PA6T Mitsui Chemicals A335
PA6T Mitsui Chemicals A335 Resin
Material Introduction: PA6T Mitsui Chemicals A335 is a 35% glass‑fiber‑reinforced high‑temperature‑resistant, high‑rigidity PA6T engineering plastic. Featuring superior heat resistance, outstanding mechanical strength, good dimensional stability and chemical resistance, it is widely used in automotive, electronic‑electrical and other industries.
Main Applications
Automotive industry: Cylinder head covers, oil pump housings, hydraulic‑system pistons, cooling‑system components, rollers and pulley parts.
Electronic‑electrical industry: Specially for SMT (Surface‑Mount‑Technology) electronic connectors and other electrical‑electronic components.
Mechanical parts: General‑purpose mechanical components.
Performance Parameters
| Performance Category | Test Standard | Unit | Typical Value | Remarks & Interpretation |
|---|---|---|---|---|
| Physical Properties | ||||
| Density | ASTM D792 | g/cm³ | 1.48 | 35% glass‑fiber reinforced grade |
| Water Absorption (23℃,24hr) | ASTM D570 | % | 0.30 | ‑ |
| Water Absorption (100℃,24hr) | ASTM D570 | % | 1.8 | ‑ |
| Molding Shrinkage (flow direction) | ASTM D955 | % | 0.30 | ‑ |
| Molding Shrinkage (cross‑flow direction) | ASTM D955 | % | 0.60 | ‑ |
| Mechanical Properties | ||||
| Tensile Strength at Break | ASTM D638 | MPa | 240 (dry) / 220 (wet) | Property variation upon moisture absorption |
| Elongation at Break | ASTM D638 | % | 3.0 | Reinforced low‑ductility feature |
| Flexural Modulus | ASTM D790 | MPa | 12000 (dry) / 11000 (wet) | ‑ |
| Flexural Strength | ASTM D790 | MPa | 360 (dry) / 320 (wet) | ‑ |
| Izod Notched Impact Strength | ASTM D256 | J/m | 130 (dry) / 150 (wet) | Toughened after moisture absorption |
| Rockwell Hardness (M‑scale) | ASTM D785 | ‑ | 110 | ‑ |
| Thermal Properties | ||||
| Heat‑Distortion Temperature (HDT,1.8 MPa) | ASTM D648 | °C | 310 | Unannealed condition |
| Melting Point (Tm) | DSC | °C | 320 | High‑melting‑point semi‑aromatic polyamide |
| Glass Transition Temperature (Tg) | DSC | °C | 125 | ‑ |
| Coefficient of Linear Thermal Expansion (flow) | ASTM D696 | cm/cm/°C | 2.0E‑5 | ‑ |
| Coefficient of Linear Thermal Expansion (cross‑flow) | ASTM D696 | cm/cm/°C | 4.5E‑5 | Anisotropic for glass‑filled grade |
| Electrical Properties | ||||
| Volume Resistivity | ASTM D257 | Ω·cm | 1.0E+16 | Excellent insulation performance |
| Dielectric Strength | ASTM D149 | kV/mm | 27 | ‑ |
| Dielectric Constant (1 MHz) | ASTM D150 | ‑ | 4.50 | ‑ |
| Dissipation Factor (1 MHz) | ASTM D150 | ‑ | 0.018 | ‑ |
| Flammability | ||||
| UL94 Rating | UL 94 | ‑ | HB | 0.75 mm specimen, non‑flame‑retardant grade |
Injection Molding Parameters
| Processing Item | Recommended Range / Condition | Notes & Explanations |
|---|---|---|
| Drying Treatment | Hot‑air drying at 110 ℃ for 2‑6 h | Critical step to prevent performance degradation caused by hydrolysis. Use immediately after drying or seal properly for thermal preservation. |
| Barrel Rear Zone Temperature | 315‑330 ℃ | High processing temperature required for high‑melting‑point PA6T |
| Barrel Middle Zone Temperature | 320‑335 ℃ | ‑ |
| Barrel Front Zone Temperature | 325‑340 ℃ | ‑ |
| Nozzle Temperature | 325‑340 ℃ | ‑ |
| Mold Temperature | 90‑140 ℃ | Higher mold temperature improves crystallinity and dimensional stability |
| Injection Speed | Medium speed | ‑ |
| Screw Speed | 150 rpm | ‑ |
| Hopper Temperature | 50‑90 ℃ | Prevent re‑moisture‑absorption of dried pellets |
Disclaimer: All above data is for reference only.
