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A kind of permeable transparent concrete protective coating and preparation method thereof

A technology for protective coatings and concrete, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of unreasonable structural design of concrete structures, failure to reach expected life, damage, etc., and achieve considerable bond strength and increase compactness. , easy to use effect

Inactive Publication Date: 2015-10-28
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the service capacity and time of concrete will be limited by various environmental conditions. In practical engineering applications, concrete structures often fail due to unreasonable structural design, construction defects, physical, chemical or biological erosion under various environmental conditions, etc. Deterioration occurred during service, and some even failed to reach the expected lifespan and were destroyed

Method used

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  • A kind of permeable transparent concrete protective coating and preparation method thereof
  • A kind of permeable transparent concrete protective coating and preparation method thereof
  • A kind of permeable transparent concrete protective coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0039] Prepare a high-permeability weather-resistant transparent concrete protective coating, the formula is as follows (by weight):

[0040] Table 1 Embodiment 1-2 formula

[0041] Example

1

2

FEVE / part

45

45

Trimeric isocyanate / part

7

20

Butyl acetate / part

35

35

Methyldimethoxysilane / part

9

9

[0042] The preparation method process is:

[0043] (1) Weigh each component material according to the proportion;

[0044] (2) First dilute FEVE with butyl acetate;

[0045] (3) Add isocyanurate and stir for 20 minutes;

[0046] (4) Add methyldimethoxysilane and stir for 10 minutes to mix evenly to obtain the concrete protective coating.

[0047] The prepared protective coating was coated on C20 concrete, and the C20 concrete sample not coated with protective coating was used as a blank control. The performance test results were as follows:

[0048] Table 2 embodiment 1-2 protection performance

...

Embodiment 3

[0053] Prepare a high-permeability weather-resistant transparent concrete protective coating, the formula is as follows (by weight):

[0054] PVDF 50

[0055] Melamine 7

[0056] Xylene 40

[0057] Isobutylsilane 10

[0058] The preparation method process is:

[0059] (1) Weigh each component material according to the proportion;

[0060] (2) First dilute PVDF with xylene;

[0061] (3) Add melamine and stir for 20 minutes;

[0062] (4) Add isobutylsilane and stir for 10 minutes to mix evenly to obtain the concrete protective coating.

[0063] After the coating treatment, the properties of concrete (C50) are as follows:

[0064] Table 3 embodiment 3 protection performance

[0065] Example

Water absorption / mm·min -1 / 2

Penetration depth / mm

3

0.0017

0.86

Blank control (C50)

0.0073

/

[0066] The obtained paint is transparent and viscous liquid in the container, and because of its high permeability, after the paint is h...

Embodiment 4

[0069] Prepare a high-permeability weather-resistant transparent concrete protective coating, the formula is as follows (by weight):

[0070] FEVE 40

[0071] Melamine 7

[0072] Butyl acetate 30

[0073] Isobutylsilane 4

[0074] Methyldimethoxysilane 4

[0075] The preparation method process is:

[0076] (1) Weigh each component material according to the proportion;

[0077] (2) First dilute FEVE with butyl acetate;

[0078] (3) Add melamine and stir for 20 minutes;

[0079] (4) Add isobutylsilane and methyldimethoxysilane, stir for 15 minutes and mix evenly to obtain the concrete protective coating.

[0080] After being treated with this coating, the properties of concrete (C20) are as follows:

[0081] Table 4 embodiment 4 paint protection performance

[0082]

[0083] Carry out experiment according to the proportioning of embodiment 4 and know, the sample water absorption rate of the blank group before the natron is far greater than embodiment 4, illustrate th...

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Abstract

The invention relates to a penetration type transparent concrete protection paint and preparation method thereof, which comprises the following steps: diluting a fluoropolymer by diluents, adding a curing agent, mixing as the first component, and then adding silane which is used as the second component, mixing uniformly; the product is coated on the concrete surface and penetrates into the concrete for combining into one body, thereby forming a deep protection, effectively reducing water absorption of concrete, increasing packing of concrete surface, improving resistance to chemical corrosion, resistance to carbonization and resistance to frost, especially blocking the channel by which the extraneous moisture can enter into the internal part of the concrete, substantially improving waterproofness of the concrete, and effectively prolonging the service life.

Description

technical field [0001] The invention relates to a permeable transparent concrete protective coating and a preparation method thereof, belonging to the field of concrete surface protective coatings. Background technique [0002] Concrete is currently the most widely used man-made building structure material. With the rapid development of modern economy and science and technology, the scope of demand for concrete has been expanded to the construction of ports, highways, bridges, and municipal modernization projects. In general, concrete structures have good long-term performance with high durability. However, the service capacity and time of concrete will be limited by various environmental conditions. In practical engineering applications, concrete structures often fail due to unreasonable structural design, construction defects, physical, chemical or biological erosion under various environmental conditions, etc. Deterioration occurred during service, and some even failed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/12C09D127/18C09D127/16C09D127/14C09D7/12C09D175/04C04B41/49
Inventor 蒋正武袁政成邓子龙黄青云
Owner TONGJI UNIV
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