CN114907749A - Material for preventing natural gas gasifier from frosting and freezing and preparation method thereof - Google Patents

Material for preventing natural gas gasifier from frosting and freezing and preparation method thereof Download PDF

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Publication number
CN114907749A
CN114907749A CN202210634865.8A CN202210634865A CN114907749A CN 114907749 A CN114907749 A CN 114907749A CN 202210634865 A CN202210634865 A CN 202210634865A CN 114907749 A CN114907749 A CN 114907749A
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parts
stirring
hydrophobic
natural gas
preventing
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许家庆
王俊文
黄玉昌
刘仁青
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Guangzhou Zhongqiao Energy Technology Co ltd
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Guangzhou Zhongqiao Energy Technology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • C09D7/62Additives non-macromolecular inorganic modified by treatment with other compounds
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2227Oxides; Hydroxides of metals of aluminium
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
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Abstract

The invention discloses a material for preventing a natural gas gasifier from frosting and icing, which comprises the following raw materials in parts by weight: 35-45 parts of bisphenol A epoxy resin, 25-35 parts of solvent, 10-15 parts of polysiloxane, 5-10 parts of hydrophobic modified nanoparticles, 3-7 parts of hydrophobic stabilizer, 1-4 parts of dispersant and 10-15 parts of curing agent. The material for preventing frosting and icing adopts bisphenol A epoxy resin to be matched with polysiloxane, hydrophobic modified nanoparticles, hydrophobic stabilizer, dispersant and curing agent, and the material has excellent hydrophobic and anti-icing performances, and meanwhile, the product is easier to remove after being frozen, has high deicing efficiency and has wide market effect.

Description

Material for preventing natural gas gasifier from frosting and freezing and preparation method thereof
Technical Field
The invention relates to the technical field of gasifier frosting and icing materials, in particular to a material for preventing a natural gas gasifier from frosting and icing and a preparation method thereof.
Background
The natural gas refers to a combustible gas existing in nature, and is a fossil fuel, including gases formed by various natural processes in an atmospheric space, a water space and a rock space (including oil field gas, gas field gas, mud volcanic gas, coal bed gas, biogenetic gas and the like); the gasifier is an industrial and civil energy-saving device and is used for converting liquid gas into gaseous gas. Many gases are involved, for example: liquid oxygen, liquid nitrogen, liquid argon, LCO2, and the like.
The invention provides a material for preventing a natural gas gasifier from frosting and icing and a preparation method thereof based on the fact that the surface of the existing gasifier is easy to freeze and frost to influence the normal use of the existing gasifier, and the surface is difficult to de-ice after freezing and the structure of a device is easy to damage.
Disclosure of Invention
In view of the defects of the prior art, the present invention aims to provide a material for preventing the natural gas gasifier from frosting and icing and a preparation method thereof, so as to solve the problems in the background art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention provides a material for preventing a natural gas gasifier from frosting and icing, which comprises the following raw materials in parts by weight:
35-45 parts of bisphenol A epoxy resin, 25-35 parts of solvent, 10-15 parts of polysiloxane, 5-10 parts of hydrophobic modified nanoparticles, 3-7 parts of hydrophobic stabilizer, 1-4 parts of dispersant and 10-15 parts of curing agent.
Preferably, the material for preventing the natural gas gasifier from frosting and icing comprises the following raw materials in parts by weight:
40 parts of bisphenol A type epoxy resin, 30 parts of solvent, 12.5 parts of polysiloxane, 7.5 parts of hydrophobic modified nano powder, 5 parts of hydrophobic stabilizer, 2.5 parts of dispersant and 12.5 parts of curing agent.
