Self-repairing polymer
A polymer and self-repairing technology, which is applied in the field of self-repairing polymers, can solve the problems of inability to realize self-repair, limited range of matrix selection, etc., and achieve the effect of uniform distribution of repairing agents, low cost and high repairing efficiency
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[0015] Example 1
[0016] Preparation of microcapsules containing vinyl monomers:
[0017] 11.36g of melamine, 24.3g of 37% formaldehyde solution and 30ml of deionized water were added to the three-necked flask, and reacted at 65°C and pH 8 for 25 minutes to obtain the melamine-formaldehyde prepolymer solution . After natural cooling, add 0.4 g of sodium dodecylbenzene sulfonate, 0.12 g of polyvinyl alcohol and 41 g of glycidyl methacrylate, and emulsify for 30 minutes at 400 rpm. Slowly adjust the pH of the reaction system to about 4.1 with 5% glacial acetic acid, while slowly raising the temperature to 65°C, and maintain the reaction temperature for 3 hours. The reaction solution was cooled to room temperature, washed with water to leave a layer of product, and filtered.
Example Embodiment
[0018] Example 2
[0019] Add 25g of methyl methacrylate and 1.055g of ethyl acetate into a three-necked flask filled with nitrogen to make it fully dissolved, then continue to pass nitrogen, add 0.071g of azobisisoheptonitrile and 0.080g of dithiobenzene in sequence The mixture of isobutyronitrile formate and cuprous chloride is stirred uniformly at a speed of 400-600r / min and reacted at 27°C for 3 hours. Take 3 g of the microcapsules prepared in Example 1, uniformly disperse into the above product at room temperature, mix, and cure at room temperature for 72 hours after degassing.
Example Embodiment
[0020] Example 3
[0021] Add 25g of methyl methacrylate and 1.055g of ethyl acetate into a three-necked flask with nitrogen to make it fully dissolved, then continue to flow with nitrogen, add 0.085g of styrene and 0.065g of dithiobenzoic acid isobutyronitrile in sequence The mixture of ester and cuprous chloride is stirred uniformly at a speed of 400-600r / min and reacted at 27°C for 3 hours. Take 3 g of the microcapsules prepared in Example 1, uniformly disperse into the above product at room temperature, mix, and cure at room temperature for 48 hours after degassing.
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