ИССЛЕДОВАНИЕ ЖИЗНЕСПОСОБНОСТИ ПРЕПРЕГОВ НА ОСНОВЕ ЭПОКСИДНОЙ СМОЛЫ С АРОМАТИЧЕСКИМ АМИННЫМ ОТВЕРДИТЕЛЕМ
DOI:
https://doi.org/10.31489/2023No3/62-69Ключевые слова:
полимерный композиционный материал, препреги, смола, отвердитель, полимерное связующее, углеродное волокно, жизнеспособностьАннотация
Настоящее время наблюдается устойчивая тенденция использования углепластиков в авиационно-космической и оборонной промышленности, основанная преимущественно на использовании предварительно пропитанных полуфабрикатов - препрегов. Производство углепластиковых деталей из препрегов часто требует длительного производственного времени, в течение которого препрег должен сохранять свои эксплуатационные свойства. Поэтому одной из основных характеристик препрега является его жизнеспособность. В данной работе разработана подходящая композиция смолы с оптимизированными свойствами и методика исследования жизнеспособности образцов препрега, основанная на определении липкости и степени отверждения препрега в зависимости от времени хранения. Изучено влияние времени хранения препрега на прочностные характеристики отвержденных ламинатов. Были получены образцы препрега с длительной жизнеспособностью до 60 дней. Полученные экспериментальные данные имеют практическое значение при промышленном производстве изделий из углепластиков, так как устанавливают связь между эксплуатационными свойствами препрега и сроками хранения.
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