Low-carbon glue reducing agent and preparation method thereof

Abstract

The invention relates to the technical field of concrete auxiliaries, and particularly discloses a low-carbon glue reducing agent and a preparation method thereof.The preparation method comprises the following steps that 1, 1-octylene-3-alcohol and a catalyst are mixed and heated to 45-85 DEG C in the negative pressure state, then glycidyl is dropwise added, the temperature is kept at 45-85 DEG C, a reaction is conducted for 2-5 h, cooling is conducted, and a novel alcohol glycidyl polyether monomer is obtained; 2) heating a novel alcohol glycidyl polyether monomer to 75-90 DEG C, dropwise adding the solution A and the solution B at the same time, keeping the temperature at 75-90 DEG C for 1-1.5 h, then adding a neutralizer, and then adding water to obtain an aluminum phase mineral dispersant; 3) mixing the trihydric alcohol, the dihydric alcohol and the monohydric alcohol, then adding water, and stirring for 0.5-1 hour to obtain mixed alcohol, and 4) mixing the aluminum-phase mineral dispersant and the mixed alcohol, then adding water, and stirring uniformly to obtain the low-carbon glue reducer. The low-carbon glue reducer has the advantage that the cement consumption of the glue reducer is further improved.

Description

Technical Field

[0001] This invention relates to the field of concrete additives, and in particular to a low-carbon binder reducing agent and its preparation method. Background Technology

[0002] Concrete binder is a chemical admixture for concrete. Its main function is to reduce the amount of cement used while maintaining or even increasing the strength of the concrete.

[0003] While existing cementitious agents can reduce the amount of cement used, their effectiveness in maintaining or improving concrete strength is relatively limited. When high-strength concrete is required, the existing cementitious agents have very limited effect on reducing cement usage, which is difficult to meet the needs of low-carbon development. Therefore, there is still room for improvement. Summary of the Invention

[0004] To further improve the effect of reducing cement usage by reducing adhesives, this application provides a low-carbon adhesive reducing agent and its preparation method.

[0005] In a first aspect, this application provides a method for preparing a low-carbon adhesive reducing agent, employing the following technical solution: A method for preparing a low-carbon adhesive reducing agent includes the following steps: Step 1): Mix 40.9-59.14 parts of 1-octen-3-ol and 1-3 parts of catalyst, heat to 45-85℃ under negative pressure, then add 170.86-189.1 parts of glycidyl ether dropwise over a period of 0.5-3 hours, keep the temperature at 45-85℃ for 2-5 hours, and then cool down to obtain a novel alcohol glycidyl ether monomer. Step 2): Heat the novel alcohol glycidyl polyether monomer to 75-90℃, and simultaneously add 100 parts of solution A and 100 parts of solution B. Add solution A for 2-2.5 hours and solution B for 1.5-2 hours. After the addition of solution A is complete, keep the temperature at 75-90℃ for 1-1.5 hours. Then add 5.9-9.4 parts of neutralizing agent, and then add water to obtain 1000 parts of aluminum phase mineral dispersant. Step 3): Mix 441.44-599.71 parts of triol, 141.59-328.31 parts of diol and 30.25-58.70 parts of monool, then add water and stir for 0.5-1 h to obtain 1000 parts of mixed alcohol. Step 4) Mix 75-85 parts of aluminum phase mineral dispersant and 315-325 parts of mixed alcohol, then add water and stir evenly to obtain 1000 parts of low carbon adhesive. In step 2), solution A is composed of 3.0-8.0 parts of initiator, 2.4-9.6 parts of chain transfer agent and water, with a total mass of 100 parts; In step 2), solution B is composed of 37.03-53.51 parts of acidic substances, 22.68-32.78 parts of acrylamide, 3.2-7.9 parts of reducing agent and water, with a total mass of 100 parts. All quantities mentioned are mass portions.

