Scale inhibitor, preparation method and application

Abstract

The invention relates to the technical field of scale inhibitors, in particular to a scale inhibitor, a preparation method and application. The scale inhibitor is prepared from the following raw materials in parts by weight: 30 to 35 parts of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer, 6 to 10 parts of polyepoxysuccinic acid, 5 to 8 parts of polyethylene oxide fatty alcohol ether, 5 to 8 parts of sodium dodecyl benzene sulfonate, 4 to 6 parts of nano zinc oxide, 6 to 9 parts of metakaolin hybridization regulated filling agent, 5 to 7 parts of modified nano titanium dioxide agent, 4 to 6 parts of silane coupling agent KH560 and 30 to 35 parts of deionized water. According to the scale inhibitor, raw materials are blended, the scale inhibition effect of calcium carbonate and calcium sulfate ions of a product system is enhanced, the corrosion rate and the antibacterial effect of a product are optimized, the performance coordination balance of the product is excellent, and meanwhile the temperature-resistant stability effect of the product is remarkable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of scale inhibitors, in particular to a scale inhibitor, a preparation method and application. BACKGROUND

[0002] In the industrial production process, the water body such as industrial circulating water and boiler water contains metal ions such as calcium, magnesium, barium and strontium, and anions such as carbonate, sulfate and phosphate. With the increase of water temperature, evaporation and concentration process, these ions are easy to combine to form calcium carbonate, calcium sulfate, calcium phosphate and other scales. The scale adhered to the inner wall of the equipment pipeline can cause the heat transfer efficiency to decrease significantly, increase the energy consumption; at the same time, the scale can also cause pipeline blockage, equipment corrosion and other problems, shorten the service life of the equipment. The existing scale inhibitor has low scale inhibition efficiency, the product has poor scale inhibition effect on calcium carbonate and calcium sulfate ions, in order to optimize the scale inhibition rate, the corrosion rate is easy to be affected and the antibacterial effect is poor, the performance coordination balance of the product is poor, and the temperature stability of the product is not ideal, based on this, the present application is further improved. SUMMARY

[0003] In view of the defects of the prior art, the purpose of the present application is to provide a scale inhibitor, a preparation method and application to solve the problems raised in the background art.

[0004] The technical problem of the present application is solved by the following technical scheme: The present application provides a scale inhibitor, which comprises the following raw materials by weight: Acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer 30-35 parts, polyepoxysuccinic acid 6-10 parts, polyethylene oxide fatty alcohol ether 5-8 parts, sodium dodecyl benzene sulfonate 5-8 parts, nano zinc oxide 4-6 parts, metakaolin hybrid adjusted filler 6-9 parts, modified nano titanium dioxide agent 5-7 parts, silane coupling agent KH560 4-6 parts, deionized water 30-35 parts.

[0005] Preferably, the scale inhibitor comprises the following raw materials by weight: Acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer 32.5 parts, polyepoxysuccinic acid 8 parts, polyethylene oxide fatty alcohol ether 6.5 parts, sodium dodecyl benzene sulfonate 6.5 parts, nano zinc oxide 5 parts, metakaolin hybrid adjusted filler 7.5 parts, modified nano titanium dioxide agent 6 parts, silane coupling agent KH560 5 parts, deionized water 32.5 parts.

[0006] Preferably, the preparation method of the metakaolin hybrid adjusted filler is: S01: uniformly blend 3-5 parts of sodium stearate, 1-2 parts of silane coupling agent KH550 and 5-8 parts of mass fraction 8-12% sodium citrate solution to obtain a sodium stearate solution; S02: The metakaolin is heat treated at 135-145℃ for 1h, then cooled to 55℃ at a rate of 2-5℃ / min, and then soaked. The soaked metakaolin is uniformly stirred in a sodium stearate solution that is 5-8 times the total amount of metakaolin, to obtain a sodium stearate treated metakaolin agent; S03: The sodium stearate treated metakaolin agent and the hybrid modifier are mixed at a weight ratio of (7-11):5, ball milled at a speed of 1000-1500r / min for 2h, filtered and dried to obtain a hybrid modified metakaolin solution; S04: The hybrid modified metakaolin solution and the filling material are further ball milled at a mass ratio of (5-8):3, at a speed of 1250-1350r / min for 2h, filtered and dried to obtain a hybrid modified metakaolin filling agent.

[0007] Preferably, the preparation method of the hybrid modifier is as follows: The 3-5 parts of carbon nanotubes, 2-3 parts of nanosilica, 2-4 parts of hollow glass microbeads, and 5-8 parts of chitosan solution are uniformly blended to obtain a nanosilica solution. The aluminum borate whisker and the nanosilica solution are stirred at a weight ratio of 3:(5-7), filtered and dried to obtain the hybrid modifier.

[0008] Preferably, the mass fraction of the chitosan solution is 3-6%, the stirring speed of the stirring treatment is 350-450r / min, the stirring time is 1h, and the stirring temperature is 50-55℃.

[0009] Preferably, the preparation method of the filling material is as follows: 3-5 parts of nanometer lanthanum oxide, 2-3 parts of boron nitride nanosheet, and 5-8 parts of illite are blended and sintered at a sintering temperature of 520-540℃ for 1h to obtain the filling material.

