CN109777269B - Single-component polyurea coating for water, electricity and water utilization and preparation method thereof - Google Patents
Single-component polyurea coating for water, electricity and water utilization and preparation method thereof Download PDFInfo
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Abstract
According to the water-electricity-water-utilization single-component polyurea coating and the preparation method thereof, diisocyanate, polyether polyol and hydrogenated epoxy resin are used as main components, and some auxiliaries are added to form the liquid environment-friendly waterproof coating.
Description
Technical Field
The invention relates to a polyurea coating, and in particular relates to a single-component polyurea coating for hydroelectric water utilization and a preparation method thereof.
Background
Since the establishment of new China, China newly builds a large number of water-power hydraulic engineering, and the water-power hydraulic engineering plays great social and economic benefits in the aspects of hydroelectric power generation, flood control and disaster reduction, industrial and agricultural water use, shipping, aquatic products, environmental travel and the like. However, like other buildings, the hydraulic concrete buildings are easy to decay and age, even to be damaged, under the alternating and continuous action of load and severe environment after being built and put into operation. Meanwhile, due to the fact that manual construction is not standardized, problems exist in the building, the earthquake influence exists, and the like, and the comprehensive effect of various adverse factors such as the change of operation conditions and the increase of operation years is added, a large number of hydraulic concrete buildings are damaged to different degrees, and the safe operation of the engineering is seriously influenced in some cases. Therefore, the correct selection of the repair technical measures, the repair materials and the construction method is an effective work for prolonging the service life of the building.
Among the present waterproof materials, polyurea has high tensile strength, tear strength, water resistance, acid and alkali resistance, and the like, and is favored by the market. The polyurea material is classified into aromatic polyurea, conventional aliphatic polyurea and polyaspartate polyurea according to the type of polyurea material, and the market share is 70%, 5% and 25%, respectively. Polyurea used in water conservancy is mainly sprayed by aromatic materials, but has the defects of easy yellowing, poor adhesion, need of special spraying equipment, strict requirements on protective measures of constructors and limitation on further development of the sprayed polyurea in the aspect of water conservancy engineering due to the existence of a plurality of problems.
At present, aiming at the characteristic that the adhesion performance of polyurea is general, a large number of modification experiments are carried out, and the modification of the two-component polyurea is mainly carried out. For example, epoxy is used as a binder to be matched with polyurea for coating, and the scheme can increase the construction process procedure and make the construction process complicated; epoxy resin is used as an additive and added into one of the A/R components to be physically mixed, so that the adhesion property of the polyurea coating is improved, the coating property is unstable due to defects, and the process is added in the formula modulation process; the epoxy resin is used for modifying the R component amine resin in the polyurea, so that the adhesion performance and the mechanical property can be enhanced, but the method has certain influence on the activity of an amine group, increases the difficulty of closing the amine group in the amine resin, and is not used in the single-component polyurea; in addition, the modified polyurea material has poor weather resistance, is easy to yellow and increases the aging rate. The epoxy resin is used for modifying polyurea to improve the adhesion and mechanical properties, and is only a test in the aspect of two-component polyurea.
In recent years, a single-component polyurea coating begins to appear in the market, the component A and the component B with the end capping are mixed in advance according to a proportion, the materials do not need to be mixed on site, the coating is directly used, and the manual blade coating operation is simple and convenient. The single-component polyurea is mainly cured by moisture, the reaction activity is mild, the gelling time is longer than that of spraying, the two-component manual polyurea time is longer, and meanwhile, the formed paint film has the characteristics of good compactness, good anti-permeability performance, good adhesion effect and the like, so that the single-component polyurea coating film has better and wider adaptability.
However, most of the commercially available one-component polyurea coating products and techniques are foreign, such as the American cisternate company, the American Siberger company, and the like. The research is few in China, and the polyurethane is in the starting stage, even the polyurethane and other useful substances in the market are called single-component polyurea, so that the performance of the polyurea can not meet the requirements of hydropower engineering, and the market disorder and the resource waste are caused. The requirements on the performance of waterproof materials in the aspect of hydropower and water conservancy engineering are high, and national water conservancy engineering is increasing the strength construction, and under the alternating and continuous action of severe environment, the problems of decay and aging of concrete and yellowing, aging and falling off and the like in the action process of the waterproof materials are caused.
