Environment-friendly nano antibacterial wood plastic composite and preparation method thereof
An antibacterial wood and nano technology, applied in the field of wood-plastic materials, can solve the problems of decreased mechanical properties, poor compatibility, easy breeding of bacteria, etc., and achieve the effect of improving antibacterial and antifungal properties.
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[0043] A preparation method of an environment-friendly nano antibacterial wood-plastic material, comprising the following steps:
[0044] (1), putting the nano-silver-zinc composite material, surfactant and water weighed according to the above-mentioned formula ratio into a grinder, and grinding for 8 hours to obtain a uniformly dispersed nano-silver-zinc composite aqueous solution;
[0045] (2) Pretreatment: Pour the above-mentioned nano-silver-zinc composite aqueous solution and coupling agent into wood chips, stir evenly, and dry at a constant temperature of 60°C to obtain modified wood chips;
[0046] (3), compatibilization treatment: pour the above-mentioned modified sawdust and the toughening agent into the internal mixer together to granulate, and obtain the toughened modified material of sawdust;
[0047] (4) Extrusion: After mixing the above-mentioned wood chip toughening modified material and polypropylene (PP) evenly, extrude with twin-screws, and the extrusion temp...
Embodiment 1
[0058](1) Components and dosage of nano-silver-zinc composite materials
[0059]
[0060] (2) Components and dosage of environmentally friendly nano-antibacterial wood-plastic materials
[0061]
[0062]
[0063] The prepared environment-friendly nano antibacterial wood-plastic material has undergone relevant tests on mechanical properties and antibacterial and antifungal properties, and the test results of various indicators are shown in Table 1.
[0064] Table 1 Test results of environmentally friendly nano-antibacterial wood-plastic materials
[0065]
[0066] The test results show that the prepared environmentally friendly nano-antibacterial wood-plastic material has good mechanical properties, antibacterial and anti-mildew properties, is not easy to be eaten by insects, and has a long service life.
Embodiment 2
[0068] (1) Components and dosage of nano-silver-zinc composite materials
[0069]
[0070] (2) Components and dosage of environmentally friendly nano-antibacterial wood-plastic materials
[0071]
[0072] The prepared environment-friendly nano antibacterial wood-plastic material has undergone related tests on mechanical properties and antibacterial and antifungal properties, and the test results of various indicators are shown in Table 2.
[0073] Table 2 Test results of environmentally friendly nano-antibacterial wood-plastic materials
[0074]
[0075] The test results show that the prepared environmentally friendly nano-antibacterial wood-plastic material has good mechanical properties, antibacterial and anti-mildew properties, is not easy to be eaten by insects, and has a long service life.
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