| 新型聚羧酸系减水剂在建筑石膏中的应用研究 |
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| 引用本文： | 孙浩,龚雁,毛明富,倪忠斌,陈明清,刘士荣. 新型聚羧酸系减水剂在建筑石膏中的应用研究[J]. 新型建筑材料, 2011, 38(1) |
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| 作者姓名： | 孙浩 龚雁 毛明富 倪忠斌 陈明清 刘士荣 |
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| 作者单位： | 江南大学化学与材料工程学院,江苏,无锡,214122 |
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| 基金项目： | 江苏省高等学校科技创新团队项目资助 |
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| 摘 要： | 研究了聚羧酸系减水剂对建筑石膏流动度及石膏晶体形貌的影响.采用大分子单体法合成了新型聚羧酸减水荆PC-1,并与2种市售同类减水剂PC-S、PC-B进行比较.结果表明,聚羧酸型减水剂可以提高建筑石膏的流动性和强度.其中,PC-1掺量为1.5%时,减水率达21.4%;掺量为0.7%时,建筑石膏的抗折强度提高31%、抗压强度提高76%.其多种活性基团提高了螯合能力和分散稳定性,促使建筑石膏形成网状结构.
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| 关 键 词： | 聚羧酸减水剂 建筑石膏 流动度 |
Application study on building gypsum with polycarboxylate water reducer |
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| SUN Hao,GONG Yan,MAO Mingfu,NI Zhongbin,CHEN Mingqing,LIU Shirong. Application study on building gypsum with polycarboxylate water reducer[J]. New Building Materials, 2011, 38(1) |
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| Authors: | SUN Hao GONG Yan MAO Mingfu NI Zhongbin CHEN Mingqing LIU Shirong |
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| Affiliation: | SUN Hao,GONG Yan,MAO Mingfu,NI Zhongbin,CHEN Mingqing,LIU Shirong(School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,Jiangsu,China) |
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| Abstract: | Effects of the polycarboxylic water reducer on fluidity and crystal morphology of building gypsum were investigated.Novel polycarboxylic water reducer(PC-1)was first synthesized by using macromonomer method,then the comparison researches were done using two same kind of water reducers(PC-S,PC-B)on sale.The results show that the polycarboxylic water reducer can improve the fluidity and strength of building plaster.When the dosage of PC-1 is 1.5%,water-reducing rate of gypsum is up to 21.4%;and the tensile st... |
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| Keywords: | polycarboxylic water reducer building gypsum degree of fluidity |
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