Preferably, the modification method of the hydrophobically modified nanoparticle is as follows:
s101: adding 20-30 parts of boehmite nano powder into 45-55 parts of hydrochloric acid aqueous solution with the mass fraction of 5%, stirring and fully dispersing, adding 5-10 parts of sodium monododecyl itaconate propyl sulfonate, continuously stirring fully, washing with water, and drying to obtain pretreated boehmite;
s102: blending 5-10 parts of graphene and 10-20 parts of ethanol to form a blending agent, then adding 2-5 parts of hexadecyl trimethoxy silane and 1-4 parts of perfluoro caprylic acid, and stirring and mixing fully to obtain a modified solution;
s103: fully stirring and mixing the pretreated boehmite and the modification liquid according to the weight ratio of 1:5, stirring for 30-40min at the temperature of 75-85 ℃, wherein the stirring speed is 450-550r/min, and finishing stirring to obtain the graphene composite modified boehmite;
s104: and adding the graphene composite modified boehmite into 3-5 times of hydrophobic liquid, stirring and mixing fully, washing and drying to obtain the hydrophobic modified nanoparticles.
The inventor of the invention finds that the hydrophobic modified nano powder is replaced by nano silicon dioxide, so that the contact angle and the ice layer shear strength of the product are obviously improved, the hydrophobic property of the product is obviously deteriorated, the effect of the ice layer shear strength is deteriorated, and the product is difficult to deice, so that the deicing working strength is high, and the use of the product is influenced;
the modification methods of the product are different, and the hydrophobic improvement effect of the product is different, so that the hydrophobic improvement effect is strongest by adopting the improvement method;
preferably, the preparation method of the hydrophobic liquid comprises the following steps:
stirring and mixing 2-5 parts of 1,2,3, 4-tetracarboxylbutane and 1-5 parts of 5-10% lanthanum chloride solution by mass, then adding 1-3 parts of silane coupling agent and 10-20 parts of acetone, and stirring and mixing fully to obtain the hydrophobic liquid.
Preferably, the silane coupling agent is a coupling agent KH 570.
Preferably, the preparation method of the hydrophobic stabilizer is as follows:
s111: delivering the bentonite into a proton irradiation box for irradiation treatment, wherein the irradiation power is 400-;
s112: grinding the irradiated bentonite to 50-100 meshes, adding the ground bentonite into 3-5 times of a treatment improver, stirring and dispersing, and washing and drying after the treatment is finished to obtain the hydrophobic stabilizer.
Preferably, the power of the stirring dispersion treatment is 300-500W, the stirring time is 20-30min, and the stirring temperature is 75-85 ℃.
The inventor of the invention finds that the hydrophobic stabilizer is replaced by bentonite, the ice layer shear strength of the product is obviously enhanced, the deicing strength is increased, and the use efficiency of the product is influenced;
therefore, after the bentonite modification method is adopted for optimization, the hydrophobic property and the ice layer shearing property of the product can be obviously optimized, the bentonite raw material is replaced by the carbon nano tube, the performance of the product is deteriorated, and further, the bentonite raw material is selected and modified.
Preferably, the treatment improver comprises the following raw materials in parts by weight: 5-10 parts of vinyl trimethoxy silane, 1-5 parts of chitosan, 2-6 parts of acetic acid, 10-20 parts of ethanol and 1-5 parts of octadecylamine.
Preferably, the curing agent is one or more of phenolic aldehyde amine curing agent and fatty amine curing agent; the solvent is one or a plurality of compositions of dimethylbenzene, acetone and ethyl acetate; the dispersant is one or more of BYK2015 and SN 5040.
The invention also provides a preparation method of the material for preventing the natural gas gasifier from frosting and icing, which comprises the following steps: firstly adding bisphenol A type epoxy resin and a solvent into a stirrer for mixing at the mixing speed of 500-550 r/min for 10-20min, then adding hydrophobic modified nanoparticles and a hydrophobic stabilizer, continuing to stir for 5-10min, then adding a dispersing agent and polysiloxane, continuing to stir at the speed of 450-550r/min for 15-25min, finishing stirring, finally adding a curing agent, and standing and reacting at 65-75 ℃ for 1-2h to obtain the material for preventing the natural gas gasifier from frosting and freezing.
