Liquid rubber used for pumping energy storage and having storage stability and preparation method thereof

Abstract

The invention provides liquid rubber used for water pumping energy storage and having storage stability and a preparation method thereof. The liquid rubber comprises 40-70 parts of density adjusting asphalt, 30-55 parts of a high-molecular polymer emulsion, 1-3 parts of a dispersant, 1-3 parts of a defoaming agent, 0.5-3 parts of a stabilizer and 1-3 parts of an ultraviolet aging agent. Wherein the density adjusting asphalt comprises modified anionic emulsified asphalt and a density adjusting agent, and the density adjusting agent comprises rosin resin and / or coumarone resin; the density range of the modified anionic emulsified asphalt is 0.99-1.05 g / cm < 3 >, the density range of the high-molecular polymer emulsion is 1.06-1.18 g / cm < 3 >, and the density range of the density regulator is 1.05-1.15 g / cm < 3 >. By adding the density regulator into the liquid rubber, the density difference between the modified anionic emulsified asphalt and the high-molecular polymer emulsion is reduced, and the overall stability of the liquid rubber is improved.

Description

Technical Field

[0001] The invention relates to the field of polymer materials, in particular to a liquid rubber used for pumping water and storing energy and having storage stability, and a preparation method thereof. Background Art

[0002] Liquid rubber, also known as spray quick-setting rubber asphalt waterproof coating, is a new type of waterproof coating with excellent tensile strength, flexibility, high temperature resistance, low temperature resistance, aging resistance and other excellent properties. It can cover the base surface well and adapt to various detailed structures. It has excellent application effects in pumping energy storage, municipal pipeline corridors, high-speed rail tunnels, roof and underground waterproofing, indoor waterproofing and anti-corrosion projects.

[0003] However, liquid rubber usually has poor stability. It will begin to stratify after being placed in cool and dry conditions for about 15 days. The stratification phenomenon will become gradually obvious over time, and the layers will become thicker. The higher the temperature, the faster the stratification. Pumped storage scenarios generally do not have the corresponding storage environment as in conventional scenarios, and the conditions are even worse. As a result, the liquid rubber usually needs to be re-stirred before use during construction. On the one hand, this affects the construction efficiency. On the other hand, severe stratification may affect the performance of the liquid rubber. Summary of the invention

[0004] The technical problem to be solved by the present application is to provide a liquid rubber for water pumping and energy storage with excellent storage stability and a preparation method thereof, so as to improve the storage stability of the liquid rubber and reduce the occurrence of stratification.

[0005] In order to solve the above problems, the present invention discloses a liquid rubber for pumping water energy storage and having excellent storage stability, comprising:

[0006] Density adjustment asphalt 40-70 parts, high molecular polymer emulsion 30-55 parts, dispersant 1-3 parts, defoamer 1-3 parts, stabilizer 0.5-3 parts, UV aging agent 1-3 parts;

[0007] Wherein, the density-adjusting asphalt comprises modified anionic emulsified asphalt and a density adjuster, and the density adjuster comprises rosin resin and / or coumarone resin, which is used to reduce the density difference between the modified anionic emulsified asphalt and the high molecular polymer emulsion;

[0008] The density of the modified anionic emulsified asphalt is in the range of 0.99-1.05 g / cm 3 The density of the polymer emulsion is in the range of 1.06-1.18 g / cm 3 The density range of the density adjusting agent is 1.05 to 1.15 g / cm 3 .

[0009] Optionally, the modified anionic emulsified asphalt comprises 30-80 parts of No. 30-70 base asphalt, 0.5-3 parts of modifier, 10-20 parts of solubilizing oil, 2-8 parts of anionic surfactant, 1-5 parts of anionic emulsifier, 40-70 parts of deionized water, 5-10 parts of alkali, and 20-40 parts of inorganic salt;

[0010] The density adjuster specifically includes 10-25 parts of rosin resin and / or 10-30 parts of coumarone resin.

[0011] Optionally, the high molecular polymer emulsion includes at least one of chloroprene emulsion, styrene-butadiene emulsion, acrylic emulsion, polycarbonate elastic emulsion, silicone rubber emulsion, nitrile emulsion, and natural rubber emulsion.

