Photochromic self-repaired intelligent nylon 66 and preparation method thereof
A photochromic and self-healing technology, applied in the field of photochromic self-healing intelligent nylon 66 and its preparation, nylon materials, to achieve the effects of enhancing stress capacity, high yield, sensitive color changing performance and self-healing performance
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Embodiment 1
[0072] 1) Weigh 1.60 g of pyrimidinone derivatives, 3.3 g of hexamethylene diisocyanate, and 12.4 mg of dibutyltin dilaurate, and react at 70° C. for 12 hours under nitrogen atmosphere to obtain 4.2 g of diisocyanate containing ureido pyrimidone structure.
[0073] Among them, the pyrimidinone derivatives used in this example are the structural formula shown in the description formula A and the specific synthetic route disclosed in the description, and the accompanying drawings figure 1 and figure 2 Its data representation map is given, combined with figure 1 It can be seen that various hydrogen atoms in the molecular structural formula shown in formula A have been correspondingly characterized on the spectrum, combined with figure 2 It can be seen that the various characteristic peaks in the molecular structural formula shown in formula A have been correspondingly characterized on the spectrum, which also shows that the pyrimidinone derivative of this example was prepared ...
Embodiment 2
[0078] 1) Weigh 1.9 g of pyrimidone derivatives, 3.9 g of hexamethylene diisocyanate, and 18 mg of dibutyltin dilaurate, and react at 70° C. for 12 hours under nitrogen atmosphere to obtain 5.2 g of diisocyanate containing ureido pyrimidone structure.
[0079] 2) Weigh 0.71g of spiropyran derivative, 5.2g of diisocyanate containing ureidopyrimidinone structure, 8.4mg of dibutyltin dilaurate, and 15ml of nitrogen nitrogen dimethylformamide. The reaction temperature is 25°C. After 1 hour of reaction Purification waited till product 5.15g.
[0080] 3) Weigh 62.5g of nylon 66 brine slurry (mass fraction 80%), 0.12g of hexamethylenediamine, add it to a three-necked flask, feed nitrogen to remove the oxygen in the system, remove the nitrogen after 30min and seal the system , and then heated to 200°C. After 2 hours of reaction, the temperature of the system was raised to 270°C, and the system was exhausted and depressurized. After the melt in the three-necked flask had obvious rod cl...
Embodiment 3
[0083] 1) Weigh 1.9 g of pyrimidone derivatives, 3.9 g of hexamethylene diisocyanate, and 18 mg of dibutyltin dilaurate, and react at 70° C. for 12 hours under nitrogen atmosphere to obtain 5.2 g of diisocyanate containing ureido pyrimidone structure.
[0084] 2) Weigh 0.71g of spiropyran derivative, 5.2g of diisocyanate containing ureidopyrimidinone structure, 8.4mg of dibutyltin dilaurate, and 15ml of nitrogen nitrogen dimethylformamide. The reaction temperature is 25°C. After 1 hour of reaction Purification waited till product 5.15g.
[0085] 3) Weigh 62.5g of nylon 66 brine slurry (mass fraction 80%), and 0.2g of hexamethylenediamine, add it to a three-necked flask, feed nitrogen to remove the oxygen in the system, remove the nitrogen after 30min and seal the system , and then heated to 200°C. After 2 hours of reaction, the temperature of the system was raised to 270°C, and the system was exhausted and depressurized. After the melt in the three-necked flask had obvious rod...
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