Hexagonal boron nitride/polypropylene polymer composite and preparation method
A technology of hexagonal boron nitride and composite materials, which is applied in the field of hexagonal boron nitride/polypropylene polymer composite materials and its preparation, can solve the problems of poor insulation performance, complicated processing technology, and low thermal conductivity, and achieve bending strength and flexural modulus improvement, the preparation method is simple and easy to operate, and the effect of excellent mechanical properties
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[0024] Example 1 Hexagonal boron nitride / polypropylene polymer composite material
[0025] (1) The preparation method is as follows:
[0026] 1) Hexagonal boron nitride pretreatment: Place the hexagonal boron nitride in a vacuum drying oven at 90°C for 8 hours. Then add 30% hydrogen peroxide to the dried hexagonal boron nitride to prepare a mixed solution with a concentration of 0.1g / mL, sonicate for 30 minutes, and put it into the reactor at 100°C and stir for 24 hours. After the reactor is cooled to room temperature, The reactant was filtered, washed with deionized water to neutrality, and then dried in a vacuum drying oven at 50°C for 24 hours for use.
[0027] 2) According to the following ratio, put the treated hexagonal boron nitride, polypropylene, antioxidant, lubricant and compatibilizer into a high-speed mixer and mix for 3-5 minutes, and put the mixed materials into the same direction double Melt extrusion in a screw extruder. The extruder adopts four-stage heating, and...
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[0033] Example 2 Hexagonal boron nitride / polypropylene polymer composite material
[0034] The preparation method is the same as that of Example 1, except that the mass ratio of hexagonal boron nitride and polypropylene is 1:15. The hexagonal boron nitride / polypropylene polymer composite material obtained in this example was tested for mechanical properties and thermal conductivity. The results are shown in Table 1.
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[0035] Example 3 Hexagonal boron nitride / polypropylene polymer composite material
[0036] The preparation method is the same as that in Example 1, except that the mass ratio of hexagonal boron nitride and polypropylene is 1:10. The hexagonal boron nitride / polypropylene polymer composite material obtained in this example was tested for mechanical properties and thermal conductivity. The results are shown in Table 1.
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