%0 Journal Article
%T THE COMPRESSED PROPERTIES OF POLYURETHANE RIGID(PUR) FOAM<br>硬质聚氨酯泡沫塑料压缩力学性能
%A LU Zixing
%A TIAN Changiin
%A XIE Ruoze
%A <br>卢子兴
%A 田常津
%A 谢若泽
%J 材料研究学报
%D 1994
%I 
%X The mechanical properties of several PUR foams of different densities have been investigated by low speed compressive tests. Cell structural characteristics and its size ate also determined by SEM analyses. According to stress-strain curves obtained in experiments, the following conclusions have been drawn:PUR foam plastics have viscous characteristics when deformed. This kind of viscosity increases with deformation developed. However, it has nothing to do with density. The stress increases steeply at the instant of sudden change of deformation velocity. Therefore, PUR foam plastics is strain rate sensitive even though under lower strain rate loading. PUR foams plastics of different densities have different tins of stress-strain curves. In turn, they have different deformation and failure modes. The strain-rate sensitivity for PUR foam plastics increases with its density. Temperature has a clear effect on the stress-strain relation of PUR foams plastics. This effect becomes more apparent with the increases of foam density.
%K PUR foam plastics
%K mechanical properties of compressibility<br>硬质
%K 聚氨酯泡沫
%K 压缩
%K 力学性能
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=DF4D89C4962030E0&yid=3EBE383EEA0A6494&vid=5D311CA918CA9A03&iid=94C357A881DFC066&sid=30F3EEEA29E34EE7&eid=522844664D9E629A&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=23&reference_num=2