PA66 composite material and preparation method thereof
A technology of PA66 and composite materials, applied in the field of polymer materials, can solve the problems of insufficient anti-aging properties of PA66, and achieve the effect of improving anti-aging properties, improving anti-aging properties, and increasing the value of promotion.
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[0035] The preparation steps of anti-aging masterbatch include:
[0036] (1) Weigh a certain amount of nano-TiO2 and silane coupling agent KH550, put them in a three-necked flask, and react for 30-40 minutes to obtain modified nano-TiO2;
[0037] (2) Weigh a certain amount of PA66 salt, concentrated phosphoric acid, 3,3,4,4-biphenyltetracarboxylic dianhydride, modified nano-TiO2 and deionized water;
[0038] (3) Combine PA66 salt, concentrated phosphoric acid, 3,3,4,4-biphenyltetracarboxylic dianhydride and nano-TiO 2 Put it into the reactor, stir well, add deionized water, stir again;
[0039] (4) After sealing the lid of the kettle, start to increase the temperature and pressure. When the temperature in the kettle reaches 220°C and the pressure reaches 2.3MPa, keep the temperature and pressure for 3-5h;
[0040] (5) Adjust the pressure and temperature in the kettle, raise the temperature in the kettle to 265°C, drop the pressure to normal pressure, and keep the temperature for 4-6h;
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Example Embodiment
[0050] Example 1
[0051] (1) Weigh 80 parts of PA66, 8 parts of anti-aging masterbatch, 10 parts of POE, 0.1 part of Irganox168 and mix and stir to obtain a mixture;
[0052] (2) Extruding and granulating the mixture obtained in step (1) to obtain PA66 composite material P1.
[0053] Among them, the temperature and screw speed of each zone of the twin-screw extruder are respectively: the temperature of the first zone is 200℃, the temperature of the second zone is 260℃, the temperature of the third zone is 260℃, the temperature of the fourth zone is 260℃, the temperature of the fifth zone is 260℃, and the temperature of the sixth zone is 260℃. The head temperature is 260℃; the screw speed is 200r / min.
Example Embodiment
[0054] Example 2
[0055] (1) Weigh 100 parts of PA66, 12 parts of anti-aging masterbatch, 16 parts of POE, 0.1 part of Irganox168, 0.2 part of Irganox1330, 0.2 part of Irganox1010, mix and stir evenly to obtain a mixture;
[0056] (2) Extruding and granulating the mixture obtained in step (1) to obtain PA66 composite material P2.
[0057] Among them, the temperature and screw speed of each zone of the twin-screw extruder are respectively: the temperature in the first zone is 220°C, the temperature in the second zone is 280°C, the temperature in the third zone is 280°C, the temperature in the fourth zone is 280°C, the temperature in the fifth zone is 280°C, and the temperature in the sixth zone is 280°C. The head temperature is 280℃; the screw speed is 280r / min.
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