Results 11 to 20 of about 18,555 (263)

Hydrolysis-resistant and stress-buffering bifunctional polyurethane adhesive for durable dental composite restoration [PDF]

open access: yesRoyal Society Open Science, 2020
A new elastic polyurethane (PU) adhesive was reported in this study to improve the stability and durability of the dental adhesion interface. A polyurethane oligomer was synthesized by the solution polymerization method, and a diluent and solvent were ...
Jiahui Zhang   +7 more
doaj   +2 more sources

Determination of the Modulus of Elasticity of Wooden Construction Elements Reinforced with Fiberglass Wire Mesh and Aluminum Wire Mesh

open access: yesBioResources, 2017
Laminated composite wooden construction elements were produced with 7 layers of Scots pine (Pinus sylvestris L.). Fiberglass wire mesh and aluminum wire mesh, which were used as reinforcement materials, were pressed with polyvinyl acetate (PVAc) and ...
Abdullah Togay   +5 more
doaj   +1 more source

Characteristics of Polyurethane Cross-Laminated Timber Made from a Combination of Pine and Coconut

open access: yesJurnal Sylva Lestari, 2023
The objective of this study was to assess the properties of cross-laminated timber (CLT) fabricated from the combination of Sumatran pine (P) and coconut trunk (C) bonded with polyurethane adhesive.
Muhammad Iqbal Adi Baskara   +6 more
doaj   +1 more source

Preparation And Characterization Of Waterborne Polyurethane-acrylate Modified By Functionalized Graphene Oxide

open access: yesJournal of Applied Science and Engineering, 2022
A water-borne polyurethane-acrylate emulsion (WPUA) prepolymer was synthesized by using polycaprolactone diol (PCL), toluene diisocyanate (TDI), 2,2-bis (hydroxymethyl) butyric acid (DMBA), 1,4-butanediol (BDO) and methyl methacrylate (MMA) as main ...
Xiaojuan Lai   +5 more
doaj   +1 more source

Use of castor oil-based polyurethane adhesive in the production of glued laminated timber beams

open access: yesMaterials Research, 2006
Researchers from the Polymer Technology and Analytical Chemistry (LQATP) group at the São Carlos Institute of Chemistry, University of São Paulo, developed a polyurethane adhesive based on castor oil.
Maximiliano dos Anjos Azambuja   +1 more
doaj   +1 more source

Biomaterial based novel polyurethane adhesives for wood to wood and metal to metal bonding

open access: yesMaterials Research, 2009
Polyurethane adhesives made from synthetic chemicals are non-biodegradable, costly and difficult to find raw materials from local market. To avoid solid pollution problem, cost effectiveness and easy availability of raw materials, biomaterials based ...
Mitesh Ramanlal Patel   +3 more
doaj   +1 more source

Experimental and applied study on the removal of polyurethane adhesive from the archaeological textiles

open access: yesJournal of Architecture, Art & Humanistic Science, 2021
The objective of this work is to evaluate the efficacy of the gel and nanostructured fluids in the removal of polyurethane adhesive stuck to an archeological textile fragment that suffers from many deterioration forms.
Nabil Mabrouk
doaj   +1 more source

Polyurethane adhesives in flat roofs [PDF]

open access: yesMATEC Web of Conferences, 2017
It is necessary to stabilize individual layers of flat roofs, mainly because of wind suction. Apart from anchoring and surcharge, these layers can be secured by bonding. At present gluing is an indispensable and widely used stabilization method.
Bogárová Markéta   +2 more
doaj   +2 more sources

Effect of isocyanate index on shear strength plywood properties using Acacia mangium polyurethane-based adhesive [PDF]

open access: yesBIO Web of Conferences, 2023
Polyurethane adhesive for wood bonding were prepared from the mixture of Acacia mangium (AM) polyol and 4,4’-methylene diphenyl diisocynate (pMDI). In this study, Acacia mangium polyurethane (AMPU) adhesives were prepared by polymerization between pMDI ...
Lodin Valeritta   +3 more
doaj   +1 more source

Interface Shear Performance between Porous Polyurethane Mixture and Asphalt Sublayer

open access: yesApplied Sciences, 2018
This paper aims to study interface shear performance between porous polyurethane mixture (PPM) and asphalt mixture with different adhesive materials.
Jun Chen   +5 more
doaj   +1 more source

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