[0006] By adopting the above technical solution, the anchoring effect of the molecular structure in the aluminum phase mineral dispersant is achieved by the anionic electrostatic adsorption provided by the carboxyl group and the covalent adsorption of N atoms containing lone pairs of electrons provided by the amide group. The combined anchoring effect of these two effects can greatly improve the overall and effective adsorption of cement particles by the polymer of the water-reducing agent; moreover, the molecular conformation is relatively small, which can act on the fine structure that the water-reducing agent molecule cannot reach.

[0007] The mixed alcohols are composed of polyols, with triols as the main component, which provides hydrogen bonding and cementation for hydroxyl groups in cement; diols are used as an auxiliary component, which assists the triols in forming hydrogen bonds; and monools are used as a corrective material, which reduces the intermolecular hydrogen bonding film-forming effect between triols and diols. The three alcohols complement and restrain each other to form a moderate and safe hydroxyl density and total amount of hydroxyl groups.

[0008] The low-carbon binder produced has a more significant effect on reducing cement usage compared to existing binders. With the same amount of cement reduction, the resulting concrete has higher strength and can better meet the needs of construction projects.

[0009] Preferably, in step 1), the catalyst is boron trifluoride diethyl ether, tin tetrachloride, or antimony pentachloride.

[0010] By adopting the above technical solution and selecting specific catalysts, the reaction process can be better guaranteed, resulting in a lower-carbon binder of better quality and a more significant effect on improving the strength of concrete.

[0011] Preferably, in solution A, the initiator is ammonium persulfate or diisopropyl peroxide dicarbonate; the chain transfer agent is mercaptoacetic acid, mercaptoethanol, or mercaptopropionic acid.

[0012] By adopting the above technical solution and selecting specific initiators and chain transfer agents, the quality of the aluminum phase mineral dispersant is better, and the effect of improving concrete performance is more significant.

[0013] Preferably, in solution B, the acid is maleic acid or fumaric acid; and the reducing agent is sodium hypophosphite.

[0014] By adopting the above technical solution and selecting specific acidic substances and reducing agents, the reaction process can be better promoted, resulting in a higher quality adhesive.

[0015] Preferably, in step 2), the neutralizing agent is potassium carbonate.

[0016] By adopting the above technical solution and selecting specific neutralizing agents, the quality of the aluminum phase mineral dispersant is better, and the effect of improving concrete performance is better.

[0017] Preferably, in step 3), the triol is glycerol; the diol is propylene glycol or ethylene glycol; and the monool is n-propanol.

[0018] By adopting the above technical solution, the quality of the mixed alcohol is better, and the effect of the binder in improving the strength and slump of concrete is more significant.

[0019] Preferably, in step 1), the negative pressure is -0.1 MPa.

[0020] By adopting the above technical solution, air can be better discharged, the influence of oxygen on the reaction can be reduced, oxidation can be reduced, and the quality of the reaction products can be improved.

[0021] Preferably, in step 1), 40.9-59.14 parts of 1-octen-3-ol and 1-3 parts of catalyst are mixed, nitrogen gas is introduced, and then a vacuum is drawn to a negative pressure state.

[0022] By adopting the above technical solution, air can be better discharged, the reaction process is more stable, and the quality of the reaction products is higher.

[0023] Secondly, this application provides a low-carbon adhesive reducing agent, which adopts the following technical solution: A low-carbon adhesive reducing agent is prepared by the above-described method for preparing low-carbon adhesive reducing agents.

[0024] By adopting the above technical solution, the low-carbon binder can improve the slump of concrete, improve the fluidity of concrete, and significantly improve the strength of concrete, effectively reduce the amount of cement used, and well meet the requirements of low carbon and the strength performance requirements of concrete in building engineering.

[0025] In summary, this application has the following beneficial effects: 1. Because the low-carbon binder prepared by this application through the combination of aluminum phase mineral dispersant and mixed alcohol has a more significant effect on reducing cement usage compared with existing binders, the concrete produced has higher strength when the amount of cement reduced is the same, which can better meet the needs of construction projects.

