Preparation method of thermoplastic konjac glucomannan/poly butylenes succinate blending material
A technology of polybutylene succinate and konjac glucomannan, which is applied in the field of preparation of thermoplastic konjac glucomannan/polybutylene succinate blend materials, can solve the problem of high price of PBS, melting High index, low intrinsic viscosity, etc., to achieve low cost, good processing performance, and improve processing performance
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[0024] Example 1:
[0025] A preparation method of a thermoplastic konjac glucomannan / polybutylene succinate blend material includes the following steps:
[0026] Take 80 parts of thermoplastic konjac glucomannan and 20 parts of polybutylene succinate according to the weight ratio, add them to the high-speed mixer and stir for 5 minutes, dry at 35°C for 12 hours, add the above blend to the twin screw In the extruder, melt blending for 8 min at 130°C and 0.5 MPa, extrusion molding, and pelletizing after cooling to obtain a cylindrical pellet blend material with a diameter of 2-3 mm and a length of 3-4 mm. The prepared blended material is processed into a thermoplastic konjac glucomannan / polybutylene succinate composite film (sheet) through a single screw extrusion device (screw diameter 20-50mm, length-to-diameter ratio 25-40:1) .
Example Embodiment
[0027] Example 2:
[0028] A preparation method of a thermoplastic konjac glucomannan / polybutylene succinate blend material includes the following steps:
[0029] Take 70 parts of thermoplastic konjac glucomannan, 30 parts of polybutylene succinate, 1 part of glycerol, and 6 parts of polycaprolactone according to the weight ratio. Add them to the high-speed mixer and stir for 8 minutes, and dry at 40℃ For 11 hours, add the above blend into a twin-screw extruder, melt and blend for 10 min at 140°C and 0.3MPa, extrude and cool, and then pelletize to obtain a 2-3mm diameter and 3-4mm length Cylindrical particle blending material. The prepared blended material is processed into a konjac glucomannan / polybutylene succinate composite film or sheet through a single screw extrusion device (screw diameter 20-50mm, length-diameter ratio 25-40:1).
Example Embodiment
[0030] Example 3:
[0031] A preparation method of a thermoplastic konjac glucomannan / polybutylene succinate blend material includes the following steps:
[0032] Take 60 parts of thermoplastic konjac glucomannan, 40 parts of polybutylene succinate, 2 parts of polyethylene glycol, and 10 parts of polycaprolactone according to the weight ratio. Add them to the high-speed mixer and stir for 10 minutes. Dry for 10 hours at 45°C, put the above blend into a twin-screw extruder, melt and blend for 12 min at 150°C and 0.6MPa, extrude and cool and then pelletize to obtain a diameter of 2-3mm and a length of 3 -4mm cylindrical granular blend material. The prepared blended material is processed into a konjac glucomannan / polybutylene succinate composite film or sheet through a single screw extrusion device (screw diameter 20-50mm, length-diameter ratio 25-40:1).
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