Purpose

Traditional nanocomposite production methods such as in situ polymerization, melt blending and solvent technique, have some deficits. Some of these are non-homogeneous particle distribution, setup difficulties, time-consuming and costly. On the other hand, three-dimensional printing technology is a quite popular method. Especially, Stereolithography (SLA) printing offers some benefits such as fast printing, easy setup and smooth surface specialties. Furthermore, surface modification of Graphene Oxide (GO) and its effects on polymer nanocomposites are quite important. The purpose of this study is to examine the effect of surface modification of GO nanoparticles on the mechanical properties and morphology of epoxy acrylate (BisGMA/1,6 hexane diol diacrylate) matrix nanocomposites.

Design/methodology/approach

In this study, Ultraviolet (UV) curable end groups of synthesized resin were linked to functional groups of graphene oxide, which are synthesized by the Tour method, which is a kind of modified Hummer method. In addition, synthesized GO nanoparticle’s surfaces were modified by 3-(methacryloyloxy) propyl trimethoxysilane. Significant weight percentages of GO were added into the epoxy acrylate resin. Different Wt.% of modified graphene oxide/acrylate resins was used to print test specimens with SLA type three-dimensional printer.

Findings

Surface modification has a significant effect on tensile strength for graphene oxide nanoparticles contained composites. In addition, a specific trend was not observed for tensile test results of non-modified graphene oxide. The tendency of impact and hardness test finding were similar for both surfaces modified and non-modified nanoparticles. Finally, the distribution of particles was homogeneous.

Originality/value

This paper is unique because of the inclusion of both surface modifications of graphene oxide nanoparticles and SLA production of nanocomposites with its own production of three-dimensional printer and photocurable polymer resin.

中文翻译：

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通过 SLA 生产氧化石墨烯/环氧丙烯酸酯纳米复合材料以及氧化石墨烯表面改性对机械性能的重要性

目的

传统的纳米复合材料生产方法，如原位聚合、熔融共混和溶剂技术，存在一些不足。其中一些是不均匀的颗粒分布、设置困难、耗时且成本高。另一方面，三维打印技术是一种相当流行的方法。特别是立体光刻 (SLA) 印刷提供了一些优势，例如快速印刷、易于设置和光滑的表面特性。此外，氧化石墨烯（GO）的表面改性及其对聚合物纳米复合材料的影响非常重要。本研究的目的是检查 GO 纳米粒子的表面改性对环氧丙烯酸酯（BisGMA/1,6 己二醇二丙烯酸酯）基体纳米复合材料的机械性能和形态的影响。

设计/方法/方法

在这项研究中，合成树脂的紫外（UV）固化端基与氧化石墨烯的官能团相连，这些官能团是通过 Tour 方法合成的，这是一种改进的 Hummer 方法。此外，合成的 GO 纳米颗粒的表面被 3-(甲基丙烯酰氧基) 丙基三甲氧基硅烷改性。将大量重量百分比的 GO 添加到环氧丙烯酸酯树脂中。使用不同重量百分比的改性氧化石墨烯/丙烯酸酯树脂，用 SLA 型三维打印机打印测试样品。

发现

表面改性对含有氧化石墨烯纳米粒子的复合材料的拉伸强度有显着影响。此外，未改性氧化石墨烯的拉伸测试结果未观察到特定趋势。表面改性和未改性纳米粒子的冲击和硬度测试结果的趋势相似。最后，粒子的分布是均匀的。

原创性/价值

这篇论文是独一无二的，因为它同时包含了氧化石墨烯纳米粒子的表面改性和纳米复合材料的 SLA 生产，以及自己生产的三维打印机和光固化聚合物树脂。