應用實驗設計法於透氣防水膜製程參數最佳化之研究

A Study on Optimization of Process Parameter for Breathable waterproof Membrane with Experimental Design Method

吳政霖(Cheng-lin Wu)

指導教授 ： 林世章

國立虎尾科技大學/工程學院/機械與機電工程研究所/碩士(2014年)

https://doi.org/10.6827/NFU.2014.00089

摘要

在塑膠產業供應鏈中，混煉加工製程對於下游產品應用上扮演著重要角色。一般產業製程中，操作員所選定之材料、製程環境參數絕大多數來自於工程知識與經驗，雖於業界廣泛接受但卻並非取得最佳製程參數的最有效率程序。為此，本文將利用田口實驗設計法結合反應曲面法，提出混煉製程最佳化程序設計，除了能有效尋找到最佳製程參數外，亦可對混合物之混煉品質提供有效的檢驗方式。藉由本研究將可提供相關產業製程參數之程序設計的參考，相信對製程效率將有明顯的助益。
本研究係針對利用低密度聚乙烯為製程母體，混掺添加劑奈米碳酸鈣進行雙螺桿混煉實驗。首先，以田口方法規劃直交表實驗作為第一階段之製程參數評估，依其貢獻度尋找出對產品品質特性具顯著影響的因子。研究中，將利用電子顯微鏡與影像處理軟體分析奈米碳酸鈣於混煉後混合物中所佔的面積比。研究中係利用統計分析建立第一階段實驗數據，其間樣本統計量分別以點估計及區間估計之方法估計奈米碳酸鈣面積統計值。接著，於第二階段，透過反應曲面法再建構田口法分析所得之顯著因子與目標函數間的數學模型，以進一步尋找出最佳因子水準的參數組合及其最佳解。最後，將此參數組合進行實驗，並以95%信賴水準之區間估計驗證此最佳解之準確性。
由本文所提出製程最佳化設計程序係引用田口實驗計劃法，可事先篩選出目標顯著因子，故可減少反應曲面法實驗的次數，此設計程序亦可於所設定之範圍內快速搜尋奈米碳酸鈣分布之最佳設計值，以改善田口實驗法之缺點。

關鍵字

最佳製程設計 ； 雙螺桿混煉加工 ； 田口設計法 ； 反應曲面法

並列摘要

In the revertex industry supply chain, the mixed iron-smelting processing system regulation is acting the strong character regarding the downstream product application in. In the general industrial system regulation, material of, the system regulation environment parameter the operator designation majority comes from the project knowledge and the experience, but although widely accepts in the field by no means obtains the best system regulation parameter actually the most effective procedure. Therefore, this article will design the law union response curved surface law using the field mouth experiment, proposed will mix the refinement regulation optimization programming, besides will be able to seek effectively to the best system regulation parameter, also might provide the effective examination way to mixed iron-smelting of quality the mixture. Might provide of programming the correlation industry system regulation parameter reference because of this research, believed will have obvious being of help to the system regulation efficiency.
This study adopted low-density polythylene as a process precursor, performing a twin-screw compounding experiment by incorporating a nano calcium carbonate additive. In the first stage of this study, the Taguchi method was used to design an orthogonal array experiment, which involved process parameter evaluation. Subsequently, the factors that considerably influenced product quality characteristics were determined based on the degree of contribution. This study then employed electron microscope and image processing software to analyze the ratio of nano calcium carbonate area in the mixed compound. Statistical analysis was conducted to obtain data for the first stage of the experiment. Sample statistics involved using the point and interval estimation methods to estimate the statistical value of the nano calcium carbonate area. In the second stage of the study, the response surface methodology was used to rebuild the mathematical model based on significant factors and target functions obtained through the Taguchi analysis. The model was then used to determine the optimal factor parameter combination and its optimal solution. Finally, the parameter combination was tested at a confidence interval of 95% to verify the accuracy of the optimal solution.
By this article proposed the system regulation optimization design regulation series quotation field mouth test plan law, may screen the goal remarkable factor beforehand, therefore may reduce the response curved surface law experiment the number of times, this design procedure also may scope of in the hypothesis the fast search nano calcium carbonate distribution the best design value, improves shortcoming of the field mouth cut-and-try method.

並列關鍵字

Optimization of Process Design ； Twin-screw kneading processing ； Taguchi Methodology ； Response Surface Method.

參考文獻

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