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Thick coating polyurea material and preparation method thereof

A thick-coated polyurea technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as increased construction costs, limited storage time, and high environmental requirements, and achieves reduced construction times, good matching, and smooth surfaces Effect

Active Publication Date: 2018-08-21
GUANGZHOU JRACE ATHLETIC FACILITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At the same time, the traditional one-component polyurethane material is cured by moisture when paving, and it is easy to generate bubbles during the curing process, which has a great adverse effect on subsequent construction, and the thickness of the pavement is strictly limited. The thickness cannot exceed 1mm. If the thickness of the court is required to be 3mm or above, repeated construction is required, which not only increases the construction cost, but also brings in space for construction problems caused by operational errors; and the two-component polyurethane material There are even more insurmountable disadvantages: materials need to be configured at any time and used at any time, and the storage time is strictly limited. Construction workers are required to weigh and mix accurately, and the requirements for the environment are relatively high during the construction process.

Method used

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  • Thick coating polyurea material and preparation method thereof
  • Thick coating polyurea material and preparation method thereof
  • Thick coating polyurea material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A kind of thick-coated polyurea material of this embodiment is prepared by the following steps:

[0047] (1) get 300g altogether of polyoxypropylene diol (Mn=1000) and polyoxypropylene triol (Mn=5000) that molar ratio is 1:1, plasticizer dibutyl phthalate 140g, talcum powder 85g , kaolin 120g, titanium dioxide 4g, light calcium carbonate 45g, heavy calcium carbonate 260g, mix and heat to 110°C, dehydrate under 0.095MPa vacuum for 2h, then cool down to 80°C, add 4,4′-diphenylmethane Diisocyanate 32.84g, heat preservation reaction 1.5h; Among them, the molar ratio of -NCO in polyisocyanate to -OH in polyether polyol=1.05:1; The particle size of talcum powder, kaolin, titanium dioxide is 800 mesh, light The particle size of calcium carbonate and heavy calcium carbonate is 1200 mesh;

[0048] (2) Add 4.13g of hydroxyoxazolidine (2-phenyl-2'-(2-ethyl-hydroxyethyl)-3-(2-methyl-butyl)-1,3-oxazolidine) , reacted at 78° C. for 1 h; the molar ratio of hydroxyoxazolidine to the ...

Embodiment 2

[0052] A kind of thick-coated polyurea material of this embodiment is prepared by the following steps:

[0053] (1) Take a total of 280g of polyoxypropylene diol (Mn=2000) and polyoxypropylene triol (Mn=3000) with a molar ratio of 1:4, 160g of plasticizer diisooctyl phthalate, and talcum powder 105g, kaolin 120g, titanium dioxide 5g, light calcium carbonate 35g, heavy calcium carbonate 225g, mix and heat to 110°C, dehydrate under 0.095MPa vacuum for 2h, then cool down to 80°C, add 4,4′-diphenyl Methane diisocyanate 68.32g, heat preservation reaction 1.5h; Among them, the molar ratio of -NCO in polyisocyanate and -OH in polyether polyol=1.95:1; The particle size of calcium carbonate and heavy calcium carbonate is 800 mesh;

[0054] (2) Add 17.56g of hydroxyoxazolidine (2-phenyl-2'-(2-ethyl-hydroxyethyl)-3-(2-methyl-butyl)-1,3-oxazolidine) , reacted at 82°C for 1.5h; the molar ratio of hydroxyoxazolidine to the residual -NCO in the reaction product obtained in step (1) = 1:5; ...

Embodiment 3

[0058] A kind of thick-coated polyurea material of this embodiment is prepared by the following steps:

[0059] (1) Take a total of 270g of polyoxypropylene diol (Mn=1000), polyoxypropylene triol (Mn=3000) and polyoxypropylene triol (Mn=5000) with a molar ratio of 1:1:1, plasticize Dibutyl phthalate 190g, talcum powder 90g, kaolin 145g, titanium dioxide 7g, light calcium carbonate 65g, heavy calcium carbonate 245g, mixed and heated to 120°C, dehydrated under 0.1MPa vacuum for 2h, and then cooled to At 85°C, add 42.04g of 4,4′-diphenylmethane diisocyanate and keep it warm for 1.5h; wherein, the molar ratio of -NCO in polyisocyanate to -OH in polyether polyol = 1.40:1; talcum powder , The particle size of kaolin is 600 mesh, the particle size of titanium dioxide, light calcium carbonate and heavy calcium carbonate is 1200 mesh;

[0060] (2) Add 15.84g of hydroxyoxazolidine (2-phenyl-2'-(2-ethyl-hydroxyethyl)-3-(2-methyl-butyl)-1,3-oxazolidine) , reacted at 85°C for 1.5h; the m...

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Abstract

The invention relates to a thick-layered polyurea material and a preparation method thereof. The preparation method comprises steps as follows: (1), polyether polyol, a plasticizer and filler are taken and heated to 100-120 DEG C, a mixture is dehydrated under the vacuum condition and is cooled to 75-90 DEG C, polyisocyanate is added, a thermal insulation reaction is performed for 1-2 h, and a reaction product A is obtained; (2), hydroxyl oxazolidine is added to the reaction product A, a mixture is subjected to a reaction at the temperature of 75-90 DEG C for 1-2 h, a reaction product B is obtained, and the thick-layered polyurea material is prepared. The thick-layered polyurea material prepared with the method can be laid for 3 mm or thicker once, and no CO2 is emitted during curing, so that the problem of bubbling is solved; besides, the content of isocyanate groups is low, thus, the harm to a constructor and a user is reduced, and various properties such as viscosity, hardness, toughness and the like are better.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a thick-coated polyurea material and a preparation method thereof. Background technique [0002] All kinds of sports venues in our country, such as plastic track and field, tennis courts, basketball courts, etc., mainly use a cast polyurethane product. The stadium paved with it has good elasticity, non-slip, and can effectively protect athletes from damage, can be used around the clock. However, these polyurethane products will inevitably contain free isocyanate monomers, which are seriously irritating to the human respiratory system and have caused great harm to human health during the production and construction of court materials. During use, toxic gas will be released slowly, which will also cause great harm to human health. As early as 1994, IST (International Sports Track Technology Association) put forward the suggestion of "do not accept the use of polyurethan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C08G18/48C08G18/76C08G18/83C08K13/02C08K5/12C08K3/34C08K3/22C08K3/26
CPCC08G18/4812C08G18/4825C08G18/4829C08G18/7671C08G18/833C08K3/22C08K3/26C08K3/34C08K3/346C08K5/12C08K13/02C08K2003/2241C08K2003/265C08K2201/014C09D175/08
Inventor 郑景新程劲松詹金城
Owner GUANGZHOU JRACE ATHLETIC FACILITIES