CN109943156B - Waterproof coating prepared from waste polystyrene and graphene polymer and having VOCs content of 0 and preparation method thereof - Google Patents
Waterproof coating prepared from waste polystyrene and graphene polymer and having VOCs content of 0 and preparation method thereof Download PDFInfo
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Abstract
The invention provides a waterproof coating with VOCs content of 0, which is prepared by utilizing waste polystyrene and graphene macromolecules, and can resist water pressure of 0.87-0.92MPa, the bonding strength of alkali treatment is 2.0-2.2MPa, and the bonding strength of a wet base surface is 1.8-2.3 MPa; the required raw materials comprise waste polystyrene, polypropylene melt-blown material, mixed solvent, fumed silica, dispersing agent, graphene powder, mixed carbon four, accelerator, leveling agent and color master batch; the preparation method comprises the steps of raw material preparation, graphene slurry preparation, waste polystyrene dissolution and electric pulse mixing; the solid content of the waterproof material reaches 72.1-75.0%, the waterproof material is impervious to water at 0.3MPa for 172-187min, and the waterproof material has the characteristics of graphene and performances of corrosion resistance, explosion resistance, radiation resistance, impact resistance and the like.
Description
Technical Field
The invention belongs to the technical field of waterproof materials, relates to a waterproof coating prepared from waste polystyrene and graphene macromolecules, and particularly relates to a waterproof coating prepared from waste polystyrene and graphene macromolecules and having a VOCs content of 0 and a preparation method thereof.
Background
Graphene (Graphene) is a new material with a single-layer or few-layer lamellar structure formed by carbon atoms, has a thermal conductivity coefficient as high as 5300W/m.K, has a special stable structure, has the characteristic that a carbon-carbon bond is only 1.42Aring, is ultrathin, and is generally accepted as the best heat-conducting material in the world at present.
The polystyrene foam plastic is an excellent heat-insulating, sound-absorbing, shockproof and packaging material, the annual polystyrene output in the world reaches millions of tons, and the polystyrene foam plastic is not easy to naturally degrade, so that the white pollution caused by the accumulation of a large amount of polystyrene foam packaging lunch boxes and packaging part materials is increasingly serious, and the recycling potential and significance are great.
The Chinese patent with publication No. CN11136257C provides a method for preparing styrene-acrylic emulsion from waste polystyrene foam plastics, which comprises dissolving waste polystyrene foam plastics with acrylic acid (ester) monomer, adding emulsifier, water, etc., emulsifying by high-strength emulsifying means, adding initiator, and polymerizing to obtain a special styrene-acrylic emulsion, which can be used as building roof, inner and outer walls, paper-making paint and adhesive instead of common styrene-acrylic emulsion.
The Chinese patent with application number 200510045993.5 provides a modified waste polystyrene foam plastic coating, which adopts low-toxicity and low-cost industrial solvent to fully dissolve waste polystyrene foam plastic at normal temperature to be used as a base material, and then adds emulsifying agent, dispersing agent, solid filler, extender pigment, plasticizer, antifreezing agent and pigment. The cyclohexene used is an industrial solvent with certain toxicity, is not good for the health of human bodies living in the cyclohexene for a long time, is only suitable for exterior wall coatings, is not suitable for interior walls and has limited application range.
Chinese patent with publication number CN109266119A provides a graphene conductive coating, which comprises the following components in parts by weight: 60-70 parts of styrene-acrylic emulsion, 10-30 parts of alkyd resin, 3-10 parts of modified graphene, 0.6-2.4 parts of dispersing agent, 0.1-1 part of defoaming agent and 80-160 parts of solvent; the modified graphene is mainly prepared from graphene, maleic acid, chitosan, zinc oxide, tin chloride and benzylamine. The graphene conductive coating has excellent conductivity and good salt spray corrosion resistance. However, the raw materials are expensive, the preparation method is complicated, and the anti-corrosion, anti-explosion, anti-radiation and anti-impact properties are not achieved.