[0026] 2. In this application, by selecting specific catalysts, initiators, chain transfer agents, acidic substances, reducing agents, and neutralizing agents, the reaction process can be better guaranteed, resulting in a lower carbon binder of better quality and a more significant effect on improving the strength of concrete. Attached Figure Description

[0027] Figure 1 This is the GPC spectrum of aluminum phase mineral dispersants.

[0028] Figure 2 The image shows a SEM test image of a concrete sample made from the concrete mix of Experiment 1.

[0029] Figure 3 The image shows a SEM test image of a concrete sample made from the concrete mix of Experiment Example 2.

[0030] Figure 4 The image shows a SEM test image of a concrete sample made from the concrete mix of Experiment Example 7. Detailed Implementation

[0031] The present application will be further described in detail below with reference to the embodiments.

[0032] Example 1 A method for preparing a low-carbon adhesive reducing agent includes the following steps: Step 1): 51.49 kg of 1-octen-3-ol and 2 kg of tin tetrachloride were added to a high-pressure reactor. Nitrogen gas with a volume of 3 times that of the reactor was introduced. The reactor was then sealed and evacuated to -0.1 MPa. The temperature was raised to 45°C. Then, 178.51 kg of glycidyl ether was continuously and uniformly added dropwise over a period of 3 hours. During the addition, the pressure inside the reactor was controlled to be less than 0.4 MPa. After the addition was completed, the reactor was kept at 45°C for 5 hours. The temperature was then lowered to obtain a novel alcohol glycidyl ether monomer.

[0033] Step 2) Heat the novel alcohol glycidyl polyether monomer to 75°C, and then simultaneously add 100 kg of solution A and 100 kg of solution B. The addition time of solution A is 2.5 h and the addition time of solution B is 2 h. After the addition of solution A is completed, keep it at 75°C for 1 h, then add 7.1 kg of potassium carbonate, and then add water to obtain 1000 kg of aluminum phase mineral dispersant.

[0034] Step 3) Add 599.71 kg of glycerol, 141.59 kg of propylene glycol and 58.70 kg of n-propanol into the reactor, then add water, stir at 100 r / min for 1 h to obtain 1000 kg of mixed alcohol.

[0035] Step 4) Add 80 kg of aluminum phase mineral dispersant and 320 kg of mixed alcohol to a mixing tank, then add water, and stir at 120 r / min for 15 min to obtain 1000 kg of low carbon binder.

[0036] In step 2), solution A is composed of 6 kg of diisopropyl peroxide dicarbonate, 7.2 kg of mercaptoethanol and water, with a total mass of 100 kg.

[0037] In step 2), solution B is composed of 46.66 kg maleic acid, 28.58 kg acrylamide, 5.9 kg sodium hypophosphite and water, with a total mass of 100 kg.

[0038] The source information of the raw materials used in the preparation method of low-carbon adhesive reducing agent is detailed in Table 1.

[0039] Example 2 A method for preparing a low-carbon adhesive reducing agent includes the following steps: Step 1): 59.14 kg of 1-octen-3-ol and 1 kg of boron trifluoride diethyl ether were added to a high-pressure reactor. Nitrogen gas with a volume of 3 times that of the reactor was introduced. The reactor was then sealed and evacuated to -0.1 MPa. The temperature was raised to 85°C. Then, 170.86 kg of glycidyl ether was continuously and uniformly added dropwise over a period of 0.5 h. During the addition, the pressure inside the reactor was controlled to be less than 0.4 MPa. After the addition was completed, the reactor was kept at 85°C for 2 h and then cooled to obtain a novel alcohol glycidyl ether monomer.

[0040] Step 2) Heat the novel alcohol glycidyl polyether monomer to 90°C, and then simultaneously add 100 kg of solution A and 100 kg of solution B. The addition time of solution A is 2 h and the addition time of solution B is 1.5 h. After the addition of solution A is completed, keep it at 90°C for 1 h, then add 5.9 kg of potassium carbonate, and then add water to obtain 1000 kg of aluminum phase mineral dispersant.

