High-performance vinyl polyoxyethylene ether and preparation method thereof

Abstract

The invention discloses high-performance vinyl polyoxyethylene ether and a preparation method thereof, and is characterized in that the high-performance vinyl polyoxyethylene ether comprises the following components in parts by weight: 0.05-0.15 part of a catalyst; 5-10 parts by weight of a raw material alcohol; 270 to 300 parts by weight of ethylene oxide; the catalyst comprises any one of metal sodium, potassium hydroxide, sodium hydroxide and sodium hydride; the raw material alcohol is diethylene glycol monovinyl ether or 4-hydroxybutyl vinyl ether. The grouting material is mainly applied to the fields of offshore wind power generation grouting materials, prefabricated parts, water conservancy projects and the like.

Description

Technical Field

[0001] The invention relates to the technical field of polycarboxylic acid water-reducing agent macromonomers, and in particular to a high-performance vinyl polyoxyethylene ether and a preparation method thereof. Background Art

[0002] Vinyl polyoxyethylene ether is a polycarboxylic acid water-reducing agent monomer polyether. As the main raw material of polycarboxylic acid water-reducing agent, it is widely used due to its high efficiency in slump-retaining performance and economic rationality. Compared with naphthalene-based and sulfonated melamine water-reducing agents, polycarboxylic acid water-reducing agents are not only more environmentally friendly, but also have a simple synthesis process, good slump-retaining performance, low dosage, and great potential for high performance. High molecular weight vinyl polyoxyethylene ether can reduce concrete slump, exert a high plasticizing effect at low dosage, have a significant strengthening effect on concrete, and can reduce concrete shrinkage. Due to its excellent durability, construction and workability, it is widely used in new energy fields such as offshore wind power generation, water conservancy projects and other construction fields, and is the main additive for component concrete.

[0003] However, although high molecular weight vinyl polyoxyethylene ether has excellent slump retention and high strength in downstream applications, high-strength concrete is usually made of high cementitious material dosage and low water consumption, which makes it difficult to obtain good workability and uniform dispersion of cementitious materials. There are problems such as poor concrete fluidity, high viscosity, and poor pumping performance. Although this problem can be solved by adding more water, this will reduce the strength. At present, most water reducer manufacturers use a variety of water reducers in the production process to obtain viscosity-reducing water reducers, which generally have poor effects, affect the later strength, and have high production costs. The production and application of water reducers are limited. Therefore, in the application process of high-strength concrete, high-performance water reducers are very important.

[0004] In order to solve the above problems, technicians in this field are committed to developing a high-performance vinyl polyoxyethylene ether. By controlling and adjusting the synthesis process of the polyether macromonomer, the molecular weight distribution of the vinyl polyoxyethylene ether is improved, thereby obtaining a high-fluidity, high-slump-retaining viscosity-reducing polycarboxylate water-reducing agent. No need to compound the water-reducing agent, better fluidity can be obtained, solving the problem of poor fluidity and high viscosity of high-strength concrete during the application of the polycarboxylate water-reducing agent caused by the high molecular weight polyether.

[0005] Therefore, from the perspective of market demand and green environmental protection, the development of green and pollution-free viscosity-reducing polycarboxylic acid water reducers that can meet the production needs of precast concrete is an inevitable requirement for the development of the industry. From the perspective of technical methods and means, the research and development of special polyethers for viscosity-reducing polycarboxylic acid water reducers can solve the problems of poor working performance, safety and environmental protection in existing compound water reducers. Summary of the invention

[0006] The purpose of the present invention is to provide a preparation and application method of vinyl polyoxyethylene ether for water reducer. The preparation method is simple and efficient. The synthesized polycarboxylate water reducer has the application advantages of high slump retention and high fluidity, solves the problems of poor fluidity and high viscosity of high-strength concrete caused by the application process of polycarboxylate water reducer synthesized from high molecular weight polyether macromonomer, and is applied to the fields of offshore wind power generation, water conservancy engineering, etc.

[0007] The water-reducing mechanism of polycarboxylate water-reducing agent is determined by its unique comb-shaped structure, with steric hindrance as the main function. When added to concrete, it can generate strong spatial repulsion and form a barrier by being adsorbed by cement molecules, thus showing extremely strong dispersibility and dispersion retention capabilities. In the traditional polyether monomer production model, sodium alcoholate is added once, and the molecular weight distribution of the product produced is relatively concentrated. In general, the more concentrated the molecular weight distribution of polyether, the better. However, for high molecular weight polyether macromonomers, the higher the molecular weight of the polyether, the longer the side chain of the synthesized polycarboxylate water-reducing agent, the smaller its degree of freedom of swing and range of activity, which is not conducive to the enhancement of adsorption capacity. The smaller the adsorption amount of polycarboxylate water-reducing agent on the surface of cement particles, the thinner the adsorption layer, the less free water, and the higher the viscosity of the slurry.

