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标题:ASTM C1303/C1303M预测闭孔泡沫绝缘材料长期热阻的试验方法
正文:
ASTM C1303/C1303M-2014 Standard Test Method for Predicting Long-Term Thermal Resistance of Closed-Cell Foam InsulationASTM C1303/C1303M-2014 预测闭孔泡沫绝缘材料长期热阻的试验方法1. ASTM C1303/C1303M标准适用范围1.1 This test method covers a procedure for predicting the long-term thermal resistance (LTTR) of unfaced or permeably faced rigid gas-filled closed-cell foam insulations by reducing the specimen thickness to accelerate aging under controlled laboratory conditions (1-5) .2NOTE 1: See Terminology, 3.2.1, for the meaning of the word aging within this standard.1.2 Rigid gas-filled closed-cell foam insulation includes all cellular plastic insulations manufactured with the intent to retain a blowing agent other than air.1.3 This test method is limited to unfaced or permeably faced, homogeneous materials. This method is applied to a wide range of rigid closed-cell foam insulation types, including but not limited to: extruded polystyrene, polyurethane, polyisocyanurate, and phenolic. This test method does not
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