[0010] Preferably, the preparation method of the modified nanometer titanium dioxide agent is as follows: S01: A silane solution is prepared by blending and mixing silane coupling agent KH560, ethanol, water, and acetic acid at a weight ratio of (3-5):(7-9):2:(0.1-0.2); The nanometer titanium dioxide and the silane solution are ultrasonically treated at a weight ratio of 5:(8-9) for 1h at an ultrasonic power of 350-400W to obtain a silane treated nanometer titanium dioxide solution; S02: The silane treated nanometer titanium dioxide solution and the additive are ball milled at a weight ratio of (7-11):5 at a speed of 1000-1500r / min for 2h, filtered and dried to obtain the modified nanometer titanium dioxide agent; The preparation method of the additive is as follows: S02a: 2-3 parts of silicon carbide, 1-2 parts of nano diatomite and 5-8 parts of sodium silicate solution are uniformly blended to obtain a silicon carbide liquid; S02b: 2-5 parts of beta-cyclodextrin, 6-9 parts of sodium lignosulfonate solution and 2-3 parts of nanocellulose are uniformly blended to obtain a beta-cyclodextrin agent; the beta-cyclodextrin agent and the silicon carbide liquid are fully stirred according to a weight ratio of 3:5, and then are suction filtered and dried to obtain the additive.

[0011] Preferably, the mass fraction of the sodium silicate solution is 5-8%; the mass fraction of the sodium lignosulfonate solution is 5-10%.

[0012] The application further provides a preparation method of the scale inhibitor. The raw materials are weighed according to the weight parts, uniformly stirred, stirred at a stirring speed of 350-400 r / min for 1 h, and then the scale inhibitor of the application is obtained.

[0013] The application further provides an application of the scale inhibitor in water scale inhibition.

[0014] Compared with the prior art, the application has the following beneficial effects: The scale inhibitor of the application adopts acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer as a base raw material, cooperates with polyepoxysuccinic acid, polyethylene oxide fatty alcohol ether, nano zinc oxide and sodium dodecyl benzene sulfonate as a base raw material, simultaneously adds silane coupling agent KH560 as an interface raw material additive, and through the coordination and compatibility of the raw materials, the calcium carbonate and calcium sulfate ion scale inhibition effect of the product system is enhanced, the corrosion rate and the bacteriostatic effect of the product are optimized, the performance coordination balance of the product is excellent, and the temperature resistance stability effect of the product is remarkable. The metakaolin hybrid adjusting filler adopts metakaolin which is heat improved to optimize the activity performance, and is further compounded with sodium stearate, silane coupling agent KH550 and sodium citrate for treatment, can reduce the surface energy of the metakaolin, enhance the compatibility with other organic components (such as acrylic acid copolymer and polyepoxysuccinic acid) in the scale inhibitor system, avoid agglomeration, and at the same time, the provided medium system facilitates the better mutual cooperation and compatibility of the hybrid adjusting agent and the filler in the system, optimizes the performance effect of the product, the hybrid adjusting agent adopts carbon nanotube, nano silicon dioxide and aluminum borate whisker to form a multi-dimensional nano structure, can capture the scale forming ions in water through physical adsorption and charge effect, forms a synergistic effect with the chelating components in the scale inhibitor, enhances the scale inhibition efficiency of calcium carbonate and calcium sulfate, the introduction of hollow glass microspheres increases the specific surface area of the filler, enhances the adsorption and dispersion capacity of the micro scale particles, prevents the scale particles from gathering and growing, and through the provided multi-dimensional nano structure, the hollow glass microspheres can support and protect the metal body, reduce the corrosion of the product to the metal body, and have a corrosion inhibition effect. The nano lanthanum oxide, boron nitride nanosheet and illite in the filling agent are sintered to form a high-temperature-resistant rigid skeleton structure, thereby improving the stability of the product in high-temperature water, the sheet structure of the boron nitride nanosheet can be filled in the product system, thereby further optimizing the performance effect of the product and enhancing the protection of the product system on the metal body, reducing the corrosion of the product on the metal body, playing a corrosion inhibition effect, and the chitosan solution has antibacterial properties, which is combined into the system to further enhance the antibacterial properties of the product; The modification treatment of the silane coupling agent KH560 introduces organic functional groups on the surface of the nano titanium dioxide, reduces the surface energy, and the mixed system of ethanol and water can adjust the polarity, cooperate with the high-frequency vibration generated by the ultrasonic treatment, effectively break the agglomeration of the nanoparticles, and significantly improve the dispersion uniformity of the nanoparticles in the scale inhibitor system. The compatibility of the nano titanium dioxide treated by silane with the organic macromolecules in the scale inhibitor is significantly improved, ensuring that each component plays a synergistic role. The silicon carbide and nano diatomite in the additive have abundant pore structure and large specific surface area, can capture scale-forming ions in water through physical adsorption, form a "adsorption-dispersion" synergistic effect with the nano titanium dioxide, enhance the inhibition ability on scale crystals, the cavity structure and amphiphilic structure of the β-cyclodextrin enhance the performance coordination of the product system, the performance effect of the product is improved through the mutual cooperation of raw materials; and the silicon-oxygen bond formed in the treatment process of the sodium silicate solution can enhance the bonding strength of the additive and the nano titanium dioxide, thereby optimizing and improving the compatibility effect of the modified nano titanium dioxide agent and the system, optimizing the high-temperature stability of the product, and coordinating and improving the calcium carbonate and calcium sulfate ion scale inhibition effect of the product, the corrosion rate and antibacterial effect of the product, and the performance coordination balance of the product is further improved. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0016] The scale inhibitor in the embodiment includes the following raw materials by weight: Acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer 30-35 parts, polyepoxysuccinic acid 6-10 parts, polyethylene oxide fatty alcohol ether 5-8 parts, sodium dodecyl benzene sulfonate 5-8 parts, nano zinc oxide 4-6 parts, illite hybrid adjusted filling agent 6-9 parts, modified nano titanium dioxide agent 5-7 parts, silane coupling agent KH560 4-6 parts, deionized water 30-35 parts.

