Filled low-temperature modulation wax for precision casting and preparation method thereof
A technology of precision casting and filling type, which is used in casting molding equipment, casting molds, cores, etc., can solve the problems of inability to meet precision casting, unfixed demolding time, poor thermal stability of mold materials, etc., and shorten demolding time. , low grayscale, the effect of reducing shrinkage
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Embodiment 1
[0029] A filling-type precision casting low-temperature modulated wax, comprising the following components in parts by weight: 31-33 parts of microcrystalline wax, 1.5-2.5 parts of polyethylene wax, 27-29 parts of rosin resin, and ethylene-vinyl acetate copolymer 3-5 parts, 4-6 parts of α-olefin polymer, 0.8-1.2 parts of stearic acid, 25-30 parts of filler. The preparation method that above-mentioned modulation wax adopts comprises the following steps:
[0030] (1) Heat half of the rosin resin and stir continuously until it is completely melted, then add the other half of the rosin resin, stir until the rosin resin is completely melted, and the heating temperature is 120°C to obtain molten rosin resin, melt the rosin resin separately, and shorten the melting time , to reduce the difficulty of melting;
[0031] (2) After continuing to heat the molten rosin resin obtained in step (1) for 1-2 minutes, add ethylene-vinyl acetate copolymer, heat and stir until the ethylene-vinyl a...
Embodiment 2
[0040] A filling type precision casting low-temperature modulated wax, comprising the following components in parts by weight: 31 parts of microcrystalline wax, 1.5 parts of polyethylene wax, 27 parts of rosin resin, 3 parts of ethylene-vinyl acetate copolymer, α-olefin 4 parts of polymer, 0.8 part of stearic acid, 25 parts of filler. The preparation method that above-mentioned modulation wax adopts comprises the following steps:
[0041] (1) Heat half of the rosin resin and stir continuously until it is completely melted, then add the other half of the rosin resin, stir until the rosin resin is completely melted, and the heating temperature is 120°C to obtain molten rosin resin, melt the rosin resin separately, and shorten the melting time , to reduce the difficulty of melting;
[0042] (2) After continuing to heat the molten rosin resin obtained in step (1) for 1-2 minutes, add ethylene-vinyl acetate copolymer, heat and stir until the ethylene-vinyl acetate copolymer is com...
Embodiment 3
[0051] A filling-type precision casting low-temperature modulated wax, comprising the following components in parts by weight: 32 parts of microcrystalline wax, 2 parts of polyethylene wax, 28 parts of rosin resin, 4 parts of ethylene-vinyl acetate copolymer, α-olefin 5 parts of polymer, 1 part of stearic acid, 28 parts of filler. The preparation method that above-mentioned modulation wax adopts comprises the following steps:
[0052] (1) Heat half of the rosin resin and stir continuously until it is completely melted, then add the other half of the rosin resin, stir until the rosin resin is completely melted, and the heating temperature is 120°C to obtain molten rosin resin, melt the rosin resin separately, and shorten the melting time , to reduce the difficulty of melting;
[0053] (2) After continuing to heat the molten rosin resin obtained in step (1) for 1-2 minutes, add ethylene-vinyl acetate copolymer, heat and stir until the ethylene-vinyl acetate copolymer is complet...
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