聚酰胺树脂，英文名称为polyamide，简称PA。俗称尼龙(Nylon)，它是大分子主链重复单元中含有酰胺基团的高聚物的总称。尼龙中的主要品种是尼龙6和尼龙66，占主导地位，尼龙6为聚己内酰胺，而尼龙66为聚己二酸己二胺，尼龙66比尼龙6要硬l2%;其次是尼龙11，尼龙12，尼龙610，尼龙612，另外还有尼龙1010、尼龙46、尼龙7、尼龙9、尼龙13，新品种有尼龙6I、尼龙9T和特殊尼龙MXD6(阻隔性树脂)等，尼龙的改性品种数量繁多，如增强尼龙、单体浇铸尼龙(MC尼龙)、反应注射成型(RIM)尼龙、芳香族尼龙、透明尼龙、高抗冲(超韧)尼龙、电镀尼龙、导电尼龙、阻燃尼龙，尼龙与其他聚合物共混物和合金等，满足不同特殊要求，广泛用作金属，木材等传统材料代用品。
性能 :PA66 聚酰胺66或尼龙66化学和物理特性PA66在聚酰胺材料中有较高的熔点。它是一种半晶体-晶体材料。PA66在较高温度也能保持较强的强度和刚度。在产品设计时，一定要考虑吸湿性对几何稳定性的影响。为了提高PA66的机械特性，经常加入各种各样的改性剂。有时为了提高抗冲击性还加入合成橡胶，如EPDM和SBR等。 PA66的粘性较低，因此流动性很好(但不如PA6)。这个性质可以用来加工很薄的元件。 它的粘度对温度变化很敏感。PA66的收缩率在1%~2%之间，加入玻璃纤维添加剂可以将收缩率降低到0.2%~1% 。收缩率在流程方向和与流程方向相垂直方向上的相异是较大的。 PA66对许多溶剂具有抗溶性，但对酸和其它一些氯化剂的抵抗力较弱。
罗地亚TECHNYL系列PA66同系列通用型号介绍
TECHNYL A 216 Good Abrasion Resistance; Good Chemical Resistance
TECHNYL A 216 S30 Good Surface Finish; Low Warpage
TECHNYL A 216 S40 Good Surface Finish; Low Warpage
TECHNYL A 216 V10 Automotive Applications;Lubricated
TECHNYL A 216 V15 Automotive Applications;Lubricated
TECHNYL A 216 V15 BLACK FA Food Contact Acceptable
TECHNYL A 216 V20 Lubricated Africa & Middle East
TECHNYL A 216 V30 Automotive Applications;Lubricated
TECHNYL A 216 V35 Africa & Middle East; Asia Pacific
TECHNYL A 216 V50 Lubricated Africa & Middle East
TECHNYL A 216S V15 Industrial Resin
TECHNYL A 216S V30 Industrial Resin
TECHNYL A 216T V33 BLACK 1 N Automotive Applications Heat Stabilized
TECHNYL A 217 Heat Stabilized; Medium Viscosity
TECHNYL A 217 BLACK 1 N Heat Stabilized; Low Smoke Emission; Medium Viscosity
TECHNYL A 217 BLACK 1NV Heat Stabilized; Medium Viscosity
TECHNYL A 217 NATURAL P Heat Stabilized; High Heat Resistance; Medium Viscosity
TECHNYL A 218 Heat Stabilized; Medium Viscosity
TECHNYL A 218 BLACK 21 N High Heat Resistance; Medium Viscosity
TECHNYL A 218 MT15 V25 Heat Stabilized; Low Warpage; Lubricated
TECHNYL A 218 MT15 V25 BLACK 21 N Heat Stabilized; Low Warpage
TECHNYL A 218 MT25 V15 Industrial Applications Heat Stabilized; Low Warpage
TECHNYL A 218 MX40 Good Surface Finish; Good Thermal Stability
TECHNYL A 218 MZ15 V25 BLACK 31N Heat Stabilized; Low Warpage
TECHNYL A 218 S40 BLACK 21 N Good Compressive Strength; Good Surface Finish
TECHNYL A 218 V13 BLACK 21 N Applications Heat Stabilized
TECHNYL A 218 V15 Automotive Heat Stabilized; Lubricated
TECHNYL A 218 V15 BLACK 21 N Heat Stabilized
TECHNYL A 218 V20 Heat Stabilized; Lubricated
TECHNYL A 218 V25 Heat Stabilized; Lubricated
TECHNYL A 218 V25 NATURAL B Bearings; Housings Grease Resistant; Oil Resistant
TECHNYL A 218 V30 Heat Stabilized; Lubricated
TECHNYL A 218 V30 BLACK 21 NS Automotive Applications; Heat Stabilized
TECHNYL A 218 V30 BLACK 34 NG Automotive Applications Lubricated
TECHNYL A 218 V35 Automotive Housings Heat Stabilized; Lubricated
TECHNYL A 218 V35 BLACK 21 N Containers; Housings Heat Stabilized
TECHNYL A 218 V35 BLACK 34 NG Automotive Applications
TECHNYL A 218 V40 Automotive Applications; Building Materials; Heat Stabilized TECHNYL A 218 V43 Good Thermal Stability; Heat Stabilized; Industrial Resin