CN115895414A - Preparation method of single-component polyurea anticorrosive heat-insulating coating - Google Patents
Preparation method of single-component polyurea anticorrosive heat-insulating coating Download PDFInfo
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Abstract
The invention belongs to the technical field of anticorrosive coatings, and particularly relates to a preparation method of a single-component polyurea anticorrosive heat-insulating coating. In order to improve the corrosion resistance and heat insulation performance of the anticorrosive paint, the invention mainly comprises the following steps: (1) Plugging aerogel pore channels by using a glass body formed by a boron series object at a high temperature; (2) 1,4-butanediol bis (4-aminobenzoate) is used as a key raw material of the single-component polyurea anticorrosive heat-insulating coating, the reaction speed with polyisocyanate is low, so that a foundation is laid for preparing polyurea prepolymer with more uniform molecular weight distribution and polyurea with high physical and chemical properties, in addition, 1,4-butanediol bis (4-aminobenzoate) does not contain ether bonds with poor thermal-oxidative aging resistance in molecules, the polyurea resin obtained by the reaction with polyisocyanate does not contain ether bonds, and the artificial accelerated aging resistance of a coating film formed by the single-component polyurea anticorrosive heat-insulating coating is further improved.
Description
Technical Field
The invention belongs to the technical field of anticorrosive coatings, and particularly relates to a preparation method of a single-component polyurea anticorrosive heat-insulating coating.
Background
The anticorrosive paint is widely applied to the fields of buildings, railways, bridges, petroleum, chemical industry, metallurgy and the like, at present, the annual corrosion economic loss of the world is about 10000 billion dollars, about 30 percent of steel is scrapped due to corrosion every year, and the development of the anticorrosive paint with high durability is an urgent task for the research and development of the current new material technology, and has very wide application prospect and huge economic benefit.
In the field of anticorrosive coatings, film-forming resin is a basic component and a key component of the coating and is the primary factor for determining the performance of the coating. At present, the corrosion-resistant coating is limited by the chemical properties of the traditional resin, and the application problems of lower corrosion resistance, shorter service life, more singleness and the like are faced, so that the application and development of the corrosion-resistant coating are greatly restricted, and therefore, the development of the corrosion-resistant coating with excellent corrosion resistance, long service life and multiple functions is a problem which is urgently needed to be solved in the field of the corrosion-resistant coating.
In addition, while the economy of China is rapidly developed, the energy consumption is increased, wherein the energy consumption of buildings is large. Along with the implementation of national energy-saving and environment-friendly industrial policies and the continuous improvement of energy-saving consciousness of people, building energy conservation becomes a problem to be solved urgently. The aerogel is a novel material with a nano porous structure, has a very good heat insulation effect, is a solid material which is the lightest and has the best heat insulation performance in the world at present, is called as a final heat insulation material, has the lowest heat conductivity and obvious heat insulation effect advantage, and has wide application prospect in the field of buildings. However, in the aerogel preparation insulating coating in-process, because liquid component or solvent can get into the pore structure of aerogel, this leads to the aerogel in the coating to lose most thermal-insulated function, consequently, handle the surface of aerogel in order to block up the pore, prevent that water or organic solvent can get into to reach the purpose that remains aerogel heat-proof quality, be the first solution problem of preparation aerogel insulating coating.
In summary, there is an urgent need in the art to develop a new method for preparing a single-component polyurea anticorrosive and heat-insulating coating.
Disclosure of Invention
In view of the technical problems stated above, the invention aims to provide a preparation method of a single-component polyurea anticorrosive heat-insulating coating, so as to solve the defects in the prior art. When the single-component polyurea anticorrosive heat-insulating coating prepared by the method is used in the fields of building external walls, steel structures, industrial pipelines and the like, excellent anticorrosive and heat-insulating effects can be achieved, and meanwhile, a coating film formed by the single-component polyurea anticorrosive heat-insulating coating has excellent aging resistance and good physical properties.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a single-component polyurea anticorrosive heat-insulating coating comprises the following steps:
step 1, mixing phosphoric acid aqueous solution, boric acid and deionized water, and heating for reaction to obtain boron phosphate aqueous solution;
step 2, slowly adding the aerogel slurry into a boron phosphate aqueous solution under the stirring condition, uniformly dispersing, drying, and roasting under the nitrogen protection condition to obtain boron phosphate treated aerogel powder;
and 3, mixing and stirring 1,4-butanediol bis (4-aminobenzoate), a solvent, aerogel powder treated by boron phosphate and polyisocyanate for reaction, adding a latent curing agent for reaction, cooling and discharging to obtain the single-component polyurea anticorrosive heat-insulating coating.
