Hyvex 13002 BK C PPS
The stack is held together through bolting from the end plates to hold the bipolar plates in the stack together and compress the gaskets between them. Intervening insulating plates have bored manifold to feed hydrogen fuel, oxidizing air and cooling water to the stack, as well as to remove the water produced during cell operation. A PEM fuel cell assembly contains a stack of about 200 series-connected cells.金属环
一直致力于系统和电缆制造商密切合作，制定一个特殊的聚苯（PPS），光纤技术的要求专门定制的成绩。聚苯硫醚8670A61级具有优异的流动特性，使得它作为套管插头，如精细结构设计组件的理想。此应用程序的其他基本属性是非常低的吸水性，在高温下的低蠕变，尺寸稳定性好，甚至在收缩流动性和横向方向。Vectra液晶聚合物还可用于光纤 - 特别是连接器。这里的关键因素是威达的良好的机械性能，甚至在薄壁部分，和*的精度可以与套圈。套圈可以塑造纳入到1-2微米的公差孔进行125微米厚的玻璃纤维注射。这些套圈使用级的Vectra A460，专为这类应用而开发的。
Ferrule
These ferrules use Vectra grade A460, specially developed for such applications.has been working closely with systems and cable manufacturers to develop a number of special （PPS） grades tailored specifically to the requirements of fibre optic technology. The 8670A61 grade has outstanding flow properties, making it ideal for fine-structured design components such as plug connectors, known as ferrules. Other essential properties for this application are very low water absorption, low creep at high temperatures, good dimensional stability and even shrinkage in both flow and transverse directions. Vectra liquid crystal polymer is also used in fibre optics – particularly for connectors. The crucial factors here are Vectra’s good mechanical properties, even in thin wall sections, and the extreme precision with which ferrules can be made. Ferrules can be injection moulded to incorporate holes to carry the 125 μm thick glass fibres to tolerances of 1-2 μm.
Heat Exchanger
The service temperature extends up to 140°C. Only PPS has the necessary resistance to chemicals. This was determined by tests in a water-antifreeze mixture at 150°C over 1000 hours. PPS was the only material to display the strength previously specified. Its excellent mechanical properties, such as high strength values, moduli and low tendency to creep, meet the designers exacting requirements. PPS high dimensional stability makes it possible to meet the fine tolerances this application requires.Drawing their heat supply from circulating water, the fresh air heating units in cars often incorporate a side section made from PPS. This side section is secured by the edge of the metal heat exchanger, which is crimped around it. Incorporated in the side section are the inlet and outlet connections for the water-antifreeze mixture.产品图片
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