[0008] The present invention provides a method for preparing high-performance vinyl polyoxyethylene ether, characterized in that the method of adding the initiator in stages is adopted by controlling the conditions of the ethoxylation reaction process, so that ethylene oxide simultaneously reacts with the vinyl polyoxyethylene ether oligomer and the initiator with a lower molecular weight, so as to adjust the molecular weight distribution of the vinyl polyoxyethylene ether, so that a certain amount of low molecular weight polyether is retained in the obtained high molecular weight vinyl polyoxyethylene ether macromonomer product. In the synthesis process of the water reducer, the polyether with a smaller molecular weight participates in the copolymerization, and the introduction of a shorter side chain can effectively improve the initial dispersibility of the polycarboxylic acid water reducer, and at the same time can also reduce the viscosity of the high-strength concrete, so that the synthesized water reducer has better fluidity, and high fluidity and high strength working performance can be achieved without the need for compounding the water reducer.

[0009] A high-performance vinyl polyoxyethylene ether, characterized in that it comprises the following components in parts by weight: 0.05 to 0.15 parts by weight of a catalyst, 5 to 10 parts by weight of a raw material alcohol, and 270 to 300 parts by weight of ethylene oxide.

[0010] Further, the catalyst includes any one of metallic sodium, potassium hydroxide, sodium hydroxide, and sodium hydride;

[0011] The raw alcohol includes any one of diethylene glycol monovinyl ether and 4-hydroxybutyl vinyl ether;

[0012] A method for preparing high-performance vinyl polyoxyethylene ether, characterized in that:

[0013] Step 1: 5-10 parts by weight of diethylene glycol monovinyl ether is added into a reactor, and after nitrogen replacement for 3 times, 0.05-0.15 parts by weight of metallic sodium is added, and an initiator is prepared. The pressure of the reactor is controlled below 20 kPa, and the reaction temperature is controlled at 40-60° C. The reaction is considered complete when no bubbles emerge from the liquid surface in the reactor;

[0014] Step 2: Add 6 to 10 parts by weight of the initiator obtained in step 1 into a reaction kettle, evacuate to a slight negative pressure of -30 to -20 kPa, heat to 90°C and then dropwise add 20 to 35 parts by weight of ethylene oxide, control the reaction pressure at 150 to 350 kPa, and the reaction temperature at 100 to 120°C. After the dropwise addition is completed, age for 20 minutes to fully consume the residual ethylene oxide in the kettle to obtain an oligomer for preparing vinyl polyoxyethylene ether;

[0015] Step 3: Add the oligomer obtained in step 2 into the main reaction kettle, and then add 0.5 to 2.0 parts by weight of the initiator obtained in step 1, mix well, heat to 90°C, and drop 270 to 300 parts by weight of ethylene oxide. The reaction pressure is controlled at 150 to 350 kPa, and the reaction temperature is controlled at 110 to 130°C. After the dropwise addition is completed, age for 30 minutes, evacuate the reactor to a slight negative pressure of -80 to -50 kPa, remove residual small molecules and trace impurities, and obtain a vinyl polyoxyethylene ether product with a target molecular weight of 5600 to 6200.

[0016] The invention discloses an application method of high-performance vinyl polyoxyethylene ether, comprising the steps of preparing a polyether macromonomer and deionized water to form a reaction base material, and polymerizing the polyether macromonomer with acrylic acid under the action of an initiator and a reducing agent to prepare a polycarboxylic acid-based water reducer.

[0017] The invention is characterized in that it is prepared by polymerizing the following components in parts by weight: 80 to 100 parts by weight of high-performance vinyl polyoxyethylene ether, 7 to 15 parts by weight of acrylic acid, 1.5 to 4.0 parts by weight of hydrogen peroxide, 0.1 to 0.5 parts by weight of mercaptopropionic acid, 0.5 to 1.0 parts by weight of sodium formaldehyde sulfoxylate, 0.5 to 3.0 parts by weight of sodium hydroxide, and 150 to 190 parts by weight of deionized water; wherein the polymerization reaction temperature is 10 to 30° C., and the polymerization reaction time is 30 to 50 minutes.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) In the high-performance vinyl polyoxyethylene ether macromonomer of the present invention, the unsaturated double bond in the molecular structure of the raw alcohol is directly connected to one oxygen atom to form a molecular structure of a group of CO bonds. This structure causes the distribution of the double bond electron cloud to shift, improves the charge environment of the unsaturated double bond in the macromonomer, makes it easier for the macromonomer to undergo polymerization reaction during the synthesis process of the water reducer, shortens the reaction time, and has good economic efficiency.

