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A kind of spray polyurea elastomer and preparation method thereof

A polyurea elastomer, volume ratio technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., to achieve the effect of low friction coefficient, reduced conveying resistance, and excellent corrosion resistance

Active Publication Date: 2019-03-05
QINGDAO AIR NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polyurea elastomers have relatively common weather resistance, chemical medium resistance, and flame retardancy, which cannot meet the requirements of special environments, which limits their application and development.

Method used

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  • A kind of spray polyurea elastomer and preparation method thereof
  • A kind of spray polyurea elastomer and preparation method thereof
  • A kind of spray polyurea elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method for spraying polyurea elastomer, comprising:

[0042] (1) Preparation of component A:

[0043] Add 100 parts of polyoxypropylene diol N210 and 50 parts of 2,2,3,3-tetrafluoro-1,4-butanediol into the reactor, dehydrate at 120°C for 2 hours under a vacuum of 0.09MPa, and then lower the temperature Add dropwise to 313 parts of toluene diisocyanate reaction kettle at 50°C, slowly raise the temperature to 90°C, keep the temperature for 2 hours, cool down after defoaming, and obtain component A of isocyanate prepolymer with -NCO content of 12%;

[0044] (2) Preparation of component B:

[0045] Pour 30 parts of amino-terminated polyether D2000, 30 parts of dimethylthiotoluenediamine, 0.5 part of fumed silica, 0.1 part of Tego Dispers 610 and 0.5 part of Tego Foamex N into the reaction kettle, raise the temperature to 60°C, and stir for 30 minutes , the rotation speed is 600r / min, then add 1.0 parts of color paste and continue to stir for 30 minutes to ob...

Embodiment 2

[0051] A preparation method for spraying polyurea elastomer, comprising:

[0052] (2) Preparation of component A:

[0053] Add 50 parts of 1H,1H,5H,5H-perfluoro-1,5-pentanediol and 50 parts of polytetrahydrofuran-oxypropylene copolymerized glycol into the reaction kettle, dehydrate at 125°C and 0.09MPa vacuum for 2.5h , then drop the temperature to 50°C and drop it into a reaction kettle of 97.5 parts of isophorone diisocyanate, slowly raise the temperature to 85°C, keep the temperature for 2.5 hours, cool down after defoaming, and obtain an isocyanate prepolymer with a -NCO content of 17%. A component;

[0054] (2) Preparation of component B:

[0055]Pour 40 parts of amino-terminated polyether T5000, a mixture of 36 parts of dimethylthiotoluenediamine and diethyltoluenediamine, 0.8 parts of fumed silica, 0.3 parts of Tego Dispers 630 and 0.7 parts of Airex 930 into the reaction kettle , heated up to 70°C, stirred for 36 minutes, and rotated at 700r / min, then added 3.0 part...

Embodiment 3

[0061] A preparation method for spraying polyurea elastomer, comprising:

[0062] (1) Preparation of component A:

[0063] Add 100 parts of polyoxypropylene diol N204 and 50 parts of 1H,1H,10H,10H-perfluoro-1,10-decanediol into the reaction kettle, dehydrate at 130°C and 0.09MPa vacuum for 3 hours, then lower the temperature Add dropwise to 249 parts of diphenylmethane diisocyanate and 4,4'-dicyclohexylmethane diisocyanate reaction kettle at 50°C, slowly raise the temperature to 80°C, keep the temperature for 3 hours, and cool down after defoaming to obtain the -NCO content 20% isocyanate prepolymer A component;

[0064] (2) Preparation of component B:

[0065] Pour 50 parts of amino-terminated polyether D2000, 45 parts of N,N'-dialkylmethyldiamine, 1 part of fumed silica, 0.5 parts of Tego Dispers 610, 0.5 parts of Airex 900 and 0.5 parts of Airex 950 into the reaction kettle In the process, heat up to 80°C, stir for 45 minutes, and rotate at a speed of 800r / min, then add ...

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Abstract

The invention discloses a spray polyurea elastomer and a preparation method thereof. The spray polyurea elastomer comprises a component A and a component B, wherein the volume ratio of the component A to the component B is 1: 1; the component A is isocyanate prepolymer compounded through the reaction of polyether polyol, fluorine-containing polyol, and isocyanate, and the -NCO content is 12%-20%; the component B comprises the followings in parts by weight: 30-50 parts of amine-terminated polyether, 30-45 parts of a chain extender, 0.5-1.0 part of fumed silica, 0.1-0.5 part of a dispersing agent, 0.5-1.0 part of a defoaming agent and 1.0-5.0 parts of color paste. The polyurea elastomer provided by the invention is excellent in weather resistance, resistance to chemical reagents and fire resistance and good in abrasion resistance.

Description

technical field [0001] The invention relates to the technical field of sprayed polyurea elastomers, in particular to a sprayed polyurea elastomer and a preparation method thereof. Background technique [0002] Spray polyurea elastomer is a new multi-functional material integrating waterproof, anti-corrosion, wear-resistant, anti-slip and decorative functions. It has the advantages of good waterproof membrane performance and convenient waterproof coating construction. In addition to being used as a high-performance waterproof material, it is also a good anti-corrosion, wear-resistant, anti-slip and decorative material. Polyurea elastomer is a rapid-response spraying molding. The raw material system does not contain solvents (environmental protection), and the curing speed is fast. It can be continuously sprayed on the facade and curved surface with a thickness of more than ten millimeters without sagging. [0003] Spraying polyurea technology has completely broken through th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C08L75/02C08K3/36C08G18/66C08G18/48C08G18/32C08G18/12
Inventor 王宝柱王伟张安智郭焱
Owner QINGDAO AIR NEW MATERIALS
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