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PTFE-VGCFコンポジットの機械的性質および耐摩耗性に及ぼすVGCF添加率の影響
Get PDFEffect of Vapor Grown Carbon Fiber (VGCF) content on mechanical properties and abrasion resistance in Polytetrafluoroethylene (PTFE) -VGCF composite was investigated. The resin powder of PTFE was used as a matrix of 50 μm in diameter, and carbon nano material of VGCF was used as filler. Composite of PTFE resin and VGCF were mixed by blender mill. The VGCF addition was used from 0 wt% to 3 wt%. Tensile test was performed on an Instron type of tensile testing machine at a crosshead speed of 10 mm/min (strain rate: 6×10－3 /s), using smooth and V-notched type tensile specimens. Thermal conductivity (λ) was measured using laser flash method. Coefficient of dynamic friction (μ’) was measured using ball-on-disc method.departmental bulletin pape
竹片を混合したポーラスコンクリートの力学的特性
Get PDFapplication/pdfIt is known that bamboo have water-quality purification function. When porous concrete are mixed with bamboo chip, improvement of water-quality purification function is expected, but compressive strength is decreased. In this research, mortar ( which constitutes porous concrete ) are replaced by bamboo chips ( that size is about 1.2mm or 2.5mm×0.5mm×0.1mm ), evaluating that mortar and porous concrete to mechanical properties. At first step, in order to evaluate 15hit-flow value and compression strength of mortar which were replaced by bamboo chip, here changing to ratio of replacing, and changing to sizes of bamboo chip. Next, verifying compression strength of porous concrete mixing with bamboo chip. As the results, replacing ratio, which compression strength is not decrease remarkably and bamboo chip are able to recognize on surface of porous concrete, is about 5%.departmental bulletin pape
