Preparation of Intumescent Flame Retardant Poly(butylene succinate) Using Fumed Silica as Synergistic Agent

Abstract

A novel intumescent flame retardant (IFR) poly(butylene succinate) (PBS) with an antidripping property using fumed silica as a synergistic agent was prepared. Ammonium polyphosphate, melamine, and fumed silica were added in PBS via melt blending. It was revealed that the flame retardant PBS exhibited both excellent flame retardance and antidripping properties when the three components of IFR coexisted at an appropriate proportion. The lowest total loading of flame retardant could be reduced to 17 wt % with the synergism of fumed silica, for the goal of vertical flammability (UL-94) V-0 rate. Scanning electron microscopy and X-ray photoelectron spectroscopy were employed to characterize the morphology and composition of residual char, respectively. The combustion properties and thermal degradation behavior of the IFR-PBS composites were fully evaluated, and the possible flame retardant mechanism was proposed.

Novel PEPA-functionalized graphene oxide for fire safety enhancement of polypropylene

“…LOI measurements and UL-94 vertical burning tests are widely used to evaluate the flame retardant properties of materials [45]. According to the results of table 2, the material without PEPA and PGO is no level in the UL-94 test and only with an LOI value of 21.…”

Surface microencapsulation modification of aluminum hypophosphite and improved flame retardancy and mechanical properties of flame-retardant acrylonitrile–butadiene–styrene composites

“…[8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] The salts of alkylphosphinate and hypophosphite are promising ame retardants for applications in engineered plastics and other heterochain polymers, such as poly(1,4butylene terephthalate) (PBT), [8][9][10] polyamide-6 (PA6), 11,12 polyamide 66 (PA66), 13 polylactic acid (PLA), [14][15][16] polyvinyl alcohol (PVA), 17 polyurethane (PU). [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] The salts of alkylphosphinate and hypophosphite are promising ame retardants for applications in engineered plastics and other heterochain polymers, such as poly(1,4butylene terephthalate) (PBT), [8][9][10] polyamide-6 (PA6), 11,12 polyamide 66 (PA66), 13 polylactic acid (PLA), [14]…”

Synthesis of poly(butylene succinate) using metal catalysts

“…It can be speculated that the increasing development of the agribusiness and investments in biorefineries will lead to more intensive use of these materials in the near future, which will also lead to cheaper raw materials and production processes [50]. Given the many interesting properties and applications of PBS resins (including the production of biomedical materials [51], agricultural film [52], packaging [53], among others [54,55]), it can also be speculated that PBS resins will constitute a large commodity market in few years. Therefore, proper understanding of the PBS synthesis must be continuously encouraged and pursued.…”