Polyurea nano self-leveling material based on runway and court foundation

Abstract

The invention discloses a runway court foundation-based polyurea nano self-leveling material, which comprises the following raw materials: a waterborne polyurethane matrix, a nano modified additive and an auxiliary agent, and the substance mass ratio of the waterborne polyurethane matrix to the nano modified additive to the auxiliary agent is (11-15): (4-5): 2. According to the water-based nano material, the water-based polyurethane matrix is adopted as the matrix, and the performance effect of the product is optimized through mutual blending and synergistic effect of the nano modified additive and the auxiliary agent, so that the elasticity and the wear resistance of the product are harmoniously improved, and the weather resistance and the cold and heat resistance stability of the product are remarkable.

Description

Technical Field

[0001] The invention relates to the technical field of water-based nano materials, and in particular to a polyurea nano self-leveling material based on a runway or court foundation. Background Art

[0002] The plastic track court is also called the all-weather track and field sports track court. It has good flatness and compression resistance, good stability, and appropriate elasticity and hardness, which can improve sports safety. It is an excellent outdoor floor material.

[0003] The water-based polyurethane material used in the foundation of existing runways and courts has poor elasticity and wear resistance. It is difficult to achieve coordinated improvement in elasticity and wear resistance. The weather resistance and heat and cold stability of the product are poor, which limits the efficiency of the product. Based on this, further improvement is needed. Summary of the invention

[0004] In view of the defects of the prior art, the purpose of the present invention is to provide a polyurea nano self-leveling material based on a runway or court foundation to solve the problems raised in the above background technology.

[0005] The present invention solves the technical problem by adopting the following technical solution: The present invention provides a polyurea nano self-leveling material based on a runway or court foundation, comprising the following raw materials: a waterborne polyurethane matrix, a nano-modified additive and an auxiliary agent, wherein the mass ratio of the waterborne polyurethane matrix, the nano-modified additive and the auxiliary agent is (11-15):(4-5):2.

[0006] Preferably, the waterborne polyurethane matrix is ​​made by the existing method of a waterborne polyurethane runway and court material and its preparation method in CN105131819B.

[0007] Preferably, the preparation method of the nano-modified additive is: S1: Add 2-4 parts of nano-zirconium oxide and 1-3 parts of chitosan solution to 5-8 parts of dopamine hydrochloride solution, then add 1-2 parts of silane coupling agent KH550, and stir thoroughly to obtain a modified solution; S2: adding nano-alumina into the modified liquid in a weight ratio of 2:5 and stirring for modification. After the stirring is completed, a modified nano-alumina liquid is obtained; S3: adding 2-5 parts of nano titanium dioxide and 3-5 parts of nano bentonite to 5-8 parts of 5% by mass yttrium nitrate solution, stirring thoroughly, then filtering and drying to obtain a regulator; S4: Add a regulator accounting for 15 - 20% of the total amount of the modified nano-aluminum oxide solution to the modified nano-aluminum oxide solution, ball mill for 1 h under the condition of 550 - 650 r / min, end the ball milling, carry out suction filtration and drying to obtain a nano-modified additive.

[0008] Preferably, the stirring speed for the stirring modification treatment is 550 - 750 r / min, the stirring time is 1 - 2 h, and the stirring temperature is 55 - 60 °C.

[0009] Preferably, the mass fraction of the chitosan solution is 2 - 5%; the mass fraction of the hydrochloric acid dopamine solution is 3 - 6%.

[0010] Preferably, the preparation method of the auxiliary agent is as follows: S11: Add 3 - 5 parts of basalt fiber, 1 - 3 parts of sodium dodecylbenzenesulfonate solution, and 1 - 2 parts of hydroxyapatite to 5 - 8 parts of sodium alginate solution and stir well to obtain a fiber solution; S12: Preheat silicon carbide whiskers at a temperature of 60 - 70 °C for 1 h, end the preheating to obtain preheated silicon carbide whiskers, mix and stir well the preheated silicon carbide whiskers and the fiber solution according to a weight ratio of 5:3, then carry out suction filtration and drying to obtain an auxiliary agent.

[0011] Preferably, the mass fraction of the sodium alginate solution is 2 - 5%; the mass fraction of the sodium dodecylbenzenesulfonate solution is 4 - 7%.

[0012] A preparation method of a polyurea nano-self-leveling material based on a runway court foundation, comprising the following steps: uniformly blend an aqueous polyurethane matrix, a nano-modified additive, and an auxiliary agent to obtain the aqueous nano-material of the present invention based on the runway court foundation.

