Hollow‐fiber membranePolytetrafluoroethylene membranePorous structureStress‐strain curveStretching parametersPolytetrafluoroethylene (PTFE) porous hollow-fiber membranes were prepared by a method involving billet preform, paste extrusion, stretching, and sintering. The influence of stretching parameters including...
In addition to those properties, we also keep stress strain curves and we can also like measure like tensile modulus, which is also called like elastic modulus. We can also measure yield point. It's the point actually where the material starts, like yielding where actually from like a plasti...
In addition to those properties, we keep stress and strain curves and also measure tensile (elastic) modulus, yield point where the material starts yielding from the plastic to elastic region, and toughness in the area under the curve. In addition to those standard ASTM test methods, we also...
strainat 200℃.Atroomtemperature,theaccumulatedcreep-ratchetingstraincorrespondingto 400cyclesforpeakholdinglminwasnearly1.06timesthatforpeakholding0.5min and1.3timesthatwithoutpeakholding.While,at100℃,150℃and200℃they werealmost1.1timesand1.6times,1.1timesand1.7times,1.05timesand1.9 times,respectively.This...
Fig. 1(b) represents the PTFE/Al/Cu/Pb thermal decomposition, in which a total of five endothermic peaks can be observed on the DSC curve. In addition to the melting of PTFE at peak A and the decomposition of PTFE at peak B [ 26], for the PTFE/Al/Cu/Pb mixture, the Pb powder ...
第28卷增刊2007年8羹材料热处理学报胃艮AKS走Cno》硌OFMA镌冀lA毛SANDHEAT豫E^=】B眭潦rrV01.28SupplementAugust2007纳米WC和纳米PTFE的复合镀层微拉伸研究周细应1 2,李培耀1,陈康1,刘廷辉’(1.上海工程技术大学材料工程学院,上海200336:2.上海交通大学材料科学与工程学院,上海20030)摘要:采用电刷镀技术猩高速钢W6...
The test results show that the stress-strain curve of the PTFE scrim changes significantly with increasing temperature and PTFE scrim undergoes different stretching stages. Excessive elongation affects the service lifetime of the filter material. The elongation at break of the PTFE scrim increases ...
It is of great interest that no initial cyclic stress strain curve was observed under cyclic compression at peak holding time. This indicates that creep recovery due to anelastic relaxation decreases the ratcheting rate of PTFE material under compressive creep-fatigue conditions. This research provides...
1. The strain curves for various states of strain with v i = const and T=const may be described to a first approximation by a single general curve for the stress i against the strain i, with the latter dependent on the temperature and the strain rate. 2. A theoretical description has ...
In the elastic stage, the relationship between stress and strain is approximately linear. As the specimens are further compressed, in the plastic stage, the specimens are deformed and upset macroscopically. The stress in the plastic stage continues to increase with the increase of the strain, ...