scholarly journals Properties of Rigid Polyurethane Foams with Blowing Agents and Catalysts

2004 ◽  
Vol 36 (5) ◽  
pp. 368-373 ◽  
Author(s):  
Kun Hyung Choe ◽  
Dong Soo Lee ◽  
Won Jin Seo ◽  
Woo Nyon Kim
Keyword(s):  
Polyurethane Foams ◽  
Rigid Polyurethane Foams ◽  
Blowing Agents

Rigid polyurethane foams moulded with new generation blowing agents

Polimery ◽  
2003 ◽  
Vol 48 (07/08) ◽  
pp. 565-567
Author(s):  
ALEKSANDER PROCIAK ◽  
MARCIN FIGURA
Keyword(s):  
Polyurethane Foams ◽  
Rigid Polyurethane Foams ◽  
Blowing Agents ◽  
New Generation

The influence of blowing agents type on foaming process and properties of rigid polyurethane foams

Polimery ◽  
2018 ◽  
Vol 63 (10) ◽  
pp. 672-678 ◽  
Author(s):  
Maria Kuranska ◽  
Aleksander Prociak ◽  
Slawomir Michalowski ◽  
Karolina Zawadzinska
Keyword(s):  
Polyurethane Foams ◽  
Rigid Polyurethane Foams ◽  
Blowing Agents ◽  
Foaming Process

Permeation Studies of CFC Alternative Blowing Agents for Rigid Polyurethane Foams

1994 ◽  
Vol 30 (2) ◽  
pp. 126-143 ◽  
Author(s):  
P.L. Bartlett ◽  
J.A. Creazzo ◽  
H.S. Hammel
Keyword(s):  
Polyurethane Foams ◽  
Rigid Polyurethane Foams ◽  
Blowing Agents ◽  
Permeation Studies

Thermal degradation behavior of rigid polyurethane foams prepared with different fire retardant concentrations and blowing agents

Polymer ◽  
2002 ◽  
Vol 43 (24) ◽  
pp. 6471-6479 ◽  
Author(s):  
Zhong Tang ◽  
M.Mercedes Maroto-Valer ◽  
John M Andrésen ◽  
John W Miller ◽  
Mark L Listemann ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Fire Retardant ◽  
Polyurethane Foams ◽  
Degradation Behavior ◽  
Rigid Polyurethane Foams ◽  
Blowing Agents ◽  
Thermal Degradation Behavior

Effect of auxiliary blowing agents on properties of rigid polyurethane foams based on liquefied products from peanut shell

2017 ◽  
Vol 134 (48) ◽  
pp. 45582 ◽  
Author(s):  
Guangyu Zhang ◽  
Qinqin Zhang ◽  
Yumin Wu ◽  
Huan Zhang ◽  
Jingqiang Cao ◽  
...  
Keyword(s):  
Polyurethane Foams ◽  
Peanut Shell ◽  
Rigid Polyurethane Foams ◽  
Blowing Agents

scholarly journals A comparison of a novel formulation of rigid polyurethane foams synthesis by hydrocarbon blowing agents

2021 ◽  
Author(s):  
Zahir Bakiri
Keyword(s):  
Thermal Resistance ◽  
Thermal Insulation ◽  
Experimental Approach ◽  
Polyurethane Foams ◽  
Excellent Performance ◽  
Simple Formulation ◽  
Rigid Polyurethane Foams ◽  
Long Term Stability ◽  
Blowing Agents

Abstract A simple formulation of rigid polyurethane foams (RPUFs) is presented for obtaining a material, with good thermal insulation and long-term stability, based on the different hydrocarbon blowing agents (HBAs). The obtained formulation is prepared from isocyanate and polyol for construction application or appliances. A method and a particular experimental approach have realized to replace hazardous blowing agents (chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs)) with other less harmful agents to improve the thermal resistance of this polymer. The obtained results are very encouraging in certain foams prepared from HBA and provide excellent performance.

Preparation and Characterization of Soybean Oil-based Flame Retardant Rigid Polyurethane Foams Containing Phosphaphenanthrene Groups

2020 ◽  
Vol 17 (10) ◽  
pp. 760-771
Author(s):  
Qirui Gong ◽  
Niangui Wang ◽  
Kaibo Zhang ◽  
Shizhao Huang ◽  
Yuhan Wang
Keyword(s):  
Soybean Oil ◽  
Flame Retardant ◽  
Chemical Structure ◽  
Cell Structure ◽  
Polyurethane Foams ◽  
Limiting Oxygen Index ◽  
Rigid Polyurethane Foams ◽  
Degradation Activation Energy ◽  
Ft Ir

A phosphaphenanthrene groups containing soybean oil based polyol (DSBP) was synthesized by epoxidized soybean oil (ESO) and 9,10-dihydro-oxa-10-phosphaphenanthrene-10-oxide (DOPO). Soybean oil based polyol (HSBP) was synthesized by ESO and H2O. The chemical structure of DSBP and HSBP were characterized with FT-IR and 1H NMR. The corresponding rigid polyurethane foams (RPUFs) were prepared by mixing DSBP with HSBP. The results revealed apparent density and compression strength of RPUFs decreased with increasing the DSBP content. The cell structure of RPUFs was examined by scanning electron microscope (SEM) which displayed the cells as spherical or polyhedral. The thermal degradation and flame retardancy of RPUFs were investigated by thermogravimetric analysis, limiting oxygen index (LOI), and UL 94 vertical burning test. The degradation activation energy (Ea) of first degradation stage reduced from 80.05 kJ/mol to 37.84 kJ/mol with 80 wt% DSBP. The RUPF with 80 wt% DSBP achieved UL94 V-0 rating and LOI 28.3. The results showed that the flame retardant effect was mainly in both gas phase and condensed phase.

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