ISO 3341:2000 纺织玻璃纤维.纱线.断裂力和断裂伸长的测定

标准编号：ISO 3341:2000

中文名称：纺织玻璃纤维.纱线.断裂力和断裂伸长的测定

英文名称：Textile glass — Yarns — Determination of breaking force and breaking elongation

发布日期：2000-05

标准范围

1.1本国际标准规定了拉伸断裂力和伸长率的测定方法在从包装中取出的玻璃纱线断裂时。1.2该方法适用于各种类型的玻璃纱线（单纱、折叠纱、缆纱、股纱、无捻结构、粗纱等）。它主要用于直径小于2mm的单根、折叠和缆线玻璃纱线，或取自包装的线密度低于2000tex。也可以测试较重的纱线条件是所有相关方都可以接受的。1.3本方法不适用于与标准大气压平衡且在5mN/tex的预张力，伸长超过0.5%。这种纱线可以使用较低的预张力（用于实施例2，5Mn/tex或1Mn/tex)，所有相关方都可以接受。这主要发生在处理订书钉时-纤维纱线。注1:虽然可以对经束纱线或从织物中取出的纱线进行测定，但必须考虑结果仅供参考。注2本试验方法主要用于材料表征和质量控制。纤维间磨损和其他张力不够均匀（接触网）等因素会增加变异性，产生低测试值。这将因此阻碍纱线性能和最终用途应用之间的准确相关性。应格外小心在考虑该方法用于规范目的时。注3:尽管本国际标准提供了测定断裂伸长率的可能性，但这种做法并不不过推荐。实际上，只有使用引伸计才能获得伸长率的正确评估；不会的通过测量移动夹具穿过的距离而获得。另一方面，经验表明，使用引伸计非常脆弱，经常会对标本造成损坏。

1.1 This International Standard specifies a method for the determination of the tensile breaking force and elongationat break of glass yarns taken from packages.1.2 The method is applicable to various types of glass yarn (single, folded, cabled, strands, structures without twist,rovings, etc.). It is basically intended for single, folded and cabled glass yarns having a diameter of less than 2mm,or a linear density lower than 2000 tex, taken from packages. Heavier yarns may be also tested providing the testconditions are acceptable to all interested parties.1.3 The method is not applicable to glass yarns which, in equilibrium with the standard atmosphere and under apre-tension of 5 mN/tex, are elongated by more than 0,5%. Such yarns can be tested using a lower pre-tension (forexample 2,5 mN/tex or 1 mN/tex ), acceptable to all interested parties. This would occur mainly when dealing with staple-fibre yarns.NOTE 1 Though the determination may be run on beamed yarn or on yarns taken from fabrics, the results must be consideredas indicative only.NOTE 2 This test method is primarily intended for material characterization and quality control. Fibre-to-fibre abrasion and otherfactors such as insufficiently uniform tension (catenary) will increase variability and generate low test values. This will consequentlyimpede accurate correlation between performance of the yarns and end use applications. Extreme care should be takenin considering this method for specification purposes.NOTE 3 Though this International Standard provides the possibility of determining the elongation at break, this practice is notrecommended, however. Indeed, a correct assessment of the elongation will only be obtained using an extensometer; it will not beobtained by measuring the distance traversed by the moving clamp. On the other hand, experience shows that the use of an extensometeris quite delicate and often causes damage to the specimen.

标准预览图