Properties of poly(vinyl chloride) incorporated with a novel soybean oil based secondary plasticizer containing a flame retardant group

Abstract

A novel bio-based plasticizer containing flame retardant groups based on soybean oil (SOPE) was synthesized from epoxidized soybean oil (ESO) and diethyl phosphate through a ring-opening reaction. PVC blends plasticized with ESO and SOPE were prepared, respectively. Properties including rheological behavior, thermal stability, flame retardant performance, mechanical properties of PVC plasticized with ESO and SOPE were carefully studied. The results showed that the plasticized PVC blends indicated better compatibility, thermal, and mechanical properties. As a novel bio-based plasticizer containing flame retardant groups, the TGA data indicated that the thermal degradation temperature of PVC blends plasticized with SOPE could reach to 275.5 C. LOI tests and SEM indicated that the LOI value of PVC blends could increase from 24.2 to 33.6%, the flame retardant performance of SOPE was put into effect by promoting polymer carbonization and forming a consolidated and thick flame retardant coating quickly, which is effective to prohibit the heat flux and air incursion. The enhancement in flame retardancy will expand the application range of PVC materials plasticized with SOPE.

Design and synthesis of a castor oil based plasticizer containing THEIC and diethyl phosphate groups for the preparation of flame-retardant PVC materials

“…These protons appeared to be stronger than that seen in THEIC-MR, and the absorption peak at 2.6 ppm corresponded to the protons of -(CH 2 ) n -in the THEIC-MR phosphate. 19,20 In addition, the absorption peak at 3.6 ppm was weaker than that of THEIC-MR, and all of the results indicated that THEIC-MR-phosphate was obtained.…”

“…18 In addition, a soybean oil based phosphate ester (SOPE) was prepared using the same ame retardant group. 19 All three kinds of vegetable oil based ame retardant plasticizers improved the thermal stability and ame retardancy of the PVC materials. However, the mechanical properties of the PVC materials gradually weakened with the addition of these plasticizers because many of the hydroxyl groups connected to the chemical structure of the plasticizers and reduced the plasticizing effect on the PVC.…”

The effect of maleinized linseed oil as biobased plasticizer in poly(lactic acid)‐based formulations

“…They can readily be converted into their corresponding epoxidized oils by epoxidation, leading to materials with potential use as biobased plasticizers and matrices for green composites. Several epoxidized vegetable oils such as epoxidized linseed oil, epoxidized soybean oil (ESBO), epoxidized castor oil, epoxy octyl stearate and epoxidized cottonseed oil have been reported as environmentally friendly plasticizers for a wide variety of polymers . The use of monomeric and polymeric plasticizers has also been reported in the last decade.…”

Preparation and properties of an efficient smoke suppressant and flame‐retardant agent for thermoplastic polyurethane

“…CO 2 absorption peak hardly existed in pure TPU, while not in TPU1. The phenomenon proved that the composite material produced a large amount of CO 2 gas in the early stage of pyrolysis, which played a role in the early stage of combustion and inhibited the further development of the combustion process . H 2 O absorption range was about 360–400°C, ahead of 60°C compared with pure TPU, which was good for flame retardancy.…”

“…However, to a certain extent, its flammability, molten dripping nature and its potential to produce large amount of smoke and toxic gas during its burning have greatly increased the risk of fire hazard and limited its broad applications. This suggests that it is important to improve the smoke suppression and flame‐retardant properties of TPU . It has made great progress in the flame retardant properties of TPU at present.…”