[0020] (2) Compared with the prior art, the high-performance polyether macromonomer provided by the present invention finds the optimal reaction conditions through process control of the ethoxylation reaction. In different reaction stages, the method of adding the initiator in stages is adopted to retain appropriate low molecular weight polyether monomers, so that the synthesized high molecular weight polyether macromonomer has a certain viscosity reduction, thereby solving the problem of high viscosity and poor fluidity of high-strength concrete.

[0021] (3) The high-performance vinyl polyoxyethylene ether macromonomer provided by the present invention breaks through the performance of existing monomers and is applied to offshore wind power generation grouting materials, prefabricated parts, water conservancy projects and other fields. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the embodiments.

[0023] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0024] Embodiment 1:

[0025] Step 1: 7.0 parts by weight of diethylene glycol monovinyl ether was added into a reactor, and after nitrogen replacement for 3 times, 0.1 parts by weight of metallic sodium was added, and an initiator was prepared. The pressure of the reactor was controlled at 20 kPa, and the reaction temperature was controlled at 40°C. The reaction was considered complete when no bubbles emerged from the liquid surface in the reactor;

[0026] Step 2: Add 6.6 parts by weight of the initiator obtained in step 1 into a pre-reaction kettle, evacuate to a slight negative pressure of -30 kPa, heat to 90°C and then dropwise add 25 parts by weight of ethylene oxide, control the reaction pressure at 150 kPa, and the reaction temperature at 110°C. After the dropwise addition is completed, age for 20 minutes to fully consume the residual ethylene oxide in the kettle to obtain the oligomer for preparing vinyl polyoxyethylene ether;

[0027] Step 3: Add the oligomer obtained in step 2 into the main reactor, and then add 0.5 parts by weight of the initiator obtained in step 1. After mixing evenly, heat to 90°C and drop 300 parts by weight of ethylene oxide. The reaction pressure is controlled at 300 kPa and the reaction temperature is controlled at 120°C. After the dropwise addition is completed, age for 30 minutes, evacuate the reactor to a slight negative pressure of -60 kPa, remove residual small molecules and trace impurities, and obtain a vinyl polyoxyethylene ether product.

[0028] Step 4: 90 parts of the vinyl polyoxyethylene ether macromonomer prepared in the above step, 7.8 parts of acrylic acid, 2.5 parts of hydrogen peroxide, 0.4 parts of mercaptopropionic acid, 0.6 parts of sodium formaldehyde sulfoxylate, 2.7 parts of sodium hydroxide, 160 parts of deionized water, the polymerization temperature is 25 ° C, the polymerization reaction time is 45 minutes, and the aging is 60 minutes to obtain a polycarboxylic acid water reducer.

[0029] Embodiment 2:

[0030] Step 1: 6.2 parts by weight of diethylene glycol monovinyl ether were added into a reactor, and after nitrogen replacement for 3 times, 0.90 parts by weight of metallic sodium were added, and an initiator was prepared. The pressure of the reactor was controlled at 20 kPa, and the reaction temperature was controlled at 50 ° C. The reaction was considered complete when no bubbles emerged from the liquid surface in the reactor;

[0031] Step 2: Add 6.0 parts by weight of the initiator obtained in step 1 into a pre-reaction kettle, evacuate to a slight negative pressure of -20 kPa, heat to 90°C and then dropwise add 23 parts by weight of ethylene oxide, control the reaction pressure at 250 kPa, and the reaction temperature at 120°C. After the dropwise addition is completed, age for 20 minutes to fully consume the residual ethylene oxide in the kettle to obtain an oligomer for preparing vinyl polyoxyethylene ether;

[0032] Step 3: Add the oligomer obtained in step 2 into the main reactor, and then add 1.1 parts by weight of the initiator obtained in step 1. After mixing evenly, heat to 90°C and drop 270 parts by weight of ethylene oxide. The reaction pressure is controlled at 300 kPa and the reaction temperature is controlled at 127°C. After the addition is completed, age for 30 minutes, evacuate the reactor to a slight negative pressure of -50 kPa, remove residual small molecules and trace impurities, and obtain a vinyl polyoxyethylene ether product.