Further, the weight concentration of the phosphoric acid aqueous solution in the step 1 is 85%, and the boric acid has a chemical formula of H 3 BO 3 White crystalline powder with a content of 99.5%; the molar ratio of phosphoric acid to boric acid in the phosphoric acid aqueous solution is 1-1.1: 1, preferably 1 to 1.08:1, more preferably 1 to 1.05:1;
the weight ratio of the deionized water to the (phosphoric acid aqueous solution + boric acid) is 0.5-2: 1, preferably 0.5 to 1.5:1, more preferably 0.5 to 1.0:1.
further, the heating temperature in the step 1 is 85-95 ℃, the time is 0.5-3 h,
further, the aerogel slurry in step 2 is a dispersion liquid of aerogel powder, and is a paste/slurry material prepared by dispersing hydrophobic aerogel powder in an aqueous medium, for example, an aerogel slurry with a product model AG-S, which is produced and sold by seiko cheng materials llc in shanxi yang, has an aerogel solid content of 10%, a thermal conductivity of 0.018-0.022W/(M.K) after drying, and a particle size of 15-50 μm.
Further, the weight ratio of the aerogel slurry to the aqueous solution of boron phosphate in the step 2 is 1-15: 1, preferably 1 to 10:1, more preferably 1 to 5:1.
further, the drying temperature in the step 2 is 100-120 ℃, the drying time is 12-24 h, the roasting temperature is 450-600 ℃, and the baking time is 4-8 h.
Further, 1,4-butanediol bis (4-aminobenzoate) in step 3 is an aromatic diamine containing ester bonds, has a functionality of 2, a molecular weight of 328, and a chemical structural formula of:
Further, the solvent in the step 3 is one or more of ethyl acetate, dimethyl carbonate, diethyl carbonate, xylene and ethylene glycol dimethyl ether.
Further, the polyisocyanate in the step 3 is one or more of toluene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate and hexamethylene diisocyanate trimer.
Further, the latent curing agent in the step 3 is an oxazolidine latent curing agent, and the structural formula of the latent curing agent is as follows:
Further, in the step 3, the weight parts of 1,4-butanediol bis (4-aminobenzoate), the solvent, the boron phosphate treated aerogel powder, the polyisocyanate and the latent curing agent are 50 to 80 parts: 5-20 parts of: 1-10 parts of: 30-60 parts of: 5-15 parts.
Further, the temperature of the stirring reaction in the step 3 is 60-80 ℃ and the time is 0.5-20 h, and the temperature of the reaction is 30-60 ℃ and the time is 0.5-1.0 h.