[0017] The scale inhibitor of the embodiment comprises the following raw materials by weight: Acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer 32.5 parts, polyepoxysuccinic acid 8 parts, polyethylene oxide fatty alcohol ether 6.5 parts, sodium dodecyl benzene sulfonate 6.5 parts, nano zinc oxide 5 parts, metakaolin hybrid adjusted filler 7.5 parts, modified nano titanium dioxide agent 6 parts, silane coupling agent KH560 5 parts, and deionized water 32.5 parts.

[0018] The preparation method of the metakaolin hybrid adjusted filler of the embodiment is as follows: S01: uniformly blend 3-5 parts of sodium stearate, 1-2 parts of silane coupling agent KH550, and 5-8 parts of a mass fraction of 8-12% sodium citrate solution to obtain a sodium stearate solution; S02: metakaolin is first heat treated at 135-145°C for 1h, then cooled to 55°C at a rate of 2-5°C / min, and then incubated, and then the incubated metakaolin is uniformly stirred in the sodium stearate solution at 5-8 times the total amount of metakaolin to obtain sodium stearate treated metakaolin agent; S03: uniformly mix and ball mill the sodium stearate treated metakaolin agent and the hybrid adjusting agent at a weight ratio of (7-11):5, the ball milling speed is 1000-1500r / min, the ball milling time is 2h, after the ball milling is completed, the mixture is filtered and dried to obtain a hybrid adjusted metakaolin solution; S04: continue ball milling the hybrid adjusted metakaolin solution and the filler at a mass ratio of (5-8):3, the ball milling speed is 1250-1350r / min, the ball milling time is 2h, after the ball milling is completed, the mixture is filtered and dried to obtain the metakaolin hybrid adjusted filler.

[0019] The preparation method of the hybrid adjusting agent of the embodiment is as follows: uniformly blend 3-5 parts of carbon nanotubes, 2-3 parts of nano silicon dioxide, 2-4 parts of hollow glass microbeads, and 5-8 parts of a chitosan solution to obtain a nano silicon dioxide solution; uniformly stir the aluminum borate whisker and the nano silicon dioxide solution at a weight ratio of 3:(5-7), after the stirring is completed, the mixture is filtered and dried to obtain the hybrid adjusting agent.

[0020] The mass fraction of the chitosan solution of the embodiment is 3-6%; the stirring speed of the stirring treatment is 350-450r / min, the stirring time is 1h, and the stirring temperature is 50-55°C.

[0021] The preparation method of the filler of the embodiment is as follows: uniformly blend 3-5 parts of nano lanthanum oxide, 2-3 parts of boron nitride nanosheet, and 5-8 parts of illite, and then sintering treatment is performed, the sintering temperature is 520-540°C, the sintering time is 1h, and after the sintering is completed, the filler is obtained.

[0022] The preparation method of the modified nano titanium dioxide agent of the embodiment is as follows: S01: blend silane coupling agent KH560, ethanol and water, and acetic acid according to the weight ratio (3-5):(7-9):2:(0.1-0.2) to prepare a silane solution; Ultrasonic treatment of nano-titanium dioxide and the silane solution according to the weight ratio 5:(8-9) at an ultrasonic power of 350-400 W for 1 h, and after the ultrasonic treatment, a nano-titanium dioxide solution treated with silane is obtained; S02: ball milling of the nano-titanium dioxide solution treated with silane and an additive according to the weight ratio (7-11):5 at a ball milling speed of 1000-1500 r / min for 2 h, and after the ball milling, filtration and drying to obtain a modified nano-titanium dioxide agent; The additive is prepared by the following method: S02a: blending 2-3 parts of silicon carbide, 1-2 parts of nano diatomite, and 5-8 parts of a sodium silicate solution to obtain a silicon carbide solution; S02b: blending 2-5 parts of β-cyclodextrin, 6-9 parts of a sodium lignosulfonate solution, and 2-3 parts of nano cellulose to obtain a β-cyclodextrin agent; stirring the β-cyclodextrin agent and the silicon carbide solution according to the weight ratio 3:5, and then performing filtration and drying to obtain the additive.

