| Summary: | 博士 === 國立臺灣科技大學 === 高分子工程系 === 93 === The objective of this study is to investigate the energy transportation mechanism in polymers matrix. The energy transportation mechanism concerned about electric and mechanical energy.
The conductive effect of an electronic/ionic complex conductivity modifier for silicone elastomers, which demonstrated an ionic/electronic compounding conductivity effect through the complexation of polypyrrole (Ppy), carbon black (CB), and a poly (propylene oxide)-poly(ethylene oxide) copolymer with 20 wt % LiClO4 (PEL). We tried to use the electronic conduction of CB and Ppy and the ionic conduction of PEL with a silicone matrix. The interaction between these two conduction mechanisms and the influence of the PEL modifier on silicone processing, morphology, intermolecular interaction, mechanical properties, and conductivity were evaluated.
In addition, the mechanics energy transportation mechanism of nanoclay modified PU/PEL blends system. The main goal of this study was to evaluate the effect of the incorporation of clay and organoclay in the PU/PEL (mPU) blends to form intercalated nanocomposites with random distribution sandwich structures of nano-scale organoclay having high stiffness and optimum anti-vibration property. In our experiment, variation of the basal plan spacing of clay and organoclay in the mPU blends was investigated with X-ray; dynamic mechanical analysis (DMA), hysteresis phenomenon and dynamic properties tests were conducted to evaluate the anti-vibration performance and vibration isolation of the polymer material in order to evaluate the effect of the d-spacing of nanoclay on the mPU blending system.
According to the electric energy transportation mechanism experimentals we find the results as follows:
1. The curing reaction rate is fast upon addition of 10wt% of PEL for silicone.
2. The linear molecular structure of polymer electrolyte was wound around the silicone polymer network structure forming semi-IPN. This shows that the Ppy molecule can permeate into SP10 blends more deeply and intermolecular interaction increase.
3. The conductivity of CB showed no significant difference in the SP10 blends. Therefore, after the silicone matrix treatment of the electronic/ionic complex conduction process, there was no incremental effect to the conductivity.
According to the mechanics energy transportation mechanism experimentals we find the results as follows::
1. The d-spacing between the layers of clay and organoclay ranges between 1.78-1.88nm in the presence of PEL.
2. The PU matrix blend with various clay and the Oc contents, it is found that organically modified clay significantly improves the anti-vibration performance of the blends based on the compressive vibration hysteresis effect.
3. From the results of dynamic anti-vibration test, the dynamic ratio of the blends decreases with the addition of clay or organoclay. In addition, clay is better than organoclay in enhancing the vibration isolation of the mPU blends.
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