Compared with the prior art, the invention has the following advantages:
1. the 1,4-butanediol bis (4-aminobenzoate) used in the invention is a key raw material of the single-component polyurea anticorrosive heat-insulating coating, the activity of an amino group in a molecular structure of the chain extender is far lower than that of an amino group in polyether amine due to the existence of a side electron-withdrawing group, the chain extender is a steric-hindrance low-activity diamino chain extender, the reaction speed is low when the chain extender reacts with polyisocyanate, and the chain extender has the gel time of 30 minutes, which lays a foundation for the preparation of polyurea prepolymers with more uniform molecular weight distribution and polyurea with high physical and chemical properties, so that a coating film formed by the single-component polyurea anticorrosive heat-insulating coating synthesized by the method has excellent anticorrosive properties;
2. according to the invention, the glass body formed when the boron series object is at high temperature is used for plugging the aerogel pore channel, so that the problem that water or an organic solvent enters the aerogel pore channel to cause the aerogel pore channel to lose the heat insulation function is effectively solved, and the heat insulation performance is kept when the treated aerogel powder is used as a filler for preparing the coating, therefore, a coating film formed by the single-component polyurea anticorrosive heat insulation coating synthesized by the method has a lower heat conductivity coefficient;
3. the polyurea resin used in the invention is taken as a film forming substance, and a structure similar to a chelate is formed in the whole polyurea polymer network from the view point of a molecular structure, so that the molecular structure is more stable. In addition, the carbamido structure in the polyurea structure has higher thermal stability, so that a coating film formed by the single-component polyurea anticorrosive heat-insulating coating synthesized by the method has excellent artificial accelerated aging resistance, physical and mechanical properties and substrate adhesion;
4. the 1,4-butanediol bis (4-aminobenzoate) molecular mechanism used in the invention does not contain ether bonds with poor thermal-oxidative aging resistance, and the polyurea resin obtained by reacting with polyisocyanate does not contain ether bonds in a macromolecular structure, so that the aging resistance of a coating film formed by the single-component polyurea anticorrosive heat-insulating coating synthesized by the method is further improved.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments. It will be appreciated that other embodiments are contemplated and may be made without departing from the scope or spirit of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense.
Unless otherwise indicated, all numbers expressing feature sizes, quantities, and physical and chemical properties used in the specification and claims are to be understood as being modified in all instances by the term "about". Accordingly, unless indicated to the contrary, the numerical parameters set forth in the foregoing specification and attached claims are approximations that can be suitably varied by those skilled in the art in seeking to obtain the desired properties utilizing the teachings disclosed herein. The use of numerical ranges by endpoints includes all numbers within that range and any range within that range, for example, 1 to 5 includes 1, 1.1, 1.3, 1.5, 2, 2.75, 3, 3.80, 4, and 5, and the like.
The present invention will be described in more detail with reference to examples. It should be noted that the description and examples are intended to facilitate the understanding of the invention, and are not intended to limit the invention. The scope of the invention is defined by the appended claims.
Example 1
A preparation method of the single-component polyurea anticorrosive heat-insulating coating comprises the following steps:
(1) Adding 115.3 g of 85% phosphoric acid aqueous solution, 62 g of boric acid and 177.3 g of deionized water into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, heating to 95 ℃, stirring for reaction for 3.0 hours, and cooling to obtain an aqueous solution of boron phosphate with the boron phosphate content of 45.1%;
(2) Adding 50 g of boron phosphate aqueous solution into a beaker filled with stirring slurry, slowly adding 50 g of aerogel slurry into the beaker under the stirring condition, dispersing for 1.5 hours, then drying in an oven at 100 ℃ for 24 hours, and roasting at 450 ℃ for 8 hours under the nitrogen protection condition after drying to obtain the boron phosphate treated aerogel powder.
(3) Adding 50 parts by weight of 1,4-butanediol bis (4-aminobenzoate), 20 parts by weight of dimethyl carbonate, 10 parts by weight of boron phosphate treated aerogel powder and 40 parts by weight of isophorone diisocyanate into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, mixing, stirring and reacting for 0.5 hour at 80 ℃, adding 5 parts by weight of latent curing agent and reacting for 0.5 hour at 60 ℃, cooling and discharging to obtain the polyurea anticorrosive heat-insulating coating.
Example 2
A preparation method of the single-component polyurea anticorrosive heat-insulating coating comprises the following steps:
(1) Adding 121 g of 85% phosphoric acid, 62 g of boric acid and 91.5 g of deionized water into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, heating to 85 ℃, stirring for reaction for 0.5 hour, and cooling to obtain an aqueous solution of boron phosphate with the boron phosphate content of 60.0%;
(2) Adding 50 g of boron phosphate aqueous solution into a beaker filled with stirring slurry, slowly adding 250 g of aerogel slurry into the beaker under the stirring condition, stirring for 0.5 hour, then drying in a 120 ℃ oven for 12 hours, and roasting at 600 ℃ for 4 hours under the nitrogen protection condition to obtain the boron phosphate treated aerogel powder.
