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研究生: 周佑霖
CHOU, Yu-Lin
論文名稱: 聚(丙烯酸/丙烯醯胺)/矽灰複合水膠的合成和性質研究
Study on the synthesis and properties of poly(acrylic acid-co-acrylamide)/silica fume composite hydrogel
指導教授: 許貫中
Hsu, Kung-Chung
學位類別: 碩士
Master
系所名稱: 化學系
Department of Chemistry
論文出版年: 2015
畢業學年度: 103
語文別: 中文
論文頁數: 95
中文關鍵詞: 陰離子型水膠無機複合型吸水率自養護劑砂漿抗壓強度水化程度
英文關鍵詞: anionic, hydrogel, inorganic composite, water absorbency, self-curing reagent, mortar, compressive strength, the degree of hydration
論文種類: 學術論文
相關次數: 點閱:148下載:0
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  • 本論文為製備兩種陰離子型的高吸水性水膠,polyacrylic acid/polyacryl amide ( P(AA/AM) )和polyacrylic acid/polyacryl amide/silica fume (P(AA/AM)/SF),起始劑為ammmonium persulfate (APS ),交聯劑為N,N’methylene bisacrylamide (MBA),使用FT-IR作結構鑑定,樣品表面孔洞透過SEM觀察,影響反應的參數包括:單體比例、起始劑劑量、交聯劑劑量、反應溫度和矽灰比例,接著浸泡到純水和鹽水及各種不同環境中測其吸水率。並測試兩種水膠的機械性質,包含抗壓強度。

    接著評估P(AA/AM)水膠加到水泥漿和水泥砂漿中作為自養護劑時,添加劑量和是否合宜,於水泥漿中探討其水化程度、圓盤裂縫和凝結時間;水泥砂漿中則探討水分重量損失、保水率、抗壓強度、內部濕度和乾縮量。
    實驗結果顯示,在最佳反應條件下,P(AA/AM)/SF水膠在純水中的吸水率為410.5(g/g),0.1M NaCl(aq) 和0.1M CaCl2(aq)的吸水率分別為43.4、24.4 (g/g)。抗壓強度為48.6(Kgf/cm2)。

    將P(AA/AM)水膠加入水泥砂漿中當自養護劑,最佳劑量為0.2(wt%) 和10(wt%)時,對水泥砂漿及水泥漿中的重量損失、抗壓強度,內部濕度、乾縮量和圓盤裂縫與控制組比較均提升效能。

    This main goal of thesis is to prepare two anionic superabsorbent hydrogel, polyacrylic acid / polyacryl amide ( P(AA/AM) ) and polyacrylic acid / polyacryl amide / Silica fume ( P(AA/AM)/SF ). Ammmonium persulfate (APS) and N,N’methylene bisacrylamide (MBA) were used as an initiator and crosslinking agent, respectively. Using FT-IR to identify structure, surface porosity is observed by SEM. The parameters what could be effected experiment are monomer ratio, initiator dosage, crosslinker dosage, reaction temperature and proportion of silica fume. We measure water absorbency of hydrogel in water, saline solution and variety of different situation and then test the mechanical properties, including compressive strength .
    We evaluate if P(AA/AM) hydrogel whose additive quantity is reasonablely applied to the grout and cement mortar as a self-curing agent. Then we researched hydration degree, cracking index, and setting time in grout. We calculated weight-loss, water retention,compressive strength, internal humidity, and drying shrinkage in cement mortar.
    The result indicate that P(AA/AM)SF hydrogel in the optimum reaction condition, the water absorbency is 410.5 g/g in water, and 40.4, 24.4 g/g in 0.1M NaCl(aq) and 0.1M CaCl2(aq),repectively. The compressive strength is 48.6 (Kgf / cm2).
    When we add P(AA/AM) hydrogel into mortar as self-curing reagent, the optimum dosage is 0.2 wt% , respectively, in this condition, improve the performance of weight-loss, compressive strength, internal humidity, drying shrinkage and craking formation. All the performance is better than the control group without P(AA/AM) hydrogel.