The prior art has the following main defects: (1) the existing waterproof coating utilizing waste polystyrene and graphene macromolecules has low comprehensive performance and cannot have the characteristics of graphene and the performances of corrosion resistance, explosion resistance, radiation resistance, impact resistance and the like; (2) the existing waterproof coating using waste polystyrene and graphene macromolecules has high content of VOCs and pollutes the environment; (3) the existing waterproof coating using waste polystyrene and graphene macromolecules has weak waterproof sealing property and impermeability.
Disclosure of Invention
Aiming at the defects, the invention aims to provide a waterproof coating prepared from waste polystyrene and graphene polymers and having a VOCs content of 0 and a preparation method thereof. The invention can realize the following purposes:
(1) according to the waterproof coating, polystyrene (waste foam) is added, the film forming, crystallization and waterproof durable effects are better than those of the non-added waterproof coating, on one hand, pollutants and VOCs (volatile organic compounds) are adsorbed by adding a graphene high polymer material, so that the content of the pollutants is greatly reduced, on the other hand, the finished product effect is more excellent due to the characteristics of the graphene material, and the graphene high polymer material has the characteristics of graphene and performances of corrosion resistance, explosion resistance, radiation resistance, impact resistance and the like;
(2) according to the waterproof coating prepared by using the waste polystyrene and the graphene polymer, the content of VOCs is 0, and the solid content reaches 72.1-75.0%;
(3) the waterproof coating with the VOCs content of 0, which is prepared by utilizing the waste polystyrene and the graphene polymer, has excellent waterproof sealing property and impermeability;
(4) the waterproof coating prepared from the waste polystyrene and the graphene polymer and having the VOCs content of 0 also has excellent low-temperature flexibility and no crack at the lowest temperature of-20 ℃;
(5) the waterproof coating prepared from the waste polystyrene and the graphene polymer and having the VOCs content of 0 has high bonding strength in alkali treatment and high bonding strength on a wet base surface.
(6) The preparation method of the waterproof coating with the VOCs content of 0, which is prepared from the waste polystyrene and the graphene polymer, has the advantages of simple process, convenience in coating of the obtained product, rapidness in film forming and low coating and spinning rate.
In order to solve the technical problems, the following technical scheme is adopted:
a waterproof coating prepared from waste polystyrene and graphene polymers and having a VOCs content of 0 can resist a water pressure of 0.87-0.92MPa, an alkali treatment bonding strength of 2.0-2.2MPa and a wet base bonding strength of 1.8-2.3 MPa.
The technical scheme of the invention is further optimized as follows:
the waterproof coating prepared from the waste polystyrene and the graphene polymer and having the VOCs content of 0 has the solid content of 72.1-75.0% and is waterproof at 0.3MPa for 172-187 min.
The invention relates to a waterproof coating with VOCs content of 0, which is prepared by utilizing waste polystyrene and graphene macromolecules, and comprises the following raw materials:
waste polystyrene, polypropylene melt-blown material, mixed solvent, fumed silica, dispersing agent, graphene powder, mixed carbon four, accelerator, leveling agent and color master batch.
Specifically, in this embodiment, the raw materials include, by weight: 300 parts of waste polystyrene 200-used materials, 70-90 parts of polypropylene melt-blown materials, 400 parts of mixed solvents 300-used materials, 20-30 parts of fumed silica, 25-30 parts of dispersing agents, 25-30 parts of graphene powder, 10-20 parts of mixed carbon, 90-120 parts of accelerators, 10-20 parts of flatting agents and 5-12 parts of color master batches.
The graphene powder is black in color, the fixed carbon content is more than or equal to 99.9%, the water content is less than or equal to 0.5%, the thickness is 0.55-1.2nm, the number of layers is 1-5, and the specific surface area is 554.364m 2/g.
The MFR range of the polypropylene melt-blown material is 15-35g/10min, the grain weight range is 30-40 grains/g, and the bulk density range is 45-55g/100 ml.
