Mechanical and thermal properties of microchannel insulating foams comprising a multifunctional epoxy/polyhedral oligomeric silsesquioxane nanocomposite

2020 ◽  
Vol 41 (12) ◽  
pp. 5030-5042
Author(s):  
Eric D. Schmid ◽  
N. Krishnan P. Veluswamy ◽  
David R. Salem
Keyword(s):  
Thermal Properties ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Mechanical And Thermal Properties ◽  
Oligomeric Silsesquioxane

Crosslink Effects of Octavinyl Polyhedral Oligomeric Silsesquioxane on the Mechanical and Thermal Properties of Polyacrylate Nanocomposites

2012 ◽  
Vol 476-478 ◽  
pp. 402-405
Author(s):  
Chang Su ◽  
Cun Bin Zhao ◽  
Pan He ◽  
Cheng Zhang
Keyword(s):  
Fourier Transform ◽  
Thermal Properties ◽  
Infrared Spectrum ◽  
Butyl Acrylate ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Crosslinking Density ◽  
Mechanical Analysis ◽  
Mechanical And Thermal Properties ◽  
Dynamic Mechanical ◽  
Oligomeric Silsesquioxane

Poly(butyl acrylate-co-methyl methacrylate-co-octavinyl polyhedral oligomeric silsesquioxane) (OVPOSS-P(BA-MMA)) nanocomposites were synthesized by emulsion polymerization. The structures of nanocomposites were characterized by Fourier transform infrared spectrum (FTIR) and solubility experiment. It was shown that the network structures have been formed during the copolymerization. Dynamic mechanical analysis (DMA) was used to investigate the dynamic mechanical and thermal properties. The data indicate that the crosslinking density apparently affects the mechanical and thermal properties of OVPOSS-P(BA-MMA).

Synthesis and thermal properties of modified room temperature vulcanized (RTV) silicone rubber using polyhedral oligomeric silsesquioxane (POSS) as a cross linking agent

RSC Advances ◽  
2014 ◽  
Vol 4 (78) ◽  
pp. 41453-41460 ◽  
Author(s):  
Yunhui Shi ◽  
Xiaoxiao Gao ◽  
Dian Zhang ◽  
Yufeng Liu ◽  
Guangsu Huang
Keyword(s):  
Thermal Properties ◽  
Silicone Rubber ◽  
Room Temperature ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Cross Linking ◽  
Oligomeric Silsesquioxane ◽  
Rtv Silicone Rubber

Incompletely condensed tetra-silanol-phenyl-polyhedral oligomeric silsesquioxane (TOPO) was synthesized first and then copolymerized with hydroxy terminated polydimethylsiloxane (HPDMS) as a cross linking agent to prepare room temperature vulcanized (RTV) silicone rubber (TOPO–PDMS).

scholarly journals Structural Analysis of Polyhedral Oligomeric Silsesquioxane Coated SiC Nanoparticles and Their Applications in Thermoset Polymers

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Md. Reza-E-Rabby ◽  
Shaik Jeelani ◽  
Vijaya K. Rangari
Keyword(s):  
Photoelectron Spectroscopy ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Mechanical And Thermal Properties ◽  
Tem Analysis ◽  
Sic Nanoparticles ◽  
X Ray ◽  
Thermoset Resin ◽  
Transmission Electron ◽  
Xrd Techniques ◽  
Oligomeric Silsesquioxane

The SiC nanoparticles (NPs) were sonochemically coated with OctaIsobutyl (OI) polyhedral oligomeric silsesquioxane (POSS) to create a compatible interface between particle and thermoset polymer. X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) techniques were used to analyze the structure of OI-POSS coated SiC nanoparticles. These results revealed the formation of a covalent bonding between SiC and OI-POSS. The transmission electron microscopy (TEM) analysis of OI-POSS coated SiC nanoparticles has also shown the indication of attachment between these two nanoparticles. The OI-POSS coated SiC nanoparticles were further reinforced into a thermoset resin system in order to evaluate mechanical and thermal properties of nanocomposites. The flexural strength, modulus, and glass transition temperature were found to be enhanced while SiC and OI-POSS coated SiC were infused into epoxy system compared to those properties of neat epoxy resin.

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