A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Novel cement grinding aid and preparation method thereof
The invention provides a novel cement grinding aid and a preparation method thereof, and relates to the technical field of cement processing, 30-45 parts of tetraethoxysilane, 30-40 parts of a silane coupling agent, 10-20 parts of ethylene glycol, 20-25 parts of deionized water and 5-8 parts of a catalyst are mixed, 8-10 parts of graphene oxide, 20-25 parts of sodium thiosulfate and 15-20 parts of organic acid are mixed to form the grinding aid, and the novel cement grinding aid is prepared from the following components in parts by weight: 30-45 parts of tetraethoxysilane, 30-40 parts of a silane coupling agent, 10-20 parts of ethylene glycol, 20-25 parts of deionized water and 5-8 parts of a catalyst. A large number of hydroxyl groups on the surface of silanol have a good adsorption effect with cement, organic acid serves as a chromium-reducing main agent, sodium thiosulfate serves as a chromium-reducing auxiliary agent, the high-temperature sensitivity of sodium thiosulfate used independently is effectively improved through addition of the organic acid, the best chromium-reducing effect is achieved under the cooperation of the organic acid and the sodium thiosulfate, hexavalent chromium is reduced into non-toxic and harmless trivalent chromium, and the chromium-reducing agent has a good chromium-reducing effect. The grinding aid has the excellent grinding aid effect of a conventional grinding aid, the high temperature resistance and the oxidation resistance of the grinding aid are improved through the organic acid, the grinding aid can be stored for a long time, and the situation that the chromium reduction effect is affected due to oxygen oxidation in the storage process is avoided.
本发明提供一种新型水泥助磨剂及其制备方法，涉及水泥加工技术领域，正硅酸乙酯30‑45份，硅烷偶联剂30‑40份，乙二醇10‑20份，去离子水20‑25份，催化剂5‑8份混合，氧化石墨烯8‑10份，硫代硫酸钠20‑25份和有机酸15‑20份组成助磨剂，硅醇表面大量的羟基与水泥有很好的吸附作用，以有机酸作为降铬主剂，硫代硫酸钠作为降铬助剂，有机酸的加入有效改善了硫代硫酸钠单独使用的高温敏感性，二者协同下达到最佳降铬效果，将六价铬还原成为无毒无害的三价铬，不仅具有常规助磨剂的优良助磨效果，且有机酸提高了助磨剂的耐高温性能和抗氧化性能，能够长时间保存，避免了因存放过程中被氧气氧化而影响降铬效果。
Novel cement grinding aid and preparation method thereof
The invention provides a novel cement grinding aid and a preparation method thereof, and relates to the technical field of cement processing, 30-45 parts of tetraethoxysilane, 30-40 parts of a silane coupling agent, 10-20 parts of ethylene glycol, 20-25 parts of deionized water and 5-8 parts of a catalyst are mixed, 8-10 parts of graphene oxide, 20-25 parts of sodium thiosulfate and 15-20 parts of organic acid are mixed to form the grinding aid, and the novel cement grinding aid is prepared from the following components in parts by weight: 30-45 parts of tetraethoxysilane, 30-40 parts of a silane coupling agent, 10-20 parts of ethylene glycol, 20-25 parts of deionized water and 5-8 parts of a catalyst. A large number of hydroxyl groups on the surface of silanol have a good adsorption effect with cement, organic acid serves as a chromium-reducing main agent, sodium thiosulfate serves as a chromium-reducing auxiliary agent, the high-temperature sensitivity of sodium thiosulfate used independently is effectively improved through addition of the organic acid, the best chromium-reducing effect is achieved under the cooperation of the organic acid and the sodium thiosulfate, hexavalent chromium is reduced into non-toxic and harmless trivalent chromium, and the chromium-reducing agent has a good chromium-reducing effect. The grinding aid has the excellent grinding aid effect of a conventional grinding aid, the high temperature resistance and the oxidation resistance of the grinding aid are improved through the organic acid, the grinding aid can be stored for a long time, and the situation that the chromium reduction effect is affected due to oxygen oxidation in the storage process is avoided.
本发明提供一种新型水泥助磨剂及其制备方法，涉及水泥加工技术领域，正硅酸乙酯30‑45份，硅烷偶联剂30‑40份，乙二醇10‑20份，去离子水20‑25份，催化剂5‑8份混合，氧化石墨烯8‑10份，硫代硫酸钠20‑25份和有机酸15‑20份组成助磨剂，硅醇表面大量的羟基与水泥有很好的吸附作用，以有机酸作为降铬主剂，硫代硫酸钠作为降铬助剂，有机酸的加入有效改善了硫代硫酸钠单独使用的高温敏感性，二者协同下达到最佳降铬效果，将六价铬还原成为无毒无害的三价铬，不仅具有常规助磨剂的优良助磨效果，且有机酸提高了助磨剂的耐高温性能和抗氧化性能，能够长时间保存，避免了因存放过程中被氧气氧化而影响降铬效果。
Novel cement grinding aid and preparation method thereof
一种新型水泥助磨剂及其制备方法
LIN XIHUA (author) / ZHOU PEIJIAN (author) / HE KAI (author) / CAO HAI (author) / BAN LUJIANG (author) / GU QINGSHAN (author) / SONG LANLAN (author) / LI XINHUI (author)
2024-01-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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