5.1 The purpose of this test method is to provide a means for comparing relative water absorption tendencies between different cellular plastics. It is intended for use in specifications, product evaluation, and quality control. It is applicable to specific end-use design requirements only to the extent that the end-use conditions are similar to the immersion period (normally 96 h) and 5.1-cm [2-in.] head requirements of the test method.
5.2 This test method provides a means for measuring absorption as a result of direct contact exposure to free water. Results by this test method cannot be used to compare the resistance of cellular plastics to water vapor transmission and subsequent condensation within the cells. To determine resistance to water vapor transmission, see Test Methods E96.
5.3 Water absorption testing is subject to several important variables, which if not considered, prohibit sufficient agreement among testing laboratories. Development of this test method has taken into account the most serious of the possible sources of error.
硬质泡沫吸水率测定仪符合标准 GB/T 8810-2005硬质泡沫塑料吸水率的测定 GB/T2918-1998 塑料试样状态调节和试验的标准环境 GB/T 6342-1996 泡沫塑料不橡胶 线性尺寸的测定 硬质泡沫吸水率测定仪的仪器特点 1.硬质泡沫塑料吸水率测定仪包含了所有必要的仪器,用户购买后,不需要添置其他的仪器组件; 2.仪器部件精度高,设计美观大方;...
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