(3) Adding 80 parts by weight of 1,4-butanediol bis (4-aminobenzoate), 5 parts by weight of ethyl acetate, 1 part by weight of boron phosphate treated aerogel powder and 55 parts by weight of toluene diisocyanate into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, mixing, stirring and reacting at 60 ℃ for 2 hours, adding 15 parts by weight of latent curing agent, reacting at 30 ℃ for 1.0 hour, cooling and discharging to obtain the single-component polyurea anticorrosive heat-insulating coating.
Example 3
A preparation method of a single-component polyurea anticorrosive heat-insulating coating comprises the following steps:
(1) Adding 121 g of 85% phosphoric acid, 62 g of boric acid and 183 g of deionized water into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, heating to 90 ℃, stirring for reaction for 2.0 hours, and cooling to obtain an aqueous solution of boron phosphate with the boron phosphate content of 45%;
(2) Adding 50 g of boron phosphate aqueous solution into a beaker filled with stirring slurry, slowly adding 150 g of aerogel slurry into the beaker under the stirring condition, stirring for 1.0 hour, then drying in a 120 ℃ oven for 24 hours, and roasting at 500 ℃ for 6 hours under the nitrogen protection condition to obtain the boron phosphate treated aerogel powder.
(3) Adding 60 parts by weight of 1,4-butanediol bis (4-aminobenzoate), 10 parts by weight of ethylene glycol dimethyl ether, 5 parts by weight of boron phosphate treated aerogel powder and 60 parts by weight of dicyclohexylmethane diisocyanate into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, mixing, stirring and reacting at 70 ℃ for 1.0 hour, adding 10 parts by weight of latent curing agent, reacting at 50 ℃ for 1.0 minute, cooling and discharging to obtain the single-component polyurea anticorrosive heat-insulating coating.
Example 4
A preparation method of a single-component polyurea anticorrosive heat-insulating coating comprises the following steps:
(1) Adding 115.3 g of 85% phosphoric acid, 62 g of boric acid and 132.8 g of deionized water into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, heating to 95 ℃, stirring for reaction for 3.0 hours, and cooling to obtain an aqueous solution of boron phosphate with the boron phosphate content of 51.6%;
(2) Adding 50 g of boron phosphate aqueous solution into a beaker filled with stirring slurry, slowly adding 200 g of aerogel slurry into the beaker under the stirring condition, stirring for 1.5 hours, then drying in a 110 ℃ oven for 18 hours, and roasting at 550 ℃ for 5 hours under the nitrogen protection condition to obtain the boron phosphate treated aerogel powder.
(3) Adding 50 parts by weight of 1,4-butanediol bis (4-aminobenzoate), 10 parts by weight of diethyl carbonate, 10 parts by weight of boron phosphate treated aerogel powder and 30 parts by weight of hexamethylene diisocyanate into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, mixing, stirring and reacting at 80 ℃ for 1.0 hour, adding 5 parts by weight of latent curing agent to react at 50 ℃ for 0.5 hour, cooling and discharging to obtain the polyurea anticorrosive heat-insulating coating.
Example 5
A preparation method of a single-component polyurea anticorrosive heat-insulating coating comprises the following steps:
(1) Adding 115.3 g of 85% phosphoric acid, 62 g of boric acid and 177.3 g of deionized water into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, heating to 95 ℃, stirring for reaction for 3.0 hours, and cooling to obtain an aqueous solution of boron phosphate with the boron phosphate content of 45.1%;
(2) Adding 50 g of boron phosphate aqueous solution into a beaker filled with stirring slurry, slowly adding 100 g of aerogel slurry into the beaker under the stirring condition, stirring for 0.5 hour, then drying in a 120 ℃ oven for 24 hours, and roasting at 450 ℃ for 8 hours under the nitrogen protection condition after drying to obtain the boron phosphate treated aerogel powder.
(3) Adding 80 parts by weight of 1,4-butanediol bis (4-aminobenzoate), 5 parts by weight of xylene, 2 parts by weight of boron phosphate treated aerogel powder and 53 parts by weight of toluene diisocyanate into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, mixing, stirring at 70 ℃ for reacting for 2 hours, adding 12 parts by weight of a latent curing agent, reacting at 60 ℃ for 1.0 minute, cooling and discharging to obtain the single-component polyurea anticorrosive heat-insulating coating.
