Surface Modification by the DBD Plasma to Improve the Flame-Retardant Treatment for Dyed Polyester Fabric

Abstract

In the first part of the study, dyed polyester fabric was treated with a dielectric barrier discharge (DBD) plasma at 1 W/cm2 for 15, 30, 60 and 90 s. The wicking height, tensile strength and color of the control and plasma treated fabrics were measured. Results show that the fabric capillary increases with plasma treatment time up to 90 s. However, plasma treatment time longer than 60 s caused an obvious color change and decrease in tensile strength of fabric. Plasma contact time should be such that plasma can improve the hydrophilicity of the fabric and adversely affect the properties of the fabric as little as possible. Thus, the suitable plasma contact time should be less than 60 s. Based on these results, in the second part of the study, three different time levels (15, 20 and 30 s) were selected for plasma pretreatment of this fabric. The plasma-treated fabric was then padded with the flame retardant (FR) (CETAFLAM PDP 30), dried and finally cured at 190 °C for 120 s. The limited oxygen index (LOI) of FR fabrics and the vertical fire characteristics of FR fabric after being washed 5 times also were measured. Comparison of these results with those of FR fabrics without plasma pretreatment shows that plasma pretreatment improves the fabric’s flame retardancy and FR durability. Moreover, it also reduces the heat shrinkage of PET fabric due to high temperature curing. The scanning electron microscopy (SEM) images of the fabric after plasma treatment and FR treatment and the energy-dispersive spectroscopy (EDS) spectrum of the fabric are consistent with the above results.

Novel thermally insulated ultra‐lightweight fireproof and high impact resistance advanced hybrid composite

“…Similar result was also observed in PET fabric. [ 25–27 ] The surface modification on polymer and fiber essentially increases time of ignition resulting in barrier coating the polymer surface. The surface‐treated ABPBI showed an increase in LOI value due to the effect of nitrogen plasma treatment on the surface.…”

“…Similar result was F I G U R E 9 TGA of silicone rubber also observed in PET fabric. [25][26][27] The surface modification on polymer and fiber essentially increases time of ignition resulting in barrier coating the polymer surface.…”

Simultaneous Treatment of Both Sides of the Polymer with a Conical-Shaped Atmospheric Pressure Plasma Jet

“…Its versatility in modifying the surface of polymers without changing the bulk properties is worth mentioning, in addition to being suitable for most polymers that are sensitive to high temperatures [ 6 , 7 , 8 ]. Furthermore, plasma processes can take place in an open or controlled environment, with the treatment time varying from a few seconds to several minutes, depending on the configuration of the device used [ 8 , 9 , 10 , 11 , 12 ]. It is worth mentioning that this process can be carried out continuously in a line of production or individually [ 13 , 14 ].…”

“…It is worth mentioning that this process can be carried out continuously in a line of production or individually [ 13 , 14 ]. Among the NTAPP devices, dielectric barrier discharge (DBD) is the most widely used [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. A significant advantage of DBD over other devices that generate electrical discharges is the higher electron density induced by micro-discharges caused by a large number of tiny current filaments that pass through the dielectric material covering one or both electrodes [ 21 , 22 ].…”

Recent Advances in Functional Polymer Materials for Energy, Water, and Biomedical Applications: A Review

“…Some polymers are active and functional in nature, but others need to be modified to improve their impact and functionality. Several recent methods and techniques have been developed for the functionalization of the surfaces of synthetic and natural polymers [8][9][10][11][12]. Indeed, the terminal groups of the surface of a polymer could be linked or modified by reactive functional groups.…”