2至360K温度范围内聚乙烯的热容。I. 线性和支化聚乙烯全聚合物的标准样品
Heat Capacities of Polyethylene from 2 to 360 K. I. Standard Samples of Linear and Branched Polyethylene Whole Polymer.
作者信息
Chang S S, Bestul A B
机构信息
Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234.
出版信息
J Res Natl Bur Stand A Phys Chem. 1973 Jul-Aug;77A(4):395-405. doi: 10.6028/jres.077A.028.
Heat capacities of two well characterized polyethylene samples have been measured from 2 to 360 K in a precision vacuum adiabatic calorimeter. The two samples are derived from the same stocks from which NBS standard reference materials (SRM) 1475 and 1476 for linear and branched polyethylene whole polymers, respectively, were established. Both samples have been studied in the conditions as received. The branched polyethylene sample has also been studied following various thermal treatments in the calorimeter. The effect of thermal history on the behavior of branched polyethylene has also been studied by differential scanning calorimetry.
在精密真空绝热热量计中，已对两个特性明确的聚乙烯样品在2至360 K的温度范围内进行了热容测量。这两个样品源自同一批原料，从中分别制备了用于线性和支化聚乙烯全聚合物的美国国家标准局（NBS）标准参考物质（SRM）1475和1476。两个样品均在收到时的条件下进行了研究。支化聚乙烯样品还在热量计中经过各种热处理后进行了研究。还通过差示扫描量热法研究了热历史对支化聚乙烯行为的影响。
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