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Advanced Flame Retardant Materials

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ISBN: 9783039283507 9783039283514 Year: Pages: 190 DOI: 10.3390/books978-3-03928-351-4 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Physics (General) --- Science (General)
Added to DOAB on : 2020-04-07 23:07:09
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Recent disasters caused by the spread of fire in buildings and in transportations remind us of the importance of fire protection. Using flame-retardant materials is one important element of the firefighting strategy, which aims to prevent fire development and propagation. These materials are used in different applications, such as in textiles, coatings, foams, furniture, and cables. The development of more efficient and environmentally friendly flame-retardant additives is an active multidisciplinary approach that has attracted a great deal of interest. Studies have aimed at the development of new, sustainable, and flame-retardant additives/materials, providing high performance and low toxicity. Also studied were their properties during ageing and recycling, as well as modeling physical and chemical processes occuring before ignition and during their combustion. The development of sustainable flame retardants and understanding their modes of action provide a strong link between these topics and cover many fields from organic chemistry, materials engineering, and toxicology, to physics and mathematics.

Nanogenerators in Korea

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ISBN: 9783038976226 Year: Pages: 160 DOI: 10.3390/books978-3-03897-623-3 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-03-08 11:42:05
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Fossil fuels leaded the 21st century industrial revolution but caused some critical problems such as exhaustion of resources and global warming. Also, current power plants require too much high cost and long time for establishment and facilities to provide electricity. Thus, developing new power production systems with environmental friendliness and low-cost is critical global needs. There are some emerging energy harvesting technologies such as thermoelectric, piezoelectric, and triboelectric nanogenerators, which have great advantages on eco-friendly low-cost materials, simple fabrication, and various operating sources. Since the introduction of various energy harvesting technologies, many novel designs and applications as power suppliers and physical sensors in the world have been demonstrated based on their unique advantages. In this Special Issue, we would like to address and share basic approaches, new designs, and industrial applications related to thermoelectric, piezoelectric, and triboelectric devices which are on-going in Korea. With this Special Issue, we aim to promote fundamental understanding and to find novel ways to achieve industrial product manufacturing for energy harvesters.

Humidity Sensors. Advances in Reliability, Calibration and Application

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ISBN: 9783039211227 9783039211234 Year: Pages: 198 DOI: 10.3390/books978-3-03921-123-4 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-08-28 11:21:27
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Humidity detection has deep significance for the scientific research surrounding medical care and human performance, and the industrial development of agriculture, geography and automated instruments. This special issue aims to showcase some of the advancements in humidity sensor design and calibration, and its applications. The selected papers cover a variety of humidity sensor-related topics including material science, chemistry and industrial engineering. Through dedicated contributions from peer reviewers and the editorial team, this book aims to offers reader some insight into the field of humidity sensor development and use.

Internet of Things and Sensors Networks in 5G Wireless Communications

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ISBN: 9783039281480 9783039281497 Year: Pages: 222 DOI: 10.3390/books978-3-03928-149-7 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: General and Civil Engineering --- Technology (General)
Added to DOAB on : 2020-01-30 16:39:46
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The Internet of Things (IoT) has attracted much attention from society, industry and academia as a promising technology that can enhance day to day activities, and the creation of new business models, products and services, and serve as a broad source of research topics and ideas. A future digital society is envisioned, composed of numerous wireless connected sensors and devices. Driven by huge demand, the massive IoT (mIoT) or massive machine type communication (mMTC) has been identified as one of the three main communication scenarios for 5G. In addition to connectivity, computing and storage and data management are also long-standing issues for low-cost devices and sensors. The book is a collection of outstanding technical research and industrial papers covering new research results, with a wide range of features within the 5G-and-beyond framework. It provides a range of discussions of the major research challenges and achievements within this topic.

POSS-Based Polymers

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ISBN: 9783039219940 9783039219957 Year: Pages: 310 DOI: 10.3390/books978-3-03921-995-7 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-01-07 09:08:26
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The combination of functional polymers with inorganic nanostructured compounds has become a major area of research and technological development owing to the remarkable properties and multifunctionalities deriving from their nano and hybrid structures. In this context, polyhedral oligomeric silsesquioxanes (POSSs) have increasing importance and a dominant position with respect to the reinforcement of polymeric materials. Although POSSs were first described in 1946 by Scott, these materials, however, have not immediately been successful if we consider that, starting from 1946 and up to 1995, we find in the literature 85 manuscripts regarding POSSs; which means that less than two papers per year were published over 50 years. Since 1995, we observe an exponential growth of scientific manuscripts concerning POSSs. It is changing from an annual average of 20 manuscripts for the period 1995–2000 to an annual average of about 400 manuscripts, with an increase of 2800%. The introduction of POSSs inorganic nanostructures into polymers gives rise to polymer nanostructured materials (PNMs) with interesting mechanical and physical properties, thus representing a radical alternative to the traditional filled polymers or polymer compositions.

Keywords

direct synthesis --- grafting synthesis --- mercapto-modified --- bridged silsesquioxane --- polyhedral oligomeric silsesquioxanes --- POSS --- composites --- thermal stability --- fluorescent sensors --- nitroaromatic explosives --- polyhedral oligomeric silsesquioxane-based ionic liquids --- self-assembly behaviors --- thiol-ene ‘click’ reaction --- siloxane-silsesquioxane resins --- polypropylene --- thermogravimetry --- cone calorimeter tests --- flame-retardant mechanism --- POSS --- filler --- low refractive material --- thermal stability --- fluoropolymer --- polyhedral oligomeric silsesquioxane (POSS) --- double-decker-shaped silsesquioxane (DDSQ) --- polyimide --- thermal stability --- dielectric constant --- poly(?-caprolactone) nanocomposite --- POSS nanoparticles --- dispersion --- morphology --- thermal properties --- mechanical properties --- surface properties --- phthalonitrile polymers --- phthalonitrile-polyhedral oligomeric silsesquioxane copolymers --- cyanate ester --- blends --- thermal properties --- POSS-based copolymer --- graphene oxide --- flame retardant --- epoxy resin --- giant surfactant --- thiol–ene “click” reaction --- polyhedral oligomeric silsesquioxane (POSS) --- poly(?-caprolactone) --- aqueous self-assembly --- POSS --- ridgid polyurethane foams --- mechanical properties --- cellular structure --- bi-functional POSS --- hydrophobic modification --- thermoplastic polyurethane --- mechanical performance --- silsesquioxanes --- optoelectronics --- OLEDs --- Monomethacryloxy POSS --- lauryl methacrylate --- polymerization kinetics --- anchor effect --- octa-ammonium POSS --- sodium alginate --- hydrogels --- temperature responsiveness --- Octavinyl-POSS --- organic-inorganic crosslinking --- Si@C anode --- lithium ion battery --- mechanism analysis --- monodisperse --- nanocomposites --- damping --- POSS --- liquefied --- benzoxazine --- POSS --- organic-inorganic hybrids --- epoxy resin --- thermal properties --- flame retardancy --- n/a

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