楊申語Yang, Sen-Yeu臺灣大學:機械工程學研究所盧冠男Lu, Guan-NanGuan-NanLu2010-06-302018-06-282010-06-302018-06-282009U0001-3007200920350500http://ntur.lib.ntu.edu.tw//handle/246246/187230本研究探討LCP E130i於四種基本幾何形狀之現象，此四種基本幾何形狀為平板、圓弧、方波以及城垛型結構。主要射出參數為模溫以及射速，在模溫117℃以及模溫差90℃(母模117℃以及公模27℃)之下變化四種射速(45mm/s、90mm/s、135mm/s以及180mm/s)，探討纖維排向於翹曲之影響；在此模擬分析輔助觀察實驗結果。平板實驗中，當模溫為117℃時纖維排向對稱，翹曲量頗小；在模溫差90℃下，纖維排向不對稱性導致翹曲上升，結果指出纖維排向不對稱性以及中心層比例會影響到零件翹曲；圓弧以及方波纖維排向由於轉角效應，其排向不對稱性比平板大；在模溫差90℃下，翹曲量上升；針對城垛型結構實驗，在模溫117℃之下，由於零件厚度變化，纖維排向呈現更加不對稱；在模溫差90℃下，零件翹曲量下降。結果指出對於厚度變化之零件(例如城垛型結構)，模溫差可減少翹曲；本研究之成果可以應用改善分析之準確性。This study is devoted to investigating the effects of the four basic geometries on the fiber orientation of LCP E130i. The four basic geometries are the flat plate, the arc, the square wave and the battlement respectively. The major injection parameters are mold temperature and injection speed. To discuss the effects of fiber orientation on the warpage, we set two experimental temperature conditions: (1) the injection conditions of 117℃ mold temperature, and (2) 90℃ mold temperature difference between the male mold temperature of 27℃ and the female mold temperature of 117℃. Both of the conditions are operated at four various injection velocities (45mm/s, 90 mm/s, 135mm/s and 180 mm/s) in this experiment. The simulation analysis is also to assist the observation of experimental results. n the experiment of the flat plate, as the mold temperature is 117℃, the fiber orientations are symmetric, and the warpage of the parts are very small in various injection velocities. Under the temperature difference of 90℃, the non-symmetry of the fiber orientation leads to greater warpage. The results prove that the non-symmetry of the fiber orientation and the rate of core layer and part thickness have obvious influence on the warpage.The experimental results show that the distributions of fiber orientation in the arc and the square wave are more non-symmetric than that in the flat plate because of corner effect, and hence a greater warpage, especially in a molding parameter of the temperature difference of 90℃.or the experiment of battlements, the fiber orientations are more non-symmetric because the part has the thickness variance as the mold temperature is 117℃. The warpage of the part decreases in the temperature difference of 90℃. n conclusion, the results prove that adjusting the temperature difference can decrease the warpage when the part has the thickness variance such as the battlements shape. The results can be applied to improve the accuracy of simulation.致謝 I要 IIbstract III錄 V目錄 VII目錄 VIII一章 導論 1-1 前言 1-2 塑膠射出成型 1-3 電子零件材料 3-4 研究動機與目的 3-5 論文架構 4二章 文獻回顧 9-1 射出成型技術 9-2薄件射出成型 10-3 複合材料玻纖排向 11-3-1 纖維運動模式 11-3-2 玻纖排向分析與應用 13三章 實驗設備與實驗方法 20-1 概述 20-2 實驗材料與實驗設備 20-2-1 基材種類與物性 20-2-2 實驗設備 21-2-3 纖維排向觀察設備 22-3 實驗參數設計 22-3-1 公母模模溫差 22-3-2 融膠溫度 23-3-3 射速 23-4 實驗步驟 23-4-1 成型參數調整 23-4-2 成型參數之配置 24-4-3 公母模模溫差與射速變化之射出 24-4-4 翹曲量測量測 24-4-5 玻璃纖維排向觀察 25-5 玻璃纖維排向與射出零件翹曲之比對 25-6 模擬結果與實際結果之比對 25四章 模擬分析 43-1 LCP E130i模擬分析 43-2 平板模擬分析 43-3 圓弧模擬分析 44-4 方波模擬分析 44-5 城垛模擬分析 45五章 LCP E130i射出成型 58-1 LCP E130i流動概述 58-2 LCP E130i之平板射出成型 58-2-1 模溫117℃之平板翹曲與玻璃纖維排向之關係 59-2-2 模溫差90℃之平板翹曲與玻璃纖維排向之關係 60-3 LCP E130i之圓弧射出成型 61-3-1 模溫117℃之圓弧翹曲與玻璃纖維排向關係 61-3-2 模溫差90℃之圓弧翹曲與玻璃纖維排向關係 62-4 LCP E130i之方波射出成型 63-4-1 模溫117℃之方波翹曲與玻璃纖維排向關係 63-4-2 模溫差90℃之方波翹曲與玻璃纖維排向關係 64-5 LCP E130i之城垛結構射出成型 65-5-1 模溫117℃之城垛型結構翹曲與玻璃纖維排向關係 66-5-2 模溫差90℃之城垛型結構翹曲與玻璃纖維排向關係 66六章 結論與未來方向 92-1 結論 92.2 未來研究方向 93考文獻 95錄A LCP E130i性質表 98錄B FANUC α-15iA射出機規格 99錄C 作者簡介 101en-US纖維排向液晶高分子射出成型Fiber orientationLCPInjection moldingthesis