Compared with the prior art, the invention has the following beneficial effects:
the material for preventing frosting and icing adopts bisphenol A epoxy resin to be matched with polysiloxane, hydrophobic modified nanoparticles, hydrophobic stabilizer, dispersant and curing agent, and the material has excellent hydrophobic and anti-icing performances, and meanwhile, the product is easier to remove after being frozen, and the deicing efficiency is high;
the hydrophobic modified nanoparticles are prepared by dispersing and activating boehmite nano powder by using a hydrochloric acid aqueous solution and sodium dodecyl itaconate propyl sulfonate, the activity performance is improved, after the treatment by a modification solution, the raw materials such as graphene and hexadecyl trimethoxy silane in the modification solution further improve the synergy of the boehmite nano powder, the sheet graphene and the boehmite nano powder are distributed in the raw materials of the product in a synergistic manner, the hydrophobicity can be obviously improved, and the hydrophobic liquid formed by 1,2,3, 4-tetracarboxylbutane, a lanthanum chloride solution and a silane coupling agent can further enhance the hydrophobicity effect of the nanoparticle product;
the hydrophobic stabilizer adopts lamellar bentonite, and after the lamellar bentonite is treated by raw materials such as vinyl trimethoxy silane, chitosan, octadecylamine and the like in the treatment improver, the excellent hydrophobic effect is achieved, the lamellar bentonite and the lamellar graphene have the sheet-layer mutual interpenetration and parallel synergistic effect, the hydrophobic and anti-icing effects of the product are perfected, and meanwhile, the bentonite has the blocking effect and can further play a role in stabilizing the hydrophobic stability of the product.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a material for preventing a natural gas gasifier from frosting and icing, which comprises the following raw materials in parts by weight:
35-45 parts of bisphenol A epoxy resin, 25-35 parts of solvent, 10-15 parts of polysiloxane, 5-10 parts of hydrophobic modified nanoparticles, 3-7 parts of hydrophobic stabilizer, 1-4 parts of dispersant and 10-15 parts of curing agent.
The material for preventing the natural gas gasifier from frosting and icing comprises the following raw materials in parts by weight:
40 parts of bisphenol A type epoxy resin, 30 parts of solvent, 12.5 parts of polysiloxane, 7.5 parts of hydrophobic modified nano powder, 5 parts of hydrophobic stabilizer, 2.5 parts of dispersant and 12.5 parts of curing agent.
The modification method of the hydrophobically modified nanoparticle of the embodiment comprises the following steps:
s101: adding 20-30 parts of boehmite nano powder into 45-55 parts of hydrochloric acid aqueous solution with the mass fraction of 5%, stirring and fully dispersing, adding 5-10 parts of sodium monododecyl itaconate propyl sulfonate, continuously stirring fully, washing with water, and drying to obtain pretreated boehmite;
s102: blending 5-10 parts of graphene and 10-20 parts of ethanol to form a blending agent, then adding 2-5 parts of hexadecyl trimethoxy silane and 1-4 parts of perfluoro caprylic acid, and stirring and mixing fully to obtain a modified solution;
s103: fully stirring and mixing the pretreated boehmite and the modification liquid according to the weight ratio of 1:5, stirring for 30-40min at the temperature of 75-85 ℃, wherein the stirring speed is 450-550r/min, and finishing stirring to obtain the graphene composite modified boehmite;
s104: and adding the graphene composite modified boehmite into 3-5 times of hydrophobic liquid, stirring and mixing fully, washing with water, and drying to obtain the hydrophobic modified nanoparticles.
The preparation method of the hydrophobic liquid in this example is as follows:
stirring and mixing 2-5 parts of 1,2,3, 4-tetracarboxylbutane and 1-5 parts of 5-10% lanthanum chloride solution by mass, then adding 1-3 parts of silane coupling agent and 10-20 parts of acetone, and stirring and mixing fully to obtain the hydrophobic liquid.
