A kind of antibacterial cellulose/polypropylene composite material and its preparation method
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A composite material and cellulose technology, applied in the field of cellulose/polypropylene composite material and preparation, can solve the problem of unsatisfactory antibacterial effect, and achieve the effects of inhibiting breeding, improving mechanical properties and improving antibacterial performance.
Active Publication Date: 2020-06-05
NORTHEAST FORESTRY UNIVERSITY
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Problems solved by technology
[0004] The present invention aims to solve the problem that the existing bacteriostatic agent added to the wood-plastic composite material has an unsatisfactory antibacterial effect, and provides a bacteriostatic cellulose / polypropylene composite material and its preparation method
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specific Embodiment approach 1
[0039]Specific Embodiment 1: The bacteriostatic cellulose / polypropylene composite material in this embodiment includes 10.00 to 74.00 parts by weight of cellulose, 11.00 to 87.00 parts of polypropylene resin, 0.50 to 5.00 parts of bacteriostatic agent, 2.00 parts by weight ~7.00 parts of compatibilizer, 0.10~2.00 parts of coupling agent, 0.10~2.00 parts of antioxidant, 0.10~2.00 parts of dispersant and 0.50~3.00 parts of porous media material; the antibacterial agent includes inorganic Bacteriostatic agent and organic bacteriostatic agent; Wherein the inorganic bacteriostatic agent is zinc oxide, nano-silver, nano-copper salt, silicon dioxide, anatase titanium dioxide or a mixture of several, the organic bacteriostatic The agent is one of 3-amino-1,2,4-triazole, 4-amino-1,2,4-triazole, 3,5-diamino-1,2,4-triazole or a mixture of several.
specific Embodiment approach 2
[0040] Embodiment 2: This embodiment is different from Embodiment 1 in that: the cellulose is one or a mixture of microcrystalline cellulose, cellulose whiskers, and nanocellulose. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0041] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that: the polypropylene resin is random copolymerized polypropylene resin. Others are the same as in the first or second embodiment.
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Abstract
The invention discloses a bacteriostatic type cellulose / polypropylene composite material and a preparation method, relates to a cellulose / polypropylene composite material and a preparation method, andaims to solve the problem that the bacteriostatic effect is not ideal as an existing bacteriostatic agent is added into a wood-plastic composite material. The composite material is prepared from cellulose, polypropylene resin, a bacteriostatic agent, a compatilizer, a coupling agent, an antioxidant, a dispersant and a multihole dielectric material. The method comprises the following steps: I, weighing the materials; II, adding the coupling agent into an ethanol solution to obtain a hydrolyzed coupling agent, adding the bacteriostatic agent into the hydrolyzed coupling agent for stirring and drying, so as to obtain a bacteriostatic agent compound, adding the bacteriostatic agent compound, polypropylene resin A, the antioxidant and the dispersant into a double-screw extruder, and performinggranulation and drying, so as to obtain bacteriostatic master batch; III, adding the bacteriostatic master batch, the cellulose, the polypropylene resin B, the compatilizer and the multihole dielectric material into the double-screw extruder, performing granulation and drying to obtain composite granules, and performing injection molding to obtain the bacteriostatic type cellulose / polypropylene composite material. The bacteriostatic type cellulose / polypropylene composite material is applied to the field of wood-plastic composite materials.
Description
technical field [0001] The invention relates to a cellulose / polypropylene composite material and a preparation method. Background technique [0002] With the improvement of people's safety awareness, there is a high demand for antibacterial in the use of furniture, food packaging, daily necessities, etc. Therefore, the design, production and application of antibacterial materials have attracted much attention. Composite materials based on commonly used resins such as thermosetting resins (unsaturated polyester, epoxy resin, aminoplast, etc.), thermoplastic resins (polyethylene, polypropylene, polyvinyl chloride, etc.) are the most widely used. Among them, polypropylene (Poyropylene, PP) is cheap, excellent in performance, good in stability and easy to process and shape. However, PP itself does not have antibacterial properties. The composite material based on polypropylene is affected by the environment and easily corroded by microorganisms after long-term use. This not onl...
Claims
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