[0023] The sodium silicate solution has a mass fraction of 5-8%; and the sodium lignosulfonate solution has a mass fraction of 5-10%.

[0024] The preparation method of the scale inhibitor of the embodiment includes the following steps: The raw materials are weighed according to the weight parts, and the raw materials are stirred uniformly at a stirring speed of 350-400 r / min for 1 h, and after the stirring, the scale inhibitor of the embodiment is obtained.

[0025] The scale inhibitor of the embodiment is applied in water scale inhibition.

[0026] Embodiment 1

[0027] The scale inhibitor of the embodiment includes the following raw materials by weight: Acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer 30 parts, polyepoxysuccinic acid 6 parts, polyethylene oxide fatty alcohol ether 5 parts, sodium dodecyl benzene sulfonate 5 parts, nano zinc oxide 4 parts, metakaolin hybrid adjusted filler 6 parts, modified nano titanium dioxide agent 5 parts, silane coupling agent KH560 4 parts, and deionized water 30 parts.

[0028] The preparation method of the metakaolin hybrid adjusted filler of the embodiment is as follows: S01: blending 3 parts of sodium stearate, 1 part of silane coupling agent KH550, and 5 parts of a mass fraction 8% sodium citrate solution to obtain a sodium stearate solution; S02: The metakaolin is heat treated at 135℃ for 1h, then cooled to 55℃ at a rate of 2℃ / min, and then kept at 55℃. The metakaolin is then stirred in a solution of sodium stearate with a concentration of 5 times the total amount of metakaolin to obtain a sodium stearate treated metakaolin agent; S03: The sodium stearate treated metakaolin agent and the hybrid modifier are mixed at a weight ratio of 7:5, ball milled at a speed of 1000r / min for 2h, then filtered and dried to obtain a hybrid modified metakaolin solution; S04: The hybrid modified metakaolin solution and the filler are further ball milled at a mass ratio of 5:3, at a speed of 1250r / min for 2h, then filtered and dried to obtain a hybrid modified metakaolin filler.

[0029] The preparation method of the hybrid modifier of the embodiment is as follows: The 3 parts of carbon nanotubes, 2 parts of nanosilica, 2 parts of hollow glass microspheres and 5 parts of chitosan solution are uniformly blended to obtain a nanosilica solution. The aluminum borate whisker and the nanosilica solution are stirred at a weight ratio of 3:5, then filtered and dried to obtain the hybrid modifier.

[0030] The mass fraction of the chitosan solution of the embodiment is 3%. The stirring speed of the stirring treatment is 350r / min, the stirring time is 1h, and the stirring temperature is 50℃.

[0031] The preparation method of the filler of the embodiment is as follows: 3 parts of nanometer lanthanum oxide, 2 parts of boron nitride nanosheet and 5 parts of illite are blended and sintered at a sintering temperature of 520℃ for 1h to obtain the filler.

[0032] The preparation method of the modified nanometer titanium dioxide agent of the embodiment is as follows: S01: The silane coupling agent KH560, ethanol, water and acetic acid are blended at a weight ratio of 3:7:2:0.1 to prepare a silane solution; The nanometer titanium dioxide and the silane solution are ultrasonically treated at a weight ratio of 5:8, at an ultrasonic power of 350W for 1h to obtain a silane treated nanometer titanium dioxide solution. S02: The silane treated nanometer titanium dioxide solution and the additive are ball milled at a weight ratio of 7:5, at a speed of 1000r / min for 2h, then filtered and dried to obtain a modified nanometer titanium dioxide agent. The preparation method of the additive is as follows: S02a: The 2 parts of silicon carbide, 1 part of nanosilica and 5 parts of sodium silicate solution are uniformly blended to obtain a silicon carbide solution. S02b: 2 parts of beta-cyclodextrin, 6 parts of sodium lignosulfonate solution and 2 parts of nanocellulose are uniformly blended to obtain a beta-cyclodextrin agent; the beta-cyclodextrin agent and the silicon carbide liquid are stirred fully according to a weight ratio of 3:5, and then are extracted, dried to obtain the additive.

[0033] The mass fraction of the sodium silicate solution of the embodiment is 5%; the mass fraction of the sodium lignosulfonate solution is 5%.

[0034] The preparation method of the scale inhibitor of the embodiment comprises the following steps: The raw materials are weighed according to the weight parts, and are stirred and uniformly mixed, the stirring speed is 350 r / min, and the stirring is performed for 1 h; after the stirring is completed, the scale inhibitor of the embodiment is obtained.

[0035] The application of the scale inhibitor of the embodiment in water scale inhibition.

[0036] Embodiment 2

[0037] The scale inhibitor of the embodiment comprises the following raw materials in weight parts: 35 parts of acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer, 10 parts of polyepoxysuccinic acid, 8 parts of polyethylene glycol fatty alcohol ether, 8 parts of sodium dodecyl benzene sulfonate, 6 parts of nanometer zinc oxide, 9 parts of metakaolin hybrid adjusted filler, 7 parts of modified nanometer titanium dioxide agent, 6 parts of silane coupling agent KH560 and 35 parts of deionized water.

