小分子減水劑的合成及性能研究

生物工程論文編號:SW042  論文字數:9962,頁數:26

目  錄

中文摘要 I
英文摘要 II
目錄 III
1. 緒論 1
 1.1  課題研究背景及意義 1
 1.2 文獻綜述 1
 1.3  課題的提出 7
2. 實驗部分 8
 2.1    試驗材料 8
 2.2   實驗設備 8
 2.3  實驗方法 8
3. 結果與討論 11
 3.1  MPEG/馬來酸酐單酯紅外圖譜 11
 3.2  MPEG/馬來酸酐酯化反應 12
 3.3  無催化劑單酯化反應的活化能計算 15
 3.4  正交實驗分析 17
 3.5  酯化產物水泥凈漿流動度的實驗 18
4.  總結與展望 20
致謝 21
參考文獻 22

摘 要：本文研究了甲氧基聚乙二醇/馬來酸酐酯化反應，此反應產物可作為小分子減水劑。詳細考察了反應時間、溫度、MPEG的分子量、原料摩爾比、及催化劑用量等因素對馬來酸酐和甲氧基聚乙二醇酯化率的影響，從而確定了最佳工藝條件。
 通過紅外表征了酯化產物的結構，對反應因素（反應時間、溫度、MPEG的分子量、原料摩爾比、及催化劑用量等）進行正交分析,并且計算了活化能。同時初步研究了酯化產物在水泥中作為小分子減水劑的應用效果,并得到較好的減水效果。
關鍵詞:  酯化反應； 小分子減水劑；甲氧基聚乙二醇；馬來酸酐 

Synthesis and Performance of  Small Water-reducing Agent
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Abstract: The reaction of esterification from methoxy polyethylene glycol (MPEG) and maleic anhydride were studied in this article, and the product can be used as small water-reducing agent .The effects of time, temperature, molecular weight of MPEG and the feed ratio on the esterification degree of methoxy polyethylene glycol and maleic anhydride were investigated in details, and then the optimum reaction condition was determined.
  The structure of  product was characterized by  IR, the reaction conditions such as  time, temperature, weight of MPEG, the feed ratio etc  were analyzed by  orthogonal method.The activation energy was obtained. Meanwhile the application of     product  as  water-reducing agent was explored, and get a good result . 

Keywords: Esterification; Small water-reducing agent; Methoxy polyethylene glycol; Maleic anhydride