Double-component aluminum metal anti-corrosion repairing agent and preparation method thereof
A repair agent, two-component technology, applied in the direction of adhesives, adhesive types, adhesive additives, etc., can solve the problems of poor acid and alkali resistance, low cohesive strength, damaged bonding effect, etc., and achieve excellent high temperature resistance , good water resistance, and the effect of improving the bonding effect
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[0019] Example 1
[0020] The preparation and use process of the repair agent of the present invention is as follows:
[0021] (1) Preparation of reinforcing filler (modified attapulgite / nano-silica composite powder):
[0022] (A) Weigh 100g of attapulgite clay with a fineness of 200-400 mesh, put it into 800-1000ml of distilled water, and treat it with 50-100ml of hydrochloric acid with a concentration of 1mol / L at 80-100℃ for 1 to 3 hours while stirring 2-4 hours to prepare the suspension;
[0023] (B) Add 5 to 10 mL of composite active agent to the suspension, add 15 g of nano silica, dropwise add NaOH solution to adjust the pH of the suspension to 6 to 8, and then stir for 2 to 4 hours to prepare the suspension;
[0024] (C) The suspension is subjected to centrifugal treatment at 3500 r / min for 5-10 minutes, and the recovered solids are dried and ground to obtain the modified attapulgite powder.
[0025] (2) Take 30g of tetrahydrofuran and pour it into a mixer, add 20g of E14 type b...
Example Embodiment
[0031] Example 2
[0032] The preparation and use process of the repair agent of the present invention is as follows:
[0033] (1) Preparation of reinforcing filler (modified attapulgite / nano-silica composite powder):
[0034] (A) Weigh 100g of attapulgite clay with a fineness of 200-400 mesh, put it into 800-1000ml of distilled water, treat it with 50-100ml of hydrochloric acid with a concentration of 1mol / L at 80-100℃ for 1 to 3 hours, while stirring 2-4 hours to prepare the suspension;
[0035] (B) Add 5-10mL of composite active agent to the suspension, add 15g of nano-silica, dropwise add NaOH solution to adjust the pH of the suspension to 6-8, and then stir for 2-4 hours to prepare the suspension;
[0036] (C) The suspension is centrifuged at 3500r / min for 5-10 minutes, the recovered solids are dried and ground to obtain the modified attapulgite powder.
[0037] (2) Take 30g of tetrahydrofuran and pour it into the blender, add 25g of E14 type bisphenol A epoxy resin to it, and use ...
Example Embodiment
[0043] Example 3
[0044] The preparation and use process of the repair agent of the present invention is as follows:
[0045] (1) Prepare reinforcing filler according to the method of Example 1.
[0046] (2) Take 35g of tetrahydrofuran and pour it into the blender, add 20g of E44 type bisphenol A epoxy resin to it, and use a cross-knife blender to fully stir, the stirring speed is 3000 rpm, the stirring time is 60 minutes;
[0047] (3) Put 22g modified attapulgite clay powder, 6g nano-zirconia, 6g Tween 20 activator and 0.5g epoxy defoamer into the mixing system of step (1), and stir thoroughly. The stirring time is 2 hours, and the stirred slurry is vacuum defoamed and made into component A for use;
[0048] (4) Put 15g of linear polyamide resin, 15g of methyltriethoxysilane and 3g of alkylethylenediamine into a cross-knife stirrer to fully stir, stirring at 3000 rpm, stirring The time is 60 minutes, and it is made into component B, ready for use;
[0049] (5) Soak the aluminum metal...
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