All-biological-based resin composition
A technology of base resin and composition, applied in the field of full bio-based resin composition, can solve the problems that are not involved in hydrolysis resistance, destructive biodegradability, overall performance defects, etc., and achieve superior biodegradation performance, high toughness and Effects of hydrolysis resistance and high hydrolysis resistance
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[0025] A preparation method of bio-based carbodiimide (biopolyols ratio is 54%), the specific steps are as follows:
[0026] Add 200 grams of Stabaxol P220 polycarbodiimide (a tetramethylxylylene diisocyanate produced by Rhein Chemie, with an NCN content of about 14%) in a nitrogen atmosphere, and add 238 grams of Agrol2 when heated to 140°C .0 Bio-based polyol (a kind of bio-based polyol with an OH number of 74.5 produced by Cargrill Company), start to stir the mixture, monitor the NCO content in the mixture, until the NCO content drops to zero, the reaction ends to obtain bio-polyols The ratio is 54% bio-based carbodiimide.
Example Embodiment
[0027] Example 1
[0028] A fully bio-based resin composition, proportioned by weight of the following components: 100 parts of polylactic acid (Hisun Biomaterials REVODE190), 2 parts of bio-based carbodiimide (54% of biopolyols) , Talcum powder (3000 mesh) 5 parts, polycaprolactone 2 parts; put the mixture in a twin-screw extruder for blending and granulation. The temperature of each section of the screw is set to 190℃, 200℃, 210℃, 220℃, 205℃, rotation speed: 50rpm, after granulation, put into injection molding machine for injection molding, injection temperature is 205℃, injection pressure is 100mpa, cooling time of melt in the mold is 38 seconds, mold temperature Set to 100°C to obtain a fully bio-based resin composition. The mechanical properties and hydrolysis resistance of the composition were tested, and the results are shown in Table 1 and Table 2.
Example Embodiment
[0029] Example 2
[0030] The total bio-based resin composition is proportioned according to the following components by weight: 100 parts of polylactic acid (Hisun Biomaterials REVODE190), 2 parts of bio-based carbodiimide (the proportion of biopolyols is 54%), and talc (3000 mesh) 5 parts, 10 parts polybutylene succinate; put the well-proportioned mixture in a twin-screw extruder for blending and granulation. The temperature of each section of the screw is set to: 190℃, 200℃ , 210℃, 220℃, 205℃, rotation speed: 50rpm, after granulation, put into injection molding machine for injection molding, injection temperature is 205℃, injection pressure is 100mpa, cooling time of melt in mold is 38 seconds, mold The temperature was set to 100°C to obtain a fully bio-based resin composition. The mechanical properties and hydrolysis resistance of the composition were tested, and the results are shown in Table 1 and Table 2.
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