Results 21 to 30 of about 3,694 (226)

Test on Shear Behavior of Double-Sided Thin Steel Plate Shear Wall Filled with Rigid Polyurethane Foam

open access: yesBuildings, 2023
A double-sided thin steel plate shear wall filled with rigid polyurethane foam (SWR) is proposed. A quasi-static monotonic loading test and quasi-static cycling loading test on shear behavior and the energy dissipation capacity of the SWR were carried ...
Renjie Liu   +4 more
doaj   +1 more source

Characterization of Thermal and Mechanical Properties of Lignosulfonate- and Hydrolyzed Lignosulfonate-based Polyurethane Foams

open access: yesBioResources, 2016
Lignosulfonate and lignosulfonate hydrolyzed under alkaline conditions were used as the polyol components in polyurethane foam formulations. Although the treatment increased hydroxyl group abundance, it did not improve the applicability of hydrolyzed ...
Katarzyna Wysocka   +3 more
doaj   +1 more source

Determining the Components of Foaming Agents That Can Have a Decisive Impact On Reducing the Absorption Proprieties of Rigid Polyurethane Foam Waste in Relation to Post-Foaming Waste [PDF]

open access: yesBezpieczeństwo i Technika Pożarnicza, 2018
Aim: The aim of this publication is to experimentally identify the components of foaming agents that may have an impact on reducing the absorbency of rigid polyurethane foam waste in relation to post-foaming waste.
Tomasz Węsierski, Oliwer Eszer
doaj   +1 more source

Environmental Assessment of Bio-Oil Transformation from Thistle in the Italian Context: An LCA Study

open access: yesEnvironmental and Climate Technologies, 2020
The present study is a cradle-to-gate Life Cycle Assessment of a hypothetical production process of rigid polyurethane foam obtained from thistle seed oil, grown on the marginal soils of the Umbria region, Italy.
Tortoioli Samuele   +4 more
doaj   +1 more source

Field experiment of vibration characteristics of lightweight embankments converted from bridges using rigid polyurethane foam-filling under traffic load

open access: yesCase Studies in Construction Materials, 2023
The method of filling the lower space of a bridge with rigid polyurethane foam (RPU foam) to reduce the traffic load along with seismic reinforcement has rarely been applied to extend the life of bridges in Japan.
Atsushi Koyama   +4 more
doaj   +1 more source

A review of utilization of waste polyurethane foam as lightweight aggregate in concrete

open access: yesHeliyon
Engineered concrete mixes using industrial waste as a construction material are an enormous step towards sustainable development and financial benefits.
R. Roobankumar, M. SenthilPandian
doaj   +1 more source

Membrane Wrapping for High Capacity and Rapidly Switchable Adhesives

open access: yesAdvanced Functional Materials, EarlyView.
A membrane‐wrapping mechanism enables high‐capacity, rapidly switchable adhesion by coupling suction, friction, and adhesion. Broadband performance is achieved in dry and underwater conditions, allowing fast, reversible manipulation of objects of diverse sizes and shapes, from delicate eggs and berries to flat, complex, or heavy objects. These outcomes
Yeunhee Kim   +2 more
wiley   +1 more source

Effect of silicone surfactant and distilled water on the structure, morphology, density, and compressive strength of polyurethane foam with utilization of castor oil [PDF]

open access: yesEPJ Web of Conferences
Polyurethane (PU) foam is used almost everywhere—from packaging to insulation and construction—but its production still relies largely on petroleum-based ingredients.
Herbirowo Satrio   +4 more
doaj   +1 more source

Worker exposure to flame retardants in manufacturing, construction and service industries

open access: yesEnvironment International, 2020
Workers in several industries are occupationally exposed to flame retardants. This study characterizes flame retardant exposure for nine industries through air and hand wipe measures for 105 workers.
Cheryl Fairfield Estill   +4 more
doaj   +1 more source

Upcycling of Disposable Face Masks into Water‐Resistant and Flame Retardant Foams

open access: yesAdvanced Functional Materials, EarlyView.
Disposable mask waste is upcycled into lightweight polypropylene‐based foams with tunable porosity and composite architectures reinforced by ear‐loop fibers. The sustainable solvent‐based process enables upcycling rates of 91% and solvent recovery of >90%.
Jingjing Pan   +3 more
wiley   +1 more source

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