CN105023683A - High-tenacity samarium cobalt permanent magnet - Google Patents

Abstract

The invention discloses a high-tenacity samarium cobalt permanent magnet which is prepared from the following raw materials based on parts by weight: 80-90 parts of samarium cobalt permanent magnetic powder, 3-5 parts of graphene, 1.2-2.5 parts of sodium corrosive acid, 0.3-0.5 part of sodium dodecyl benzene sulfonate, 2-4 parts of styrene, 1-3 parts of hydroxyethyl methylacrylate, 2-5 parts of urea, 1.5-4 parts of polysaccharide, 3-4 parts of methyl acrylate, 1-2 parts of polyethylene glycol adipate, 1-2 parts of tripolyglycerol monostearate, 1-2 parts of polyglyceryl-3-diisostearate, 4-7 parts of deionized water, 1-2 parts of barium stearate, 0.1-0.2 part of magnesium stearate, 0.3-0.5 part of calcium oxide, and 1-2 part of gum acacia powder.

Description

A kind of samarium cobalt permanent magnet body with high tenacity

Technical field

The present invention relates to field of rare-earth permanent magnetic, is exactly a kind of samarium cobalt permanent magnet body with high tenacity.

Background technology

At present, the high performance permanent magnetic materials on market is rare-earth bond magnet mostly; So-called rare-earth bond magnet refers to and rare earth permanent-magnet powder is mixed into a certain proportion of binding agent and a kind of magnet made by certain processing technology, and its final form can be divided into rigidity rare-earth bond magnet and flexible rare-earth cementing magnet.

Summary of the invention

The object of the present invention is to provide a kind of samarium cobalt permanent magnet body with high tenacity.

Above-mentioned purpose is realized by following scheme:

There is a samarium cobalt permanent magnet body for high tenacity, it is characterized in that: it is obtained by the raw material of following weight parts:

SmCo permanet magnetic powder 80-90, Graphene 3-5, corrosive acid sodium 1.2-2.5, neopelex 0.3-0.5, styrene 2-4, hydroxyethyl methacrylate 1-3, urea 2-5, polysaccharide 1.5-4, methyl acrylate 3-4, polyethylene glycol adipate 1-2, Tripolyglycerol monostearates 1-2, three Risorex PGIS 22 1-2, deionized water 4-7, barium stearate 1-2, dolomol 0.1-0.2, calcium oxide 0.3-0.5, gummy powder 1-2.

Described a kind of samarium cobalt permanent magnet body with high tenacity, is characterized in that: preparation method comprises the following steps:

(1) urea, polysaccharide, methyl acrylate, polyethylene glycol adipate, Tripolyglycerol monostearates, three Risorex PGIS 22s, deionized water mixing, stir 10-20min at 40-45 DEG C, dry, obtains composite binding agent for subsequent use;

(2) Graphene, aluminium powder are placed in absolute ethyl alcohol and stir 10-20min, dry 4-5h at 50-60 DEG C, then 1-2h in the concentration 4-6% hydrochloric acid solution being soaked in 40-45 DEG C, after filtration, dry at 70-80 DEG C, obtain composite powder for subsequent use;

(3) by composite binding agent and the mixing of composite powder, add barium stearate, calcium chloride, ball milling 1-3 hour, obtains nonmagnetic powder for subsequent use;

(4) SmCo permanet magnetic powder, nonmagnetic powder, gummy powder are uniformly mixed in helium, obtain mixture;

(5) in the mixture of step (1), add all the other raw materials except dolomol again, in muller, 140-180 DEG C mixes;

(6) the unity powder after mixing is carried out mechanical crushing;

(7) dolomol is added in the powder that step (6) obtains, is pressed into High-density magnet, then solidify 40-80 minute at 120-160 DEG C after, cooling, after and get final product.

Beneficial effect of the present invention is: the present invention adds the natural material such as Graphene, gummy powder, while environment friendly and pollution-free, can obtain and have the more flexibility of high-orientation, the permanent magnet of toughness.Graphene by after composite with all the other raw materials through a series of process, the magnet finally suppressed enough reaches good magnetic energy through adding magnetic energy, saves the consumption of rare earth.

