Scientific and technical support of production of thermoplastic materials for road marking

Abstract

The basis of the technological evaluation of the composition of thermoplastic for road marking is the calculation of production costs associated with a particular technological scheme. In the most General form, any process for obtaining marking thermoplastics consists of the following technological operations: preparation of components; preparation of thermoplastic mixture; rastarivanie and packaging. In principle, such schemes currently exist two: a scheme that determines the production of thermoplastics in the form of a dry mechanical mixture; a scheme that determines the production of thermoplastics in the form of homogeneous fused blocks. Mixing of all components according to the first scheme in the mixer is made within three-five minutes. During mixing, liquid components are added to the mixer, if the latter are provided by the formulation. The finished mixture is discharged through a hole in the bottom of the mixer body. Production under the second scheme has a number of undoubted advantages. This is a thorough dispersion of the components that make up the thermoplastic, which ensures uniformity of its properties in any part of the batch of manufactured material. When transporting the thermoplastic in the container does not require the shelter from atmospheric precipitation and can be stored for unlimited time in unheated warehouses. From the given data it is visible that the developed compositions received as a result of performance of the present work, in comparison with analog possess the raised adhesion to asphalt concrete and elasticity in a temperature range from -10 oC to 20 oC. These indicators allow to draw a conclusion about the best resistance of the developed material in operating conditions, especially at negative temperatures.