Lignin-modified whole bio-based PBSA biodegradable plastic and preparation method thereof
A technology of biodegradable plastics and biodegradable resins, applied in flat products, other household appliances, household appliances, etc., can solve the problems of high carbon dioxide, consumption of petroleum resources, etc., and achieve the effects of low production cost, cost reduction and convenient operation.
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[0036] Example 1 Preparation of lignin-modified PBSA biodegradable plastic
[0037] (1) In terms of parts by weight, the proportions of the raw materials used are as follows:
[0038]
[0039]
[0040] (2) The specific preparation method includes the following steps:
[0041] (1) Synthesize all bio-based PBSA biodegradable resin raw materials according to the above method;
[0042] (2) Dry a certain amount of bio-based PBSA and lignin powder (150 mesh) at 25°C and 0~5000Pa for 2.0h;
[0043] (3) Add dried bio-based PBSA, lignin powder, bisphenol A, dibutyl hydroxytoluene, triethyl citrate, epoxy soybean oil, zinc stearate in the high-speed mixer, and control the material temperature to 100-105℃, mixing for 15 minutes, rotating speed 900r / min;
[0044] (4) Extruding and granulating the obtained mixture through a twin-screw extruder, and controlling the extrusion temperature at 120-130°C to obtain lignin-bio-based PBSA composite plastic particles;
[0045] (5) The compound lignin-bio-based...
Example Embodiment
[0046] Example 2 Preparation of lignin-modified bio-based PBSA biodegradable plastic
[0047] (1) In terms of parts by weight, the proportions of the raw materials used are as follows:
[0048]
[0049] (2) The specific preparation method includes the following steps:
[0050] (1) Synthesize all bio-based PBSA biodegradable resin raw materials according to the above method;
[0051] (2) Dry a certain amount of bio-based PBSA and lignin (200 mesh) at 25°C and 0-5000 Pa for 3 hours;
[0052] (3) Add dried bio-based PBSA, lignin and acetyl tri-n-butyl citrate, resorcinol dihydroxyethyl ether, butyl hydroquinone, epoxy soybean oil, and stearin into the high mixer Calcium acid, control the material temperature at 110℃, mix for 20 minutes, and rotate speed at 1000r / min;
[0053] (4) Extruding and granulating the obtained mixture through a twin-screw extruder, and controlling the extrusion temperature to be 130-140°C to obtain lignin-PBSA composite plastic particles;
[0054] (5) After the comp...
Example Embodiment
[0055] Example 3 Preparation of lignin-modified bio-based PBSA biodegradable plastic
[0056] (1) In terms of parts by weight, the proportions of the raw materials used are as follows:
[0057]
[0058] (2) The specific preparation method includes the following steps:
[0059] (1) Synthesize all bio-based PBSA biodegradable resin raw materials according to the above method;
[0060] (2) Dry a certain amount of bio-based PBSA and lignin (250 mesh) at 25°C and 0~5000Pa for 3h;
[0061] (3) Add dried bio-based PBSA, lignin, and maleic anhydride, triacetin, butyl hydrophenol, 1,4-butanediol, zinc stearate into the high-speed mixer to control The material temperature is 105°C, mixed for 25 minutes, and the speed is 1000r / min;
[0062] (4) Extruding and granulating the obtained mixture through a twin-screw extruder, and controlling the extrusion temperature to be 155-160°C to obtain lignin-PBSA composite plastic pellets;
[0063] (5) The lignin-PBSA composite plastic is blown film, and the blo...
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