PA (nylon) injection molding
PA is polyamide.
Specific gravity: PA6-1.14 grams / cubic centimeter ，PA66-1.15grams / cubic centimeter ，PA1010-1.05grams / cubic centimeter .
Injection mold shrinkage:PA6-0.8-2.5%、PA66-1.5-2.2%
Drying material: 100-110℃? 12 hours
Material properties: tenacity, abrasion resistance, oil resistance, water resistance, enzyme and bacteria-resistant , but absorbent is big; nylon 6 with good elasticity, high impact strength, water absorption; nylon 66 is superior to nylon 6, high strength, good wear resistance; Nylon 610 si similar as nylon 66 but the small water absorption, low stiffness; Nylon 1010 is translucent nylon with water absorption and good resistance to cold.
Injection molding performance:
1,Crystalline materials, high melting point and narrow melting temperature range, poor thermal stability, if melt temperature is over 300 degrees and PA stay in injection molding barrel more than 30min, it will be decomposed. Easy to absorb water, need to dry before injection molding, the moisture content shall not exceed 0.3% on injection molding.
2,Good fluidity, easy to flash
3, Injection molding shrinkage is big, injection molding shrinkage is distinct, easy to have shrinkage cavity and deformation.
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