[0012] Optionally, the dispersant includes at least one of sodium methyl bisnaphthalene sulfonate, sodium methylene bismethyl sulfonate, sodium acrylate acrylamide copolymer, sodium polyacrylate, and sodium cellulose sulfonate; the stabilizer is prepared by compounding disproportionated rosin soap, phosphate dispersant, and water; and the ultraviolet aging agent is hydrophilic 2-(2-hydroxyphenyl)-benzotriazole.

[0013] Optionally, the modifier is at least one of SBR particles, SBS particles, SIS particles, and NBR particles.

[0014] Optionally, the solubilizing oil is at least one of cycloparaffin oil, aromatic oil, white oil, and rubber filler oil.

[0015] Optionally, the anionic surfactant is dodecyl diphenyl ether sulfonate and / or naphthyl ditetradecyl disulfonate; the anionic emulsifier is at least one of oleic acid, sodium dodecylbenzene sulfonate, and phosphate.

[0016] Optionally, the inorganic salt is at least one of calcium chloride, potassium chloride, sodium chloride, sodium sulfate and potassium sulfate.

[0017] The present invention also provides a method for preparing a liquid rubber for water pumping energy storage and having excellent storage stability, the method comprising:

[0018] 40-70 parts of density adjustment asphalt, 30-55 parts of high molecular polymer emulsion, 1-3 parts of dispersant, 1-3 parts of defoamer, 0.5-3 parts of stabilizer and 1-3 parts of ultraviolet aging agent are mixed at 40-60°C, added into ultrasonic stirring equipment and mixed for 0.5-1.5 hours, and then the temperature is lowered to room temperature to obtain liquid rubber;

[0019] Wherein, the density-adjusting asphalt comprises modified anionic emulsified asphalt and a density adjuster, and the density adjuster comprises rosin resin and / or coumarone resin, which is used to reduce the density difference between the modified anionic emulsified asphalt and the high molecular polymer emulsion;

[0020] The density of the modified anionic emulsified asphalt is in the range of 0.99-1.05 g / cm 3 The density of the polymer emulsion is in the range of 1.06-1.18 g / cm 3 The density range of the density adjusting agent is 1.05 to 1.15 g / cm 3 .

[0021] Optionally, the preparation method of the density-adjusted asphalt is:

[0022] Mix 10-55 parts of the density adjuster, 30-80 parts of No. 30-70 base asphalt, 0.5-3 parts of the modifier, and 10-20 parts of the solubilizing oil at 170-190° C. until the solid particles are completely dissolved to obtain component A; cool component A to 120-140° C. for standby use;

[0023] Wherein, the density adjusting agent specifically comprises 10-25 parts of rosin resin and / or 10-30 parts of coumarone resin;

[0024] Mix 2-8 parts of anionic surfactant, 1-5 parts of anionic emulsifier, 40-70 parts of deionized water, 5-10 parts of alkali, and 20-40 parts of inorganic salt at 50-70° C. until the solid particles are completely dissolved to obtain component B for use;

[0025] Component A and component B are ground and sheared together in a colloid mill to obtain a density-adjusted asphalt at a temperature of about 85°C.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] The liquid rubber for pumping and energy storage with excellent storage stability provided by the embodiment of the present invention comprises: 40-70 parts of density-adjusting asphalt, 30-55 parts of high molecular polymer emulsion, 1-3 parts of dispersant, 1-3 parts of defoaming agent, 0.5-3 parts of stabilizer, and 1-3 parts of ultraviolet aging agent; wherein the density-adjusting asphalt comprises modified anionic emulsified asphalt and density-adjusting agent, and the density-adjusting agent comprises rosin resin and / or coumarone resin, which is used to reduce the density difference between the modified anionic emulsified asphalt and the high molecular polymer emulsion; the density range of the modified anionic emulsified asphalt is 0.99-1.05 g / cm 3 The density of the polymer emulsion is in the range of 1.06-1.18 g / cm 3 The density range of the density adjusting agent is 1.05 to 1.15 g / cm 3By adding a density adjuster to the liquid rubber, the density difference between the modified anionic emulsified asphalt and the polymer emulsion is reduced, thereby reducing the separation of the anionic emulsified asphalt from the polymer emulsion and improving the overall stability of the liquid rubber. It can achieve no stratification of the liquid rubber within 6 months under harsh conditions, which is suitable for pumped energy storage scenarios. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with specific implementation methods.

