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Sindanyo is the name for high temperature insulation materials. Various grades provide outstanding service in arduous applications where high temperature or heat transference are problems. Sindanyo is available in boards and machined components. The grades are variations specially selected Cement and fibres for outstanding performance. SINDANYO L21 has a continuous operating temperature up to 230 ° C. It is pigmented green for identification. SINDANYO H91 is the most developed asbestos free cement board available. The material exhibits excellent strength even at high temperatures up to 700 °C. It is grey in colour. SINDANYO can be treated to reduce the possibility for moisture absorption by a sodium silicate dipping (indicated by the suffix 3 e.g..L23) or silicone impregnated (indicated by the suffix 6 e.g. L26) L21, L23 and L26 are ideally suited for Arc chute applications having been approved and in use on transportation and power station switchgear throughout many countries and for many years. H91 is used in heat and electrical insulation applications in induction furnaces, billet heater boxes, furnaces and smelters.
Sindanyo H91Sindanyo H91 has been developed to provide outstanding service in demanding thermal applications where a high quality, high strength and machinable engineering boards is required.
Sheet size (mm): 1245 x 940)
Thickness (mm): 6-75 |
|
Test |
Method | Units | Result |
| Density | g/cm3 | 1,75 | |
|
Compressive Strength
|
Ambient
24 hours @ 350 oC
24 hours @ 500 oC
24 hours @ 700 oC |
MPa
MPa
MPa
MPa |
115
49
40
37 |
| Flexural Strength |
Ambient
24 hours @ 350 oC
24 hours @ 500 oC
24 hours @ 700 oC |
MPa
MPA
MPa
MPa |
30
16
13
13 |
| Impact Strength |
Ambient
24 hours @ 350 oC
24 hours @ 500 oC
24 hours @ 700 oC |
Kj/mm
Kj/mm
Kj/mm
Kj/mm |
4
2,4
2,4
2,4 |
| Linear Shrinkage | @ 350 oC | % | 0,36 |
| Water Absorption | 24 hours @ 23 oC | % | 15 |
| Electric Strength |
90 oC in air | KV/mm | 2,81 |
| Surface Breakdown | 90 oC in air | KV | 15 |
| Dielectric strength
Thermal conductance |
KV/mm
W/mK |
6KV/3mm
0,5W/mK | |
|
Max. continuous operating temperature |
oC | 700 |