淀粉基生物质发泡塑料的缓冲性能研究

以淀粉和乙烯-醋酸乙烯共聚物(EVA)为原料,辅以甘油、NaHCO_3、木粉等助剂,利用平板硫化机进行模压发泡,制备淀粉基复合发泡材料。通过静态压缩特性分析,研究复合发泡材料的缓冲特性,以及淀粉、甘油、NaHCO_3添加量对复合材料缓冲性能的影响。研究结果表明:随着淀粉添加量的增加,复合材料的缓冲性能得到提高,淀粉质量分数为55%时,复合材料的缓冲性能相对最好;甘油的添加可以增加复合发泡材料的柔韧性,当其质量分数为14%时,复合材料的缓冲性能相对最好;NaHCO_3发泡剂的添加对复合发泡材料的缓冲性能影响较大,其质量分数为9%时,复合材料的缓冲性能相对最好。

Research on the Cushioning Performance of Starch Biodegradable Foams

Foaming composites were prepared by using the starch and EVA as the main ingredients, supplemented with glycerol, NaHCO3, wood powder additives and mould pressing through flat vulcanizing machine. Through the analysis of the static compression property, cushioning property of the composite foam was mainly studied with the influence of contents of starch, glycerin, NaHCO3 on the performance of cushioning property. The research showed that with the increase in starch content, the cushioning property of composite material was improved. The cushioning property was best when starch content was 55%. Adding Glycerin could increase the flexibility of the compound foam material. The cushioning property reached optimal when glycerin content was 14%. NaHCO3 content exerted major effects on cushioning property, and the cushioning property was optimal when NaHCO3 content was 9%.