The silane coupling agent of this example was a coupling agent KH 570.
The preparation method of the hydrophobic stabilizer of this example is as follows:
s111: delivering the bentonite into a proton irradiation box for irradiation treatment, wherein the irradiation power is 400-;
s112: grinding the irradiated bentonite to 50-100 meshes, adding the ground bentonite into 3-5 times of a treatment improver, stirring and dispersing, and washing and drying after the treatment is finished to obtain the hydrophobic stabilizer.
The stirring and dispersing treatment power of the embodiment is 300-500W, the stirring time is 20-30min, and the stirring temperature is 75-85 ℃.
The treatment improver of the embodiment comprises the following raw materials in parts by weight: 5-10 parts of vinyl trimethoxy silane, 1-5 parts of chitosan, 2-6 parts of acetic acid, 10-20 parts of ethanol and 1-5 parts of octadecylamine.
The curing agent of the embodiment is one or more of phenolic aldehyde amine curing agent and fatty amine curing agent; the solvent is one or a plurality of compositions of dimethylbenzene, acetone and ethyl acetate; the dispersant is one or more of BYK2015 and SN 5040.
The preparation method of the material for preventing the natural gas gasifier from frosting and icing comprises the following steps: firstly adding bisphenol A type epoxy resin and a solvent into a stirrer for mixing at the mixing speed of 500-550 r/min for 10-20min, then adding hydrophobic modified nanoparticles and a hydrophobic stabilizer, continuing to stir for 5-10min, then adding a dispersing agent and polysiloxane, continuing to stir at the speed of 450-550r/min for 15-25min, finishing stirring, finally adding a curing agent, and standing and reacting at 65-75 ℃ for 1-2h to obtain the material for preventing the natural gas gasifier from frosting and freezing.
Example 1.
The invention provides a material for preventing a natural gas gasifier from frosting and icing, which comprises the following raw materials in parts by weight:
35 parts of bisphenol A epoxy resin, 25 parts of solvent, 10 parts of polysiloxane, 5 parts of hydrophobic modified nanoparticles, 3 parts of hydrophobic stabilizer, 1 part of dispersant and 10 parts of curing agent.
The modification method of the hydrophobically modified nanoparticle of the embodiment comprises the following steps:
s101: adding 20 parts of boehmite nano powder into 45 parts of hydrochloric acid aqueous solution with the mass fraction of 5%, stirring and dispersing fully, adding 5 parts of sodium monododecyl itaconate propyl sulfonate, continuously stirring fully, washing with water, and drying to obtain pretreated boehmite;
s102: blending 5 parts of graphene and 10 parts of ethanol to form a blending agent, then adding 2 parts of hexadecyl trimethoxy silane and 1 part of perfluoro caprylic acid, and stirring and mixing fully to obtain a modified solution;
s103: fully stirring and mixing the pretreated boehmite and the modification solution according to the weight ratio of 1:5, stirring for 30min at 75 ℃, wherein the stirring speed is 450r/min, and obtaining the graphene composite modified boehmite after stirring;
s104: and adding the graphene composite modified boehmite into 3 times of hydrophobic liquid, stirring and mixing fully, washing and drying to obtain the hydrophobic modified nanoparticles.
The preparation method of the hydrophobic liquid in this example is as follows:
stirring and mixing 2 parts of 1,2,3, 4-tetracarboxylbutane and 1 part of 5 mass percent lanthanum chloride solution, then adding 1 part of silane coupling agent and 10 parts of acetone, and stirring and mixing fully to obtain the hydrophobic liquid.
The silane coupling agent of the present example was a coupling agent KH 570.
The preparation method of the hydrophobic stabilizer of this example is as follows:
s111: delivering the bentonite into a proton irradiation box for irradiation treatment, wherein the irradiation power is 400W, and the irradiation time is 10 min;
s112: grinding the irradiated bentonite to 50 meshes, adding the ground bentonite into a treatment improver which is 3 times of the ground bentonite, stirring and dispersing, and washing and drying the mixture after the treatment is finished to obtain the hydrophobic stabilizer.
