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首页> 外文期刊>Nano Hybrids >Synthesis and Properties of Cross-linkable Waterborne Polyurethane/HMMM-CNT Nanocomposite
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Synthesis and Properties of Cross-linkable Waterborne Polyurethane/HMMM-CNT Nanocomposite

机译：交联型水性聚氨酯/ HMMM-CNT纳米复合材料的合成与性能

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A series of cross-linked waterborne polyurethane/hexamethoxymethylmel-amine-carbon nanotube nanocomposites (WBPU/HMMM-CNT) were synthesized using carboxylic group functionalized CNT. The carboxylic groups on CNT were reacted with the methoxy groups of HMMM to get bonded HMMM-CNT. Unreacted methoxy group of HMMM-CNT was crosslinked with the carboxylic acid salt groups of WBPU and made crosslinked WBPU/HMMM-CNT nanocomposite. The mechanical properties (tensile strength and Young's modulus) of conventional WBPU, crosslinked WBPU/HMMM, WBPU/CNT and WBPU/HMMM-CNT nanocomposites were compared under three conditions: untreated, wet and dried. It was observed that the mechanical properties of the crosslinked WBPU/HMMM-CNT nanocomposites were the least affected by water compared to conventional WBPU, crosslinked WBPU/HMMM, and WBPU/CNT nanocomposites. Differential scanning calorimetry (DSC) analysis also confirmed that the WBPU/HMMM-CNT nanocomposite can absorbed least water which can be easily removed by heating without destroying their crystalline structure. Crosslinked WBPU/HMMM-CNT nanocomposite recovered most of its mechanical properties of (with optimum HMMM-CNT content) after drying.
机译：利用羧基官能化的CNT合成了一系列交联的水性聚氨酯/六甲氧基甲基蜜胺-碳纳米管纳米复合材料（WBPU / HMMM-CNT）。使CNT上的羧基与HMMM的甲氧基反应，得到键合的HMMM-CNT。 HMMM-CNT的未反应甲氧基与WBPU的羧酸盐基交联，制成WBPU / HMMM-CNT纳米复合材料。在以下三种条件下，比较了常规WBPU，交联WBPU / HMMM，WBPU / CNT和WBPU / HMMM-CNT纳米复合材料的机械性能（拉伸强度和杨氏模量）。观察到，与常规WBPU，交联的WBPU / HMMM和WBPU / CNT纳米复合材料相比，交联的WBPU / HMMM-CNT纳米复合材料的机械性能受水的影响最小。差示扫描量热法（DSC）分析还证实，WBPU / HMMM-CNT纳米复合材料吸收的水分最少，可以通过加热轻松去除而不破坏其晶体结构。交联的WBPU / HMMM-CNT纳米复合材料干燥后恢复了大部分机械性能（具有最佳HMMM-CNT含量）。

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