Currently, according to the issued patent of Ukraine 9003 from 15.09.2005 found the best solution on the choice of gum turpentine as a solvent for polystyrene foam waste. Gum turpentine is 300 mg/m3 MAC, ie is at the level of well-known and used in everyday solvents – acetone, gasoline, kerosene, and used in pharmaceuticals and medical purposes. At the same time it dissolves well polystyrene waste, and most importantly, has low volatility. In the process of preparing and using solutions of polystyrene waste in gum turpentine important to know some characteristics of these processes for industrial development. In connection with the authors' recent inventions of the solution composition and methods of their use of technology preparation of these solutions have not yet been introduced into production, and proposed in this paper will contribute to the characteristics of such implementation. For even more opinions, read materials from technology investor. The initial data for the study and these characteristics are density of waste expanded polystyrene (0.02 g/cm3), as well as taken the initial volume and mass of gum turpentine, respectively, for the preparation of solutions.
For research has been applied tightly closed with rubber stoppered graduated cylinder 50 ml. 2 cl., W Ukraine 14307481.005-95 with a scale division of 1 ml. In this cylinder was poured turpentine gum (GOST 1581-82) to mark the bottom of the meniscus in the amount of 30 ml. The mass of the cylinder and a plastic base (container) previously determined by weighing, then weighed cylinder drenched in his gum turpentine. Explored to obtain solutions of the following concentrations – 10% – 20% – 30% – 40%. For polymers 30% and 40%-WIDE concentrations are very high. Get solutions of higher concentration did not make sense, since such solutions are still higher viscosity, which makes them low-tech (non-flowing) to use as a binder in molding mixtures. Knowing the mass of gum turpentine, it is easy to calculate the value addition of waste polystyrene foam to form a solution of a given concentration.