The mixed solvent consists of mechanical oil, aviation kerosene, dimethylbenzene and 12-hydroxy-9-octadecenoic acid in a mass ratio of 6:7:25: 3; the mechanical oil is preferably-3 # oil.
The mesh number of the fumed silica is 1000 meshes, the content of an effective component SiO2 is 99.8%, the BET surface area is 170 +/-20 m2/g, the carbon content is 0.7-1.3wt%, the pH value is 3.7-4.7, the content of Al2O3 is less than or equal to 0.05wt%, the content of Fe2O3 is less than or equal to 0.001wt%, the content of TiO2 is less than or equal to 0.03wt%, and the content of HCL is less than or equal to 0.1 wt%.
The dispersing agent is a mixture of styrene monomer, sodium dodecyl benzene sulfonate and sodium bisulfate, and the molar ratio is 10:5: 1.
The mixed C4 is a petroleum thermal cracking byproduct, wherein the olefin content is 15.6-25.5%, the alkyne content is 8.8-12.5%, and the water content is 0.1%.
The accelerator is a mixture of dibutyl phthalate and ethylene glycol, and the mass ratio of the dibutyl phthalate to the ethylene glycol is 15: 1.
The leveling agent is a mixture of isophorone and diacetone alcohol, and the mass ratio of the mixture to the diacetone alcohol is 1: 1.
The invention relates to a preparation method of a waterproof coating with the VOCs content of 0, which is prepared by utilizing waste polystyrene and graphene macromolecules, and comprises the following steps: preparing raw materials, preparing graphene slurry, dissolving waste polystyrene, mixing electric pulses, and taking finished products out of a warehouse. The method specifically comprises the following steps:
preparing the raw materials: the raw materials are weighed according to the weight parts of the waste polystyrene, the polypropylene melt-spray material, the mixed solvent, the fumed silica, the dispersing agent, the graphene powder, the mixed carbon four, the accelerator, the leveling agent and the color master in the embodiment for later use.
Preparing the graphene slurry: placing graphene powder, fumed silica and a dispersing agent in a colloid mill, adding sodium carbonate powder accounting for 0.1% of the total mass, uniformly mixing, carrying out fine grinding until D90 is less than or equal to 0.75 um;
and adding a proper amount of soft water, and performing ultrasonic-ultraviolet synergistic treatment for 5min under nitrogen flow to perform refined dispersion to obtain the graphene slurry.
The ultrasonic frequency is 58KHz, the power is 500W, the wavelength of ultraviolet light is 388nm, and the flow of nitrogen flow is 0.7L/min.
Dissolving the waste polystyrene: the waste polystyrene and polypropylene melt-blown material is cleaned and soaked in a cleaning solution at the temperature of 85 ℃ to remove solid impurities such as attached grease and other silt.
The washing and soaking liquid is prepared from the following components in parts by weight: 28 parts of mirabilite, 10 parts of sodium chloride, 1 part of sodium bicarbonate powder, 0.1 part of bismuth trioxide powder and 100 parts of deionized water.
Taking out, washing the waste polystyrene by using clear water to be neutral, naturally airing the waste polystyrene, dissolving the waste polystyrene in a mixed solvent at 86-95 ℃, adding mixed carbon four and color master, wherein in the embodiment, the color master is white titanium dioxide color master batch, or color master batches with other colors, stirring the mixture while adding the color master batches, and the stirring speed is 4500 rpm to obtain the waste polystyrene dissolving solution.
Mixing the electric pulses: and (3) adding the graphene slurry obtained in the step (3) into a waste polystyrene dissolving solution, adding an accelerator and a leveling agent at the temperature of 185 ℃, uniformly stirring, treating the mixture for 3-5min by adopting a pulsed electric field with the frequency of 18Hz and the electric field intensity of 20kV/cm, and stirring for 12min at the speed of 2500rad/min to obtain an initial product.
