The heat aging properties of rigid PVC are studied by means of mechanicalpropertiestest, SEM and FT-IR.
采用力学性能测试、扫描电镜、红外光谱(FT-IR)等方法研究了硬质聚氯乙烯的热老化性能。
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Abrasion and mechanicalpropertiestest of concrete have shown that the degree of abrasion dependent on initial abrasion ratio, flexural strength and limit strain.
Systematic physio-mechanicalpropertiestest and analysis, especially analysis of relationship between expansion rate, dry density, water content, and overlying pressure, are carried out.