The stirring dispersion treatment of this example was carried out at a power of 300W, a stirring time of 20min and a stirring temperature of 75 ℃.
The treatment improver of the embodiment comprises the following raw materials in parts by weight: 5 parts of vinyl trimethoxy silane, 1 part of chitosan, 2 parts of acetic acid, 10 parts of ethanol and 1 part of octadecylamine.
The curing agent of this example was a phenolic amine curing agent; the solvent is xylene; the dispersant is BYK 2015.
The preparation method of the material for preventing the natural gas gasifier from frosting and icing comprises the following steps: adding bisphenol A type epoxy resin and a solvent into a stirrer to be mixed at the mixing speed of 500r/min for 10min, then adding hydrophobic modified nanoparticles and a hydrophobic stabilizer, continuing to stir for 5min, then adding a dispersing agent and polysiloxane, continuing to stir at the speed of 450r/min for 15min, finishing stirring, finally adding a curing agent, and standing and reacting at 65 ℃ for 1h to obtain the material for preventing the natural gas gasifier from frosting and freezing.
Example 2.
The invention provides a material for preventing a natural gas gasifier from frosting and icing, which comprises the following raw materials in parts by weight:
45 parts of bisphenol A epoxy resin, 35 parts of solvent, 15 parts of polysiloxane, 10 parts of hydrophobic modified nanoparticles, 7 parts of hydrophobic stabilizer, 4 parts of dispersant and 15 parts of curing agent.
The modification method of the hydrophobically modified nanoparticle of the embodiment comprises the following steps:
s101: adding 30 parts of boehmite nano powder into 55 parts of hydrochloric acid aqueous solution with the mass fraction of 5%, stirring and dispersing fully, adding 10 parts of sodium monododecyl itaconate propyl sulfonate, continuously stirring fully, washing with water, and drying to obtain pretreated boehmite;
s102: blending 10 parts of graphene and 20 parts of ethanol to form a blending agent, then adding 5 parts of hexadecyl trimethoxy silane and 4 parts of perfluoro caprylic acid, and stirring and mixing fully to obtain a modified solution;
s103: fully stirring and mixing the pretreated boehmite and the modification solution according to the weight ratio of 1:5, stirring at 85 ℃ for 40min at the stirring speed of 550r/min, and finishing stirring to obtain graphene composite modified boehmite;
s104: and adding the graphene composite modified boehmite into 5 times of hydrophobic liquid, stirring and mixing fully, washing and drying to obtain the hydrophobic modified nanoparticles.
The preparation method of the hydrophobic liquid in this example is:
5 parts of 1,2,3, 4-tetracarboxylbutane and 5 parts of lanthanum chloride solution with the mass fraction of 10% are stirred and mixed, then 3 parts of silane coupling agent and 20 parts of acetone are added, and stirring and mixing are carried out fully to obtain the hydrophobic liquid.
The silane coupling agent of this example was a coupling agent KH 570.
The preparation method of the hydrophobic stabilizer of this example is as follows:
s111: delivering the bentonite into a proton irradiation box for irradiation treatment, wherein the irradiation power is 500W, and the irradiation time is 20 min;
s112: grinding the irradiated bentonite to 100 meshes, then adding the ground bentonite into 5 times of a treatment improver, stirring and dispersing, and washing and drying after the treatment to obtain the hydrophobic stabilizer.
The stirring and dispersing treatment of this example was carried out at a power of 500W for a stirring time of 30min and a stirring temperature of 85 ℃.
The treatment improver of the embodiment comprises the following raw materials in parts by weight: 10 parts of vinyl trimethoxy silane, 5 parts of chitosan, 6 parts of acetic acid, 20 parts of ethanol and 5 parts of octadecylamine.
The curing agent of this example was a phenolic amine curing agent; the solvent is xylene; the dispersant is BYK 2015.
