淀粉/豆渣/纳米蒙脱土复合发泡缓冲材料的制备及性能研究

采用熔融插层法,添加不同含量的蒙脱土,制备了淀粉/豆渣复合发泡缓冲材料,对所制备的复合材料进行了表征和研究。结果表明:蒙脱土质量分数(全文同)小于3%时材料的膨胀率差异较小,而大于3%后随着蒙脱土含量的增加,膨胀率会显著降低,且3%的材料表观密度最低;5%实验组的泡孔直径最小,泡孔均匀,且材料表面无较大的泡孔,其抗吸水效果也最好;添加蒙脱土能够较显著地增加复合材料的机械强度,其中5%实验组的压缩强度最高。在4种不同有机蒙脱土添加量中,5%的添加量的淀粉/豆渣复合材料的综合性能最好。

Preparation of Starch/Soybean Residue/Nano-montmorillonite Composite Foam Cushioning Material and Study of Its Performance

Starch/soybean residue composite foam cushioning material with montmorillonite contents were prepared by a melt-intercalation method.The characterization of the nano-composites was analyzed.The results showed that there is little difference on the expansion rate when montmorillonite content is lower than 3%;when montmorillonite content is above 3%,the expansion rate decreases remarkably with montmorillonite content;the apparent density of the composite with 3% montmorillonite content is lowest;the one with 5% content has the smallest cell diameter,has even cell distribution,and has good effect to resist to water absorption;addition of MMT can increase the mechanical strength of the composite dramatically and the 5% MMT content has the highest compressive strength;among the four MMT content nanocomposites,the 5% one has the highest comprehensive properties.