Open AccessThermal and photo-oxidative degradation of secondary polypropylene filled with aluminosilicate microspheres
Author(s) -
М. В. Базунова,
Arthur A. Psyanchi,
Е. М. Захарова,
Ainur R. Sadretdinov,
А. Г. Хуснуллин,
В. П. Захаров
Publication year - 2020
Publication title -
butlerovskie soobŝeniâ
Language(s) - English
Resource type - Journals
ISSN - 2074-0212
DOI - 10.37952/roi-jbc-01/20-61-3-28
Subject(s) - polypropylene , materials science , aluminosilicate , composite material , polymer , compounding , degradation (telecommunications) , filler (materials) , thermal stability , molding (decorative) , composite number , polymer degradation , chemical engineering , chemistry , organic chemistry , catalysis , telecommunications , computer science , engineering
This article describes the work on the study of thermal and photo-oxidative degradation of the composition of secondary polypropylene filled with aluminosilicate microspheres. As you know, the creation of composites based on a polymer matrix filled with various substances is a good method for regulating the performance properties of the material. Inorganic fillers are of great interest and have better mechanical and thermal properties, thus have the potential to improve the mechanical and thermal properties of composites compared to matrix polymers. A promising inorganic filler is an alumosilicate microsphere. Interest in the use of ash microspheres as a filler is due to the presence of such qualities as chemical resistance, low density, high strength and low cost. The most important characteristic of the additive is to ensure thermal stability in the processing processes and when compounding with a polymer. In connection with the above, the aim of this work is to study the thermophysical parameters of polymer composites based on polypropylene filled with particles of aluminosilicate microspheres and to study the influence of ash microspheres on the laws of thermal and photo – oxidative degradation of the polymer phase. In this work, when creating a polymer composite, secondary polypropylene was used, which is a crushed material from substandard plastic products produced by injection molding. Studies of the thermophysical properties of polymer samples were carried out on the device TGA-DSC1. Thermooxidation degradation of polymer composites was performed during thermal exposure in the air at temperatures of 150, 175 and 200 оС. Photo-oxidative degradation was performed by exposing the samples under UV irradiation in the air at temperatures of 40, 60 and 90 оС. During the work, it was found that the introduction of an aluminosilicate microsphere into polypropylene has virtually no effect on changes in the melting and crystallization temperatures of the polymer phase. The presence of an aluminosilicate microsphere increases the degree of accumulation of carbonyl compounds in the polymer phase during thermal and photo-oxidative degradation.