E3S Web Conf.
Volume 263, 2021XXIV International Scientific Conference “Construction the Formation of Living Environment” (FORM-2021)
|Number of page(s)||9|
|Section||Modern Building Materials|
|Published online||28 May 2021|
Influence of the Expandable Graphite on the Thermal properties of a Rigid Polyurethane Foam for construction
1 Kazan Federal University, Naberezhnye Chelny Institute, 423810 Naberezhnye Chelny, Russia
2 Moscow State University of Civil Engineering, Yaroslavskoe shosse, 26, Moscow, 129337, Russia
* Corresponding author: firstname.lastname@example.org
In this paper, low-combustible composites were made by adding 0.8-25 wt% of expandable graphite to rigid polyurethane foams (PUF) to ensure effective and safe usage of building materials made of PUFs. Thermal gravimetric analysis (TGA) was used to study thermal properties and effectiveness of the resulting low-combustible composites in construction. The analysis of TGA curves of the studied composites can be interpreted as a two-stage process: acid-catalyzed degradation of PUF and formation of an intumescent char layer. A dense intumescent layer can provide an effective prevention of heat transfer. The paper showed that the addition of 25 wt% of expandable graphite to PUF composite improved the thermal stability by 8 °С, as compared to starting PUF, while the residue was 36.2 wt% at 600°С, which was higher by approximately 16 wt% than the residue of starting PUF. So, the sample with 25 % loading of expandable graphite in rigid PUF composite showed the best thermal characteristics.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.