Download or read book Conference Book of Papers written by and published by iSmithers Rapra Publishing. This book was released on 1996 with total page 500 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 Advances in Urethane written by Kurt C. Frisch and published by CRC Press. This book was released on 2020-01-16 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flexible polyurenthane foams of all types are a unique group of plastics materials, characterized by the fact that a multitude of different sets of properties can be obtained by varying the levels of a relatively small number of base components in the formulations. Different foam grades, primarily characterized by density and hardness, can be obtained by changing the ratio between base polyol, polymer polyol, water, blowing agent, isocyanate and other components. It is not uncommon for foam producers in industrialized countries to manufacture more than one hundred different foam grades based on these basic chemicals, plus the ancillary chemicals needed for optimized processing. This has always made flexible polyurethane foams a highly suitable candidate for correlating these variations in the formulations with the resulting properties in a mathematical way, aimed at predicting the properties as accurately as possible, fine-tuning existing grades or designing new foam grades. This book discusses the methodology for obtaining meaningful equations for correlating properties with formulation variables and other influencing factors

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Castable Polyurethane Elastomers written by I.R. Clemitson and published by CRC Press. This book was released on 2008-05-13 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Currently, raw material suppliers are the sole providers of polyurethane processing information. In most cases, they give instruction only on how to mix products and do not always include an explanation of the accompanying logic as to why these recommendations are being made. Castable Polyurethane Elastomers explains the production proces

Download or read book Weathering of Polymers written by S.M. Halliwell and published by iSmithers Rapra Publishing. This book was released on 1992 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the theory of weathering and its effect on polymer properties, methods of stabilisation, and natural and accelerated weathering tests. The problems associated with particular polymers used in outdoor applications are explained. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database provides useful references for further reading.

Download or read book Mine Ventilation written by E. De Souza and published by CRC Press. This book was released on 2002-01-01 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings volume showcases all aspects of the science and engineering of mine ventilation and health and safety, with special focus on the applied aspects of mine ventilation practice. Papers span the spectrum of mine ventilation and air conditioning.

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Composites from the Aquatic Environment written by Sapuan S. M. and published by Springer Nature. This book was released on 2023-01-13 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a methodical compilation of deriving composites from the hidden treasure of the aquatic world.Continuous and rapid progress in the composite industries have increased the demand for resilient, economically viable, and sustainable composite materials having enhanced mechanical , thermal and electrical properties which better suits there respective applications.If the materials/organisms used for the production or conversion of composites are renewable, degradable and easily and abundantly available then it gives great opportunity to the researchers to work on different options or processes to make them a viable technology. This work describes the organisms and materials present in the aquatic environment for the production of composite materials. Elaborating the versatile green expedients and their potential applications in the field of composites. Since, growing ecological and environmental consciousness has driven efforts for development of new innovative materials for various end-use applications.Therefore the LCA an circular bio-economy will be discussed to be efficient and sustainable. This book is ideal for the students, academicians, researchers and industry players. It also cover the present scenario, applications and future perspectives of composites derived from aquatic organisms. This compiled book features chapters that discuss the conversion of different materials and organisms present in aquatic environment to composite materials like micro-algae, seaweeds, chitosan, collagen, agar cyanobacteria etc.in a viable manner.

Download or read book Dental Research in the United States and Other Countries written by and published by . This book was released on 1977 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: A catalog of dental research projects sponsored by federal and non-federal organizations.

Download or read book NIH Publication written by and published by . This book was released on 1978 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Durability of Building Sealants written by RILEM Technical Committee 139-DBS, Durability of Building Sealants and published by RILEM Publications. This book was released on 1999 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cellular Polymers IV written by and published by iSmithers Rapra Publishing. This book was released on 1997 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Department Of Defense Index of Specifications and Standards Federal Supply Class Listing FSC Part III September 2005 written by and published by DIANE Publishing. This book was released on with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Polyurethanes Conference 2000 written by Api and published by CRC Press. This book was released on 2000-10-02 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conference proceedings from 'Defining the Future Through Technology- Polyurethanes', held in Westin Copley Place, Boston, Massachusetts, on October 8-11 2000. Sponsored by the Alliance for the Polyurethanes Industry.

Download or read book Recycling of Polyurethane Foams written by Sabu Thomas and published by William Andrew. This book was released on 2018-06-06 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recycling of Polyurethane Foams introduces the main degradation/depolymerization processes and pathways of polyurethane foam materials, focusing on industrial case studies and academic reviews from recent research and development projects. The book can aid practitioners in understanding the basis of polymer degradation and its relationship with industrial processes, which can be of substantial value to industrial complexes the world over. The main pathways of polymer recycling via different routes and industrial schemes are detailed, covering all current techniques, including regrinding, rebinding, adhesive pressing and compression moulding of recovered PU materials that are then compared with depolymerization approaches. The book examines life cycle assessment and cost analysis associated with polyurethane foams waste management, showing the potential of various techniques. This book will help academics and researchers identify and improve on current depolymerization processes, and it will help industry sustainability professionals choose the appropriate approach for their own waste management systems, thus minimizing the costs and environmental impact of their PU-based end products. - Offers a comprehensive review of all polyurethane foam recycling processes, including both chemical and mechanical approaches - Assesses the potential of each recycling process - Helps industry-based practitioners decide which approach to take to minimize the cost and environmental impact of their end product - Enables academics and researchers to identify and improve upon current processes of degradation and depolymerization

Download or read book Szycher s Handbook of Polyurethanes written by Ph.D, Michael Szycher and published by CRC Press. This book was released on 1999-04-23 with total page 693 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Polyurethanes serves as the first source of information of useful polymers. This new book thoroughly covers the entire spectrum of polyurethanes - from current technology to buyer's information. Discussions include: block and heteroblock systems rubber plasticity structure-property relations mi