m-Phenyl Neopentyl Glycol Gel Coat
Neogel® 8373-W-XXXX has been developed especially for marine construction, swimming pools, sanitary equipment and furniture.
vantage
Neogel® 8373-W-XXXX is an isophthalic neopentyl glycol (ISO/NPG) gelcoat with a number of important properties: ease of application, good resistance to prolonged immersion in water (good blistering properties), excellent weathering properties (less yellowing), air release, good mechanical properties according to the American ANSI-Z-124-1 standard, and approved by DNV Italia and RINA approval.
Application Characteristics
Neogel® 8373-W-XXXX is a pre-promoted rheology gel coat that is ready-to-use and available in a variety of colors in the following types:
- Sprayable (Neogel® 8373-W-XXXX)
- Brush type (Neogel® 8373-W-XXXX H)
Standard or additional versions are also available on request: - Spray type (with paraffin)
- Brush type (with paraffin)
Conventional equipment can be used for the spray type, and the following settings are recommended:
- Spray gun (nozzle φ 2.0-3.5 mm, pressure 4-5 bar)
- Airless spraying equipment (nozzle type: 18/40-21/40)
For optimum performance, the recommended actions are as follows:
- Temperature control between 18°C and 25°C
- Cure with recommended MEKP* 50% solution, adjusted between 1.0-2.5%.
- Film thickness 600-800 g/m2
*:: Butanox M50 (AkzoNobel)
Packaging, storage and handling conditions
Neogel® 8373-W-XXXX is supplied in packages of approximately 22 kg. It should be stored in its original sealed packaging at a temperature not exceeding 20°C, out of direct sunlight and away from direct heat sources.
Under these conditions, the product has a stabilization period of three months from the date of shipment. However, the stability period for the fast-drying (ΑFAST) version or the black and green/blue dark colors is two months under the recommended conditions.
Neogel® 8373-W-XXXX has a flash point of >21°C. It is flammable and should be kept away from open flames. It is flammable and should be kept away from open flames. Refer to the SAFETY DATA SHEET.
Basic gelcoat specifications
| hallmark | Test Methods | unit (of measure) | Benchmark Brush Coating Surface Adhesive Coat | Baseline Spray Top Coat |
|---|---|---|---|---|
| exterior condition | TM 2265 | - | Thixotropic liquid | Thixotropic liquid |
| Viscosity at 25°C (#4, rpm2) | TM 5042 | mPa.s | 42500 - 52000 | |
| Viscosity at 25°C (#4, rpm20) | TM 5042 | mPa.s | 5700 - 7300 | 3500 - 5200 |
| Gelation time at 25℃ | TM 2245 | minutes | 12 - 18 | 8 - 15 |
Properties of cured substances
| hallmark | Test Methods | unit (of measure) | Typical values (white brushed top coat) | Typical (white sprayed top coat) |
|---|---|---|---|---|
| Barcol hardness (*) | D 2583 | D | 67 | 40 - 45 |
| tensile strength | D 638 | MPa | 50 | 5 |
| Tensile modulus (**) | D 638 | MPa | 3650 | 3800 |
| Elongation at break (**) | D 639 | % | ≥2.5 | ≥2.5 |
| bending strength | D 790 | MPa | 95 | 85 |
| Bending modulus (**) | D 790 | MPa | 3300 | 3600 |
| Heat Deflection Temperature (HDT) 66 psi | D 648 | ℃ | ≥95 | ≥95 |
Water absorption of cured material(**)
| Methodology or certification body | unit (of measure) | Typical values (white brushed top coat) | Typical (white sprayed top coat) |
|---|---|---|---|
| RINA/Lloyd's Register mg | <60 | <60 | <60 |
| RINA/Lloyd's Register % | <0.40 | <0.40 | <0.40 |
| Det Norske Veritas mg | <80 | <80 | <80 |
| Det Norske Veritas % | <0.30 | <0.30 | <0.30 |
| ASTM D 570 mg | <11 | <12 | <11 |
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