快速原型系統的發展，提升了產品進入市場的速度，並加速企業研發新產品之腳步。各種快速原型系統中，三維噴印快速原型系統同時具有方便、迅速、容易、精確等優點。一般粉末噴印式快速原型系統以石膏或樹酯基材料為主之複合粉末，但於工業上石膏或樹酯基材料並不適合於製作金屬澆鑄模具，更有需要針對澆鑄模具用之粉末進一步的研究。
　　本研究以粉末材料為出發點，設計具有不同成型機制之複合粉末，並可適用於目前本研究團隊所開發的三維噴印快速原型平台之上。本研究以矽酸鈉、硫酸鈣與二氧化矽三種材料為主體，以各種粉末性質之測量結果，諸如粉末粒徑分佈、粉末密度、流動性等，討論各種粉末配比與性質之間的關係。最後於三維噴印快速原型平台中測試其粉末之成型性與成型強度。本研究結果指出以矽酸鈉與二氧化碳反應具有提升原型粗胚強度(Green part)之功效，且其測試之強度值約1.3 MPa。此研究結果有助於提升三維噴印快速原型之材料應用，以及快速模具製造之發展。

　The rapid prototyping has speed up production, research and development. In all kinds of the rapid prototyping, the three dimensional printer (3DP) is convenient, quick, easy, and accurate in plaster-based rapid prototyping system. Generally, the gypsum-based powder is the familiar material to use in the plaster-based 3DP. Because of the plaster-based powder still can not produce all kind of the casting molds on the industry, it is necessary to develop the powder compound suitable to produce the casting mold.
　This study bases on powder material to design the powder compound which has two different reactive mechanisms. It will discuss the relation between the composition of the powders and the powder property, such as the powder particle size distribution, apparent density and angle of repose. From the result in this study, the strength of green part built by the reaction of both sodium silicate and carbon dioxide is risen to 1.3 MPa. This result is eminently and can spread the materials application in 3DP and the development in the casting mold production.

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