- 學位論文
水性高分子－異氰酸酯系膠合劑應用於中密度竹纖維板和竹纖維複合板之產品開發
Products Development of Medium Density Bamboo Fiberboard and Bamboo Composite Fiberboard by Water Based Polymer－Isocyanate Adhesive
摘要
本研究使用水性高分子－異氰酸酯系膠合劑（Water based polymer isocyanate system adhesive）與竹纖維熱壓製成中密度竹纖維板和竹纖維複合板，按CNS9909中密度纖維板的標準測定其力學性質，並評估其運用於3C產品保護殼之可行性。 試驗結果顯示，所有試驗條件的中密度竹纖維板皆符合CNS 9909中密度纖維板的5型標準，同時具備優異的彎曲變形量和變形回彈率，顯示極高的塑性；而竹纖維複合板，其力學性能達到CNS 9909的30型標準，顯示添加竹編和竹旋切單板有助於提升竹纖維板的物理性能。 其中膠合劑添加量13 %、SBR:PMDI=100:30的中密度竹纖維板，其抗彎強度為13.33 N/mm2，抗彎彈性模數為1359.2 N/mm2，內聚強度為1.12 N/mm2，吸水厚度膨脹率19.2 %，並且具備極佳的變形回彈率57.1 %，適合做為3C產品的保護殼之用。 在產品化方面，竹纖維保護殼和竹纖維複合保護殼均能達到2 mm之厚度且有良好的變形回彈率，做為手機保護殼具有強度保護之功效；就視覺上，竹纖維複合保護殼的竹編外觀比竹纖維保護殼的纖維雜亂交織顯得更具美感。 【關鍵字】竹纖維板、苯乙烯-丁二烯橡膠乳液、異氰酸酯系交聯劑、竹旋切單板、竹編
並列摘要
In this study, medium density bamboo fiberboard and bamboo composite fiberboard were manufactured with water based polymer isocyanate system adhesive. According to CNS9909 medium density fiberboard standard, the mechanical properties of the materials were measured and assessed the feasibility in the protective shell of a smartphone. The test results showed that all bamboo MDFs in this study, are in compliance with the standard of CNS9909 type-5. However, it has shown not only the excellent bending displacement and deformation springback rate, but also display high plasticity. On the other hand, the mechanical properties of bamboo composite fiberboard reach the standard of CNS9909 type-30, this mean adding bamboo weaving and bamboo veneer could improve its physical properties. All the samples which adhesive addition were 13% and SBR:PMDI=100:30, the bending strength 13.33 N/mm2, the bending elastic modulus 1359.2 N/mm2, the internal bond 1.12 N/mm2, and the thickness swelling 19.2 %, it also obtained an excellent deformation springback rate of 57.1 %, which made it suitable in the protective shell of a smartphone. In the aspect of become products, both bamboo fiber protective shell and bamboo fiber composite protective shell could produce 2mm of thickness and had fine deformation springback rate to protect smartphone. On the visual, bamboo fiber composite protective shell had a better appearance than bamboo fiber protective shell, because of its beautiful bamboo weaving. 【Keywords】Bamboo Fiberboard, Latex(SBR), Isocyanates (PMDI) Crosslinker, Bamboo Veneer, Bamboo Weaving