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研究生:鄭勝宇
研究生(外文):Sheng-Yu Jheng
論文名稱:急冷技術製備全聚酯自增強複合材料及其機械性質之研究
論文名稱(外文):The Preparation of All-Polyester Self-reinforced Composites by Rapid Cooling Technology and its Mechanical Properties
指導教授:蔡昆恊
口試委員:蔡昆恊李維平吳昌謀
口試日期:2014-06-16
學位類別:碩士
校院名稱:逢甲大學
系所名稱:纖維與複合材料學系
學門:工程學門
學類:紡織工程學類
論文種類:學術論文
論文出版年:2014
畢業學年度:102
語文別:中文
論文頁數:63
中文關鍵詞:自增強複合材料聚酯機械物性急冷技術
外文關鍵詞:self-reinforced compositepolyestermechanical propertiesrapid cooling technology
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本實驗使用2種差異熔點之聚酯(PET)纖維,運用包繞紗技術製作全PET自增強複合紗,並織造成織物,藉由高溫下熱擠壓成型及急冷技術製作全PET自增強複合材料,研究在此技術下製作全PET自增強複合材料,對其界面行為、機械物性、破壞模式變化等行為特性研究。
本文主要以不同織物組織,分別為2/2斜紋、2/2重平、3/3斜紋、3/3重平等四種織物組織,搭配高溫下熱擠壓成型及急冷技術去製作全PET自增強複合材料,之後對機械物性行為做研究,結果顯示拉伸破壞強度以2/2斜紋組織最大,可達161.90MPa;三點撓曲強度也以2/2斜紋組織最大,可達96.85MPa;衝擊能量吸收經向以3/3斜紋組織最佳,可達974.73(J/m),緯向除了3/3重平組織之外,其餘三種組織衝擊能量吸收差異不大,介於807.77(J/m)~819.47(J/m)之間。
與先前研究做比較[33],當加工溫度245 oC與持續時間為3分鐘時,常溫冷情況底下,機械物性有最佳數據,本實驗藉由此加工溫度(245 oC)搭配急冷技術去製作全PET自增強複合材料,並比較兩不同降溫系統下機械物性的差異。由實驗結果得知,以急冷技術製作之全PET自增強複合材料,拉伸強度的部分,2/2斜紋組織拉伸強度由89.34MPa提高到161.90MPa,2/2重平組織拉伸強度由76.44MPa提高到125.09MPa;三點撓曲強度的部分,2/2斜紋組織三點撓曲強度由73.58MPa提高到96.85MPa,2/2重平組織則變化較小;耐衝擊吸收能量部分,2/2斜紋組織衝擊吸收能量達937.23±86.88(J/m),2/2重平組織衝擊吸收能量達874.33±20.30(J/m)。
利用急冷技術製作全PET自增強複合材料,不僅可提高強度,也可增加生產速度。織物織造完熱擠壓成全PET自增強複合材料,時間只需耗時15分鐘,對於往後產業界應用無疑是縮短製程時間,增加複合材料的量產製造。
The experiment used two kinds of differences melting point of the polyester fiber, using the yarn surrounding technology to produce all self-PET reinforced yarn and woven fabric, and use hot compaction with high temperatures and rapid cooling techniques to prepare all self-PET reinforced composite materials, and study all self-PET reinforced composite materials, its interface behavior, mechanical properties, the failure mode changes the behavior characteristics of this technology.
In this paper, use four kinds of fabric weave, were 2/2 twill, 2/2 basket, 3/3 twill, 3/3 basket, and use hot compaction with high temperatures and rapid cooling techniques to prepare all self-PET reinforced composite materials, after doing research on the behavior and mechanical properties, the results show that the tensile strength of 2/2 twill is maximum of 161.90MPa; three-point flexural strength of 2/2 twill is maximum of 96.85MPa;In the impact energy absorbed by the 3/3 twill top up to 974.73 (J / m), in addition to the weft 3/3 basket, the impact energy absorbing tissue remaining three little difference between 807.77 (J / m) ~ 819.47 (J / m).
Compared with previous studies [33], when the processing temperature is 245 oC and duration 3 minutes, cooled at room temperature, has the best mechanical properties of the data, by the processing temperature of the experiment (245 oC) with rapid cooling technique to compare two different cooling systems in the mechanical properties under different. Experimental results show that, with rapid cooling technique production of all self-PET reinforced composite materials, the tensile strength portion, 2/2 twill tensile strength increased from 89.34MPa to 161.90MPa, 2/2 basket tensile strength increased from 76.44MPa to 125.09MPa; three flexural strength portion,2/2 twill three-point flexural strength increased from the 73.58MPa to 96.85MPa, 2/2 basket change was small; impact energy absorbing portion, 2/2 twill impact absorption energy was 937.23 ± 86.88 (J / m), 2/2 basket impact absorption energy was 874.33 ± 20.30 (J / m).
The use of rapid cooling technology can not only improve the strength, but also increase production speed. After weaving fabric to do all self-PET reinforced composite materials, only took 15 minutes, for subsequent application of the industry to shorten the process time is undoubtedly the increase in the amount of production of composite materials manufacturing.
第一章 前言…………………………………………………………………………1
1.1簡介………………………………………………………………………………..1
1.2文獻回顧…………………………………………………………………………..3
1.2.1自增強高分子複合材料製備………………………………………………...3
1.2.2熱塑型複合材料製備方法………………………………………………….10
1.3 研究動機………………………………………………………………………...12

第二章 包繞紗原理………………………………………………………………..13

第三章 實驗………………………………………………………………………..16
3.1實驗材料………………………………………………………………………….16
3.2實驗儀器………………………………………………………………………….18
3.3實驗流程………………………………………………………………………….19
3.4全PET包繞複合紗製備.…………….…………………………………………..21
3.5全PET梭織物製備.………………….…………………………………………..22
3.6全PET自增強複合材料製備.……….………………………….……………….23
3.7測試……………………………………………………………………….………26
3.7.1拉伸機械性質測試………………………………………………………….26
3.7.2三點撓曲機械性質測試…………….…………...………………………….28
3.7.3 衝擊機械性質測試.…………………………………………………….......30
3.8空孔含有率計算...……………………………………………………………….33

第四章 結果與討論………………………………………………………………..34
4.1全PET織物拉伸測試值…………………………………………………………34
4.2全PET自增強複合材料熔融行為與結晶型態.…………………….…….…….36
4.3急冷技術製作全PET自增強複合材料拉伸測試值.……………….….……….40
4.4急冷技術製作全PET自增強複合材料界面分析………………………………44
4.5急冷技術製作全PET自增強複合材料三點撓曲測試值………….….………..46
4.6急冷技術製作全PET自增強複合材料衝擊吸收能量測試值….…….………..50
4.7全PET自增強複合材料DMA分析…………………………………….………55

第五章 結論………………………………………………………………………..57

參考文獻……………………………………………………………………………..59
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