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蛋白类缓凝剂对建筑石膏的适应性
Adaptability of Protein Retarder for Calcined Gypsum
投稿时间:2017-06-03  修订日期:2017-09-01
DOI:103969/j.issn.1007 9629201804013
中文关键词:  建筑石膏  蛋白类缓凝剂  酰胺基团  磷酸盐
英文关键词:calcined gypsum  protein retarder  amide group  phosphate
基金项目:四川省科研院所科技成果转化资金资助项目
           
作者单位
黄滔
HUANG Tao
重庆大学材料科学与工程学院,重庆400045
College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
彭小芹
PENG Xiaoqin
重庆大学材料科学与工程学院,重庆400045
College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
王淑萍
WANG Shuping
重庆大学材料科学与工程学院,重庆400045
College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
邱峰
QIU Feng
四川省建材工业科学研究院,四川成都610081
Sichuan Research Institute of Building Materials Technology, Chengdu 610081, China
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中文摘要:
      分析比较了4种分子结构相近的蛋白类缓凝剂对脱硫建筑石膏(FGD)和磷建筑石膏(PG)的缓凝效果.结果表明:具有不同酰胺键类型的蛋白类缓凝剂,其缓凝度受建筑石膏类型影响,且随建筑石膏pH值的增加而增大;当蛋白类缓凝剂的酰胺基团主要为仲酰胺时,其缓凝度随着H2PO-4含量的增加而降低,当蛋白类缓凝剂的酰胺基团主要为伯酰胺时,其缓凝剂不易受H2PO-4的影响;用于FGD的蛋白类缓凝剂宜选用仲酰胺为主的酰胺基团,用于PG的蛋白类缓凝剂宜选用伯酰胺为主的酰胺基团.
英文摘要:
      Four kinds of protein with similar molecular structure were chosen as the retarder of calcined gypsum from flue gas desulfurization(FGD) and phosphogypsum(PG) respectively and the retarding results were compared. The results show that the retarding degree of protein retarders with different amide groups is influenced by the type of calcined gypsum and increased with the increasing pH value of calcined gypsum. When the secondary amide is the main amide group of protein, the retarding degree is reducer as the amount of H2PO-4 increaser. When the primary amide is the main amide group of protein, the retarding degree is not influenced by H2PO-4. So retarder with the secondary amide as the main amide group of protein is suitable for calcined gypsum from FGD, and retarder with the primary amide as the main amide group of protein is suitable for calcined gypsum from PG.
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