With the achievement of high-density mounting, higher quality and performance are required for insulation materials used for mounting circuit boards, compared with general insulation materials. MELQUID V985 is a coating agent for moisture-proof insulation especially developed to enhance the environmental durability of the mount board, to achieve the highest performance level.
Product name
MELQUID V985（-45K、-30K、-15E、-SE）
Characteristics
- Extremely low water-vapor permeability and excellent water resistance.
- Excellent adhesive property with parts of the mount board.
- Substances subject to RoHS regulation are not used.
- An environmentally-friendly solvent that is not subject to PRTR regulation is used.
- The E type offers fluorescence that allows a visual film check with black light irradiation.
Application
- Moisture-proof coating of high-density mounting printed wiring board
- Environment-resistant insulation protection coating of various electronic parts
Types
- There are four types, with viscosity adjusted according to application.
High-viscosity type for thick film (V985-45K)
This is suitable for conducting a thick film coating to the required section with one application.
General type (V985-30K)
Its viscosity is suitable for dip coating and brush coating.
Low-viscosity type for thin film (V985-15E)
Minute pore spaces can be also sealed with low viscosity.
It offers fluorescence that allows a visual film check with black light irradiation.
Spray type (V985-SE)
Environment-resistant insulation protection coating is possible by jetting the necessary amount to the required point.
It offers fluorescence that allows a visual film check with black light irradiation.
General characteristics
| Item | Condition | Unit | V985-45K | V985-30K | V985-15E | V985-SE |
|---|---|---|---|---|---|---|
| Feature | － | － | For thick film | For general film | For thin film | Spray |
| Composition | － | － | Polyurethane | |||
| Viscosity | 25℃/B type | mPa･s | 6000 | 350 | 16 | Spray |
| Non-volatile component | 135℃/3h | % | 45 | 30 | 15 | |
| Drying time | 25℃/set to touch | min | 50 | 35 | 15 | |
| Attached film thickness | Center | mm | 0.15 | 0.043 | 0.01 | |
| Lower part | % | 122 | 121 | 100 | ||
| Fluorescence | Black light | － | No | Yes | ||
| Incombustibility?*) | UL94 | V-0 (FileNo.E120504) | ||||
| Water-vapor permeability | 150μm | g/m2/24h | 30 | |||
| Dielectric constant | Normal state | － | 3.8 | |||
| Dielectric loss tangent | Normal state | % | 2.1 | |||
| Breakdown voltage | Normal state | kV/0.1mm | 5.3 | |||
| Volume resistivity | Normal state | Ω・cm | 2.8×1015 | |||
| Cross cut adhesive property (1.0mm) |
Cu | － | 100/100 | |||
| Resist | － | 100/100 | ||||
| Paper phenol | － | 100/100 | ||||
*) Incombustibility; Achieved when double-sided coating is applied on FR-4 (plate thickness of 0.85 mm or more) certified in QMTS2 with thickness of 0.03 to 0.05 mm.
Cure condition; 80℃/2.0hr+r.t./48h
*The values in the table above are measured values, not certified values.
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Fluorescence
<Coating> 
Fluorescence
<Black light irradiation after coating>
