Description
Springer Polymer Properties At Room And Cryogenic Temperatures 1995 Edition by Gunther Hartwig
Most descriptions of polymers start at room temperature and end at the melting point. This textbook starts at very low temperatures and ends at room temperature. At low temperatures may processes and relaxations are frozen which allows singular processes or separate relaxations to be studied. At room temperatures or at the main glass transitions many processes overlap and the properties are determined by relaxations. At low temperatures there are temperature ranges with negligible influences by glass transitions. They can be used for investigating so-called basic properties which arise from principles of solid state physics. The chain structure of polymers however requires stringent modifications for establishing solid state physics of polymers. Several processes which are specific of polymers occur only at low temperatures. There are also technological aspects for considering polymers at low temperatures. More and more applications of polymeric materials in low temperature technology appear. Some examples are thermal and electrical insulations support elements for cryogenic devices low-loss materials for high frequency equipments. It is hoped that in addition to the scientific part a data collection in the appendix may help to apply polymers more intensively in low temperature technology. The author greatly appreciates the contributions by his coworkers of the Kernforschungszentrum Karlsruhe in measurement and discussion of many data presented in the textbook and its appendix. Fruitful disccussions with the colleagues Prof. H. Baur Prof. S. Hunklinger Prof. D. Munz and Prof. R. Table of contents : Introduction and General Polymer Features. Phonon Structure and Polymers. Specific Heat. Thermal Expansion and the Grueneisen Relation. Thermal Conductivity. Molecular Place Changes and Dampening Spectra. Mechanical Deformation Behavior. Dielectric Properties and their Correlations. Fracture Behavior of Polymers. Cryogenic Measuring Methods. Polymers as Matrix for Composites. Appendix. Index.