High Temperature Resistant PC Pellets are a long-term heat-aged polycarbonate grade built for components that must keep mechanical, electrical and surface properties over years of continuous elevated-temperature exposure, rather than only surviving a short heat deflection test. The formulation is based on a PC resin matrix combined with heat-aging stabilizers and antioxidant packages that slow down chain scission, discoloration and impact loss inside hot-running housings. In our wall-switch grade development, long-term heat aging reliability is one of the core requirements alongside flame retardance and mechanical strength, because switch panels remain warm inside wall boxes for the whole service life of the installation. For power-adjacent parts, the compound can be tuned to a high GWIT level of at least 775 C, matching the demand-supply side of high-temperature appliance electrics. The pellets retain the basic flow and impact balance of PC while pushing the long-term ceiling higher. The practical difference from a high HDT grade is that this family is qualified around time at temperature: the customer cares about what the part looks and feels like after three to five years inside a closed, warm enclosure, not just whether it passes a one-hour deflection test on a hot plate.
On the manufacturing side, we run long-term aging evaluations on each development lot so that the customer can qualify the material against a defined service-temperature and time target instead of relying on a single HDT number. The compounding line is operated for continuous-production consistency, with controlled feeding of the heat-aging package and routine lot checks, so that pellets delivered months apart perform the same in the customer's mold. Because heat-aging performance is sensitive to how the stabilizer package is dispersed, we treat compounding temperatures, venting and filtration as part of the process control, which protects the long-term reliability the grade is sold on.
Specifications
|
Parameter |
Specification |
|
Material Family |
Modified Polycarbonate (PC) |
|
Long-term Heat Aging |
Stabilized formulation |
|
GWIT (high-temp electric grade) |
>= 775 C (tunable grade) |
|
Long-term Service Temperature |
-40 C to +120 C |
|
Flame Rating |
UL94 V-2 natural / V-0 on request |
|
Density |
1.2 g/cm3 |
|
Form |
Cylindrical pellets |
|
Color |
Natural / custom on request |
Applications
|
Application |
Why this grade fits |
|
Wall switch panels and internal bases |
Switch panels stay inside wall boxes near current-carrying parts for years; the heat-aging stabilized formula reduces long-term yellowing, embrittlement and deformation, which is why it is paired with flame-retardant and low-stress tuning in our switch-grade work. |
|
Power adapter and smart socket housings |
Adapters and smart sockets run warm around the clock and require high GWIT (>=775 C) and V-0 performance; this grade is tuned for that continuous hot, electrical environment. |
|
Automotive lamp internal structures |
Headlamp and fog-lamp internal brackets sit close to bulbs and drivers for thousands of hours; the long-term heat-aging package helps the brackets retain strength and color stability over the lamp's lifetime. |
Customization
We can adjust the heat-aging stabilizer level, GWIT and CTI target, flame-retardant package (V-2 / V-0), color and gloss, and add anti-stress-cracking tuning based on your application and service-temperature requirement.
Packaging & Transportation
Export packaging is performed according to customer requirements and mutual agreement. Shipping terms supported include EXW, FOB and DDP.
FAQ
Q: Do you have your own R&D team?
A: Yes, we have a strong and professional in-house Research & Development team.
Q: How long does it take for custom sample development?
A: The development cycle for custom samples is 5 to 7 days.
Q: How do you control product quality?
A: We control quality through systematic measures covering the entire process from R&D and production to final delivery, strictly executing standards and feedback mechanisms.
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