Technology Of Wood Bonding Principles In Practice
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Technology Of Wood Bonding Principles In Practice
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Author : Alan A. Marra
language : en
Publisher: Springer
Release Date : 1992-10-15
Technology Of Wood Bonding Principles In Practice written by Alan A. Marra and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-10-15 with Juvenile Nonfiction categories.
Wood composites and other glued and laminated wood structures are used in numerous capacities today and their use is on the rise. This book aims to demystify and simplify the processes, the chemistry and the engineering underlying wood bonding and gluing.
Wood Adhesives
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Author : A. Pizzi
language : en
Publisher: Routledge
Release Date : 2018-10-08
Wood Adhesives written by A. Pizzi and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-08 with Science categories.
The perfect companion to the highly acclaimed Volume 1 of Wood Adhesives,Volume 2 presents stimulating discussions on technically and economically importantadhesives for wood bonding-covering their preparation and formulation, as well astechniques and suggestions for their application.Like its companion book, Wood Adhesives, Volume 2 provides up-to-date informationand analysis of new technologies and recent breakthroughs ... gives insightinto the relationship between adhesive chemistry and technical application . . . anddiscusses present and future trends likely to have considerable impact on the field.Elaborating upon general overviews presented in Volume 1, Wood Adhesives,Volume 2 includes a chapter on protein adhesives ... fills the gap on the chemistryof polyvinyl acetate wood adhesives ... contains a detailed discussion of formaldehydeemission ... and much more.A complementary and much needed follow-up to Volume 1, Wood Adhesives,Volume 2 is essential reading for wood technologists; adhesives and physicalchemists; forest products researchers; polymer scientists; chemical, mechanical, process,and civil engineers who must choose and apply wood adhesives; and advancedundergraduate and graduate students in the above disciplines.
Springer Handbook Of Wood Science And Technology
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Author : Peter Niemz
language : en
Publisher: Springer Nature
Release Date : 2023-04-01
Springer Handbook Of Wood Science And Technology written by Peter Niemz and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-04-01 with Technology & Engineering categories.
This handbook provides an overview on wood science and technology of unparalleled comprehensiveness and international validity. It describes the fundamental wood biology, chemistry and physics, as well as structure-property relations of wood and wood-based materials. The different aspects and steps of wood processing are presented in detail from both a fundamental technological perspective and their realisation in industrial contexts. The discussed industrial processes extend beyond sawmilling and the manufacturing of adhesively bonded wood products to the processing of the various wood-based materials, including pulp and paper, natural fibre materials and aspects of bio-refinery. Core concepts of wood applications, quality and life cycle assessment of this important natural resource are presented. The book concludes with a useful compilation of fundamental material parameters and data as well as a glossary of terms in accordance with the most important industry standards. Written and edited by a truly international team of experts from academia, research institutes and industry, thoroughly reviewed by external colleagues, this handbook is well-attuned to educational demands, as well as providing a summary of state-of-the-art research trends and industrial requirements. It is an invaluable resource for all professionals in research and development, and engineers in practise in the field of wood science and technology.
Introduction To Wood And Natural Fiber Composites
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Author : Douglas D. Stokke
language : en
Publisher: John Wiley & Sons
Release Date : 2013-10-21
Introduction To Wood And Natural Fiber Composites written by Douglas D. Stokke and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-21 with Science categories.
Over the past two decades, there has been a shift in research and industrial practice, and products traditionally manufactured primarily from wood are increasingly combined with other nonwood materials of either natural or synthetic origin. Wood and other plant-based fiber is routinely combined with adhesives, polymers, and other "ingredients" to produce composite materials. Introduction to Wood and Natural Fiber Composites draws together widely scattered information concerning fundamental concepts and technical applications, essential to the manufacture of wood and natural fiber composites. The topics addressed include basic information on the chemical and physical composition of wood and other lignocellulosic materials, the behavior of these materials under thermocompression processes, fundamentals of adhesion, specific adhesive systems used to manufacture composite materials, and an overview of the industrial technologies used to manufacture major product categories. The book concludes with a chapter on the burgeoning field of natural fiber-plastic composites. Introduction to Wood and Natural Fiber Composites is a valuable resource for upper-level undergraduate students and graduate students studying forest products and wood science, as well as for practicing professionals working in operational areas of wood- and natural-fiber processing. For more information on the Wiley Series in Renewable Resources, visit www.wiley.com/go/rrs Topics covered include: Overview of lignocellulosic material, their chemical and physical composition Consolidation behavior of wood and fiber in response to heat and pressure Fundamentals of adhesion Adhesives used to bond wood and lignocellulosic composites Manufacturing technology of major product types Fiber/plastic composites
Handbook Of Adhesive Technology
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Author : Antonio Pizzi
language : en
Publisher: CRC Press
Release Date : 2017-12-15
Handbook Of Adhesive Technology written by Antonio Pizzi and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-15 with Medical categories.
