Long-acting broad-spectrum antibacterial polyethylene material and preparation method thereof
A polyethylene, broad-spectrum technology, applied in the field of polyethylene material and its preparation in the rotational molding production process, can solve the problems that polyethylene does not have antibacterial and mildew proof, no antibacterial polyethylene material, etc., and achieves excellent durability and excellent antibacterial properties. function, ensure the effect of dispersion
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Embodiment 1
[0034] Take Sinopec polyethylene 7149U (linear low density polyethylene, density 0.934g / cm 3 , melt flow rate 4.5g / 10min), nano-titanium dioxide, paraben, oxidized polyethylene wax, silane coupling agent, antioxidant, according to the total mass of 100 parts, the mass ratio of each raw material component is poly Ethylene: nano titanium dioxide: paraben: oxidized polyethylene wax: silane coupling agent: antioxidant=93.2:2:3:0.5:1:0.3.
[0035] Heat oxidized polyethylene wax to 80°C as a grinding and dispersing agent for nano-titanium dioxide in proportion to nano-titanium dioxide and grind nano-titanium dioxide on a constant temperature grinder for 2 hours to form a nano-material with an average particle size of 205nm; then add each raw material component Mixer, mixing time 10min; melt and blend the mixed materials with a twin-screw extruder, extrude and granulate, extrusion process parameters: melt temperature is 190°C, screw speed is 200rpm; finally use a plastic mill Grindi...
Embodiment 2
[0038] Take Sinopec polyethylene 335HL (metallocene catalyzed polyethylene, density 0.936g / cm 3 , melt flow rate 5.5g / 10min), nano-titanium dioxide, paraben ester, oxidized polyethylene wax, silane coupling agent, antioxidant, according to the total mass parts as 100 parts, the mass ratio of each raw material component is poly Ethylene: nano titanium dioxide: paraben: oxidized polyethylene wax: silane coupling agent: antioxidant=95.6:1:2:0.4:0.8:0.2.
[0039] Heat oxidized polyethylene wax to 75°C as a grinding and dispersing agent for nano-titanium dioxide in proportion to nano-titanium dioxide and grind nano-titanium dioxide on a constant temperature grinder for 1.5 hours to form a nano-material with an average particle size of 220nm; then add each raw material component Mixer, the mixing time is 7min; melt and blend the mixed materials with a twin-screw extruder, extrude and granulate, and the extrusion process parameters: the melt temperature is 190°C, the screw speed is 3...
Embodiment 3
[0042] Take the polyethylene 735RW (linear low density polyethylene, density 0.935g / cm 3 , melt flow rate 7g / 10min), nano-titanium dioxide, paraben ester, oxidized polyethylene wax, silane coupling agent, antioxidant, according to the total mass parts as 100 parts, the mass ratio of each raw material component is polyethylene : nanometer titanium dioxide: paraben ester: oxidized polyethylene wax: silane coupling agent: antioxidant=90.2:3:4:0.8:1.5:0.5.
[0043] Heat oxidized polyethylene wax to 75°C as a grinding and dispersing agent for nano-titanium dioxide in proportion to nano-titanium dioxide and grind nano-titanium dioxide on a constant temperature grinder for 2.5 hours to form a nano-material with an average particle size of 215nm; then add each raw material component Mixer, mixing time 14min; melt and blend the mixed materials with a twin-screw extruder, extrude and granulate, extrusion process parameters: melt temperature is 190°C, screw speed is 160rpm; finally use a...
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