Hybrid lattice structure with micro graphite filler manufactured via additive manufacturing and growth foam polyurethane

IF 5.3 Q2 MATERIALS SCIENCE, COMPOSITES Composites Part C Open Access Pub Date : 2024-10-01 DOI:10.1016/j.jcomc.2024.100516
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Abstract

The utilisation of lightweight structures is a common practice across a range of disciplines, including the construction of light steel frames, sandwich panels, and transportation infrastructure, among others. The advantages of lightweight structures include design flexibility, weight reduction, and the sustainability of materials that can be easily recycled. However, these advantages also present significant weaknesses. Compared to solid materials with compact weight, lightweight structures do not have the same characteristics. With the reduction in material weight, the strength of the lightweight structure decreases significantly compared to solid materials. In this study, the lightweight structure was made using additive manufacturing and reinforced with solid Composite Polyurethane Foam reinforced with graphite filler expanded into the lightweight structure. The results showed that in the compression test, the mixture with 2 % graphite filler had the highest value of 2.5 kN. The highest hardness test on the specimen with a 2 % graphite mixture was 19.8 HA. FT-IR testing showed that the carbon bonds from graphite in the 2 % specimen had the highest intensity. The test results showed that the addition of Polyurethane Foam into the structure could enhance material strength effectively without adding significant material weight.
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通过增材制造和生长泡沫聚氨酯制造出带有微石墨填料的混合晶格结构
轻质结构的应用在各个领域都很普遍,包括轻钢结构、夹芯板和交通基础设施等。轻质结构的优点包括设计灵活、重量减轻以及材料易于回收的可持续性。然而,这些优点也存在明显的缺点。与重量紧凑的固体材料相比,轻质结构不具备相同的特性。随着材料重量的减轻,轻质结构的强度与实心材料相比明显下降。本研究利用增材制造技术制作了轻质结构,并用固体复合聚氨酯泡沫增强石墨填料膨胀到轻质结构中。结果表明,在压缩试验中,含有 2% 石墨填料的混合物的压缩值最高,为 2.5 kN。含有 2% 石墨混合物的试样的最高硬度测试值为 19.8 HA。傅立叶变换红外测试表明,2% 的试样中石墨的碳键强度最高。测试结果表明,在结构中添加聚氨酯泡沫可有效提高材料强度,而不会增加大量材料重量。
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来源期刊
Composites Part C Open Access
Composites Part C Open Access Engineering-Mechanical Engineering
CiteScore
8.60
自引率
2.40%
发文量
96
审稿时长
55 days
期刊最新文献
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