The obtained paint film has better compactness and adhesion performance than those of a bi-component polyurea coating due to inherent characteristics of the mono-component polyurea coating, but the performance requirement of hydropower on the aspect of the performance is higher, and how to further improve the performance of the mono-component polyurea coating is obviously a very meaningful research work. However, there are certain differences in the raw material compositions of the two-component polyurea coating and the single-component polyurea coating, and it is a creative work how to perform epoxy modification on the single-component polyurea according to the differences and by combining the environmental characteristics of engineering application, so as to obtain a hydropower water utilization single-component polyurea coating meeting the requirements.
Disclosure of Invention
The invention aims to overcome the problems and provides a water-electricity-water-utilization single-component polyurea coating and a preparation method thereof.
The invention relates to a single-component polyurea coating for hydroelectric water utilization, which comprises the following components in parts by weight:
the hydroelectric water utilizes the single-component polyurea coating to prepare according to the formula proportion by adopting a conventional preparation method or a corresponding product operation method, but the preparation method and the optimized scheme provided by the invention can be used for obtaining a final product with higher performance.
The water and electricity utilization single-component polyurea coating is further optimized as follows:
the paint comprises the following components in parts by weight:
the water and electricity utilization single-component polyurea coating is further optimized as follows:
the polyether polyol is at least one of polyether PPG1000, polyether PPG2000, polyether 3050 and polyether 330N, the raw materials are provided by Shandong Lanxingdong chemical industry, the main component is a propylene oxide condensate containing polyhydroxy, wherein, for example, 1000 represents molecular weight and is an important raw material component of the polyurea prepolymer.
The water and electricity utilization single-component polyurea coating is further optimized as follows:
the chain extender is 1, 4-butanediol and is mainly used for reacting with isocyanate to increase the molecular weight of a prepolymer, and finally the mechanical property of the single-component polyurea coating is improved.
The water and electricity utilization single-component polyurea coating is further optimized as follows:
wherein the diisocyanate is an aliphatic isocyanate.
The water and electricity utilization single-component polyurea coating is further optimized as follows:
wherein the aliphatic isocyanate is one of isophorone diisocyanate, hexamethylene diisocyanate and 4, 4' -dicyclohexylmethane diisocyanate.
The water and electricity utilization single-component polyurea coating is further optimized as follows:
the hydrogenated bisphenol A epoxy resin can be a conventional product on the market, can also be prepared by a laboratory and according to the preparation method provided by the application, and mainly comprises hydrogenated bisphenol A (H-BPA) and epichlorohydrin.
The water and electricity utilization single-component polyurea coating is further optimized as follows:
wherein the diluent is one or the combination of acetone and ethyl acetate.
The water and electricity utilization single-component polyurea coating is further optimized as follows:
wherein the blocked amine curing agent is oxazolidine curing agent.
The water and electricity utilization single-component polyurea coating is further optimized as follows:
wherein the oxazolidine curing agent is one or a combination of more of 2-isopropyl-3-hydroxyethyl-1, 3-oxazolidine, 3-hydroxyethyl-1, 3-oxazolidine and 3-butyl-2- (1-ethylpentyl) oxazolidine.
The water and electricity utilization single-component polyurea coating is further optimized as follows:
wherein the plasticizer is one of dibutyl phthalate, diethyl phthalate and dioctyl phthalate.
The water and electricity utilization single-component polyurea coating is further optimized as follows:
wherein the catalyst 1 is a quaternary ammonium salt catalyst; catalyst 2 and catalyst 3 are oligomeric coordination hybrid organometallic catalysts, each of which is one of CUCAT-H, CUCAT-HA, CUCAT-PD, and BCAT-20C, BCAT-30C, and are provided by Guangzhou Yoghun synthetic materials, Inc.
The catalysts CUCAT-H, CUCAT-HA and CUCAT-PD are used for replacing the existing organic mercury catalysts in the market, the catalysts are environment-friendly catalysts and are different from the common tin amine catalysts, and because the catalysts do not catalyze trace amounts of the catalystsThe targeted catalytic characteristic of the reaction of water and isocyanate avoids CO generated by chemical reaction2The bubble can effectively avoid the phenomena of multiple bubbles and bubbling of the product even if the coating is used in humid weather, and the characteristic is also beneficial to ensuring the compactness of the coating when the single component is cured in humid conditions.
