STUDY OF MIXTURES OF AMIDES OF SOAPSTOCK WITH POLYETHYLENE POLYAMINE AND SUNFLOWER OIL ACIDS WITH HEXAMETHYLENEDIAMINE IN DIFFERENT PROPORTIONS AS ADDITIVES TO BITUMEN USING GRAVEL

Abstract

Amides were synthesized by mixing soapstock, which is a waste of cottonseed oil, and polyethylene polyamine in different mass ratios. The reaction was carried out by stirring for 4 hours at a temperature of 140-145°C in a beaker equipped with a mixer, heater and thermometer. After obtaining the amide, the reaction product was cooled to 80°C, the necessary amount of heavy phlegm was added to it and mixed well, then it was collected in closed containers for use. At the same time, sunflower oil acid was obtained by hydrolysis, amide was synthesized with hexamethylenediamine in a mol ratio of 2:1, and the reaction was carried out in a three-necked flask equipped with a mixer, heater and thermometer. For this purpose, sunflower oil acid was first filled into a three-necked flask, a mixer and a heater were turned on, the required amount of hexamethylenediamine was added and the temperature was raised to 140°C, and the reaction was continued at this temperature for 4 hours. Compositions in three mass ratios (1:1, 1:2, 2:1) were prepared by mixing amides synthesized on the basis of soapstock polyethylene polyamine and acid of sunflower oil hexamethylenediamine. These compositions were added as an additive to bitumen using gravel in quantities of 0.4 and 0.6% and its effect on quality indicators was studied. It has been established that the quality indicators of bitumen improve significantly after the introduction of the additive. So, after adding these compounds to bitumen using gravel, its adhesive ability increases to 1 point, whereas it is 3 points. Brittleness decreases from -18 to -26, while penetration increases from 48 to 55 and tensile strength from 75 cm to 100 cm.