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Teflon® PFA TE9725

Perfluoroalkoxy
DuPont Fluoropolymers
产品说明：
For inventory control purposes product name may be followed by an X.

Products labeled PFA TE9725 and PFA TE9725 X are equivalent and all information in this document is applicable to both.

Typical Application
DuPont™ Teflon ® PFA TE9725 is an ideal resin for applications involving compounding and compression molding, as well as extruded tubing and other profiles for hose, electrical insulators, and sleeving; industrial film and products made from film; and injection or blow-molded articles requiring superior electrical, chemical, and thermal properties. Teflon ® PFA TE9725 offers a slightly lower melt flow rate than Teflon ® PFA TE9724, ultimately providing a higher degree of stress-crack resistance.

Description
DuPont™ Teflon ® PFA TE9725 is a general purpose fluoroplastic resin available as loosely compacted fluff. It is intended for use in special application processes in consultation with DuPont. Compared with other grades of Teflon ® PFA, its most unique features are a relatively low flow rate and properties that make it suitable for a variety of processes and demanding end uses, especially compounding and compression molding. Table 1 shows the typical property data for Teflon ® PFA TE9725.

Teflon ® PFA TE9725 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 TE9725 can be used to improve processing rates. Compared with other thermoplastics, Teflon ® PFA TE9725 provides a superior balance and level of end-use properties at high service temperatures. Teflon ® PFA TE9725 combines the processing ease of conventional thermoplastics with many properties similar to those of polytetrafluoroethylene.

Properly processed products made from neat Teflon ® PFA TE9725 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 TE9725 resist ignition and do not promote flame spread. When ignited by flame from other sources, their contribution of heat is very small and dded at a slow rate with very little smoke.

Teflon ® PFA TE9725 meets the requirements of ASTM D3307, Type II
物性信息：

基本信息
特性	低摩擦系数 低吸湿性 低烟度 良好的电气性能 良好的熔体强度 良好的柔韧性 流动性低 耐化学性良好 耐气候影响性能良好 耐热性，中等 热稳定性，良好 韧性良好
用途	薄膜 电气/电子应用领域 复合 管道 管件 型材
形式	Fluff
加工方法	复合 挤出 树脂传递成型 压缩模塑 注射成型

物理性能	额定值	单位制	测试方法
比重	2.14	g/cm³	ASTM D792
熔流率（熔体流动速率） (372°C/5.0 kg)	1.7	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 (23°C)	26.0	MPa	ASTM D3307, ISO 12086
伸长率 (断裂, 23°C)	300	%	ASTM D3307, ISO 12086
弯曲模量 (23°C)	625	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
0.250 mm 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
MIT Folding Endurance 3(200.0 µm)	5.0E+5	Cycles	ASTM D2176
Weather and Chemical Resistance: Outstanding

备注
1 .	方法A（短时间）
2 .	These results are based on laboratory tests under controlled conditions and do not reflect performance under actual fire conditions, current rating is a typical theoretical value.
3 .	Depending on fabrication conditions

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*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。