Example 6
A preparation method of a single-component polyurea anticorrosive heat-insulating coating comprises the following steps:
(1) Adding 124.5 g of 85 percent phosphoric acid aqueous solution, 62 g of boric acid and 279.75 g of deionized water into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, heating to 95 ℃, stirring for reaction for 3.0 hours, and cooling to obtain a boron phosphate aqueous solution with the boron phosphate content of 34.3 percent;
(2) Adding 50 g of boron phosphate aqueous solution into a beaker filled with stirring slurry, slowly adding 500 g of aerogel slurry under the stirring condition, dispersing for 1.5 hours, then drying in an oven at 100 ℃ for 24 hours, and roasting at 450 ℃ for 8 hours under the nitrogen protection condition after drying to obtain the boron phosphate treated aerogel powder.
(3) Adding 50 parts by weight of 1,4-butanediol bis (4-aminobenzoate), 20 parts by weight of dimethyl carbonate, 10 parts by weight of boron phosphate treated aerogel powder and 40 parts by weight of isophorone diisocyanate into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, mixing, stirring and reacting for 0.5 hour at 80 ℃, adding 5 parts by weight of latent curing agent and reacting for 0.5 hour at 60 ℃, cooling and discharging to obtain the polyurea anticorrosive heat-insulating coating.
Example 7
A preparation method of a single-component polyurea anticorrosive heat-insulating coating comprises the following steps:
(1) Adding 126.8 g of 85 percent phosphoric acid aqueous solution, 62 g of boric acid and 377.6 g of deionized water into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, heating to 95 ℃, stirring for reaction for 3.0 hours, and cooling to obtain a boron phosphate aqueous solution with the boron phosphate content of 28.2 percent;
(2) Adding 50 g of boron phosphate aqueous solution into a beaker filled with stirring slurry, slowly adding 750 g of aerogel slurry into the beaker under the stirring condition, dispersing for 1.5 hours, then drying in an oven at 100 ℃ for 24 hours, and roasting at 450 ℃ for 8 hours under the nitrogen protection condition after drying to obtain the boron phosphate treated aerogel powder. (3) Adding 50 parts by weight of 1,4-butanediol bis (4-aminobenzoate), 20 parts by weight of dimethyl carbonate, 10 parts by weight of boron phosphate treated aerogel powder and 40 parts by weight of isophorone diisocyanate into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, mixing, stirring and reacting for 0.5 hour at 80 ℃, adding 5 parts by weight of latent curing agent and reacting for 0.5 hour at 60 ℃, cooling and discharging to obtain the polyurea anticorrosive heat-insulating coating.
Comparative example 1
50 parts by weight of 1,4-butanediol bis (4-aminobenzoate), 20 parts by weight of dimethyl carbonate, 10 parts by weight of aerogel powder and 40 parts by weight of isophorone diisocyanate are added into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device to be mixed and stirred at 80 ℃ for reaction for 0.5 hour, 5 parts by weight of latent curing agent is added to react at 60 ℃ for 0.5 hour, and the mixture is cooled and discharged to obtain the single-component polyurea anticorrosive heat-insulating coating.
Comparative example 2
(1) Adding 115.3 g of 85% phosphoric acid aqueous solution, 62 g of boric acid and 177.3 g of deionized water into a four-neck flask provided with a stirrer, a thermometer, a nitrogen inlet and a reflux device, heating to 95 ℃, stirring for reaction for 3.0 hours, and cooling to obtain an aqueous solution of boron phosphate with the boron phosphate content of 45.1%;
(2) Adding 50 g of boron phosphate aqueous solution into a beaker filled with stirring slurry, slowly adding 50 g of aerogel slurry into the beaker under the stirring condition, dispersing for 1.5 hours, then drying in an oven at 100 ℃ for 24 hours, and roasting at 450 ℃ for 8 hours under the nitrogen protection condition after drying to obtain the boron phosphate treated aerogel powder.