[0029] In an embodiment of the present invention, the present invention discloses a liquid rubber for pumping water for energy storage and having excellent storage stability, comprising:

[0030] Density adjustment asphalt 40-70 parts, high molecular polymer emulsion 30-55 parts, dispersant 1-3 parts, defoamer 1-3 parts, stabilizer 0.5-3 parts, UV aging agent 1-3 parts;

[0031] Wherein, the density-adjusting asphalt comprises modified anionic emulsified asphalt and a density adjuster, and the density adjuster comprises rosin resin and / or coumarone resin, which is used to reduce the density difference between the modified anionic emulsified asphalt and the high molecular polymer emulsion;

[0032] In an embodiment of the present invention, the modified anionic emulsified asphalt and the high molecular polymer emulsion in the liquid rubber may generally have a density difference, in which case the modified anionic emulsified asphalt and the high molecular polymer emulsion may gradually separate to form a layer. According to the Stokes sedimentation formula, the sedimentation velocity of solid particles in a liquid is related to the density, and the greater the density difference, the faster the sedimentation velocity may be. Therefore, in order to avoid the stratification of the liquid rubber, the modified anionic emulsified asphalt may be treated with a density adjuster to reduce the density difference between the modified anionic emulsified asphalt and the high molecular polymer emulsion, thereby alleviating the stratification phenomenon in the liquid rubber.

[0033] Specifically, the density of modified anionic emulsified asphalt can range from 0.99-1.05 g / cm 3 The density of polymer emulsion is in the range of 1.06-1.18 g / cm 3 , and the density range of density adjuster is 1.05~1.15g / cm 3 Therefore, the density adjuster can increase the density of the modified anionic emulsified asphalt to a range close to that of the high molecular polymer emulsion, thereby making the liquid rubber relatively stable as a whole.

[0034] The density adjuster may include 10-25 parts of rosin resin and / or 10-30 parts of coumarone resin. The density of rosin resin is 1.060-1.120 g / cm 3 The density of coumarone resin is 1.05~1.15g / cm 3 .

[0035] In one embodiment of the present invention, the modified anionic emulsified asphalt comprises 30-80 parts of No. 30-70 base asphalt, 0.5-3 parts of modifier, 10-20 parts of solubilizing oil, 2-8 parts of anionic surfactant, 1-5 parts of anionic emulsifier, 40-70 parts of deionized water, 5-10 parts of alkali, and 20-40 parts of inorganic salt;

[0036] Specifically, the matrix asphalt can be No. 30-70, and the lower the number, the higher the density of the matrix can be, so that the density difference of the matrix asphalt relative to the high molecular polymer emulsion can be reduced, which is more conducive to maintaining the stability of the matrix asphalt. However, the matrix asphalt with a low number has a higher emulsification difficulty, thereby increasing the production difficulty. Thus, No. 50 matrix asphalt can be preferably used to prepare modified anionic emulsified asphalt, which can have a relatively high density and is easier to emulsify.

[0037] The modifier can be at least one of SBR particles, SBS particles, SIS particles, and NBR particles. The main purpose of adding the modifier is to increase the toughness of the matrix asphalt, increase the heat resistance, and reduce the softening point. The amount can be 0.5-3 parts to avoid the emulsification difficulty caused by too much modifier.

[0038] The solubilizing oil may be at least one of cycloparaffinic oil, aromatic oil, white oil, and rubber filler oil, which can increase the compatibility of the modifier with the base asphalt, so that the modifier and the base asphalt can be better mixed and the modification treatment effect can be improved.

[0039] The anionic emulsifier may be at least one of oleic acid, sodium dodecylbenzene sulfonate, and phosphate. The anionic emulsifier may form a double electric layer on the surface of the asphalt particles, so that the asphalt particles have a certain electrostatic repulsion, and when the asphalt particles contact each other, the asphalt particles are prevented from agglomerating together, so that the matrix asphalt can be evenly dispersed in the aqueous solution containing the emulsifier in the form of droplets.

[0040] The anionic surfactant may be an anionic gemini surfactant, which may include dodecyl diphenyl ether sulfonate and / or naphthyl ditetradecyl disulfonate. The anionic gemini surfactant has two hydrophilic groups and two lipophilic groups in its molecular structure, and can be used as a dispersant for additives such as modifiers and solubilizers and an emulsifier for base asphalt. Because it has a higher potential energy and charge density, it can make the double electric layer structure formed on the surface of asphalt particles more stable.

