Cardanol modified amine epoxy resin curing agent as well as preparation method and application thereof
A technology for amine epoxy resin and resin curing, which is applied in the field of cardanol-modified amine epoxy resin curing agent and its preparation, and can solve problems such as limited application
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Embodiment 1
[0027] 1. Add 30g of cardanol and 25g of cardanol into a round bottom flask, start stirring, raise the temperature to 40°C, add 4g of sodium hydroxide particles; after the dissolution is complete, raise the temperature to 60°C, slowly add 0.56g of chloroacetic acid catalyst, acid catalyst After dissolving, raise the temperature to 90°C, keep it warm for 2 hours, let it stand still, separate the liquid and evacuate to obtain the intermediate product;
[0028] 2. Raise the temperature of the intermediate product obtained in step 2 to 40°C, start stirring, control the temperature not higher than 50°C, slowly add 35g of formaldehyde solution dropwise (after 20 minutes), then slowly add 51.5g of diethylenetriamine, and raise the temperature to 120°C , keep it warm for 30 minutes, then raise the temperature to 140°C, keep it warm for 30 minutes, then raise the temperature to 170°C, keep it warm for 50 minutes, then cool down to 90°C after the reaction is over, decompress and vacuum d...
Embodiment 2
[0030] 1. Add 30g of cardanol and 25g of cardanol into a round bottom flask, start stirring, raise the temperature to 40°C, add 4g of sodium hydroxide particles; after the dissolution is complete, raise the temperature to 60°C, slowly add 0.56g of chloroacetic acid catalyst, acid catalyst After dissolving, raise the temperature to 90°C, keep it warm for 2 hours, let it stand still, separate the liquid and evacuate to obtain the intermediate product;
[0031] 2. Raise the temperature of the intermediate product obtained in step 2 to 40°C, start stirring, control the temperature not higher than 50°C, slowly add 35g of formaldehyde solution dropwise (after 20 minutes), then slowly add 59.8g of triethylenetetramine, and raise the temperature to 120°C , keep it warm for 30 minutes, then raise the temperature to 140°C, keep it warm for 30 minutes, then raise the temperature to 170°C, keep it warm for 50 minutes, then cool down to 90°C after the reaction, and depressurize and vacuum d...
Embodiment 3
[0033] 1. Add 30g of cardanol and 25g of cardanol into a round bottom flask, start stirring, raise the temperature to 40°C, add 4g of sodium hydroxide particles; after the dissolution is complete, raise the temperature to 60°C, slowly add 0.56g of chloroacetic acid catalyst, acid catalyst After dissolving, raise the temperature to 90°C, keep it warm for 2 hours, let it stand still, separate the liquid and evacuate to obtain the intermediate product;
[0034] 2. Raise the temperature of the intermediate product obtained in step 2 to 40°C, start stirring, control the temperature not higher than 50°C, slowly add 35g of formaldehyde solution dropwise (20min to finish), then slowly add 36.0g of diethylenetriamine and 27.2g of triethylene Tetramine, heat up to 120°C, keep warm for 30 minutes, then heat up to 140°C, keep warm for 30 minutes, then heat up to 170°C, keep warm for 50 minutes, cool down to 90°C after the reaction, and depressurize and vacuum dehydrate at this temperature ...
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