Thermal behaviour of rigid polyurethane foams |
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Authors: | K Gjurova Chr Bechev K Troev G Borisov |
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Institution: | (1) Higher Institute of Chemical Technology, Bourgas;(2) Higher Institute of Chemical Technology, Sofia;(3) Bulgarian Academy of Sciences, Sofia, Bulgaria |
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Abstract: | By means of a combined thermal analysis technique, the thermal behaviour of rigid polyurethane foams containing additive antipyrenes was studied. The presence of phosphorus- and phosphorus/chlorine-containing antipyrenes based on phosphate and phosphonate and a combination of them led to decreases in the rates of heat and weight loss during heating. More steps of decomposition were formed and the interval of decomposition was widened and shifted to higher temperatures. Some thermal characteristics make it possible to predict the optimum antipyrene compositions and concentrations with minimum time, labour and material consumption under laboratory conditions.
Zusammenfassung Mittels einer kombinierten Technik wurde das thermische Verhalten eines starren, Antipyrene als Additiv enthaltenden Polyurethanschaumes untersucht. Phosphor und Phosphor/Chlor enthaltende Antipyrene auf Phosphat- und Phosphonatbasis und eine Kombination dieser Substanzen vermindern die Geschwindigkeit der Wärmeentwicklung und des Gewichtsverlustes während des Aufheizvorganges. Es treten mehr Zersetzungsschritte auf und das Temperaturintervall der Zersetzung ist größer und nach höheren Temperaturen hin verschoben. Einige thermische Kennwerte ermöglichen die Voraussage der optimalen Zusammensetzung und Konzentration des Antipyren-Additivs für minimalen Zeit-, Arbeits- und Materialaufwand unter Laboratoriumsbedingungen.
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![ycy](/content/m008437020524p12/xxlarge1099.gif) ![scy](/content/m008437020524p12/xxlarge1089.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![kcy](/content/m008437020524p12/xxlarge1082.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![mcy](/content/m008437020524p12/xxlarge1084.gif) ![pcy](/content/m008437020524p12/xxlarge1087.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![ucy](/content/m008437020524p12/xxlarge1091.gif) . ![Ncy](/content/m008437020524p12/xxlarge1053.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![kcy](/content/m008437020524p12/xxlarge1082.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![rcy](/content/m008437020524p12/xxlarge1088.gif) ![ycy](/content/m008437020524p12/xxlarge1099.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![rcy](/content/m008437020524p12/xxlarge1088.gif) ![mcy](/content/m008437020524p12/xxlarge1084.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![chcy](/content/m008437020524p12/xxlarge1095.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![scy](/content/m008437020524p12/xxlarge1089.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![khcy](/content/m008437020524p12/xxlarge1093.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![rcy](/content/m008437020524p12/xxlarge1088.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![kcy](/content/m008437020524p12/xxlarge1082.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![rcy](/content/m008437020524p12/xxlarge1088.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![scy](/content/m008437020524p12/xxlarge1089.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![kcy](/content/m008437020524p12/xxlarge1082.gif) ![pcy](/content/m008437020524p12/xxlarge1087.gif) ![rcy](/content/m008437020524p12/xxlarge1088.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![dcy](/content/m008437020524p12/xxlarge1076.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![scy](/content/m008437020524p12/xxlarge1089.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![vcy](/content/m008437020524p12/xxlarge1074.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![lcy](/content/m008437020524p12/xxlarge1083.gif) ![vcy](/content/m008437020524p12/xxlarge1074.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![zcy](/content/m008437020524p12/xxlarge1079.gif) ![mcy](/content/m008437020524p12/xxlarge1084.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![ncy](/content/m008437020524p12/xxlarge1085.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![scy](/content/m008437020524p12/xxlarge1089.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![ucy](/content/m008437020524p12/xxlarge1091.gif) ![scy](/content/m008437020524p12/xxlarge1089.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![ncy](/content/m008437020524p12/xxlarge1085.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![vcy](/content/m008437020524p12/xxlarge1074.