The preparation method of the material for preventing the natural gas gasifier from frosting and icing comprises the following steps: adding bisphenol A type epoxy resin and a solvent into a stirrer to be mixed at the mixing speed of 1000r/min for 20min, then adding hydrophobic modified nanoparticles and a hydrophobic stabilizer, continuing to stir for 10min, then adding a dispersing agent and polysiloxane, continuing to stir at the speed of 550r/min for 25min, finishing stirring, finally adding a curing agent, and standing and reacting at 75 ℃ for 2h to obtain the material for preventing the natural gas gasifier from frosting and freezing.
Example 3.
The invention provides a material for preventing a natural gas gasifier from frosting and icing, which comprises the following raw materials in parts by weight:
40 parts of bisphenol A type epoxy resin, 30 parts of solvent, 12.5 parts of polysiloxane, 7.5 parts of hydrophobic modified nano powder, 5 parts of hydrophobic stabilizer, 2.5 parts of dispersant and 12.5 parts of curing agent.
The modification method of the hydrophobically modified nanoparticle of the embodiment comprises the following steps:
s101: adding 25 parts of boehmite nano powder into 50 parts of hydrochloric acid aqueous solution with the mass fraction of 5%, stirring and dispersing fully, adding 7.5 parts of sodium monododecyl itaconate propyl sulfonate, continuously stirring fully, washing with water, and drying to obtain pretreated boehmite;
s102: blending 7.5 parts of graphene and 15 parts of ethanol to form a blending agent, then adding 3.5 parts of hexadecyl trimethoxy silane and 2.5 parts of perfluoro caprylic acid, and stirring and mixing fully to obtain a modified solution;
s103: fully stirring and mixing the pre-treated boehmite and the modification liquid according to the weight ratio of 1:5, stirring at the temperature of 80 ℃ for 35min at the stirring speed of 500r/min, and finishing stirring to obtain graphene composite modified boehmite;
s104: and adding the graphene composite modified boehmite into 4 times of hydrophobic liquid, stirring and mixing fully, washing and drying to obtain the hydrophobic modified nanoparticles.
The preparation method of the hydrophobic liquid in this example is as follows:
stirring and mixing 3.5 parts of 1,2,3, 4-tetracarboxylbutane and 3 parts of 7.5 mass percent lanthanum chloride solution, then adding 2 parts of silane coupling agent and 15 parts of acetone, and stirring and mixing fully to obtain the hydrophobic liquid.
The silane coupling agent of this example was a coupling agent KH 570.
The preparation method of the hydrophobic stabilizer of this example is as follows:
s111: delivering the bentonite into a proton irradiation box for irradiation treatment, wherein the irradiation power is 450W, and the irradiation time is 15 min;
s112: grinding the irradiated bentonite to 75 meshes, adding the ground bentonite into 4 times of a treatment improver, stirring and dispersing, and washing and drying after the treatment to obtain the hydrophobic stabilizer.
The stirring and dispersing treatment of this example was carried out at a power of 400W, a stirring time of 25min and a stirring temperature of 80 ℃.
The treatment improver of the embodiment comprises the following raw materials in parts by weight: 7.5 parts of vinyl trimethoxy silane, 3 parts of chitosan, 4 parts of acetic acid, 15 parts of ethanol and 3 parts of octadecylamine.
The curing agent of this example is a fatty amine curing agent; the solvent is acetone; the dispersant is SN 5040.
The preparation method of the material for preventing the natural gas gasifier from frosting and icing comprises the following steps: adding bisphenol A type epoxy resin and a solvent into a stirrer to be mixed at the mixing speed of 750r/min for 15min, then adding hydrophobic modified nanoparticles and a hydrophobic stabilizer, continuing to stir for 7.5min, then adding a dispersing agent and polysiloxane, continuing to stir at the speed of 500r/min for 10min, finishing stirring, finally adding a curing agent, and standing at 70 ℃ for reaction for 1.5h to obtain the material for preventing the natural gas gasifier from frosting and icing.
