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Concrete bottom coating of concrete work protection polyurea material

A technology for concrete and polyurea, applied in the direction of polyurea/polyurethane paint, coating, filling slurry, etc., can solve the problem of poor effect in humid environment, and achieve the effects of superior performance, convenient use and simple preparation method

Inactive Publication Date: 2017-06-20
CHANGJIANG SURVEY PLANNING DESIGN & RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The current primer system can basically satisfy the adhesion of polyurea coating in dry environment, but the effect is not good for wet environment

Method used

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  • Concrete bottom coating of concrete work protection polyurea material
  • Concrete bottom coating of concrete work protection polyurea material
  • Concrete bottom coating of concrete work protection polyurea material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A concrete primer of a hydraulic protection polyurea material, the A component material consists of 43 parts by weight of MDI-50, 43 parts of MDI-100, 76 parts of PPG-2000, 38 parts of PCDL-2000, 14 parts of KH-560, 86 parts of butyl acetate; the B component material is composed of 26.7 parts of MOCA, 31 parts of Unilink 4200, 2 parts of antioxidant 1076, and 90.3 parts of butyl acetate.

[0031] The concrete primer for preparing the described a kind of hydraulic protection polyurea material is characterized in that: it comprises the following process steps:

[0032] Step 1: Preparation of component A materials: Weigh the above-mentioned polyol by weight, add the polyol into the container, turn on the agitator; heat to 110-120°C, and vacuum it with a vacuum pump, and the vacuum degree is -0.1-- Dehydration at 0.08MPa to remove the raw material water until the moisture content of the raw material drops to less than or equal to 3 / 10,000; cool the temperature of the liquid...

Embodiment 2

[0036] A concrete primer of a hydraulic protection polyurea material, the A component material consists of 43 parts by weight of MDI-50, 43 parts of MDI-100, 76 parts of PPG-2000, 38 parts of PCDL-2000, 14 parts of KH-560, 86 parts of butyl acetate; the B component material is composed of 35.5 parts of MOCA, 20.5 parts of Unilink 4200, 2 parts of antioxidant 1076, and 92 parts of butyl acetate.

[0037] Its preparation method is identical with embodiment 1.

Embodiment 3

[0039] A concrete primer of a hydraulic protective polyurea material, the A component material consists of 70 parts by weight of TDI, 130 parts of PPG-1000, 20 parts of KH-550, 110 parts of butyl acetate; The B component material is composed of 40 parts by weight of Desmophen NH 1420, 4 parts of antioxidant 245, and 80 parts of ethyl acetate.

[0040] Its preparation method is identical with embodiment 1.

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Abstract

The invention discloses a concrete bottom coating of a concrete work protection polyurea material. The concrete bottom coating comprises an A ingredient material and a B ingredient material, wherein the A ingredient material is prepared from 70 to 134 parts of isocyanate, 80 to 150 parts of polylol, 2 to 20 parts of coupling agents and 50 to 150 parts of solvents through being metered in parts by weight; the B ingredient material is prepared from 25 to 75 parts of chain expanding agents, 1 to 5 parts of antioxidants and 50 to 140 parts of solvents through being metered in parts by weight. The defects that the attachment force of the existing bottom coating is greatly reduced or lost in the long-time water soaking or high-humidity state, and a polyurea material bulges and falls off are overcome. The concrete bottom coating has the advantages that the use is convenient; the performance is excellent.

Description

technical field [0001] The invention relates to the field of hydraulic concrete surface protection, more specifically, it is a concrete primer of polyurea material for hydraulic protection. Background technique [0002] Polyurea material is an environmentally friendly material that cures quickly and is easy to construct; it has high tensile strength, good flexibility, waterproof, anti-corrosion, wear-resistant, wet-slip resistance, thermal shock resistance, low temperature resistance and decorative properties. Good and excellent performance, more and more people are favored, and it is unique in large-area rapid coating of waterproof coating, anti-corrosion coating and wear-resistant coating; polyurea material has excellent physical properties and anti-corrosion properties It is the first choice material in waterproof and anti-corrosion engineering; at present, spray polyurea coating is widely used in the protection of concrete substrates. [0003] Spraying polyurea elastome...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/34C09D175/08C09D175/04C08G18/66C08G18/48C08G18/44C08G18/32
Inventor 谭界雄史立彤刘锐姜鹏波卢建华高大水彭瑞
Owner CHANGJIANG SURVEY PLANNING DESIGN & RES
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