商品属性
产地美国
品名PFA
是否进口否
厂家(产地)美国杜邦
货号196
牌号340
加工级别注塑级
特性级别标准级
用途级别管材级,汽车部件
销售方式品牌经销
品牌美国杜邦
类型标准料
Teflon® PFA340
Perfluoroalkoxy
DuPont Fluoropolymers
产品说明：
For inventory control purposes product name may be followed byan X.
Products labeled PFA 340 and PFA 340 X are equivalent and allinformation in this document is applicable to both.
Typical Application
Applications for DuPont™ Teflon ® PFA 340 include extruded tubingand other profiles for hose, wire and cable insulation, andsleeving; industrial film; and injection or compression moldedarticles requiring superior electrical, chemical, and thermalproperties.
DuPont™ Teflon ® PFA 340 is a general-purpose fluoroplastic resinavailable in pellet form. Compared with other grades of Teflon ®PFA, its most unique features are a relatively high melt flow rate(typical MFR of 14) and properties that make it suitable for avariety of processes and demanding end uses. Table 1 shows thetypical property data for Teflon ® PFA 340.
Teflon ® PFA 340 is used when traditional extrusion and moldingprocesses are required for producing products with the superiorproperties of a fluoroplastic resin. Compared to otherthermoplastics, the high melt strength and thermal stability ofTeflon ® PFA 340 can be used to improve processing rates. Comparedwith other fluoroplastics, creep resistance at high servicetemperatures provides a superior balance and level of end-useproperties. Teflon ® PFA 340 combines the processing ease ofconventional thermoplastics with many properties similar to thoseof polytetrafluoroethylene.
Properly processed products made from neat Teflon ® PFA 340 resinprovide the superior properties characteristic of fluoroplasticresins: chemical inertness, exceptional dielectric properties, heatresistance, toughness and flexibility, low coefficient of friction,non-stick characteristics, negligible moisture absorption, lowflammability, performance at temperature extremes, and excellentweather resistance.
In a flame situation, products of Teflon ® PFA 340 resist ignitionand do not promote flame spread. When ignited by flame from othersources, their contribution of heat is very small and added at aslow rate with very little smoke.
Teflon ® PFA 340 meets the requirements of ASTM D3307, Type I
物性信息：
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| 特性 |
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| 用途 |
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| 形式 |
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| 加工方法 |
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| 物理性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 比重 | 2.15 | g/cm³ | ASTM D792 |
| 熔流率（熔体流动速率） (372°C/5.0 kg) | 14 | g/10 min | ASTM D3307, ISO 12086 |
| 吸水率 (24 hr) | < 0.030 | % | ASTM D570 |
| 硬度 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 肖氏硬度 (邵氏 D) | 55 | ASTM D2240, ISO 868 |
| 机械性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 抗张强度 | ASTM D3307, ISO 12086 | ||
| 23°C | 25.0 | MPa | ASTM D3307, ISO 12086 |
| 250°C | 12.0 | MPa | ASTM D3307, ISO 12086 |
| 伸长率 | ASTM D3307, ISO 12086 | ||
| 断裂, 23°C | 300 | % | ASTM D3307, ISO 12086 |
| 断裂, 250°C | 480 | % | ASTM D3307, ISO 12086 |
| 弯曲模量 | ASTM D790, ISO 178 | ||
| 23°C | 590 | MPa | ASTM D790, ISO 178 |
| 250°C | 55.0 | MPa | ASTM D790, ISO 178 |
| 热性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 熔融温度 | 305 | °C | ASTM D4591 |
| 电气性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 体积电阻率 | 1.0E+18 | ohms·cm | ASTM D257, ISO 1325 |
| 介电强度 | |||
| 0.250mm 1 | 80 | kV/mm | ASTM D149 |
| 0.250 mm | 80 | kV/mm | IEC 60243-1 |
| 介电常数 (1 MHz) | 2.03 | ASTM D150, IEC 60250 | |
| 耗散因数 (1 MHz) | < 2.0E-4 | ASTM D150, IEC 60250 |
| 可燃性 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| UL 阻燃等级 2 | V-0 | UL 94 | |
| 极限氧指数 | > 95 | % | ASTM D2863, ISO 4589-2 |
| 补充信息 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| Critical Shear Rate (372°C) | 50.0 | sec^-1 | |
| MIT Folding Endurance 3(200.0µm) | 1.5E+4 | Cycles | ASTM D2176 |
| Weather and Chemical Resistance: Outstanding |