Modified polyformaldehyde composition
A polyoxymethylene composition and polyoxymethylene technology, applied in the field of polymer compositions, can solve problems such as performance defects, and achieve the effects of compensating for the loss of mechanical properties, maintaining properties, inhibiting degradation and recrystallization
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Embodiment 1
[0017] First, 10 parts of graphene and 4 parts of dispersant polyvinylpyrrolidone are pre-mixed and dispersed, and then the graphene-dispersant mixture is mixed with 80 parts of polyoxymethylene, 1 part of light shielding agent zinc oxide and 0.2 part of antioxidant tetrakis (β-( 3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester is mixed in a high-speed mixer, then extruded through a parallel twin-screw mixing extruder, cooled and granulated.
Embodiment 2
[0019] First, 12 parts of graphene and 5 parts of dispersant polyvinylpyrrolidone are pre-mixed and dispersed, and then the graphene-dispersant mixture is mixed with 90 parts of polyoxymethylene, 2 parts of light shielding agent titanium dioxide and 0.3 parts of antioxidant β-(4-hydroxyl Phenyl-3,5-di-tert-butyl) n-octadecyl propionate is mixed in a high-speed mixer, then extruded through a parallel twin-screw mixing extruder, cooled and granulated.
Embodiment 3
[0021] First, 14 parts of graphene and 7 parts of dispersant polyvinylpyrrolidone were pre-mixed and dispersed, and then the graphene-dispersant mixture was mixed with 90 parts of polyoxymethylene, 4 parts of light shielding agent zinc oxide and 0.4 parts of antioxidant 2,6-di The tert-butyl-p-cresol is mixed in a high-speed mixer, then extruded through a parallel twin-screw mixing extruder, cooled and granulated.
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