Preparation method of high-specific-gravity corrosion-resistant environment-friendly injection-molding plastic magnetic material

Abstract

The invention discloses a preparation method of a high-specific-gravity corrosion-resistant environment-friendly injection-molding plastic magnetic material and belongs to the field of the preparationmethod of the high-specific-gravity corrosion-resistant environment-friendly injection-molding plastic magnetic material. The preparation method of the high-specific-gravity corrosion-resistant environment-friendly injection-molding plastic magnetic material is characterized in that tetradecyl dimethylamine ethyl ester, a silane coupling agent, nanomaterials, polytetrafluoroethylene and other ingredients are added in a formula. According to the preparation method of the high-specific-gravity corrosion-resistant environment-friendly injection-molding plastic magnetic material, the tensile strength of a product can be improved, the corrosion resistance of the product is improved, and the performance of injection molding materials is improved.

Description

technical field

[0001] The invention relates to the field of preparation methods of injection molding bonded magnetic materials, and more specifically, relates to a preparation method of high specific gravity and corrosion-resistant environment-friendly injection molding bonded magnetic materials. Background technique

[0002] Injection-bonded magnetic materials are functional materials that generate magnetic fields. In today's electronic age, permanent magnet materials are widely used, such as: electric toys, electric speakers, stereo headphones, computer drivers, and magnets required in the motorcycle and automobile industries. Motors, etc. Although the research and application of permanent magnet ferrite materials has only been completed for more than 50 years, its application will be fully developed due to energy saving and environmental protection. In particular, injection bonded magnetic materials, compared with traditional sintered magnetic materials, do not need repe...

Examples

Embodiment 1

[0035] Embodiment 1 provides a method for preparing a high specific gravity and corrosion-resistant environment-friendly injection-molded bonded magnetic material. The components by weight and the preparation steps are as follows:

[0036] S1: Put 65.0 parts of anisotropic strontium ferromagnetic powder in a counter-jet jet mill, and grind to 1 μm-5 μm;

[0037] S2: Add the ground anisotropic strontium ferromagnetic powder, 2.0 parts of silane coupling agent and 0.5 part of tetradecyl dimethyl betaine into the high-speed mixer for high-speed stirring, mix for 10 minutes, mix well and put Dry in an oven for 5 hours for later use;

[0038] S3: Add the dried mixture with 5.0 parts of polyamide-6, 5.0 parts of polyamide-610, 0.6 parts of polytetrafluoroethylene and nanomaterials into a high-speed mixer and mix for 15 minutes. After mixing evenly, put it in an oven to dry 3 hours standby;

[0039] The nanomaterials include: 3.0 parts of tungsten powder, 0.2 parts of nano-calcium ...

Embodiment 2

[0044] Embodiment 2 provides a method for preparing a high specific gravity, corrosion-resistant, environment-friendly injection-molded bonded magnetic material. The components by weight and the preparation steps are as follows:

[0045] S1: Put 81.0 parts of anisotropic strontium ferromagnetic powder in a counter-jet jet mill, and grind to 1 μm-4 μm;

[0046] S2: Add the ground anisotropic strontium ferromagnetic powder, 2.8 parts of silane coupling agent and 0.8 part of myristyl dimethyl betaine into a high-speed mixer for high-speed stirring, mix for 18 minutes, mix well and put Dry in an oven for 9 hours for later use;

[0047] S3: Add the dried mixture with 9.0 parts of polyamide-6, 9.0 parts of polyamide-610, 0.8 parts of polytetrafluoroethylene and nanomaterials into a high-speed mixer and mix for 23 minutes. After mixing evenly, put it in an oven for drying 6 hours standby;

[0048]The nanomaterials include: 6.0 parts of tungsten powder, 0.6 parts of nano-calcium car...

