A kind of epoxy resin polyamine curing agent and a kind of water-based epoxy curing agent emulsion
A water-based epoxy and epoxy resin technology, which is applied in the field of epoxy resin polyamine curing agent and water-based epoxy curing agent emulsion, can solve the problems of difficult emulsification of curing agent, affecting curing uniformity, and short construction period. Improved compatibility, good curing effect, low VOC content
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Embodiment 1
[0046] 1. Preparation of emulsifier:
[0047]Add 39g polyethylene glycol 6000 (PEG6000) and 3g epoxy resin E-44 into the reaction kettle, heat to 85°C under nitrogen atmosphere, stir to mix the two evenly, add 0.2g N,N-dimethylbenzyl Amine catalyst, constant temperature reaction at 135°C. After 480 minutes of constant temperature reaction, the temperature was lowered to 90°C, 1.8 g of octadecylamine was added, and the reaction was carried out for 240 minutes to obtain a white waxy product emulsifier.
[0048] The molecular formula of the emulsifier is: in
[0049] R is
[0050] 2. Preparation of polyamine curing agent for epoxy resin:
[0051] Add the mixture of 3.5g diethylenetriamine and 4.5g m-xylylenediamine in the reactor equipped with stirrer, condenser and thermometer. Dissolve epoxy resin 14.5g E-44 with 2.4g ethylene glycol monobutyl ether and 1.2g n-butanol at 30dm 3 h -1 Add the dissolved epoxy resin to the polyamine mixture, stir and heat up to 65°C, and ...
Embodiment 2
[0061] 1. Preparation of emulsifier:
[0062] Add 26g polyethylene glycol 4000 and 2.6g epoxy resin E-51 to 250cm 3 In a reaction kettle, under a nitrogen atmosphere, heat to 85°C, stir to mix the two evenly, add 0.2g N,N-dimethylbenzylamine as a catalyst, and carry out a constant temperature reaction at 135°C. After 480 minutes of constant temperature reaction, the temperature was lowered to 90°C, 1.8 g of octadecylamine was added, and the reaction was carried out for 240 minutes to obtain a white waxy product emulsifier.
[0063] The molecular formula of the emulsifier is: in
[0064] R is
[0065] 2. Preparation of polyamine curing agent for epoxy resin:
[0066] Add the mixture of 3.5g diethylenetriamine and 4.5g m-xylylenediamine in the reactor equipped with stirrer, condenser and thermometer. Dissolve epoxy resin 12.6g E-51 with 2.1g ethylene glycol monobutyl ether and 1.1g n-butanol at 30dm 3 h -1 Add the dissolved epoxy resin to the polyamine mixture, stir an...
Embodiment 3
[0072] 1. Preparation of emulsifier:
[0073] Add 65g of polyethylene glycol 10000 and 3.0g of epoxy resin E-44 into the reaction kettle, then heat to 85°C under nitrogen atmosphere, stir to mix the two evenly, add 0.2g of N,N-dimethylbenzyl Amines were used as catalysts, and a constant temperature reaction was carried out at 135°C. After constant temperature reaction for 480 minutes, the temperature was lowered to 90°C, 1.8 g of octadecylamine was added, and the reaction was carried out for 240 minutes to obtain a white waxy emulsifier.
[0074] The molecular formula of the emulsifier is: in
[0075] R is
[0076] 2. Preparation of polyamine curing agent for epoxy resin:
[0077] Add the mixture of 5.0g triethylenetetramine and 4.5g m-xylylenediamine in the reaction kettle equipped with stirrer, condenser and thermometer. Dissolve 14.5g of epoxy resin E-44 in 2.4g of ethylene glycol monobutyl ether and 1.2g of n-butanol in 30dm 3 h -1 Add the dissolved epoxy resin t...
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