Cement grinding aid and preparation method thereof

A technology of cement grinding aid and defoaming agent, applied in the field of cement grinding aid and its preparation, can solve the problems of unstable performance of grinding aid, decrease of cement contribution rate, high price and cost, and achieve good grinding aid effect and prevent The effect of agglomeration and improving grinding efficiency
CN109748535AActive Publication Date: 2019-05-14RIZHAO FEM NEW MATERIAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
RIZHAO FEM NEW MATERIAL TECH
Publication Date
2019-05-14

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Abstract

The invention discloses a cement grinding aid and a preparation method thereof, and belongs to the technical field of building materials. The grinding aid is prepared from a modified alcohol amine type grinding aid component, isooctanol phosphate, a thickening dispersant, a surfactant, a defoaming agent and water. According to the invention, maleic anhydride and diethanolamine are polymerized, andthen are fully modified by isopentenyl alcohol polyoxyethylene ether and acrylic acid under the condition of an aqueous solution to obtain the modified alcohol amine type grinding aid component. Themolecules of the alcohol amine type grinding aid component modified under assistance of the isooctanol phosphate in a grinding aid formula are spread to the surfaces of more high-energy particles, theisooctanol phosphate and the modified alcohol amine type grinding aid component act cooperatively, crack closure of materials is stopped, the crack propagation is accelerated, a synergistic effect isachieved, and a grinding aid effect is achieved jointly. The grinding aid formula is simple, raw materials are easily obtained, and the cement grinding aid is small in mixing amount and remarkable ineffect, and is suitable for being popularized and used.
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Description

technical field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a cement grinding aid and a preparation method thereof. Background technique

[0002] Cement grinding aids are added during the grinding of cement clinker. Adding an appropriate amount of grinding aid can achieve physical and chemical modification of the particle surface through the charge dispersion and surface activity of the grinding aid, and exert the interface effect, which can reduce energy consumption under the same cement fineness; or reduce energy consumption when the energy consumption is the same In the case of increasing the specific surface area of ​​cement, optimizing the gradation of cement particles, thereby improving the strength and quality of cement. Therefore, cement grinding aids have the advantages of saving energy, reducing consumption, reducing costs, and protecting resources, making them widely used.

[0003] At present, most ceme...

Claims

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