TY JOUR TI PROSPECTIVE PRODUCTION WAYS OF NEW HEAT-RESISTING MATERIALS BASED ON POLYIMIDES KW polyimide KW geometrical parameters KW structural characteristics KW properties KW modification KW block copolyimides KW полиимид KW геометрические параметры KW структурные характеристики KW свойства KW модификация KW блоксополиимиды JO Herald of Technological University AU Prokopchuk, N.R. AU Krut'ko, E.T. AU Stoyanov, O.V. AU Shkodich, V.F. AU Temnikova, N.E. PY 2025 IS 17 PB Kazan National Research Technological University