Results 11 to 20 of about 228,536 (185)
Heterogeneous silica-polyimide aerogel-in-aerogel nanocomposites
Chemical Engineering Journal, 2022 Zuzanna Kantor +12 more
openaire +3 more sources
Gels, 2021 In this work, the novel natural rubber latex (NRL) mixing was approached. The mixing process was carried out by using n-hexane as the dispersed phase of silica aerogel which acted as thermal insulation filler prior to NRL mixing.
Chayanan Boonrawd +3 more
doaj +1 more source
Silica aerogel core waveguide [PDF]
Optics Express, 2010 We have selectively filled the core of hollow photonic crystal fibre with silica aerogel. Light is guided in the aerogel core, with a measured attenuation of 0.2 dB/cm at 1540 nm comparable to that of bulk aerogel. The structure guides light by different mechanisms depending on the wavelength.
Grogan, Michael D W +3 more
openaire +2 more sources
Polymer Testing, 2023 Polyimide (PI)-silica aerogel composite aerogels with low shrinkage (3.7%), low density (0.061 g/cm3), low thermal conductivity (0.0216 W m−1 K−1), high hydrophobicity (146°) and good fire resistance were prepared by incorporating silica aerogel powders ...
Shuang Xi +6 more
doaj +1 more source
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
Improvement of Flame Retardancy of Polyurethane Foam Using DOPO-Immobilized Silica Aerogel
Frontiers in Materials, 2021 In this work, silica aerogel was modified by 9,10-dihydro-9-oxa-10-phosphaphenanthrene-1-oxide (DOPO). Then DOPO-immobilized silica aerogel nanoparticles were used as a flame retardant to prepare flame-retardant polyurethane foams.
Xin’guo Zheng +7 more
doaj +1 more source
Jurnal Teknik Kimia dan Lingkungan, 2023 Proses pengolahan minyak di Indonesia sangat menguntungkan untuk perekonomian negara. Tetapi disamping itu, terdapat hal yang meyebabkan kerugian yaitu terjadinya tumpahan minyak.
Bramantya Bramantya +3 more
doaj +1 more source
Applied Sciences, 2021 Silica aerogel possesses an ultra-low thermal conductivity by virtue of its nano-structure. Owing to the fragility of monolithic aerogel, the development and production of aerogel-based insulation materials involve the incorporation of granular aerogel ...
Fouad Ismail Ismail +6 more
doaj +1 more source
Dielectric Response of Silica Aerogels [PDF]
Defect and Diffusion Forum, 1987 The dielectric response of porous silica aerogel prepared by hypercritical drying of gels from hydrolysis of TMOS — Methanol solution have been measured between 1.6 K to 300 K and frequencies between 50 and 10 5 Hz. The ɛ' value of the porous gels is found practically constant between room temperature and 100K but smaller than of fused silica. A sharp
Da Silva, Adao A. +2 more
openaire +1 more source
Merging flexibility with superinsulation: Machinable, nanofibrous pullulan-silica aerogel composites
Materials & Design, 2018 Freeze-dried nanofibrous scaffolds are flexible, but typically have high thermal conductivities. Conversely, silica aerogel has an ultra-low thermal conductivity, but is brittle. Here, the impregnation of pullulan/PVA nanofiber scaffolds with hydrophobic
Shanyu Zhao +5 more
doaj +1 more source