INVESTIGATION OF SOME PLASTICIZERS FOR COMPOSITE SOLID PROPELLANT BASED ON POLYVINYL CHLORIDE

Abstract

This article presents an investigation of some plasticizers for composite solid propellants. The samples are prepared from the PVC plasticized by the DOP, DOA, and a mixture of DOP/DOA with ammonium perchlorate (AP) oxidizer, aluminum (Al) powder, and iron (III) oxide (Fe2O3). Mechanical properties and thermal characteristics of the samples were determined. The results show that the characteristics of the samples meet the requirements of composite solid propellant such as elastic modulus 176.7 ÷ 202.9 MPa, deformation 28 ÷ 45 %, ignition temperature 304.8 ÷ 308.4°C and thermal stability 0.081 ÷ 0.178 ml/g. The DOP plasticizer is a better effect on plasticization than the DOA. In addition, the sample from PVC/DOA causes more loss of weight and lower thermal stability than that from PVC/DOP.