Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Semi-interpenetrating network structure saline-alkaline tolerant slow-release water-absorbent resin and application
The invention relates to a semi-interpenetrating network structure saline-alkaline tolerant slow-release water-absorbent resin and application thereof. Polyvinyl alcohol is chemically copolymerized with an acrylic acid compound and an acrylamide compound, so that the polyvinyl alcohol is interspersed in the network structure of the polyacrylic acid compound-acrylamide compound to form the semi-interpenetrating network structure. The water-absorbent resin spherical particles are doped into concrete in a dry doping or pre-water-absorbing manner, the particle diameter is not more than 300 microns, the absorption and release process of water in the concrete can be purposefully controlled, early-stage hydration heat can be reduced, concrete self-constriction can be reduced, and early-stage cracking can be reduced; high humidity in the concrete is maintained, plastic shrinkage is reduced, and hydration and strength development are enhanced; and the microstructure of the concrete interface area is enhanced.
本发明涉及一种半互穿网络结构的耐盐碱缓释吸水树脂及应用，将聚乙烯醇与丙烯酸类化合物、丙烯酰胺类化合物进行化学共聚，使聚乙烯醇穿插在聚丙烯酸类化合物‑丙烯酰胺类化合物的网络结构中，形成半互穿的网络结构。本发明的吸水树脂球形颗粒以干掺或者预吸水方式掺入混凝土中，颗粒直径大小不超过300微米，可以有目的地控制混凝土中水的吸收和释放过程，能降低前期水化热降低混凝土自收缩、减少早期开裂；保持混凝土内部高湿度、降低塑性收缩、增强水化和强度发展；增强混凝土界面区微结构等。
Semi-interpenetrating network structure saline-alkaline tolerant slow-release water-absorbent resin and application
The invention relates to a semi-interpenetrating network structure saline-alkaline tolerant slow-release water-absorbent resin and application thereof. Polyvinyl alcohol is chemically copolymerized with an acrylic acid compound and an acrylamide compound, so that the polyvinyl alcohol is interspersed in the network structure of the polyacrylic acid compound-acrylamide compound to form the semi-interpenetrating network structure. The water-absorbent resin spherical particles are doped into concrete in a dry doping or pre-water-absorbing manner, the particle diameter is not more than 300 microns, the absorption and release process of water in the concrete can be purposefully controlled, early-stage hydration heat can be reduced, concrete self-constriction can be reduced, and early-stage cracking can be reduced; high humidity in the concrete is maintained, plastic shrinkage is reduced, and hydration and strength development are enhanced; and the microstructure of the concrete interface area is enhanced.
本发明涉及一种半互穿网络结构的耐盐碱缓释吸水树脂及应用，将聚乙烯醇与丙烯酸类化合物、丙烯酰胺类化合物进行化学共聚，使聚乙烯醇穿插在聚丙烯酸类化合物‑丙烯酰胺类化合物的网络结构中，形成半互穿的网络结构。本发明的吸水树脂球形颗粒以干掺或者预吸水方式掺入混凝土中，颗粒直径大小不超过300微米，可以有目的地控制混凝土中水的吸收和释放过程，能降低前期水化热降低混凝土自收缩、减少早期开裂；保持混凝土内部高湿度、降低塑性收缩、增强水化和强度发展；增强混凝土界面区微结构等。
Semi-interpenetrating network structure saline-alkaline tolerant slow-release water-absorbent resin and application
一种半互穿网络结构的耐盐碱缓释吸水树脂及应用
JIN ZUQUAN (Autor:in) / ZHANG XIAOYING (Autor:in) / YU YONG (Autor:in) / XIONG CHUANSHENG (Autor:in)
15.06.2021
Patent
Elektronische Ressource
Chinesisch
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