ASTM E595-15 真空环境中放气引起的总质量损失及收集的挥发性可凝结物的测试
关键字:ASTM E 595,ASTM E595,outgassing test,渗气测试,除气测试
ASTM E595-15 Outgassing 除气测试/渗气测试
ASTM E595 真空环境下除气作用引起的总质量损失和挥发物质冷凝量的测试
ASTM E595 Standard Test Method for Total Mass Loss and Collected Volatile Condensable Materials from Outgassing in a Vacuum Environment
This test method covers a screening technique to determine volatile content of materials when exposed to a vacuum environment. Two parameters are measured: total mass loss (TML) and collected volatile condensable materials (CVCM).An additional parameter, the mount of water vapor regained (WVR), can also be obtained after completion of exposures and measurements required for TML and CVCM.
ASTM E595-15 Outgassing 除气测试/渗气测试-测试范围
各种各样的有机分子,聚合物和无机材料都可被测试。包括:聚合混合物,发泡材料,弹性体,薄膜,胶带,绝缘体,收缩管,胶水,涂料,纺织面料,和轮滑油等等。
ASTM E595-15 Outgassing 除气测试/渗气测试-标准要求
CVCM (collected volatile condensable materials)挥发物质冷凝量, 要求≤0.1%
TML (total mass loss)总质量亏损,要求≤1%
WVR (the amount of water vapor regained)水汽量
备注:测试是否通过取决于TML和CVCM是否符合以上标准要求。
TML 1.00%和CVCM 0.10%的要求已经被作为航空材料筛选级。
ASTM E595-15 Outgassing 除气测试/渗气测试-测试环境
预处理环境:73F/50%(24小时) 后置环境:73F/50%(24小时)
测试参数:在257±2F(125°C)温度,真空度单位≤5 x 10-5压强情况下24小时除气
预处理环境:73F/50%(24小时) 后置环境:73F/50%(24小时)
测试参数:在257±2F(125°C)温度,真空度单位≤5 x 10-5压强情况下24小时除气