Multiscale investigation on molecular structure and mechanical properties of thermal‐treated rigid polyurethane foam under high temperature

2021 ◽  
pp. 51302
Author(s):  
Yannan He ◽  
Dacheng Qiu ◽  
Zhiqiang Yu
Keyword(s):  
Molecular Structure ◽  
Mechanical Properties ◽  
High Temperature ◽  
Polyurethane Foam ◽  
Rigid Polyurethane Foam

Cell Morphology and Mechanical Properties of Rigid Polyurethane Foam

2005 ◽  
Vol 41 (3) ◽  
pp. 267-285 ◽  
Author(s):  
Michelle Cameron Hawkins ◽  
Brendan O’Toole ◽  
Dacia Jackovich
Keyword(s):  
Mechanical Properties ◽  
Polyurethane Foam ◽  
Cell Morphology ◽  
Rigid Polyurethane Foam ◽  
Morphology And Mechanical Properties

scholarly journals Influence of carbon nanotubes on mechanical properties and structure of rigid polyurethane foam

2014 ◽  
Vol 64 ◽  
pp. 012007
Author(s):  
E Ciecierska ◽  
M Jurczyk-Kowalska ◽  
P Bazarnik ◽  
M Kulesza ◽  
M Lewandowska ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Polyurethane Foam ◽  
Rigid Polyurethane Foam

scholarly journals Bio-Based Rigid Polyurethane Foam Composites Reinforced with Bleached Curauá Fiber

2021 ◽  
Vol 22 (20) ◽  
pp. 11203
Author(s):  
Sylwia Członka ◽  
Eduardo Fischer Kerche ◽  
Roberta Motta Neves ◽  
Anna Strąkowska ◽  
Krzysztof Strzelec
Keyword(s):  
Mechanical Properties ◽  
Polyurethane Foam ◽  
Cellular Structure ◽  
Cell Structure ◽  
Rigid Polyurethane Foam ◽  
Processing Times ◽  
Civil Aircraft ◽  
Viscoelastic Characteristics ◽  
Vegetable Fiber ◽  
Curauá Fiber

This study aims to evaluate the influence of using a bleached Curauá fiber (CF) as filler in a novel rigid polyurethane foam (RPUF) composite. The influence of 0.1, 0.5 and 1 wt.% of the reinforcements on the processing characteristics, cellular structure, mechanical, dynamic-mechanical, thermal, and flame behaviors were assessed and discussed for RPUF freely expanded. The results showed that the use of 0.5 wt.% of CF resulted in RPUF with smoother cell structure with low differences on the processing times and viscosity for the filled pre-polyol. These morphological features were responsible for the gains in mechanical properties, in both parallel and perpendicular rise directions, and better viscoelastic characteristics. Despite the gains, higher thermal conductivity and lower flammability were reported for the developed RPUF composites, related to the high content of cellulose and hemicellulose on the bleached CF chemical composition. This work shows the possibility of using a Brazilian vegetable fiber, with low exploration for the manufacturing of composite materials with improved properties. The developed RPUF presents high applicability as enhanced cores for the manufacturing of structural sandwich panels, mainly used in civil, aircraft, and marine industries.

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