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Nguyen TA, Vo DK, Nguyen KTD, Tran DQ, Nguyen DM, Nguyen NT, Vu TT, Nguyen VT, Hoang D. Lightweight Biobased Polyurethane Composites Derived from Liquefied Polyol Reinforced by Biomass Sources with High Mechanical Property and Enhanced Fire-Resistance Performance. ACS OMEGA 2024; 9:19182-19192. [PMID: 38708195 PMCID: PMC11064040 DOI: 10.1021/acsomega.3c10330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 04/05/2024] [Accepted: 04/08/2024] [Indexed: 05/07/2024]
Abstract
Lightweight biobased insulation polyurethane (BPU) composite foams with high fire-resistance efficiency are interested in building effective energy and low environmental impact today. This study focuses on manufacturing lightweight BPU from liquefied bamboo polyols and biomass resources, including rice husk and wood flour. Then, they are combined with three flame retardant (FR) additives, such as aluminum diethyl phosphinate, aluminum trihydroxide, and diammonium phosphate, to improve their fire resistance performance. The physicochemical properties, microstructure, thermal stability, mechanical properties, and flame-retardant properties of the BPU composites are characterized to optimize their compromise properties. The results showed that composites with optimized FRs achieved UL94 V-0 and those with nonoptimized FRs reached UL94 HB. The limiting oxygen index exhibited that the fire resistance of BPU composites could increase up to 21-37% within FR additives. In addition, the thermal stability of BPU composites was significantly improved in a temperature range of 300-700 °C and the compressive strength of the BPU composites was also enhanced with the presence of FRs. The scanning electron microscopy observation showed an influence of FRs on the morphology and cell size of the BPU composites. The bio-PU-derived samples in this study showed significantly low thermal conductivity values, demonstrating their remarkable thermal insulation effectiveness.
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Affiliation(s)
- Tuan An Nguyen
- Faculty
of Materials Science and Technology, University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi Minh
City 700000, Vietnam
| | - Dang Khoa Vo
- Faculty
of Materials Science and Technology, University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi Minh
City 700000, Vietnam
| | - Khoa T. D. Nguyen
- Faculty
of Materials Science and Technology, University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi Minh
City 700000, Vietnam
| | - Doan Q. Tran
- Faculty
of Materials Science and Technology, University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi Minh
City 700000, Vietnam
| | - Dang Mao Nguyen
- Université
de Lorraine, LERMAB, 186 Rue de Lorraine, Cosnes-et-Romain 54400, France
| | - Ngoc Thuy Nguyen
- Faculty
of Materials Science and Technology, University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi Minh
City 700000, Vietnam
| | - Tien Trung Vu
- Faculty
of Materials Science and Technology, University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi Minh
City 700000, Vietnam
| | - Vy T. Nguyen
- Faculty
of Materials Science and Technology, University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi Minh
City 700000, Vietnam
| | - DongQuy Hoang
- Faculty
of Materials Science and Technology, University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi Minh
City 700000, Vietnam
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Chi J, Zhang Y, Tu F, Sun J, Zhi H, Yang J. The synergistic flame-retardant behaviors of soybean oil phosphate-based polyols and modified ammonium polyphosphate in polyurethane foam. JOURNAL OF POLYMER RESEARCH 2023. [DOI: 10.1007/s10965-023-03447-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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The Effect of Ash Silanization on the Selected Properties of Rigid Polyurethane Foam/Coal Fly Ash Composites. ENERGIES 2022. [DOI: 10.3390/en15062014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
According to the assumptions of the European Union, by 2050 it is planned to achieve climate neutrality. For this purpose, a document called the “European Green Deal” was established, which is a set of policies of the European Commission. One of the assumptions is a circular economy that takes into account the use of waste in subsequent production cycles. In order to meet the latest trends in environmentally friendly materials and use of waste in the production of building materials, composites of rigid polyurethane foam with 10 wt.% of waste were produced. Fly ash from coal combustion after modification was used as a filler. Three types of modifications were used: silanization, sieving, and both processes together. The silanization process was carried out for 1 and 2% silane ([3-(2-aminoethylamino)propyl]trimethoxysilane) concentration in relation to the fly ash mass. The sieving was aimed at reaching a fraction with a particle diameter below 75 µm. Six composites with modified fillers were compared and one material containing unchanged fly ash was used as a reference. A comparative analysis was carried out on the basis of surface analysis, thermal stability and physical properties. It turned out that the polyurethane materials modified fly ash silanized with 1% and 2% silane solution proved the best results in performed tests. On the other hand, the polyurethane foam containing sieved ash was characterized by the lowest flammability and the lowest emission of smoke and CO. The use of modified fly ash in technology of polyurethane foams can be a good method of its disposal and can increase the applicability of the composites.
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