A kind of melt-blown grade polypropylene with ultra-long antibacterial effect and its preparation method and application
A technology of polypropylene and organic antibacterial agents, which is applied in the field of polymer materials, can solve the problems of poor thermal stability of organic antibacterial agents, and achieve the effects of prolonging antibacterial time, good inhibition effect, and improving aging resistance
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Embodiment 1
[0090] S1, modification of inorganic nano antibacterial agent:
[0091] 1) Put the silane coupling agent KH550 into a beaker filled with absolute ethanol, stir and dilute;
[0092] 2) Add nano-titanium dioxide and nano-alumina (1:1) into (1) diluent, and stir thoroughly;
[0093] 3) The liquid prepared in 2) was reacted at 80° C. for 30 minutes, and the precipitate was collected after centrifugation, dried and ground for later use.
[0094] Table 1: Raw material usage table in S1
[0095] raw material KH550 Nano titanium dioxide + nano alumina Absolute ethanol parts by mass phr 10 10 100
[0096] S2, preparation of organic antibacterial agent masterbatch
[0097] Mix 100 parts by weight of melt-blown grade polypropylene, 0.5% by weight of zinc pyrithione, 0.1% by weight of discoloration inhibitor basic zinc carbonate, and 0.1% by weight of antioxidant 1010 in a mixer, Adding into twin-screws for melt blending and extruding, cooling and pelletizin...
Embodiment 2
[0103] Repeat the process of embodiment 1, difference is: the parts by weight of zinc pyrithione is 1% in the organic antibacterial agent masterbatch.
Embodiment 3
[0105] Repeat the process of embodiment 1, difference is: the parts by weight of zinc pyrithione is 3% in the organic antibacterial agent masterbatch.
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