[0013] Preferably, the rotation speed for the uniform blending is 750 - 850 r / min, and the blending time is 1 h.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The water-based nano material of the present invention adopts a water-based polyurethane matrix as a matrix, and optimizes the performance effect of the product by the mutual coordination and synergy of the nano-modified additive and the auxiliary agent, so that the elasticity and wear resistance of the product are coordinated and improved, and the weather resistance and cold and heat stability of the product are significantly improved. The nano-modified additive adopts nano-alumina to be improved by the modified liquid, and then adjusted and improved by the regulator. The nano-zirconium oxide, chitosan solution, dopamine hydrochloride solution and silane coupling agent KH550 in the modified liquid are coordinated and coordinated, and the product performance is optimized by the synergy between the raw materials. Energy effect, at the same time, nano titanium dioxide, nano bentonite and 5% by mass yttrium nitrate solution are blended to further enhance the performance of the product system. At the same time, the auxiliary agent is preheated with silicon carbide whiskers and then coordinated with the fiber liquid for improvement. The basalt fiber, sodium dodecylbenzene sulfonate solution, hydroxyapatite and sodium alginate solution in the fiber liquid are blended and adjusted to further improve the performance of the product. Then the auxiliary agent and nano-modified additives are blended and coordinated to achieve synergistic effect, and then the performance of the product is coordinated and coordinated, and the product performance is further improved. DETAILED DESCRIPTION

[0015] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] A polyurea nano self-leveling material based on a runway or court foundation in this embodiment includes the following raw materials: a waterborne polyurethane matrix, a nano-modified additive, and an auxiliary agent, wherein the mass ratio of the waterborne polyurethane matrix, the nano-modified additive, and the auxiliary agent is (11-15):(4-5):2.

[0017] The waterborne polyurethane matrix of this embodiment is made by adopting the existing method of a waterborne polyurethane runway and court material and its preparation method in CN105131819B.

[0018] The preparation method of the nano-modified additive of this embodiment: S1: Add 2-4 parts of nano-zirconium oxide and 1-3 parts of chitosan solution to 5-8 parts of dopamine hydrochloride solution, then add 1-2 parts of silane coupling agent KH550, and stir thoroughly to obtain a modified solution; S2: adding nano-alumina into the modified liquid in a weight ratio of 2:5 and stirring for modification. After the stirring is completed, a modified nano-alumina liquid is obtained; S3: adding 2-5 parts of nano titanium dioxide and 3-5 parts of nano bentonite to 5-8 parts of 5% by mass yttrium nitrate solution, stirring thoroughly, then filtering and drying to obtain a regulator; S4: adding a regulator in an amount of 15-20% of the total amount of the modified nano-alumina liquid to the modified nano-alumina liquid, ball milling for 1 hour at 550-650 r / min, filtering and drying after the ball milling is completed to obtain a nano-modified additive.

[0019] The stirring speed of the stirring modification treatment in this embodiment is 550-750 r / min, the stirring time is 1-2 h, and the stirring temperature is 55-60°C.

[0020] The mass fraction of the chitosan solution in this embodiment is 2-5%; the mass fraction of the dopamine hydrochloride solution is 3-6%.

[0021] The preparation method of the auxiliary agent of this embodiment is: S11: adding 3-5 parts of basalt fiber, 1-3 parts of sodium dodecylbenzene sulfonate solution and 1-2 parts of hydroxyapatite to 5-8 parts of sodium alginate solution and stirring thoroughly to obtain a fiber solution; S12: Preheat the silicon carbide whisker at 60-70°C for 1 hour. After the preheating is completed, the preheated silicon carbide whisker is obtained. The preheated silicon carbide whisker and the fiber liquid are mixed and stirred thoroughly in a weight ratio of 5:3, and then filtered and dried to obtain an auxiliary agent.

[0022] The mass fraction of the sodium alginate solution in this embodiment is 2-5%; the mass fraction of the sodium dodecylbenzene sulfonate solution is 4-7%.

[0023] The preparation method of a water-based nanomaterial based on a runway or court foundation of the present embodiment comprises the following steps: uniformly blending a water-based polyurethane matrix, a nano-modified additive and an auxiliary agent to obtain the water-based nanomaterial based on a runway or court foundation of the present invention.

[0024] The speed for uniform blending in this embodiment is 750-850 r / min, and the blending time is 1 hour.

