Fire retardant and charring effect of poly(sulfonyldiphenylene phenylphosphonate) in poly(butylene terephthalate)

Add time:09/26/2019    Source:sciencedirect.com

Poly(sulfonyldiphenylene phenylphosphonate) (PSPPP) alone or together with polyphenylene oxide PPO, triphenylphosphate TPP or 2-methyl-1,2-oxaphospholan-5-one 2-oxide (OP) was mixed with poly(butylene terephthalate) (PBT). The combustion behavior of the formulations was studied by limiting oxygen index and Underwriters Laboratories UL94 test. The mechanism of the fire-retardant action of PSPPP was elucidated by thermogravimetry, IR characterization of solid residues and GC/MS characterization of the gaseous and high-boiling products. The UL94 test V-0 rating was achieved by addition of 10 wt.% PSPPP, 10 wt.% PPO and 10 wt.% OP. The fire retardant effect was attributed to promoting the char yield by involving the polymer in charring. PSPPP was shown to induce the formation of thermally stable polyarylates and phenolic functionalities in PBT. The additive is likely to react with these functionalities and crosslink macromolecules.

We also recommend Trading Suppliers and Manufacturers of diisobutyl terephthalate (cas 18699-48-4). Pls Click Website Link as below: cas 18699-48-4 suppliers

Prev:Study on the leaching of phthalates from polyethylene terephthalate bottles into mineral water
Next:Regular ArticleEnthalpies of combustion of the pyridine N-oxide derivatives: 4-methyl-, 3-cyano-, 4-cyano-, 3-hydroxy-, 2-carboxy-, 4-carboxy-, and 3-methyl-4-nitro, and of the pyridine derivatives: 2-carboxy-, and 4-carboxy-. The dissociation enthalpies of the N-O bonds)