Changxian M78 Conformal Coatings
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Description
M78
INTRO
M78 Conformal Coating is made up of special resins, and waterproof additives. It is a solvent evaporating and then curing rapidly with moisture. M78 is a high-solid, low-viscosity system that can be used for painting, dipping and spraying.
General features
M78 is made up of special resins, and waterproofing additives. It is a fast curing by moisture after solvent evaporation. It is suitable for the protection of all kinds of electronic and electrical components.
M78 is a high-solid, low-viscosity system, which can be applied to both painting, dipping and spraying processes.
M78 can be dried at room temperature or cured by heating, making it very easy to handle.
Film characteristics:
| good gloss | Adhesion: (≤1 grade) | High hardness: (2H) |
| Moisture proof | Anti-mold | Salt spray resistant |
| chemical resistance | Oil resistance | UV tracking performance |
Performance parameters:
| Color/Appearance | yellow transparent | |
| Specific gravity (25℃) | 0.935±0.02 | |
| Viscosity (25℃, mpa) NDJ-4 rotational viscometer | 20-30 | |
| thinner | X-4 | |
| Drying time (copper sheet) | 30℃，55%RH | Surface dry: ≤5min, Real drying: 120min |
| 80℃ | Surface dry: ≤3min,Real drying: 30min | |
| Nonvolatile content (%) | 25±2 | |
| Operating temperature (℃) | -20～120 | |
| storage time | In a cool, ventilated place, sealed and stored for half a year from the date of production | |
Electrical properties
| Breakdown Strength (KV/mm) | ≥70 |
| Volume resistivity (Ω.cm) | ≥1014 |
Chemical properties:
| Oil resistance (10# transformer oil, 24H) | No peeling, wrinkling, rust, discoloration, loss of gloss, etc. |
| Acid resistance (5%NH4CL, 24H) | No peeling, wrinkling, rust, discoloration, loss of gloss, etc. |
| Alkali resistance (5% NaCO3, 24H) | No peeling, wrinkling, rust, discoloration, loss of gloss, etc. |
| Neutral salt spray test (5%NaCl, 35±2℃), 48H | No corrosion |
| Moisture resistance ((MIL-46058C)) | ≥109Ω |
| Corrosion to copper | without |
Mold resistant
| Mold resistance test (MIL-46058C) | pass through |
Heat resistance class
| Heat resistance class | Class B (130℃) |
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