(3) In a four-neck flask equipped with a stirrer, a thermometer, a nitrogen inlet and a reflux device, 50 parts by weight of polytetrahydrofuran ether glycol PTMG-650 (for example, PTMG-650 which is manufactured and sold by Pasteur Germany and has a molecular weight of 650 and a functionality of 2), 20 parts by weight of dimethyl carbonate, 10 parts by weight of boron phosphate treated aerogel powder and 40 parts by weight of isophorone diisocyanate are mixed and reacted at 80 ℃ for 0.5 hour under stirring, 5 parts by weight of latent curing agent is added to react at 60 ℃ for 0.5 hour, and the mixture is cooled and discharged to obtain the one-component polyurea anticorrosive heat-insulating coating.
The properties of the single-component polyurea anticorrosive and heat-insulating coatings obtained in each of examples 1 to 7 and comparative examples 1 to 2 were measured and the measurement results are shown in table 1. The specific measurement methods for the relevant properties are as follows:
(1) Adhesion force
The test is carried out according to the relevant test method in GB/T5210-2006 adhesion test by paint and varnish pulling method. Wherein, if the adhesive force is more than or equal to 4MPa, the general industrial application requirements of the steel structure anticorrosive coating material for the building are met; if the adhesive force is greater than or equal to 7MPa, the adhesive force performance of the steel structure anticorrosive coating material for the building is considered to be excellent.
(2) Acid resistance
The tests were carried out according to the relevant test methods in GB/T9274-1988, determination of the resistance of pigmented paints and varnishes to liquid media. If the acid resistance is greater than or equal to 96h, the general industrial application requirements of the steel structure anticorrosive paint material for the building are met; if the acid resistance is more than or equal to 168h, the acid resistance of the steel structure anticorrosive paint for buildings is considered to be excellent.
(3) Salt tolerance
The tests were carried out according to the relevant test methods in GB/T9274-1988, determination of the resistance of pigmented paints and varnishes to liquid media. If the salt resistance is more than or equal to 120h, the general industrial application requirements of the steel structure anticorrosive paint material for the building are met; if the salt resistance is more than or equal to 240h, the salt water resistance of the anticorrosive coating for the steel structure for construction is considered to be excellent.
(4) Alkali resistance
The tests were carried out according to the relevant test methods in GB/T9274-1988, determination of the resistance of pigmented paints and varnishes to liquid media. If the alkali resistance is more than or equal to 120h, the general industrial application requirements of the building steel structure anticorrosive paint material are met; and if the alkali resistance is more than or equal to 240h, the building steel structure anticorrosive paint is considered to have excellent alkali resistance.
(5) Resistance to artificial aging
The test was carried out according to the relevant test methods in GB/T1865-2009 paint and varnish Artificial weathering and Artificial radiation Exposure. If the artificial aging resistance is more than or equal to 500h, the general industrial application requirements of the steel structure anticorrosive paint material for the building are met; if the artificial aging resistance is more than or equal to 1000h, the artificial aging resistance of the steel structure anticorrosive paint for the building is considered to be excellent.
(6) Coefficient of thermal conductivity
The test is carried out according to the relevant test method in GB/T10295-2008 heat-insulating material steady-state thermal resistance and relevant characteristic measuring heat flow meter method. If the thermal conductivity coefficient is less than or equal to 0.15 w/m.K, the thermal insulation coating material is considered to meet the general industrial application requirements of the thermal insulation coating material for buildings; if the thermal conductivity is 0.08 w/m.K or less, the heat insulating coating for buildings is considered to have excellent heat insulating performance.
Table 1 shows the performance test results of the single-component polyurea anticorrosive and heat-insulating coating obtained in examples 1 to 7 according to the present invention. The technical requirement refers to the technical standard which the single-component polyurea waterproof heat-insulating coating needs to meet according to the relevant test method.
TABLE 1 Performance test results of the one-component polyurea anticorrosive and heat-insulating coating obtained in examples 1 to 7
As can be seen from table 1, the above examples 1 to 7 confirm that the one-component polyurea anticorrosive and heat-insulating coating prepared by the method according to the present invention can obtain an anticorrosive and heat-insulating coating film having good corrosion resistance, good artificial accelerated aging resistance, and heat-insulating properties.