[0038] The scale inhibitor of the embodiment comprises the following raw materials in weight parts: The preparation method of the metakaolin hybrid adjusted filler of the embodiment is as follows: S01: 5 parts of sodium stearate, 2 parts of silane coupling agent KH550 and 8 parts of 12% mass fraction sodium citrate solution are uniformly blended to obtain a sodium stearate liquid; S02: the metakaolin is first heat treated at 145 DEG C for 1 h, and then is cooled to 55 DEG C at a rate of 5 DEG C / min, and is kept, and then the kept metakaolin is uniformly stirred in 8 times the total amount of the metakaolin of the sodium stearate liquid to obtain metakaolin treated with sodium stearate; S03: the metakaolin treated with sodium stearate and the hybrid adjusting agent are uniformly mixed and ball milled according to a weight ratio of 11:5, the ball milling speed is 1500 r / min, the ball milling is performed for 2 h, after the ball milling is completed, extraction, drying are performed to obtain a hybrid adjusted metakaolin liquid; S04: the hybrid adjusted metakaolin liquid and the filler are further ball milled according to a mass ratio of 8:3, the ball milling speed is 1350 r / min, the ball milling is performed for 2 h, after the ball milling is completed, extraction, drying are performed to obtain the metakaolin hybrid adjusted filler.

[0039] The preparation method of the hybrid adjusting agent of the embodiment is as follows: 5 parts of carbon nanotubes, 3 parts of nanometer silicon dioxide, 4 parts of hollow glass microspheres and 8 parts of chitosan solution are uniformly blended to obtain a nanometer silicon dioxide liquid; aluminum borate whiskers and the nanometer silicon dioxide liquid are stirred and treated according to a weight ratio of 3:7, after stirring is completed, filtration and drying are performed to obtain a hybrid modifier.

[0040] The mass fraction of the chitosan solution in this embodiment is 6%; the stirring speed of the stirring treatment is 450 r / min, the stirring time is 1 h, and the stirring temperature is 55℃.

[0041] The preparation method of the filler in this embodiment is as follows: 5 parts of nanometer lanthanum oxide, 3 parts of boron nitride nanosheet and 8 parts of illite are blended and sintered, the sintering temperature is 540℃, the sintering time is 1 h, and after sintering is completed, a filler is obtained.

[0042] The preparation method of the modified nanometer titanium dioxide agent in this embodiment is as follows: S01: a silane coupling agent KH560, ethanol, water and acetic acid are blended and matched according to a weight ratio of 5:9:2:0.2 to prepare a silane liquid; The nanometer titanium dioxide and the silane liquid are ultrasonically treated according to a weight ratio of 5:9, the ultrasonic power is 400 W, the ultrasonic time is 1 h, and after ultrasonic treatment is completed, a silane-treated nanometer titanium dioxide liquid is obtained; S02: the silane-treated nanometer titanium dioxide liquid and an additive are ball milled according to a weight ratio of 11:5, the ball milling speed is 1500 r / min, the ball milling time is 2 h, after ball milling is completed, filtration and drying are performed to obtain a modified nanometer titanium dioxide agent; The preparation method of the additive is as follows: S02a: 3 parts of silicon carbide, 2 parts of nanometer diatomite and 8 parts of sodium silicate solution are uniformly blended to obtain a silicon carbide liquid; S02b: 5 parts of beta-cyclodextrin, 9 parts of sodium lignosulfonate solution and 3 parts of nanometer cellulose are uniformly blended to obtain a beta-cyclodextrin agent; the beta-cyclodextrin agent and the silicon carbide liquid are fully stirred according to a weight ratio of 3:5, and then filtration and drying are performed to obtain an additive.

[0043] The mass fraction of the sodium silicate solution in this embodiment is 8%; the mass fraction of the sodium lignosulfonate solution is 10%.

[0044] The preparation method of the scale inhibitor in this embodiment includes the following steps: The raw materials are weighed according to weight parts, uniformly stirred and mixed, the stirring speed is 400 r / min, the stirring time is 1 h, and after stirring is completed, a scale inhibitor of the present application is obtained.

[0045] The scale inhibitor in this embodiment is applied in water scale inhibition.

[0046] Example 3

[0047] The scale inhibitor of the embodiment comprises the following raw materials in parts by weight: Acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer 32.5 parts, polyepoxysuccinic acid 8 parts, polyethylene oxide fatty alcohol ether 6.5 parts, sodium dodecyl benzene sulfonate 6.5 parts, nano zinc oxide 5 parts, metakaolin hybrid adjusted filler 7.5 parts, modified nano titanium dioxide agent 6 parts, silane coupling agent KH560 5 parts, deionized water 32.5 parts.