This classic reference examines the mechanisms driving adhesion, categories of adhesives, techniques for bond formation and evaluation, and major industrial applications. Integrating recent innovation and improved instrumentation, the work offers broad and comprehensive coverage. This edition incorporates several new adhesive classes, new application topics, and recent developments with nanoadhesives and bio-based adhesives. Existing chapters are thoroughly updated, revised, or replaced and authored by top specialists in the field. Abundant figures, tables, and equations appear throughout the work.
Plywood And Adhesive Technology
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Author : Terry Sellers
language : en
Publisher: CRC Press
Release Date : 1985-11-21
Plywood And Adhesive Technology written by Terry Sellers and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985-11-21 with Technology & Engineering categories.
Adhesive Bonding
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Author : Robert D. Adams
language : en
Publisher: Woodhead Publishing
Release Date : 2021-07-02
Adhesive Bonding written by Robert D. Adams and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-07-02 with Technology & Engineering categories.
Adhesive Bonding: Science, Technology and Applications, Second Edition guides the reader through the fundamentals, mechanical properties and applications of adhesive bonding. This thoroughly revised and expanded new edition reflects the many advances that have occurred in recent years. Sections cover the fundamentals of adhesive bonding, explaining how adhesives and sealants work, and how to assess and treat surfaces, how adhesives perform under stress and the factors affecting fatigue and failure, stress analysis, environmental durability, non-destructive testing, impact behavior, fracture mechanics, fatigue, vibration damping, and applications in construction, automotive, marine, footwear, electrical engineering, aerospace, repair, electronics, biomedicine, and bonding of composites. With its distinguished editor and international team of contributors, this book is an essential resource for industrial engineers, R&D, and scientists working with adhesives and their industrial applications, as well as researchers and advanced students in adhesion, joining, polymer science, materials science and mechanical engineering. Offers detailed, methodical coverage of the fundamentals, mechanical properties and industrial applications of adhesive bonding Enables the successful preparation of adhesives for a broad range of important load-bearing applications in areas such as automotive and aerospace, construction, electronics and biomedicine Covers the latest advances in adhesive bonding, including improved repair techniques for metallic and composite structures, cohesive zone modeling, and disassembly and recycling
Handbook Of Green Materials Processing Technologies Properties And Applications In 4 Volumes
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Author : Kristiina Oksman
language : en
Publisher: World Scientific
Release Date : 2014-04-11
Handbook Of Green Materials Processing Technologies Properties And Applications In 4 Volumes written by Kristiina Oksman and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-04-11 with Science categories.
