PA66
PA66 (Polyamide 66 / Nylon 66) is a semi-crystalline engineering thermoplastic produced by polycondensation of hexamethylenediamine and adipic acid. It was the first commercialized polyamide. PA66 features a higher melting point (~260°C), greater stiffness, and better short-term heat resistance than PA6, making it a preferred engineering plastic in automotive and Electronics & Electrical applications.
Basic Parameters：
|
Parameter |
Value |
|
Formula |
[-NH-(CH2)6-NH-CO-(CH2)4-CO-]n |
|
Melting Point (°C) |
≈260°C |
|
Tg (°C) |
≈60°C |
|
Density (g/cm3) |
1.13–1.15 |
|
Water Absorption (%, 23°C/50%RH) |
1.0–1.3 |
|
Mold Shrinkage (%) |
0.5–1.2 |
|
Tensile Strength (MPa) |
80–90 |
|
Flexural Modulus (MPa) |
2900–3300 |
Performance Characteristics：
- Higher Tm & stiffness: ~260°C, stiffer than PA6
- Excellent short-term heat resistance: outperforms PA6 >250°C
- High strength & wear resistance: outstanding unfilled properties
- Good chemical resistance: oils, solvents, hydrocarbons
- Low friction: excellent wear resistance & self-lubrication
- Fast crystallization: short cycles, high productivity
- Lower water absorption than PA6: better dimensional stability
Product Series：
- Base resins: injection / extrusion
- GF reinforced: GF15%–50%
- Mineral-filled
- Flame-retardant: halogen-free V0/V2
- Impact-modified
- Heat-stabilized
- LFT: GF40%–60%
Application：
- Automotive: intake manifolds, engine covers, thermostat housings, radiator caps, gears
- E&E: connectors, circuit breakers, switchgear housings, terminal blocks
- Industrial: gears, bearings, cams, guide rails
- Consumer: power tool housings, furniture fittings, sports equipment
- Cable management: cable ties, conduits, junction boxes
keywords: PA66
classification: Product
PA66 (Polyamide 66 / Nylon 66) is a semi-crystalline engineering thermoplastic produced by polycondensation of hexamethylenediamine and adipic acid. It was the first commercialized polyamide. PA66 features a higher melting point (~260°C), greater stiffness, and better short-term heat resistance than PA6, making it a preferred engineering plastic in automotive and Electronics & Electrical applications.
Basic Parameters：
|
Parameter |
Value |
|
Formula |
[-NH-(CH2)6-NH-CO-(CH2)4-CO-]n |
|
Melting Point (°C) |
≈260°C |
|
Tg (°C) |
≈60°C |
|
Density (g/cm3) |
1.13–1.15 |
|
Water Absorption (%, 23°C/50%RH) |
1.0–1.3 |
|
Mold Shrinkage (%) |
0.5–1.2 |
|
Tensile Strength (MPa) |
80–90 |
|
Flexural Modulus (MPa) |
2900–3300 |
Performance Characteristics：
- Higher Tm & stiffness: ~260°C, stiffer than PA6
- Excellent short-term heat resistance: outperforms PA6 >250°C
- High strength & wear resistance: outstanding unfilled properties
- Good chemical resistance: oils, solvents, hydrocarbons
- Low friction: excellent wear resistance & self-lubrication
- Fast crystallization: short cycles, high productivity
- Lower water absorption than PA6: better dimensional stability
Product Series：
- Base resins: injection / extrusion
- GF reinforced: GF15%–50%
- Mineral-filled
- Flame-retardant: halogen-free V0/V2
- Impact-modified
- Heat-stabilized
- LFT: GF40%–60%
Application：
- Automotive: intake manifolds, engine covers, thermostat housings, radiator caps, gears
- E&E: connectors, circuit breakers, switchgear housings, terminal blocks
- Industrial: gears, bearings, cams, guide rails
- Consumer: power tool housings, furniture fittings, sports equipment
- Cable management: cable ties, conduits, junction boxes
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