Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Core-shell structure polymer cement modifier, preparation method and cement-based material
The invention discloses a core-shell structure polymer cement modifier, a preparation method and a cement-based material. The core-shell structure polymer cement modifier comprises a first component and a second component, wherein the first component comprises styrene, first deionized water, an emulsifier, a first buffer agent and a first initiator, and the second component comprises a seed emulsion, second deionized water, a second initiator and a butyl acrylate second buffer agent. The cement modifier has the beneficial effects that the cement modifier is in an emulsion state, the emulsion particles are controllable in size, narrow in particle size distribution, easy to operate, good in repeatability and low in film forming temperature, the holes of the cement are filled with the emulsion particles, the emulsion particles can be condensed to form a film within a wide use temperature range, the holes and cracks are sealed, the impermeability of the cement is improved, and the durability of the cement is improved, compared with common cement, the cement-based material added with the cement modifier has the advantage that the flowability, the water-retaining property, the cohesiveness, the wear resistance, the freeze-thaw resistance, the radiation resistance, the mechanical strength and the extensibility are obviously improved.
本发明公开了一种核壳结构聚合物水泥改性剂、制备方法及水泥基材料，包括第一组分和第二组分；第一组分包括：苯乙烯，第一去离子水，乳化剂份，第一缓冲剂，第一引发剂；第二组分包括：种子乳液，第二去离子水，第二引发剂，丙烯酸丁酯第二缓冲剂。有益效果是水泥改性剂为乳液状态，乳液粒子的大小可控，粒径分布窄且易操作，重复性好，乳液粒子成膜温度较低，乳液粒子填充到水泥的孔洞中，可以在较宽的使用温度范围下凝聚成膜，对孔洞和裂缝起到封闭的作用，提高水泥的抗渗能力，提高水泥的耐久性；加入该水泥改性剂的水泥基材料流动性、保水性、粘结性、耐磨性、抗冻融性、防辐射性能以及力学强度和延伸性能较普通水泥都有显著提高。
Core-shell structure polymer cement modifier, preparation method and cement-based material
The invention discloses a core-shell structure polymer cement modifier, a preparation method and a cement-based material. The core-shell structure polymer cement modifier comprises a first component and a second component, wherein the first component comprises styrene, first deionized water, an emulsifier, a first buffer agent and a first initiator, and the second component comprises a seed emulsion, second deionized water, a second initiator and a butyl acrylate second buffer agent. The cement modifier has the beneficial effects that the cement modifier is in an emulsion state, the emulsion particles are controllable in size, narrow in particle size distribution, easy to operate, good in repeatability and low in film forming temperature, the holes of the cement are filled with the emulsion particles, the emulsion particles can be condensed to form a film within a wide use temperature range, the holes and cracks are sealed, the impermeability of the cement is improved, and the durability of the cement is improved, compared with common cement, the cement-based material added with the cement modifier has the advantage that the flowability, the water-retaining property, the cohesiveness, the wear resistance, the freeze-thaw resistance, the radiation resistance, the mechanical strength and the extensibility are obviously improved.
本发明公开了一种核壳结构聚合物水泥改性剂、制备方法及水泥基材料，包括第一组分和第二组分；第一组分包括：苯乙烯，第一去离子水，乳化剂份，第一缓冲剂，第一引发剂；第二组分包括：种子乳液，第二去离子水，第二引发剂，丙烯酸丁酯第二缓冲剂。有益效果是水泥改性剂为乳液状态，乳液粒子的大小可控，粒径分布窄且易操作，重复性好，乳液粒子成膜温度较低，乳液粒子填充到水泥的孔洞中，可以在较宽的使用温度范围下凝聚成膜，对孔洞和裂缝起到封闭的作用，提高水泥的抗渗能力，提高水泥的耐久性；加入该水泥改性剂的水泥基材料流动性、保水性、粘结性、耐磨性、抗冻融性、防辐射性能以及力学强度和延伸性能较普通水泥都有显著提高。
Core-shell structure polymer cement modifier, preparation method and cement-based material
一种核壳结构聚合物水泥改性剂、制备方法及水泥基材料
CHEN JIANJUN (Autor:in) / CHEN JIANCHUN (Autor:in) / YE JIAYUAN (Autor:in) / LUAN ZHENGBIN (Autor:in) / WANG HONGXIA (Autor:in) / DONG GANG (Autor:in)
16.10.2020
Patent
Elektronische Ressource
Chinesisch