Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of efficient cement grinding aid
The invention relates to the field of building materials, in particular to a preparation method of an efficient cement grinding aid. Alkali lignin is used as a main raw material, and the grinding-aiding and enhancing performance of the alkali lignin on cement clinker and mixed materials is improved through chemical modification; by adopting an ammonium persulfate oxidation modification method, the relative molecular mass of the alkali lignin is reduced, polar groups in molecules of the alkali lignin are increased, and the efficient cement grinding aid is prepared; the grinding aid mechanism of the prepared efficient cement grinding aid is as follows: the efficient cement grinding aid has adsorption and charge shielding effects on the surfaces of new cement particles; comprehensive performance determination shows that the grinding aid efficiency of the high-efficiency cement grinding aid prepared by the invention is obviously superior to that of triethanolamine, and the later-stage flexural and compressive strength of the high-efficiency cement grinding aid to cement exceeds that of triethanolamine.
本发明涉及建筑材料领域，具体关于一种高效水泥助磨剂的制备方法；本发明以碱木质素为主要原料，通过化学改性提高其对水泥熟料和混合材料的助磨增强性能；采用过硫酸铵氧化改性的方法降低碱木质素的相对分子质量，增加其分子中的极性基团，制备高效水泥助磨剂；本发明制备的高效水泥助磨剂的助磨机理：在水泥新生颗粒表面吸附和电荷屏蔽作用；综合性能测定表明，本发明制备的高效水泥助磨剂，助磨效能明显优于三乙醇胺，其对水泥的后期抗折抗压强度超过三乙醇胺。
Preparation method of efficient cement grinding aid
The invention relates to the field of building materials, in particular to a preparation method of an efficient cement grinding aid. Alkali lignin is used as a main raw material, and the grinding-aiding and enhancing performance of the alkali lignin on cement clinker and mixed materials is improved through chemical modification; by adopting an ammonium persulfate oxidation modification method, the relative molecular mass of the alkali lignin is reduced, polar groups in molecules of the alkali lignin are increased, and the efficient cement grinding aid is prepared; the grinding aid mechanism of the prepared efficient cement grinding aid is as follows: the efficient cement grinding aid has adsorption and charge shielding effects on the surfaces of new cement particles; comprehensive performance determination shows that the grinding aid efficiency of the high-efficiency cement grinding aid prepared by the invention is obviously superior to that of triethanolamine, and the later-stage flexural and compressive strength of the high-efficiency cement grinding aid to cement exceeds that of triethanolamine.
本发明涉及建筑材料领域，具体关于一种高效水泥助磨剂的制备方法；本发明以碱木质素为主要原料，通过化学改性提高其对水泥熟料和混合材料的助磨增强性能；采用过硫酸铵氧化改性的方法降低碱木质素的相对分子质量，增加其分子中的极性基团，制备高效水泥助磨剂；本发明制备的高效水泥助磨剂的助磨机理：在水泥新生颗粒表面吸附和电荷屏蔽作用；综合性能测定表明，本发明制备的高效水泥助磨剂，助磨效能明显优于三乙醇胺，其对水泥的后期抗折抗压强度超过三乙醇胺。
Preparation method of efficient cement grinding aid
一种高效水泥助磨剂的制备方法
GUO QIZHENG (Autor:in)
30.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C08H
DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
,
Derivate von natürlichen makromolekularen Verbindungen
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