Influence Mechanical Properties BR Compound for Manufacture diaphragm of Safety Relief Valve (SRV)

Abstract

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.