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Calcium silicate hydrate crystal nucleus dispersing agent and preparation method thereof
The invention provides a hydrated calcium silicate crystal nucleus dispersing agent and a preparation method thereof. The hydrated calcium silicate crystal nucleus dispersing agent is prepared from the following components in parts by weight: 32 to 80 parts of p-hydroxystyrene polyoxyethylene ether, 8 to 12 parts of maleic anhydride, 6 to 9 parts of sodium p-styrenesulfonate, 0.1 to 0.4 part of chain transfer agent, 0.6 to 1.2 parts of oxidizing agent, 0.17 to 0.35 part of reducing agent and 75 to 140 parts of water. The dispersant has a stable space structure, integrates a strong electron repulsive force structure and steric hindrance, can stabilize suspended crystals without entanglement, enables C-S-H crystal nucleus particles to be controlled below 50 microns, effectively solves the problem that the early strength effect is reduced due to overlarge existing calcium silicate hydrate crystal nucleuses, and has a good early strength effect. Compared with a traditional C-S-H early strength agent prepared by using polycarboxylic acid as a crystal nucleus dispersing agent, the strength of the concrete within one day is increased more quickly, and the strength of a test block within 7 days and 28 days does not decrease.
本发明提供了一种水化硅酸钙晶核分散剂及其制备方法，包括以下重量份的组分：对羟基苯乙烯聚氧乙烯醚32‑80份、马来酸酐8‑12份、对苯乙烯磺酸钠6‑9份、链转移剂0.1‑0.4份、氧化剂0.6‑1.2份、还原剂0.17‑0.35份和水75‑140份。该分散剂空间结构稳定，具备强电子斥力结构与空间位阻一体，能够稳定悬浮晶体的同时，自身不纠缠，使得C‑S‑H晶核颗粒控制在50μm以下，有效解决现有的水化硅酸钙晶核过大，导致早强效果下降的问题，对比传统聚羧酸作为晶核分散剂制备的C‑S‑H早强剂来说，混凝土1天强度增加更快，7天和28天试块强度无下降趋势。
Calcium silicate hydrate crystal nucleus dispersing agent and preparation method thereof
The invention provides a hydrated calcium silicate crystal nucleus dispersing agent and a preparation method thereof. The hydrated calcium silicate crystal nucleus dispersing agent is prepared from the following components in parts by weight: 32 to 80 parts of p-hydroxystyrene polyoxyethylene ether, 8 to 12 parts of maleic anhydride, 6 to 9 parts of sodium p-styrenesulfonate, 0.1 to 0.4 part of chain transfer agent, 0.6 to 1.2 parts of oxidizing agent, 0.17 to 0.35 part of reducing agent and 75 to 140 parts of water. The dispersant has a stable space structure, integrates a strong electron repulsive force structure and steric hindrance, can stabilize suspended crystals without entanglement, enables C-S-H crystal nucleus particles to be controlled below 50 microns, effectively solves the problem that the early strength effect is reduced due to overlarge existing calcium silicate hydrate crystal nucleuses, and has a good early strength effect. Compared with a traditional C-S-H early strength agent prepared by using polycarboxylic acid as a crystal nucleus dispersing agent, the strength of the concrete within one day is increased more quickly, and the strength of a test block within 7 days and 28 days does not decrease.
本发明提供了一种水化硅酸钙晶核分散剂及其制备方法，包括以下重量份的组分：对羟基苯乙烯聚氧乙烯醚32‑80份、马来酸酐8‑12份、对苯乙烯磺酸钠6‑9份、链转移剂0.1‑0.4份、氧化剂0.6‑1.2份、还原剂0.17‑0.35份和水75‑140份。该分散剂空间结构稳定，具备强电子斥力结构与空间位阻一体，能够稳定悬浮晶体的同时，自身不纠缠，使得C‑S‑H晶核颗粒控制在50μm以下，有效解决现有的水化硅酸钙晶核过大，导致早强效果下降的问题，对比传统聚羧酸作为晶核分散剂制备的C‑S‑H早强剂来说，混凝土1天强度增加更快，7天和28天试块强度无下降趋势。
Calcium silicate hydrate crystal nucleus dispersing agent and preparation method thereof
一种水化硅酸钙晶核分散剂及其制备方法
LI LANG (author) / ZHAO TAO (author) / YANG ZHIFEI (author)
2023-09-29
Patent
Electronic Resource
Chinese
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