Comfort and fatigue performance of a Soya-derived flexible PU foam for mattresses

2019 ◽  
Author(s):  
L. D’Arienzo ◽  
L. Incarnato ◽  
S. Rinaldi ◽  
P. Scarfato
Keyword(s):  
Fatigue Performance ◽  
Pu Foam ◽  
Flexible Pu Foam

Ultrasonication assisted preparation of carbonaceous nanoparticles modified polyurethane foam with good conductivity and high oil absorption properties

Nanoscale ◽  
2014 ◽  
Vol 6 (22) ◽  
pp. 13748-13753 ◽  
Author(s):  
Hengchong Shi ◽  
Dean Shi ◽  
Ligang Yin ◽  
Zhihua Yang ◽  
Shifang Luan ◽  
...  
Keyword(s):  
Polyurethane Foam ◽  
Oil Absorption ◽  
Absorption Properties ◽  
Pu Foam ◽  
Flexible Pu Foam

A compressible, conductive, oil absorptive PU foam was facilely fabricated by ultrasonication induced carbonaceous nanoparticles onto flexible PU foam.

Soy Protein Based Biodegradable Flexible Polyurethane Foam

2010 ◽  
Vol 152-153 ◽  
pp. 1862-1865 ◽  
Author(s):  
Guang Heng Wang ◽  
An Ning Zhou
Keyword(s):  
Soy Protein ◽  
Soy Protein Isolate ◽  
Protein Isolate ◽  
Compression Set ◽  
Pu Foam ◽  
Isocyanate Index ◽  
Biodegradable Polyurethane ◽  
Flexible Polyurethane ◽  
Pu Foams ◽  
Flexible Pu Foam

Soy protein based biodegradable polyurethane (PU) foams were prepared by incorporating soy protein isolate (SPI) into flexible PU foam. The effects SPI content and isocyanate index on the density, resilience, compression set, and biodegradability of the soy protein based PU foams were investigated. The results showed that, soy protein enhanced the compression set, resilience, and biodegradability of PU foams, but increased the density. Furthermore, soy protein can increase open cell proportion in the soy protein based flexible PU foams, and then regulate their properties. The density and compression set value of the soy protein based PU foams decreased with increase in isocyanate index, while the resilience increased. The biodegradability of soy protein based flexible PU foam makes it a prospective material for disposable usage.

Pristine lignin as a flame retardant in flexible PU foam

2021 ◽  
Author(s):  
dongqiao Zhang ◽  
Jia Zeng ◽  
Weifeng Liu ◽  
Xueqing Qiu ◽  
Yong Qian ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Flame Retardants ◽  
Pu Foam ◽  
Flexible Pu Foam

Typically, pristine lignin is considered limited in flame retardant area, and the phosphorylation of lignin or the combination with other effective flame retardants is required to help polyurethane achieve flame...

Low-Cycle Fatigue Performance of Buckling Restrained Braces and Assessment of Cumulative Damage under Severe Earthquakes

2018 ◽  
Vol 763 ◽  
pp. 867-874
Author(s):  
Yu Shu Liu ◽  
Ke Peng Chen ◽  
Guo Qiang Li ◽  
Fei Fei Sun
Keyword(s):  
Fatigue Life ◽  
Energy Dissipation ◽  
Structural Reliability ◽  
Low Cycle Fatigue ◽  
Engineering Application ◽  
Fatigue Performance ◽  
Cycle Fatigue ◽  
Variable Amplitude ◽  
Buckling Restrained Braces ◽  
Energy Dissipation Devices

Buckling Restrained Braces (BRBs) are effective energy dissipation devices. The key advantages of BRB are its comparable tensile and compressive behavior and stable energy dissipation capacity. In this paper, low-cycle fatigue performance of domestic BRBs is obtained based on collected experimental data under constant and variable amplitude loadings. The results show that the relationship between fatigue life and strain amplitude satisfies the Mason-Coffin equation. By adopting theory of structural reliability, this paper presents several allowable fatigue life curves with different confidential levels. Besides, Palmgren-Miner method was used for calculating BRB cumulative damages. An allowable damage factor with 95% confidential level is put forward for assessing damage under variable amplitude fatigue. In addition, this paper presents an empirical criterion with rain flow algorithm, which may be used to predict the fracture of BRBs under severe earthquakes and provide theory and method for their engineering application. Finally, the conclusions of the paper were vilified through precise yet conservative prediction of the fatigue failure of BRB.

Fatigue performance evaluation of plate and shell heat exchangers

2020 ◽  
Vol 188 ◽  
pp. 104237
Author(s):  
G.S.M. Martins ◽  
R.P.P.D. da Silva ◽  
L. Beckedorff ◽  
A.S. Monteiro ◽  
K.V. de Paiva ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Heat Exchangers ◽  
Fatigue Performance ◽  
Plate And Shell
Sign in / Sign up

Export Citation Format

Share Document