Moisture-proof lead-free soldering nylon 46 composite material and preparation method thereof

[0034] This embodiment is composed of the following components by weight percentage: 89.2% of PA46 resin, 9.9% of PPO resin, 0.2% of each of antioxidants 1010 and 168, and 0.5% of lubricant.

[0035] Composite materials were prepared by the following methods:

[0036] a. Weigh various raw materials according to the above-mentioned weight fractions, and dry each component; wherein PA46 resin is dried at 100°C for 12 hours;

[0037] b. Add the dried PA46 resin, PPO resin and other raw materials into the high-speed mixer and mix evenly;

[0038] c. Add the uniformly mixed material to a twin-screw extruder to extrude and granulate; The temperature of each section is set as follows: the temperature in the first zone is 280°C, the temperature in the second zone is 285°C, the temperature in the third zone is 295°C, the temperature in the fourth zone is 295°C, the temperature in the fifth zone is 300°C, the temperature in the sixth zone is 295°C, the temperature in the seventh zone i...

[0040] The components of Examples 2 to 4 are expressed by weight percentage, as shown in Table 1.

[0041] Composite materials were prepared by the following methods:

[0042] a. Weigh various raw materials according to the above weight fractions, and dry each component, wherein PA46 resin is dried at 110°C for 8 hours;

[0043] b. Add the dried PA46 resin, PPO resin and other raw materials into the high-speed mixer and mix evenly;

[0044] c. Add the uniformly mixed material to the twin-screw extruder for extrusion and granulation, and the alkali-free long fiber is added from the middle section; the process conditions of the twin-screw extruder are: the screw length-to-diameter ratio is 40, and the screw speed is 240r / min; the temperature of each section of the twin-screw extruder is set as follows: the temperature of the first zone is 280°C, the temperature of the second zone is 290°C, the temperature of the third zone is 290°C, the temperature of the fourth zone is 295°C,...

[0046] The components of Examples 5 to 8 are expressed by weight percentage, as shown in Table 1.

[0047] Composite materials were prepared by the following methods:

[0048] a. Weigh various raw materials according to the above weight fractions, and dry each component, wherein PA46 resin is dried at 105°C for 10 hours;

[0049] b. Add the dried PA46 resin, PPO resin and other raw materials into the high-speed mixer and mix evenly;

[0050]c. Add the uniformly mixed material to the twin-screw extruder to extrude and granulate, and the alkali-free long fiber is added from the middle section; the process conditions of the twin-screw extruder are: the screw length-to-diameter ratio is 40, and the screw speed is 260r / min; the temperature of each section of the twin-screw extruder is set as follows: the temperature of the first zone is 280°C, the temperature of the second zone is 290°C, the temperature of the third zone is 295°C, the temperature of the fourth zone is 295°C, the...