Purpose

Traditional simulation research of geological and similar engineering models, such as landslides or other natural disaster scenarios, usually focuses on the change of stress and the state of the model before and after destruction. However, the transition of the inner change is usually invisible. To optimize and make models more intelligent, this paper aims to propose a perceptible design to detect the internal temperature change transformed by other energy versions like stress or torsion.

Design/methodology/approach

In this paper, micron diamond particles were embedded in 3D printed geopolymers as a potential thermal sensor material to detect the inner heat change. The authors use synthetic micron diamond powder to reinforced the anti-corrosion properties and thermal conductivity of geopolymer and apply this novel geopolymer slurry in the direct ink writing (DIW) technique.

Findings

As a result, the addition of micron diamond powder can greatly influence the rheology of geopolymer slurry and make the geopolymer slurry extrudable and suitable for DIW by reducing the slope of the viscosity of this inorganic colloid. The heat transfer coefficient of the micron diamond (15 Wt.%)/geopolymer was 50% higher than the pure geopolymer, which could be detected by the infrared thermal imager. Besides, the addition of diamond particles also increased the porous rates of geopolymer.

Originality/value

In conclusion, DIW slurry deposition of micron diamond-embedded geopolymer (MDG) composites could be used to manufacture the multi-functional geological model for thermal imaging and defect detection, which need the characteristic of lightweight, isolation, heat transfer and wave absorption.

中文翻译：

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直写法制备金刚石/偏高岭土地质聚合物的流变效应及导热性增强

目的

地质及类似工程模型的传统模拟研究，如滑坡或其他自然灾害情景，通常侧重于应力变化和模型破坏前后的状态。然而，内在变化的转变通常是不可见的。为了优化模型并使模型更加智能，本文旨在提出一种可感知的设计，以检测由其他能量版本（如应力或扭转）转换的内部温度变化。

设计/方法/方法

在本文中，微米级金刚石颗粒嵌入 3D 打印地质聚合物中，作为潜在的热传感器材料来检测内部热变化。作者使用合成微米级金刚石粉末来增强地质聚合物的防腐性能和导热性，并将这种新型地质聚合物浆料应用于直接墨水书写 (DIW) 技术。

发现

因此，微米级金刚石粉末的加入可以极大地影响地质聚合物浆料的流变性，并通过降低这种无机胶体的粘度斜率使地质聚合物浆料可挤出并适用于DIW。微米级金刚石 (15 Wt.%)/地质聚合物的传热系数比纯地质聚合物高 50%，可以通过红外热像仪检测到。此外，金刚石颗粒的加入也提高了地聚合物的孔隙率。

原创性/价值

总之，微米级金刚石嵌入地质聚合物（MDG）复合材料的DIW浆料沉积可用于制造用于热成像和缺陷检测的多功能地质模型，该模型需要具有轻量化、隔离、传热和吸波的特性。