Fujian Xingyuan Magnetic Materials Co.,Ltd

Ferrite Magnetic Compound

Magnetic compound for Extruding fridge strip

YXF Brand Strontium Plastic Bonded Ferrite Magnetic 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 fridge door magnetic strip by extrusion or injecting moulding. The strict quality control system of our plant ensures that the quality is stable and consistent.

Magnetic Characteristic


Type
Magnetic Properties
Average Particle Size(µm)
Moisture(%)






Materials
Br(mT)
bHc(kA/m)
iHc(kA/m)
(BH)max(kJ/m3)
Testing Method


YXF-1
BaFe12O19
150±10
95.5±8
183±16
4.0±0.4
Calendering
2.0~4.0
≤0.5
YXF-1b
BaFe12O19
160±5
99.5±4
199±8
4.4±0.4
Green piece
2.0~4.0
≤0.5
YXF-2
BaFe12O19
200±10
127±8
151±8
7.2±0.4
Calendering
1.1~1.4
≤0.5
YXF-2b
BaFe12O19
200±10
119±4
143±8
6.8±0.4
Calendering
1.5~1.8
≤0.5
YXF-2c
BaFe12O19
200±10
119±4
143±8
6.8±0.4
Calendering
1.8~2.1
≤0.5
YXF-2S
SrFe12O19
200±10
127±8
151±16
7.1±0.4
Calendering
1.1~1.4
≤0.5
YXF-2Sb
SrFe12O19
200±10
119±4
143±16
7.1±0.4
Calendering
1.5~1.8
≤0.5
YXF-2Sc
SrFe12O19
200±5
119±4
143±16
7.1±0.4
Calendering
1.8~2.1
≤0.5


Test result of magnetic strip used for refrigerator gaskets

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


Properties

Values





2.4 × 9 (mm)
2.4 × 9 (mm)
2.4 × 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°C
%
1.5
0.7
0.3
8.
Temp. coefficient of surface magnetic force, continuously working for 240 hours at -20°C
1.4
1.3
0.3

9.
Flexural strength (twist around a stick of Dia Φ 16mm)

Passed
Passed
Passed
10.
Torsion characteristics: when torsion around 360°

Passed
Passed
Passed


Magnetic properties of magnetic compound

Shape: cylinderSize: Dia.25.5mmTesting Temperature: 21°CMaterial: N13


RemanenceBr
Coercive ForceHcB
Intrinsic Coercive ForceHcJ
Max. Energy Products(BH)max








mT
Gs
KA/m
Oe
KA/m
Oe
KJ/m³
MGOe




193.6
1936
130.3
1637
187.4
2356
6.918
0.8693




Bd
Hd
Hm
HK
HK/HcJ







Gs
Oe
Oe
Oe
MGOe







961.0
904.8
12807
1474
0.6255




















COLOR:

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

SHAPE:

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

STORAGE

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 °C / 50% relative humidity, 6 months at a storage temperature of up to 40 °C / 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

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 Yuxiang, the written approval of sampled quality is proof of functionality. Further guarantees are not assured.

CHANGES

As the responsible supplier, YUXIANG reserves the right to make changes and modifications with regard to the enhancement and further development of the product mentioned in the contract, modifications to the specifications stipulated herein being excluded.