    摘要 i Abstract iii 目錄 v 圖目錄 x 表目錄 xiii 第一章 緒論 1 1-1 前言 1 1-2 研究目的 2 1-3研究內容 3 第二章 文獻回顧 4 2-1水膠簡介 4 2-2 影響水膠膨潤之作用力 5 2-2-1交聯密度 5 2-2-2 親水基對水的親和力比較 6 2-2-3 離子強度 6 2-2-4 鹽水溶液的影響 7 2-2-5水溶液之 pH 值 8 2-3水膠的種類 9 2-4有機/無機複合型水膠簡介 10 2-5 水泥 12 2-5-1 波特蘭水泥之組成 12 2-5-2 水泥之水化反應 12 2-6矽灰簡介 15 2-7混凝土收縮變形 16 2-7-1乾燥收縮(Drying Shrinkage) 16 2-7-2自體收縮(autogenous shrinkage) 16 2-7-3塑性收縮(plastic shrinkage) 16 2-8 水膠作為自養護劑的應用 17 第三章 水膠之合成與實驗流程 19 3-1 實驗流程 19 3-2 實驗材料與實驗設備 20 3-2-1 藥品 20 3-2-2 實驗儀器 22 3-3 實驗方法 23 3-3-1 P(AA/AM)之合成 23 3-3-2 P(AA/AM)/SF之合成 25 3-4 聚合物結構分析與鑑定 27 3-4-1 紅外光(IR)光譜分析 27 3-4-2 核磁共振 (1H-NMR) 光譜分析 28 3-4-3 電子顯微鏡 (JSM-6510) 表面結構 28 3-4-4 水膠吸水率之測量 29 3-4-5 水膠在不同pH值下吸水率 29 3-4-6 水膠在不同溫度下的吸水率 29 3-4-7 水膠在鹽水溶液吸水率 29 3-4-8 水膠在拌合水中的吸水率 30 3-4-9 水膠在Pore Solution中的吸水率 30 3-4-10 水膠抗壓強度之測量 30 3-5 添加水膠的水泥漿之性質分析 32 3-5-1 水泥漿試體之拌製 32 3-5-2 水泥漿凝結時間測試 33 3-5-3 水泥漿圓盤裂縫測試 33 3-5-4 粉末X-ray繞射分析儀(XRD) 34 3-6 添加水膠的水泥砂漿之性質分析 35 3-6-1 水泥砂漿試體之拌製 35 3-6-2 水泥砂漿試體重量損失量之測量 36 3-6-3水泥砂漿體內部濕度之測量 37 3-6-5 水泥砂漿試體抗壓強度之測量 37 3-6-6 水泥砂漿乾燥收縮之測量 38 第四章 結果與討論 40 4-1 聚合物之結構鑑定 40 4-1-1 單體1H NMR光譜 40 4-1-2 P(AA/AM) 1H光譜 40 4-1-3 單體紅外光光譜 40 4-1-4聚合物紅外光光譜 41 4-1-5 水膠表面形態鑑定 46 4-2 反應條件對P(AA/AM)水膠吸水率之影響 50 4-2-1 單體比例對P(AA/AM)水膠吸水率之影響 50 4-2-2起始劑劑量對P(AA/AM)水膠吸水率之影響 51 4-2-3交聯劑劑量對P(AA/AM)水膠吸水率之影響 53 4-2-4 反應溫度對P(AA/AM)水膠吸水率之影響 54 4-3 SF含量對P(AA/AM)/SF水膠吸水率之影響 55 4-4 水溶液環境對P(AA/AM)/SF水膠吸水率的影響 58 4-4-1鹽水溶液濃度對水膠吸水率之影響 58 4-4-2 pH值對水膠吸水率之影響 61 4-4-3 水膠在pore solution中的吸水率 62 4-5 矽灰含量對水膠抗壓強度的影響 66 4-6 P(AA/AM)水膠對水泥砂漿性質的影響 67 4-6-1水膠劑量對水泥砂漿重量損失的影響 67 4-6-2水膠劑量對水泥砂漿內部濕度的影響 70 4-6-3水膠劑量對水泥砂漿抗壓強度的影響 72 4-6-4水膠劑量對水泥砂漿乾縮量的影響 75 4-7 P(AA/AM)水膠對水泥漿性質的影響 77 4-7-1 水膠劑量對水泥漿凝結時間的影響 77 4-7-2 XRD分析 78 4-7-3 水膠劑量對水泥漿圓盤裂縫的影響 82 第五章 結論 85 第六章 參考文獻 87

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