Physicochemical properties and structure of aerogel type composites on the basis of polyvinyl alcohol/carbon black


如何引用文章

全文:

开放存取 开放存取
受限制的访问 ##reader.subscriptionAccessGranted##
受限制的访问 订阅存取

详细

The porous structure and physicochemical properties of aerogel type composites on the basis of polyvinyl alcohol/carbon black obtained by gas cryotreatment of a foamed composite are studied. The materials consist of more than 50 wt % carbon and have a real density of no less than 0.79 g/cm3 (the bulk density is less than 0.27 g/cm3). It is found that the molecular weight of polyvinyl alcohol and the presence of sodium tetraborate affect the size of the macropores of aerogel type composites, while carbon black does not affect this parameter. The dependence of the specific surface area of carbon black and average size of the macropores of aerogel type composites on their specific surface area is found. The thermal stability of the materials does not depend on their composition and synthesis conditions and falls within the range of 260–280°C. The thermal conductivity of the aerogel type composites on the basis of polyvinyl alcohol/carbon black is in the range of 33–59 mW/(m K). These materials are recommended for application as heat insulators.

作者简介

O. Kokhanovskaya

Institute of Hydrocarbon Processing, Siberian Branch

编辑信件的主要联系方式.
Email: kokolga@yandex.ru
俄罗斯联邦, Omsk, 644040

G. Razdiakonova

Institute of Hydrocarbon Processing, Siberian Branch

Email: kokolga@yandex.ru
俄罗斯联邦, Omsk, 644040

V. Likholobov

Institute of Hydrocarbon Processing, Siberian Branch

Email: kokolga@yandex.ru
俄罗斯联邦, Omsk, 644040

补充文件

附件文件
动作
1. JATS XML

版权所有 © Pleiades Publishing, Ltd., 2017