Preparation and study of intumescent flame retardant poly(butylene succinate) using MgAlZnFe‐CO₃ layered double hydroxide as a synergistic agent

Abstract

Intumescent flame retardant consisting of ammonium polyphosphate and melamine, and MgAlZnFe-CO 3 layered double hydroxides (LDHs) prepared by the constant pH coprecipitation method, were added to poly(butylene succinate) (PBS) via melt blending to obtain novel intumescent flame retardant poly(butylene succinate) (IFR-PBS) composites. A study on the effect of MgAlZnFe-CO 3 LDHs on the mechanical, thermal, and flame retardancy properties of IFR-PBS composites was investigated. It was revealed that IFR-PBS composites exhibited both excellent flame retardancy and antidripping properties when the content of MgAlZnFe-CO 3 LDHs was 1% (the total loading of flame retardant was 20%), for a goal of vertical flammability (UL-94) V-0 rate and a limiting oxygen index value of 35. The results showed that a suitable amount of MgAlZnFe-CO 3 LDHs had a noticeable synergistic effect on IFR-PBS composites. Importantly, tensile strength and flexural strength were improved by the presence of MgAlZnFe-CO 3 LDHs.

Properties and characteristics of polylactide blends: Synergistic combination of poly(butylene succinate) and flame retardant

“…Liu et al studied the intumescent flame retardant on PBS using MgAlZnFr‐CO 3 layered double hydroxide. They reported the high LOI value of neat PBS at about 24% and no rating in UL‐94 measurement . The burning rates of the PLA blends were in the range of 174 to 339 mm/minute.…”

“…It could be inferred that the addition of PBS increased the thermal resistance of the blends. According to the study of Liu et al, the thermal degradation temperature of PBS was about 394°C, plainly higher than neat PLA . As a result, the thermal stability of PLA/PBS blends was improved when the PBS contents increased because of the addition of a higher thermal resistance phase.…”

Enhanced dispersibility and uniform distribution of iron phosphonate to intensify its synergistic effect on polypropylene‐based intumescent flame‐retardant system

“…To solve this issue, many studies have investigated the synergistic flame-retarded effect by introducing a synergist into IFR/polymer composites. [8][9][10][11][12][13][14][15] The addition of a synergist has usually resulted in the loading of an IFR required decreasing from about 25-30 wt% to about 20-25 wt% to achieve the V-0 rating of UL-94. The greater the effect of the synergist the lower the loading of additives, for example, IFR, needed to achieve the same flame retardancy.…”

Layered double hydroxides/reduced graphene oxide nanocomposites with enhanced barrier properties

“…Nanofillers , layered double hydroxides (LDHs), silica (SiO 2 ), montmorillonite (MMT), carbon nanotubes (CNTs) and graphene oxide (GO), have been more widely used as modifier of polymers probably because their easily available and high performance. Therefore, numerous efforts are focused on the use of clay and carbonaceous materials to obtain novel and high‐performance nanocomposites.…”