Styrene-acrylate latex with high glass transition temperature (T), low minimum film forming temperature(MFT) and good stability was prepared via core-shell emulsion polymerization. With semicontinuous process, hig...Styrene-acrylate latex with high glass transition temperature (T), low minimum film forming temperature(MFT) and good stability was prepared via core-shell emulsion polymerization. With semicontinuous process, high conversion rate of monomer and low gel rate were achieved. The weight ratio of core monomer to shell monomer was approximately 1.35. It is found that many factors such as emulsifiers, initiators, reaction temperature, pH value and polymerization technology have influences on the permormance of styrene-acrylate latex. The prepared latex was characterized by TEM and FTIR. The obtained latex with T of 20.57 ℃, MFT or5.0 ℃, and good stability, had good stability of film forming.展开更多
为探索近年来我国被动式超低能耗建筑研究的热点和趋势,采用CiteSpace与VOSviewer基于中国知网和Web of Science作为中英文文献来源,搜索并提炼154篇中文核心及118篇英文核心有效文献进行科学知识图谱分析。研究结果表明,该领域的发展...为探索近年来我国被动式超低能耗建筑研究的热点和趋势,采用CiteSpace与VOSviewer基于中国知网和Web of Science作为中英文文献来源,搜索并提炼154篇中文核心及118篇英文核心有效文献进行科学知识图谱分析。研究结果表明,该领域的发展进程大致可划分为三阶段:发展阶段、增长阶段、延伸阶段,国内研究机构初步形成了较小团体的研究网络,但未形成大规模的研究团体。随着被动式超低能耗建筑的不断发展,多目标优化研究成为热点,其研究趋势也将更加注重针对当地气候和资源特点的定制化设计和优化,同时将更加注重实践应用和技术推广,以实现更加可持续、健康和舒适的居住环境。展开更多
文摘Styrene-acrylate latex with high glass transition temperature (T), low minimum film forming temperature(MFT) and good stability was prepared via core-shell emulsion polymerization. With semicontinuous process, high conversion rate of monomer and low gel rate were achieved. The weight ratio of core monomer to shell monomer was approximately 1.35. It is found that many factors such as emulsifiers, initiators, reaction temperature, pH value and polymerization technology have influences on the permormance of styrene-acrylate latex. The prepared latex was characterized by TEM and FTIR. The obtained latex with T of 20.57 ℃, MFT or5.0 ℃, and good stability, had good stability of film forming.
文摘为探索近年来我国被动式超低能耗建筑研究的热点和趋势,采用CiteSpace与VOSviewer基于中国知网和Web of Science作为中英文文献来源,搜索并提炼154篇中文核心及118篇英文核心有效文献进行科学知识图谱分析。研究结果表明,该领域的发展进程大致可划分为三阶段:发展阶段、增长阶段、延伸阶段,国内研究机构初步形成了较小团体的研究网络,但未形成大规模的研究团体。随着被动式超低能耗建筑的不断发展,多目标优化研究成为热点,其研究趋势也将更加注重针对当地气候和资源特点的定制化设计和优化,同时将更加注重实践应用和技术推广,以实现更加可持续、健康和舒适的居住环境。