[0041] Step 3): 441.44 kg of glycerol, 328.31 kg of propylene glycol and 30.25 kg of n-propanol were added to the reactor, followed by water. The mixture was stirred at 120 r / min for 0.5 h to obtain 1000 kg of mixed alcohol.

[0042] Step 4) Add 80 kg of aluminum phase mineral dispersant and 320 kg of mixed alcohol to a mixing tank, then add water, and stir at 120 r / min for 15 min to obtain 1000 kg of low carbon binder.

[0043] In step 2), solution A is composed of 3.0 kg of diisopropyl peroxide, 2.4 kg of mercaptopropionic acid and water, with a total mass of 100 kg.

[0044] In step 2), solution B is composed of 53.51 kg fumaric acid, 32.78 kg acrylamide, 3.2 kg sodium hypophosphite and water, with a total mass of 100 kg.

[0045] The source information of the raw materials used in the preparation method of low-carbon adhesive reducing agent is detailed in Table 1.

[0046] Example 3 A method for preparing a low-carbon adhesive reducing agent includes the following steps: Step 1): 40.9 kg of 1-octen-3-ol and 2.5 kg of tin tetrachloride were added to a high-pressure reactor. Nitrogen gas with a volume of 3 times that of the reactor was introduced. The reactor was then sealed and evacuated to -0.1 MPa. The temperature was raised to 55°C. Then, 189.1 kg of glycidyl ether was continuously and uniformly added dropwise over a period of 2.5 h. During the addition, the pressure inside the reactor was controlled to be less than 0.4 MPa. After the addition was completed, the reactor was kept at 55°C for 4.5 h and then cooled to obtain a novel alcohol glycidyl ether monomer.

[0047] Step 2): Heat the novel alcohol glycidyl polyether monomer to 75°C, and then simultaneously add 100 kg of solution A and 100 kg of solution B. The addition time of solution A is 2.5 h and the addition time of solution B is 1.5 h. After the addition of solution A is completed, keep it at 75°C for 1 h, then add 9.4 kg of potassium carbonate, and then add water to obtain 1000 kg of aluminum phase mineral dispersant.

[0048] Step 3): Add 478.45 kg of glycerol, 285.93 kg of ethylene glycol and 35.62 kg of n-propanol into the reactor, then add water, stir at 100 r / min for 1 h to obtain 1000 kg of mixed alcohol.

[0049] Step 4) Add 80 kg of aluminum phase mineral dispersant and 320 kg of mixed alcohol to a mixing tank, then add water, and stir at 120 r / min for 15 min to obtain 1000 kg of low carbon binder.

[0050] In step 2), solution A is composed of 8.0 kg of ammonium persulfate, 9.6 kg of mercaptoacetic acid and water, with a total mass of 100 kg.

[0051] In step 2), solution B is composed of 37.03 kg maleic acid, 22.68 kg acrylamide, 7.9 kg sodium hypophosphite and water, with a total mass of 100 kg.

[0052] The source information of the raw materials used in the preparation method of low-carbon adhesive reducing agent is detailed in Table 1.

[0053] Example 4 A method for preparing a low-carbon adhesive reducing agent includes the following steps: Step 1): 46.19 kg of 1-octen-3-ol and 3 kg of antimony pentachloride were added to a high-pressure reactor. Nitrogen gas with a volume of 3 times that of the reactor was introduced. The reactor was then sealed and evacuated to -0.1 MPa. The temperature was raised to 65°C. Then, 183.81 kg of glycidyl ether was continuously and uniformly added dropwise over a period of 2 hours. During the addition, the pressure inside the reactor was controlled to be less than 0.4 MPa. After the addition was completed, the reactor was kept at 65°C for 4 hours. The temperature was then lowered to obtain a novel alcohol glycidyl ether monomer.

