Triple‐faced polypropylene: Fire retardant, thermally stable, and antioxidative

Abstract

A halogen‐free nitrogen‐rich additive was used to make polypropylene (PP) prepared for three different missions: fire retardancy, thermal stability, and antioxidative properties. The prepared additive was composed of a cyclodextrin, a nanohydroxyapatite, and a poly[[6‐[(1,1,3,3,‐tetramethylbutyl)amino]‐1,3,5‐triazine‐2,4‐diyl][(2,2,6,6‐tetramethyl‐4‐piperidinyl)imino]‐1,6‐hexanediyl[2,2,6,6‐tetramethyl‐4‐piperidinyl)imino] (SABO®STAB) integrated into a unique molecule, namely, BSDH. Fire retardancy performance of BSDH in PP was compared with that of 9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO) commercially available additive in terms of cone calorimeter results. Thermal stabilities of PP/BSDH and PP/DOPO composites were compared by changes observed in pyrolysis activation energy values measured in thermogravimetric analysis under nitrogen atmosphere at various heating rates. Flame retardancy of PP/BSDH composite was reflected in a drop in the peak of Heat Release Rate by ca. 31% with respect to neat PP. Very interestingly, the results show that BSDH additive retarded thermal oxidation of PP macromolecular chains when compared with DOPO commercially available flame retardant, as signaled by a rise in oxidation induction time value as well as an increased early‐stage activation energy needed for thermal decomposition of PP in the presence of BSDH. J. VINYL ADDIT. TECHNOL., 25:366–376, 2019. © 2019 Society of Plastics Engineers

Flame Retardant Polypropylenes: A Review

“…Symbols are indicative of different types of bio-based flame retardant used. Here: ■ CD-10 [ 135 ], HAandCD-FR-10 [ 15 ], m-lig-20 [ 136 ], PHPI-FR-15, PHPI-FR-18, PHPI-FR-20, PHPI-FR-25 [ 137 ], BC-15, BC-25, BC-30, BC-35 [ 138 ], Wool-40, m-wool-40, m-wool-40, m-CF-40 [ 28 ], CF-40, m-CF-40, m-CF-40 [ 139 ].…”

“…Therefore, a huge number of PP products, including fibers, films, sheets, textiles, pipes, and profiles, have been developed and used in the automotive, electrical and electronic, packaging, and construction industries [ 11 , 12 , 13 , 14 ]. On the other hand, due to the inherent flammability, the use of flame-retardant additives in PP is necessary to minimize the risk of fire [ 15 ]. Different types of flame retardants have been used in PP including minerals, phosphorus-based, nitrogen-based, and intumescent [ 16 , 17 , 18 ].…”

Thermoplastic polyurethane (TPU) modifier to develop bimodal cell structure in polypropylene/TPUmicrocellular foam in presence of supercriticalCO2

“…[7][8][9] Polypropylene (PP) is one of the most widely used thermoplastics in multifarious areas consisting of domestic appliance, daily necessity, and electronics, in view of its high heat distortion temperature, good tensile and yield strength, excellent stiffness, and super chemical resistance. [10][11][12] As a result, PP has received increasing attention as a suitable substitute for polyethylene and polystyrene (PS). However, most of common PP foams have showed poor cellular morphology and unsatisfied foaming parameters in consequence of their low melt strength, high crystallinity and crystallization rate, linear molecular chain architecture and narrow molecular weight distribution.…”

Calcium carbonate and ammonium polyphosphate flame retardant additives formulated to protect ethylene vinyl acetate copolymer against fire: Hydrated or carbonated calcium?

“…[1,2] As a key performance characteristic, flame retardancy has also been the subject of investigations. [3][4][5] Ethylene-vinyl acetate copolymer (EVA) has widely been considered in the industry thanks to its appropriate physical and mechanical properties. [6] However, due to its high flammability, there was a need for the use of suitable additives prior to the consideration of EVA for applications where high flameretardant properties were of importance.…”