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NASA General Specification No. SP-R-0022 Vacuum Stability Requirements of Polymeric Material for Spacecraft Application.
NASA SP-R-0022熱空間材料篩選試驗方法-熱真空釋氣試驗(美國宇航局標(biāo)準(zhǔn))
ASTM E595 Standard Test Method for Total Mass Loss and Collected Volatile Condensable Materials from Outgassing in a Vacuum Environment.
國外涉及熱真空釋氣的標(biāo)準(zhǔn)試驗方法的有5個,分別是美國材料和試驗協(xié)會標(biāo)準(zhǔn)ASTM E595,歐空局標(biāo)準(zhǔn)ECSS-Q-ST-70-02,美國宇航局Johson 宇航中心標(biāo)準(zhǔn)( Johnson Space Center) JSC-SP-R-0022,美國宇航局Marshall宇航飛行器中心( Marshall Space Flight Center) 標(biāo)準(zhǔn)MSFC-SPEC-1443 和MSFC-PROC-3257。目前國際通用的挑選宇航用非金屬材料的熱真空釋氣標(biāo)準(zhǔn)是ASTM E595 和ECSS-Q-ST-70-02。
ASTM E595熱真空釋氣測試
ASTM E595 在真空環(huán)境中除氣作用引起的總質(zhì)量損失和揮發(fā)物質(zhì)冷凝量的測試方法
ASTM E595 Standard Test Method for Total Mass Loss and Collected Volatile Condensable Materials from Outgassing in a Vacuum Environment
ASTM E595熱真空釋氣測試-測試方法
ASTM E595除氣測試方法包含使用篩選技術(shù)來確定的材料在真空狀態(tài)下的揮發(fā)性。需要測試兩個參數(shù):總質(zhì)量虧損(TML)和揮發(fā)物質(zhì)冷凝量(CVCM)。另一個參數(shù)水汽量(WVR), 也可以在完成對TML和CVCM的測試后獲得。
ASTM E595 outgassing test, 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 amount of water vapor regained (WVR), can also be obtained after completion of exposures and measurements required for TML and CVCM
ASTM E595熱真空釋氣測試-測試項目和要求
TML (total mass loss)總質(zhì)量虧損,要求≤1%
CVCM (collected volatile condensable materials)揮發(fā)物質(zhì)冷凝量, 要求≤0.1%
WVR (the amount of water vapor regained)水汽量
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