Technical Datasheet: Transparent Nylon T1201 (PA12, alternative to EMS TR90)
Grade: T1201, injection molding transparent PA12, domestic substitute for Swiss EMS TR series, natural transparent pellets
1. Basic Physical Properties (ISO standard, dry condition)
– Density: 1.02 g/cm³ (ISO1183), lightweight
– Light transmittance: 90%~92%, clear transparent, low haze
– Saturated water absorption (23℃, 50%RH): 1.5%, much lower than PA66, excellent dimensional stability
– Molding shrinkage: 0.6%~0.75%, suitable for precision parts
– Appearance: Natural transparent pellets
2. Thermal Properties
– Melting point Tm: 172~178 ℃ (DSC)
– HDT (0.45 MPa): 120~125 ℃
– Continuous service temperature: -40℃ ~ 110℃, excellent low-temperature toughness
– Flammability: UL94 HB (natural)
3. Mechanical Properties (23℃, dry specimen)
– Tensile strength: 48–55 MPa
– Tensile modulus: 1400–1600 MPa
– Elongation at break: >150%, high resilience, bend-resistant (key advantage for eyewear frames)
– Flexural strength: 55–65 MPa
– Charpy notched impact (+23℃): 8–10 kJ/m², good low-temperature impact resistance
4. Chemical Resistance & Other Features
– Chemical resistance: Resistant to sweat, oil, alcohol, most cosmetics and lubricants, good stress crack resistance; not resistant to concentrated strong acid
– Low friction coefficient, wear-resistant, excellent fatigue resistance
– Non-toxic, SGS available, suitable for food contact and optical eyewear
– Volume resistivity: 10¹² Ω•m, good insulation
5. Injection Molding Processing Guide
– Barrel temperature: 220~250℃ (recommended 230–240℃; yellowing risk above 260℃)
– Mold temperature: 60–90℃, higher mold temp improves transparency and reduces internal stress
– Drying requirement: 100~110℃ for 3–4 hours, moisture content ＜0.06% to avoid silver streaks & bubbles
– Processing method: Injection molding
6. Typical Applications
Eyewear frames, goggle frames, automotive oil reservoirs, transparent tubes, precision fasteners, sports components, cosmetic packaging
7. Brief Comparison with PA66
1. Transparency: T1201 high transparent; PA66 opaque
2. Toughness & resilience: T1201 excellent, flexible for repeated bending; PA66 rigid & brittle
3. Water absorption & deformation: T1201 low water absorption, stable dimension; PA66 absorbs much water and deforms easily
4. Heat resistance: PA66 has higher short-term heat resistance; T1201 is lighter and performs better at low temperature.