| 一种新型水煤浆聚羧酸分散剂大单体的制备 |
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| 引用本文： | 任军哲,魏辉,张光华,张亚青.一种新型水煤浆聚羧酸分散剂大单体的制备[J].应用化工,2011,40(3):411-413. |
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| 作者姓名： | 任军哲 魏辉 张光华 张亚青 |
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| 作者单位： | 1. 陕西煤化能源有限公司,陕西,长武,713600
2. 教育部轻化工助剂化学与技术重点实验室,陕西科技大学,陕西,西安,710021 |
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| 基金项目： | 陕西省自然科学基金重点项目，陕西科技大学研究生创新基金 |
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| 摘 要： | 为探索一种优化的聚羧酸系分散剂大单体生产工艺,以衣康酸、聚乙二醇为原料,考察了反应物配比、反应时间、反应温度、催化剂对活性大单体酯化率的影响。实验表明,较佳反应条件为:催化剂为对甲苯磺酸,n(衣康酸)∶n(聚乙二醇)=1∶1.5,反应温度为85℃,反应时间5 h。表面性能研究结果表明,该表面活性剂有较好的表面活性,在25℃下c,mc为5.01 mmol/L,在cmc时的γ=47.1 mN/m,Krafft点<0℃。
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| 关 键 词： | 聚乙二醇 聚羧酸大单体 水煤浆 合成 |
Synthesis of a macromer for polycarboxylate acid CWS additive |
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| REN Jun-zhe,WEI Hui,ZHANG Guang-hua,ZHANG Ya-qing.Synthesis of a macromer for polycarboxylate acid CWS additive[J].Applied chemical industry,2011,40(3):411-413. |
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| Authors: | REN Jun-zhe WEI Hui ZHANG Guang-hua ZHANG Ya-qing |
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| Affiliation: | REN Jun-zhe1,WEI Hui2,ZHANG Guang-hua2,ZHANG Ya-qing2 (1 Shaanxi Carbonification Energy Co.,LTD.,Changwu 713600,China,2 Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry,Ministry of Education,Shaanxi University of Science & Technology,Xi'an 710021,China) |
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| Abstract: | In order to explore an optimized process for preparing a novel itaconic acid,polyethylene glycol as raw materials were used.The influences of reaction parameters on the esterification rate,such as reactants ratio,time,temperature and solvent,were researched.The optimal reaction conditions for the synthesis were as follows:n(IA) ∶ n(PEG)=1 ∶ 1.5,reaction temperature 85 ℃ and reaction time 5 h.The surface properties of the product were determined.The results showed that the emulsifier possessed good surface activity,at 25 ℃ the micelle concentration(cmc) is measured as 5.01 mmol/ L,surface tension(γ) at the cmc is measured as 47.1 mN/m and Krafft point < 0 ℃. |
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| Keywords: | polyethyiebe polycarboxylate macromer coal water slurry synthesis |
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