Powder material for selective laser sintering 3D printing precision casting of wax mold, and preparation method and application thereof
A 3D printing and laser sintering technology, applied in the field of 3D printing materials, can solve the problems of low-molecular polymer kinematic viscosity, high melting point, wax powder into powder and single nature, limitations and large raw material problems, and achieve broad market competition Less force, agglomeration and electrostatic adsorption, good dimensional stability
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Embodiment 1
[0036] In terms of mass parts, put 70# microcrystalline wax, beeswax, and montan wax into the reaction kettle according to the amount of 55 parts, 5 parts, and 9 parts, heat and stir at 90°C until the wax is completely melted, and then heat and stir in batches for 3 times Add 4.5 parts of PE wax, 17 parts of C5 hydrogenated petroleum resin, 3 parts of APAO, 5 parts of EVA resin, 1 part of stearic acid, and 0.5 part of acrylate copolymer, stir and heat until all organic matter melts, and continue heating and stirring for 1 hour. Then transport the wax liquid to the granulation distributor, the temperature of the distributor is 100°C, the speed of the conveying cooling steel belt is 4.5m / min, the temperature of the cooling air is 15°C, the cooling water in the front section is room temperature, and the cooling water in the rear end is 8°C. The wax powder base material is obtained in the receiver. The above wax material is cooled to -80°C, then mechanically crushed, processed and...
Embodiment 2
[0040] In terms of mass parts, put 58# paraffin wax, beeswax, and montan wax into the reaction kettle according to the amount of 54 parts, 12 parts, and 11 parts, heat and stir at 100°C until the wax is completely melted, and then add it in batches 3 times while heating and stirring 5 parts of PE wax, 25 parts of C5 hydrogenated petroleum resin, 3.5 parts of APAO, 5.5 parts of EVA resin, 1 part of low molecular weight polypropylene, 5.5 parts of stearic acid, 0.5 part of acrylate copolymer, stir and heat until all organic matter melts, continue Heat and stir for 1h. Then transport the wax liquid to the granulation distributor, the temperature of the distributor is 100°C, the speed of the conveying cooling steel belt is 4.5m / min, the temperature of the cooling air is 15°C, the cooling water in the front section is room temperature, and the cooling water in the rear end is 8°C. The wax powder base material in the receiver.
[0041] The above wax material is cooled to -110°C, th...
Embodiment 3
[0045] In terms of mass parts, put 70# microcrystalline wax, 58# paraffin wax, and montan wax into the reaction kettle according to the amount of 30 parts, 30 parts, and 8.5 parts, heat and stir until the wax is completely melted, and then heat and stir in batches 3 times Add 4 parts of PE wax, 17 parts of C5 hydrogenated petroleum resin, 3.5 parts of APAO, 5.5 parts of EVA resin, 1 part of stearic acid, and 0.5 part of acrylate copolymer, stir and heat until all organic matter melts, and continue heating and stirring for 1 hour. Then transport the wax liquid to the granulation distributor, the temperature of the distributor is 100°C, the speed of the conveying cooling steel belt is 4.5m / min, the temperature of the cooling air is 15°C, the cooling water in the front section is room temperature, and the cooling water in the rear end is 8°C. The wax powder base material in the receiver. The above wax material is cooled to -110°C, then mechanically pulverized, processed and sieve...
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