The effect of a chemical foaming agent and the isocyanate index on the properties of open-cell polyurethane foams
Authors:
- Klaudia Kamińska,
- Mateusz Barczewski,
- Maria Kurańska,
- Elżbieta Malewska,
- Krzysztof Polaczek,
- Aleksander Prociak
Abstract
This article presents an ecological approach based on climate neutrality to the synthesis of open-cell polyurethane foams with modified used cooking rapeseed oils. Water was used as a chemical blowing agent in the amount of 20–28 wt.% in relation to the weight of the bio-polyol. The influence of water on the physical and mechanical properties of the synthesized foams was investigated. The resultant porous materials were tested for the content of closed cells, cell structure, apparent density, thermal conductivity, compressive strength, and dimensional stability. It was found that the apparent density decreased in the range of 11–13 kg/m3 when the amount of the foaming agent was increased. In the next step, a foam with a water content of 22% was selected as having the most favorable physico-mechanical properties among all the foams with various water contents. The isocyanate index of the selected foam was then changed from 0.6 to 1.1 and it was observed that the compressive strength increased by an average of 10 kPa. The thermal conductivity coefficients of the final materials with different water contents and isocyanate indices were comparable and in the range of 40–43 mW/m·K.
- Record ID
- CUTb26ea0f4ae0642218036e99215d9f23f
- Publication categories
- ;
- Author
- Journal series
- Materials, ISSN , e-ISSN 1996-1944, Biweekly
- Issue year
- 2022
- Vol
- 15
- No
- 17
- Pages
- [1-17]
- Article number
- 6087
- Other elements of collation
- fot.; tab.; wykr.; Bibliografia (na s.) - 16-17; Bibliografia (liczba pozycji) - 37; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 15, Iss. 17, Spec. Iss.
- Substantive notes
- Special Issue: Recent Advances in the Synthesis and Application of Bio-Based Foams and Aerogels
- Keywords in English
- polyurethane, open-cell foams, closed-loop economy
- ASJC Classification
- DOI
- DOI:10.3390/ma15176087 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1944/15/17/6087 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 140
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTb26ea0f4ae0642218036e99215d9f23f/
- URN
urn:pkr-prod:CUTb26ea0f4ae0642218036e99215d9f23f
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.