Results 111 to 120 of about 105,348 (313)
Angewandte Chemie, EarlyView.This work exemplifies how to make high molar mass ring opening copolymerization (ROCOP) polyesters as engineering plastics, informing upon their thermal and mechanical properties. Leading polyesters, prepared by epoxide/anhydride ROCOP, show high glass transition temperatures and tensile and flexural strengths, matching or exceeding polystyrene ...
Nora Jannsen +4 more
wiley +2 more sources
Flexural strength of dental porcelains with thermocycling and different firing protocols
Saudi Journal of Medicine and Medical Sciences, 2014 Objectives: This is an in vitro study comparing the flexural strength of two dental porcelain after thermocycling, repetitive multiple firings and peak firing temperature (PFT) modifications.
Aws S. A. ArRejaie
doaj +1 more source
The effect of clay on the mechanical properties of epoxy resins subjected to hygrothermal ageing [PDF]
arXiv, 2016 Epoxy polymers are an important class of material for use in various applications. Due to their hydrophilic nature, epoxy resins tend to absorb moisture. Absorption of moisture degrades the functional, structural and mechanical properties. For polymers, it is known that moisture absorption can lead to both reversible and irreversible changes.
arxiv
Demonstration of Complete Recycling Processes of Reversible Epoxies Using Solar Energy Conversion
Advanced Energy and Sustainability Research, EarlyView.Photothermal heating can save time and recourse and, consequently, reduce costs to reach an elevated temperature for recycling processes. Although self‐healing or reattachment is reported, recycling of a sample as a whole is not feasible by using a point light source, e.g., laser.
Madeline Finale +7 more
wiley +1 more source
Fully Bio‐Based Epoxy Thermoset Based on Epoxidized Linseed Oil and Tannic Acid
Macromolecular Materials and Engineering, Volume 307, Issue 12, December 2022., 2022 By using epoxidized linseed oil and tannic acid to produce a bio‐based thermoset, this work pursues the approach of replacing hazardous and petrochemical‐derived materials with nontoxic bio‐based materials while preserving the efficacy of function. Thus, good thermal‐ and mechanical properties such as a flexural modulus of 2986 MPa, Tg of 147 °C, or ...
Nikita Reinhardt +3 more
wiley +1 more source
Journal of Materials Research and Technology, 2018 Testing and evaluation of mechanical properties for FRP (Fiber Reinforced Polymer) composite parts play a significant role to qualify it for the end use.
Akhil Mehndiratta +3 more
doaj
EnergiesTo improve the conductivity and flexural strength of bipolar plates for proton-exchange membrane fuel cells, multi-filler-reinforced composites were prepared using graphite, multiwalled carbon nanotubes (MWCNTs), chopped carbon fibers (CCFs), and ...
Huili Wei +3 more
doaj +1 more source
Multistable Composite Laminate Grids as a Design Tool for Soft Reconfigurable Multirotors
Advanced Intelligent Systems, EarlyView.Flexible, lightweight, stable: the reconfigurable multirotor combines stable flight in multiple shapes with low‐energy reconfiguration. Utilizing optimized multistable composites, it achieves self‐locking in open and folded configurations, cutting width‐span by 48% and allowing for safe gap traversal.
Luca Girardi +4 more
wiley +1 more source
Spring and Power in Hovering Ornithopters
Advanced Intelligent Systems, EarlyView.Only small ornithopters can hover, longest at the hummingbird size. This article reviews the drive and power of these hovering machines, focusing on elastic energy and thrust boosters. Unlike two‐winged designs, X‐winged and multiple‐V‐winged ornithopters benefit from lower disk loading and slower, smaller wingbeats, and the clap‐and‐fling effect ...
Gih‐Keong Lau +4 more
wiley +1 more source
Closure to “Flexural Strength of Steel-Concrete Composite Beams” [PDF]
, 1966 R. G. Slutter, G. C. Driscoll
openalex +1 more source