![]() It is roughly 10 times the price of PTFE and as a result has remained a niche polymer, used only in applications where it is absolutely necessary. The biggest disadvantage of PEEK remains the price. This makes it a preferred choice in high wear applications. PEEK is over 30 times the cost of stainless steel. hard materials such as acetal, nylon, and PEEK where creep is less of a factor in. In a nutshell, applications requiring strength and low levels of deformation would usually employ PEEK, whereas those requiring resistance to voltage or chemicals utilize PTFE. PTFE also rates highly in that it is self-lubricating. The creep rate determined for PEEK-OPTIMA was approximately two orders of magnitude lower than that previously measured for medical grade polyethylene, whereas the total deformation of PEEK-OPTIMA was slightly increased in a 37C, aqueous environment when compared to that measured at room temperature in a dry environment. OEMs typically have to make a choice based on technical suitability and hence need to be better informed as to how these materials match up against each other.īelow is a short comparison on properties between these two polymers and can be used a guide to aid new product development. Herein, we present the experimental measures of brittle creep failure, critical behavior, and the dependence of time-to-failure, on the secondary creep rate of concrete under sustained uniaxial compression. We also have electrically conductive, metal. Although both PTFE and PEEK are well established within their respective fields, there are frequently questions around which would better suit a given application. Understanding the time-dependent brittle deformation behavior of concrete as a main building material is fundamental for the lifetime prediction and engineering design. PEEK offers flexural modulus at very high temperatures and can be improved with glass or carbon. Our TECA PEEK range reinforced grades such as: glass, ceramic, carbon fiber, mineral, bearing or wear additives.
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