مشروع البحث: MECHANICAL, THERMAL, AND FLAMMABILITY PROPERTIES OF RIGID POLYURETHANE FOAM-FILLED GRAPHENE/ALUMINIUM HYDROXIDE FLAME RETARDANT
| dc.contributor.advisor | DR. ZURINA BINTI MOHAMAD | |
| dc.date.accessioned | 2026-06-08T09:57:54Z | |
| dc.date.available | 2026-06-08T09:57:54Z | |
| dc.description | The incorporation of ATH enhanced the compressive strength, thermal stability, and flame-retardant performance, with 30 phr ATH yielding a balanced compressive strength of 5.45 kPa, a maximum degradation temperature (Tmax) of 306 °C, and superior flammability properties (V-0 rating in the UL-94 V test and a LOI of 20%). Incorporating 1 pphp of SIL has significantly improved the cell structure, resulting in an 80% enhancement in compressive strength for ATH-filled RPUF. The silicon surfactant also improved the dispersion and close cell structure of GNP-filled RPUF and hybrid RPUF samples. Furthermore, the introduction of GNP improved both the compression strength and thermal stability of RPUF, with 2.5 phr GNP being identified as the optimal content. Hybrid RPUF samples containing GNP displayed LOI values between 21% and 23%, with 2.5 phr and 3.0 phr GNP passing the UL-94 test with a V-0 rating. These hybrid composites exhibited substantial improvements in thermal stability, achieving Tmax values ranging from 538 °C to 592 °C. Overall, the present study demonstrated that the synergistic use of ATH, SIL, and GNP in RPUF produces hybrid RPUF with enhanced mechanical, thermal, and flame-retardant properties. | |
| dc.description.abstract | The increasing need for high-performance, environmentally friendly flame retardant materials has spurred research into novel formulations for rigid polyurethane foam (RPUF), which is widely used for insulation and other applications in the construction, automotive, and aerospace industries. This study investigates the synergistic effects of alumina trihydrate (ATH) and graphene nanoplatelets (GNP) as flame retardants in RPUF. RPUF was formulated with varying concentrations of ATH. Silicone (SIL) surfactant (0.5–3 pphp) was added into RPUF/ATH samples to stabilize the RPUF cell structure. Afterward, GNP was introduced into the silicon-stabilized RPUF containing ATH, creating a hybrid RPUF designed to improve specific properties. The RPUF and hybrid RPUF were fabricated via the one-shot foaming method. The compressive strength, density, closed-cell content, morphological, thermal and flammability properties of all RPUF samples were examined. Underwriter laboratories (UL-94 V) and limiting oxygen index (LOI) were employed to analyse the flame-retardant properties of the RPUF. | |
| dc.identifier | 1282 | |
| dc.identifier.uri | https://dspace.academy.edu.ly/handle/123456789/2213 | |
| dc.subject | POLYURETHANE FOAM-FILLED GRAPHENE/ALUMINIUM | |
| dc.title | MECHANICAL, THERMAL, AND FLAMMABILITY PROPERTIES OF RIGID POLYURETHANE FOAM-FILLED GRAPHENE/ALUMINIUM HYDROXIDE FLAME RETARDANT | |
| dspace.entity.type | Project | |
| project.endDate | 2025 | |
| project.funder.name | هندسة كيميائية | |
| project.investigator | عائشة الهادي علي ابوسنينه | |
| project.startDate | 2024 |