Embodiment

Have a samarium cobalt permanent magnet body for high tenacity, it is obtained by the raw material of following weight (kg):

SmCo permanet magnetic powder 90, Graphene 3, corrosive acid sodium 1.5, neopelex 0.5, styrene 2, hydroxyethyl methacrylate 1, urea 2, polysaccharide 1.5, methyl acrylate 3, polyethylene glycol adipate 1, Tripolyglycerol monostearates 2, three Risorex PGIS 22 2, deionized water 7, barium stearate 2, dolomol 0.2, calcium oxide 0.5, gummy powder 2.

Described a kind of samarium cobalt permanent magnet body with high tenacity, preparation method comprises the following steps:

(1) urea, polysaccharide, methyl acrylate, polyethylene glycol adipate, Tripolyglycerol monostearates, three Risorex PGIS 22s, deionized water mixing, stir 20min at 45 DEG C, dry, obtains composite binding agent for subsequent use;

(2) Graphene, aluminium powder are placed in absolute ethyl alcohol and stir 10min, dry 4h at 60 DEG C, then 2h in concentration 5% hydrochloric acid solution being soaked in 40 DEG C, after filtration, dry at 80 DEG C, obtain composite powder for subsequent use;

(3) by composite binding agent and the mixing of composite powder, add barium stearate, calcium chloride, ball milling 1 hour, obtains nonmagnetic powder for subsequent use;

(4) SmCo permanet magnetic powder, nonmagnetic powder, gummy powder are uniformly mixed in helium, obtain mixture;

(5) in the mixture of step (1), add all the other raw materials except dolomol again, in muller, 140 DEG C mix;

(6) the unity powder after mixing is carried out mechanical crushing;

(7) dolomol is added in the powder that step (6) obtains, is pressed into High-density magnet, then solidify at 135 DEG C after 50 minutes, cooling, after and get final product.

The hot strength 7.7MPa of gained magnet, and wet-hot aging performance is all good thus overcome the oxidizable problem of magnet, through the experiment of high temperature demagnetize, after 120 DEG C of insulation 1H, flux loss < 5%; Maximum magnetic energy product 8.9(MGOe).

Claims (2)

1. there is a samarium cobalt permanent magnet body for high tenacity, it is characterized in that: it is obtained by the raw material of following weight parts:

SmCo permanet magnetic powder 80-90, Graphene 3-5, aluminium powder 1.2-2.5, neopelex 0.3-0.5, styrene 2-4, hydroxyethyl methacrylate 1-3, urea 2-5, polysaccharide 1.5-4, methyl acrylate 3-4, polyethylene glycol adipate 1-2, Tripolyglycerol monostearates 1-2, three Risorex PGIS 22 1-2, deionized water 4-7, barium stearate 1-2, dolomol 0.1-0.2, calcium oxide 0.3-0.5, gummy powder 1-2.

2. a kind of samarium cobalt permanent magnet body with high tenacity according to claim 1, is characterized in that: preparation method comprises the following steps:

(1) urea, polysaccharide, methyl acrylate, polyethylene glycol adipate, Tripolyglycerol monostearates, three Risorex PGIS 22s, deionized water mixing, stir 10-20min at 40-45 DEG C, dry, obtains composite binding agent for subsequent use;

(2) Graphene, aluminium powder are placed in absolute ethyl alcohol and stir 10-20min, dry 4-5h at 50-60 DEG C, then 1-2h in the concentration 4-6% hydrochloric acid solution being soaked in 40-45 DEG C, after filtration, dry at 70-80 DEG C, obtain composite powder for subsequent use;

(3) by composite binding agent and the mixing of composite powder, add barium stearate, calcium chloride, ball milling 1-3 hour, obtains nonmagnetic powder for subsequent use;

(4) SmCo permanet magnetic powder, nonmagnetic powder, gummy powder are uniformly mixed in helium, obtain mixture;

(5) in the mixture of step (1), add all the other raw materials except dolomol again, in muller, 140-180 DEG C mixes;

(6) the unity powder after mixing is carried out mechanical crushing;

(7) dolomol is added in the powder that step (6) obtains, is pressed into High-density magnet, then solidify 40-80 minute at 120-160 DEG C after, cooling, after and get final product.