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Anti-explosion impact polyurea coating and preparation method thereof

A coating and polyurea technology, which is applied in the field of explosion-proof impact polyurea coating and its preparation, can solve the problems of low temperature flexibility and high tearing, and achieve the effects of stable performance, good low temperature flexibility and enhanced performance.

Active Publication Date: 2017-05-31
QINGDAO AIR NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the problem existing in the prior art that it is difficult to simultaneously meet the requirements of high strength, strength retention under high-speed impact, high tearing, and low-temperature flexibility, the present invention provides a blast-proof impact polyurea coating and a preparation method thereof

Method used

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  • Anti-explosion impact polyurea coating and preparation method thereof
  • Anti-explosion impact polyurea coating and preparation method thereof
  • Anti-explosion impact polyurea coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The formulation of the anti-explosion impact polyurea coating in this implementation case is as follows:

[0028] A component

[0029] MDI-50 50

[0030] MS-202 (polycarbonate polyol) 45

[0031] Modified graphene slurry 5

[0032] B component

[0033]

[0034]

[0035] Preparation of modified graphene slurry: mix natural flake graphite (Qingdao Hexing, 800 mesh) with sodium nitrate and add to the reaction vessel, add concentrated sulfuric acid, react at room temperature for 2 hours, add potassium permanganate, heat up to 40°C for 3 hours Then add deionized water and raise the temperature to 90°C, add hydrogen peroxide, wash and dry, then mix it with MDI-50, DMF, aminosilane KH550, and then ultrasonically disperse it, then vacuum dry at 90°C and extract the solvent to obtain a solvent-free liquid graphene slurry material.

[0036] Add 45 parts of MS-202 into the reaction kettle, then add 5 parts of modified graphene slurry, heat to 110°C for 3 hours and then ...

Embodiment 2

[0042] A component

[0043]

[0044] B component

[0045]

[0046]

[0047] Add 50 parts of MS-650B and 5 parts of modified graphene slurry into the reaction kettle, heat to 110 degrees and vacuumize for 3 hours, then add 30 parts of MDI-100, 15 parts of H 12MDI (hydrogenated MDI), reacted at 105°C for 3 hours to obtain the semi-prepolymer A component.

[0048] Add component B to the mixing tank in turn and stir evenly, and grind in a sand mill for 2.5 hours to obtain component B.

[0049] Components A and B are sprayed with a high-pressure sprayer, and the two components of A and B are transported to the main engine through a pump, heated and pressurized and accurately measured, mixed evenly in a dynamic mixing chamber, sprayed on the surface and cured quickly forming. According to the conditions specified in GB9278, the performance measurement was performed after being placed for 7 days.

[0050] Table 2 performance measurement results

[0051] Tensile...

Embodiment 3

[0053] Prescription is with embodiment 2

[0054] The components A and B of Example 2 are poured with a low-pressure pouring machine. After the two components enter the proportional pump through the storage tank and are accurately metered, they are mixed in a high-speed spiral at the pouring head, extruded or injected onto a plastic formwork for solidification and molding.

[0055] According to the conditions specified in GB9278, the performance measurement was performed after being placed for 7 days.

[0056] Table 3 performance measurement results

[0057] Tensile Strength 42MPa Elongation 350％ Surface dry time 18S tear strength 123kN / m Low temperature resistance No cracking at -50℃

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Abstract

The invention relates to an anti-explosion impact polyurea coating and a preparation method thereof, and belongs to the field of coating compositions. The anti-explosion impact polyurea coating comprises two components A and B, wherein the component A is a semi-prepolymer component obtained by reacting 40 to 60 parts of isocyanate, 40 to 60 parts of polyester polyol and 1 to 10 parts of graphene paste; the component B comprises 10 to 30 parts of a chain extender, 15 to 30 parts of polyether polyol, 40 to 60 parts of amino-terminated polyether, 1 to 10 parts of graphene paste, a pigment and a trace amount of an auxiliary. The polyurea coating has the performance of strong physical strength, high shear resistance, high strength retention under high-speed impact and high-speed large deformation, high low-temperature flexibility and the like, and is applicable to an anti-explosion place.

Description

technical field [0001] The invention relates to a blast-proof impact polyurea coating and a preparation method thereof, belonging to the field of coating compositions. Background technique [0002] Spraying polyurea material has the advantages of no solvent, good film-forming strength, aging resistance of the coating, and quick construction. It is a protective coating with great development potential. It has broad application prospects in the fields of submarine pipeline, buried pipeline anticorrosion, storage tank anticorrosion, concrete protection, waterproof, mine wear resistance, military skin, armor lining, chassis protection, etc. At present, the application of polyurea coating in our country is mainly in the fields of industrial heavy-duty anti-corrosion, building anti-penetration, waterproof, wear-resistant and so on. When polyurea materials are applied to military skins, armor linings, composite armor, bulletproof shields, and bulletproof helmets, the material itse...

Claims

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Application Information

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IPC IPC(8): C09J175/02C09J11/04C08G18/44C08G18/42C08G18/32C08G18/48C08G18/66C08K9/06C08K7/00C08K3/04
CPCC08G18/3234C08G18/3243C08G18/4277C08G18/44C08G18/4829C08G18/6618C08K3/04C08K7/00C08K9/06C09J11/04C09J175/02
Inventor 张安智王宝柱庄绪磊张杰王玲玲
Owner QINGDAO AIR NEW MATERIALS
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