Mechanical Properties Improvement in Highly and Aligned Dispersed Graphene Oxide/Bismaleimide Nanocomposites based on Graphene Oxide Sponge,Advanced Engineering Materials

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Mechanical Properties Improvement in Highly and Aligned Dispersed Graphene Oxide/Bismaleimide Nanocomposites based on Graphene Oxide Sponge
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-06-03 , DOI: 10.1002/adem.202000231
Xu Zhao ₁ , Min Zhou ₁ , Qingyu Peng _{1,

2} , Renjie Ding ₁ , Pengyang Li ₁ , Qiang Chen ₁ , Liangliang Xu ₁ , Xiaodong He _{1,

2}

Affiliation

Graphene oxide (GO) as an excellent nanofiller is widely used to improve the mechanical properties of the resin matrix. The dispersion and distribution of GO sheets in the resin matrix have a strong impact on the mechanical properties of composites. Based on the action principle of GO sponge, a simple method for solving the highly and aligned dispersion of GO in the bismaleimide (BMI) resin is investigated. The GO bulk prepared by vacuum infusion using a porous GO sponge as a frame is smashed in the resin by the large shear force generated through the high‐speed stirring method. It is found that GO sheets have a highly dispersion in the BMI resin. A sample and new method for preparing GO aligned dispersion in resin by large deformation is provided to further enhance the mechanical properties of the resin. As expected, the flexural strength and flexural modulus of GO/BMI nanocomposites are enhanced by 39.6% and 45.5% than BMI resin. This simple dispersion method is easier to generalize to solve the dispensability of GO in other kinds of resins. In the future, there will be a broader application prospect in engineering applications.

中文翻译：

基于氧化石墨烯海绵的高度取向的分散型氧化石墨烯/铋对苯二酰亚胺纳米复合材料的力学性能改进

氧化石墨烯（GO）作为一种出色的纳米填料，被广泛用于改善树脂基体的机械性能。GO片在树脂基体中的分散和分布对复合材料的机械性能有很大影响。根据GO海绵的作用原理，研究了一种简单的方法来解决GO在双马来酰亚胺（BMI）树脂中的高度均匀的分散。通过高速搅拌法产生的大剪切力，将使用多孔GO海绵作为框架的真空灌注制备的GO块在树脂中粉碎。发现GO片材在BMI树脂中具有高度分散性。提供了通过大变形制备GO取向的树脂分散体的样品和新方法，以进一步增强树脂的机械性能。不出所料与BMI树脂相比，GO / BMI纳米复合材料的弯曲强度和弯曲模量分别提高了39.6％和45.5％。这种简单的分散方法更易于推广，以解决GO在其他种类树脂中的分散性。将来，在工程应用中将有更广阔的应用前景。

更新日期：2020-06-03

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