Abstract:

The exceptional diversity of dispersed systems and their significant applied value predetermine the need to study their properties and develop methods for the physicochemical control of these properties at various stages of the technological process for producing and processing dispersed systems. The properties of composite bituminous materials can be regulated in accordance with the basic principles of physicochemical mechanics by means of targeted regulation of their spatial dispersed structure through changes in the size of the dispersed phase particles [1,2,3,4,5,6,7,8]. According to modern concepts, oil and petroleum products are considered to be complex polymolecular dispersed systems that differ in the ratio of components that make up supramolecular structures and solvation shells forming a “complex structural unit” (CSU) [9,10,11,12]. The association of molecules and the formation of supramolecular structures of NDS occur due to the intermolecular interaction forces between the reacting molecules. One of the most widely used methods for regulating the colloidal‑chemical dispersity of bituminous materials is the technology of compounding with high‑molecular‑weight compounds [13, 14, 15, 16], such as the elastomer – atactic polypropylene (APP), stereodisordered: [-CH2-CH(CH3)-]n. Polymer bitumen has a wide operating temperature range (the difference between the softening point and the brittleness point) – up to 100 °C (conventional bitumen up to 60 °C). When elastomers are added to bitumen, its viscosity increases and its elasticity improves.

Keywords: dispersed state of polymer systems, strength, particle size, elastomer, bituminous insulating material