本研究主要著重在以熱壓技術製作鑽石複合研磨盤，實驗使用聚氨酯(PU)高分子材料為研磨盤之基材，分別添加不同比例鑽石磨粒與奈米二氧化鈦於基材內，實驗利用田口方法找出最佳研磨盤製作參數，以L18直交表，即不同成份比例之鑽石研磨盤實際進行研磨實驗，量測不同成分比例鑽石研磨盤研磨試片表面粗糙度值及摩擦係數變化趨勢進行探討，得知試片表面粗糙度會隨研磨時間增加而有下降現象，且根據表面粗糙度田口回應表及變異數分析之結果，最佳化製程參數鑽石重量比例為0.04g、熱壓壓力為210N、鑽石形狀尺寸為Type 2，而摩擦係數趨勢方面，TiO2添加比例0.09g穩定程度較添加比例0.045g好，更優於未添加。
而研磨盤在研磨過程中伴隨著磨耗現象產生，因此本實驗進一步針對聚氨酯基材進行磨耗實驗，實驗得知PU基材磨耗率約為PU加TiO2複合材近兩倍，且發現高分子基材與碳鋼在磨耗過程中，於接觸界面會生成轉移膜，轉移膜具有優良之抗磨耗性、剪力作用，其代表添加奈米TiO2顆粒之複合材料，其基材表現出較高耐磨損性和較低摩擦係數表現，可大幅增強基材之承載能力。

In this study, the effect of TiO2 Nano-powders in the polymer-based diamond disk is investigated. The disk was made by compression molding technology. The polyurethane was used as the matrix material of the diamond grinding disk and nano-TiO2 was also added into the composite with different proportions. Taguchi method was employed to design the experiments. The surface roughness and friction coefficient were measured and analyzed by ANOVA method. The results show the optimal conditions for the diamond disk are diamond weight of 0.04 g, the compression force of 210 N, and the RB type 2 diamond powders with the mean size of 7.41 μm. In addition, the TiO2 added diamond disk is much stable than the others.
In the tribological experiments of polyurethane with and without TiO2 Nano-powders, the results show that the wear rate of pure polyurethane is about two times than the polyurethane with TiO2. It was also found that the transfer film was generated on the surface of steel. The formation of transfer film can increase wear resistance and produce lower shear performance. The results show that when nano-TiO2 particles are added to the composite material, the matrix has high wear resistance and low friction coefficient performance, which significantly enhance the carrying capacity of the polyurethane Nano-composite.

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