And (3) discharging the finished product out of the warehouse: dispersing the initial product uniformly by an ultrasonic system to obtain a final product, inspecting, packaging and delivering out of the warehouse.
By adopting the technical scheme, compared with the prior art, the invention has the following advantages:
(1) according to the waterproof coating, polystyrene (waste foam) is added, the film forming, crystallization and waterproof durable effects are better than those of the non-added waterproof coating, on one hand, pollutants and vocs (volatile organic compounds) are adsorbed by adding a graphene high polymer material, so that the content of the pollutants is greatly reduced, on the other hand, the finished product effect is more excellent due to the characteristics of the graphene material, and the graphene high polymer material has the characteristics of graphene and performances of corrosion resistance, explosion resistance, radiation resistance, impact resistance and the like;
(2) according to the waterproof coating prepared by using the waste polystyrene and the graphene polymer, the content of VOCs is 0, and the solid content reaches 72.1-75.0%;
(3) the waterproof coating with the VOCs content of 0, which is prepared by utilizing the waste polystyrene and the graphene polymer, has excellent waterproof sealing property and impermeability, is waterproof at 0.3MPa for 172-187min, and can resist the water pressure of 0.87-0.92 MPa;
(4) the waterproof coating prepared from the waste polystyrene and the graphene polymer and having the VOCs content of 0 also has excellent low-temperature flexibility and no crack at the lowest temperature of-20 ℃;
(5) the waterproof coating prepared from the waste polystyrene and the graphene polymer and having the VOCs content of 0 has the alkali treatment bonding strength of 2.0-2.2MPa and the wet base surface bonding strength of 1.8-2.3 MPa.
(6) The preparation method of the waterproof coating with the VOCs content of 0, which is prepared from the waste polystyrene and the graphene polymer, has the advantages of simple process, convenience in coating of the obtained product, rapidness in film forming and low coating and spinning rate.
Detailed Description
Embodiment 1 waterproof coating with VOCs content of 0 prepared from waste polystyrene and graphene polymer
The invention relates to a waterproof coating with VOCs content of 0, which is prepared by utilizing waste polystyrene and graphene macromolecules, and comprises the following raw materials:
waste polystyrene, polypropylene melt-blown material, mixed solvent, fumed silica, dispersing agent, graphene powder, mixed carbon four, accelerator, leveling agent and color master batch.
Specifically, in this embodiment, the raw materials include, by weight: 300 parts of waste polystyrene, 70 parts of polypropylene melt-blown material, 400 parts of mixed solvent, 20 parts of fumed silica, 30 parts of dispersing agent, 25 parts of graphene powder, 20 parts of mixed carbon, 90 parts of accelerator, 20 parts of flatting agent and 5 parts of color master batch;
the graphene powder is black in color, the fixed carbon content is more than or equal to 99.9%, the water content is less than or equal to 0.5%, the thickness is 0.55-1.2nm, the number of layers is 1-5, and the specific surface area is 554.364m 2/g;
the MFR range of the polypropylene melt-blown material is 15-35g/10min, the grain weight range is 30-40 grains/g, and the bulk density range is 45-55g/100 ml;
the mixed solvent consists of mechanical oil, aviation kerosene, dimethylbenzene and 12-hydroxy-9-octadecenoic acid in a mass ratio of 6:7:25: 3; the mechanical oil is preferably-3 # oil;
the mesh number of the fumed silica is 1000 meshes, the content of an effective component SiO2 is 99.8 percent, the BET surface area is 170 +/-20 m2/g, the carbon content is 0.7-1.3 percent by weight, the pH value is 3.7-4.7, the content of Al2O3 is less than or equal to 0.05 percent by weight, the content of Fe2O3 is less than or equal to 0.001 percent by weight, the content of TiO2 is less than or equal to 0.03 percent by weight, and the content of HCL is less than or equal to 0.1 percent by weight;
the dispersing agent is a mixture of styrene monomer, sodium dodecyl benzene sulfonate and sodium bisulfate, and the molar ratio is 10:5: 1;
the mixed C4 is a petroleum thermal cracking byproduct, wherein the olefin content is 15.6-25.5%, the alkyne content is 8.8-12.5%, and the water content is 0.1%;
the accelerator is a mixture of dibutyl phthalate and ethylene glycol, and the mass ratio of the dibutyl phthalate to the ethylene glycol is 15: 1;
the leveling agent is a mixture of isophorone and diacetone alcohol, and the mass ratio is 1: 1;
embodiment 2 waterproof coating with VOCs content of 0 prepared from waste polystyrene and graphene polymer
The invention relates to a waterproof coating with VOCs content of 0, which is prepared by utilizing waste polystyrene and graphene macromolecules, and comprises the following raw materials:
waste polystyrene, polypropylene melt-blown material, mixed solvent, fumed silica, dispersing agent, graphene powder, mixed carbon four, accelerator, leveling agent and color master batch.
