Effect of Ammonium Polyphosphate on Flame Retardancy, Thermal Stability, and Mechanical Properties of Unsaturated Polyester/Phenolic/Montmorillonite Nanocomposites. Issue 3 (23rd September 2015)

• Record Type: Journal Article
• Authors: Hassan, Azman; Hau, Lee Yong; Hasan, Mahbub
• Is Part Of: Advances in polymer technology. Volume 36:Issue 3(2017)
• Page Start: 278
• Page End: 283
• Publication Date: 2015-09-23
• Subjects: Ammonium polyphosphate -- Flame retardance -- Mechanical Properties -- Thermal properties -- Unsaturated polyester nanocomposites; Plastics -- Periodicals; Polymers -- Periodicals; 668.9
• DOI: 10.1002/adv.21605
• Languages: English
• ISSNs: 0730-6679

Abstract

ABSTRACT: In present research, the effect of ammonium polyphosphate (APP) content on flame retardancy, thermal stability, and mechanical properties of unsaturated polyester resin/unsaturated phenolic resin/montmorillonite (MMT) nanocomposites were studied. Nanocomposites were prepared via in situ mold casting technique. Flame retardancy of the nanocomposite was investigated through the UL 94 vertical burning test and limiting oxygen index (LOI) analysis. Thermogravimetric analysis (TGA) was conducted to measure thermal properties, whereas flexural and impact tests were carried out to determine mechanical properties of nanocomposites. Nanocomposites with 30 phr APP achieved the flammability rating of V‐1 and LOI of 29.2%. TGA results showed that nanocomposites with 30 phr APP had the highest thermal stability. Nanocomposite prepared with 3 phr MMT had the highest flexural strength, flexural modulus, and impact strength. Thus the best balance between flame retardancy, thermal stability, and mechanical properties was achieved with MMT and APP content of 3 and 30 phr, respectively.