不同丙烯酸酯純化後對水泥系材料性質之影響

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李政鴻(Zheng-hong Li) 查詢紙本館藏

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土木工程學系

論文名稱

不同丙烯酸酯純化後對水泥系材料性質之影響
(In study on different acrylate through the use of H2O2 purification and results of cementitious materials)

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摘要(中)

本研究以不同醇類與丙烯酸進行酯化反應後所得之丙烯酸酯聚合物，透過使用過氧化氫純化處理，將丙烯酸酯中影響混凝土耐久性之醇類移除，探討純化後之丙烯酸酯聚合物對水泥系材料性質之影響。將純化後之丙烯酸酯分別加入水泥漿、水泥砂漿和混凝土進行基本物理試驗，評估純化後之丙烯酸酯聚合物對水泥系材料之影響。綜合評估試驗結果，丙烯酸酯聚合物經雙氧水純化處理後，在適當的配比下，對水泥材料力學性質和耐久性有適度之改質成效，其中丙烯酸和二乙二醇莫爾比為1 : 0.29，反應生成之丙烯酸二乙二酯聚合物在最佳酯化率下，添加1.0 %雙氧水純化處理後，其改質成效最為顯著。在水泥及材料新拌性質方面，純化後之丙烯酸酯隨著添加量增加，水泥系材料流動性會隨之增加；水泥漿凝結時間亦隨著雙氧水用量增加，有縮短初、終凝的現象；在硬固水泥砂漿性質方面，固定聚合物添加0.1 %時，具有最佳之成效，其抗壓強度較控制組可提高15.06~22.87 %，且抗彎和黏結強度亦較控制組優良；添加純化後之丙烯酸酯對於水泥砂漿乾縮量無明顯收縮現象。混凝土基本性質試驗結果顯示，添加純化後之丙烯酸二乙二酯，其28天抗壓強度較控制組可提高14.1 %，純化後之丙烯酸酯可延長混凝土受高溫環境下，試體強度提早折減之影響。

摘要(英)

In this study, the removal of redundant alcohol of acrylate that affects concrete durability are carried out in different alcohols and acrylic acid derived from the etherification reaction of acrylic ester polymer through the use of H2O2 purification. Discussion on the impact of purified acrylic polymer to cement materials is also done. After purification by adding acrylic, basic physical property test are carried out on the cement, cement mortar, and concrete.
Comprehensive evaluation of the test results indicates that for acrylate polymer treated with H2O2 purification, the most significant modification to the concrete materials properties and durability was achieved when the Moore ratio of acrylic acid and diethyl glycol is 1:0.29; the reaction of acrylic acid and diethyl ester polymer yielded the best possible result with the addition of 1.0 % H2O2 purification treatment.
In the fresh cement mortar, the addition of purified acrylate addition to cement materials will cause an increase in mobility workability; slurry setting time will also increase with the amount of H2O2 due to the shortening of the beginning of the end of condensate phenomenon. In the hardened cement mortar with 1 % polymer addition, the compressive strength increased 15.06-22.87 % compared to the control group, the flexural bond strength is also better than the control group. The addition of purified acrylic cement mortar also prevented the occurrence of dry shrinkage. Result of testing on the basic properties of concrete shows that the addition of purified diethyl’s esters of acrylic acid increased the 28 days compressive strength by 14.1 % compared to the control group. When purified acrylic uses are extended to the higher temperature environment of concrete, the early strength of the concrete are reduced.

關鍵字(中)

★ 丙烯酸酯
★ 純化
★ 酯化反應

關鍵字(英)