[0033] Step 4: 100 parts of the vinyl polyoxyethylene ether macromonomer prepared in the above step, 15 parts of acrylic acid, 3.5 parts of hydrogen peroxide, 0.3 parts of mercaptopropionic acid, 1.0 parts of sodium formaldehyde sulfoxylate, 2.7 parts of sodium hydroxide, 190 parts of deionized water, the polymerization temperature is 15°C, the polymerization reaction time is 50 minutes, and the aging is 60 minutes to obtain a polycarboxylic acid water reducer.

[0034] Embodiment 3:

[0035] Step 1: 7.0 parts by weight of diethylene glycol monovinyl ether was added into a reactor, and after nitrogen replacement for 3 times, 0.1 parts by weight of metallic sodium was added, and an initiator was prepared. The pressure of the reactor was controlled at 20 kPa, and the reaction temperature was controlled at 60°C. The reaction was considered complete when no bubbles emerged from the liquid surface in the reactor;

[0036] Step 2: Add 5.6 parts by weight of the initiator obtained in step 1 into a pre-reactor, evacuate to a slight negative pressure of -25 kpa, heat to 90°C and then dropwise add 25 parts by weight of ethylene oxide, control the reaction pressure at 300 kpa, and the reaction temperature at 115°C. After the dropwise addition is completed, age for 20 minutes to fully consume the residual ethylene oxide in the reactor to obtain an oligomer for preparing vinyl polyoxyethylene ether;

[0037] Step 3: Add the oligomer obtained in step 2 into the main reactor, and then add 1.5 parts by weight of the initiator obtained in step 1, mix well, heat to 90°C, and drop 270 parts by weight of ethylene oxide, control the reaction pressure at 350 kPa, and the reaction temperature at 125°C. After the dropwise addition is completed, age for 30 minutes, evacuate the reactor to a slight negative pressure of -55 kPa, remove residual small molecules and trace impurities, and obtain a vinyl polyoxyethylene ether product;

[0038] Step 4: 80 parts of the vinyl polyoxyethylene ether macromonomer prepared in the above step, 7.0 parts of acrylic acid, 1.5 parts of hydrogen peroxide, 0.1 parts of mercaptopropionic acid, 0.5 parts of sodium formaldehyde sulfoxylate, 2.7 parts of sodium hydroxide, 160 parts of deionized water, the polymerization temperature is 20°C, the polymerization reaction time is 45 minutes, and the aging is 60 minutes to obtain a polycarboxylic acid water reducer.

[0039] Embodiment 4:

[0040] Step 1: 7.0 parts by weight of diethylene glycol monovinyl ether was added into a reactor, and after nitrogen replacement for 3 times, 0.1 parts by weight of metallic sodium was added, and an initiator was prepared. The pressure of the reactor was controlled at 20 kPa, and the reaction temperature was controlled at 40°C. The reaction was considered complete when no bubbles emerged from the liquid surface in the reactor;

[0041] Step 2: Add 6.6 parts by weight of the initiator obtained in step 1 into a pre-reaction kettle, evacuate to a slight negative pressure of -20 kpa, heat to 90°C and then dropwise add 25 parts by weight of ethylene oxide, control the reaction pressure at 250 kpa, and the reaction temperature at 110°C. After the dropwise addition is completed, age for 30 minutes to fully consume the residual ethylene oxide in the kettle to obtain the oligomer for preparing vinyl polyoxyethylene ether;

[0042] Step 3: Add the oligomer obtained in step 2 into the main reactor, and then add 0.5 parts by weight of the initiator obtained in step 1. After mixing evenly, heat to 90°C and drop 300 parts by weight of ethylene oxide. The reaction pressure is controlled at 300 kPa and the reaction temperature is controlled at 125°C. After the dropwise addition is completed, age for 30 minutes, evacuate the reactor to a slight negative pressure of -60 kPa, remove residual small molecules and trace impurities, and obtain a vinyl polyoxyethylene ether product.

[0043] Step 4: 90 parts of the vinyl polyoxyethylene ether macromonomer prepared in the above step, 9.0 parts of acrylic acid, 3.0 parts of hydrogen peroxide, 0.3 parts of mercaptopropionic acid, 0.7 parts of sodium formaldehyde sulfoxylate, 2.0 parts of sodium hydroxide, 150 parts of deionized water, the polymerization temperature is 25 ° C, the polymerization reaction time is 45 minutes, and the aging is 60 minutes to obtain a polycarboxylic acid water reducer.

