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� , � � ' I I <br /> � CARLISLE'S <br /> S�IRE�WELD REINFORCED <br /> � � TPO MEMBRANE <br /> Extreme Testing For Severe Climates <br /> ASTM Standard D6878 is the material specification for Thermoplastic Polyolefin Basetl Sheet Roofing. It covers material property requirements for <br /> TPO roof sheet and includes initial and aged properties after heat and xenon-arc exposure.As stated in the scope of the standard, "the tests and <br /> property limits used to characterize the sheet are values intended to ensure minimum quality for the intended purpose."Carlisle's goal is to produce <br /> TPO that ensures maximum pertormance for the intended purpose of roofing membranes.Maximum performance requires the membrane to far <br /> exceed the requirements of ASTM D6878.For severe climates like Miami,FL and Phoenix,AZ,EXTREME testing is required. <br /> Heat Aging accelerates the oxidation rate that roughly doubles for exposure.The acid fog accelerates acid etching that may occur from <br /> each 10°C(18°F)increase in roof inembrane temperature. Oxidation acid rain if the roof inembrane is not resistant to acidic conditions. <br /> (reaction with oxygen)is one of the primary chemical degradation • ASTM requirement—none <br /> mechanisms of roofing materials. <br /> • Carlisle EXTREME test*• <br /> � � � � <br /> ,-: ,,{,.,,,, ,;�,� ,,f.,. .. � • 10 days heat aging at 240°F(116°C)followed by <br /> ` �"�'' � - • 5 days water immersion at 158°F(70°C)or with another <br /> ASiM TEST ?40°F 32 w90k8 x b2 weeks <br /> specimen set <br /> �r t� 27�F ��A 13� • 5 eight-hour cycles in Kesternich sulfur dioxide chamber <br /> (sulfurous acid fog)followed by <br /> • Test specimen is 1"by 4"piece of 45-mil membrane unbacked, • 5040 kJ/m2(2000 hrs at 0.70 W/m2 irradiance)xenon-arc <br /> placed in circulating hot-air oven. exposure <br /> *Test specimen is 2.75"by 5.5"piece of inembrane with edges sealed. <br /> • Criterion—no visible cracks after bending aged test specimen <br /> around 0.25"-diameter mandrel. *Criterion—after 3 complete cycles,test specimens shall remain <br /> flexible and not have any cracking untler 10x magnification while <br /> Xenon-Arc exposes the membrane samples to the combined effect wrapped around a 3"-diameter mandrel. <br /> of ultraviolet,visible and infrared radiation as well as ozone,heat and <br /> water spray,to greatly accelerate the effects of outdoor weathering. <br /> The radiation dose is measured in kilojoules per square meter(kJ/ <br /> m2)at 340 nm machine UV wavelength.The irradiance power of the <br /> xenon-arc lamp is measured in Watts per square meter(W/m2). <br /> � � � <br /> � ,� ,�,y�v���� ,, . , r, a_�,a m s,_=K.� tr"_,�--,,� — <br /> ASTM 1EST �T 46-MML e0-�All !0-� <br /> kJ/m=at 3d0 nm 10.a80 17,640 20,960 27,720 <br /> • Test specimen is 2.75"by 5.5"piece of inembrane,unbacketl, <br /> weathering side facing arc lamp. <br /> • Criterion—no visible cracks viewed under 10x magnification <br /> while wrapped around 3"-diameter mandrel. <br /> Environmeirtal Cycling subjects the membrane to repeated cycles <br /> of heat aging,hot-water immersion or acid fog followed by xenon-arc <br /> Investing in Boofinq So/utions for 50 Years <br /> 800-479-6832• PO Box 7000• Carlisle,PA 17013 • Fax:717-245-7053•www.carlislesyntec.com � � ' <br /> Carlisle SynTec <br />