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![pcy](/content/m008437020524p12/xxlarge1087.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![mcy](/content/m008437020524p12/xxlarge1084.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![lcy](/content/m008437020524p12/xxlarge1083.gif) ![softcy](/content/m008437020524p12/xxlarge1100.gif) ![ncy](/content/m008437020524p12/xxlarge1085.gif) ![ycy](/content/m008437020524p12/xxlarge1099.gif) ![scy](/content/m008437020524p12/xxlarge1089.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![scy](/content/m008437020524p12/xxlarge1089.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![ncy](/content/m008437020524p12/xxlarge1085.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![pcy](/content/m008437020524p12/xxlarge1087.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![rcy](/content/m008437020524p12/xxlarge1088.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![ncy](/content/m008437020524p12/xxlarge1085.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![kcy](/content/m008437020524p12/xxlarge1082.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![ncy](/content/m008437020524p12/xxlarge1085.gif) ![tscy](/content/m008437020524p12/xxlarge1094.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![ncy](/content/m008437020524p12/xxlarge1085.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![rcy](/content/m008437020524p12/xxlarge1088.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![tscy](/content/m008437020524p12/xxlarge1094.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![pcy](/content/m008437020524p12/xxlarge1087.gif) ![rcy](/content/m008437020524p12/xxlarge1088.gif) ![mcy](/content/m008437020524p12/xxlarge1084.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![ncy](/content/m008437020524p12/xxlarge1085.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![mcy](/content/m008437020524p12/xxlarge1084.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![lcy](/content/m008437020524p12/xxlarge1083.gif) ![softcy](/content/m008437020524p12/xxlarge1100.gif) ![ncy](/content/m008437020524p12/xxlarge1085.gif) ![ycy](/content/m008437020524p12/xxlarge1099.gif) ![zcy](/content/m008437020524p12/xxlarge1079.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![vcy](/content/m008437020524p12/xxlarge1074.gif) ![rcy](/content/m008437020524p12/xxlarge1088.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![mcy](/content/m008437020524p12/xxlarge1084.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![ncy](/content/m008437020524p12/xxlarge1085.gif) ![vcy](/content/m008437020524p12/xxlarge1074.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![shchcy](/content/m008437020524p12/xxlarge1097.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![scy](/content/m008437020524p12/xxlarge1089.gif) ![dcy](/content/m008437020524p12/xxlarge1076.gif) ![lcy](/content/m008437020524p12/xxlarge1083.gif) ![pcy](/content/m008437020524p12/xxlarge1087.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![lcy](/content/m008437020524p12/xxlarge1083.gif) ![ucy](/content/m008437020524p12/xxlarge1091.gif) ![chcy](/content/m008437020524p12/xxlarge1095.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![ncy](/content/m008437020524p12/xxlarge1085.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![pcy](/content/m008437020524p12/xxlarge1087.gif) ![iecy](/content/m008437020524p12/xxlarge1077.gif) ![ncy](/content/m008437020524p12/xxlarge1085.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![pcy](/content/m008437020524p12/xxlarge1087.gif) ![lcy](/content/m008437020524p12/xxlarge1083.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![scy](/content/m008437020524p12/xxlarge1089.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![lcy](/content/m008437020524p12/xxlarge1083.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![bcy](/content/m008437020524p12/xxlarge1073.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![rcy](/content/m008437020524p12/xxlarge1088.gif) ![acy](/content/m008437020524p12/xxlarge1072.gif) ![tcy](/content/m008437020524p12/xxlarge1090.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![rcy](/content/m008437020524p12/xxlarge1088.gif) ![ncy](/content/m008437020524p12/xxlarge1085.gif) ![ycy](/content/m008437020524p12/xxlarge1099.gif) ![ucy](/content/m008437020524p12/xxlarge1091.gif) ![scy](/content/m008437020524p12/xxlarge1089.gif) ![lcy](/content/m008437020524p12/xxlarge1083.gif) ![ocy](/content/m008437020524p12/xxlarge1086.gif) ![vcy](/content/m008437020524p12/xxlarge1074.gif) ![icy](/content/m008437020524p12/xxlarge1080.gif) ![yacy](/content/m008437020524p12/xxlarge1103.gif) 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