Specifically, in this embodiment, the raw materials include, by weight: 265 parts of waste polystyrene, 80 parts of polypropylene melt-blown material, 350 parts of mixed solvent, 25 parts of fumed silica, 28 parts of dispersing agent, 27 parts of graphene powder, 14 parts of mixed carbon, 110 parts of accelerator, 12 parts of leveling agent and 8 parts of color master batch;
the graphene powder is black in color, the fixed carbon content is more than or equal to 99.9%, the water content is less than or equal to 0.5%, the thickness is 0.55-1.2nm, the number of layers is 1-5, and the specific surface area is 554.364m 2/g;
the MFR range of the polypropylene melt-blown material is 15-35g/10min, the grain weight range is 30-40 grains/g, and the bulk density range is 45-55g/100 ml;
the mixed solvent consists of mechanical oil, aviation kerosene, dimethylbenzene and 12-hydroxy-9-octadecenoic acid in a mass ratio of 6:7:25: 3; the mechanical oil is preferably-3 # oil;
the mesh number of the fumed silica is 1000 meshes, the content of an effective component SiO2 is 99.8 percent, the BET surface area is 170 +/-20 m2/g, the carbon content is 0.7-1.3 percent by weight, the pH value is 3.7-4.7, the content of Al2O3 is less than or equal to 0.05 percent by weight, the content of Fe2O3 is less than or equal to 0.001 percent by weight, the content of TiO2 is less than or equal to 0.03 percent by weight, and the content of HCL is less than or equal to 0.1 percent by weight;
the dispersing agent is a mixture of styrene monomer, sodium dodecyl benzene sulfonate and sodium bisulfate, and the molar ratio is 10:5: 1;
the mixed C4 is a petroleum thermal cracking byproduct, wherein the olefin content is 15.6-25.5%, the alkyne content is 8.8-12.5%, and the water content is 0.1%;
the accelerator is a mixture of dibutyl phthalate and ethylene glycol, and the mass ratio of the dibutyl phthalate to the ethylene glycol is 15: 1;
the leveling agent is a mixture of isophorone and diacetone alcohol, and the mass ratio is 1: 1;
embodiment 3 waterproof coating with VOCs content of 0 prepared from waste polystyrene and graphene polymer
The invention relates to a waterproof coating with VOCs content of 0, which is prepared by utilizing waste polystyrene and graphene macromolecules, and comprises the following raw materials:
waste polystyrene, polypropylene melt-blown material, mixed solvent, fumed silica, dispersing agent, graphene powder, mixed carbon four, accelerator, leveling agent and color master batch.