[0041] Specifically, the anionic surfactant can preferably have a lipophilic benzene ring structure, because asphalt contains a large amount of cyclic hydrocarbons, and the lipophilic benzene ring structure can be a better combination of anionic surfactant and base asphalt. For the same reason, anionic emulsifiers can also be selected that contain a lipophilic benzene ring structure.

[0042] In one embodiment of the present invention, anionic surfactants and anionic emulsifiers can be more stable under alkaline conditions, so the modified anionic emulsified asphalt can also include alkali, which is mainly used to adjust the pH value, and can be sodium hydroxide, calcium hydroxide, potassium hydroxide, etc. The present invention is not limited to this.

[0043] In one embodiment of the present invention, in order to increase the charge density of the system and thus increase the double layer strength of the emulsion particles, remove the polarization effect of water, and increase the overall density of the water phase system, thereby further reducing the separation rate from the high molecular polymer emulsion and improving the stability of the liquid rubber, the modified anionic emulsified asphalt may also include inorganic salts, and water-soluble inorganic salts may be selected, including at least one of calcium chloride, potassium chloride, sodium chloride, sodium sulfate, and potassium sulfate.

[0044] In one embodiment of the present invention, the high molecular polymer emulsion includes at least one of chloroprene emulsion, styrene-butadiene emulsion, acrylic emulsion, polycarbonate elastic emulsion, silicone rubber emulsion, nitrile emulsion, and natural rubber emulsion.

[0045] In one embodiment of the present invention, the dispersant includes at least one of sodium methyl bisnaphthalene sulfonate, sodium methylene bismethyl sulfonate, sodium acrylate acrylamide copolymer, sodium polyacrylate, and sodium cellulose sulfonate.

[0046] In one embodiment of the present invention, the stabilizer is prepared by compounding disproportionated rosin soap, phosphate dispersant and water. Specifically, the compounding ratio can be a mass ratio of disproportionated rosin soap, phosphate dispersant and water of 3:2:5.

[0047] In one embodiment of the present invention, the ultraviolet aging agent is hydrophilic 2-(2-hydroxyphenyl)-benzotriazole, which is commercially available as BASF TINUVIN5151. It can strongly absorb ultraviolet light to which the polymer is sensitive, and can convert energy into harmless heat energy and release it, thereby increasing the anti-aging properties of the final product and increasing its service life.

[0048] In one embodiment of the present invention, the defoaming agent may be a commonly used silicone defoaming agent on the market, such as byk-024, byk-023, TEGO-810, etc., and the present invention is not limited thereto.

[0049] The present invention also provides a method for preparing a liquid rubber for water pumping energy storage and having excellent storage stability, the method comprising:

[0050] 40-70 parts of density-adjusting asphalt, 30-55 parts of high molecular polymer emulsion, 1-3 parts of dispersant, 1-3 parts of defoaming agent, 0.5-3 parts of stabilizer and 1-3 parts of ultraviolet aging agent are mixed at 40-60°C, added into an ultrasonic stirring device and mixed for 0.5-1.5 hours, and then the temperature is lowered to room temperature to obtain liquid rubber; wherein, the mechanical stirring of the ultrasonic stirring device and the ultrasonic oscillation dispersion work together to make the particles of different systems dispersed more evenly.

[0051] Wherein, the density-adjusting asphalt comprises modified anionic emulsified asphalt and a density adjuster, and the density adjuster comprises rosin resin and / or coumarone resin, which is used to reduce the density difference between the modified anionic emulsified asphalt and the high molecular polymer emulsion;

[0052] The density of the modified anionic emulsified asphalt is in the range of 0.99-1.05 g / cm 3 The density of the polymer emulsion is in the range of 1.06-1.18 g / cm 3 The density range of the density adjusting agent is 1.05 to 1.15 g / cm 3 .

