Recent developments in fire retardancy of polybutylene succinate

Highly flame‐retardant and low toxic polybutylene succinate composites with functionalized BN@APP exfoliated by ball milling

“…1 According to a report, the global market for bioplastics is predicted to increase from 1.6 million metric tons in 2018 to 2.7 million metric tons by 2023. 2 Among the many bio-based polymers, polybutylene succinate (PBS) has been widely used in packaging, 3,4 agriculture, 5,6 electrical and electronic technologies, 7,8 transportation, 9 and medical supplies. 10 This is attributed to the biodegradability and good mechanical properties of PBS 11 (similar to polypropylene and polyethylene 12 ).…”

“…13 However, it is noteworthy that the limiting oxygen index (LOI) of pure PBS is as low as 21%-24%, and PBS is easily flammable. 2 A large amount of toxic smoke and droplet are produced in the combustion process, which brings serious harm to fire safety, its high flammability greatly restricts its application. 14 Furthermore, many studies have concluded that adding flame-retardants to polymers is an effective way to prepare flame-retardant polymers.…”

“…Therefore, from the perspective of environmental friendliness, the advantages of biodegradable plastics are very obvious 1 . According to a report, the global market for bioplastics is predicted to increase from 1.6 million metric tons in 2018 to 2.7 million metric tons by 2023 2 . Among the many bio‐based polymers, polybutylene succinate (PBS) has been widely used in packaging, 3,4 agriculture, 5,6 electrical and electronic technologies, 7,8 transportation, 9 and medical supplies 10 .…”

“…With the expansion of PBS application, the flame‐retardant and fire safety performance of materials have attracted more and more attention 13 . However, it is noteworthy that the limiting oxygen index (LOI) of pure PBS is as low as 21%–24%, and PBS is easily flammable 2 . A large amount of toxic smoke and droplet are produced in the combustion process, which brings serious harm to fire safety, its high flammability greatly restricts its application 14 .…”

Intumescent polybutylene succinate: Ethylenediamine phosphate and synergists

“…Generally, a typical IFR system for polyesters includes acid source (e.g., ammonium polyphosphate), blowing agent (e.g., melamine), and/or charring agent [13][14][15][16]. Currently, ammonium polyphosphate and melamine phosphate are the most commonly used acid sources in intumescent PBS systems [17]. However, they have to be incorporated at relatively high loading (more than 20%) to meet the conventional fire safety standards [18][19][20].…”