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7018A/B-ZR (flame retardant)
7018A/B-ZR (flame retardant) two-component black potting material
1. Instructions for use
This product is a two-component liquid potting material and a room temperature curing epoxy resin. It has a series of characteristics such as fast curing speed at heating, excellent gloss of the cured product, good insulation, and good workmanship. It is widely used in capacitors and voltages. Insulation casting of small electronic components such as transformers, etc., the flame retardancy can reach 90-VO level.
2. Properties before hardening
main agent7018A-ZR | Hardener7018B-ZR | |
color | black liquid | dark brown liquid |
Viscosity40℃(mpa.s) | 1.2×102 | 30 |
density20℃(g/cm3) | 1.7~1.8 | 1.1~1.15 |
3. How to use
A/B components are accurately weighed according to the proportioning standard, and used after fully stirring. If it is used in large-scale casting profiles, it can be completed by pouring glue several times.
Inventory conditions: placed in a cool and dark place, it can be stored for half a year.
4. Conditions of use
mixing ratio | A:B=100:20weight ratio |
gel time | 25℃×5Hour |
Available time | 25℃×3小时 Mixed amount100g |
hardening condition | 25℃×48hours or80℃×4 hours medium temperature curing |
5. Properties after hardening
Volume resistance25℃ | Ohm.Cm | 1.2×1015 |
surface resistance25℃ | Ohm | 1.3×1014 |
Withstand voltage25℃ | KV/mm2 | 16~19 |
Compressive strength25℃ | Kg/mm2 | 20~23 |
Bending strength | Kg/mm2 | 9~11 |
Impact strength | Kg/cm/mm2 | 6~9 |
Yuden rate | 1Khz | 3.8 |
Yuden loss
|
1Khz | 0.02 |
Heat distortion temperature | ℃ | 90-100 |
hardness | Shored | 80-85 |
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