PCT (Poly Cyclohexanedimethanol Terephthalate)
Poly(1,4-cyclohexanedimethanol terephthalate) — a semi-crystalline polyester made from terephthalic acid and cyclohexanedimethanol (CHDM) instead of ethylene glycol. Melting point 290°C and Tg 90°C, significantly higher than PET (Tm 255°C) and PBT (Tm 225°C). Excellent hydrolysis resistance and electrical insulation, especially suited for lead-free solder (SMT) reflow processes in electronics. Primary applications: LED packaging, electronic connectors for SMT assembly, automotive ignition coils, lamp sockets, high-performance electrical insulation. Dominant brand: Eastman Thermx (inventor and market leader).
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| ISO 1043 | INT | PCT | — | REF | |
| 🇺🇸 | ASTM D5927 | USA | PCT | — | 100% |
Mechanical properties — Pro
Service Range
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|---|---|---|
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| Property | Value | Unit |
|---|---|---|
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Unreinforced
| Property | Value | Unit |
|---|---|---|
| hdt_1.8mpa |
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