Specifically, in this embodiment, the raw materials include, by weight: 200 parts of waste polystyrene, 90 parts of polypropylene melt-blown material, 300 parts of mixed solvent, 30 parts of fumed silica, 25 parts of dispersing agent, 30 parts of graphene powder, 10 parts of mixed carbon, 120 parts of accelerator, 10 parts of leveling agent and 12 parts of color master batch;
the graphene powder is black in color, the fixed carbon content is more than or equal to 99.9%, the water content is less than or equal to 0.5%, the thickness is 0.55-1.2nm, the number of layers is 1-5, and the specific surface area is 554.364m 2/g;
the MFR range of the polypropylene melt-blown material is 15-35g/10min, the grain weight range is 30-40 grains/g, and the bulk density range is 45-55g/100 ml;
the mixed solvent consists of mechanical oil, aviation kerosene, dimethylbenzene and 12-hydroxy-9-octadecenoic acid in a mass ratio of 6:7:25: 3; the mechanical oil is preferably-3 # oil;
the mesh number of the fumed silica is 1000 meshes, the content of an effective component SiO2 is 99.8 percent, the BET surface area is 170 +/-20 m2/g, the carbon content is 0.7-1.3 percent by weight, the pH value is 3.7-4.7, the content of Al2O3 is less than or equal to 0.05 percent by weight, the content of Fe2O3 is less than or equal to 0.001 percent by weight, the content of TiO2 is less than or equal to 0.03 percent by weight, and the content of HCL is less than or equal to 0.1 percent by weight;
the dispersing agent is a mixture of styrene monomer, sodium dodecyl benzene sulfonate and sodium bisulfate, and the molar ratio is 10:5: 1;
the mixed C4 is a petroleum thermal cracking byproduct, wherein the olefin content is 15.6-25.5%, the alkyne content is 8.8-12.5%, and the water content is 0.1%;
the accelerator is a mixture of dibutyl phthalate and ethylene glycol, and the mass ratio of the dibutyl phthalate to the ethylene glycol is 15: 1;
the leveling agent is a mixture of isophorone and diacetone alcohol, and the mass ratio of the mixture to the diacetone alcohol is 1: 1.
Embodiment 4 a method for preparing a waterproof coating with a VOCs content of 0 by using waste polystyrene and graphene polymer
The invention relates to a preparation method of a waterproof coating with the VOCs content of 0, which is prepared by utilizing waste polystyrene and graphene macromolecules, and comprises the following steps: preparing raw materials, preparing graphene slurry, dissolving waste polystyrene, mixing electric pulses, and taking finished products out of a warehouse. The method specifically comprises the following steps:
(1) raw material preparation
The raw materials are weighed according to the weight parts of the waste polystyrene, the polypropylene melt-spray material, the mixed solvent, the fumed silica, the dispersing agent, the graphene powder, the mixed carbon four, the accelerator, the leveling agent and the color master in the embodiment for later use.
(2) Preparation of graphene slurry
Placing graphene powder, fumed silica and a dispersing agent in a colloid mill, adding sodium carbonate powder accounting for 0.1% of the total mass, uniformly mixing, carrying out fine grinding until D90 is less than or equal to 0.75 um;
adding a proper amount of soft water, and performing ultrasonic-ultraviolet synergistic treatment for 5min under nitrogen flow to perform refined dispersion to prepare graphene slurry;
the ultrasonic frequency is 58KHz, the power is 500W, the wavelength of ultraviolet light is 388nm, and the flow of nitrogen flow is 0.7L/min;
(3) dissolution of waste polystyrene
Cleaning and soaking the waste polystyrene and polypropylene melt-blown material in a cleaning solution at the temperature of 85 ℃ to remove solid impurities such as attached grease and other silt;
the washing and soaking liquid is prepared from the following components in parts by weight: 28 parts of mirabilite, 10 parts of sodium chloride, 1 part of sodium bicarbonate powder, 0.1 part of bismuth trioxide powder and 100 parts of deionized water.
Taking out, washing the waste polystyrene by using clear water to be neutral, naturally airing the waste polystyrene, dissolving the waste polystyrene in a mixed solvent at 86-95 ℃, adding mixed carbon four and color master, wherein in the embodiment, the color master is white titanium dioxide color master batch, or color master batches with other colors, stirring the mixture while adding the color master batches, and the stirring speed is 4500 rpm to obtain the waste polystyrene dissolving solution.
