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Magnetic compound for magnet strips of door gasket

Magnetic compound for Extruding fridge strip
magnetic compoundDXF series of Bonded Ferrite Magnetic compound, including Bonded Barium Ferrite Compound and Bonded Strontium Ferrite Compound are suitable for making various bonded magnets. They have good compatibility with different kinds of composite materials, such as nylon, resin, polyvinyl chloride and rubber etc.. Due to the large particle size, such powders have high filling capacity. They can be used for making different kinds of magnets by extrusion or infecting moulding. The strict quality control system of our plant ensures that the quality is stable and consistent.

Type Magnetic Properties Moisture (%)
Materials Br (mT) bHc (kA/m) iHc (kA/m) (BH)max (kJ/m3 ) Testing Method
DXF-1 BaFe12O19 150±10 95.5±8 183±16 4.0±0.4 Calendering =0.5
DXF-1b BaFe12O19 160±5 99.5±4 199±8 4.4±0.4 Green piece =0.5
DXF-2 BaFe12O19 200±10 127±8 151±8 7.2±0.4 Calendering =0.5
DXF-2b BaFe12O19 200±10 119±4 143±8 6.8±0.4 Calendering =0.5
DXF-2c BaFe12O19 200±10 119±4 143±8 6.8±0.4 Calendering =0.5
DXF-2S SrFe12O19 200±10 127±8 151±16 7.1±0.4 Calendering =0.5
DXF-2Sb SrFe12O19 200±10 119±4 143±16 7.1±0.4 Calendering =0.5
DXF-2Sc SrFe12O19 200±5 119±4 143±16 7.1±0.4 Calendering =0.5

Test result of magnetic strip used for refrigerator gaskets

Characteristics for extruded strip
(measured on finished extruded strip dim. 2.4 x 9 mm with insulation)

Properties

 

Values
2.4 x 9 (mm) 2.4 x 9 (mm) 2.4 x 9 (mm)
1. Hardness Shore Hs (A) 96 96.2 96.6
2. Density g/cm3 3.55 3.76 3.57
3. Force of cohesion
(with 0.5mm air gap) 		g/cm 72.4 272.4 72.4
4. Max. surface magnetic induction mT 75 71 74
5. Tear resistance kg/cm2 72 76 68
6. Crack elongation rate % 124 107 87
7. Temp. coefficient of surface magnetic force, continuously working for 240 hours at 80 % 1.5 0.7 0.3
8. Temp. coefficient of surface magnetic force, continuously working for 240 hours at -20 % 1.4 1.3 0.3
9. Flexural strength (twist around a stick |µ 16mm)   Passed Passed Passed
10. Torsion characteristics: when torsion around 360   Passed Passed Passed

Magnetic properties of magnetic compound

Shape: cylinder
Size: Dia.25.5mm
Test temperature: 21
Material: N13

Remanence
Br		 Coercive Force
HcB		 Intrinsic Coercive Force
HcJ		 Max. Energy Products
(BH)max.
T Gs KA/m Oe KA/m Oe KJ/m3 MGOe
.1936 1936 130.3 1637 187.4 2356 6.918 .8693
Bd Hd Hm HK HK/HcJ
Gs Oe Oe Oe  
961.0 904.8 12807 1474 .6255

magnetic compound       magnetic compound

color of magnetic compound:

White, black, gray, light yellow, light black, porcelain white, etc, anyway, specific hardness, color of PVC compound could be made as per customers's demands.

shape of magnetic compound:

Dimensions and tolerances as well as polarity correspond to the relevant valid XIAMEN DEXING drawing.

storage of magnetic compound:

In general, long storage times in a humid and got climate may results in brittleness of the magnetic strip. The storage time should not exceed: 12 months at a storage temperature of up to 25 /50% relative humidity, 6 months at a storage temperature of up to 40 /50% relative humidity.

In case of higher temperatures and humidities, the storage time should be reduced accordingly. The cartons should remain sealed during storage in order to avoid possible hardening of the magnetic strip caused by long-term exposure to light. Permissible stacking height for stationary storage: tree pallets on top of each other.

function of magnetic compound:

We guarantee a series delivery according to specification. The customer determines the suitability of our products of the specific application by way of appropriated functional tests of series delivery. For Dexing, the written approval of sampled quality is proof of functionality. Further guarantees are not assumed by Dexing

fridge magnet