[0044] Embodiment 5:

[0045] Step 1: 6.2 parts by weight of diethylene glycol monovinyl ether were added into a reactor, and after nitrogen replacement for 3 times, 0.90 parts by weight of metallic sodium were added, and an initiator was prepared. The pressure of the reactor was controlled at 20 kPa, and the reaction temperature was controlled at 50 ° C. The reaction was considered complete when no bubbles emerged from the liquid surface in the reactor;

[0046] Step 2: Add 6.0 parts by weight of the initiator obtained in step 1 into a pre-reaction kettle, evacuate to a slight negative pressure of -25 kpa, heat to 90°C and then dropwise add 23 parts by weight of ethylene oxide, control the reaction pressure at 300 kpa, and the reaction temperature at 110°C. After the dropwise addition is completed, age for 20 minutes to fully consume the residual ethylene oxide in the kettle to obtain an oligomer for preparing vinyl polyoxyethylene ether;

[0047] Step 3: Add the oligomer obtained in step 2 into the main reactor, and then add 1.1 parts by weight of the initiator obtained in step 1. After mixing evenly, heat to 90°C and drop 270 parts by weight of ethylene oxide. The reaction pressure is controlled at 300 kPa and the reaction temperature is controlled at 123°C. After the dropwise addition is completed, age for 30 minutes, evacuate the reactor to a slight negative pressure of -70 kPa, remove residual small molecules and trace impurities, and obtain a vinyl polyoxyethylene ether product.

[0048] Step 4: 95 parts of the vinyl polyoxyethylene ether macromonomer prepared in the above step, 7.0 parts of acrylic acid, 2.7 parts of hydrogen peroxide, 0.2 parts of mercaptopropionic acid, 0.6 parts of sodium formaldehyde sulfoxylate, 3.0 parts of sodium hydroxide, 170 parts of deionized water, the polymerization temperature is 20 ° C, the polymerization reaction time is 45 minutes, and the aging is 60 minutes to obtain a polycarboxylic acid water reducer.

[0049] Comparative Example 1:

[0050] Step 1: 7.0 parts by weight of diethylene glycol monovinyl ether is added to a reactor, and after nitrogen replacement for 3 times, 0.1 parts by weight of metallic sodium is added, and an initiator is prepared. The pressure of the reactor is controlled at 20 kPa, and the reaction temperature is controlled at 60°C. The reaction is completed until the temperature no longer rises and no bubbles emerge from the liquid surface in the reactor;

[0051] Step 2: Add 7.1 parts by weight of the initiator obtained in step 1 into a pre-reaction kettle, evacuate to a slight negative pressure of -20 kPa, heat to 90°C and then drop 25 parts by weight of ethylene oxide, control the reaction pressure at 300 kPa, and the reaction temperature at 115°C. After the dropwise addition is completed, age for 20 minutes to fully consume the residual ethylene oxide in the kettle to obtain an oligomer for preparing vinyl polyoxyethylene ether;

[0052] Step 3: Add the oligomer obtained in step 2 into the main reactor, mix well and heat to 90°C, then drop 285 parts by weight of ethylene oxide, control the reaction pressure at 350 kPa, and the reaction temperature at 125°C. After the dropwise addition, age for 30 minutes, evacuate the reactor to a slight negative pressure of -50 kPa, remove residual small molecules and trace impurities, and obtain the vinyl polyoxyethylene ether product.

[0053] Step 4: 87 parts of the vinyl polyoxyethylene ether macromonomer prepared in the above step, 8.0 parts of acrylic acid, 2.7 parts of hydrogen peroxide, 0.5 parts of mercaptopropionic acid, 0.6 parts of sodium formaldehyde sulfoxylate, 2.7 parts of sodium hydroxide, 160 parts of deionized water, the polymerization temperature is 20°C, the polymerization reaction time is 45 minutes, and the aging is 60 minutes to obtain a polycarboxylic acid water reducer.

[0054] The present invention verifies the performance of polyether monomers by conducting a slurry flowability test, combining a concrete strength test, and conducting relevant product index tests. The cement slurry flowability is determined according to GB / T8077-2012 (Concrete admixture homogeneity test method), and the initial slurry flowability is tested as a parameter to characterize its performance; the concrete strength test is carried out according to the relevant provisions of GB / T50081-2002 "Standard for Test Methods of Mechanical Properties of Ordinary Concrete", and the compressive strength of hardened concrete is determined; and the viscosity of the initial cement slurry is measured with reference to GB10247-2008 "Viscosity Measurement Method". The test cement is P·O 42.5 grade cement, and the C80 concrete mix ratio is shown in Table 1.

