Magnetic compound for Extruding fridge strip
PXF Brand Strontium/Barium 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 magnets by extrusion or injecting moulding. The strict quality control system of our plant ensures that the quality is stable and consistent.
Magnetic compound consist of 90% bonded magnetic ferrite powder and around 10% CPE. We supply barium ferrite magnetic compound and strontium ferrite magnetic compound. All the additives have been put into the magnetic compound. The granulated magnetic compound for extrusion can be fed into the extruder directly to extrude refrigerator magnetic strip. The magnetic compound for calendering can be directly made the flexible magnetic sheets by rolling.
|
Type |
Magnetic Properties |
Averagy Particle Size ( µ m) |
Moisture (%) | |||||
|---|---|---|---|---|---|---|---|---|
|
Materials |
Br (mT) |
bHc (kA/m) |
iHc (kA/m) |
(BH)max (kJ/m³ ) |
Testing Method | |||
|
PXF-1 |
BaFe12O19 |
150±10 |
95.5±8 |
183±16 |
4.0±0.4 |
Calendering |
2.0~4.0 |
≤0.5 |
|
PXF-1b |
BaFe12O19 |
160±5 |
99.5±4 |
199±8 |
4.4±0.4 |
Green piece |
2.0~4.0 |
≤0.5 |
|
PXF-2 |
BaFe12O19 |
200±10 |
127±8 |
151±8 |
7.2±0.4 |
Calendering |
1.1~1.4 |
≤0.5 |
|
PXF-2b |
BaFe12O19 |
200±10 |
119±4 |
143±8 |
6.8±0.4 |
Calendering |
1.5~1.8 |
≤0.5 |
|
PXF-2c |
BaFe12O19 |
200±10 |
119±4 |
143±8 |
6.8±0.4 |
Calendering |
1.8~2.1 |
≤0.5 |
|
PXF-2S |
SrFe12O19 |
200±10 |
127±8 |
151±16 |
7.1±0.4 |
Calendering |
1.1~1.4 |
≤0.5 |
|
PXF-2Sb |
SrFe12O19 |
200±10 |
119±4 |
143±16 |
7.1±0.4 |
Calendering |
1.5~1.8 |
≤0.5 |
|
PXF-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 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 plastic magnetic compound
Shape: cylinder
Size: Dia.25.5mm
Test temperature: 21 degree
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 | |||||||
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 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 /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 :
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 us, the written approval of sampled quality is proof of functionality. Further guarantees are not assumed by us.
CHANGES:
As the responsible supplier, we 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.