Green materials and green nanotechnology have gained widespread interest over the last 15 years; first in academia, then in related industries in the last few years.The Handbook of Green Materials serves as reference literature for undergraduates and graduates studying materials science and engineering, composite materials, chemical engineering, bioengineering and materials physics; and for researchers, professional engineers and consultants from polymer or forest industries who encounter biobased nanomaterials, bionanocomposites, self- and direct-assembled nanostructures and green composite materials in their lines of work.This four-volume set contains material ranging from basic, background information on the fields discussed, to reports on the latest research and industrial activities, and finally the works by contributing authors who are prominent experts of the subjects they address in this set.The four volumes comprise of:The first volume explains the structure of cellulose; different sources of raw material; the isolation/separation processes of nanomaterials from different material sources; and properties and characteristics of cellulose nanofibers and nanocrystals (starch nanomaterials). Information on the different characterization methods and the most important properties of biobased nanomaterials are also covered. The industrial point of view regarding both the processability and access of these nanomaterials, as well as large scale manufacturing and their industrial application is discussed — particularly in relation to the case of the paper industry.The second volume expounds on different bionanocomposites based on cellulose nanofibers or nanocrystals and their preparation/manufacturing processes. It also provides information on different characterization methods and the most important properties of bionanocomposites, as well as techniques of modeling the mechanical properties of nanocomposites. This volume presents the industrial point of view regarding large scale manufacturing and their applications from the perspective of their medical uses in printed electronics and in adhesives.The third volume deals with the ability of bionanomaterials to self-assemble in either liquids or forming organized solid materials. The chemistry of cellulose nanomaterials and chemical modifications as well as different assembling techniques and used characterization methods, and the most important properties which can be achieved by self-assembly, are described. The chapters, for example, discuss subjects such as ultra-light biobased aerogels based on cellulose and chitin, thin films suitable as barrier layers, self-sensing nanomaterials, and membranes for water purification.The fourth volume reviews green composite materials — including green raw materials — such as biobased carbon fibers, regenerated cellulose fibers and thermoplastic and thermoset polymers (e.g. PLA, bio-based polyolefines, polysaccharide polymers, natural rubber, bio-based polyurethane, lignin polymer, and furfurylalchohol). The most important composite processing technologies are described, including: prepregs of green composites, compounding, liquid composite molding, foaming, and compression molding. Industrial applications, especially for green transportation and the electronics industry, are also described.This four-volume set is a must-have for anyone keen to acquire knowledge on novel bionanomaterials — including structure-property correlations, isolation and purification processes of nanofibers and nanocrystals, their important characteristics, processing technologies, industrial up-scaling and suitable industry applications. The handbook is a useful reference not only for teaching activities but also for researchers who are working in this field.
Bondability Of Modified Wood
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Author : Alireza Bastani
language : en
Publisher: Cuvillier Verlag
Release Date : 2016-06-30
Bondability Of Modified Wood written by Alireza Bastani and has been published by Cuvillier Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-06-30 with Science categories.
This study investigates the bonding properties of modified wood by considering three different aspects: water related characteristics, mechanical performance and optical (fluorescence microscopy and X-ray micro-computed tomography) observation of adhesive penetration into modified wood structure. In recent years, the new wood modifications have become more commercially available in the market for both exterior and interior applications due to improved properties that modification can bring to the wood e.g. the improved biological durability, dimensional stability, hardness and weathering resistance of the wood as well as the environmentally friendly nature of the wood modification processes (Militz and Hill 2005). Besides these advantages, modification can affect some technological aspects of the wood such as its bonding performance. For example, it can alter the strength of adhesion as a result of changes in chemical, physical and structural characteristics of the wood. For example, the less polar and less porous modified wood surfaces can result in reduced adhesion due to formation of less free OH groups for bonding leading to poorer adhesive wetting of the wood surface and weaker chemical bonds between the two adherents (Hunt et al. 2007). As modified wood becomes a more demanded material for different applications, there is a need to study its bonding performance where the challenge is to bond different modified materials as their physical and chemical characteristics are substantially changed by modification. In this thesis, measurements of capillary water uptake, contact angle and surface energy were used to determine the water related properties and hydrophobic behavior of furfurylated (FA40 and FA70, which represent 65 and 75 % WPGs) and N-methylol melamine (NMM) (10, 20 and 30%) modified Scots pine and thermally treated Scots pine and beech (modified through an industrial scale vacuum press dewatering method at 195 and 210 °C). The capillary water uptake results indicated a considerable reduction of water uptake for all modifications in all directions both after short (24 h) and long contact times (168, 336 h). Contact angle measurement data revealed an increased