[0054] Step 2) Heat the novel alcohol glycidyl polyether monomer to 80°C, and then simultaneously add 100 kg of solution A and 100 kg of solution B. The addition time of solution A is 2 h and the addition time of solution B is 1.5 h. After the addition of solution A is completed, keep it at 80°C for 1 h, then add 8.2 kg of potassium carbonate, and then add water to obtain 1000 kg of aluminum phase mineral dispersant.

[0055] Step 3) Add 520.58 kg of glycerol, 234.95 kg of ethylene glycol and 44.47 kg of n-propanol into the reactor, then add water, stir at 120 r / min for 0.5 h to obtain 1000 kg of mixed alcohol.

[0056] Step 4) Add 80 kg of aluminum phase mineral dispersant and 320 kg of mixed alcohol to a mixing tank, then add water, and stir at 120 r / min for 15 min to obtain 1000 kg of low carbon binder.

[0057] In step 2), solution A is composed of 7 kg of ammonium persulfate, 8.4 kg of mercaptoethanol and water, with a total mass of 100 kg.

[0058] In step 2), solution B is composed of 41.85 kg maleic acid, 25.63 kg acrylamide, 6.9 kg sodium hypophosphite and water, with a total mass of 100 kg.

[0059] The source information of the raw materials used in the preparation method of low-carbon adhesive reducing agent is detailed in Table 1.

[0060] Example 5 A method for preparing a low-carbon adhesive reducing agent includes the following steps: Step 1): 50.02 kg of 1-octen-3-ol and 1.5 kg of tin tetrachloride were added to a high-pressure reactor. Nitrogen gas with a volume of 3 times that of the reactor was introduced. The reactor was then sealed and evacuated to -0.1 MPa. The temperature was raised to 75°C. Then, 179.98 kg of glycidyl ether was continuously and uniformly added dropwise over a period of 1 hour. During the addition, the pressure inside the reactor was controlled to be less than 0.4 MPa. After the addition was completed, the reactor was kept at 75°C for 3 hours. The temperature was then lowered to obtain a novel alcohol glycidyl ether monomer.

[0061] Step 2): Heat the novel alcohol glycidyl polyether monomer to 85°C, and then simultaneously add 100 kg of solution A and 100 kg of solution B. The addition time of solution A is 2.5 h and the addition time of solution B is 1.5 h. After the addition of solution A is completed, keep it at 85°C for 1 h, then add 7.6 kg of potassium carbonate, and then add water to obtain 1000 kg of aluminum phase mineral dispersant.

[0062] Step 3) Add 560.14 kg of glycerol, 188.27 kg of propylene glycol and 51.59 kg of n-propanol into the reactor, then add water, stir at 100 r / min for 1 h to obtain 1000 kg of mixed alcohol.

[0063] Step 4) Add 80 kg of aluminum phase mineral dispersant and 320 kg of mixed alcohol to a mixing tank, then add water, and stir at 120 r / min for 15 min to obtain 1000 kg of low carbon binder.

[0064] In step 2), solution A is composed of 5.5 kg of ammonium persulfate, 6 kg of mercaptopropionic acid and water, with a total mass of 100 kg.

[0065] In step 2), solution B is composed of 45.27 kg fumaric acid, 27.73 kg acrylamide, 5.6 kg sodium hypophosphite and water, with a total mass of 100 kg.

[0066] The source information of the raw materials used in the preparation method of low-carbon adhesive reducing agent is detailed in Table 1.

[0067] Table 1 Experimental Example 1 A concrete mix, prepared by the following method: Mix 6 kg of cement, 1.5 kg of mineral powder, 1.5 kg of fly ash, 21.55 kg of coarse crushed stone, 2.5 kg of fine crushed stone, 21.71 kg of sand, 4.25 kg of water, and 180 g of polycarboxylate superplasticizer evenly to obtain concrete mix.

[0068] For details on the source information of the raw materials used in concrete mix, please refer to Table 1.

[0069] Experiment Example 2 A concrete mix, prepared by the following method: 1 kg of low-carbon adhesive reducing agent and 39 kg of water were mixed evenly to obtain the working solution of the low-carbon adhesive reducing agent. The low-carbon adhesive reducing agent is the one used in Example 1.