Comparative example 1.
Different from the embodiment 3, the hydrophobic modified nano powder is replaced by nano silicon dioxide.
Comparative example 2.
Different from the example 3, the modification of the hydrophobic modified nano powder does not adopt the treatment of the modifying solution.
Comparative example 3.
Different from the example 3, the hydrophobic modification nano powder is not treated by hydrophobic liquid.
Comparative example 4.
Different from the embodiment 3, the modification method of the hydrophobic modified nano powder is different;
blending 25 parts of boehmite nano powder and 10 parts of graphene, adding the mixture into 50 parts of hydrochloric acid aqueous solution with the mass fraction of 5%, stirring and fully dispersing, adding 2.5 parts of silane coupling agent KH560, 1-3 parts of hexadecyl trimethoxy silane and 1-5 parts of lauryl sodium sulfate, stirring and fully mixing, washing with water, and drying to obtain the hydrophobically modified nano powder.
Comparative example 5.
The difference from example 3 is that the hydrophobic stabilizer is replaced by bentonite.
Comparative example 6.
The difference from example 3 is that the bentonite raw material in the hydrophobic stabilizer is replaced by carbon nanotubes.
The products of examples 1-3 and comparative examples 1-6 were subjected to a performance test;
the contact angle was measured using the GB/T30693-2014 standard: testing the shear strength GB/T7124-2008 standard of the ice layer on the surface of the coating;
the products of examples 1-3 and comparative examples 1-6 were tested for their performance as follows:
Figure 261563DEST_PATH_IMAGE001
as can be seen from comparative example 1 and examples 1 to 3;
the hydrophobic modified nano powder is replaced by nano silicon dioxide, so that the contact angle and the ice layer shear strength of the product are obviously improved, the hydrophobic performance of the product is obviously deteriorated, the effect of the ice layer shear strength is deteriorated, and the ice is difficult to remove;
it can be seen from comparative examples 2-4 that the modification methods of the products are different, and the hydrophobic modification effects of the products are different, and the hydrophobic modification effect is strongest by adopting the modification method of the invention;
it can be seen from comparative examples 5-6 that the hydrophobic stabilizer is replaced by bentonite, the ice layer shear strength of the product is significantly enhanced, the de-icing strength is increased, and the use of the product is affected, so that after the bentonite modification method is optimized, the hydrophobic and ice layer shear properties of the product can be significantly optimized, and the bentonite raw material is replaced by carbon nanotubes, so that the performance of the product is deteriorated.
The natural gas gasifier is coated with the products of examples 1-3 and comparative examples 1-6 and the anti-icing material sold in the market, and then is tested for 30min at the temperature of minus 10 ℃, and the icing effect is observed and tested.
Figure 241020DEST_PATH_IMAGE002
From the performance tests, the application of the product disclosed by the invention can effectively block the icing effect, and by adopting other comparative examples, the product has different icing phenomena, so that the product has excellent hydrophobic and anti-icing effects.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. The material for preventing the natural gas gasifier from frosting and icing is characterized by comprising the following raw materials in parts by weight:
35-45 parts of bisphenol A epoxy resin, 25-35 parts of solvent, 10-15 parts of polysiloxane, 5-10 parts of hydrophobic modified nanoparticles, 3-7 parts of hydrophobic stabilizer, 1-4 parts of dispersant and 10-15 parts of curing agent.
2. The material for preventing the natural gas gasifier from frosting and icing according to claim 1, wherein the material for preventing the natural gas gasifier from frosting and icing comprises the following raw materials in parts by weight:
40 parts of bisphenol A type epoxy resin, 30 parts of solvent, 12.5 parts of polysiloxane, 7.5 parts of hydrophobic modified nano powder, 5 parts of hydrophobic stabilizer, 2.5 parts of dispersant and 12.5 parts of curing agent.
