Article(id=1322609027192836228, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322608967147172356, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20190432, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1555516800000, receivedDateStr=2019-04-18, revisedDate=1569513600000, revisedDateStr=2019-09-27, acceptedDate=null, acceptedDateStr=null, onlineDate=1793264164970, onlineDateStr=2026-10-29, pubDate=1582128000000, pubDateStr=2020-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793264164970, onlineIssueDateStr=2026-10-29, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793264164970, creator=13701087609, updateTime=1793264164970, updator=13701087609, issue=Issue{id=1322608967147172356, tenantId=1146029695717560320, journalId=1263187385517883426, year='2020', volume='48', issue='2', pageStart='147', pageEnd='324', issueExtLink='null', onlineDate='null', pubDate='1582128000000', pubDateStr='2020-02-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793264150653, creator='13701087609', updateTime=1793276939599, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322662607933255748, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322608967147172356, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322662607933255749, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322608967147172356, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=246, endPage=252, ext={EN=ArticleExt(id=1322609027343831173, articleId=1322609027192836228, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Influence of Hydrolysis Rate of Carboxylates on Dispersion Performance of Slow-release PolycarboxylateSuperplasticizer, columnId=null, journalTitle=Journal of the Chinese Ceramic Society, columnName=null, runingTitle=null, highlight=null, articleAbstract=

To study the influence of unsaturated carboxylate on the dispersing and flow releasing ability of slow-release polycarboxylate superplasticizer(PCE), the hydrolysis behaviors of carboxylates in sodium hydroxide solution at pH value of 12.0 was investigated, and the constants of hydrolysis rate were derived via a linear fitting. Mini slump was used to examine the variation of flow of cement pastes containing the synthesized slow releasing PCE over time, and the results were compared and analyzed to coordinate the relationship of hydrolysis behaviors of carboxylates and slow-release effectiveness of PCE. The results indicate that PCE with the substitution of acrylic acid with 33.3% methyl acrylate and 25.0% dimethyl itaconite showed significant slow-release effect, the initial fluidity of cement paste was 149 mm and 104 mm afterwards increased to 223 mm and 212 mm after 2 h respectively. PCE with carboxylate monomer of faster hydrolysis rate exhibited quicker flow releasing property, and PCE with carboxylate monomer containing more ester grouped manifested stronger flow releasing ability, but need longer time. The flow releasing property of PCE not only depended on the hydrolysis rate and ester group amount of monomer, but also related to its reactivity of monomer to match the copolymerization system.

, authors=Huiqun LI1, Yan YAO1, 2, Ziming WANG1, 3, Suping CUI1, 3, authorsList=Huiqun LI, Yan YAO, Ziming WANG, Suping CUI, authorCompany=null, correspAuthors=Ziming WANG, authorNote=

LI Huiqun (1986-), female, Ph.D. E-mail:

, correspAuthorsNote=
WANG Ziming (1963-), male, Ph.D., Professor. E-mail:
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为研究羧酸酯单体对缓释型聚羧酸超塑化剂(PCE)缓释及其分散性能的影响,首先系统测定了不同结构的羧酸酯单体在pH=12.0的氢氧化钠溶液中水解率随反应时间的变化趋势,通过线性拟合得到羧酸酯的水解反应速率常数。以不同结构的不饱和羧酸酯作为功能单体制备缓释型聚羧酸超塑化剂,测定掺加缓释型聚羧酸超塑化剂水泥净浆流动度随时间的变化趋势。分析了羧酸酯的水解速率对超塑化剂的分散及缓释效果的影响。结果表明:丙烯酸甲酯和亚甲基丁二酸二甲酯各代替33.3%和25.0%的丙烯酸使PCE分散性能增强明显,水泥净浆流动度在2 h内分别从149 mm和104 mm增加到223 mm和212 mm;羧酸酯水解速率越快,所制备的PCE的缓释速率越快,达到最高分散性能所需的时间越短;所制备的PCE所含酯基越多,得到的PCE缓释能力越强,分散性能随时间增加越明显。聚羧酸超塑化剂的缓释效果不仅与所含羧酸酯的水解反应速率和可释放的羧基数量有关,还取决于其羧酸酯单体聚合活性与聚合反应体系的匹配程度。

, authors=李慧群1, 姚燕1, 2, 王子明1, 3, 崔素萍1, 3, authorsList=李慧群, 姚燕, 王子明, 崔素萍, authorCompany=null, correspAuthors=王子明, authorNote=

李慧群(1986—),女,博士。

, correspAuthorsNote=
王子明(1963—),男,博士,教授。
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羧酸酯水解速率对缓释型聚羧酸超塑化剂分散性能的影响
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李慧群 1 , 姚燕 1, 2 , 王子明 1, 3 , 崔素萍 1, 3
硅酸盐学报 | 2020,48(2): 246-252
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硅酸盐学报 | 2020 , 48 (2) : 246 -252
羧酸酯水解速率对缓释型聚羧酸超塑化剂分散性能的影响
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李慧群1 , 姚燕1, 2, 王子明1, 3 , 崔素萍1, 3
作者信息
  • 1.北京工业大学材料科学与工程学院,北京 100124
  • 2.中国建筑材料科学研究总院,北京 100024
  • 3.工业大数据应用技术国家工程实验室,北京 100124
通讯作者:
王子明(1963—),男,博士,教授。
作者简介:

李慧群(1986—),女,博士。

Influence of Hydrolysis Rate of Carboxylates on Dispersion Performance of Slow-release PolycarboxylateSuperplasticizer
Huiqun LI1 , Yan YAO1, 2, Ziming WANG1, 3 , Suping CUI1, 3
Affiliations
  • 1.College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
  • 2.China Building Materials Academy, Beijing 100024, China
  • 3.National Engineering Labaratory for Industrial Big-data Application Technology, Beijing 100124, China
  • Corresponding Author:
    WANG Ziming (1963-), male, Ph.D., Professor. E-mail:

    LI Huiqun (1986-), female, Ph.D. E-mail:

出版时间: 2020-02-20 doi: 10.14062/j.issn.0454-5648.20190432
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为研究羧酸酯单体对缓释型聚羧酸超塑化剂(PCE)缓释及其分散性能的影响,首先系统测定了不同结构的羧酸酯单体在pH=12.0的氢氧化钠溶液中水解率随反应时间的变化趋势,通过线性拟合得到羧酸酯的水解反应速率常数。以不同结构的不饱和羧酸酯作为功能单体制备缓释型聚羧酸超塑化剂,测定掺加缓释型聚羧酸超塑化剂水泥净浆流动度随时间的变化趋势。分析了羧酸酯的水解速率对超塑化剂的分散及缓释效果的影响。结果表明:丙烯酸甲酯和亚甲基丁二酸二甲酯各代替33.3%和25.0%的丙烯酸使PCE分散性能增强明显,水泥净浆流动度在2 h内分别从149 mm和104 mm增加到223 mm和212 mm;羧酸酯水解速率越快,所制备的PCE的缓释速率越快,达到最高分散性能所需的时间越短;所制备的PCE所含酯基越多,得到的PCE缓释能力越强,分散性能随时间增加越明显。聚羧酸超塑化剂的缓释效果不仅与所含羧酸酯的水解反应速率和可释放的羧基数量有关,还取决于其羧酸酯单体聚合活性与聚合反应体系的匹配程度。

聚羧酸超塑化剂  /  缓释  /  不饱和羧酸酯  /  水解速率  /  净浆流动度

To study the influence of unsaturated carboxylate on the dispersing and flow releasing ability of slow-release polycarboxylate superplasticizer(PCE), the hydrolysis behaviors of carboxylates in sodium hydroxide solution at pH value of 12.0 was investigated, and the constants of hydrolysis rate were derived via a linear fitting. Mini slump was used to examine the variation of flow of cement pastes containing the synthesized slow releasing PCE over time, and the results were compared and analyzed to coordinate the relationship of hydrolysis behaviors of carboxylates and slow-release effectiveness of PCE. The results indicate that PCE with the substitution of acrylic acid with 33.3% methyl acrylate and 25.0% dimethyl itaconite showed significant slow-release effect, the initial fluidity of cement paste was 149 mm and 104 mm afterwards increased to 223 mm and 212 mm after 2 h respectively. PCE with carboxylate monomer of faster hydrolysis rate exhibited quicker flow releasing property, and PCE with carboxylate monomer containing more ester grouped manifested stronger flow releasing ability, but need longer time. The flow releasing property of PCE not only depended on the hydrolysis rate and ester group amount of monomer, but also related to its reactivity of monomer to match the copolymerization system.

polycarboxylate superplasticizer  /  slow-release  /  unsaturated carboxylate  /  hydrolysis rate  /  cement fluidity
李慧群, 姚燕, 王子明, 崔素萍. 羧酸酯水解速率对缓释型聚羧酸超塑化剂分散性能的影响. 硅酸盐学报, 2020 , 48 (2) : 246 -252 . DOI: 10.14062/j.issn.0454-5648.20190432
Huiqun LI, Yan YAO, Ziming WANG, Suping CUI. Influence of Hydrolysis Rate of Carboxylates on Dispersion Performance of Slow-release PolycarboxylateSuperplasticizer[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (2) : 246 -252 . DOI: 10.14062/j.issn.0454-5648.20190432
  • 工业大数据应用技术国家工程实验室建设项目(312000522303)
  • 国家自然科学基金项目(51578025)
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2020年第48卷第2期
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doi: 10.14062/j.issn.0454-5648.20190432
  • 接收时间:2019-04-18
  • 首发时间:2026-10-29
  • 出版时间:2020-02-20
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  • 收稿日期:2019-04-18
  • 修回日期:2019-09-27
基金
工业大数据应用技术国家工程实验室建设项目(312000522303)
国家自然科学基金项目(51578025)
作者信息
    1.北京工业大学材料科学与工程学院,北京 100124
    2.中国建筑材料科学研究总院,北京 100024
    3.工业大数据应用技术国家工程实验室,北京 100124

通讯作者:

王子明(1963—),男,博士,教授。
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https://castjournals.cast.org.cn/joweb/gsyxb/CN/10.14062/j.issn.0454-5648.20190432
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2种不同金属材料的力学参数
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species
占总种数比例
Percentage of
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属
Genus
种数
Number of
species
占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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