[0055] Table 1C80 concrete mix ratio

[0056] cement Fly ash Mineral powder Silica Fume sand stone water 360 80 80 40 630 1120 140

[0057] The polyether monomers prepared in the above examples were subjected to relevant index analysis tests to verify product performance. The test results are shown in Table 2 below:

[0058] Table 2 Polyether monomer product index test results

[0059]

[0060] From the analysis and test results in Table 2, it can be seen that the high-performance vinyl polyoxyethylene ether macromonomer of the present invention controls the reaction process conditions, and the performance indicators of the product are qualified and meet the indicator requirements.

[0061] The high-performance vinyl polyoxyethylene ether macromonomer obtained in the above embodiment was polymerized to obtain a polycarboxylic acid-based water reducer. The test results were shown in Tables 3 and 4 below, in combination with the slurry flowability test and the concrete compressive strength test, and the initial cement slurry viscosity was measured.

[0062] Table 3 Cement paste test results

[0063] serial number Initial fluidity / mm 1h fluidity / mm 2h fluidity / mm Neat slurry viscosity / (mPa·s) Example 1 205 210 180 1940 Example 2 220 210 185 1760 Example 3 235 220 200 1680 Example 4 213 208 195 1830 Example 5 230 210 188 1790 Comparative Example 1 185 200 170 2530

[0064] It can be seen from the test results in Table 3 that under the same water reducer dosage conditions, as the proportion of the initiator added in stages in the polyether monomer increases, the proportion of small molecular weight polyether retained in the polyether monomer increases, the short side chain polymer of the synthesized water reducer increases, the short side chain polymer is more easily adsorbed by cement particles, the initial dispersibility is enhanced, and the viscosity of the net slurry is reduced.

[0065] Table 4 Concrete performance test results

[0066]

[0067] It can be seen from Table 4 that the preparation and application method of the high-performance vinyl polyoxyethylene ether provided by the present invention can effectively reduce the viscosity of concrete without adversely affecting the compressive strength of concrete, and can effectively improve the pumping performance of concrete.

[0068] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A high-performance vinyl polyoxyethylene ether, characterized in that: Including the following parts by weight composition: 0.05-0.15 parts by weight of catalyst; 5-10 parts by weight of raw alcohol; 270-300 parts by weight of ethylene oxide; The catalyst includes any one of metallic sodium, potassium hydroxide, sodium hydroxide, and sodium hydride; The raw alcohol is diethylene glycol monovinyl ether or 4-hydroxybutyl vinyl ether, and the reaction adopts a segmented addition method to achieve the arrangement of long chains and short chains according to the designed molecular model.

2. The method for preparing a high-performance vinyl polyoxyethylene ether according to claim 1, characterized in that: The following steps are involved: Step 1: 5-10 parts by weight of diethylene glycol monovinyl ether is added into a reactor, and after nitrogen replacement for 3 times, 0.05-0.15 parts by weight of metallic sodium is added, and an initiator is prepared. The pressure of the reactor is controlled at 20 kPa, and the reaction temperature is controlled at 40-60° C. The reaction is considered complete when no bubbles emerge from the liquid surface in the reactor; Step 2: Add 6 to 10 parts by weight of the initiator obtained in step 1 into a reaction kettle, evacuate to a slight negative pressure of -30 to -20 kPa, heat to 90°C and then dropwise add 20 to 35 parts by weight of ethylene oxide, control the reaction pressure at 150 to 350 kPa, and the reaction temperature at 100 to 120°C. After the dropwise addition is completed, age for 20 to 30 minutes to fully consume the residual ethylene oxide in the kettle to obtain an oligomer for preparing vinyl polyoxyethylene ether; Step 3: Add the oligomer obtained in step 2 into the main reaction kettle, and then add 0.5 to 2.0 parts by weight of the initiator obtained in step 1, mix well, heat to 90°C, and drop 270 to 300 parts by weight of ethylene oxide. The reaction pressure is controlled at 150 to 350 kPa, and the reaction temperature is controlled at 110 to 130°C. After the dropwise addition is completed, age for 30 minutes, evacuate the reactor to a slight negative pressure of -80 to -50 kPa, remove residual small molecules and trace impurities, and obtain a vinyl polyoxyethylene ether product with a target molecular weight of 5600 to 6200.

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