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首页> 外文会议>Materials science and technology VII >Development of a Kraft Paper Box Lined with Thermal-Insulating Materials by Utilizing Natural Wastes
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Development of a Kraft Paper Box Lined with Thermal-Insulating Materials by Utilizing Natural Wastes

机译：利用自然废物开发内衬隔热材料的牛皮纸箱

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This research studied the feasibility of using natural fibers extracted from natural wastes as a thermal-insulating material lined in a Kraft paper box packaging. The natural fibers were extracted from natural waste of rice straws using NaOH solutions. The extracted fibers were then formed as a porous thermal-insulating pad by a spray lay-up method using natural rubbers as binders. The thermal conductivities, specific heat capacities and temperature-rise time of the natural fiber insulation and other thermal-insulating materials including polystyrene foam, a polyethylene foam, and a glass fiber insulation were studied and compared. The glass fiber insulation showed the highest thermal conductivity, while the thermal conductivities of the other studied insulating materials were found to be similar. Moreover, the polymeric and natural-fiber insulations show better temperature-rise resistance than the glass fiber insulation. The temperature rises for different insulating materials were estimated using the analytical analysis of heat transfer. The calculated temperature-rise times were compared with the empirical results; both results are in the same order of magnitude. Consequently, a Kraft paper box lined with natural-fiber pads was constructed and compared with a Kraft paper box (without insulation lining) and a polystyrene box of equal sizes. The boxes were packed with an equal amount of ice and left under room temperature for 24 hours. The results show that, after 24 hours, the temperatures inside the natural-fiber lined box and the polystyrene box were contained below 15 ℃, while the temperature inside the Kraft paper box increase to room temperature only after 16 hours. The observation shows that a natural fiber pad can potentially be used as an alternative insulating material in packaging industries, which can enhance environmental-friendly packaging products.
机译：这项研究研究了使用从自然废物中提取的天然纤维作为内衬牛皮纸箱包装的隔热材料的可行性。使用NaOH溶液从稻草的天然废料中提取天然纤维。然后，使用天然橡胶作为粘合剂，通过喷涂法将提取的纤维形成为多孔隔热垫。研究并比较了天然纤维绝缘材料和其他隔热材料（包括聚苯乙烯泡沫，聚乙烯泡沫和玻璃纤维绝缘材料）的导热系数，比热容和升温时间。玻璃纤维绝缘材料显示出最高的热导率，而其他研究的绝缘材料的热导率却相似。而且，聚合物和天然纤维绝缘材料比玻璃纤维绝缘材料具有更好的耐温升性。使用传热的分析分析来估算不同绝缘材料的温升。将计算出的温升时间与经验结果进行比较；两种结果的数量级相同。因此，构造了衬有天然纤维垫的牛皮纸箱，并将其与相同尺寸的牛皮纸箱（不带绝缘衬里）和聚苯乙烯箱进行比较。将盒子装满等量的冰，并在室温下放置24小时。结果表明，24小时后，天然纤维内衬箱和聚苯乙烯箱内的温度保持在15℃以下，而牛皮纸箱内的温度仅在16小时后才升高到室温。观察结果表明，天然纤维垫有可能在包装行业中用作替代隔热材料，从而增强环保包装产品。

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