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| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 1.02 g/cc | 0.0368 lb/in³ | ASTM D792 | ||
| Melt Flow | 3.7 g/10 min @Load 2.16 kg, Temperature 235 °C |
3.7 g/10 min @Load 4.76 lb, Temperature 455 °F |
ASTM D1238R | ||
| Mechanical Properties | Metric | English | Comments | ||
| Hardness, Shore D | 73 | 73 | ASTM D2240 | ||
| Tensile Strength at Break | >= 65.0 MPa | >= 9430 psi | ASTM D638 | ||
| Tensile Strength, Yield | 43.0 MPa | 6240 psi | ASTM D638 | ||
| Elongation at Break | >= 300 % | >= 300 % | ASTM D638 | ||
| Flexural Strength | 59.0 MPa | 8560 psi | ASTM D790 | ||
| Flexural Modulus | 1.45 GPa | 210 ksi | ASTM D790 | ||
| Izod Impact, Notched | 1.10 J/cm | 2.06 ft-lb/in | ASTM D256 | ||
| Thermal Properties | Metric | English | Comments | ||
| Melting Point | 178 °C | 352 °F | ASTM D3418 | ||
| Deflection Temperature at 0.46 MPa (66 psi) | 145 °C | 293 °F | ASTM D648 | ||
| Processing Properties | Metric | English | Comments | ||
| Processing Temperature | 230 °C | 446 °F | Flange Temperature for T-Die Cast Film Extrusion | ||
| Feed Temperature | 40.0 °C | 104 °F | Injection Molding | ||
| Zone 1 | 190 °C | 374 °F | For T-Die Cast Film Extrusion | ||
| 220 °C | 428 °F | Injection Molding | |||
| 230 °C | 446 °F | For 8x1 mm Tube Extrusion | |||
| Zone 2 | 210 °C | 410 °F | For T-Die Cast Film Extrusion | ||
| 225 °C | 437 °F | For 8x1 mm Tube Extrusion | |||
| 230 °C | 446 °F | Injection Molding | |||
| Zone 3 | 220 °C | 428 °F | For 8x1 mm Tube Extrusion | ||
| 230 °C | 446 °F | For T-Die Cast Film Extrusion | |||
| 240 °C | 464 °F | Injection Molding | |||
| Zone 4 | 215 °C | 419 °F | For 8x1 mm Tube Extrusion | ||
| 240 °C | 464 °F | Injection Molding | |||
| Zone 5 | 230 °C | 446 °F | Injection Molding | ||
| Die Temperature | 230 °C | 446 °F | For T-Die Cast Film Extrusion | ||
| Mold Temperature | 40.0 - 60.0 °C | 104 - 140 °F | Injection Molding | ||
| Injection Velocity | 100 mm/sec | 3.94 in/sec | Injection Molding | ||
| Die Opening | 0.0400 cm | 0.0157 in | For T-Die Cast Film Extrusion | ||
| Roll Temperature | 50.0 °C | 122 °F | Chill Roll Temperature for T-Die Cast Film Extrusion | ||
| Drying Temperature | 80.0 °C | 176 °F | Option 1 | ||
| 100 °C | 212 °F | Option 2 | |||
| 110 °C | 230 °F | Option 3 | |||
| Dry Time | 2 - 4 hour | 2 - 4 hour | Option 3 | ||
| 4 - 6 hour | 4 - 6 hour | Option 2 | |||
| 6 - 8 hour | 6 - 8 hour | Option 1 | |||
| Injection Pressure | 40.0 - 50.0 MPa | 5800 - 7250 psi | Injection Molding (Injection pressure should be increased when molding thin wall parts. Pressure up to 75 bar can be used here.) | ||
| Hold Pressure | 25.0 - 50.0 MPa | 3630 - 7250 psi | Injection Molding | ||
| Back Pressure | 5.00 MPa | 725 psi | Injection Molding | ||
| Screw Speed | 15 - 76 rpm | 15 - 76 rpm | For 8x1 mm Tube Extrusion | ||
| De |
