ASTM D3822 单支纺织品纤维的拉伸性能
纱线中纤维的特性在纱线功能和美学性能中起着重要作用。改变这些纤维可能改进纱线的性能。在纱线的开发和后开发中,进行拉伸试验来评估对各种材料的力学性能,以确定其性质变化。制造过程中也需要做 拉伸试验,作为质量控制措施,以确认材料符合规格, 以减少不必要的废料。
在从事极细纺织品工作时,常常难以确定最合适的试验配置。重要的是选择使你能够容易地装上和卸下试样的夹具。在某些情况下,制作有带子的接头可能使安装试样变得容易。特别是当试样是如此之小,以至难以用肉眼看见的时候,如果使用适合的夹具,试样应当不会在夹具中滑动或出现错误。
单支纤维通常很细,在极低载荷下就会断掉,需要适当的 载荷传感器,能容许试验系统达到需要的最高精度。 在我们实验室进行的一项研究中,一根特殊纤维试样平均在0.3 N破坏,我们推荐用5 N载荷传感器, 因为试验在 5500系列试验系统 上进行,该系统读数精度±0.5%,载荷传感器的能力低至1/250,对于某些纤维,可能需要大一些的载荷传感器。
有多种夹具适合单支纤维。如果试样足够长,我们推荐 线绳夹具, 使用一个绞盘减少试样过早破坏的机会,该夹具还能保持试样精确对中,在前面提到的研究中,对于线绳式夹具,纤维太短,使用了我们的 5 N气动侧压夹具, 重要的是所用夹具的重量不超过1/2载荷传感器的能力,重量超过1/2能力的夹具会减小载荷传感器的工作载荷范围。
在进行任何试验之前,我们建议您复习一下ASTM D3822, 以理解其全部要求。这个方法包含连续和不连续纤维和取自纱线或丝束的细丝。
2714 Series Pneumatic Cord and Yarn Grips (2714-031)
Catalog Number 2714-031 Rated capacity 50 kN (5 kgf, 11 lbf) Suitable for a wide range of linear densities (denier and tex)
- 产品
- 6/11/2013
- 477.3 KB
2714 Series Pneumatic Cord and Yarn Grips (2714-005)
Pneumatic cord and yarn grips provide a convenient method for clamping fiber, cord, yarns and fine wires to reduce the problem associated with testing these materials. A specially designed horn with a smooth finish and a contoured surface with a graduated cam allows for easy loading and a stress reduced clamping area on the specimen. The clamping mechanism can be activated either automatically or through a foot switch. This allows hands-free grip operation enabling the specimen to be held with both hands, for easy loading. Pneumatic cord and yarn grips provide selectable clamping force to accommodate different materials and excellent follow-up action which compensates for decay of the holding force due to specimen creep.
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- 12/13/2012
- 0.8 MB
2714 Series Pneumatic Tire Cord Grips (2714-040)
Pneumatic cord and yarn grips are designed to have interchangeable clamping blocks that accommodate fiber or yarns made from conventional fibers to newly developed high-performance fibers. A specially designed horn with a smooth,highly-polished or controlled surface roughness finish and a contoured surface with a graduated cam allows for easy loading and a stress-reduced clamping area on the specimen. The clamping mechanism can be activated either automatically or through a footswitch to allow hands-free grip operation; this enables the operator to hold the specimen with both hands for easy loading. Pneumatic cord and yarn grips provide selectable clamping force to accommodate different materials and excellent follow up action that compensates for decay of the holding force due to specimen creep.
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- 9/19/2013
- 497.1 KB
Pneumatic Side-Action Grips | 2712-05x Series
The Instron 2712-05x Series Pneumatic Side-Action Grips offers a versatile gripping solution for a wide range of materials. Available in both 50 and 250 N options, the grip’s robust design is ideal for round (wires),fiber (mono-filaments), and flat specimens with or without shoulder.
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- 3/22/2022
- 1.9 MB
Instron 6800 系列万能材料试验系统
Instron 6800 系 列万能材料试验系统,适用于拉伸、压缩、弯曲和其他材料特性试验。
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- 7/7/2020
- 5.1 MB
Instron 3400 系列万能试验系统
面向拉伸、压缩、弯曲和其他材料力学性能测试的 Instron 3400 系列万能试验系统。
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- 7/7/2020
- 4.1 MB
Bluehill Universal 新一代测试软件
Bluehill Universal 基于优化触控操作而开发。全新的纵向布局,专业的视觉设计,直观的工作区视图,配以色彩鲜明的大尺寸触控面板加以呈现。Bluehill Universal 的大尺寸触控点和连贯的操作步骤让用户获得更便捷,更智能的操作体验。易于理解的图标和工作步骤,简单的专业培训,即可让您快速开始试验。
- 产品
- 3/25/2020
- 4.6 MB