[0070] Mix 5 kg of cement, 1.75 kg of mineral powder, 1.5 kg of fly ash, 22.3 kg of coarse crushed stone, 2.5 kg of fine crushed stone, 21.71 kg of sand, 4 kg of water, 180 g of polycarboxylate superplasticizer, and 54 g of low-carbon binder working liquid evenly to obtain concrete mix.

[0071] For details on the source information of the raw materials used in concrete mix, please refer to Table 1.

[0072] Experimental Example 3 A concrete mix, compared to Experimental Example 2, differs only in that: The low-carbon adhesive reducing agent is the low-carbon adhesive reducing agent of Example 2.

[0073] Experiment Example 4 A concrete mix, compared to Experimental Example 2, differs only in that: The low-carbon adhesive reducing agent is the low-carbon adhesive reducing agent of Example 3.

[0074] Experimental Example 5 A concrete mix, compared to Experimental Example 2, differs only in that: The low-carbon adhesive reducing agent is the low-carbon adhesive reducing agent of Example 4.

[0075] Experimental Example 6 A concrete mix, compared to Experimental Example 2, differs only in that: The low-carbon adhesive reducing agent is the low-carbon adhesive reducing agent of Example 5.

[0076] Experimental Example 7 A concrete mix, prepared by the following method: Mix 5 kg of cement, 1.75 kg of mineral powder, 1.5 kg of fly ash, 22.3 kg of coarse crushed stone, 2.5 kg of fine crushed stone, 21.71 kg of sand, 4 kg of water, 180 g of polycarboxylate superplasticizer, and 54 g of commercially available binder evenly to obtain concrete mix.

[0077] The composition of commercially available adhesive reducing agents is as follows: 2.5% diethanolamine, 2.5% triethanolamine, 95% water.

[0078] Experiment 1 The slump / spread (mm) of the concrete mix in each test case was tested according to GBT50080-2016 "Standard for Test Methods of Performance of Ordinary Concrete Mixture".

[0079] Experiment 2 According to GB / T50081-2019 "Standard for Test Methods of Physical and Mechanical Properties of Concrete", the flexural strength (MPa) and compressive strength (MPa) of the test samples prepared from the concrete mix of each experimental example were tested.

[0080] The detailed experimental data for Experiments 1-2 are shown in Table 2.

[0081] Table 2 Experiment 3 The molecular weight of the aluminum phase mineral dispersant in Example 1 was determined using a WYATT gel permeation chromatography (GPC) system.

[0082] Detailed experimental data for Experiment 3 are shown in Table 3 and Figure 1 .

[0083] Table 3 <![CDATA[M w ]]> <![CDATA[M n ]]> <![CDATA[M w / M n ]]> <![CDATA[M z <!-- 7 -->]]> 5669 4321 1.312 7165 Experiment 4 The concrete sample formed by the curing of the concrete mix in Experiment 2 was analyzed using a Japanese HITACHI-SU8010 scanning electron microscope (SEM).

[0084] For detailed experimental data of Experiment 4, please refer to [link / reference]. Figure 2-4 .

[0085] The data comparison in Table 2 shows that the addition of the low-carbon binder of Examples 1-5 to Experiments 2-6 significantly improved the flowability of the concrete mix at the mixer compared to adding the commercially available binder (Experiment 7). This indicates that the low-carbon binder prepared in each example has a good dispersion effect in concrete and, when combined with ordinary commercially available carboxylic acid-based water-reducing agents, it significantly improves the flowability. The low-carbon binder of Examples 1-5 has a certain hydrogen bond film-forming effect, which allows cement particles to fully contact water and further improves the degree of hydration, thereby significantly improving the strength of concrete while reducing the amount of cement used.

[0086] like Figure 2 As shown, the microstructure was analyzed using a Japanese HITACHI-SU8010 scanning electron microscope (SEM). The concrete cured in Experiment 2 showed a higher degree of ettringite interlacing and a stronger skeleton effect, resulting in a significant improvement in mechanical strength data.

