СШИТЫЕ И НАПОЛНЕННЫЕ КОМПОЗИТЫ НА ОСНОВЕ ПОЛИОЛЕФИНОВ

  • Ulviyya M. Mammadli Институт полимерных материалов НАН Азербайджана
Ключевые слова: пенополиолефин, сшивание, теплостойкость, термостойкость, полиэтилен, каолин, карбонат каль-ция, наполнитель, сенсибилизатор, экструдер, экструзия

Аннотация

В статье приводится обзорный литературный материал ряда авторов по проблеме получения модифицированных полиолефинов в процессе сшивания. Показано, что материалы на основе полиолефинов, отличающихся повышенной теплостойкостью, способствуют улучшению комплекса технических требований по светостойкости, надежности, технологичности применительно к производству и использованию кабельно-проводниковой продукции. В частности, приводятся экспериментальные данные по использованию кремнийорганического карбоксилата олова с целью получения изделий с наилучшими качественными характеристиками. Представлены результаты теоретических и экспериментальных исследований по влиянию состава композиций полиолефинов на кинетику процесса сшивания, а также реологические и теплофизические свойства. Рассмотрена принципиальная возможность изучения влияния дозы облучения на регулирование процесса изменения структуры композитов. Как показали ряд авторов, этот метод позволяет целенаправленно подойти к разработке сшитых композитных материалов с заранее заданными свойствами. Методом радиационно-химического сшивания рассмотрена сравнительная характеристика структуры полимерной основы в присутствии и без различных типов наполнителей в высоконаполненных композитах. Представлены данные по влиянию условий радиационного сшивания на плотность сетки и механические свойства сшитого полиэтилена при высоких температурах. Приводятся данные по химической стойкости сшитого полиэтилена к действию различных химических реагентов, таких как ацетон, бензол, толуол, четыреххлористый углерод, диэтиловый эфир, бензин-76, и смазок. Одним из важных обстоятельств при изучении структуры и свойств полимерных композитов является возможность математического моделирования вязкоупругой податливости густосетчатых полимеров во взаимосвязи с методологией ее теоретической параметрической идентификации с последующим прогнозированием результатов термомеханического эксперимента.

Для цитирования:

Мамедли У.М. Сшитые и наполненные композиты на основе полиолефинов. Изв. вузов. Химия и хим. технология. 2018. Т. 61. Вып. 6. С. 4-16

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Опубликован
2018-06-06
Раздел
Обзорные статьи