Damp-heat-resistant high-strength single-component polyurethane primer-free adhesive sealant and preparation method thereof
A bonding and sealing, high-strength technology, applied in polyurea/polyurethane adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve products that are difficult to extrude, increase in viscosity, and seal Glue thickening and other problems, to achieve the effect of enhanced physical and mechanical properties, enhanced moisture and heat resistance, and high mechanical properties
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Embodiment 1
[0065] A heat-resistant, high-strength one-component polyurethane primer-free adhesive sealant, composed of the following raw materials: hydroxyl-terminated polyether polyol 8kg, first polyester polyol 3kg, first isocyanate 4kg, first plasticizer 12kg, 15kg of white carbon black modified polyurethane prepolymer, 0.5kg of water scavenger, 18kg of inorganic filler, 1kg of resin filler, 1kg of auxiliary agent and 0.01kg of first catalyst;
[0066] The hydroxyl-terminated polyether polyol is a trifunctional polyoxypropylene ether with an average molecular weight of 3000;
[0067] The first polyester polyol is a difunctional polyester polyol with an average molecular weight of 500;
[0068] The first isocyanate is diphenylmethane diisocyanate;
[0069] The first plasticizer is epoxy soybean oil;
[0070] The dewatering agent is p-toluenesulfonyl isocyanate;
[0071] The inorganic filler is acetylene carbon black;
[0072] The resin filler is a polyphenol type glycidyl ether epoxy resin;
[007...
Embodiment 2
[0082] A heat-resistant, high-strength one-component polyurethane primer-free adhesive sealant, consisting of the following raw materials: hydroxyl-terminated polyether polyol 15kg, first polyester polyol 10kg, first isocyanate 5kg, first plasticizer 22kg, 35kg of white carbon black modified polyurethane prepolymer, 1kg of water scavenger, 25kg of inorganic filler, 3kg of resin filler, 2kg of auxiliary agent and 0.4kg of first catalyst;
[0083] The hydroxyl-terminated polyether polyol is a trifunctional polyoxyethylene ether with a molecular weight of 6000;
[0084] The first polyester polyol is a bifunctional polyester polyol with a molecular weight of 3000;
[0085] The first isocyanate is toluene diisocyanate;
[0086] The first plasticizer is dipropylene glycol dibenzoate;
[0087] The dewatering agent is calcium oxide;
[0088] The inorganic filler is light calcium carbonate;
[0089] The resin filler is terpene resin;
[0090] The auxiliary agent is calcium hydroxide;
[0091] The f...
Embodiment 3
[0099] A heat-resistant, high-strength one-component polyurethane primer-free adhesive sealant, composed of the following raw materials: hydroxyl-terminated polyether polyol 10kg, first polyester polyol 5kg, first isocyanate 4.2kg, first plasticizing 18kg of white carbon black modified polyurethane prepolymer, 0.6kg of water scavenger, 20kg of inorganic filler, 1.5kg of resin filler, 1.2kg of auxiliary agent and 0.1kg of first catalyst;
[0100] The hydroxyl-terminated polyether polyol is a trifunctional polyoxypropylene ether with a molecular weight of 4000;
[0101] The first polyester polyol is a difunctional polyester polyol with a molecular weight of 1000;
[0102] The first isocyanate is composed of isophorone diisocyanate and hexamethylene diisocyanate in a mass ratio of 1:1;
[0103] The first plasticizer is composed of diisodecyl phthalate and diisononyl phthalate in a mass ratio of 1:2;
[0104] The dewatering agent is composed of p-toluenesulfonyl isocyanate and calcium oxid...
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