Древесно-полимерные композиты на основе поливинилхлорида, армированные хризотиловым асбестом

Проблема усиления древесно-полимерных композитов (ДПК) в настоящее время решается путем введения в их состав связующих агентов, улучшающих адгезию между древесным наполнителем и полимером. Однако введение подобных добавок неспособно усилить данные композиты в той степени, чтобы применять их  в новых областях строительства. Наполнение композиционных материалов волокнистыми модификаторами показывает свою высокую эффективность. В данной работе изучалось влияние хризотил-асбестовых волокон различной длины на физико-механические характеристики древесно-полимерных композитов на основе поливинилхлорида (ПВХ). Исследования показали, что наиболее эффективными для усиления ДПК являются волокна длиной 2 мм, при этом прочность при растяжении увеличилась на 25 %, при изгибе – на 38 %, а модуль упругости при растяжении увеличивается в два раза. Кроме того, выявлено снижение показателей водопоглощения и истираемости, причем данный эффект в большей степени выражен для составов с более длинными волокнами. Оптимальное содержание асбеста составило 7,5 м.ч. для всех длин волокон.  Предлагаемые составы ДПК на основе ПВХ позволяют расширить ассортимент изделий на их основе, в том числе и в области конструкционных пластмасс.

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