Download or read book Study of Cure and Morphology mechanical Properties of Polyurethane Thin Film Elastomers written by Lorna D. Crosthwaite and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polyurethane Elastomers written by Cristina Prisacariu and published by Springer Science & Business Media. This book was released on 2011-07-03 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive account of the physical / mechanical behaviour of polyurethanes (PU ́s) elastomers, films and blends of variable crystallinity. Aspects covered include the elasticity and inelasticity of amorphous to crystalline PUs, in relation to their sensitivity to chemical and physical structure. A study is made of how aspects of the constitutive responses of PUs vary with composition: the polyaddition procedure, the hard segment, soft segment and chain extender (diols and diamines) are varied systematically in a large number of systems of model and novel crosslinked andthermoplastic PUs. Results will be related to: microstructural changes, on the basis of evidence from x-ray scattering (SAXS and WAXS), and also dynamic mechanical analyses (DMA), differential scanning calorimetry (DSC) and IR dichroism. Inelastic effects will be investigated also by including quantitative correlations between the magnitude of the Mullins effect and the fractional energy dissipation by hysteresis under cyclic straining, giving common relations approached by all the materials studied. A major structural feature explored is the relationship between the nature of the hard segment (crystallising or not) and that of the soft segments. Crystallinity has been sometimes observed in the commercial PUs hard phase but this is usually limited to only a few percent for most hard segment structures when solidified from the melt. One particular diisocyanate, 4,4’-dibenzyl diisocyanate (DBDI) that, in the presence of suitable chain extenders ( diols or diamines), gives rise to significant degrees of crystallinity [i-iii] and this is included in the present work. Understanding the reaction pathways involved, in resolving the subtle morphological evolution at the nanometre level, and capturing mathematically the complex, large-deformation nonlinear viscoelastic mechanical behaviour are assumed to bring new important insights in the world basic research in polyurethanes and towards applied industrial research in this area.
Download or read book A Study of Mechanical Properties and Morphology of Aramid Short Fibres thermoplastic Polyurethane Elastomer Composities written by Chanthipa Vajrasthira and published by . This book was released on 2000 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Elastomers written by Nevin Çankaya and published by BoD – Books on Demand. This book was released on 2017-08-30 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary-Book Contents: Your purpose of reading this book is to concentrate on recent developments on elastomers. The articles collected in this book are contributions by invited researchers with a long-standing experience in different research areas. I hope that the material presented here is understandable to a broad audience, not only scientists but also people with many different disciplines. The book contains eleven chapters in two sections: (1) "Mechanical Properties of Elastomers" and (2) "Elastomers for Natural and Medical Applications." The book provides detailed and current reviews in these different areas written by experts in their respective fields. This book will be useful for polymer workers and other scientists alike and will contribute to the training of current and future researchers, academics, PhD students, and other scientists.
Download or read book Morphology and Fatigue Properties of Polyurethane Thermoplastic Elastomers written by Craig Wayne Stephen Myers and published by . This book was released on 1993 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polyurethane thermoplastic elastomers are segmented block polymers consisting of rubbery "soft" blocks and glassy or semi-crystalline "hard" blocks. Thermodynamic incompatibility between the soft and hard blocks causes the formation of a microdomain morphology which imparts elastomeric properties to the material. Despite their commercial importance, the response of these materials to repeated cyclic loading (fatigue) has not been well studied. This work is devoted to achieving a more detailed understanding of the chemical and morphological factors which govern fatigue behavior in polyurethane thermoplastic elastomers.
Download or read book Synthesis and Mechanical Properties of Radiation cured Acrylo urethane Elastomers and Their Structural and Morphological Features written by Mahmoud Ashour Khamis and published by . This book was released on 1984 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polyurethane Elastomers written by C. Hepburn and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this monograph has been to distil into a single volume, in an easily read and assimilated format, the essentials of this often complex technology such that it is usable by all technical and semi-technical people who wish to become their own polyurethane and polyurethane elastomer expert.
Download or read book The Effect of Strain on the Morphology and Mechanical Properties of Thermoplastic Polyurethane Elastomers TPEs written by Dawn Marie Crawford and published by . This book was released on 1997 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research discussed herein entails an investigation of the effect of strain on polymer morphology. Model thermoplastic polyurethane elastomers (TPEs) were subjected to tensile strains between 100% and 400% elongation and aged for varying lengths of time at ambient and elevated temperature. Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) were used to investigate the changes in morphology that occurred as a result of strain elongation. The effect of aging was also related to the TPE's mechanical properties such as abrasion resistance. DSC results indicate that the polymer undergoes morphology changes due to strain, resulting in some degree of phase mixing. DMA data suggest that strain aging causes a minor change in the glass transition temperature (Tg) but a significant change in the peak magnitude of E" and tan delta.
Download or read book The Effect of Strain on the Morphology and Mechanical Properties of Thermoplastic Polyurethane Elastomers TPEs written by Dawn Marie Crawford and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research discussed herein entails an investigation of the effect of strain on polymer morphology. Model thermoplastic polyurethane elastomers (TPEs) were subjected to tensile strains between 100% and 400% elongation and aged for varying lengths of time at ambient and elevated temperature. Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) were used to investigate the changes in morphology that occurred as a result of strain elongation. The effect of aging was also related to the TPE's mechanical properties such as abrasion resistance. DSC results indicate that the polymer undergoes morphology changes due to strain, resulting in some degree of phase mixing. DMA data suggest that strain aging causes a minor change in the glass transition temperature (Tg) but a significant change in the peak magnitude of E" and tan delta.
Download or read book A Study of Morphology wear Relationships in Thermoplastic Polyurethane Elastomers written by James Ivan Mardel and published by . This book was released on 1996 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanocomposite Thermoplastic Elastomers Based on EPDM PP written by Ghasem Naderi and published by . This book was released on 2009-11 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of the Synthesis Characterisation and Morphology of Polyurethane Thermoplastic Elastomers written by Sam Damiris and published by . This book was released on 1998 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermoplastic Elastomers written by N. R. Legge and published by . This book was released on 1987 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 1996 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theses on any subject submitted by the academic libraries in the UK and Ireland.
Download or read book Investigation of the Physical Properties and Morphology of Polyurethane Elastomers written by Monica A. Pocol and published by . This book was released on 1999 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Processing and Additives on the Morphology Thermal and Mechanical Properties of ABA type Elastomeric Films written by Alexander James Neeb and published by . This book was released on 1999 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure Properties and Morphology Relationships of Polyurethane Elastomers Based on Urethane Amide and Urea Diols written by Lung-Turn Chen and published by . This book was released on 1987 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
