Journal article
Synergistic fire-retardancy properties of melamine coated ammonium poly(phosphate) in combination with rod-like mineral filler attapulgite for polymer-modified bitumen roofing membranes
Department of Civil Engineering, Technical University of Denmark1
Department of Health Technology, Technical University of Denmark2
Danish Technological Institute3
Department of Chemistry, Technical University of Denmark4
Center for Nanostructured Graphene, Centers, Technical University of Denmark5
A novel intumescent (carbonization, acid donor and foaming) fire retardant that mimics carbon nanotubes was introduced into bitumen roofing and characterized using cone calorimetry as the main analytical tool. The experimental results indicate that 18% (by mass) attapulgite mineral (ATTP) mixed with base bitumen decreased the peak heat release rate per unit area (pHRRPUA) by 10%.
Further, incorporation of melamine coated ammonium polyphosphate (MAPP) decreased the pHRRPUA by 52% and a mixture of these (3:1, ATTP:MAPP) decreased the pHRRPUA by 25% as compared to adding CaCO3 as a filler. The residual mass loss after the cone test was also improved with up to 3%. The indication of a positive synergistic flame retardant effect of the ATTP‐MAPP mixture is supported by thermogravimetric analysis.
The addition of this rod‐like mineral improved the general fire retardant properties of the base bitumen and increased the viscosity. Therefore, the polymer‐modified bitumen with both fire retardant and rheological properties (providing mechanical strength) is a promising novel approach in the design of bitumen roofing membranes.
Language: | English |
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Year: | 2020 |
Pages: | 966-974 |
ISSN: | 10991018 and 03080501 |
Types: | Journal article |
DOI: | 10.1002/fam.2899 |
ORCIDs: | Leisted, Rolff Ripke , Almdal, Kristoffer , Chernyy, Sergey and Jomaas, Grunde |