ФИЗИКО-МЕХАНИЧЕСКИЕ И ТЕРМОДЕФОРМАЦИОННЫЕ СВОЙСТВА ПЛАСТИФИЦИРОВАННЫХ ВЫСОКОНАПОЛНЕННЫХ КОМПОЗИТОВ НА ОСНОВЕ ПОЛИПРОПИЛЕНА И КВАРЦА
DOI:
https://doi.org/10.17122/ogbus-2023-2-118-141Ключевые слова:
кварц, полипропилен, композит, термомеханические кривые, разрушающее напряжение, предел текучести при растяжении, вулканизацияАннотация
Рассмотрено влияние содержания кварца (диоксида кремния) на основные физико-механические свойства композитов на основе полипропилена. Показано, что введение компатибилизатора - сополимера полипропилена с малеиновым ангидридом – в состав композита способствует улучшению свойств и совместимости смешиваемых компонентов смеси. Исследовали такие свойства, как разрушающее напряжение, предел текучести при растяжении, относительное удлинение, теплостойкость и показатель текучести расплава. Использование синтезированного полиэтиленового воска в качестве пластификатора позволило в значительной степени улучшить деформационные способности высоконаполненных композитов. Концентрацию кварца варьировали в пределах 5,0–25 % масс., а пластификатора 1,0–3,0 % масс. Методом термомеханических исследований показаны закономерности изменения термомеханических кривых в температурном диапазоне 20–250 °С, в зависимости от концентрации кварца, пластификатора и вулканизующего агента. Комплекс проведенных исследований открыл новые возможности упрочнения композитов и повышения их теплостойкости.Библиографические ссылки
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