UCT Specialties, Manufacturer of the Petrarch® Line of Specialty Silicones, is Used as Standard for Linear Viscoelelastic Crosslinked Silica Reinforced Poly(dimethyl-siloxane) Rubber Study

Experimental  work by Palade, et.al,. recently published in Materiale Plastice (50, 1, 2013) utilized two UCT Specialty products in their studies.  The vinylmethylsiloxane copolymers, PS 424 and PS 426 (trimethylsiloxy-terminated, dimethylsiloxane, vinylmethylsiloxy copolymers) were compounded with two different silica samples on a roll mill.  The objective of the study was to better understand the influence of the material microstructure on the shear thermoviscoelastic behavior using temperatures above T_g.  Silica was introduced to the samples at 0%, 10% and 20% weight loadings.  The results of the study showed that after aging for up to 30 days at 200°C no significant influence on the viscoelastic behavior of the polymers was observed and that particle migration was not contrary to past experimental trials.  It was also stated that extended cure times would have to be used to better define the parameters of the experiments.

UCT Specialties is the manufacturer of Petrarch® brand high quality specialty silanes, reactive silicones, catalysts and coatings for a variety of manufacturing markets.