Injection molding preparation method for magnetic composite material in magnetostatic field
A magnetic composite material, injection molding technology, applied in the direction of magnetism of organic materials/organic magnetic materials, to achieve the effect of cost reduction and simplification of procedures
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Embodiment 1
[0029] Step 1) Raw material preparation
[0030] Add 5 parts of ferromagnetic Fe particles to 100 parts of polyethylene and mix evenly at 120°C;
[0031] Step 2) Injection molding in magnetic field
[0032] Inject the raw material into the mold under a certain pressure, the injection temperature is 140°C, apply a static magnetic field at the mold, and the magnetic field strength is 0.01T;
[0033] Step 3) Cooling and demoulding
[0034] After holding the pressure for a period of time, the plastic part is cooled to a certain temperature and the mold can be opened, and the plastic part is pushed out of the mold under the action of the ejection mechanism to obtain the product.
Embodiment 2
[0036] Step 1) Raw material preparation
[0037] Add 20 parts of ferromagnetic Co particles to 100 parts of polypropylene and mix evenly at 160°C;
[0038] Step 2) Injection molding in magnetic field
[0039] Inject the raw material into the mold under a certain pressure, the injection temperature is 180°C, apply a static magnetic field at the mold, and the magnetic field strength is 0.1T;
[0040] Step 3) Cooling and demoulding
[0041] After holding the pressure for a period of time, the plastic part is cooled to a certain temperature and the mold can be opened, and the plastic part is pushed out of the mold under the action of the ejection mechanism to obtain the product.
Embodiment 3
[0043] Step 1) Raw material preparation
[0044] Add 50 parts of ferromagnetic Ni particles to 100 parts of polystyrene and mix evenly at 180°C;
[0045] Step 2) Injection molding in magnetic field
[0046] Inject the raw material into the mold under a certain pressure, the injection temperature is 200°C, apply a static magnetic field at the mold, and the magnetic field strength is 0.5T;
[0047] Step 3) Cooling and demoulding
[0048] After holding the pressure for a period of time, the plastic part is cooled to a certain temperature and the mold can be opened, and the plastic part is pushed out of the mold under the action of the ejection mechanism to obtain the product.
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Abstract
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Application Information
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