竹纖維本身是由天然聚合物所組成的植物纖維，植物纖維裡的纖維素與半纖維素使竹纖維擁有良好的吸水性，而材料的機械強度容易受到水份的影響而衰退，因此本研究的主要目的在於透過表面處理對竹纖維進行改性，有效地降低其吸水率並利用樹脂轉注成型法與環氧樹脂結合，製作成竹纖維複合材料。研究內容分為四個部分。首先，在第一部分中，我們量測了經過矽烷和緻密化處理竹纖維的拉伸強度、吸水率和密度。實驗結果表明，經過矽烷與緻密化處理後，竹纖維的機械強度與密度會上升，而經過矽烷處理後吸水率會降低。在第二部分中，我們量測了經過矽烷和油處理竹纖維的拉伸強度、吸水率和密度。實驗結果表明，油處理會導致竹纖維的機械強度下降，但由於竹纖維吸收了大量的油脂，使竹纖維的吸水率降低並且密度會提高。在第三部分中，我們探討了竹纖維與樹脂之間的結合程度，實驗結果表明，經過矽烷處理後的竹纖維與樹脂有著較好的結合程度。最後，在第四部分中，我們選擇吸水率降低效果顯著且與樹脂結合程度較好的酪梨油-Silane6341製程作為複合材料的補強材料，製備成複合材料並探討高溫浸潤下機械強度的衰退程度與吸水率。研究結果顯示，表面預處理對於竹纖維複合材料的防水性能有明顯的改善。

The purpose of this study is to effectively reduce the moisture absorption of bamboo fibers and composites through surface treatment. By using surface treatments such as Silane, densification, and oil treatment, we investigated the mechanical properties and water absorption rate of bamboo fibers. Subsequently, we selected avocado oil-Silane6341, which exhibited significantly reduced moisture absorption and improved compatibility with resin, to prepare the composite material. The study then investigated the degree of mechanical strength decay and moisture absorption under high-temperature immersion. The results show that surface pre-treatment significantly improves the water resistance of the bamboo fiber composite.

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