Author : Zaid Ghalib Abdulkadhim

The aim of this work was to manufacture the diaphragm for Safety relief Value using Poly Butadiene Rubber(BR) high Cis grade (97%), this diaphragm use in Propane gas storage tank under conditions of 1.351 Psi pressure and -40 Co propane gas Temperature, the compositions were prepared in Laboratories Inc. Tires Babylon. The tests included the tensile, hardness, and Rheometric properties of BR compound using a vulcanization system [ASTM D3182]. Carbon black (N326) was used as a filler (40 pphr). To determine the tensile strength, M300 (tensile stress at 300% elongation) and elongation at break a tensile test device called (Tensilmete) was used According to ASTM D412, operating at strain rates of 500 mm/min. Finally, by using a device (Hardness), to determine the Hardness IRHD of BR compound. We design such compound by using diaphragm rubber suitable for low Temperature properties, and design a mould for curing the diaphragm physical and curing properties, we have made for a design compound and performance test also we have done by fitting the producing diaphragm in the work and showing a good result.

Keywords: Diaphragm, Poly Butadiene Rubber(BR), M300 (tensile stress at 300% elongation).

Article published in International Journal of Advance Industrial Engineering, Vol.3, No.1 (March-2015)