Self-healing polyurethane waterproof coating and preparation method thereof
A polyurethane waterproofing and coating technology, applied in polyurea/polyurethane coatings, wax coatings, coatings, etc., can solve the problems of weak waterproof coating strength and inability to be used in combination, and achieve high solid content, good self-healing properties, and adhesion powerful effect
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Embodiment 1
[0058] See Table 1 for the proportions of the raw materials of the self-healing polyurethane waterproof coating in this example.
[0059] The raw material composition of table 1 embodiment 1 self-healing polyurethane waterproof coating
[0060]
[0061]
Embodiment 2
[0063] Table 2 shows the raw material component ratio of the self-healing polyurethane waterproof coating in this example.
[0064] The raw material composition of table 2 embodiment 2 self-healing polyurethane waterproof coating
[0065]
Embodiment 3
[0067] The proportions of the raw materials of the self-healing polyurethane waterproof coating in this example are shown in Table 3.
[0068] The raw material composition of table 3 embodiment 3 self-healing polyurethane waterproof coating
[0069]
[0070]
[0071] The preparation method of the self-healing polyurethane waterproof coating of embodiments 1-3 is as follows:
[0072] Preparation process of component A: According to the compositions in Tables 1 to 3, add terpene phenolic resin, chlorinated paraffin, poly-1,4-butanediol adipate diol HKP-456, and polyether triol accurately. DL-3000D was heated to (115±2)℃, and vacuumed to (-0.095~-0.1)MPa. After 2 hours, the vacuum was stopped. When the temperature dropped to 70℃, TDI-80 and MDI were added accurately, and the temperature was increased to 80°C, react for 2h, when the temperature is lowered to 70°C, add catalyst T-12, react for 30min, cool down to 60°C and vacuumize to (-0.095~-0.1)MPa, and discharge after 10...
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