The catalyst BCAT-20C, BCAT-30C is used as a special organic bismuth product, the low VOC is suitable for the environmental protection requirement, and simultaneously compared with the common organic bismuth, the polyurea coating generated by the reaction has the advantages of water resistance, aging resistance, weather resistance and the like.
The water and electricity utilization single-component polyurea coating is further optimized as follows:
wherein the drying agent is sierozem powder;
wherein the pigment and filler is calcium carbonate.
The invention also relates to a preparation method of the single-component polyurea coating for hydroelectric water utilization, which comprises the following steps:
A. preparation of hydrogenated bisphenol a type epoxy resin:
in a four-neck flask provided with a thermometer, a reflux condenser tube, a mechanical stirrer and a dropping funnel, firstly, sequentially adding hydrogenated bisphenol A solution diluted by methyl isobutyl ketone, catalyst 1 and NaOH, stirring at 50 ℃, then, dropwise adding epoxy chloropropane, keeping the reaction process at 50 ℃, carrying out condensation reflux reaction for 10 hours, and simultaneously keeping the reaction under a sealed and anaerobic condition to finally obtain hydrogenated bisphenol A type epoxy resin, and storing for later use;
B. preparation of a prepolymer for isocyanate:
adding diisocyanate, dehydrated polyether polyol, a chain extender and a catalyst 2 into a four-neck flask provided with a thermometer, a reflux condenser tube, a mechanical stirrer and a dropping funnel, gradually heating to 75 ℃, reacting for 3 hours, then sucking a sample liquid to measure NCO, stopping the reaction when the NCO reaches a theoretical value, and then adding a diluent to control the viscosity of the solution to obtain a prepolymer of isocyanate;
C. preparing the single-component polyurea coating:
after the reaction in the step B is finished, adding the hydrogenated bisphenol A epoxy resin solution prepared in the step A into the obtained prepolymer of the isocyanate in proportion, controlling the temperature to be 60-70 ℃, dropwise adding diethylamine, and stirring for reaction for 3 hours to obtain hydrogenated bisphenol A epoxy resin modified isocyanate;
and then adding a blocked amine curing agent, a catalyst 3, a plasticizer, a drying agent and a filler, stirring for 20min, and keeping the pressure at-0.1 MPa in the stirring process at the room temperature of 25 ℃ to obtain the single-component polyurea coating.
Compared with the prior art, the single-component polyurea coating for hydroelectric water utilization has the following characteristics:
(1) the water, electricity and water of the invention utilizes the single-component polyurea coating, the moisture cured paint film is compact, and the mechanical property is stable and superior to that of the existing single-component polyurea coating competitive products in the market.
(2) The one-component polyurea coating for hydroelectric water utilization, disclosed by the invention, has the advantages that the applied catalyst is environment-friendly, so that the product is more environment-friendly, and a paint film is more compact, water-resistant and weather-resistant.
(3) According to the hydroelectric water utilization single-component polyurea coating, isocyanate is modified, hydrogenated epoxy resin is introduced, the bonding strength of the prepared hydroelectric water utilization single-component polyurea coating is greatly improved, and the yellowing resistance is not obviously changed.
(4) The water, electricity and water of the invention utilizes the single-component polyurea coating, modifies isocyanate, introduces hydrogenated epoxy resin, and improves the tensile strength on the premise of ensuring enough tensile elongation.
In addition, the hydroelectric water utilizes the single-component polyurea coating to consider outdoor use, the weather resistance of the coating is ensured, hydrogenated epoxy resin is introduced to modify the polyurea component A, wherein the ethylenediamine is used to promote the grafting of the epoxy resin on isocyanate, the conversion rate is higher, and meanwhile, the incompletely reacted ethylenediamine can be removed easily without affecting the synthesis of the prepolymer and the stability of the final mechanical property of the single-component polyurea coating material.
In addition, the single-component polyurea coating for hydroelectric water utilization disclosed by the invention overcomes the problems that the traditional spraying polyurea is fast in curing, poor in interlayer adhesion and easy to fall off from a base surface, and the service life is limited. The single-component polyurea can be manually coated, the thickness of the coating is about 1mm each time of construction, and meanwhile, paint mist pollution to the surrounding environment cannot be caused. The hydropower water utilizing the single-component polyurea coating has better low-temperature bending performance, and the hydropower water utilizing the single-component polyurea coating can well reinforce the basal plane strength.
