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Quality evaluation of anti-drop properties of greenhouse cladding materials
Year:
2004
Source of publication :
Polymer Testing
Authors :
Kashti, Yossi
;
.
Levi, Aharon
;
.
Volume :
23
Co-Authors:
Geoola, F., Inst. of Agricultural Engineering, ARO, Volcani Center, PO Box 6, 50250 Bet Dagan, Israel
Kashti, Y., Inst. of Agricultural Engineering, ARO, Volcani Center, PO Box 6, 50250 Bet Dagan, Israel
Levi, A., Inst. of Agricultural Engineering, ARO, Volcani Center, PO Box 6, 50250 Bet Dagan, Israel
Brickman, R., Inst. of Agricultural Engineering, ARO, Volcani Center, PO Box 6, 50250 Bet Dagan, Israel
Facilitators :
From page:
755
To page:
761
(
Total pages:
7
)
Abstract:
An experimental model greenhouse was used to investigate the solar radiation transmission and aging of greenhouse cladding materials in general and anti-drop materials in particular. Three types of low-density polyethylene films covered the experimental greenhouse, which consisted of eight identical sections. Comparison of solar radiation transmission of the films, over a period of 3 months showed that in a wet state (under condensation), non-anti-drop films had lower transmissions than in a dry state. Transmission of new anti-drop film was found to be higher in its wet state than dry state. The deterioration of surface-active additives in anti-drop films was studied. Based on relative difference between the dry and wet state transmissivities of materials, a testing method was developed for measuring and quantifying the efficiency and durability (aging) of anti-drop properties. The relative difference in wet and dry state transmissivities of the anti-drop film deteriorated from +4.2% for new material to -15% after 3 months. © 2004 Elsevier Ltd. All rights reserved.
Note:
Related Files :
aging
Aging of materials
Condensation
greenhouse effect
Low-density polyethylene films
Plastic films
Solar radiation
Show More
Related Content
More details
DOI :
10.1016/j.polymertesting.2004.04.006
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
28597
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:40
Scientific Publication
Quality evaluation of anti-drop properties of greenhouse cladding materials
23
Geoola, F., Inst. of Agricultural Engineering, ARO, Volcani Center, PO Box 6, 50250 Bet Dagan, Israel
Kashti, Y., Inst. of Agricultural Engineering, ARO, Volcani Center, PO Box 6, 50250 Bet Dagan, Israel
Levi, A., Inst. of Agricultural Engineering, ARO, Volcani Center, PO Box 6, 50250 Bet Dagan, Israel
Brickman, R., Inst. of Agricultural Engineering, ARO, Volcani Center, PO Box 6, 50250 Bet Dagan, Israel
Quality evaluation of anti-drop properties of greenhouse cladding materials
An experimental model greenhouse was used to investigate the solar radiation transmission and aging of greenhouse cladding materials in general and anti-drop materials in particular. Three types of low-density polyethylene films covered the experimental greenhouse, which consisted of eight identical sections. Comparison of solar radiation transmission of the films, over a period of 3 months showed that in a wet state (under condensation), non-anti-drop films had lower transmissions than in a dry state. Transmission of new anti-drop film was found to be higher in its wet state than dry state. The deterioration of surface-active additives in anti-drop films was studied. Based on relative difference between the dry and wet state transmissivities of materials, a testing method was developed for measuring and quantifying the efficiency and durability (aging) of anti-drop properties. The relative difference in wet and dry state transmissivities of the anti-drop film deteriorated from +4.2% for new material to -15% after 3 months. © 2004 Elsevier Ltd. All rights reserved.
Scientific Publication
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