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首页> 外文期刊>Journal of Applied Polymer Science >Jute-Fiber-Reinforced Polyurethane Green Composites Based on Mesua ferrea L. Seed Oil
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Jute-Fiber-Reinforced Polyurethane Green Composites Based on Mesua ferrea L. Seed Oil

机译：黄麻种子油的黄麻纤维增强聚氨酯绿色复合材料

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摘要

Two types of environmentally friendly jute-fiber-reinforced green composites based on Mesua ferrea L.were prepared with poly(urethane ester) and poly(ur-ethane amide) resin blends with commercially availablepartially butylated melamine–formaldehyde and epoxyresins through solution impregnation and hot-curingmethods. The composites were cured at a temperature ofabout 130-140°C under a pressure of 35 ± 5 kg/cm~2forabout 2 h. The mechanical properties, such as tensilestrength, flexural strength, elongation at break, hardness,and density, of all of the composites were measured andcompared. The mode of interaction between the filler andthe matrix were studied by Fourier transform infraredspectroscopy and scanning electron microscopy of the frac-tured composite samples. The water uptake in differentchemical media was observed, and we found that all ofthe composites possessed excellent hydrolytic stabilityagainst almost all of the media except the alkali. Thermog-ravimetric analysis (TGA) and differential scanning calo-rimetry (DSC) were used to analyze the thermal behaviorof the composites. TGA of the composites showed degra-dation much above that of the virgin blends, which indi-cated their high thermostability. The glass-transitiontemperatures, as shown by DSC analysis, were found tobe much higher.
机译：用聚氨基甲酸酯和聚氨基甲酸酯树脂与掺有市售的部分丁基化三聚氰胺-甲醛和环氧树脂的共混物通过溶液浸渍和热法制备了两种基于墨索亚铁杉的环保型黄麻纤维增强绿色复合材料。 -固化方法。将复合物在约130-140℃的温度下在35±5kg / cm 2的压力下固化约2小时。测量并比较了所有复合材料的机械性能，例如拉伸强度，弯曲强度，断裂伸长率，硬度和密度。通过傅立叶变换红外光谱和扫描电子显微镜对复合材料的断裂形态进行了研究。观察到在不同化学介质中的吸水率，我们发现除了碱以外，所有复合材料都对几乎所有介质都具有出色的水解稳定性。用热重分析（TGA）和差示扫描量热法（DSC）分析了复合材料的热行为。复合材料的TGA表现出比原始混合物高得多的降解，这表明它们具有很高的热稳定性。 DSC分析表明，玻璃化转变温度要高得多。

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