基于热膨胀微球发泡的废纸纤维/淀粉复合发泡材料性能的研究

Study on the Properties of Waste Paper Fiber/Starch Composite Foam-based on Thermally Expandable Microsphere Foam Material

关键词:  玉米淀粉  废纸纤维  热膨胀微球  发泡材料

Key Words:corn starch  waste paper fiber  thermally expandable microsphere  foam material

摘要:本研究以玉米淀粉（CS）和数字印刷废纸纤维（DPWPF）为基材，热膨胀微球（EHM204）为发泡剂，采用加热烘焙方式制备DPWPF/CS复合发泡材料，研究了DPWPF含量对DPWPF/CS复合发泡材料各项性能的影响。结果表明，在DPWPF/CS复合发泡材料的制备中，EHM204可作为发泡剂，适量DPWPF的加入，能够改善淀粉基发泡材料的力学性能，当DPWPF含量为15%（相对于CS质量）时，制备的发泡材料的综合性能最佳，密度为0.66 g/cm³，发泡率为70%，硬度为70.00 HC，弹性比能为14.25×10⁴ J/m³，缓冲系数为4.21，回弹率达95.1%。

Abstract:In this paper， DPWPF/CS composite foams were prepared by heating baking with corn starch （CS） and digital printing waste paper fiber （DPWPF） as the substrate and thermally expandable microsphere （EHM204） as the blowing agent， and the effects of the DPWPF dosage on various properties of DPWPF/CS composite foams were investigated. The results showed that thermally expandable microspheres could be used as foaming agents in the preparation of DPWPF/CS composite foaming materials， and the addition of appropriate amount of DPWPF could improve the mechanical properties of starch-based foaming materials， and when the dosage of DPWPF was 15% （with respect to the mass of CS）， the prepared foaming materials had the best overall performances， with the density of 0.66 g/cm³， foaming rate of 70%， hardness of 70.00 HC ， elastic specific energy of 14.25×10⁴ J/m³， buffer coefficient of 4.21， and resilience of 95.1%.