东莞市广裕塑胶原料有限公司
美国科慕PFA 350 高粘度 挤出级 吹塑级 流延薄膜 衬里 吹塑 成型应用
PFA塑料为少量全氟丙基全氟乙烯基醚与聚四氟乙烯的共聚物。熔融粘结性增强，溶体粘度下降，而性能与聚四氟乙烯相比无变化。此种树脂可以直接采用普通热塑性成型方法加工成制品。适于制作耐腐蚀件，减磨耐磨件、密封件、绝缘件和医疗器械零件，高温电线、电缆绝缘层，防腐设备、密封材料、泵阀衬套，和化学容器。
Teflon? PFA 350
全氟烷氧基
DuPont Fluoropolymers
产品说明：
For inventory control purposes product name may be followed by an X.
Products labeled PFA 350 and PFA 350 X are equivalent and all information in this document is applicable to both.
Typical Application
Applications for DuPont? Teflon ? PFA 350 include extruded tubing for use in handling aggressive fluids at high pressures; chemical linings for pipes used in the chemical processing industry; film for high flex service; and traditional extruded, injection-molded, or blow-molded articles requiring the unique performance of Teflon ? .
Description
DuPont? Teflon ? PFA 350 is a general-purpose fluoroplastic resin available in pellet form. Compared with other grades of Teflon ? PFA, its most unique features are a relatively low flow rate, greatly increased flex life, and enhanced resistance to environmental stress-cracking over both Teflon ? PFA 340 and 345 (Teflon ? PFA 350 has a typical MIT folding endurance of 500,000*, compared to that of 15,000 and 50,000 for Teflon ? PFA 340 and 345 respectively). Teflon ? PFA 350 is preferred when extended service is required in hostile environments involving chemical, thermal, and mechanical stress. Table 1 shows the typical property data for Teflon ? PFA 350.
Teflon ? PFA 350 is used when traditional extrusion and molding processes are required for producing products with the superior properties of a fluoroplastic resin. Compared to other thermoplastics, the high melt strength and thermal stability of Teflon ? PFA 350 can be used to improve processing rates. Compared with other fluoroplastics, creep resistance at high service temperatures provides a superior balance and level of end-use properties. Teflon ? PFA 350 combines the processing ease of conventional thermoplastics with many properties similar to those of polytetrafluoroethylene.
Properly processed products made from neat Teflon ? PFA 350 resin provide the superior properties characteristic of fluoroplastic resins: chemical inertness, exceptional dielectric properties, heat resistance, toughness and flexibility, low coefficient of friction, non-stick characteristics, negligible moisture absorption, low flammability, performance at temperature extremes, and excellent weather resistance.
In a flame situation, products of Teflon ? PFA 350 resist ignition and do not promote flame spread. When ignited by flame from other sources, their contribution of heat is very small and added at a slow rate with very little smoke.
Teflon ? PFA 350 meets the requirements of ASTM D3307, Type III
Products labeled PFA 350 and PFA 350 X are equivalent and all information in this document is applicable to both.
Typical Application
Applications for DuPont? Teflon ? PFA 350 include extruded tubing for use in handling aggressive fluids at high pressures; chemical linings for pipes used in the chemical processing industry; film for high flex service; and traditional extruded, injection-molded, or blow-molded articles requiring the unique performance of Teflon ? .
Description
DuPont? Teflon ? PFA 350 is a general-purpose fluoroplastic resin available in pellet form. Compared with other grades of Teflon ? PFA, its most unique features are a relatively low flow rate, greatly increased flex life, and enhanced resistance to environmental stress-cracking over both Teflon ? PFA 340 and 345 (Teflon ? PFA 350 has a typical MIT folding endurance of 500,000*, compared to that of 15,000 and 50,000 for Teflon ? PFA 340 and 345 respectively). Teflon ? PFA 350 is preferred when extended service is required in hostile environments involving chemical, thermal, and mechanical stress. Table 1 shows the typical property data for Teflon ? PFA 350.
Teflon ? PFA 350 is used when traditional extrusion and molding processes are required for producing products with the superior properties of a fluoroplastic resin. Compared to other thermoplastics, the high melt strength and thermal stability of Teflon ? PFA 350 can be used to improve processing rates. Compared with other fluoroplastics, creep resistance at high service temperatures provides a superior balance and level of end-use properties. Teflon ? PFA 350 combines the processing ease of conventional thermoplastics with many properties similar to those of polytetrafluoroethylene.
Properly processed products made from neat Teflon ? PFA 350 resin provide the superior properties characteristic of fluoroplastic resins: chemical inertness, exceptional dielectric properties, heat resistance, toughness and flexibility, low coefficient of friction, non-stick characteristics, negligible moisture absorption, low flammability, performance at temperature extremes, and excellent weather resistance.
In a flame situation, products of Teflon ? PFA 350 resist ignition and do not promote flame spread. When ignited by flame from other sources, their contribution of heat is very small and added at a slow rate with very little smoke.
Teflon ? PFA 350 meets the requirements of ASTM D3307, Type III
Teflon? PFA 350 物性表
| 基本信息 | |
|---|---|
| 黄卡编号 | |
| 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) | 2.0 | 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 |
PFA物料性能
1、 为少量全氟丙基全氟乙烯基醚与聚四氟乙烯的共聚物。熔融粘结性增强，溶体粘度下降，而性能与聚四氟乙烯相比无变化。此种树脂可以直接采用普通热塑性成型方法加工成制品。
2、长期使用温度-196--260摄氏度，有卓越的耐化学腐蚀性，对所有化学品都耐腐蚀，摩擦系数在塑料中最低，还有很好的电性能，其电绝缘性不受温度影响，有“塑料王”之称。
3、其耐化学药品性与聚四氟乙烯相似，比偏氟乙烯好。
4、其抗蠕变性和压缩强度均比聚四氟乙烯好，拉伸强度高，伸长率可达100-300%。介电性好，耐辐射性能优异。阻燃性达V0级。
5、适于制作耐腐蚀件，减磨耐磨件、密封件、绝缘件和医疗器械零件。
6、高温电线、电缆绝缘层，防腐设备、密封材料、泵阀衬套，和化学容器。
成型性能
1.结晶料,吸湿小。可采用通常得热塑性塑料得加工方法加工成制品。
2.流动性差，极易分解，分解时产生腐蚀气体。宜严格控制成型温度不要超过475摄氏度，模具应加热至150-200摄氏度，浇注系统对料流阻力应小。
3.半透明粒料，注塑、挤出成型。成型温度350-400摄氏度，475摄氏度以上容易引起变色或发生气泡。并注意脱模会较困难。
4、因熔融的材料对金属有腐蚀作用，长期生产，模具需要电镀铬处理。
全氟烷氧基树脂
PFA树脂相对来说是比较新的可熔融加工的氟塑料。
PFA的熔点大约为580F，密度为2.13— 2.16g/cc（克/立方厘米）。PFA与 PTFE和FEP相似，但在302T以上时，机械性能略优于FEP，且可在高达500F下的温度下使用，它的耐化学品性与PTFE相当。PFA的产品形式有用于模塑和挤塑的粒状产品，用于旋转模塑和涂料的粉状产品；其半成品有膜、板、棒和管材。美国市场经销的PFA树脂有DUPOut公司的Teflon牌、Daikin公司的Neoflon牌、Ansimont公司的Hthen牌、HOechst Celanese公司的 Hostafl牌。PFA的用途与FEP类似。
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