High-iron special flame-resistant polyurethane waterproof coating and preparation method thereof
A polyurethane waterproof and coating technology, which is applied in polyurea/polyurethane coatings, fireproof coatings, coatings, etc., can solve the problems of non-fireproof, flame-retardant, low-temperature flexibility, etc., and achieve easy end closure, low human toxicity, and good extensibility Effect
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[0044] Example 1
[0045] Component A: 40 parts of polyether polyol N220
[0046] 35 parts of polyether polyol N330
[0047] Diphenylmethane diisocyanate (MDI) 22 parts
[0048] Component B: 35 parts of liquid filler (petroleum resin C5)
[0049] Compound curing agent (MOCA / N220) 45 parts (7N MOCA / 1N OH )
[0050] Powder filler (light calcium 800 mesh) 25 parts
[0051] Catalyst organotin prepolymer 0.01%
[0052] Ultraviolet absorber UV531, 1 part of B material
[0053] Antioxidant 264, 1 part of B material
[0054] Flame retardant chlorinated paraffin-70, 12 parts
[0055] 10 parts of dibutyl phthalate
[0056] Preparation:
[0057] a. In a jacketed reactor with stirring, add mixed polyether (N220, N330), heat it to (105±5)°C for vacuum dehydration for 1h, then drop it to below 60°C, add metered MDI, and react After 30 minutes, continue to heat up to (70±5)°C, react at a constant temperature for 3h, cool down to below 60°C, discharge and pack, and obtain a component A isocyanate group-ter...
Example Embodiment
[0062] Example 2
[0063] A component:
[0064] Polyether polyol N220 20 parts
[0065] Polyether polyol N330 60 parts
[0066] 28 parts of diphenylmethane diisocyanate (MDI)
[0067] B component:
[0068] Liquid filler (petroleum resin C5) 30 parts
[0069] Compound vulcanizing agent (MOCA / N220) 45 parts (7N MOCA / 1N OH )
[0070] Powder filler (light calcium 800 mesh) 25 parts
[0071] Catalyst organotin 0.01% of prepolymer
[0072] Ultraviolet absorber UV531, 3% of B material
[0073] Antioxidant 264, 5% of B material
[0074] Flame retardant chlorinated paraffin-70, 15 parts
[0075] 8 parts of dioctyl phthalate
[0076] The preparation method is the same as in Example 1.
Example Embodiment
[0077] Example 3
[0078] A component:
[0079] Polyether polyol N220 60 parts
[0080] Polyether polyol N330 20 parts
[0081] Diphenylmethane diisocyanate (MDI) 35 parts
[0082] B component:
[0083] Liquid filler (petroleum resin C5) 35 parts
[0084] Compound vulcanizing agent (MOCA / N220) 60 parts (9N MOCA / 1N OH )
[0085] Powder filler (light calcium 800 mesh) 25 parts
[0086] Catalyst organotin 0.01% of prepolymer
[0087] Ultraviolet absorber UV531, 2% of B material
[0088] Antioxidant 264, 5% of B material
[0089] Flame retardant chlorinated paraffin-70, 12 parts
[0090] 10 parts of dioctyl phthalate
[0091] The preparation method is the same as in Example 1.
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