Embodiment 3

[0053] Example 3 provides a method for preparing a high specific gravity and corrosion-resistant environment-friendly injection-molded bonded magnetic material. The components by weight and the preparation steps are as follows:

[0054] S1: Put 80.0 parts of anisotropic strontium ferromagnetic powder in a counter-jet jet mill, and grind to 1 μm-4 μm;

[0055] S2: Add the ground anisotropic strontium ferromagnetic powder, 2.5 parts of silane coupling agent and 0.7 part of tetradecyl dimethyl betaine into a high-speed mixer for high-speed stirring, mix for 15 minutes, mix well and put Dry in an oven for 8 hours for later use;

[0056] S3: Add the dried mixture with 8.0 parts of polyamide-6, 8.0 parts of polyamide-610, 0.7 parts of polytetrafluoroethylene and nanomaterials into a high-speed mixer and mix for 20 minutes. After mixing evenly, put it in an oven to dry 5 hours standby;

[0057] The nanomaterials include: 5.0 parts of tungsten powder, 0.5 parts of nano calcium carbo...

technical field

[0001] The invention relates to the field of preparation methods of injection molding bonded magnetic materials, and more specifically, relates to a preparation method of high specific gravity and corrosion-resistant environment-friendly injection molding bonded magnetic materials. Background technique

[0002] Injection-bonded magnetic materials are functional materials that generate magnetic fields. In today's electronic age, permanent magnet materials are widely used, such as: electric toys, electric speakers, stereo headphones, computer drivers, and magnets required in the motorcycle and automobile industries. Motors, etc. Although the research and application of permanent magnet ferrite materials has only been completed for more than 50 years, its application will be fully developed due to energy saving and environmental protection. In particular, injection bonded magnetic materials, compared with traditional sintered magnetic materials, do not need repe...

Examples

Embodiment 1

[0035] Embodiment 1 provides a method for preparing a high specific gravity and corrosion-resistant environment-friendly injection-molded bonded magnetic material. The components by weight and the preparation steps are as follows:

[0036] S1: Put 65.0 parts of anisotropic strontium ferromagnetic powder in a counter-jet jet mill, and grind to 1 μm-5 μm;

[0037] S2: Add the ground anisotropic strontium ferromagnetic powder, 2.0 parts of silane coupling agent and 0.5 part of tetradecyl dimethyl betaine into the high-speed mixer for high-speed stirring, mix for 10 minutes, mix well and put Dry in an oven for 5 hours for later use;

[0038] S3: Add the dried mixture with 5.0 parts of polyamide-6, 5.0 parts of polyamide-610, 0.6 parts of polytetrafluoroethylene and nanomaterials into a high-speed mixer and mix for 15 minutes. After mixing evenly, put it in an oven to dry 3 hours standby;

[0039] The nanomaterials include: 3.0 parts of tungsten powder, 0.2 parts of nano-calcium ...

Embodiment 2

[0044] Embodiment 2 provides a method for preparing a high specific gravity, corrosion-resistant, environment-friendly injection-molded bonded magnetic material. The components by weight and the preparation steps are as follows:

[0045] S1: Put 81.0 parts of anisotropic strontium ferromagnetic powder in a counter-jet jet mill, and grind to 1 μm-4 μm;

[0046] S2: Add the ground anisotropic strontium ferromagnetic powder, 2.8 parts of silane coupling agent and 0.8 part of myristyl dimethyl betaine into a high-speed mixer for high-speed stirring, mix for 18 minutes, mix well and put Dry in an oven for 9 hours for later use;

[0047] S3: Add the dried mixture with 9.0 parts of polyamide-6, 9.0 parts of polyamide-610, 0.8 parts of polytetrafluoroethylene and nanomaterials into a high-speed mixer and mix for 23 minutes. After mixing evenly, put it in an oven for drying 6 hours standby;

[0048]The nanomaterials include: 6.0 parts of tungsten powder, 0.6 parts of nano-calcium car...

Embodiment 3

[0053] Example 3 provides a method for preparing a high specific gravity and corrosion-resistant environment-friendly injection-molded bonded magnetic material. The components by weight and the preparation steps are as follows:

[0054] S1: Put 80.0 parts of anisotropic strontium ferromagnetic powder in a counter-jet jet mill, and grind to 1 μm-4 μm;

[0055] S2: Add the ground anisotropic strontium ferromagnetic powder, 2.5 parts of silane coupling agent and 0.7 part of tetradecyl dimethyl betaine into a high-speed mixer for high-speed stirring, mix for 15 minutes, mix well and put Dry in an oven for 8 hours for later use;

[0056] S3: Add the dried mixture with 8.0 parts of polyamide-6, 8.0 parts of polyamide-610, 0.7 parts of polytetrafluoroethylene and nanomaterials into a high-speed mixer and mix for 20 minutes. After mixing evenly, put it in an oven to dry 5 hours standby;

[0057] The nanomaterials include: 5.0 parts of tungsten powder, 0.5 parts of nano calcium carbo...

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