STUDY OF POLYMER OXYGEN-FREE DECOMPOSITION PROCESS WITH THE PURPOSE TO PRODUCE CARBON-HYDROGEN CONTAINING SUBSTANCE (CHS)

Purpose of the present paper is to examine the oxygen-free decomposition process of polyvinyl alcohol PVA, polypropylene РР and phenol-formaldehyde resin under heating and to obtain data for the quantity of the pyrolysis residue. The thermal decomposition of polyvinyl alcohol PVA, polypropylene РР and phenol-formaldehyde resin has been studied using conventional thermogravimetric technique under vacuum and argon atmosphere at several heating rates between 2 and 12°C/min. Our results shows that the solid residue of the PVA heated in argon medium at 350 °С and holding for 30 min is up to 14% and in vacuum - to 10% of the initial weight. The polypropylene completely decomposes at heating up to 600°С in argon and in vacuum and it is not suitable for CHS production. The solid residue of phenol-formaldehyde resin heated to 700°С in argon is up to 23% and in vacuum – to 16% of the initial weight.

• Dimitar Teodosiev
• Gyurov
• Jordan Georgiev
• Nartzislav Petrov

• Технические науки. Промышленность
• Физико-математические науки
• Социальные (общественные) науки
• Естественные науки