[0087] According to Table 3 and Figure 1 As shown, the molecular weight of the aluminum phase mineral dispersant of the present invention was determined using a WYATT gel permeation chromatography (GPC) instrument from the United States. The results showed that the average molecular weight (Mz) of the dispersant in the adhesives of Examples 1-5 was 7165 g / mol. Compared with the molecular weight of water-reducing agents of more than 30,000, the molecular conformation is smaller, which can fully compensate for the fine structural regions where the large molecular weight of water-reducing agents cannot play a role.

[0088] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A method for preparing a low-carbon adhesive reducing agent, characterized in that: Includes the following steps: Step 1): Mix 40.9-59.14 parts of 1-octen-3-ol and 1-3 parts of catalyst, heat to 45-85℃ under negative pressure, then add 170.86-189.1 parts of glycidyl ether dropwise over a period of 0.5-3 hours, keep the temperature at 45-85℃ for 2-5 hours, cool down, and obtain a novel alcohol glycidyl ether monomer. Step 2): Heat the novel alcohol glycidyl polyether monomer to 75-90℃, and simultaneously add 100 parts of solution A and 100 parts of solution B. Add solution A for 2-2.5 hours and solution B for 1.5-2 hours. After the addition of solution A is complete, keep the temperature at 75-90℃ for 1-1.5 hours. Then add 5.9-9.4 parts of neutralizing agent, and then add water to obtain 1000 parts of aluminum phase mineral dispersant. Step 3): Mix 441.44-599.71 parts of triol, 141.59-328.31 parts of diol and 30.25-58.70 parts of monool, then add water and stir for 0.5-1 h to obtain 1000 parts of mixed alcohol. Step 4) Mix 75-85 parts of aluminum phase mineral dispersant and 315-325 parts of mixed alcohol, then add water and stir evenly to obtain 1000 parts of low carbon adhesive. In step 2), solution A is composed of 3.0-8.0 parts of initiator, 2.4-9.6 parts of chain transfer agent and water, with a total mass of 100 parts; In step 2), solution B is composed of 37.03-53.51 parts of acidic substances, 22.68-32.78 parts of acrylamide, 3.2-7.9 parts of reducing agent and water, with a total mass of 100 parts. All quantities mentioned are mass portions.

2. The method for preparing a low-carbon adhesive reducing agent according to claim 1, characterized in that: In step 1), the catalyst is boron trifluoride ether, tin tetrachloride, or antimony pentachloride.

3. The method for preparing a low-carbon adhesive reducing agent according to claim 1, characterized in that: In solution A, the initiator is ammonium persulfate or diisopropyl peroxide dicarbonate; the chain transfer agent is mercaptoacetic acid, mercaptoethanol, or mercaptopropionic acid.

4. The method for preparing a low-carbon adhesive reducing agent according to claim 3, characterized in that: In solution B, the acidic substance is maleic acid or fumaric acid; the reducing agent is sodium hypophosphite.

5. The method for preparing a low-carbon adhesive reducing agent according to claim 4, characterized in that: In step 2), the neutralizing agent is potassium carbonate.

6. The method for preparing a low-carbon adhesive reducing agent according to claim 1, characterized in that: In step 3), the triol is glycerol; the diol is propylene glycol or ethylene glycol; and the monool is n-propanol.

7. The method for preparing a low-carbon adhesive reducing agent according to claim 1, characterized in that: In step 1), the negative pressure is -0.1 MPa.

8. The method for preparing a low-carbon adhesive reducing agent according to claim 7, characterized in that: In step 1), 40.9-59.14 parts of 1-octen-3-ol and 1-3 parts of catalyst are mixed, nitrogen gas is introduced, and then a vacuum is drawn to a negative pressure state.

9. A low-carbon adhesive reducing agent, characterized in that: It is prepared by the method of any one of claims 1-8 for preparing the low-carbon adhesive reducing agent.

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