Engineering thermoplastic
Polycarbonate
Engineering polycarbonate compounds from Japan
A tough, heat-resistant engineering thermoplastic, supplied as standard, UV-stabilised, mould-release, flame-retardant, glass-fibre and carbon-fibre reinforced grades.
- Group
- Advanced materials
- Grades listed
- 8
- Data tables
- 1
- Supply
- Import · Indent
Overview
Applications
- Automotive
- Electronics
- Electrical
- Industrial components
- Consumer products
Industries
Polycarbonate (PC) is an amorphous engineering thermoplastic known for high impact strength, dimensional stability, heat resistance and — in natural grades — optical clarity. It is processed mainly by injection moulding.
The grades we supply are compounded for specific needs: standard flow grades in three viscosities (K-20, K-30, K-40), versions with mould release (MRA), UV stability (UV) or both (UVR), flame-retardant grades, glass-fibre reinforced grades and a carbon-fibre grade. Recycled polycarbonate is available as the R series.
Polycarbonate absorbs about 0.2% moisture at room temperature, so pellets must be dried to below 0.02% before moulding. Drying and moulding conditions for every grade are in the processing guide.
Grades
Grade
overview
K-20 / K-30 / K-40Standard grades, three melt viscositiesK-(20/30/40)MRAMould releaseK-(20/30/40)UVUV stabilityK-(20/30/40)UVRUV stability + mould releaseK-30FR · KFN-30Flame-retardant gradesKG / KGN-(10/15/20/30)MRA · KG-30F15Glass-fibre reinforced gradesK-30CF10Carbon-fibre gradeR seriesRecycled polycarbonate — see Recycled Polycarbonate
Technical data
Properties
| Grades | Nozzle (°C) | Front (°C) | Middle (°C) | Rear (°C) | Mould (°C) | Injection pressure (kgf/cm²) | Injection speed | Back pressure (kgf/cm²) | Screw speed (rpm) |
|---|---|---|---|---|---|---|---|---|---|
| K-20/30/40 · K-(20/30/40)MRA · K-(20/30/40)UV · K-(20/30/40)UVR · K-30FR · KFN-30 | 250–290 | 270–300 | 270–300 | 270–300 | 75–100 | 500–1800 | Mid–High | 50–100 | 40–80 |
| KG-(10/15/20/30)MRA · KGN-(10/15/20/30)MRA · KG-30F15 · K-30CF10 | 280–300 | 290–310 | 280–300 | 270–300 | 80–120 | 500–1500 | Mid–High | ≤ 100 | 40–80 |
| RS-1340 | 310 | 310 | 300 | 290–300 | 130–150 | 300–1000 | Mid–High | 270–300 * | 0–10 * |
Reference only — adjust for part design and ambient conditions.
FAQ
Questions
How long should polycarbonate be dried before moulding?
In a tray dryer with hot air, for more than 4 hours at 120 °C with a pellet layer no higher than 3 cm. In a hopper dryer, keep the inlet air at 100–120 °C. The target moisture content is below 0.02%.
What cylinder temperature is used for K-20/30/40 grades?
Nozzle 250–290 °C, front, middle and rear zones 270–300 °C, with a mould temperature of 75–100 °C. See the processing guide for all grades.
Is recycled polycarbonate available?
Yes — the R series (R-20, R-30, R-40 with MRA, UV and UVR versions, and the post-consumer grade R-20E), with Eco Leaf and Carbon Footprint of Products declarations.
Related materials
Recycled Polycarbonate — R Series
Recycled polycarbonate grades R-20, R-30 and R-40 (each with MRA, UV and UVR versions) and the post-consumer grade R-20E...
High-performance polymerPPS — Recycled RS Series
Recycled PPS (RS series) with Eco Leaf and Carbon Footprint of Products declarations, including the injection grade RS-1...
Recycled high-performance polymerRecycled PEI — RPEI Series
Recycled polyetherimide in a natural grade (RPEI-10) and a 30% glass-fibre reinforced grade (RPEI-10G30).
Next step
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