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首页> 外文期刊>Journal of Applied Polymer Science >Construction of thermoplastic cellulose esters matrix composites with enhanced flame retardancy and mechanical properties by embedding hydrophobic magnesium hydroxide
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Construction of thermoplastic cellulose esters matrix composites with enhanced flame retardancy and mechanical properties by embedding hydrophobic magnesium hydroxide

机译：通过将疏水性氢氧化镁包埋，具有增强的阻燃性和机械性能的热塑性纤维素酯基质复合材料

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摘要

Biomass-based composites with renewability and biodegradability have attracted extensive researches, but their applications are hindered by poor mechanical properties and flame retardancy. Cellulose ester matrix composites (CEMC), a kind of biomass-based composites, were prepared with inorganic crystals as flame retardant and reinforcement. Cellulose acetate oleate (CAO) prepared by mechanical activation-assisted solid-phase reaction was used as thermoplastic matrix. Hydrophobic oleate-magnesium hydroxide (O-MH), which was surface-modified with oleic acid, was embedded into CAO to prepare O-MH/CAO composites by hot pressing. The introduction of oleoyl contributed to favorable thermoplasticity of cellulose ester, resulting in enhanced thermal stability and mechanical properties of CEMC. The uniform dispersion of O-MH in the CAO matrix via metal-organic coordination increased the mechanical properties and flame retardancy of O-MH/CAO composites, ascribing to the toughening effect and combustion inhibition effect induced by O-MH. This study provides a feasible technology for fabricating the CEMC with outstanding thermal stability and mechanical properties.
机译：生物质基复合材料具有可再生性和生物可降解性，已经引起了广泛的研究，但其力学性能和阻燃性能较差，阻碍了其应用。采用无机晶体作为阻燃剂和增强剂，制备了纤维素酯基复合材料（CEMC）。采用机械活化辅助固相反应法制备醋酸纤维素油酸酯（CAO）作为热塑性基体。将油酸表面改性的疏水油酸氢氧化镁（O-MH）嵌入CAO中，通过热压制备O-MH/CAO复合材料。油酰基的引入有助于纤维素酯的良好热塑性，从而提高CEMC的热稳定性和机械性能。O-MH通过金属有机配位在CAO基体中均匀分散，提高了O-MH/CAO复合材料的力学性能和阻燃性能，这是由于O-MH诱导的增韧效应和燃烧抑制效应。本研究为制备具有优异热稳定性和机械性能的CEMC提供了一种可行的工艺。

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