Larton L K/20 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.金屬環
一直致力于系統和電纜制造商密切合作，制定一個特殊的聚苯（PPS），光纖技術的要求專門定制的成績。聚苯硫醚8670A61級具有優異的流動特性，使得它作為套管插頭，如精細結構設計組件的理想。此應用程序的其他基本屬性是非常低的吸水性，在高溫下的低蠕變，尺寸穩定性好，甚至在收縮流動性和橫向方向。Vectra液晶聚合物還可用于光纖 - 特別是連接器。這里的關鍵因素是威達的良好的機械性能，甚至在薄壁部分，和*的精度可以與套圈。套圈可以塑造納入到1-2微米的公差孔進行125微米厚的玻璃纖維注射。這些套圈使用級的Vectra A460，專為這類應用而開發的。
Ferrule
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.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.
Heat Exchanger
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. Incorporated in the side section are the inlet and outlet connections for the water-antifreeze mixture. 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. This side section is secured by the edge of the metal heat exchanger, which is crimped around it.產品圖片
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