Temperature Resistance & Aging Specification Of Nylon Plastic Fasteners, PA6/PA66 High & Low Temperature Resistant Selection Guide
Temperature Resistance & Aging Specification Of Nylon plastic fasteners, PA6/PA66 High & Low Temperature Resistant Selection Guide
Nylon insulating spacers, plastic cable clips and wire ties are core insulating fixing parts for electrical, vehicle and new energy equipment. Under alternating high and low temperature conditions, improperly selected plastic parts suffer high-temperature softening & slipping, low-temperature brittle cracking and long-term aging deformation, causing wire falling off and short circuit risks. Many purchasers only distinguish material types without checking temperature resistance grades, resulting in batch after-sales defects.
1. Temperature & Aging Performance Comparison: PA6 VS PA66
| Performance Parameter | PA6 Nylon Fastener | PA66 Nylon Fastener |
| Long-term Working Temp | 85℃~95℃ | 100℃~120℃ |
| Short-term Max Temp | 130℃ | 160℃ |
| Low-temperature Brittleness Limit | -15℃, easy to crack | -30℃, excellent low-temperature toughness |
| Water Absorption & Humidity Stability | High, easy to expand & deform | Low, superior dimensional stability |
| Thermal Oxygen Aging Resistance | Average, easy to yellow & brittle | Excellent, suitable for sealed high-temp cabinets |
| Application Scenario | Indoor normal temp weak current equipment | Vehicle, energy storage, outdoor high-temp equipment |
2. Selection Standard For High & Low Temperature Working Conditions
1. Indoor normal-temperature industrial control & weak current cabinets: PA6 nylon fasteners with cost-effective performance; 2. Vehicle engine cabin, charging pile internal parts: PA66 mandatory for high-temperature resistance & structural stability; 3. Northern outdoor & low-temperature storage equipment: Toughened modified PA66 to avoid low-temperature cracking; 4. Sealed energy storage cabins & heat-generating equipment: Anti-aging modified PA66 to prevent long-term thermal failure.
3. Rectification For Common plastic fastener Aging Defects
1. Clip slipping under high temperature: Replace PA6 with high-temperature resistant PA66; 2. Winter low-temperature cracking: Adopt toughened modified nylon instead of ordinary material; 3. Humid environment expansion & over-tight assembly: Low-water-absorption PA66 for stable dimension; 4. Long-term yellowing & pulverization: UV-resistant modified nylon for outdoor projects.