Preparation method of high-temperature injection-molding binding-resistant magnetic material with wide magnetic application range
A technology of application range and magnetic material, applied in the field of preparation of multifunctional composite materials, can solve the problems of reducing the performance of injection molding materials, small magnetic application range, poor high temperature resistance, etc., to achieve improved magnetic effect, good magnetic ability, and improved The effect of high temperature resistance
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Embodiment 1
[0027] Embodiment 1 provides a method for preparing a high-temperature-resistant injection-molded bonded magnetic material with a high magnetic application range. The following steps are used for each component in parts by weight:
[0028] S1: After mixing ferric chloride and ferrous chloride solution at a molar ratio of 2:3, use excess ammonia solution at 55°C, pH=9, high-speed stirring for precipitation reaction, filter and dry to obtain tetraoxide three iron;
[0029] S2: Add 30 parts by weight of anisotropic strontium iron magnetic powder, 20 parts of isotropic NdFeB magnetic powder, 30 parts of anisotropic NdFeB magnetic powder and the above 35 parts of ferroferric oxide into a high-speed mixer for high-speed Stir and mix for 20 minutes, mix well and put it in an oven to dry for 2 hours for later use;
[0030] S3: Add 8 parts of tungsten powder, 4 parts of nano-calcium carbonate and binder to the above dry materials in parts by weight, then put them into a high-speed mix...
Embodiment 2
[0035] Embodiment 2 provides a method for preparing a high-temperature-resistant injection-molded bonded magnetic material with a high magnetic application range. The following steps are used for each component in parts by weight:
[0036] S1: After mixing ferric chloride and ferrous chloride solution at a molar ratio of 2:3, use excess ammonia solution at 58°C, pH=9, high-speed stirring for precipitation reaction, filter and dry to obtain tetraoxide three iron;
[0037] S2: Add 40 parts by weight of anisotropic strontium iron magnetic powder, 30 parts of isotropic NdFeB magnetic powder, 40 parts of anisotropic NdFeB magnetic powder and the above 45 parts of ferroferric oxide into a high-speed mixer for high-speed Stir and mix for 25 minutes, mix well and put it in an oven to dry for 2.5 hours for later use;
[0038] S3: Add 9 parts of tungsten powder, 6 parts of nano-calcium carbonate and binder to the above dry materials in parts by weight, then put them into a high-speed m...
Embodiment 3
[0043] Example 3 provides a method for preparing a high-temperature-resistant injection-molded bonded magnetic material with a high magnetic application range. The following steps are used for each component in parts by weight:
[0044] S1: After mixing ferric chloride and ferrous chloride solution at a molar ratio of 2:4, use excess ammonia solution at 60°C, pH=8, high-speed stirring for precipitation reaction, filter and dry to obtain tetraoxide three iron;
[0045] S2: Add 35 parts by weight of anisotropic strontium iron magnetic powder, 25 parts of isotropic NdFeB magnetic powder, 35 parts of anisotropic NdFeB magnetic powder and the above 40 parts of ferroferric oxide into a high-speed mixer for high-speed Stir and mix for 30 minutes, mix well and put it in an oven to dry for 3 hours for later use;
[0046] S3: Add 10 parts of tungsten powder, 5 parts of nano-calcium carbonate and binder to the above dry materials in parts by weight, then put them into a high-speed mixer...
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