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Showing 1 to 14 of 14 for “"wood adhesive"”.
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Comparison of soy-flour hydrolysates for wood adhesive systems
<p>Soy-protein-based adhesives have not been used extensively in wood products since the 1960's because of poor performance, stability, and water-resistance issues compared to petroleum-based adhesives. The early soy-protein adhesives were made from defatted flours and were dispersed in alkaline …
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THE NATURE OF BOND FORMATION AND FAILURE IN WOOD-ADHESIVE SYSTEMS
… or the interphase between polycondensate wood adhesives (urea-formaldehyde (UF), melamine formaldehyde (MF), and phenol-resorcinol-formaldehyde (PRF)) and wood (spruce and scots pine) in an attempt to identify bonding and failure characteristics and forces. A number of techniques were …
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Moisture-Cure Polyurethane Wood Adhesives: Wood/Adhesive Interactions and Weather Durability
… subjects of moisture-cure polyurethane (PUR) wood adhesives: wood/PUR interactions and structure-property behavior emphasizing on weather durability. For these purposes, one simplified model PUR (MPUR) and three more commercially significant PURs (CPURs) with different hard segment contents …
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Factors Affecting the Structural Integrity of Wood-Based Composites: Elevated Temperature and Adhesive Bonding
… factors that affect the structural integrity of wood-based composites. Wood-based composites exposed to fire may decompose due to the elevated temperatures, resulting in a degradation in performance. Thermal modelling can only predict the structural integrity of construction materials in fire if …
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Aspects of Wood Adhesion: Applications of 13C CP/MAS NMR and Fracture Testing
… isocyanate (pMDI) are the two main types of adhesives used in the production of structural wood-based composites. Much is unknown about various aspects of adhesion between these two types of resins and wood. The present research describes the development of techniques which will permit an …
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Investigation of the Wood/Phenol-Formaldehyde Adhesive Interphase Morphology
This work addresses the morphology of the wood/ Phenol-Formaldehyde (PF) adhesive interphase using yellow-poplar. In this case, morphology refers to the scale or dimension of adhesive penetration into wood. The objective is to develop methods for revealing ever smaller levels of wood/resin …
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Characterization of the wood/isocyanate bondline
… diphenylmethane diisocyanate, pMDI, is a wood adhesive that provides excellent composite board properties. Much is unknown about the specific mechanism of pMDI/wood adhesion under conditions that are typical of wood gluing operations. The present research describes the use of ¹⁵N …
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Structure-property relationships of lignin-based isocyanate and amine adhesives for wood
… (HMMM) to form polyurethane and polyether wood adhesives respectively. Adhesive performance in shear block tests indicated: (a) that the combination of lignin and PHDI reduced the adhesive strength shown by neat PMDI. The HMMM failed to produce an acceptable wood adhesive in the absence of …
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An Integrated Process for Catalytical Conversion of Simple Sugars into Platform Chemicals, HMF and FDCA: Catalysis, Continuous Flow Reactor Design, Valorization of Waste By-Product
… and valorizing humin as a biomass-derived wood adhesive were investigated, offering a sustainable approach to utilizing by-products generated during the process. This work provides valuable insights into the efficient conversion of renewable sugars into bio-based chemicals, advancing the …
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Exploration of Wood DCB Specimens Using Southern Yellow Pine for Monotonic and Cyclic Loading
… for refining and understanding the flat wood double cantilever beam (DCB) as a valid means for testing Mode I fracture energy in wood adhesive bonds. Southern yellow pine (SYP) adherends were used with epoxy and phenol formaldehyde (PF) impregnated films, providing two systems with …
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Molecular investigation of the wood/pMDI adhesive bondline
… diisocyanate, pMDI, has become an important wood binder in recent years, due to its excellent performance in wood-based composites. However, much still remains unknown about the nature of their bonding mechanism. This research describes efforts to learn more molecular information about the …
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Characterization of Mixed-Mode Fracture Testing of Adhesively Bonded Wood Specimens
… rates (G) for mixed-mode (I/II) fracture of wood adhesive joints. The aims of the study were: (1) quantifying the fracture properties of two material systems, (2) analyzing the aspects that influence the fracture properties of bonded wood, (3) refining test procedures that particularly …
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Characterization of PF Resol/Isocyanate Hybrid Adhesives
… choices for the manufacture of exterior grade wood-based composites. This work addresses simple physical blends of pMDI dispersed in PF as a possible hybrid wood adhesive. Part one of this study examined the morphology of hybrid blends prepared using commercially available PF and pMDI. It was …
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Performance of Pressure Sensitive Adhesive Tapes In Wood Light-Frame Shear Walls
… constructed with acrylic foam pressure sensitive adhesive (PSA) tape is the focus of this thesis. The objectives of this study were first to investigate the bonding characteristics of adhesive tape to wood substrates and then to expand this investigation to cover adhesive-based shear walls …