Effects of magnesium hydroxides on the physical properties of a semirigid PVC used in wire coating

This is a study of ductility and smoke generation for Polyvinylchloride (PVC) with different smoke suppressants. The purpose of smoke suppressants is to minimize the amount of smoke generated during a fire. The objective of this investigation was to determine how Magnesium Hydroxide smoke suppressants compared to Alumina Trihydrate.; Four grades of Mg(OH)2 were compared against one grade of ATH. The supplied Mg(OH)2's were mined from different geographic locations which results in differences between the grades. Testing was performed to determine if these differences affected the physical and smoke generation characteristics.; The results show an inverse relationship between the physical and smoke generation characteristics. It was found that the amount of smoke generated during the tests decreased when the outer layer of the test samples was removed.; The smoke generation and physical properties were collectively analyzed to determine which specific smoke suppressant was best.