The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the purpose of limiting the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention, and the technical contents of the present invention as claimed are all described in the claims.
Claims (12)
1. The preparation method of the single-component polyurea anticorrosive heat-insulating coating is characterized by comprising the following steps of:
step 1, mixing a phosphoric acid aqueous solution, boric acid and deionized water, and heating for reaction to obtain a boron phosphate aqueous solution;
step 2, slowly adding the aerogel slurry into a boron phosphate aqueous solution under the stirring condition, uniformly dispersing, drying, and roasting under the nitrogen protection condition to obtain boron phosphate treated aerogel powder;
and 3, mixing and stirring 1,4-butanediol bis (4-aminobenzoate), a solvent, aerogel powder treated by boron phosphate and polyisocyanate for reaction, adding a latent curing agent for reaction, cooling and discharging to obtain the single-component polyurea anticorrosive heat-insulating coating.
2. The preparation method of the one-component polyurea anticorrosive heat-insulating coating according to claim 1, wherein the weight concentration of the phosphoric acid aqueous solution in the step 1 is 85%, and the molar ratio of phosphoric acid to boric acid in the phosphoric acid aqueous solution is 1-1.1: 1, the weight ratio of the deionized water to the (phosphoric acid aqueous solution + boric acid) is 0.5-2: 1.
3. the preparation method of the one-component polyurea anti-corrosion heat-insulation coating according to claim 1, wherein the heating temperature in the step 1 is 85-95 ℃ and the heating time is 0.5-3 h.
4. The preparation method of the one-component polyurea anticorrosive and heat-insulating coating according to claim 1, wherein the aerogel slurry in the step 2 is a dispersion liquid of aerogel powder, and is a paste/slurry material prepared by dispersing hydrophobic aerogel powder in an aqueous medium.
5. The preparation method of the one-component polyurea anticorrosive heat-insulating coating according to claim 1, wherein the weight ratio of the aerogel slurry to the aqueous solution of boron phosphate in the step 2 is 1-15: 1.
6. the preparation method of the one-component polyurea anticorrosive and heat-insulating coating according to claim 1, wherein the drying temperature in the step 2 is 100-120 ℃ and the time is 12-24 h, and the baking temperature is 450-600 ℃ and the time is 4-8 h.
7. The preparation method of the one-component polyurea anticorrosive heat-insulating coating according to claim 1, wherein in the step 3, 1,4-butanediol bis (4-aminobenzoate) is an aromatic diamine containing ester bonds, the functionality is 2, the molecular weight is 328, and the chemical structural formula is as follows:
8. the preparation method of the single-component polyurea anticorrosive heat-insulating coating as claimed in claim 1, wherein the solvent in the step 3 is one or more of ethyl acetate, dimethyl carbonate, diethyl carbonate, xylene and ethylene glycol dimethyl ether.
9. The method for preparing the single-component polyurea anticorrosive heat-insulating coating according to claim 1, wherein the polyisocyanate in the step 3 is one or more of toluene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, dicyclohexylmethane diisocyanate and hexamethylene diisocyanate trimer.
10. The preparation method of the one-component polyurea anticorrosive heat-insulating coating according to claim 1, wherein the latent curing agent in the step 3 is an oxazolidine latent curing agent, and the structural formula of the latent curing agent is as follows:
11. the preparation method of the one-component polyurea anticorrosive heat-insulating coating according to claim 1, wherein in the step 3, the weight parts ratio of 1,4-butanediol bis (4-aminobenzoate), the solvent, the boron phosphate treated aerogel powder, the polyisocyanate and the latent curing agent is 50-80: 5-20 parts of: 1-10 parts of: 30-60 parts of: 5 to 15 portions.