[0053] Optionally, the preparation method of the density-adjusted asphalt is:

[0054] Mix 10-55 parts of the density adjuster, 30-80 parts of No. 30-70 base asphalt, 0.5-3 parts of the modifier, and 10-20 parts of the solubilizing oil at 170-190° C. until the solid particles are completely dissolved to obtain component A; cool component A to 120-140° C. for standby use;

[0055] Wherein, the density adjusting agent specifically comprises 10-25 parts of rosin resin and / or 10-30 parts of coumarone resin;

[0056] Mix 2-8 parts of anionic surfactant, 1-5 parts of anionic emulsifier, 40-70 parts of deionized water, 5-10 parts of alkali, and 20-40 parts of inorganic salt at 50-70° C. until the solid particles are completely dissolved to obtain component B for use;

[0057] Component A and component B are ground and sheared together in a colloid mill to obtain a density-adjusted asphalt at a temperature of about 85°C.

[0058] In order to enable those skilled in the art to better understand the present invention, the preparation method of the liquid rubber of the present invention is described below through a plurality of specific embodiments.

[0059] Example 1

[0060] Density Adjusted Asphalt Preparation

[0061] 1) 35 parts of No. 50 base asphalt, 15 parts of rosin resin, 25 parts of coumarone resin, 1.5 parts of SBS particles, 0.5 parts of SIS particles, 5 parts of naphthenic oil, and 10 parts of aromatic oil are placed in a heating kettle, heated to 180°C until the solid particles are completely dissolved, and then cooled to 130°C to obtain component A for standby use;

[0062] 2) 1.5 parts of dodecyl diphenyl ether sulfonate, 2 parts of naphthalene ditetradecyl disulfonate, 3 parts of sodium oleate, 1 part of sodium dodecylbenzene sulfonate, 30 parts of sodium sulfate, 55 parts of deionized water, and 8 parts of sodium hydroxide were placed in another heating kettle and heated to 60° C. until the solid content was completely dissolved to obtain component B for standby use;

[0063] 3) Grind and shear component A and component B in a mass ratio of 55:45 through a colloid mill to obtain a density-adjusted asphalt at a temperature of about 85°C.

[0064] Liquid rubber preparation

[0065] Density-adjusted asphalt at 50°C, 25 parts of chloroprene emulsion, 10 parts of styrene-butadiene emulsion, 1.5 parts of dispersant sodium methylbisnaphthalene sulfonate, 2 parts of stabilizer, 1.5 parts of silicone defoamer BYK-024, and 2 parts of ultraviolet aging agent hydrophilic 2-(2-hydroxyphenyl)-benzotriazole are added into an ultrasonic stirring device and mixed for 1 hour under the action of mechanical stirring and ultrasonic dispersion. After the temperature of the finished product drops to room temperature, it is filtered through 60 mesh to obtain a liquid rubber product.

[0066] Example 2

[0067] Density Adjusted Asphalt Preparation

[0068] 1) Put 30 parts of No. 70 base asphalt, 10 parts of rosin resin, 20 parts of coumarone resin, 2 parts of SBR particles, 1 part of NBR particles, 7 parts of white oil, and 9 parts of rubber filler oil into a heating kettle, heat to 190°C until the solid particles are completely dissolved, and cool to 130°C to obtain component A for standby use;

[0069] 2) 3 parts of dodecyl diphenyl ether sulfonate, 2 parts of naphthyl ditetradecyl disulfonate, 2 parts of sodium oleate, 3 parts of sodium dodecylbenzene sulfonate, 25 parts of sodium chloride, 60 parts of deionized water, and 9 parts of sodium hydroxide were placed in another heating kettle and heated to 65° C. until the solids were completely dissolved to obtain component B for standby use;

[0070] 3) Grind and shear component A and component B in a mass ratio of 60:40 through a colloid mill to obtain a density-adjusted asphalt at a temperature of about 85°C, and cool it to 50°C for standby use;

[0071] Preparation of liquid rubber

[0072] Add 65 parts of the above-mentioned density-adjusted asphalt at 50°C, 20 parts of acrylic emulsion, 15 parts of polycarbonate elastic emulsion, 5 parts of silicone rubber emulsion, 2 parts of dispersant sodium methylbisnaphthalenesulfonate, 1.5 parts of stabilizer, 1 part of silicone defoamer BYK-024, and 3 parts of ultraviolet aging agent hydrophilic 2-(2-hydroxyphenyl)-benzotriazole into an ultrasonic stirring device, mix for 1 hour under the action of mechanical stirring and ultrasonic dispersion, and filter through 60 mesh after the temperature of the finished product drops to room temperature to obtain a liquid rubber product.

