EVA/聚酰胺弹性体微孔发泡材料的制备与性能表征

选用乙烯?醋酸乙烯共聚物（EVA）与市面上制备工艺最成熟的聚酰胺12弹性体（PEBAX）共混挤出，制得EVA/PEBAX复合材料，再使用模压成型工艺将其进行化学发泡，制备出新型的EVA/PEBAX微孔发泡材料。结果表明，EVA/PEBAX复合材料可成功进行化学发泡，相比于传统EVA发泡材料，其性能有所提升，当PEBAX含量为5 %（质量分数，下同）、发泡剂含量为1 %时，性能最优；该聚酰胺弹性体基发泡材料不仅性能更优，同时还兼具了成本低的优势，具有替代传统EVA发泡鞋材的前景。

Preparation and Characterization of EVA/Nylon Elastomer Microcellular Foaming Materials

In this paper， ethylene?vinyl?acetate copolymer （EVA）/nylon elastomer compounds were prepared through melt extrusion using the most popular commercial product of PEBAX^{nylon 12. The resultant compounds were foamed to prepare a new type of EVA/nylon 12 microporous foaming materials. The experimental results indicated that the EVA/nylon 12 compounds were foamed successfully through a chemical method， and their foaming materials achieved an improvement in performance in comparison with the traditional EVA ones. The EVA/nylon 12 foaming materials obtained an optimal performance at a nylon 12 content of 5 wt% and a foaming agent content of 1 wt%. This type of nylon elastomer?based foaming materials has superiority in cost and performance， therefore it has a good prospect for the replacement of traditional EVA foamed materials used in shoes.}