What is polyamide 6 material?

Polyamide 6 (PA6) Industrial Survival Manual

1. Fatal Defects in the Molecular Chain

Hydrogen Bond Defect: Random arrangement of amide groups → Molecular chain slippage after water absorption, strength drops by 40% (PA66 only loses 25%)
Cyclic Oligomer Trap: 12% residual cyclic trimers during polymerization → Vaporize during injection molding to form subcutaneous bubbles, gears appear like a "honeycomb" under X-rays

2. The Life and Death Boundaries of Performance

3. Black Market Rules for Modification

Reinforcing Material Swapping: Talc masquerading as fiberglass → Heat distortion temperature falsely labeled 70℃ (fan bracket softens at 100℃, causing plane crash)
Toughening agent toxicity: Adding recycled tire rubber powder → helmet cracks upon impact (worker's skull perforation case)
Flame retardant murder: Banning polybrominated diphenyl ethers → release of dioxins in fire (firefighter dies from pulmonary fibrosis)

4. The Blood and Tears Law of Application

5. The Death Game of Recycled Materials

The Three-Reuse Law: First Reuse: 90% performance retained → cheap toys; Second Reuse: impact strength halved → furniture accessories; Third Reuse: molecular chain fragmentation → Safety gear tooth breakage (elevator fall into shaft case)
Toxicity escalation: Recycled flame retardant cracking → releases polybrominated dibenzofurans (strong carcinogens)