Self-repairing waterborne epoxy/asphalt compound waterproof coating and preparation method thereof
A technology of water-based epoxy and waterproof coatings, applied in the field of coatings, can solve the problems of various raw materials and additives, inapplicability to the field of coatings, and cumbersome preparation processes, etc., and achieve good waterproof and anti-seepage effects, excellent self-healing performance, and repair effects Good results
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[0038] Example 1
[0039] The self-repairing water-based epoxy / asphalt composite waterproof coating described in this embodiment includes the following raw materials in parts by mass:
[0040] 31 parts of anionic nitrile latex, 35 parts of anionic emulsified petroleum pitch, 7 parts of water-based epoxy emulsion, 7 parts of water-based epoxy curing agent, 1.5 parts of talc, 0.5 parts of antifoaming agent, 18 parts of microcapsule dispersion;
[0041] The microcapsule dispersion is composed of the following raw materials in parts by mass:
[0042] 36 parts of polyoxypropylene polyol N220, 64 parts of MDI-50, super absorbent, molten paraffin;
[0043] The preparation method of the microcapsule dispersion is completed according to the following steps:
[0044] The first step, preparation of polyurethane prepolymer: Weigh 36 parts of polyoxypropylene polyol N220 in the above mass parts and place in the reactor, dehydrate at 120℃, -0.09Mpa for 2 hours, and cool down to 50℃ Then add 64 parts ...
Example Embodiment
[0058] Example 2
[0059] The self-repairing water-based epoxy / asphalt composite waterproof coating described in this embodiment includes the following raw materials in parts by mass:
[0060] 19 parts of anionic nitrile latex, 38 parts of anionic emulsified petroleum pitch, 9 parts of water-based epoxy emulsion, 9 parts of water-based epoxy curing agent, 3.5 parts of talc, 0.5 part of antifoaming agent, 21 of microcapsule dispersion;
[0061] The microcapsule dispersion is composed of the following raw materials in parts by mass:
[0062] 36 parts of polyoxypropylene polyol N220, 64 parts of MDI-50, super absorbent, molten paraffin;
[0063] The preparation method of the microcapsule dispersion is completed according to the following steps:
[0064] The first step, preparation of polyurethane prepolymer: Weigh 36 parts of polyoxypropylene polyol N220 in the above mass parts and place in the reactor, dehydrate at 120℃, -0.09Mpa for 2 hours, and cool down to 50℃ Then add 64 parts of MDI-...
Example Embodiment
[0078] Example 3
[0079] The self-repairing water-based epoxy / asphalt composite waterproof coating described in this embodiment includes the following raw materials in parts by mass:
[0080] 30 parts of anionic nitrile latex, 35.5 parts of anionic emulsified petroleum pitch, 7 parts of water-based epoxy emulsion, 7 parts of water-based epoxy curing agent, 1.5 parts of talc, 0.5 parts of antifoaming agent, 18.5 parts of microcapsule dispersion;
[0081] The microcapsule dispersion is composed of the following raw materials in parts by mass:
[0082] 36 parts of polyoxypropylene polyol N220, 64 parts of MDI-50, super absorbent, molten paraffin;
[0083] The preparation method of the microcapsule dispersion is completed according to the following steps:
[0084] The first step, preparation of polyurethane prepolymer: Weigh 36 parts of polyoxypropylene polyol N220 in the above mass parts and place in the reactor, dehydrate at 120℃, -0.09Mpa for 2 hours, and cool down to 50℃ Then add 64 pa...
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