Open AccessEXPERIENCE OF APPLICATION OF HEAT-INSULATING PLATES BASED ON PLANT FIBERS
Author(s) -
Sergey Romanovskiy
Publication year - 2022
Publication title -
vestnik bgtu im. v.g. šuhova
Language(s) - English
Resource type - Journals
ISSN - 2071-7318
DOI - 10.34031/2071-7318-2021-7-1-31-43
Subject(s) - composite material , materials science , dynamic insulation , enclosure , moisture , thermal insulation , heat resistance , heat transfer , layer (electronics) , vacuum insulated panel , engineering , electrical engineering , mechanics , physics
The article presents the results of studies proving the effectiveness of the use of heat- insulation plates containing noil of flax as a structure-forming material.
Information on field tests in the construction of a wall enclosure with a ventilated insulation sys-tem of an operated one-story residential building and studies of the operational and technological characteristics of heat-insulating materials made of flax fiber is presented. On the basis of experi-mental data, the values of the heat transfer resistance of the wall enclosure are calculated at an air temperature of -2 ° C to -19 °C. The dependences of the distribution of moisture over the thickness of the heat-insulating layer are constructed. The test results shows that during the operation of an exter-nal wall fence with a ventilated insulation system, the moisture content of the heat-insulating material based on noils of flax is 15.5 %. The outside air temperature of -19 °C it has a heat transfer resistance similar to that of the Acoterm Flax heat-insulating plate, equal to 3,04 (m2∙°C)/W. The study of techno-logical characteristics shows that flax noils insulation can be cut, sawn and mounted to a wall fence using dowel-nails. The fire resistance tests carried out shows that the heat-insulating plates based on flax fibers do not ignite under the influence of fire, but the fibers of the noils are pulled out. The mate-rial belongs to the G4 combustible group and has a low smoke-generating ability.
As a result of the research, the rational use of lflax noils for the production of heat-insulating boards has been substantiated.