Thermal deformation characteristics of composites based on fibrous basalt and polypropylene
Year: 2024
Type: article
Abstract: The results of a study of the influence of the concentration of fibrous filler -basalt on the thermomechanical curves of the dependence of deformation on temperature for composites based on isotactic polypropylene are presented.The softening temperature and first-order phase transition were established for all composites under study.The basalt content varied within 5.0-30.0wt %.Increase in the content of fibrous basalt within -1.0; 5.0; 10.0; 15.0; 20.0 and 30 wt % respectively lead to a change in the phase transition temperature in the following sequence: 176, 167, 174, 174, 160, 152°С.The need to use this approach to interpret the data obtained is due to the fact that the filler content has an ambiguous effect on the areas of the temperature range of melting and destruction of composites.For example, from a comparative analysis of the data in this table, one can notice that in the temperature range of melting of the polymer matrix, the maximum value of the peak and end of the melting range is found in samples with a 1.0 wt % fibrous basalt content.It has been established that with a 30 wt % filler content in compatibilized polypropylene, on the contrary, the melting point decreases by approximately 20°C.The influence of the concentration of crosslinking agentssulfur and dicumyl peroxide on the thermomechanical curves of the dependence of deformation on temperature for sparsely mesh and densely mesh crosslinked composites was studied
Source: PPOR
Language: English
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4403166708