(4) Electric pulse mixing
And (3) adding the graphene slurry obtained in the step (3) into a waste polystyrene dissolving solution, adding an accelerator and a leveling agent at the temperature of 185 ℃, uniformly stirring, treating the mixture for 3-5min by adopting a pulsed electric field with the frequency of 18Hz and the electric field intensity of 20kV/cm, and stirring for 12min at the speed of 2500rad/min to obtain an initial product.
(5) Finished product warehouse-out
Dispersing the initial product uniformly by an ultrasonic system to obtain a final product, inspecting, packaging and delivering out of the warehouse.
1. The waterproof coating prepared by using the waste polystyrene and the graphene polymer has the characteristics of graphene and performances of corrosion resistance, explosion resistance, radiation resistance, impact resistance and the like.
2. The formulations of examples 1 to 3 of the present invention showed the following table as an index of the effect of the waterproof coating material prepared by the preparation method of example 4:
remarking: the drawing rate is the percentage of the brushing times of the drawing times generated during brushing to all the brushing times.
From the above data, it can be seen that:
in embodiments 1 to 3 of the present invention, the properties of the waterproof coating with a VOCs content of 0 prepared from waste polystyrene and graphene polymers are all greatly improved at the same time:
(1) according to the waterproof coating prepared by using the waste polystyrene and the graphene polymer, the content of VOCs is 0, and the solid content reaches 72.1-75.0%;
(2) the waterproof coating with the VOCs content of 0, which is prepared by utilizing waste polystyrene and graphene macromolecules, has the alkali treatment bonding strength of 2.0-2.2MPa and the wet base surface bonding strength of 1.8-2.3 MPa;
(3) the waterproof coating with the VOCs content of 0, which is prepared by utilizing the waste polystyrene and the graphene polymer, has excellent waterproof sealing property and impermeability, is waterproof at 0.3MPa for 172-187min, and can resist the water pressure of 0.87-0.92 MPa;
(4) the waterproof coating prepared from the waste polystyrene and the graphene polymer and having the VOCs content of 0 also has excellent low-temperature flexibility and no crack at the lowest temperature of-20 ℃.
All percentages used herein are weight percentages and all ratios described herein are mass ratios, unless otherwise indicated.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A waterproof coating with VOCs content of 0 prepared by utilizing waste polystyrene and graphene macromolecules is characterized in that,
the waterproof coating with the VOCs content of 0 and prepared by utilizing the waste polystyrene and the graphene polymer comprises the required raw materials, by weight, 300 parts of waste polystyrene 200-90 parts, 70-90 parts of polypropylene melt-spray material, 400 parts of mixed solvent 300-30 parts, 20-30 parts of fumed silica, 25-30 parts of dispersing agent, 25-30 parts of graphene powder, 10-20 parts of mixed carbon four, 90-120 parts of accelerant, 10-20 parts of flatting agent and 5-12 parts of color master batch;
the preparation method of the waterproof coating with the VOCs content of 0, which is prepared by utilizing the waste polystyrene and the graphene polymer, comprises the following steps:
(1) preparing raw materials;
(2) preparing graphene slurry: placing graphene powder, fumed silica and a dispersing agent in a colloid mill, adding sodium carbonate powder accounting for 0.1% of the total mass, uniformly mixing, carrying out refining grinding, and carrying out dispersing grinding until D90 is less than or equal to 0.75 mu m; adding a proper amount of soft water, and performing ultrasonic-ultraviolet synergistic treatment for 5min under nitrogen flow to perform refined dispersion to prepare graphene slurry;
the graphene powder comprises the following components: the fixed carbon content is more than or equal to 99.9 percent, the water content is less than or equal to 0.5 percent, the thickness is 0.55-1.2nm, the number of layers is 1-5, and the specific surface area is 554.364m2/g；
(3) Dissolving waste polystyrene: cleaning and soaking the waste polystyrene and polypropylene melt-blown material in a cleaning solution at the temperature of 85 ℃ to remove solid impurities such as attached grease and other silt;
the washing and soaking liquid is prepared from the following components in parts by weight: 28 parts of mirabilite, 10 parts of sodium chloride, 1 part of sodium bicarbonate powder, 0.1 part of bismuth trioxide powder and 100 parts of deionized water;
taking out, washing with clear water to neutrality, naturally drying, dissolving in 86-95 deg.C mixed solvent, adding mixed C4 and color master, stirring at 4500 rpm to obtain waste polystyrene solution;
(4) mixing electric pulses;
the waterproof coating can resist the water pressure of 0.87-0.92MPa, the bonding strength of alkali treatment is 2.0-2.2MPa, and the bonding strength of a wet base surface is 1.8-2.3 MPa.
