00000nam 2200000zi 4500 9.941942 CaOODSP 20241017155152 m o d f cr mn||||||||| 240815e197710##oncao ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre DR52-17/25-1977E-PDF McAndless, J. M., 1942- author. Application of ultrasound and microwaves during treatment of fabrics with liquid-repellent finishes / by J.M. McAndless and B.V. Lacroix, and A.J. Last and T.W. Hislop. Ottawa : Defence Research Establishment Ottawa, October 1977. 1 online resource (iii, 40 pages, 2 unnumbered pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier DREO report ; no. 764 "Unclassified." Digitized edition from print [produced by Defence Research and Development Canada]. Includes bibliographical references (pages 35-36). "Two types of military fabric were treated with a liquid-repellent fluorochemical finish in the presence of high-frequency sonic energy (ultrasound) over a range of frequencies and power levels. Fabric properties such as physical strength, liquid repellency, and durability of repellency to laundering and wearing were evaluated following treatment to determine the effects of using ultrasound during the finishing process. A second series of tests was carried out to determine whether microwave energy could be employed for the purpose of ensuring a more uniform impregnation of the fabrics, as well as to accelerate the drying and curing process"--Abstract, page iii. Includes abstracts in English and French. Water repellents. Microwaves Military applications. Textile chemistry. Hydrofuges. Micro-ondes Applications militaires. Chimie textile. Defence Research Establishment Ottawa, issuing body. Canada. Department of National Defence. Research and Development Branch, issuing body. DREO report ; no. 764. (CaOODSP)9.941661 PDF 2.57 MB https://publications.gc.ca/collections/collection_2024/rddc-drdc/DR52-17-25-1977-eng.pdf 77-165