[0025] Example 1. The polyurea nano self-leveling material based on a runway or court of the present embodiment comprises the following raw materials: a waterborne polyurethane matrix, a nano-modified additive and an auxiliary agent, wherein the mass ratio of the waterborne polyurethane matrix, the nano-modified additive and the auxiliary agent is 11:4:2.

[0026] The waterborne polyurethane matrix of this embodiment is made by adopting the existing method of a waterborne polyurethane runway and court material and its preparation method in CN105131819B.

[0027] The preparation method of the nano-modified additive of this embodiment: S1: Add 2 parts of nano-zirconia and 1 part of chitosan solution to 5 parts of hydrochloric acid dopamine solution, and then add 1 part of silane coupling agent KH550. Stir well to obtain a modified solution. S2: Add nano-alumina to the modified solution according to a weight ratio of 2:5 and stir for modification. After stirring, a modified nano-alumina solution is obtained. S3: Add 2 parts of nano-titanium dioxide and 3 parts of nano-bentonite to 5 parts of yttrium nitrate solution with a mass fraction of 5%, stir well, then filter and dry to obtain a regulator. S4: Add a regulator accounting for 15% of the total amount of the modified nano-alumina solution to the modified nano-alumina solution, ball mill at 550 r / min for 1 h. After ball milling, filter and dry to obtain a nano-modified additive.

[0028] In this example, the stirring speed for the stirring modification treatment is 550 r / min, the stirring time is 1 h, and the stirring temperature is 55 °C.

[0029] In this example, the mass fraction of the chitosan solution is 2%; the mass fraction of the hydrochloric acid dopamine solution is 3%.

[0030] The preparation method of the auxiliary agent in this example is as follows: S11: Add 3 parts of basalt fiber, 1 part of sodium dodecyl benzene sulfonate solution and 1 part of hydroxyapatite to 5 parts of sodium alginate solution and stir well to obtain a fiber solution. S12: Preheat silicon carbide whiskers at 60 °C for 1 h. After preheating, preheated silicon carbide whiskers are obtained. Mix the preheated silicon carbide whiskers and the fiber solution according to a weight ratio of 5:3, stir well, then filter and dry to obtain an auxiliary agent.

[0031] In this example, the mass fraction of the sodium alginate solution is 2%; the mass fraction of the sodium dodecyl benzene sulfonate solution is 4%.

[0032] The preparation method of a water-based nano material based on a runway court foundation in this example includes the following steps: Blend the water-based polyurethane matrix, the nano-modified additive and the auxiliary agent evenly to obtain the water-based nano material based on the runway court foundation of the present invention.

[0033] In this example, the blending speed for even blending is 750 r / min, and the blending time is 1 h.

[0034] Example 2. A polyurea nano self-leveling material based on a runway court foundation in this example includes the following raw materials: a water-based polyurethane matrix, a nano-modified additive and an auxiliary agent, wherein the mass ratio of the water-based polyurethane matrix, the nano-modified additive and the auxiliary agent is 15:5:2.

[0035] The waterborne polyurethane matrix of this embodiment is made by adopting the existing method of a waterborne polyurethane runway and court material and its preparation method in CN105131819B.

[0036] The preparation method of the nano-modified additive of this embodiment: S1: Add 4 parts of nano-zirconium oxide and 3 parts of chitosan solution to 8 parts of dopamine hydrochloride solution, then add 2 parts of silane coupling agent KH550, and stir thoroughly to obtain a modified solution; S2: adding nano-alumina into the modified liquid in a weight ratio of 2:5 and stirring for modification. After the stirring is completed, a modified nano-alumina liquid is obtained; S3: adding 5 parts of nano titanium dioxide and 5 parts of nano bentonite to 8 parts of 5% by mass yttrium nitrate solution, stirring thoroughly, then filtering and drying to obtain a regulator; S4: Add 20% of the total amount of the modified nano-alumina liquid to the modified nano-alumina liquid as a regulator, and ball-mill for 1 hour at 650 r / min. After the ball-milling is completed, filter and dry to obtain a nano-modified additive.

[0037] The stirring speed of the stirring modification treatment in this embodiment is 750 r / min, the stirring time is 2 h, and the stirring temperature is 60°C.

[0038] The mass fraction of the chitosan solution in this embodiment is 5%; the mass fraction of the dopamine hydrochloride solution is 6%.

