Preparation of Metal Carboxylates and Their Stabilizing Performance under Intense High-Pressure Shear Treatment

摘要

Solid-phase synthesis of certain metal carboxylates and their effect on stabilization of polyvinyl chloride under intense high-pressure shear treatment were studied.Metal carboxylates are widely used as thermal stabilizers and lubricants in development of new materials and goods based on polyvinyl chloride(PVC)1.The main method of industrial production of metal carboxylates is the exchange reaction between aqueous solution of metal chloride or nitrate and sodium carboxylate,e.g.,stearate,at elevated temperatures.It is characterized by a large amount of waste-water,the need in additional operations to isolate target products,etc.2.In known methods of solid-phase synthesis of metal carboxylates 3,4,sophisticated and power-consuming devices with abrasive,cutting,and impact action are used.The product yields in such procedures are usually low.