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
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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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