12. The preparation method of the one-component polyurea anticorrosive and heat-insulating coating according to claim 1, wherein the stirring reaction in the step 3 is carried out at a temperature of 60-80 ℃ for 0.5-20 h, and the reaction is carried out at a temperature of 30-60 ℃ for 0.5-1.0 h.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178005A (en) * | 2014-08-08 | 2014-12-03 | 大连怿文新材料科技发展有限公司 | Single-component heavy-duty corrosion-resistant polyurea for buried pipeline and preparation method of polyurea |
| CN105418881A (en) * | 2015-12-29 | 2016-03-23 | 哈尔滨工业大学 | Polyurea foam material and preparation method thereof |
| CN107267006A (en) * | 2016-04-08 | 2017-10-20 | 南京唯才新能源科技有限公司 | A kind of aeroge water-borne heat-insulating fireproof coating and preparation method thereof |
| CN107266997A (en) * | 2016-04-08 | 2017-10-20 | 南京唯才新能源科技有限公司 | A kind of aeroge Water-based thermal insulation coating and preparation method thereof |
| CN108350142A (en) * | 2015-10-16 | 2018-07-31 | 巴斯夫欧洲公司 | The method for preparing xerogel and aeroge based on isocyanates using inorganic acid |
| CN109280469A (en) * | 2018-05-22 | 2019-01-29 | 青岛格林沃德新材料科技有限公司 | A kind of high intensity one-component polyureas and preparation method thereof |
| CN110240174A (en) * | 2019-06-12 | 2019-09-17 | 江西师范大学 | A kind of simple preparation method of boron phosphate |
| KR102182305B1 (en) * | 2020-03-16 | 2020-11-24 | 주식회사 가나실업 | Resin compositions of high quality polyurea that provide function of waterproofing and insulation on the roof, and coating method using the same |
| CN113150663A (en) * | 2021-05-07 | 2021-07-23 | 华阳新材料科技集团有限公司 | Preparation method of water-based polyurea-based expanded steel structure fireproof coating |
| CN114045097A (en) * | 2021-12-17 | 2022-02-15 | 华阳新材料科技集团有限公司 | Preparation method of single-component polyurea waterproof heat-insulation coating |
| CN114920920A (en) * | 2022-07-05 | 2022-08-19 | 山西省建筑科学研究院有限公司 | Process for the preparation of sterically hindered amine-terminated polyethers and process for the preparation of products derived therefrom |
-
2022
- 2022-12-01 CN CN202211577029.7A patent/CN115895414B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178005A (en) * | 2014-08-08 | 2014-12-03 | 大连怿文新材料科技发展有限公司 | Single-component heavy-duty corrosion-resistant polyurea for buried pipeline and preparation method of polyurea |
| CN108350142A (en) * | 2015-10-16 | 2018-07-31 | 巴斯夫欧洲公司 | The method for preparing xerogel and aeroge based on isocyanates using inorganic acid |
| CN105418881A (en) * | 2015-12-29 | 2016-03-23 | 哈尔滨工业大学 | Polyurea foam material and preparation method thereof |
| CN107267006A (en) * | 2016-04-08 | 2017-10-20 | 南京唯才新能源科技有限公司 | A kind of aeroge water-borne heat-insulating fireproof coating and preparation method thereof |
| CN107266997A (en) * | 2016-04-08 | 2017-10-20 | 南京唯才新能源科技有限公司 | A kind of aeroge Water-based thermal insulation coating and preparation method thereof |
| CN109280469A (en) * | 2018-05-22 | 2019-01-29 | 青岛格林沃德新材料科技有限公司 | A kind of high intensity one-component polyureas and preparation method thereof |
| CN110240174A (en) * | 2019-06-12 | 2019-09-17 | 江西师范大学 | A kind of simple preparation method of boron phosphate |
| KR102182305B1 (en) * | 2020-03-16 | 2020-11-24 | 주식회사 가나실업 | Resin compositions of high quality polyurea that provide function of waterproofing and insulation on the roof, and coating method using the same |
| CN113150663A (en) * | 2021-05-07 | 2021-07-23 | 华阳新材料科技集团有限公司 | Preparation method of water-based polyurea-based expanded steel structure fireproof coating |
| CN114045097A (en) * | 2021-12-17 | 2022-02-15 | 华阳新材料科技集团有限公司 | Preparation method of single-component polyurea waterproof heat-insulation coating |
| CN114920920A (en) * | 2022-07-05 | 2022-08-19 | 山西省建筑科学研究院有限公司 | Process for the preparation of sterically hindered amine-terminated polyethers and process for the preparation of products derived therefrom |
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