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                  Stability of polyether ether ketone (PEEK)
                  Release time:2021-12-01 16:47:35      Hit count:72

                  Stability: Superior dimensional stability, which is important in some applications. The changes of temperature, humidity and other environmental conditions have little influence on the size of PEEK parts, which can meet the requirements of high dimensional accuracy.


                  (1) The shrinkage rate of PEEK plastic material injection molding is small, which is very beneficial to control the dimensional tolerance range of PEEK plastic parts, so that the dimensional accuracy of PEEK parts is much higher than that of general plastics;


                  (2) The thermal expansion coefficient is small, and the size of PEEK parts changes little with the change of temperature (which can be caused by the change of ambient temperature or the friction heat generated during operation);


                  (3) good dimensional stability, the dimensional stability of plastics refers to the dimensional stability of engineering plastic products in the use or storage process, this size change is mainly because of the activation energy of polymer molecules, so that the chain segment has a certain degree of crimping;


                  (4) PEEK has outstanding thermal hydrolysis characteristics, and has very low water absorption under high temperature and high humidity. It will not change the size of general plastics like nylon due to water absorption.


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