[0073] Example 3

[0074] Density Adjusted Asphalt Preparation

[0075] 1) Put 40 parts of No. 30 base asphalt, 15 parts of rosin resin, 20 parts of coumarone resin, 2 parts of SBS particles, 0.5 parts of NBR particles, 7 parts of naphthenic oil, and 12 parts of white oil into a heating kettle, heat to 185°C until the solid particles are completely dissolved, and cool to 130°C to obtain component A for standby use;

[0076] 2) 3 parts of dodecyl diphenyl ether sulfonate, 1 part of naphthalene ditetradecyl disulfonate, 4 parts of sodium oleate, 1 part of sodium dodecylbenzene sulfonate, 20 parts of calcium chloride, 55 parts of deionized water, and 7 parts of sodium hydroxide are placed in another heating kettle and heated to 60° C. until the solid content is completely dissolved to obtain component B for use;

[0077] 3) Grind and shear component A and component B in a colloid mill in a mass ratio of 50:50 to obtain a density-adjusted asphalt at a temperature of about 84°C, and cool it to 50°C for standby use;

[0078] Liquid rubber preparation

[0079] Add 50 parts of the above-mentioned 50°C density-adjusted asphalt, 15 parts of nitrile emulsion, 40 parts of natural rubber emulsion, 1.5 parts of dispersant sodium methylbisnaphthalene sulfonate, 1 part of stabilizer, 2 parts of silicone defoamer BYK-024, and 3 parts of ultraviolet aging agent hydrophilic 2-(2-hydroxyphenyl)-benzotriazole into an ultrasonic stirring equipment, mix for 1 hour under the action of mechanical stirring and ultrasonic dispersion, and filter through 60 mesh after the temperature of the finished product drops to room temperature to obtain a liquid rubber product.

[0080] Example 4

[0081] Density Adjusted Asphalt Preparation

[0082] 1) Put 25 parts of No. 30 base asphalt, 25 parts of No. 50 base asphalt, 20 parts of rosin resin, 20 parts of coumarone resin, 2 parts of SBS particles, 0.5 parts of NBR particles, 6 parts of naphthenic oil, 5 parts of white oil, and 5 parts of rubber filler oil into a heating kettle, heat to 185°C until the solid particles are completely dissolved, and cool to 130°C to obtain component A for standby use;

[0083] 2) 3 parts of dodecyl diphenyl ether sulfonate, 2 parts of naphthalene ditetradecyl disulfonate, 1 part of sodium oleate, 1 part of sodium dodecylbenzene sulfonate, 25 parts of potassium sulfate, 60 parts of deionized water, and 9 parts of sodium hydroxide are placed in another heating kettle and heated to 60° C. until the solid content is completely dissolved to obtain component B for standby use;

[0084] 3) Grind and shear component A and component B in a mass ratio of 55:45 in a colloid mill to obtain a modified anionic emulsified asphalt at a temperature of about 85°C, and cool it to 50°C for standby use;

[0085] Liquid rubber preparation

[0086] Add 60 parts of the above-mentioned 50°C density-adjusted asphalt, 15 parts of chloroprene emulsion, 30 parts of natural rubber emulsion, 2 parts of dispersant sodium methylbisnaphthalenesulfonate, 1.5 parts of stabilizer, 1.5 parts of silicone defoamer BYK-024, and 1 part of ultraviolet aging agent hydrophilic 2-(2-hydroxyphenyl)-benzotriazole into an ultrasonic stirring device, mix for 1 hour under the action of mechanical stirring and ultrasonic dispersion, and filter through 60 mesh after the temperature of the finished product drops to room temperature to obtain a liquid rubber product.

[0087] Example 5

[0088] Density Adjusted Asphalt Preparation

[0089] 1) Put 80 parts of No. 50 base asphalt, 25 parts of rosin resin, 10 parts of coumarone resin, 0.5 parts of SBS particles, 5 parts of naphthenic oil, and 5 parts of aromatic oil into a heating kettle, heat to 180°C until the solid particles are completely dissolved, and cool to 130°C to obtain component A for standby use;

[0090] 2) 1.5 parts of dodecyl diphenyl ether sulfonate, 2 parts of naphthalene ditetradecyl disulfonate, 4 parts of sodium lauryl phosphate, 4 parts of sodium dodecylbenzene sulfonate, 40 parts of potassium chloride, 40 parts of deionized water, and 10 parts of calcium hydroxide are placed in another heating kettle, and heated to 60° C. until the solid content is completely dissolved to obtain component B for use;

