Preparation method of polyethersulfone powder consumables for laser sintering forming 3D printing
A 3D printing and laser sintering technology, applied in additive processing and other directions, can solve problems such as increasing costs, and achieve the effects of saving production costs, shortening drying cycles, and uniform particle size
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[0025] The invention provides a preparation method of laser sintering forming 3D printing polyethersulfone powder consumables, comprising the following steps:
[0026] (1) Put the polyethersulfone into the silo of the low-temperature pulverizer, and use the liquid nitrogen built in the silo to cool the polyethersulfone to -130°C~-196°C";
[0027] (2) Pulverizing the cooled polyethersulfone in step (1), the pulverization temperature is -110°C to -196°C to obtain primary polyethersulfone powder;
[0028] (3) After sieving the primary polyethersulfone powder in step (2), place it in an adjustable heating device, and start drying at 100°C with a gradient temperature rise. After ℃, dry at constant temperature for 0.5h~2h;
[0029] (4) Add the pulverized powder in the step (3) into a grinder, and fully grind to obtain a crude polyethersulfone product;
[0030] (5) Dry the crude polyethersulfone product in step (4) at 100°C with a gradient temperature rise and a temperature rise fr...
Embodiment 1
[0045] A preparation method for polyethersulfone powder consumables for laser sintering forming 3D printing, comprising the following steps:
[0046] (1) Put 10g of polyethersulfone into the cooling chamber from the upper part and move it downward; add liquid nitrogen from the bottom and move it up, reverse the immersion cooling, and cool the material to -196°C for 3 hours;
[0047] (2) The polyethersulfone cooled in step (1) is pulverized by a vibrating ball mill at a pulverization temperature of -196°C for 1.5 hours to obtain primary polyethersulfone powder;
[0048] (3) After sieving the primary polyethersulfone powder in step (2), place it in an adjustable heating device, and dry it with a gradient temperature rise at 100°C. The heating frequency is 5°C / min. After heating up to 130°C, it is dried at a constant temperature for 2 hours. ;
[0049] (4) Add the pulverized powder in step (3) into a grinder, and grind for 2 hours under the condition of sufficient grinding at 14...
Embodiment 2
[0052] A preparation method for polyethersulfone powder consumables for laser sintering forming 3D printing, comprising the following steps:
[0053] (1) Put 10g of polyethersulfone into the cooling bin from the upper part and move it downward; add liquid nitrogen from the bottom and move it up, and reverse the immersion cooling, and cool the material to -180°C for 3.5 hours;
[0054] (2) The cooled polyethersulfone in step (1) is pulverized by a vibrating ball mill at a pulverization temperature of -180°C for 1.5 hours to obtain primary polyethersulfone powder;
[0055] (3) After sieving the primary polyethersulfone powder in step (2), place it in an adjustable heating device, and dry it with a gradient temperature rise at 100°C. The heating frequency is 5°C / min. After heating up to 130°C, it is dried at a constant temperature for 2 hours. ;
[0056] (4) Add the pulverized powder in step (3) into a grinder, and grind for 1.8 hours under the condition of sufficient grinding a...
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