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Mica for Nylon Reinforcement
Imerys mica grades for plastics provide cost-effective improvements in the critical properties of many thermoplastic composites, particularly those based on polypropylene (PP), nylon 6 and nylon 6,6 resins.
Mica improves thermoplastic composites
Mica can be incorporated in resin systems by processing dry blends of mica with powdered resins or added in masterbatch concentrate. the resulting composites may be fabricated by standard
thermoplastics processing methods, e.g., injection molding, blow molding, thermoforming, extrusion, rotomolding, etc. typical enduse applications for mica-reinforced composites are in formed automotive products such as fenders, fascia and seat backs and in plastic casings requiring outstanding stiffness and/or sound and vibration dampening.
Mica occurs in a book-like form, which is delaminated into extremely thin, high-aspect ratio particles that are tough and flexible. Imerys mines silvery white muscovite mica in Kings Mountain, North Carolina for use in color-sensitive applications. phlogopite mica is processed in Boucherville, Quebec and provides even higher heat resistance for plastic composites.
When compared to virgin nylon resin and to other mineral additives, Imerys mica offers:
Significantly higher flexural modulus
Dramatically improved heat deflection temperature
Warpage essentially eliminated versus glass fibers due to low shrinkage in both parallel and perpendicular directions
Reduced coefficient of linear thermal expansion (cLTe)
Lightweight solution to suppress sound and vibration
Improved electrical insulation properties
Imerys Mica Grades for Plastic Composites
| Typical Properties | |||||||
|---|---|---|---|---|---|---|---|
| Grades | Color | Mean Particle Size (µm) | Bulk Density (lbs/ft3) | Shape Factor (Jennings) | Surface Area (m2/g) |
Specific Gravity | Product Type |
| WG-325 | White | 35 | 11 | 90 | 4.4 | 2.8 | Wet Ground |
| C-3000 | White | 25 | 13 | 70 | 5.4 | 2.8 | Micronized |
| L-135 | White | 260 | 14 | - | 1.2 | 2.8 | Flake |
| 325-HK | Bronze | 30 | 14 | 80 | 2.7 | 2.8 | Dry Ground |
| 200-HK | Bronze | 65 | 13 | 60 | 2.1 | 2.8 | Dry Ground |
| 150-S | Bronze | 140 | 15 | 135 | 2.2 | 2.8 | Dry Ground |
WG-325, C-3000 & L-135 are Muscovite Micas.
325-HK, 200-HK & 150-S are Phlogopite Micas.
Product Related Literature
Imerys Mica for Nylon Reinforcement [1.21MB]
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