[0048] The preparation method of the metakaolin hybrid adjusted filler of the embodiment is as follows: S01: uniformly blend 4 parts of sodium stearate, 1.5 parts of silane coupling agent KH550, and 6.5 parts of a 10% mass fraction sodium citrate solution to obtain a sodium stearate solution; S02: metakaolin is first heat treated at 140℃ for 1h, then cooled to 55℃ at a rate of 3.5℃ / min, and then incubated. The incubated metakaolin is uniformly stirred in the sodium stearate solution at 6.5 times the total amount of metakaolin to obtain sodium stearate treated metakaolin agent; S03: uniformly mix and ball mill the sodium stearate treated metakaolin agent and the hybrid adjusting agent at a weight ratio of 9:5, the ball mill rotation speed is 1250r / min, and the ball milling time is 2h. After the ball milling is completed, the mixture is extracted and dried to obtain a hybrid adjusted metakaolin solution; S04: continue ball milling the hybrid adjusted metakaolin solution and the filler at a mass ratio of 6.5:3, the ball mill rotation speed is 1300r / min, and the ball milling time is 2h. After the ball milling is completed, the mixture is extracted and dried to obtain the metakaolin hybrid adjusted filler.

[0049] The preparation method of the hybrid adjusting agent of the embodiment is as follows: Uniformly blend 4 parts of carbon nanotubes, 2.5 parts of nano silicon dioxide, 3 parts of hollow glass microbeads, and 6.5 parts of a chitosan solution to obtain a nano silicon dioxide solution. Stir the aluminum borate whisker and the nano silicon dioxide solution at a weight ratio of 3:6, extract and dry the mixture after the stirring is completed to obtain the hybrid adjusting agent.

[0050] The mass fraction of the chitosan solution of the embodiment is 4.5%. The stirring rotation speed of the stirring treatment is 400r / min, the stirring time is 1h, and the stirring temperature is 52.5℃.

[0051] The preparation method of the filler of the embodiment is as follows: uniformly blend 4 parts of nano lanthanum oxide, 2.5 parts of boron nitride nanosheet, and 6.5 parts of illite, and then sinter the mixture at a sintering temperature of 530℃ for 1h to obtain the filler.

[0052] The preparation method of the modified nano titanium dioxide agent of the embodiment is as follows: S01: the silane coupling agent KH560, ethanol and water and acetic acid are blended according to the weight ratio of 4:8:2:0.15 to prepare a silane solution; The nanometer titanium dioxide and the silane solution are ultrasonically treated according to the weight ratio of 5:8.5, the ultrasonic power is 375W, the ultrasonic treatment is performed for 1h, and after the ultrasonic treatment, a nanometer titanium dioxide solution treated by silane is obtained; S02: the nanometer titanium dioxide solution treated by silane and the additive are ball milled according to the weight ratio of 9:5, the ball milling speed is 1250r / min, the ball milling is performed for 2h, after the ball milling, filtration and drying are performed, and a modified nanometer titanium dioxide agent is obtained. The additive is prepared by the following method: S02a: 2.5 parts of silicon carbide, 1.5 parts of nanometer diatomite and 6.5 parts of a sodium silicate solution are uniformly blended to obtain a silicon carbide solution; S02b: 3.5 parts of β-cyclodextrin, 7.5 parts of a sodium lignosulfonate solution and 2.5 parts of nanometer cellulose are uniformly blended to obtain a β-cyclodextrin agent; the β-cyclodextrin agent and the silicon carbide solution are fully stirred according to the weight ratio of 3:5, then filtration and drying are performed, and the additive is obtained.

[0053] The mass fraction of the sodium silicate solution in this embodiment is 6.5%; and the mass fraction of the sodium lignosulfonate solution is 7.5%.

[0054] The preparation method of the scale inhibitor in this embodiment comprises the following steps: The raw materials are weighed according to the weight parts, the raw materials are uniformly stirred, the stirring speed is 370r / min, the stirring is performed for 1h, and after the stirring, the scale inhibitor in this embodiment is obtained.

[0055] The scale inhibitor in this embodiment is applied in water scale inhibition.

[0056] Comparative Example 1

[0057] Different from Example 3, no metakaolin hybrid adjusting filler is added.

[0058] Comparative Example 2

[0059] Different from Example 3, no hybrid adjusting agent is added in the preparation of the metakaolin hybrid adjusting filler.

[0060] Comparative Example 3

[0061] Different from Example 3, no nanometer silicon dioxide solution is added in the preparation of the hybrid adjusting agent.

[0062] Comparative Example 4

[0063] Different from Example 3, no carbon nanotube and nanometer silicon dioxide are added in the preparation of the nanometer silicon dioxide solution.

[0064] Comparative Example 5

[0065] The difference between Example 3 is that the nano lanthanum oxide, boron nitride nanosheet is not added in the filler material.

[0066] Comparative Example 6

[0067] The difference between Example 3 is that the nano lanthanum oxide, boron nitride nanosheet is not added in the filler material.

[0068] Comparative Example 7

[0069] The difference between Example 3 is that the sodium stearate treated metakaolin agent is not added in the preparation of the metakaolin hybrid adjusted filler.

[0070] Comparative Example 8

[0071] The difference between Example 3 is that the sodium stearate treated metakaolin agent is not added in the preparation of the metakaolin hybrid adjusted filler.

[0072] Comparative Example 9

[0073] The difference between Example 3 is that the modified nano titanium dioxide agent is not added.

[0074] Comparative Example 10

[0075] The difference between Example 3 is that the modified nano titanium dioxide agent is not added.

[0076] Comparative Example 11

[0077] The difference between Example 3 is that the modified nano titanium dioxide agent is not added.

