抗撕裂强度
tear strength
塑料替代金属的一个很有前景的领域就是磨擦应用方面，例如齿轮、泵转子、引擎部件、刹车部件、滑动部分等等。在这一领域，塑料具有以下优点：设计的灵活性减轻重量、不使用润滑自润滑性、降低噪声。因为这些迫切的应用需要，就要求材料具有低的动态摩擦和好的耐磨损性，以避免在接触的界面上生热，因此要做到以下几点：避免机械性能的降低、使材料的磨损最小化、避免平滑现象。只有很少的材料自身就具备很好的自润滑性和耐磨损性，因此，材料本身的这些性能通常不能满足工业的要求，因为这个原因，磨擦材料常含有层状填充剂、硅油和一些聚合物这些物质，聚四氟乙烯PTEE就是商品中常使用的一种聚合物。在某些情况下，最终材料的选择也将依赖于工作温度、硬度或耐化学性。
A promising area for plastic substitutes for metals is friction applications, such as gears, pump rotors, engine parts, brake parts, sliding parts, etc. In this field, plastics have the following advantages: flexible design to reduce weight, no use of lubrication self-lubrication, reduce noise. Because of these urgent applications, materials are required to have low dynamic friction and good wear resistance in order to avoid heat generation on the contact interface, so the following points should be done: to avoid mechanical performance degradation, to minimize the wear of materials, to avoid smooth phenomenon. Only a few materials have good self-lubrication and wear resistance, so these properties of the material itself usually can not meet the requirements of industry, because of this reason, abrasive materials often contain layered fillers, silicone oil and some polymers, PTEE is a kind of commonly used commodities. Polymer. In some cases, the choice of final material will also depend on working temperature, hardness or chemical resistance.
耐紫外辐射性能
Ultraviolet radiation resistance
当一个制品持续暴露于紫外光下，或者它被用于户外，这样的材料需要有极好的耐紫外辐射性能。这样的应用如汽车、运输工具、照明设备等等都需要有极好的耐气候性。按照一般的规则解决聚合物的耐紫外辐射性能是不可行的，因为这极大地依赖于材料的化学结构和特殊的老化机理。含有双键的聚合物通常对紫外光更为敏感（如ABS树脂）。在很多情况下，应用于耐紫外辐射的材料含有紫外光稳定剂或者碳黑。
When a product is continuously exposed to ultraviolet light, or when it is used outdoors, such materials require excellent ultraviolet radiation resistance. Such applications, such as automobiles, transport vehicles, lighting equipment and so on, require excellent weather resistance. It is not feasible to solve the ultraviolet radiation resistance of polymers according to general rules, because it depends greatly on the chemical structure of materials and special aging mechanism. Polymers containing double bonds are usually more sensitive to UV light, such as ABS resin. In many cases, UV resistant materials contain UV stabilizer or carbon black.
耐伽玛射线性能
Negama ray properties
在一些专用的场合里，材料要经常暴露在伽玛射线下，这特别是在一些医疗应用上，经常需要进行定期的杀菌消毒。通常，含有双键或者大量脂肪族单元的材料不具备好的耐伽玛射线的能力。
In some special occasions, materials are often exposed to gamma rays, especially in some medical applications, the need for regular sterilization. Usually, materials containing double bonds or large number of aliphatic units do not possess good Negama ray capability.
例如一些对伽玛射线耐受力很差的材料，如：ABS树脂, 聚甲醛POM, 聚丙烯PP。
For example, some materials with poor tolerance to gamma rays, such as ABS resin, POM POM, polypropylene PP.