[0039] The preparation method of the auxiliary agent of this embodiment is: S11: adding 5 parts of basalt fiber, 3 parts of sodium dodecylbenzene sulfonate solution and 2 parts of hydroxyapatite to 8 parts of sodium alginate solution and stirring thoroughly to obtain a fiber solution; S12: Preheat the silicon carbide whisker at 70° C. for 1 hour. After the preheating is completed, the preheated silicon carbide whisker is obtained. The preheated silicon carbide whisker and the fiber liquid are mixed and stirred thoroughly in a weight ratio of 5:3, and then filtered and dried to obtain an auxiliary agent.

[0040] The mass fraction of the sodium alginate solution in this embodiment is 5%; the mass fraction of the sodium dodecylbenzene sulfonate solution is 7%.

[0041] The preparation method of a water-based nanomaterial based on a runway or court foundation of the present embodiment comprises the following steps: uniformly blending a water-based polyurethane matrix, a nano-modified additive and an auxiliary agent to obtain the water-based nanomaterial based on a runway or court foundation of the present invention.

[0042] The speed for uniform blending in this embodiment is 850 r / min, and the blending time is 1 h.

[0043] Example 3. The polyurea nano self-leveling material based on a runway or court of the present embodiment comprises the following raw materials: a waterborne polyurethane matrix, a nano-modified additive and an auxiliary agent, wherein the mass ratio of the waterborne polyurethane matrix, the nano-modified additive and the auxiliary agent is 13:4.5:2.

[0044] The waterborne polyurethane matrix of this embodiment is made by adopting the existing method of a waterborne polyurethane runway and court material and its preparation method in CN105131819B.

[0045] The preparation method of the nano-modified additive of this embodiment: S1: Add 3 parts of nano zirconium oxide and 2 parts of chitosan solution to 6.5 parts of dopamine hydrochloride solution, then add 1.5 parts of silane coupling agent KH550, and stir thoroughly to obtain a modified solution; S2: adding nano-alumina into the modified liquid in a weight ratio of 2:5 and stirring for modification. After the stirring is completed, a modified nano-alumina liquid is obtained; S3: adding 3.5 parts of nano titanium dioxide and 4 parts of nano bentonite to 6.5 parts of 5% by mass yttrium nitrate solution, stirring thoroughly, then filtering and drying to obtain a regulator; S4: adding a regulator in an amount of 17.5% of the total amount of the modified nano-alumina liquid to the modified nano-alumina liquid, ball milling for 1 hour at 600 r / min, filtering and drying after the ball milling is completed to obtain a nano-modified additive.

[0046] The stirring speed of the stirring modification treatment in this embodiment is 600 r / min, the stirring time is 1.5 h, and the stirring temperature is 57.5°C.

[0047] The mass fraction of the chitosan solution in this embodiment is 3.5%; the mass fraction of the dopamine hydrochloride solution is 4.5%.

[0048] The preparation method of the auxiliary agent of this embodiment is: S11: adding 4 parts of basalt fiber, 2 parts of sodium dodecylbenzene sulfonate solution and 1.5 parts of hydroxyapatite to 6.5 parts of sodium alginate solution and stirring thoroughly to obtain a fiber solution; S12: Preheat the silicon carbide whisker at 65° C. for 1 hour. After the preheating is completed, the preheated silicon carbide whisker is obtained. The preheated silicon carbide whisker and the fiber liquid are mixed and stirred thoroughly in a weight ratio of 5:3, and then filtered and dried to obtain an auxiliary agent.

[0049] The mass fraction of the sodium alginate solution in this embodiment is 3.5%; the mass fraction of the sodium dodecylbenzene sulfonate solution is 5.5%.

[0050] A preparation method of an aqueous nanomaterial based on a runway and stadium foundation according to this embodiment includes the following steps: uniformly blending an aqueous polyurethane matrix, a nano-modified additive, and an auxiliary agent to obtain the aqueous nanomaterial based on the runway and stadium foundation of the present invention.

[0051] In this embodiment, the rotation speed for uniform blending is 800 r / min, and the blending time is 1 h.

[0052] Comparative Example 1. The difference from Example 3 is that no nano-modified additive is added.

[0053] Comparative Example 2. The difference from Example 3 is that the modified nano-alumina solution is not added during the preparation of the nano-modified additive.

[0054] Comparative Example 3. The difference from Example 3 is that the modified nano-alumina solution is not treated with a modification solution.

[0055] Comparative Example 4. The difference from Example 3 is that no regulator is added during the preparation of the nano-modified additive.