In addition, the single-component polyurea coating for hydroelectric water utilization can be used for the aspects of hydroelectric water utilization, is not limited to the aspects, and can be used in places with high waterproof requirements.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. The simple improvement of the preparation method of the invention on the premise of the conception of the invention belongs to the protection scope of the invention.
Example 1
The invention discloses a preparation method of a single-component polyurea coating for hydroelectric water utilization, which comprises the following steps:
A. preparation of hydrogenated bisphenol a type epoxy resin:
in a four-neck flask provided with a thermometer, a reflux condenser tube, a mechanical stirrer and a dropping funnel, firstly, sequentially adding hydrogenated bisphenol A solution diluted by methyl isobutyl ketone, catalyst 1 and NaOH, stirring at 50 ℃, then, dropwise adding epoxy chloropropane, keeping the reaction process at 50 ℃, carrying out condensation reflux reaction for 10 hours, and simultaneously keeping the reaction under a sealed and anaerobic condition to finally obtain hydrogenated bisphenol A type epoxy resin, and storing for later use;
B. preparation of a prepolymer for isocyanate:
adding diisocyanate, dehydrated polyether polyol, a chain extender and a catalyst 2 into a four-neck flask provided with a thermometer, a reflux condenser tube, a mechanical stirrer and a dropping funnel, gradually heating to 75 ℃, reacting for 3 hours, then sucking a sample liquid to measure NCO, stopping the reaction when the NCO reaches a theoretical value, and then adding a diluent to control the viscosity of the solution to obtain a prepolymer of isocyanate;
C. preparing the single-component polyurea coating:
after the reaction in the step B is finished, adding the hydrogenated bisphenol A epoxy resin solution prepared in the step A into the obtained prepolymer of the isocyanate in proportion, controlling the temperature to be 60-70 ℃, dropwise adding diethylamine, and stirring for reaction for 3 hours to obtain hydrogenated bisphenol A epoxy resin modified isocyanate;
and then adding a blocked amine curing agent, a catalyst 3, a plasticizer, a drying agent and a filler, stirring for 20min, and keeping the pressure at-0.1 MPa in the stirring process at the room temperature of 25 ℃ to obtain the single-component polyurea coating.
Table 1 shows the composition of the raw materials of the one-component polyurea coating for hydroelectric water applications of the present invention.
Table 1 raw material composition table (parts by weight) of one-component polyurea coating for water, electricity and water utilization
| Item | 1# | 2# | 3# | 4# | 5# |
| Polyether polyols | 35 | 30 | 40 | 25 | 15 |
| Chain extender | 8 | 6 | 7 | 5 | 3 |
| Diisocyanate | 40 | 20 | 25 | 30 | 25 |
| Hydrogenated bisphenol A epoxy resin | 4 | 3 | 6 | 5 | 8 |
| Diluent | 5 | 4 | 5 | 4 | 3 |
| Ethylene diamine | 1 | 0.5 | 0.8 | 0.3 | 0.1 |
| Blocked amine curing agents | 1 | 0.3 | 0.6 | 0.1 | 0.4 |
| Plasticizer | 7 | 6 | 9 | 5 | 10 |
| Catalyst 1 | 0.8 | 0.5 | 0.3 | 0.1 | 1 |
| Catalyst 2 | 1 | 0.6 | 0.4 | 0.1 | 0.5 |
| Catalyst 3 | 0.4 | 0.2 | 0.5 | 0.1 | 1 |
| Drying agent | 8 | 10 | 9 | 7 | 5 |
| Pigment and filler | 15 | 5 | 8 | 10 | 12 |
The polyether polyol is at least one of polyether PPG1000, polyether PPG2000, polyether 3050 and polyether 330N, the raw materials are provided by Shandong Lanxingdong chemical industry, the main component is a propylene oxide condensate containing polyhydroxy, wherein, for example, 1000 represents molecular weight and is an important raw material component of the polyurea prepolymer.
Wherein the chain extender is 1, 4-butanediol.
Wherein the diisocyanate is an aliphatic isocyanate.
Wherein the aliphatic isocyanate is one of isophorone diisocyanate (IPDI), Hexamethylene Diisocyanate (HDI) and 4, 4' -dicyclohexylmethane diisocyanate (HMDI).
Wherein the diluent is one or the combination of acetone and ethyl acetate.
