The small punch test (SPT) is one of the micro test methods and uses small disc-shaped specimens of about ϕ3~10 mm x t0.5 mm. In this study, thermoplastic and thermosetting resins were targeted to expand the application of the SPT. The deformation behavior was verified and converted to tensile properties. 6-nylon (PA6), polyethylene terephthalate (PET), polycarbonate (PC), and polytetrafluoroethylene (PTFE) were used as thermoplastic resins, and epoxy and phenol as thermosetting resins. The load-displacement curves of all resins in the SP test were divided into 4 regions according to deformation behavior. Judging from the curve shapes, thermoplastic resins showed yielding behavior in the SP test, while thermosetting resins showed little yielding behavior. As for thermoplastic resins, the ordinates of the maximum load in the tensile test were significantly different from that in the SP test. In other words, it was confirmed that different properties were exhibited under uniaxial in tensile test and multiaxial stress in SP test. Regarding the failure modes, PET, PTFE, epoxy, and phenolic showed linear (radial) cracks from the center of the specimen, suggesting brittle failure. PA6 and PC exhibited circumferential cracks, suggesting ductile failure. In addition, the SPT results were converted to UTS and fracture ductility in tensile test. For 0.2% proof stress, good agreement between tensile and SP test results was obtained by using the same formula as for the metallic materials. For UTS, good agreement was obtained by excluding the effects of multiaxial stress fields. For fracture ductility, it was difficult to formulate a uniform formulation due to the effects of plastic instability regions and variations in resin material.

The water-glass (sodium silicates solution) is low-cost and remarkably available as a raw material for novel functional materials. In the present study, the new synthetic process from water-glass for glass hollow foam was developed. We found the saturation point of water retaining in water-glass during the drying process under moisture control at 140 °C. The water-glass dried at 140 °C was crushed into granular powders and filtered with three grades :45~150µm, 150~300 µm, and 300~500 µm. Furthermore, we discovered that the water-glass powder dried at 140 °C expands to spherical micro particles with glass-like envelope (glass hollow foam) by heating at > 140 °C. In addition, the water-glass dried at 140 °C and thermo-plastic powders (various super engineering plastic) were mixed and heated at > 140 °C, which led to fabrication of porous super engineering plastic/glass hollow foam composites.

The value of thermal insulating material is clear and obvious with the climate change and energy consumption．As a developing material，nanofiber applications for thermal properties are being actively investigated．Previous studies have shown that thermal conductivity between fibers and quantitative evaluation of radiation from the fiber surface，are effective for predicting the thermal conductivity of polymeric nanofiber nonwoven fabric which mass production by a melt-blowing method．However，the thermal transfer mechanism of nano scale diameter fibers is not well known．This study focused on the estimate the efficiency of thermal conductivity with two types of models．Also，the computational fluid dynamics flow-analyzing software was used to simulate the adiabatic property of the trial-produced nano-fabric． Consequently，the influence of fiber diameter and fabric thickness was verified，it is also be found that the proposed fiber diameter distribution model was closer to the experimental value．As a result，it can be used for estimation and evaluation the thermal conductivity characteristics of nano scale nonwoven fabric．