3. The material for preventing the natural gas gasifier from frosting and icing according to claim 1, wherein the method for modifying the hydrophobic modified nanoparticles comprises the following steps:
s101: adding 20-30 parts of boehmite nano powder into 45-55 parts of hydrochloric acid aqueous solution with the mass fraction of 5%, stirring and fully dispersing, adding 5-10 parts of sodium monododecyl itaconate propyl sulfonate, continuously stirring fully, washing with water, and drying to obtain pretreated boehmite;
s102: blending 5-10 parts of graphene and 10-20 parts of ethanol to form a blending agent, then adding 2-5 parts of hexadecyl trimethoxy silane and 1-4 parts of perfluoro caprylic acid, and stirring and mixing fully to obtain a modified solution;
s103: fully stirring and mixing the pretreated boehmite and the modification liquid according to the weight ratio of 1:5, stirring for 30-40min at the temperature of 75-85 ℃, wherein the stirring speed is 450-550r/min, and finishing stirring to obtain the graphene composite modified boehmite;
s104: and adding the graphene composite modified boehmite into 3-5 times of hydrophobic liquid, stirring and mixing fully, washing and drying to obtain the hydrophobic modified nanoparticles.
4. The material for preventing the natural gas gasifier from frosting and icing according to claim 3, wherein the hydrophobic liquid is prepared by the following steps:
stirring and mixing 2-5 parts of 1,2,3, 4-tetracarboxylbutane and 1-5 parts of 5-10% lanthanum chloride solution by mass, then adding 1-3 parts of silane coupling agent and 10-20 parts of acetone, and stirring and mixing fully to obtain the hydrophobic liquid.
5. The material for preventing the frost and ice of the natural gas gasifier of claim 4, wherein the silane coupling agent is KH 570.
6. The material for preventing the natural gas gasifier from frosting and icing according to claim 1, wherein the hydrophobic stabilizer is prepared by a method comprising the following steps:
s111: delivering the bentonite into a proton irradiation box for irradiation treatment, wherein the irradiation power is 400-;
s112: grinding the irradiated bentonite to 50-100 meshes, adding the ground bentonite into 3-5 times of a treatment improver, stirring and dispersing, and washing and drying after the treatment is finished to obtain the hydrophobic stabilizer.
7. The material as claimed in claim 6, wherein the stirring dispersion treatment power is 300-500W, the stirring time is 20-30min, and the stirring temperature is 75-85 ℃.
8. The material for preventing the natural gas gasifier from frosting and icing according to claim 6, wherein the treatment improver comprises the following raw materials in parts by weight: 5-10 parts of vinyl trimethoxy silane, 1-5 parts of chitosan, 2-6 parts of acetic acid, 10-20 parts of ethanol and 1-5 parts of octadecylamine.
9. The material for preventing the natural gas gasifier from frosting and icing according to claim 1, wherein the curing agent is one or more of phenolic aldehyde amine curing agent and aliphatic amine curing agent; the solvent is one or a plurality of compositions of dimethylbenzene, acetone and ethyl acetate; the dispersant is one or more of BYK2015 and SN 5040.
10. A method for preparing a material for preventing the formation of frost and ice in a natural gas gasifier as claimed in any one of claims 1 to 9, comprising the steps of: firstly adding bisphenol A type epoxy resin and a solvent into a stirrer for mixing at the mixing speed of 500-550 r/min for 10-20min, then adding hydrophobic modified nanoparticles and a hydrophobic stabilizer, continuing to stir for 5-10min, then adding a dispersing agent and polysiloxane, continuing to stir at the speed of 450-550r/min for 15-25min, finishing stirring, finally adding a curing agent, and standing and reacting at 65-75 ℃ for 1-2h to obtain the material for preventing the natural gas gasifier from frosting and freezing.
CN202210634865.8A 2022-06-07 2022-06-07 Material for preventing natural gas gasifier from frosting and freezing and preparation method thereof Pending CN114907749A (en)

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Application publication date: 20220816