hydrophobicity of modified wood. However, some exceptions were observed, mainly for thermally treated wood. Modifications provided radial and tangential surfaces with a non-polar character. Penetration of adhesives into the wood structure plays an important role in the production of glued wood-based panels and products by affecting the bond quality (Frihart 2005, Kamke and Lee 2007). The gross penetration of emulsion polymer isocyanate (EPI), polyurethane (PU) and polyvinyl acetate (PVAc) adhesives into modified wood, both with and without pressure, were determined by using fluorescence microscopy based on measurements of effective (EP) and maximum penetration (MP). Without application of pressure, the EP of EPI adhesive reduced after NMM modification and furfurylation (FA70) and also PU adhesive after NMM modification while the EP of PVAc adhesive increased into furfurylated and NMM modified (10 and 20%) wood. For thermally treated Scots pine, increasing the treatment temperature improved EP of all adhesives. Among used adhesives, PU penetrated much deeper into thermally treated wood for both treatment temperatures. Comparison of penetration of adhesive with and without pressure revealed that with the exception of EP of PU and EPI adhesives into NMM-modified wood and PVAc into thermally treated beech at 195°C, application of pressure led to rather different results as compared to the EP data when no pressure was applied. Visual observation and analysis of fluorescence microscopy photomicrographs provided more detailed information on modality of penetration. Due to the large and deep penetration of PU adhesive into thermally treated Scots pine observed in both studies (with and without pressure), the 3D pattern of penetration of this adhesive was obtained by X-ray micro- computed tomography indicating the pathways which were used by this adhesive for penetration. In another study, the bonding shear strength of the same modified wood materials glued with the same adhesives was also investigated. For all adhesives used, the shear strength significantly reduced after furfurylation and NMM modification of Scots pine samples, mainly due to the brittle nature of the wood after modification rather to the failure of the bondline. Bonding strength of both Scots pine and beech was also negatively affected by thermal modification and the bondline was found to be the weakest link in thermally modified wood. The EP of adhesives and the bondline thickness did not relate to the shear strength of all modified wood materials. It was indicated that the lower shear strength of modified wood could be attributed to other factors, such as the decreased chemical bonding or mechanical interlocking of adhesives, and the reduced strength of brittle modified wood substrate. The effect of two important bonding variables, wood moisture content and open assembly time on penetration of PU adhesive into thermally modified wood (195 and 210 °C) was also studied. The equilibrium moisture content (EMC) level of 8.6% was found to be the optimum for an effective penetration of PU adhesive in thermally modified Scots pine treated at 195°C. In most of the cases, penetration of PU adhesive did not change significantly by increasing the open assembly time, which suggested using a shorter open assembly time of 15 min than 30 min for bonding of thermally modified Scots pine with PU adhesive, in order to save time and reducing the production costs. For samples treated at both treatment temperatures and after shorter open assembly time, the highest MP values observed at moderate EMC levels of 8.6 and 8.2% and the lowest at the higher EMC levels of 13.2 and 12.5%. In another study, the effect of phenol formaldehyde (PF) treatment on bonding performance of beech glued with PVAc and phenol resorcinol formaldehyde (PRF) adhesives was also investigated. The results of both dry and wet conditions indicated higher shear strength for samples bonded with PRF than PVAc. With the exception of 25% PF treated wood bonded with PVAc, the PF modified wood can be glued with both adhesives satisfactorily under dry condition, while under wet condition only the 25% PF modified samples bonded with PRF provided acceptable bonding. For both adhesive systems, PF modification caused a reduction of adhesive penetration into wood structure, especially in the case of higher load treatment. The development of bonding strength of modified birch veneers glued with hot curing phenol formaldehyde (PF) adhesive was investigated in different pressing (20 s , 160s) and open assembly times (20s , 10 min). Generally, the bonding strength improved by extending the pressing time. In 20 s pressing, increasing assembly time did not change the bonding strength in most of the cases while at 160 s pressing, prolongation of assembly time developed a better bonding for controls, NMM modified and thermally treated veneers at 180°C. The combination of 10 min assembly time and 160 s pressing time provided the highest bonding strength for controls, NMM modified and thermally treated veneers at 180°C while furfurylated samples achieved the highest values in 20 s assembly and 160 s pressing times. In general, modification affected negatively the bonding performance of the veneers, especially for furfurylated and NMM modified samples. In General, the overall results obtained in this thesis showed that modified wood has lower bonding ability and performance than unmodified wood as result of the decreased water related properties, less penetration of adhesive into wood structure and decreased bonding strength after modification. However, the increased dimensional stability and low water uptake of modified wood might lead to better performance in long term.
Research Developments In Wood Engineering And Technology
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Author : Aguilera, Alfredo
language : en
Publisher: IGI Global
Release Date : 2013-09-30
Research Developments In Wood Engineering And Technology written by Aguilera, Alfredo and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-30 with Technology & Engineering categories.
"This book examines the latest research advances and technological developments for wood material as an engineering product and the innovation it provides for environmental friendly materials"--Provided by publisher.