Results 41 to 50 of about 318,803 (303)

Preparation and Properties of Polyurethane Foam Grouting Material Modified by Waterglass [PDF]

长江科学院院报
[Objective] Grouting has been recognized as an effective solution for water inrush treatment in underground engineering. Organic grouting materials such as polyurethane (PU) are strongly adhesive but expensive,whereas inorganic grouting materials such as
WANG Lei-yu, XIAO Bi, ZHENG Xiao-kang, SHAO Xiao-mei, CHEN Liang
doaj   +1 more source

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

Advanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana, Indra Apsite, Leonid Ionov   +2 more
wiley   +1 more source

Effect of reaction time on the molecular weight distribution of polyurethane modified epoxy and its properties

Journal of Materials Research and Technology, 2022
This paper studied the synthesis of polyurethane modified epoxy via simultaneous reaction by varying the reaction time to 30, 60, and 90 min. The polypropylene glycol and tolonate as polyurethane components were reacted simultaneously with epoxy in the ...
Evi Triwulandari, Widya Fatriasari, Apri Heri Iswanto, Melati Septiyanti, Eko Fahrul Umam, Muhammad Ghozali   +5 more
doaj   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

Advanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein, Tiago Carneiro Gomes, Eliza Ng, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +4 more
wiley   +1 more source

Bio‐Orthogonally Crosslinked Supramolecular Polymer Bottlebrush Hydrogels for Long‐Term 3D Cell Culture

Advanced Functional Materials, EarlyView.
Fibrous benzenetrispeptide (BTP) hydrogels, fabricated via strain‐promoted azide‐alkyne cycloaddition (SPAAC) crosslinking, form robust, bioinert networks. These hydrogels can support 3D cell culture, where cell viability and colony growth depend on the fiber content.
Ceren C. Pihlamagi, David Pretzel, Peer Nölte, Kourosh Rezaei, Ulrich S. Schubert, Johannes C. Brendel   +5 more
wiley   +1 more source

Molecular dynamics insights into temperature effects on polyurethane-aggregate adhesion: comparative analysis of SiO2 and CaCO3

Frontiers in Built Environment
In this study, molecular dynamics was used to investigate the adhesion properties between polyurethane and aggregate and to reveal the adhesion mechanism between polyurethane and aggregate.
Haihong Zhang, Yan Zhang, Xiaowei Feng, Xiaowei Feng, Yanxiang Gao, Tengfei Yao, Tengfei Yao   +6 more
doaj   +1 more source

Study on Creep Mechanical Properties of Non-Water Reacting Polyurethane Grouting Material

Advances in Materials Science and Engineering, 2022
Non-water reacting polyurethane is a new type of grouting material for support reinforcement and emergency rescue, whose creep mechanical behavior is directly related to the stability and safety of the reinforcement project.
Heng Liu, Mingyang Ren, Mingsheng Shi, Dengping Hu, Jianuo Tan   +4 more
doaj   +1 more source

The Use of Polyurethane Injection as a Geotechnical Seismic Isolation Method in Large-Scale Applications: A Numerical Study

Geosciences, 2021
This paper analyses the effect of polyurethane injections on the seismic surficial response of cohesionless soils. For this purpose, dynamic finite element numerical analyses were performed through GiD + OpenSees. Both the soil and the composite material,
Michele Placido Antonio Gatto, Valentina Lentini, Francesco Castelli, Lorella Montrasio, Davide Grassi   +4 more
doaj   +1 more source

High strength, medium density molded foam [PDF]

, 1972
Toluene diisocyanate-based polyurethane produces molded-to-size foam products.
Fender, J. R.
core   +1 more source

Nanolayer‐Encapsulated Stretchable Liquid‐Metal Sheets for Thermal Management

Advanced Functional Materials, EarlyView.
A stretchable liquid metal sheet with both high thermal conductivity and mechanical flexibility is developed. Its trilayer structure, comprising copper‐particle‐dispersed gallium liquid metal encapsulated by styrene‐butadiene‐styrene nanosheets, shows 40.4 W m−1 K−1 conductivity, elongation exceeding 200%, and retention of 96% of its initial ...
Daisuke Kuse, Yudai Kaneko, Ryohei Fujita, Tatsuhiro Horii, Daishi Shiojiri, Yuta Ozawa, Kyohei Nagatake, Tamami Takano, Yutaka Isoda, Aoi Koishikawa, Takashi Goto, Ai Ueno, Shoji Maruo, Kazuhide Ueno, Toshinori Fujie, Hosei Nagano, Hiroki Ota   +16 more
wiley   +1 more source