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Showing 1 to 20 of 269 for “"Adhesives"”.
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THE DURABILITY OF PHENOLIC ADHESIVES
… superior durability claimed for phenolic-based adhesives, in hot humid conditions. The systems under study were the nitrile-phenolics AF-10 and AF-30 (3M), the vinyl-phenolic Redux 775 and the modified epoxide Redux 312 (Ciba-Geigy). The AF-30 structural adhesive was used with and without the …
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Characterization of modified polyimide adhesives
… imidization were investigated as structural adhesives for titanium. The solution thermal imidization procedure was found to result in favorable adhesive characteristics while the presence of siloxane segments in the polymer backbone improved the resistance of stressed specimens to moisture. …
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Biodegradable adhesives for orthopedic surgery
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1980
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A beam test for adhesives
… A pure and quasi-uniform shear test for stiff adhesives is proposed. Analytical solutions are compared with Finite Element solutions from VISTA and NOVA for the stresses in the adhesive. It appears that the assumption of pure shear is nearly valid even for very stiff and/or very thick …
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Metal/polymer interactions in polyimide adhesives
… chemical stability, polyimides are often used as adhesives in hazardous environments. This study examines the effect of thioether sulfur in the polyimide backbone on bond strength. X-ray photoelecton spectroscopy (XPS) and reflectance infrared spectroscopy indicated that certain metals catalyze …
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Nonlinear viscoelastic characterization of structural adhesives
… of the nonlinear viscoelastic behavior of two adhesives, FM-73 and FM-300, are presented and discussed. Analytical methods to quantify the measurements are given and fitted into a framework of an accelerated testing and analysis procedure. The single integral model used is shown to function …
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Characterization of PF Resol/Isocyanate Hybrid Adhesives
Water-based resol phenol formaldehyde, PF, and organic polymeric methylenebis(phenylisocyanate), pMDI, are the two primary 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 …
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Organic Fillers in Phenol-Formaldehyde Wood Adhesives
… fillers impact the properties of the formulated adhesives and adhesive bond performance. The fillers studied in this work are derived from walnut shell (Juglans regia), alder bark (Alnus rubra), and corn cob (furfural production) residue. Alder bark and walnut shell exhibited chemical …
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Studies of PF Resole / Isocyanate Hybrid Adhesives
… are two commonly used exterior thermosetting adhesives in the wood-based composites industry. There is an interest in combining these two adhesives in order to benefit from their positive attributes while also neutralizing some of the negative ones. Although this novel adhesive system has been …
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Rate and time dependent behavior of structural adhesives
Studies on two adhesives (Metlbond 1113 and 1113-2) identified as having applications in the bonding of composite materials are presented. Constitutive equations capable of describing changes in material behavior with strain rate are derived from various theoretical approaches. It is shown that …
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The electrical and mechanical properties of structural adhesives
… on metals. High performance structural adhesives are used to bond CFC panels together, though the performance characteristics of bonded joints in CFC panels differ considerably from those of bonded joints in metal and alloy panels, particularly with regard to the electrical …
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Multi-Scale Cohesive Failure Modeling of Heterogeneous Adhesives
… failure response of stiff-inclusion-reinforced adhesives, self-healing adhesives and rubber-toughened adhesives using the multi-scale cohesive framework. We present the effect of several microscopic parameters on the macroscopic failure properties of these adhesives.
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Development of sodium silicate adhesives for electrical steel bonding
Inorganic adhesives have several benefits over traditional joining methods for joining electrical steels used in magnetic cores of numerous industrial applications. As insulators with very high melting temperatures, the adhesives offer the possibility of increasing the efficiency of these machines. …
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Carboxymethylcellulose Acetate Butyrate Water-Dispersions as Renewable Wood Adhesives
… of these polymers were studied as renewable wood adhesives. Neat polymer analyses revealed that the apart from MW, the CMCAB systems had different acid values, and that the high MW system was compromised with gel particle contaminants. Formulation of the polymer into water-dispersions was …
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High Temperature Tensile Strength of Ceramic Adhesives to Stainless Steel
Made available in DSpace on 2014-12-05T22:57:03Z (GMT). No. of bitstreams: 1 6100158.pdf: 4501335 bytes, checksum: a28c8e107d0b05e3c3098400b384bc5f (MD5) Previous issue date: 1960
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A Kirigami Approach for Controlling Properties of Adhesives and Composites
… trade-off. The kirigami principle is applied to adhesives to control adhesion through arrays of linear cut patterns (Chapter 2). The spatial layout of elasticity in the kirigami-inspired adhesive enhances adhesion over homogeneous adhesive systems and generates anisotropic adhesion. The utility …
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The nonlinear viscoelastic behavior of adhesives and chopped fiber composites
The viscoelastic behavior of a chopped glass fiber/polyester sheet molding compound (SMC-25) and of a modified epoxy adhesive (Metlbond 1113-2) as determined by creep and creep recovery tests is presented. A nonlinear viscoelastic characterization method of Schapery is presented and applied to the …
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Studies of the formation and properties of urea-formaldehyde resin adhesives
Urea-formaldehyde (UF) resin is used primarily as an adhesive for manufacturing wood panels (medium density fiberboard, particleboard and plywood). These are important New Zealand export products. A better understanding of the formation of UF resin will allow maximisation of its adhesive properties …
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Mechanical Effects of Surgical Adhesives on Ascending Thoracic Aortic Aneurysm Replacement
… treatment. In addition, surgical adhesives are frequently used in the surgeries to seal the anastomotic site. This study aims to investigate mechanical effects of four commonly used surgical adhesives, namely BioGlue, CoSeal, Crosseal, and Tisseel, on the suture site using in-vitro …
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