A novel triazine-rich polymer wrapped MMT: synthesis, characterization and its application in flame-retardant poly(butylene terephthalate)

Abstract

A novel flame retardant (PTAC-MMT) was prepared by wrapping montmorillonite (MMT) with poly(2,4,6-triallyloxy-1,3,5-triazine) (TAC) via in situ polymerization, and its structure and properties were characterized by Fourier transformed infrared (FT-IR) spectroscopy, 1 H nuclear magnetic resonance ( 1 H NMR) and 13 C NMR, transmission electron microscopy (TEM), X-ray powder diffraction (XRD) and thermogravimetric analysis (TGA) measurements. The PTAC-MMT and aluminum diethylphosphinate (AlPi) were then incorporated into poly(butylene terephthalate) (PBT) to improve the flame retardancy.The sample containing 1.67 wt% PTAC-MMT and 8.33 wt% AlPi had a LOI value of 36.4% and achieved UL94 V-0 classification. The wrapping flame retardants exhibited excellent anti-dripping effect in PBT composite. This work could provide a novel way to prepare modified MMT and the as-prepared flame retardants.

An advancement in the synthesis of nano Pd@magnetic amine-Functionalized UiO-66-NH2 catalyst for cyanation and O-arylation reactions

“…The FT-IR spectrum of magnetic UiO-66 is shown the characteristic vibrational modes including 1573 cm −1 for COO− asymmetric mode, 1390 and 1433 cm −1 for COO− symmetric modes, 3361 cm −1 for NH 2 symmetric mode, 3467 cm −1 for NH 2 asymmetric mode, and 1259 cm −1 for C−N vibrational mode 17 . The magnetic UiO-66-NH 2 was modified by TCT and 5-phenyl tetrazole at the same time and the strong characteristic band of triazine ring skeleton is observed at around 1570 cm −1 38 and 5-phenyl tetrazole ring show C=N and N=N stretching vibrations at 1450 and 1530 cm −1 39 which these bands overlap with the peaks of the magnetic UiO-66-NH 2 . The peak at 3435 cm −1 shows two branches related to stretching mode of NH 2 groups which transformed to one broad peak related to NH groups after modification.…”

The effect of Tris‐phosphaphenanthrene based phosphonate on the flame retardance, thermal decomposition, and crystallization of bio‐based poly(lactic acid)

“…Due to the high flame-retardant efficiency and low toxicity, a large amount of researches is focused on the nonhalogenated flame retardants (FRs) especially phosphorous containing FRs up to date. [16][17][18][19][20][21] Physically blending flame retardant are the major strategies to enhance flame retardance of polymers. [22][23][24] Zhang et al 23 adopted plantderived diphenolic acid as the feedstock to synthesize a novel multifunctional polyphosphate (PPD) and served it to improve the flame retardance and UV protection capability of PLA.…”

The Impact of Artificial Marble Wastes on Heat Deflection Temperature, Crystallization, and Impact Properties of Polybutylene Terephthalate

“…Polybutylene terephthalate (PBT) is well known as one of the five most commonly used plastics due to its remarkable comprehensive properties, such as its excellent mechanical properties, corrosion resistance, and electrical properties. As a result, it is widely used in electronics and electrical appliances, the automobile industry and its related machinery, instruments, and household appliances [ 18 , 19 , 20 , 21 , 22 ]. However, its disadvantages of low heat deflection temperature and high impact sensitivity limit its development for some applications and require significant improvement [ 23 , 24 , 25 , 26 , 27 ].…”