Description
Due to the good combination of properties such as good electrical insulating ability, flexibility, and excellent heat conductivity, the silicone rubber heating wires have been widely used in electric cushions, electric cloth, animal pets, jade mattresses, electric shoes, electric massage armchair, car windows, electric towel rack, heat-preservation-type rice cooker, etc. products as heating wires, and in air condition, refrigerator, cooler, etc. to prevent the formation of condensation on surfaces. Besides, the wires could be used as anti-freeze heating wires for pipes and tanks, etc.
There are three main models of Silicone wires:
A, SR-20
B, BSR-20
C, 2SR-20
A common silicone rubber heating wire:
SR-20
Rated temperature:150ºC–200ºC –
Rated voltage:300V-600V
Conductor: single conductor alloy or resistance wires twist into a spiral on fiberglass
insulation: silicone rubber
UL3590 UL3081 UL3066 UL3589 UL3219 UL3342 UL3077
B, braided silicone rubber heating wire: BSR-20
rated temperature:200ºC
rated voltage:300V
single conductor alloy or resistance wires twist into a spiral on fiberglass
insulation: silicone rubber
reinforced jacket: braided fiberglass layer
UL3323 UL3270 UL3762 UL3859
Except for the O.D. of the finished product, other parameters are the same or similar to those of SR-20.
C, 2SR-20
Rated temperature:150ºC-200ºC
Rated volt:300V- 600V
First layer heating conductor: resistance wires twist into a spiral on fiberglass
Second layer heating conductor:alloy wires twist into a spiral on the silicone rubber heating wire
insulation:silicone rubber.
| item | performance index | instruction | |
| insulation: silicone rubber | tensile strength | ≥4.9Mpa |
UL1581 |
| elongation | ≥ 100% | ||
| minimum average thickness | ≥ 0.4mm | UL758 | |
| Finished wire | hot deformation test | ≤ 30% | 232ºC * 1 h |
| spark test | no spark-over | 3.0KV/0.15sec; | |
| conductor resistance | standard value+10%/-5% | ||
| finished product resistance scope | 1–10000 ohm/m | ||
| Flexing test of finished prdouct | ≥20000 (no abnormalities) | ||
| bending test of finished product | ≥5000 (no abnormalities) | ||
| O.D. of finished product | 2.2+/-0.15mm | other O.D. are optional | |
| length per coil | (100-500m) | +0/-2M | |
Dia: 1.0mm~6.0mm
Voltage: Under 300V
Power: 0.1~100W/m
Resistance per meter: 0~10000ou/m