[0091] 3) Grind and shear component A and component B in a colloid mill at a mass ratio of 50:50 to obtain a density-adjusted asphalt at a temperature of about 85°C;

[0092] Liquid rubber preparation

[0093] Density-adjusted asphalt at 50°C, 15 parts of chloroprene emulsion, 15 parts of natural rubber emulsion, 1 part of dispersant sodium methylenebis(methyl sulfonate), 2 parts of sodium acrylate acrylamide copolymer, 0.5 parts of stabilizer, 3 parts of silicone defoamer BYK-024, and 3 parts of ultraviolet aging agent hydrophilic 2-(2-hydroxyphenyl)-benzotriazole are added into an ultrasonic stirring device, mixed for 1 hour under the action of mechanical stirring and ultrasonic dispersion, and filtered through 60 mesh after the temperature of the finished product drops to room temperature to obtain a liquid rubber product.

[0094] Example 6

[0095] Density Adjusted Asphalt Preparation

[0096] 1) Put 30 parts of No. 50 base asphalt, 10 parts of rosin resin, 30 parts of coumarone resin, 3 parts of SBS particles, 10 parts of naphthenic oil, and 10 parts of aromatic oil into a heating kettle, heat to 180°C until the solid particles are completely dissolved, and cool to 130°C to obtain component A for standby use;

[0097] 2) 1.5 parts of dodecyl diphenyl ether sulfonate, 2 parts of naphthalene ditetradecyl disulfonate, 3 parts of sodium lauryl phosphate, 3 parts of sodium dodecylbenzene sulfonate, 20 parts of sodium chloride, 70 parts of deionized water, and 5 parts of sodium hydroxide were placed in another heating kettle, heated to 60° C. until the solid content was completely dissolved, to obtain component B for use;

[0098] 3) Grind and shear component A and component B in a colloid mill at a mass ratio of 50:50 to obtain a density-adjusted asphalt at a temperature of about 85°C;

[0099] Liquid rubber preparation

[0100] The density-adjusted asphalt at 50°C, 20 parts of styrene-butadiene emulsion, 10 parts of acrylic emulsion, 0.5 parts of dispersant sodium cellulose sulfonate, 0.5 parts of sodium polyacrylate, 3 parts of stabilizer, 1 part of silicone defoamer BYK-024, and 1 part of ultraviolet aging agent hydrophilic 2-(2-hydroxyphenyl)-benzotriazole are added into an ultrasonic stirring device, mixed for 1 hour under the action of mechanical stirring and ultrasonic dispersion, and filtered through 60 mesh after the temperature of the finished product drops to room temperature to obtain a liquid rubber product.

[0101] Compared with commercially available liquid rubber, the embodiments of the present invention can significantly improve storage stability and maintain good physical properties. The following describes some advantages of the embodiments of the present invention compared with the prior art through specific experimental data.

[0102]

[0103] Table 1 Physical properties test results

[0104] Referring to Table 1, it can be seen that the liquid rubber provided by the embodiment of the present invention can maintain storage stability for more than 7 months, which is significantly improved compared to the commercially available liquid rubber which can only maintain non-delamination for 15 days. Moreover, the physical properties required by the liquid rubber, such as tensile strength, elongation, bonding strength, heat resistance, and low-temperature flexibility, are similar to those of the commercially available liquid rubber. It can be seen that the addition of the density adjuster does not affect the physical properties of the liquid rubber, and the liquid rubber provided by the embodiment of the present invention can meet the market's performance requirements for liquid rubber.

[0105] The above is a detailed introduction to a liquid rubber for pumping energy storage with excellent storage stability and a preparation method thereof provided by the present invention. Specific examples are used in this article to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for general technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A liquid rubber for pumping water energy storage and having storage stability, characterized in that: include: Density adjustment asphalt 40-70 parts, high molecular polymer emulsion 30-55 parts, dispersant 1-3 parts, defoamer 1-3 parts, stabilizer 0.5-3 parts, UV aging agent 1-3 parts; Wherein, the density-adjusting asphalt comprises modified anionic emulsified asphalt and a density adjuster, and the density adjuster comprises rosin resin and / or coumarone resin, which is used to reduce the density difference between the modified anionic emulsified asphalt and the high molecular polymer emulsion; The density of the modified anionic emulsified asphalt is in the range of 0.99-1.05 g / cm 3 The density of the polymer emulsion is in the range of 1.06-1.18 g / cm 3 The density range of the density adjusting agent is 1.05 to 1.15 g / cm 3 .