[0078] Comparative Example 12

[0079] The difference between Example 3 is that the modified nano titanium dioxide agent is not added.

[0080] The performance of the products of Examples 1-3 and Comparative Examples 1-12 was tested, the calcium carbonate and calcium sulfate ion scale inhibition was tested, and the corrosion rate (corrosion rate: refer to GBT18175-2000) “Determination of Inhibition Performance of Water Treatment Agent by Rotary Hanging Piece Method” was tested, the static inhibition performance of the mixed corrosion and scale inhibitor sample was tested, and the bacteriostatic effect was tested, and the temperature resistance stability of the product was tested (the product was placed at 65°C for 24h, and the temperature resistance stability of the product was tested after being treated at 85°C for 24h), and the test results are shown in Tables 1 and 2. Table 1

[0081] Table 2

[0082]

[0083] As can be seen from the comparative examples 1-12 and the examples 1-3; The product of example 3 has excellent calcium carbonate and calcium sulfate ion scale inhibition, as well as corrosion inhibition and antibacterial properties, and the product has excellent stability in a temperature-resistant environment at 65 DEG C and 85 DEG C; As can be seen from the comparative examples 1-12 and example 3, the performance of the product has a deteriorating trend when one of the metakaolin hybridization adjusting filler and the modified nanometer titanium dioxide agent is not added, and the performance stability of the product deteriorates significantly at 65 DEG C and 85 DEG C. The performance of the product is most significant when the metakaolin hybridization adjusting filler and the modified nanometer titanium dioxide agent are both used. When the hybridization adjusting agent is not added in the preparation of the metakaolin hybridization adjusting filler, the nanometer silicon dioxide liquid is not added in the preparation of the hybridization adjusting agent, the carbon nanotube and the nanometer silicon dioxide are not added in the preparation of the nanometer silicon dioxide liquid, the filler is not added in the preparation of the metakaolin hybridization adjusting filler, the nanometer lanthanum oxide and the boron nitride nanosheet are not added in the filler, the sodium stearate treated metakaolin agent is not added in the preparation of the metakaolin hybridization adjusting filler, and the heat-preserved metakaolin is not added in the preparation of the sodium stearate treated metakaolin agent, the performance of the product has a deteriorating trend to different degrees. The performance of the product is most significant when the hybridization adjusting agent, the filler and the sodium stearate treated metakaolin agent are prepared by the specific method. When the filler is not added in the preparation of the metakaolin hybridization adjusting filler, the temperature-resistant stability of the product deteriorates significantly. The addition of the filler has a significant improvement effect on the temperature-resistant stability of the product. When the additive is not added in the preparation of the modified nanometer titanium dioxide agent, the silane treated nanometer titanium dioxide liquid is not added in the preparation of the modified nanometer titanium dioxide agent, and the nanometer titanium dioxide is not added in the preparation of the silane treated nanometer titanium dioxide liquid, the performance of the product has a deteriorating trend to different degrees. The performance of the product deteriorates significantly when the additive is not added.

[0084] Based on the significant change of the performance of the product caused by the additive, further research is conducted. The preparation method of the additive is as follows: S02a: 2.5 parts of silicon carbide, 1.5 parts of nanometer diatomite and 6.5 parts of sodium silicate solution are uniformly blended to obtain a silicon carbide liquid; S02b: 3.5 parts of beta-cyclodextrin, 7.5 parts of sodium lignosulfonate solution and 2.5 parts of nanometer cellulose are uniformly blended to obtain a beta-cyclodextrin agent. The beta-cyclodextrin agent and the silicon carbide liquid are fully stirred at a weight ratio of 3:5, and then are filtered and dried to obtain the additive.

[0085] Experimental example 1

[0086] The same as example 3, except that no β-cyclodextrin and nanocellulose are added in the preparation of the β-cyclodextrin agent.

[0087] Experimental Example 2

[0088] The same as example 3, except that no β-cyclodextrin and nanocellulose are added in the preparation of the β-cyclodextrin agent.

[0089] Experimental Example 3

[0090] The same as example 3, except that no silicon carbide liquid is added in the preparation of the additive.

[0091] Experimental Example 4

[0092] The same as example 3, except that no silicon carbide and nanoclay are added in the silicon carbide liquid.

[0093] Experimental Example 5

[0094] The same as example 3, except that water is used instead of sodium silicate solution.

[0095] The product performance of experimental examples 1-5 is tested as follows:

[0096] As can be seen from experimental examples 1-5, when no silicon carbide liquid is added in the preparation of the additive, no β-cyclodextrin agent is added in the preparation of the additive, no β-cyclodextrin and nanocellulose are added in the preparation of the β-cyclodextrin agent, no silicon carbide and nanoclay are added in the silicon carbide liquid, and water is used instead of sodium silicate solution, the performance of the product has a relatively obvious deteriorating trend. Only when the specific silicon carbide liquid is used in combination with the β-cyclodextrin agent, the performance of the product is the most significant, and the effect is more significant than that of other methods.

[0097] It is apparent for those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, and the scope of the present application should be defined by the appended claims rather than the above description, and it is intended to embrace all changes falling within the meaning and range of equivalents of the claims.