|||||
| C/R | 3-3.5:1 | For 8x1 mm Tube Extrusion | |||
| Calibrating Vacuum | 100 mbar | For 8x1 mm Tube Extrusion | |||
| Calibration | 9.95 mm | For 8x1 mm Tube Extrusion | |||
| Compression Ratio | 2.5-3.5:1 | Injection Molding | |||
| min 3:1 | For 8x1 mm Tube Extrusion | ||||
| Die Diameter | 16 mm | For 8x1 mm Tube Extrusion | |||
| Die Width | 300 mm | For T-Die Cast Film Extrusion | |||
| Extractables | 2% | Tolerance (DIN 73378 EtOH 18hr) 2% | |||
| Extruder | Barmag, Screw Diameter = 30 mm | For T-Die Cast Film Extrusion | |||
| Extruder Characteristics | 65 mm screw diameter | For 8x1 mm Tube Extrusion | |||
| Film Thickness | 60 microns | For T-Die Cast Film Extrusion | |||
| Flight Depth in the Feeding Zone | 10-15% of Screw Diameter | Injection Molding | |||
| Flight Depth in the Metering Zone | 5-7% of Screw Diameter | Injection Molding | |||
| Haul Off Speed | 5 m/min | For T-Die Cast Film Extrusion | |||
| Haul Speed | 10-55 m/min | For 8x1 mm Tube Extrusion | |||
| L/D Ratio | 25:1 | For 8x1 mm Tube Extrusion | |||
| min 20:1 | Injection Molding | ||||
| Length of Compression Zone | 25-45% of total screw length | Injection Molding | |||
| 30% of screw length | For 8x1 mm Tube Extrusion | ||||
| Length of Feeding Zone | 20-40% of total screw length | Injection Molding | |||
| 30-40% of screw length | For 8x1 mm Tube Extrusion | ||||
| Length of Metering Zone | 30-45% of screw length | For 8x1 mm Tube Extrusion | |||
| 35-45% of total screw length | Injection Molding | ||||
| Mandrel Diameter | 12 mm | For 8x1 mm Tube Extrusion | |||
| Peripheral Screw Speed | 10 m/min | Injection Molding | |||
| Water Temperature | 10-18°C | For 8x1 mm Tube Extrusion | |||
概述
PA塑料(尼龙，聚酰胺)，英文名称:Polyamide
PA的品种繁多，有PA6、PA66、PAll、PAl2、PA46、PA610、PA612、PAl010等，以及近几年开发的半芳香族尼龙PA6T和特种尼龙等很多新品种。
物理性能
比重：PA6 1.14克/立方厘米，PA66 1.15克/立方厘米，PA1010 1.05克/立方厘米
成型收缩率：PA6 0.8-2.5% ，PA66 1.5-2.2%
成型温度：220-300℃
干燥条件：100-110℃/12小时
坚韧、耐磨、耐油、,耐水、抗酶菌、但吸水大
燃烧鉴别方法：火焰上端黄色，下端蓝色，燃烧后塑料熔滴落，起泡，离火后特殊的羊毛，指甲烧焦味和带芹菜味
|
尼龙6： |
弹性好，冲击强度，吸水较大 |
|
尼龙66： |
性能优于尼龙6，强度高，耐磨性好 |
|
尼龙610： |
与尼龙66相似，但吸水小，刚度低 |
|
尼龙1010： |
半透明，吸水小。耐寒性较好。适于制作一般机械零件、减磨耐磨零件、传动零件以及化工、电器、仪表等零件 |
成型性能
1、结晶料，熔点较高，熔融温度范围窄，热稳定性差，料温超过300度、滞留时间超过30分钟即分解。较易吸湿，需干燥，含水量不得超过0.3%。
2、流动性好，易溢料。宜用自锁时喷嘴，并应加热。
3、成型收缩范围及收缩率大，方向性明显，易发生缩孔、变形等。
4、模温按塑件壁厚在20～90度范围内选取，注射压力按注射机类型、料温、塑件形状尺寸、模具浇注系统选定，成型周期按塑件壁厚选定。树脂粘度小时，注射、冷却时间应取长，并用白油作脱模剂。
5、模具浇注系统的形式和尺寸，增大流道和浇口尺寸可减少缩水。
聚酰胺的不足之处在于：由于热膨胀和吸水性所至的尺寸精度不够，耐酸性差，硬度和弹性模量不够。经改良以后，也是比较优秀的工程塑料之一。
应用
汽车制造方面
用于制造燃料滤网、燃料过滤器、罐、捕集器、储油槽、发动机汽缸盖罩、散热器水缸、平衡旋转轴齿轮。也可用在汽车的电器配件、接线柱等。另外，它还可用作驱动、控制部件等。
电器电子工业
可用于制造电饭锅、电动吸尘器、高频电子食品加热器，电器产品的接线柱、开关和电阻器等。
医疗器械仪器
用于医用输血管、取血器、输液器等。PA单丝可做外科手术缝线、假发等；另外，电子打字机的数字旋转盘、接线柱、传动齿轮、印刷机的带式过滤片等。
其它方面
用于制作一次性打火机体、碱性干电池衬垫，摩托车驾驶员的头盔，办公机器外壳，办公用椅的角轮、座和靠背，冰鞋、钓鱼线等，PA薄膜气体阻隔性能优良，而且耐油性、耐低温冲击性、耐穿透性好，可用于肉、火腿肠等冷冻食品的包装。聚酰胺还可棒材和板材，也作齿轮或其它传动装置。
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