2. The liquid rubber according to claim 1, characterized in that The modified anionic emulsified asphalt comprises 30-80 parts of No. 30-70 base asphalt, 0.5-3 parts of modifier, 10-20 parts of solubilizing oil, 2-8 parts of anionic surfactant, 1-5 parts of anionic emulsifier, 40-70 parts of deionized water, 5-10 parts of alkali, and 20-40 parts of inorganic salt; The density adjuster specifically includes 10-25 parts of rosin resin and / or 10-30 parts of coumarone resin.

3. The liquid rubber according to claim 1, characterized in that The high molecular polymer emulsion includes at least one of chloroprene emulsion, styrene-butadiene emulsion, acrylic emulsion, polycarbonate elastic emulsion, silicone rubber emulsion, nitrile emulsion and natural rubber emulsion.

4. The liquid rubber according to claim 1, characterized in that The dispersant comprises at least one of sodium methyl bisnaphthalene sulfonate, sodium methylene bismethyl sulfonate, sodium acrylate acrylamide copolymer, sodium polyacrylate, and sodium cellulose sulfonate; the stabilizer is prepared by compounding disproportionated rosin soap, phosphate dispersant, and water; and the ultraviolet aging agent is hydrophilic 2-(2-hydroxyphenyl)-benzotriazole.

5. The liquid rubber according to claim 2, characterized in that The modifier is at least one of SBR particles, SBS particles, SIS particles, and NBR particles.

6. The liquid rubber according to claim 2, characterized in that The solubilizing oil is at least one of cycloparaffin oil, aromatic oil, white oil and rubber filler oil.

7. The liquid rubber according to claim 2, characterized in that The anionic surfactant is dodecyl diphenyl ether sulfonate and / or naphthyl ditetradecyl disulfonate; the anionic emulsifier is at least one of oleic acid, sodium dodecyl benzene sulfonate and phosphate.

8. The liquid rubber according to claim 2, characterized in that The inorganic salt is at least one of calcium chloride, potassium chloride, sodium chloride, sodium sulfate and potassium sulfate.

9. A method for preparing liquid rubber for pumping water energy storage and having storage stability, characterized in that: The method comprises: 40-70 parts of density adjustment asphalt, 30-55 parts of high molecular polymer emulsion, 1-3 parts of dispersant, 1-3 parts of defoamer, 0.5-3 parts of stabilizer and 1-3 parts of ultraviolet aging agent are mixed at 40-60°C, added into ultrasonic stirring equipment and mixed for 0.5-1.5 hours, and then the temperature is lowered to room temperature to obtain liquid rubber; Wherein, the density-adjusting asphalt comprises modified anionic emulsified asphalt and a density adjuster, and the density adjuster comprises rosin resin and / or coumarone resin, which is used to reduce the density difference between the modified anionic emulsified asphalt and the high molecular polymer emulsion; The density of the modified anionic emulsified asphalt is in the range of 0.99-1.05 g / cm 3 The density of the polymer emulsion is in the range of 1.06-1.18 g / cm 3 The density range of the density adjusting agent is 1.05 to 1.15 g / cm 3 .

10. The method according to claim 9, characterized in that The preparation method of the density-adjusted asphalt is as follows: Mix 10-55 parts of the density adjuster, 30-80 parts of No. 30-70 base asphalt, 0.5-3 parts of the modifier, and 10-20 parts of the solubilizing oil at 170-190° C. until the solid particles are completely dissolved to obtain component A; cool component A to 120-140° C. for standby use; Wherein, the density adjusting agent specifically comprises 10-25 parts of rosin resin and / or 10-30 parts of coumarone resin; Mix 2-8 parts of anionic surfactant, 1-5 parts of anionic emulsifier, 40-70 parts of deionized water, 5-10 parts of alkali, and 20-40 parts of inorganic salt at 50-70° C. until the solid particles are completely dissolved to obtain component B for use; Component A and component B are ground and sheared together in a colloid mill to obtain a density-adjusted asphalt at a temperature of about 85°C.

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