2. The waterproof coating with the VOCs content of 0, which is prepared by utilizing the waste polystyrene and the graphene polymer, according to claim 1, is characterized in that,
the waterproof coating prepared from the waste polystyrene and the graphene polymer and having the VOCs content of 0 has the solid content of 72.1-75.0% and is waterproof at 0.3MPa for 172-187 min.
3. The waterproof coating with the VOCs content of 0, which is prepared by utilizing the waste polystyrene and the graphene polymer, according to claim 1, is characterized in that,
the mixed solvent consists of mechanical oil, aviation kerosene, dimethylbenzene and 12-hydroxy-9-octadecenoic acid in a mass ratio of 6:7:25: 3.
4. The waterproof coating with the VOCs content of 0, which is prepared by utilizing the waste polystyrene and the graphene polymer, according to claim 1, is characterized in that,
for the preparation of the graphene slurry, the ultrasonic frequency is 58KHz, the power is 500W, the wavelength of ultraviolet light is 388nm, and the flow of nitrogen flow is 0.7L/min.
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| CN201910180957.1A Active CN109943156B (en) | 2019-03-11 | 2019-03-11 | Waterproof coating prepared from waste polystyrene and graphene polymer and having VOCs content of 0 and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50159570A (en) * | 1974-06-17 | 1975-12-24 | ||
| CN86106496A (en) * | 1986-09-22 | 1987-03-25 | 曲俊杰 | The manufacture method of modified water-proof coating of polystyrene |
| CN1041377A (en) * | 1988-09-27 | 1990-04-18 | 孙怀瑜 | A kind of is the coating of matrix with the polystyrene |
| US6743828B1 (en) * | 2000-01-03 | 2004-06-01 | Harvey Katz | Reduction in polystyrene foams with dibasic esters |
| CN105694625A (en) * | 2016-02-05 | 2016-06-22 | 南京锎巴新材料科技有限公司 | Exterior wall waterproofing heat-insulating decorating integrated material and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3144277A1 (en) * | 2015-09-17 | 2017-03-22 | Korea Institute of Energy Research | Method of carbon coating on nanoparticle and carbon coated nanoparticle produced by the same |
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2019
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50159570A (en) * | 1974-06-17 | 1975-12-24 | ||
| CN86106496A (en) * | 1986-09-22 | 1987-03-25 | 曲俊杰 | The manufacture method of modified water-proof coating of polystyrene |
| CN1041377A (en) * | 1988-09-27 | 1990-04-18 | 孙怀瑜 | A kind of is the coating of matrix with the polystyrene |
| US6743828B1 (en) * | 2000-01-03 | 2004-06-01 | Harvey Katz | Reduction in polystyrene foams with dibasic esters |
| CN105694625A (en) * | 2016-02-05 | 2016-06-22 | 南京锎巴新材料科技有限公司 | Exterior wall waterproofing heat-insulating decorating integrated material and preparation method thereof |
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| CN109943156A (en) | 2019-06-28 |
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