PA6【Polyamide 6】
PROPERTIES:PA 6 Cast is a high-molecular polyamide from which even large elements can be produced economically.
good wear resistance and sliding properties.
due to its purely chemical and pressure-less polymerisation in heated moulds, semi-finished products can be manufactured, which would not be possible or economical with extrusion processing or injection moulding.
water absorption and resulting change in volume can be catered for by increasing housing tolerances.
APPLICATION:
used for bearing elements and support rings for example
POM【Polyoxymethylene】
PROPERTIES:POM is a thermoplastic material
Components made of POM have excellent wear and sliding characteristics, particularly in the dry-running range of the bearing elements
The material is tough and maintains good stability of shape at different temperatures
High resistance to various fluids with low water absorption due to its chemical structure
APPLICATION:
often used as base material for bearing elements and support rings
PTFE【Polytetrafluoroethylene】
PROPERTIES :PTFE is a fluoroplastic with excellent chemical, thermal, electrical and tribological properties and behaves partly as a thermoplastic.
highly viscous in the melt and can be processed by injection moulding using specific press and sinter technologies. PTFE derivates like PFA and FEP, however, can be processed by injection moulding.
PTFE and PFA fluoroplastics have the highest resistance to chemicals of all plastics due to the strong carbon-fluorine bond in the molecular chain.
low coefficient of friction under both static and dynamic conditions ® prevents stick-slip behaviour
extremely low absorption of water and general resistance to almost all fluids
temperature range: its ability to resist extreme temperatures in the high and low temperature range is superior tomost other plastics.
APPLICATION:
Reinforced compounds are used mainly in order to increase the load factor of PTFE-pure. They have a considerably better behaviour against wear and pressure load with low coefficient of friction.
TPE-U【Polyurethane Elastomers】
PROPERTIES:Polyurethane elastomers have the characteristic elastic qualities of rubber within certain temperature limits.
wide-ranging possibilities in the moulding process due to various types of polyurethane compounds.
Swelling characteristics in water, fats, oils and solvents can be greatly influenced by the structure and number of so-called soft segments.
distinctive for their higher wear resistance compared to other elastomer materials.
good low temperature behaviour (special polyurethane) .
resistance to hydrolysis and ageing.
APPLICATION:
suitable for the manufacture of high-quality sealing elements.
for almost all mineral based hydraulic fluids.
感谢楼主
感谢楼主，不过有没有中文呢？谢谢！ 原帖由 abelliu 于 2008-11-12 16:22 发表 http://bbs.myptfe.com/images/common/back.gif感谢楼主，不过有没有中文呢？谢谢！
抱歉，没有中文的，只有英文的，你可以使用google在线翻译工具翻译http://translate.google.cn
啊！
谢谢，学习英语了！！
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