以壓克力乳膠黏結氧化鋁粉製造快速原型之可行性研究

A study on the feasibility of Poly(methyl methacrylate) Resin Binding with Alumina Powder for Rapid Prototyping Technology

賴意誠(Yi-Cheng Lai)

指導教授 ： 莊賀喬

國立臺北科技大學/機電學院/製造科技研究所/碩士(2011年)

摘要

本文的主要目的是利用壓克力黏結劑之陶瓷漿料鋪設快速原型生坯並探討鋪層生坯之材料性質。
在材料方面，以0.5μm氧化鋁粉末為主基材，壓克力乳膠為主要黏結，目的是為了提升生坯強度。使用濕式刮刀鋪層，實驗發現只加入壓克力乳膠當黏結劑時，會因為壓克力韌性過低，無法抵抗鋪層表面受毛吸力作用破裂。因此加入少量的PVA提高薄層韌性。當PVA與壓克力乳膠重量比介於8.33%~12.5%之間是可以鋪層的。PVA與壓克力乳膠重量比為12%時，其生坯緻密度可達60.41%，生坯的三點抗彎強度29.78MPa。燒結後緻密度達99.95%，強度達416.24MPa。試片燒結後收縮率X方向17.63、Y方向18.32%與Z方向20.05%。

關鍵字

快速原型 ； 氧化鋁粉末 ； 壓克力

並列摘要

The goal of this study is to use the PMMA binder of ceramic slurry for paving the green body in rapid prototyping technology and to study the material properties of the green body.
In material, the 0.5μm Aluminum powder is chosen as the major material and the PMMA is used as the main binder to improve the strength of the green body.The cracks caused by the capillary function on the surface of the paving layer were observed when using the blade method for paving. It was found that the toughness of the PMMA becomes too weak after adding it as the binder. Thus, the toughness of layer of green body could be enhanced by adding a small amount of PVA. The layer paving could be realized when the weight ratio of the PVA and PMMA is maintained between 8.33%~12.5%. When this ratio was set to 12%, the green body has a relative density of 60.41% and a three-point bending strength of 29.78MPa. After the sintering process, the relative density of body was measured at 99.95% and the strength of 416.24MPa can also be reached. The shrinkages of the green body after sintering were measured at 17.63%, 18.32% and 20.05 % in X, Y, Z directions, respectively.

並列關鍵字

Rapid Prototyping ； Aluminum powder ； PMMA,

參考文獻

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