foam formulation
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Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 934
Author(s):  
Monika Auguścik-Królikowska ◽  
Joanna Ryszkowska ◽  
Maria Kurańska ◽  
Marta Wantulok ◽  
Michał Gloc ◽  
...  

Taking into account the circular economy guidelines and results of life cycle analyses of various materials, it was proposed to use a blackcurrant pomace filler in the production process of viscoelastic polyurethane (PUR) foams intended for application as mattresses, pillows, or elements for orthopedics. Open-cell viscoelastic PUR foams containing 10–60 per hundred polyols (php) blackcurrant pomace were prepared. It was found that after introducing the filler to the PUR foam formulation, the speed of the first stage of the foaming process significantly decreases, the maximum temperature achieved during the synthesis drops (by 30 °C for the foam containing 40 php of filler compared to unfilled foam), and the maximum pressure achieved during the synthesis of foam containing 20 php is reduced by approximately 57% compared to the foam without filler. The growth time of the foams increases with increasing the amount of introduced filler; for the foam containing 60 php, the time is extended even by about 24%. The effect of the filler on the physical, morphological, mechanical, and functional performances of PUR foam composites has been analyzed. The use of 60 php as the filler reduced the hardness of the foams by approximately 30% and increased their comfort factor from 3 to 5.


Author(s):  
Jorge Alejandro TORRES-OCHOA ◽  
Nadia Renata OSORNIO-RUBIO ◽  
Orlando CORTAZAR-MARTINEZ ◽  
Victor Alfonso MORALES-NIETO

In this work, the process for the formulation of flexible polyurethane foam is presented following a design of experiments for mixtures. The proportion of polyol, diisocyanate, and crosslinker was considered as factors. The response variables considered were foaming time and reaction temperature. The result of the experiments showed that there is an area where the foam formulation is better. This zone is closed with 5% crosslinker, 50% polyol, and 45% diisocyanate, in this formulation denser foams with more uniform bubbles were obtained


2020 ◽  
Vol 8 (4) ◽  
pp. 1092-1103 ◽  
Author(s):  
Hailong Chen ◽  
Zhaomin Li ◽  
Fei Wang ◽  
Aixin Li ◽  
Silagi Wanambwa ◽  
...  

2020 ◽  
Vol 304 ◽  
pp. 112730 ◽  
Author(s):  
Hosein Rezvani ◽  
Donya Panahpoori ◽  
Masoud Riazi ◽  
Rafat Parsaei ◽  
Morteza Tabaei ◽  
...  

2019 ◽  
Author(s):  
Lukemon A. Adetunji ◽  
Amos Ben-Zvi ◽  
Alex Filstein

2018 ◽  
Vol 21 (5) ◽  
pp. 711-722 ◽  
Author(s):  
Katherine M. Hinnant ◽  
Spencer L. Giles ◽  
Arthur W. Snow ◽  
John P. Farley ◽  
James W. Fleming ◽  
...  
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