Wherein the blocked amine curing agent is oxazolidine curing agent.
Wherein the oxazolidine curing agent is one or a combination of more of 2-isopropyl-3-hydroxyethyl-1, 3-oxazolidine, 3-hydroxyethyl-1, 3-oxazolidine and 3-butyl-2- (1-ethylpentyl) oxazolidine.
Wherein the plasticizer is one of dibutyl phthalate, diethyl phthalate and dioctyl phthalate (DOP).
Wherein the catalyst 1 is a quaternary ammonium salt catalyst; catalyst 2 and catalyst 3 are oligomeric coordination hybrid organometallic catalysts, each of which is one of CUCAT-H, CUCAT-HA, CUCAT-PD, BCAT-20C, BCAT-30C, wherein the described metals are mainly Ca, Ce, Fe, Ni, Ti, Bi, Zn, etc., and the catalysts are provided by Guangzhou Yougun synthetic materials Co.
Wherein the drying agent is sierozem powder; the main components of the sierozem powder are calcium hydroxide and calcium oxide.
The pigment and filler is at least one of calcium carbonate, light calcium, barium sulfate and magnesium sulfate, and calcium carbonate is preferred.
In the component # 1, the preferable scheme is as follows:
the polyether polyol is polyether PPG1000, the chain extender is 1, 4-butanediol, the diisocyanate is isophorone diisocyanate, the hydrogenated bisphenol A epoxy resin is self-made hydrogenated bisphenol A epoxy resin prepared by the preparation method, the diluent is acetone, the blocked amine curing agent is 2-isopropyl-3 hydroxyethyl-1, 3 oxazolidine, the plasticizer is dibutyl phthalate, the catalyst 1 is a quaternary ammonium salt catalyst, the catalyst 2 is CUCAT-H, the catalyst 3 is BCAT-20C, and the unrecited raw materials are common product raw materials using the components.
In the 2# component, the preferred scheme is:
the polyether polyol is polyether 3050, the chain extender is 1, 4-butanediol, the diisocyanate is isophorone diisocyanate, the epoxy resin is hydrogenated bisphenol A type epoxy resin, the diluent is ethyl acetate, the blocked amine curing agent is 3-hydroxyethyl-1, 3-oxazolidine, the plasticizer is diethyl phthalate, the catalyst 1 is a quaternary ammonium salt catalyst, the catalyst 2 is CUCAT-HA, the catalyst 3 is BCAT-30C, the drying agent is sierozem powder, the pigment and filler is calcium carbonate, and the unrecited raw materials are common product raw materials using the components.
In the component # 3, the preferred scheme is:
the polyether polyol is polyether 330N, the chain extender is 1, 4-butanediol, 4' -dicyclohexylmethane diisocyanate (HMDI), the hydrogenated epoxy resin is hydrogenated bisphenol A epoxy resin, the diluent is acetone, the blocked amine curing agent is 3-butyl-2- (1-ethyl amyl) oxazolidine, the plasticizer is dibutyl phthalate, the catalyst 1 is a quaternary ammonium salt catalyst, the catalyst 2 is CUCAT-PD, the catalyst 3 is BCAT-20C, the drying agent is ash calcium powder, the pigment and filler is calcium carbonate, and the unrecited raw materials are common product raw materials using the components.
Table 2 is a table of performance test results of the one-component polyurea coating for hydroelectric water applications of the present invention.
Table 2 table of performance test results of the one-component polyurea coating for water, electricity and water utilization
The performance test result shows that the performances of the hydroelectric water utilizing single-component polyurea coating all meet the performance requirements and are far higher than the performances required to meet the I-class standard.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; those skilled in the art should also realize that such equivalent variations, modifications, and alterations are possible in light of the above teachings without departing from the spirit and scope of the present invention; meanwhile, any equivalent changes, modifications and evolution made to the above embodiments according to the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The experimental method of the present invention, in which the specific conditions are not specified, is generally carried out under the conventional conditions or the conditions recommended by the manufacturers.
The various optimized technical schemes in the invention can be combined with each other unless otherwise stated.
Unless otherwise indicated, percentages and parts are percentages and parts by weight.
The experimental procedures described in the specification and examples, which do not specify specific conditions, are generally carried out under the conditions which are customary or recommended by the manufacturers.