[0056] Comparative Example 5. The difference from Example 3 is that no auxiliary agent is added.

[0057] Comparative Example 6. The difference from Example 3 is that no fiber solution is added to the auxiliary agent.

[0058] The product performance tests of Examples 1 - 3 and Comparative Examples 1 - 6 are as follows:

[0059] It can be seen from Comparative Examples 1 - 6 and Example 3 that when one of the nano-modified additive and the auxiliary agent is not added to the product, the performance of the product deteriorates significantly. By using the synergistic combination of the two, the performance effect of the product is the most obvious; When the modified nano-alumina solution is not added during the preparation of the nano-modified additive, the modified nano-alumina solution is not treated with a modification solution, no regulator is added during the preparation of the nano-modified additive, no auxiliary agent is added, and no fiber solution is added to the auxiliary agent, the performance of the product all shows a deteriorating trend. Only the product raw materials obtained by the method of the present invention have the most significant performance effect, and using other methods to replace them is not as effective as the present invention.

[0060] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention.

[0061] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A polyurea nano self-leveling material based on a runway or court foundation, characterized in that: The invention comprises the following raw materials: a waterborne polyurethane matrix, a nano-modified additive and an auxiliary agent, wherein the mass ratio of the waterborne polyurethane matrix, the nano-modified additive and the auxiliary agent is (11-15): (4-5):

2.

2. The polyurea nano self-leveling material based on a runway or court foundation according to claim 1, characterized in that: The waterborne polyurethane matrix is ​​made by adopting the existing method of a waterborne polyurethane runway and court material and its preparation method in CN105131819B.

3. The polyurea nano self-leveling material based on a runway or court foundation according to claim 2, characterized in that: The preparation method of the nano-modified additive: S1: Add 2-4 parts of nano-zirconium oxide and 1-3 parts of chitosan solution to 5-8 parts of dopamine hydrochloride solution, then add 1-2 parts of silane coupling agent KH550, and stir thoroughly to obtain a modified solution; S2: adding nano-alumina into the modified liquid in a weight ratio of 2:5 and stirring for modification. After the stirring is completed, a modified nano-alumina liquid is obtained; S3: adding 2-5 parts of nano titanium dioxide and 3-5 parts of nano bentonite to 5-8 parts of 5% by mass yttrium nitrate solution, stirring thoroughly, then filtering and drying to obtain a regulator; S4: adding a regulator in an amount of 15-20% of the total amount of the modified nano-alumina liquid to the modified nano-alumina liquid, ball milling for 1 hour at 550-650 r / min, filtering and drying after the ball milling is completed to obtain a nano-modified additive.

4. The polyurea nano self-leveling material based on a runway or court foundation according to claim 3, characterized in that: The stirring speed of the stirring modification treatment is 550-750 r / min, the stirring time is 1-2 h, and the stirring temperature is 55-60°C.

5. The polyurea nano self-leveling material based on a runway or court foundation according to claim 3, characterized in that: The mass fraction of the chitosan solution is 2-5%; the mass fraction of the dopamine hydrochloride solution is 3-6%.

6. The polyurea nano self-leveling material based on a runway or court foundation according to claim 3, characterized in that: The preparation method of the auxiliary agent is: S11: adding 3-5 parts of basalt fiber, 1-3 parts of sodium dodecylbenzene sulfonate solution and 1-2 parts of hydroxyapatite to 5-8 parts of sodium alginate solution and stirring thoroughly to obtain a fiber solution; S12: Preheat the silicon carbide whisker at 60-70°C for 1 hour. After the preheating is completed, the preheated silicon carbide whisker is obtained. The preheated silicon carbide whisker and the fiber liquid are mixed and stirred thoroughly in a weight ratio of 5:3, and then filtered and dried to obtain an auxiliary agent.

7. The polyurea nano self-leveling material based on a runway or court foundation according to claim 6, characterized in that: The mass fraction of the sodium alginate solution is 2-5%; the mass fraction of the sodium dodecylbenzene sulfonate solution is 4-7%.

8. The method for preparing a polyurea nano self-leveling material based on a runway or court as claimed in claim 1, characterized in that: The following steps are involved: The water-based polyurethane matrix, the nano-modified additive and the auxiliary agent are uniformly blended to obtain the water-based nano-material based on the track and court of the present invention.

9. The method for preparing a polyurea nano self-leveling material based on a runway or court according to claim 8, characterized in that: The uniform blending speed is 750-850 r / min, and the blending time is 1 hour.

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