Particle Dispersibility Improvement of Polyester Fibers with a New Line Injection

Abstract

In order to develop a new line injection system for spin draw yarn (FD SDY) fibers, the effect of various parameters in extrusion and melt line conditions on the dispersion and distribution of TiO2 particles within FD PET fibers was investigated. As a result, the dispersibility of TiO2 particles in a PET matrix is found to depend on the particle size and its surface characteristics. Surface modification of TiO2 by dimethyl polysiloxane resulted in the improved dispersibility and affinity of TiO2 particles in the PET matrix. Especially, residence time, mixing temperature, and mixing shear rate in the new line injection system under the SDY spinning process were very important parameters to minimize the agglomeration of TiO2 particles. The FD SDY prepared by the new line injection system was superior to those using the polymerization process and the conventional masterbatch chip dosing process in the color-L and color-b values of the fibers.

Preparation and Application of Polymer-Composited Yarn and Knit Containing CNT/Ceramic

“…The LH-Knit was prepared using a circular knitting machine, which is particularly economical for knitting the regular single jersey because its 24-or-higher-gauge knitting enables mass production in a short period of time (Park, 2012; Park et al, 2010). A circular knit, which has a structure where one strand of the thread forms a stitch, has a high shape-modification rate and high elasticity compared to woven fabrics.…”

“…The coupling agent increases the coherence between the functional particles and PET resin, so that the fastness and evenness may be increased. Polymerization of the materials with the coupling agent at a concentration higher than the original preparation concentration in MB may increase the dispersity, spinnability, and uniformity of the particle, dispersing the particles more uniformly (Park, Kim, Jin, & Park, 2010).…”

Characterization of Cleanroom Dry Wipers for Trace Metal Contaminations

“…The relatively high levels of antimony, approximately 150 microgram of Sb 2 O 3 per gram of wiper (ppm) for all three wipers tested, might attribute to the antimony catalyst used in the fiber spinning process. 11 Concentrations for other trace metals from the ashing method varied by wipers. However, there were some common characteristics across all wipers tested.…”