The various starting materials, reagents, components used in the present invention are, unless otherwise indicated, the corresponding starting materials commonly used in the art.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. In addition, any methods and materials similar or equivalent to those described herein can be used in the methods of the present invention.
Claims (10)
1. A preparation method of a single-component polyurea coating for hydroelectric water utilization is characterized by comprising the following steps:
the paint comprises the following components in parts by weight:
which comprises the following steps:
A. preparation of hydrogenated bisphenol a type epoxy resin:
in a four-neck flask provided with a thermometer, a reflux condenser tube, a mechanical stirrer and a dropping funnel, firstly, sequentially adding hydrogenated bisphenol A solution diluted by methyl isobutyl ketone, catalyst 1 and NaOH, stirring at 50 ℃, then, dropwise adding epoxy chloropropane, keeping the reaction process at 50 ℃, carrying out condensation reflux reaction for 10 hours, and simultaneously keeping the reaction under a sealed and anaerobic condition to finally obtain hydrogenated bisphenol A type epoxy resin, and storing for later use;
B. preparation of a prepolymer for isocyanate:
adding diisocyanate, dehydrated polyether polyol, a chain extender and a catalyst 2 into a four-neck flask provided with a thermometer, a reflux condenser tube, a mechanical stirrer and a dropping funnel, gradually heating to 75 ℃, reacting for 3 hours, then sucking a sample liquid to measure NCO, stopping the reaction when the NCO reaches a theoretical value, and then adding a diluent to control the viscosity of the solution to obtain a prepolymer of isocyanate;
C. preparing the single-component polyurea coating:
after the reaction in the step B is finished, adding the hydrogenated bisphenol A epoxy resin prepared in the step A into the obtained prepolymer of the isocyanate in proportion, controlling the temperature to be 60-70 ℃, dropwise adding diethylamine, and stirring for reaction for 3 hours to obtain hydrogenated bisphenol A epoxy resin modified isocyanate;
and then adding a blocked amine curing agent, a catalyst 3, a plasticizer, a drying agent and a pigment filler, stirring for 20min, and keeping the pressure at-0.1 MPa in the stirring process at the room temperature of 25 ℃ to obtain the single-component polyurea coating.
2. The preparation method of the one-component polyurea coating for hydroelectric water utilization according to claim 1, which is characterized in that:
the paint comprises the following components in parts by weight:
3. The preparation method of the one-component polyurea coating for hydroelectric water utilization according to claim 1, which is characterized in that:
wherein the polyether polyol is at least one of polyether PPG1000, polyether PPG2000, polyether 3050 and polyether 330N.
4. The preparation method of the one-component polyurea coating for hydroelectric water utilization according to claim 1, which is characterized in that:
wherein the chain extender is 1, 4-butanediol.
5. The preparation method of the one-component polyurea coating for hydroelectric water utilization according to claim 1, which is characterized in that:
wherein the diisocyanate is aliphatic isocyanate and is one of isophorone diisocyanate, hexamethylene diisocyanate and 4, 4' -dicyclohexylmethane diisocyanate.
6. The preparation method of the one-component polyurea coating for hydroelectric water utilization according to claim 1, which is characterized in that:
wherein the diluent is one or the combination of acetone and ethyl acetate.
7. The preparation method of the one-component polyurea coating for hydroelectric water utilization according to claim 1, which is characterized in that:
wherein the blocked amine curing agent is oxazolidine curing agent which is one or a combination of more of 2-isopropyl-3-hydroxyethyl-1, 3-oxazolidine, 3-hydroxyethyl-1, 3-oxazolidine and 3-butyl-2- (1-ethylpentyl) oxazolidine.
8. The preparation method of the one-component polyurea coating for hydroelectric water utilization according to claim 1, which is characterized in that:
wherein the plasticizer is one of dibutyl phthalate, diethyl phthalate and dioctyl phthalate.
9. The preparation method of the one-component polyurea coating for hydroelectric water utilization according to claim 1, which is characterized in that:
wherein the catalyst 1 is a quaternary ammonium salt catalyst; catalyst 2 and catalyst 3 are oligomeric coordination hybrid organometallic catalysts.
10. The utility model provides a water and electricity water utilization one-component polyurea coating which characterized in that:
the hydroelectric water single-component polyurea coating is prepared by the preparation method of the hydroelectric water single-component polyurea coating according to any one of claims 1 to 9.
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