Results 51 to 60 of about 3,694 (226)

Performance characterization and pyrolysis kinetics of graphene-reinforced, green rigid polyurethane foam

Materials Research Express, 2022
Rigid polyurethane (PU) foam waste was chemically degraded by the two-component alcoholysis agent of diethylene glycol and ethanolamine and graphine oxide (GO), and PU/GO nanocomposites were obtained by one-step foaming.
Xiaohua Gu, Xiaoyao Wang, Siwen LIu, Xinyu Guo, Tong Wang, Anyu Fan, Yan Liu   +6 more
doaj   +1 more source

Adhesive Double‐Network Granular Organogel E‐Skin

Advanced Materials Technologies, EarlyView.
We introduce a double‐network granular organogel adhesive for electronic skin, overcoming adhesion and strength trade‐offs. It provides reversible, robust bonding and ionic conductivity, enabling wearable and soft robotic e‐skin. Thanks to the e‐skin adhesive, a soft robotic trunk can recognize touch, temperature, humidity, and acidity.
Antonia Georgopoulou, Benhui Dai, Kadence Shen Yu Chow, Josie Hughes, Esther Amstad   +4 more
wiley   +1 more source

Experimental and numerical analysis of a 3D-foam model subjected to uniaxial compression and low-velocity impact loading

Results in Engineering
Rigid polyurethane foam (RPUF) is widely used in engineering applications due to its superior mechanical and thermal properties. However, the influence of pore density and solvent exposure on its mechanical behavior under different loading conditions ...
Debela N. Gurmu, Krzysztof Wacławiak, Hirpa G. Lemu   +2 more
doaj   +1 more source

Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications

Advanced Materials Technologies, EarlyView.
Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke, Moses Kumi, Xiaoming Tao, Junhong Pu   +3 more
wiley   +1 more source

The Impact of Dextrin-Activated Expanded Perlite and Vermiculite Particles on the Performance of Thermal Insulating Rapeseed Oil-Based Polyurethane Foam Composites

Applied Sciences
To enhance the performance of polyurethane foams, fillers are often incorporated into the matrix. However, the interaction between the filler and the polyurethane matrix is crucial for achieving the desired property improvements.
Agnė Kairytė, Aliona Levina
doaj   +1 more source

Methods for determining the number of closed cells in rigid sprayed polyurethane foam

MATEC Web of Conferences, 2018
Polyurethane foams are currently the most effective thermal insulation materials, polyisocyanurates have low combustibility. Predicting the number of closed cells forming a gas-filled matrix in the finished polymer is necessary to improve the quality and
Gravit V. Marina, Ogidan Olamipe, Znamenskaya Elena   +2 more
doaj   +1 more source

Hierarchical Multi‐Material Architectures With Gradient Design for Dynamic‐Range Flexible Tactile Sensing

Advanced Materials Technologies, EarlyView.
Hierarchical multi‐material TPMS lattices are engineered as flexible tactile sensors by combining soft and stiff elastomeric layers with a conformal conductive coating. The bilayer architecture delivers sensitivity at low pressures while maintaining a broad detectable range under large loads, enabling reliable pressure and vibration monitoring for ...
Reza Noroozi, Domenic Quiquero, Yan Yan Shery Huang, HaoTian Harvey Shi   +3 more
wiley   +1 more source

Synthesis of reactive phenylphosphoryl glycol ether oligomer and improved flame retardancy and mechanical property of modified rigid polyurethane foams

Materials & Design, 2019
A novel reactive phenylphosphoryl glycol ether oligomer (PPGE) was synthesized to improve the flame retardancy of rigid polyurethane foam (RPUF). The PPGE segments in RPUF simultaneously enhanced its compressive modulus and flame retardancy.
Ningjing Wu, Fukun Niu, Wenchao Lang, Jihang Yu, Guoliang Fu   +4 more
doaj   +1 more source

Bridging Optical and Mechanical Metamaterial/Metasurface Realms Toward Integrated Meta‐Systems

Advanced Optical Materials, EarlyView.
This perspective describes the rise of metamaterials in the field of materials science, specifically with optical and mechanical functionality. Fundamentals of both optical and mechanical metamaterials are discussed with a review of state‐of‐the‐art metamaterial science.
Justin Brackenridge, Jaejun Lee, Vladimir V. Tsukruk   +2 more
wiley   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source