Results 31 to 40 of about 295,461 (303)
Study of Aerogel-Modified Recycled Polyurethane Nanocomposites
Nanomaterials, 2023 In this study, a liquid regenerated polyether polyol was obtained after the degradation of waste PU foam by the two-component decrosslinker agents ethylene glycol and ethanolamine.
Xiaohua Gu +3 more
doaj +1 more source
Polyurethane Foams: Past, Present, and Future
Materials, 2018 Polymeric foams can be found virtually everywhere due to their advantageous properties compared with counterparts materials. Possibly the most important class of polymeric foams are polyurethane foams (PUFs), as their low density and thermal conductivity
N. Gama +2 more
semanticscholar +1 more source
Polymers, 2022 Dressings made with polyurethanes have been found to exhibit good and varied biological properties that make them good candidates for this application. However, as has been seen, the wound-healing process is complex, which includes four different stages.
M. Morales-González +3 more
semanticscholar +1 more source
Polymers, 2021 Polyurethanes and polyurethane-ureas, particularly their water-based dispersions, have gained relevance as an extremely versatile area based on environmentally friendly approaches. The evolution of their synthesis methods, and the nature of the reactants
A. Santamaria-Echart +4 more
semanticscholar +1 more source
Preparation of Polyether Ester Polyols and their Application in Hydrophilic Foam
Pige Kexue Yu GongchengNovel polyether ester polyols (PGA) containing ester bonds were prepared by esterification-polycondensation reaction using polyethylene glycols and adipic acid as raw materials.
Yongsheng GUO +4 more
doaj +1 more source
Material Flows of Polyurethane in the United States.
Environmental Science and Technology, 2021 Today, polyurethanes are effectively not recycled and are made principally from nonrenewable, fossil-fuel-derived resources. This study provides the first high-resolution material flow analysis of polyurethane flows through the U.S.
Chao Liang +7 more
semanticscholar +1 more source
Mechanical Properties of Medical Bandage with Different Polyester/Polyurethane Ratios
Nantong Daxue xuebao. Ziran kexue ban, 2020 With polyester and polyurethane filaments as raw materials, different medical bandages are produced with different polyester/polyurethane ratios(polyester/polyurethane ratios are 1∶0, 1∶1, 1∶2, 1∶9). The basic properties and mechanical properties of each
CHENG Ran ZHANG Yu WANG Hailou
doaj +1 more source
Chemical Engineering Journal AdvancesThe aim of this research was to design a new polysulfone for the support layer of thin film composite (TFC) membranes and compare it with commercial structures for desalination applications.
Armaghan Moghaddam +2 more
doaj +1 more source
, 2021 In this paper, reactive polyurethane and graphene oxide were used to prepare polyurethane/graphene oxide (PU/GO) nanocomposite, which were polymerized in situ and then were sheared at high-speed in asphalt.
Ruien Yu +8 more
semanticscholar +1 more source
Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures
Advanced Engineering Materials, EarlyView.We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann +2 more
wiley +1 more source