★ Purify
★ Acrylate
★ Etherification reaction

論文目次

第一章緒論 ............................................................................................................... - 1 -
1.1 研究動機 .......................................................................................................... - 1 -
1.2 研究目的 .......................................................................................................... - 1 -
1.3 研究內容 .......................................................................................................... - 2 -
第二章文獻回顧....................................................................................................... - 4 -
2.1 高分子聚合物基本結構 .................................................................................. - 4 -
2.1.1 聚合物組成與單體結構[4] ........................................................................ - 4 -
2.1.2 聚合物反應機理[4] .................................................................................... - 4 -
2.1.3 聚合物與水泥之物理性結合反應 ........................................................... - 4 -
2.1.4 聚合物與水泥之化學性結合反應 ........................................................... - 4 -
2.2聚合物歷史發展簡述 ....................................................................................... - 5 -
2.3 聚合物應用型態 .............................................................................................. - 6 -
2.4 聚合物改質水泥基材類型 .............................................................................. - 9 -
2.4.1 聚合物水泥複合材料種類 ....................................................................... - 9 -
2.4.2 聚合物改質水泥系材料類型 .................................................................- 10 -
2.4.3 聚合物於各國發展概況 .........................................................................- 12 -
2.4.4 聚合物改質機理模型 .............................................................................- 13 -
2.4.5 聚合物改質砂漿孔隙成效[28] .................................................................- 15 -
2.5 丙烯酸系聚合物概述[28] ................................................................................ - 17 -
2.5.1 丙烯酸系聚合物與水泥系材料之改質機理 .........................................- 17 -
2.5.2 丙烯酸系相關文獻概述 .........................................................................- 18 -
第三章試驗計畫.....................................................................................................- 21 -
3.1 試驗規劃與試驗流程 .................................................................................... - 21 -
3.1.1 試驗規劃 .................................................................................................- 21 -
3.1.2 試驗流程 .................................................................................................- 23 -
3.2 試驗材料 ........................................................................................................ - 29 -
3.3試驗設備與儀器 ............................................................................................. - 34 -
3.4 試驗項目及方法 ............................................................................................ - 40 -
3.4.1 丙烯酸酯聚合物化學反應 .....................................................................- 41 -
3.4.2 製作丙烯酸酯聚合物及純化處理 .........................................................- 43 -
3.4.3 改質水泥漿試驗 .....................................................................................- 44 -
3.4.4 改質水泥砂漿試驗 .................................................................................- 45 -
3.4.5改質混凝土試驗 ......................................................................................- 50 -
第四章結果與討論.................................................................................................- 52 -
4.1 丙烯酸酯變數控制 ........................................................................................ - 52 -
4.1.1 反應溫度與反應時間影響 .....................................................................- 52 -
4.1.2 催化劑濃度影響 .....................................................................................- 53 -
4.2 最佳酯化率與純化丙烯酸酯 ........................................................................ - 56 -
4.2.1 最佳酯化率之計算 .................................................................................- 58 -
4.2.2純化丙烯酸酯之方法 ..............................................................................- 61 -
4.3 丙烯酸酯聚合物改質水泥漿性質 ................................................................ - 62 -
4.3.1 新拌性質 .................................................................................................- 62 -
4.3.2 改質水泥漿之工作性 .............................................................................- 63 -
4.3.3 改質水泥漿之凝結時間 .........................................................................- 71 -
4.3.4 丙烯酸酯改質水泥漿體硬固性質 .........................................................- 75 -
4.4 丙烯酸酯聚合物改質水泥漿體性質試驗小結 ............................................ - 80 -
4.5 丙烯酸酯聚合物改質水泥砂漿性質 ............................................................ - 82 -
4.5.1 新拌水泥砂漿性質 .................................................................................- 82 -
4.5.2 水泥砂漿吸水率 .....................................................................................- 85 -
4.5.3 砂漿初始吸水速率 ................................................................................- 87 -
4.5.4 改質水泥砂漿力學試驗 .........................................................................- 89 -
4.5.6 改質砂漿固定水灰比0.55與固定流度值110±5 %之強度差異 ........- 97 -
4.5.7 水泥砂漿健性試驗 ................................................................................- 98 -
4.5.8 乾燥收縮(Drying shrinkage)試驗 ..........................................................- 99 -
4.5.9 丙烯酸酯聚合物改質水泥砂漿性質試驗小結 ...................................- 100 -
4.6 丙烯酸酯聚合物改質混凝土的性質 ......................................................... - 102 -
4.6.1 新拌混凝土性質 ...................................................................................- 102 -
4.6.2 抗壓強度 ...............................................................................................- 103 -
4.6.3 超音波波速量測 ....................................................................................- 105 -
4.6.4 混凝土模擬火害窯燒實驗 ...................................................................- 106 -
第五章結論與建議...............................................................................................- 109 -
5.1 結論 .............................................................................................................. - 109 -
5.2 建議 .............................................................................................................. - 111 -
參考文獻 ................................................................................................................. - 112 -

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指導教授

李釗(Chau Lee)

審核日期

2009-7-17

推文