air bag, having a low air permeability even after a dry or wet heat aging, includes a plurality of polyester multifilament warp and weft yarns having (1) a maximum thermal stress of 0.8 g/denier or less determined between room temperature and the melting point of the yarns, at a heating rate of 150 °C/min and at a fixed length of the yarn under an initial load of 0.08 g/denier, (2) a maximum thermal shrinkage of 25% or less determined between room temperature and the melting temperature of the yarn at a heating rate of 150 °C/min under an initial load of 0.08 g/denier without restricting the shrinkage of the yarns, (3) a limiting viscosity number of 0.80 to 0.95 dℓ/g determined in a concentration of 1.2 g/100 mℓ in o-chlorophenol at 25°C, and (4) a content of terminal carboxyl groups of 5 to 35 equivalent per ton.
摘要:
A base material for a honeycomb core structure comprises a paper-like polyester fiber sheet comprising 20% to 80% by weight of drawn polyester staple fibers which preferably have a flat cross-sectional profile having a flatness, which refers to a ratio in length of a major axis to a minor axis of the profile, of from 2.5 to 30.0, 20% to 80% by weight of the sum of undrawn polyester staple fibers and other polyester staple fibers having a lower melting point than that of the undrawn polyester fibers, and having a porosity of 60% or less and a resistance to permeation of air of 100 sec/100 ml or more.
摘要:
A wet non-woven fabric having excellent drape characteristics, which is formed from a mixture of (A) a polyester short fiber in which a shrinkage factor in the direction of the fiber axis at a temperature not lower than 90°C is negative and (B) a short fiber showing a fusion-bondability at a temperature lower by at least 50°C than a temperature at which the short fiber (A) has a fusion bondability or (C) a polyester short fiber having a birefringence of 0.006 to 0.03, according to a wet paper-forming method.
摘要:
A wet-degradable fiber having a covering resin layer is described. The moisture permeability (R) of a resin forming the covering layer is at least 2.5 g/m 2 ·24 hours as determined at a relative humidity difference of 0% and 90% with respect to a thickness of 0.1 mm. The strength wet reduction ratio (AS) of the fiber is within a range satisfying requirements represented by the following formulae: and wherein ΔS 1 represents the strength reduction ratio after two hours' immersion in water at 20°C and AS 2 represents the strength reduction ratio after fifty hours' immersion in water at 20°C.
摘要:
A paper-like polyester fiber sheet having enhanced mechanical strength, opaqueness, and resistance to permeation of liquids, gases, and bacteria and a soft touch, including polyester short fibers each having a thickness of 0.1 to 15 denier and a length of 3 to 25 mm and provided with a flat cross-sectional profile having a degree of flatness (a ratio in length of a major axis to a minor axis of the profile) of 2.5 or more. The polyester short fibers preferably exhibited an irreversible spontaneous elongation in hot water at 90°C.
摘要:
A wet-degradable fiber having a covering resin layer is described. The moisture permeability (R) of a resin forming the covering layer is at least 2.5 g/m 2 ·24 hours as determined at a relative humidity difference of 0% and 90% with respect to a thickness of 0.1 mm. The strength wet reduction ratio (AS) of the fiber is within a range satisfying requirements represented by the following formulae: and wherein ΔS 1 represents the strength reduction ratio after two hours' immersion in water at 20°C and AS 2 represents the strength reduction ratio after fifty hours' immersion in water at 20°C.