[0098] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. An antifouling agent, characterized by, The scale inhibitor comprises the following raw materials by weight: Acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer 32.5 parts, polyepoxysuccinic acid 8 parts, polyethylene oxide fatty alcohol ether 6.5 parts, sodium dodecyl benzene sulfonate 6.5 parts, nano zinc oxide 5 parts, metakaolin hybrid adjusted filler 7.5 parts, modified nano titanium dioxide agent 6 parts, silane coupling agent KH560 5 parts and deionized water 32.5 parts.

2. The scale inhibitor of claim 1, wherein, The scale inhibitor comprises the following raw materials by weight: Acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer 32.5 parts, polyepoxysuccinic acid 8 parts, polyethylene oxide fatty alcohol ether 6.5 parts, sodium dodecyl benzene sulfonate 6.5 parts, nano zinc oxide 5 parts, metakaolin hybrid adjusted filler 7.5 parts, modified nano titanium dioxide agent 6 parts, silane coupling agent KH560 5 parts and deionized water 32.5 parts.

3. The scale inhibitor of claim 1, wherein The preparation method of the metakaolin hybrid adjusted filler is: S01: uniformly blend 3-5 parts of sodium stearate, 1-2 parts of silane coupling agent KH550 and 5-8 parts of mass fraction 8-12% sodium citrate solution to obtain a sodium stearate solution; S02: metakaolin is first heat treated at 135-145℃ for 1h, then cooled to 55℃ at a rate of 2-5℃ / min, and then the metakaolin is stirred in the sodium stearate solution at 5-8 times the total amount of metakaolin to obtain metakaolin treated with sodium stearate; S03: uniformly mix and ball mill the metakaolin treated with sodium stearate and the hybrid modifier at a weight ratio of (7-11):5, the ball milling speed is 1000-1500r / min, the ball milling time is 2h, after the ball milling is completed, the mixture is filtered and dried to obtain the metakaolin hybrid solution; S04: continue ball milling the metakaolin hybrid solution and the filler at a mass ratio of (5-8):3, the ball milling speed is 1250-1350r / min, the ball milling time is 2h, after the ball milling is completed, the mixture is filtered and dried to obtain the metakaolin hybrid adjusted filler.

4. The scale inhibitor of claim 3, wherein, The preparation method of the hybrid modifier is: uniformly blend 3-5 parts of carbon nanotubes, 2-3 parts of nano silicon dioxide, 2-4 parts of hollow glass microspheres and 5-8 parts of chitosan solution to obtain a nano silicon dioxide solution; stir the aluminum borate whisker and the nano silicon dioxide solution at a weight ratio of 3:(5-7), after the stirring is completed, the mixture is filtered and dried to obtain the hybrid modifier.

5. The scale inhibitor of claim 4, wherein The mass fraction of the chitosan solution is 3-6%; the stirring speed of the stirring treatment is 350-450r / min, the stirring time is 1h, and the stirring temperature is 50-55℃.

6. The scale inhibitor of claim 4, wherein The preparation method of the filler is: blend and sinter 3-5 parts of nano lanthanum oxide, 2-3 parts of boron nitride nanosheet and 5-8 parts of illite at a sintering temperature of 520-540℃ for 1h, after the sintering is completed, the filler is obtained.

7. The scale inhibitor of claim 1, wherein The preparation method of the modified nano titanium dioxide agent is: S01: uniformly blend silane coupling agent KH560, ethanol, water and acetic acid at a weight ratio of (3-5):(7-9):2:(0.1-0.2) to prepare a silane solution; Nano titanium dioxide, silane liquid is according to weight ratio 5: (8-9) ultrasonic treatment, ultrasonic power is 350-400W, ultrasonic 1h, ultrasonic end, obtain silane treated nano titanium dioxide liquid; S02: Silane treated nano titanium dioxide liquid, additive is according to weight ratio (7-11): 5 ball milling treatment, ball milling speed 1000-1500rmin, ball milling 2h, ball milling end, suction filtration, dry, obtain modified nano titanium dioxide agent; The additive is prepared by the following method: S02a: 2-3 parts of silicon carbide, 1-2 parts of nano diatomite and 5-8 parts of sodium silicate solution are uniformly blended to obtain a silicon carbide liquid; S02b: 2-5 parts of β-cyclodextrin, 6-9 parts of sodium lignosulfonate solution and 2-3 parts of nano cellulose are uniformly blended to obtain a β-cyclodextrin agent; the β-cyclodextrin agent and the silicon carbide liquid are fully stirred according to a weight ratio of 3:5, and then suction filtration and drying are performed to obtain the additive.

8. The scale inhibitor of claim 7, wherein, The mass fraction of the sodium silicate solution is 5-8%; the mass fraction of the sodium lignosulfonate solution is 5-10%.

9. A method for preparing a scale inhibitor according to any one of claims 1 to 8, characterized in that, The method comprises the following steps: The raw materials are weighed according to weight parts, and the raw materials are uniformly stirred, the stirring speed is 350-400r / min, and the stirring is carried out for 1h, and then the anti-scaling agent of the application is obtained.

10. The use of the anti-scaling agent according to any one of claims 1-8 in water scale inhibition.

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