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Grinding aid for improving durability of cement and preparation method of grinding aid

A technology of grinding aid and durability, which is applied in the field of grinding aid and its preparation for improving the durability of cement, can solve problems such as insufficient durability of cement, achieve good grinding aid effect, improve grinding aid effect, compressive strength and Good effect on flexural strength

Active Publication Date: 2021-08-03
邢台建德水泥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the related technologies mentioned above, the inventor believes that although the prepared cement grinding aid can improve the grinding efficiency, reduce power consumption and increase the yield, the cement prepared by adding the relevant grinding aid has insufficient durability

Method used

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  • Grinding aid for improving durability of cement and preparation method of grinding aid
  • Grinding aid for improving durability of cement and preparation method of grinding aid
  • Grinding aid for improving durability of cement and preparation method of grinding aid

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-3

[0034] A kind of carboxyl-terminated sodium hyperbranched polymer of preparation example 1-3, its each raw material and each raw material consumption thereof are as shown in table 1, and its preparation steps are as follows:

[0035] 1) Add 2-aminoterephthalic acid, triethanolamine, diisopropanolamine, n-propyl titanate and xylene into a three-necked flask, which is equipped with a water separator, condenser, thermometer and stirrer , slowly raised the temperature to 135°C, kept the temperature for 18 hours, and rotatively evaporated the xylene to obtain a carboxyl-terminated hyperbranched polymer;

[0036] 2) In 20 kg of water, add 3 kg of carboxy-terminated hyperbranched polymer and 0.1 kg of sodium hydroxide, stir and react for 30 min, evaporate and concentrate to obtain carboxy-terminated sodium hyperbranched polymer.

[0037] Each raw material of table 1 preparation example 1-3 terminal carboxyl hyperbranched polymer and each raw material consumption (kg)

[0038] ...

preparation example 4

[0040] The difference with Preparation Example 1 is that its preparation steps are as follows:

[0041] 1) Add 2-aminoterephthalic acid, triethanolamine, diisopropanolamine, n-propyl titanate and xylene into a three-necked flask, which is equipped with a water separator, condenser, thermometer and stirrer , slowly raise the temperature to 140°C, keep the temperature for 16 hours, and remove the xylene by rotary evaporation to obtain a carboxyl-terminated hyperbranched polymer;

[0042] 2) In 30 kg of water, add 2 kg of carboxy-terminated hyperbranched polymer and 0.15 kg of sodium hydroxide, stir and react for 20 min, evaporate and concentrate to obtain carboxy-terminated sodium hyperbranched polymer.

Embodiment 1-5

[0045] A kind of grinding aid that improves cement durability of embodiment 1-5, its each raw material and each raw material consumption are as shown in table 2, and its preparation steps are as follows:

[0046] Add triethanolamine, triisopropanolamine, diethanol monoisopropanolamine, and diethylene glycol into water, stir evenly, then add the remaining raw materials, stir evenly, and then the grinding aid can be obtained.

[0047] Each raw material of table 2 embodiment 1-5 grinding aid and each raw material consumption (kg)

[0048] Example 1 Example 2 Example 3 Example 4 Example 5 Triethanolamine 18 19 20 21 22 Triisopropanolamine 7.5 7 6.5 6 5.5 Diethanol monoisopropanolamine 0.5 1 1.7 2.5 3 Sodium chloride 4.5 4 3.5 3 2.5 diethylene glycol 0.5 1 1.7 2.5 3 Sodium acetate 6 5 4 3 2 water 63 63 62.6 62 62

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Abstract

The invention relates to the field of cement grinding aids, and particularly discloses a grinding aid for improving the durability of cement, the grinding aid is prepared from the following raw materials in percentage by weight: 18-22% of triethanolamine, 5.5-7.5% of triisopropanolamine, 0.5-3% of diethanolisopropanolamine, 2.5-4.5% of sodium chloride, 0.5-3% of diethylene glycol, 2-6% of sodium acetate and the balance of water. The grinding aid has the advantage that the durability of the cement can be improved; in addition, the invention also provides a preparation method of the grinding aid for improving the durability of the cement.

Description

technical field [0001] The application relates to the field of cement grinding aids, more specifically, it relates to a grinding aid for improving cement durability and a preparation method thereof. Background technique [0002] In recent years, with the gradual development of the construction industry, the demand for its basic raw material cement has gradually increased. However, the cement industry, as a high-pollution and high-energy-consuming industry, has attracted much attention. The cement production process is referred to as two grinding and one firing, namely raw meal powder, kiln calcination and cement grinding. Among them, cement grinding is the process link with the highest energy consumption in the cement production process, accounting for 60-70% of the entire production process. In the cement powder process, most of the energy disappears as heat dissipation. When the cement fineness reaches a certain level, the efficiency of cement powder selection decreases d...

Claims

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Application Information

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IPC IPC(8): C04B24/12C04B24/24C08G83/00C04B103/52
CPCC04B40/0039C04B24/24C08G83/005C08G83/006C04B2103/52C04B24/122C04B22/124C04B24/026C04B24/04Y02P40/10
Inventor 孟增臣郑建国王坚强孟云平梅成杰
Owner 邢台建德水泥有限公司
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