Teflon® PTFE 669 X

DuPont ™ Teflon ® PTFE 669 X is a polytetrafluoroethylene fine powder resin used primarily for paste extrusion. Teflon ® PTFE 669 X offers the excellent combination of properties typical of the Teflon ® fluoropolymer resins:

• non-aging characteristics;

• chemical inertness to nearly all industrial chemicals and solvents;

• exceptional dielectric properties, stable with frequency and temperature;

• toughness and flexibility;

• low coefficient of friction;

• non-stick characteristics;

• negligible moisture absorption;

• excellent weather resistance;

• service temperature up to 260°C (500°F);

• useful properties at -240 °C (-400 °F);

• moderate stiffness and high ultimate elongation.

Teflon ® PTFE 669 X is designed for processing at very low to medium reduction ratios (10:1 to 500:1). It is particularly suitable for production of pipe liners and general tubing.

Teflon ® PTFE 669 X meets the requirements of ASTM D4895-91a, Type I, Grade 2, Class A.

Typical Applications
Teflon ® PTFE 669 X is mainly used for the production of pipe liners used in the chemical industry. It is also used for making tubing and unsintered tape for mechanical, chemical and electrical applications.

基本信息
黄卡编号	E54681-244687
特性	低摩擦系数 低吸湿性 刚性，良好 抗溶剂性 良好的电气性能 良好的柔韧性 耐化学性良好 耐气候影响性能良好 韧性良好 食品接触的合规性 延高的拉伸率
用途	衬里 带子 管件
机构评级	FDA 21 CFR 177.1550 欧洲 10/1/2011 12:00:00 AM
形式	粉状
加工方法	挤出

物理性能	额定值	单位制	测试方法
比重		g/cm³	ISO 12086, ASTM D4895
表观密度		g/cm³	ASTM D4895, ISO 12086
平均颗粒尺寸
--		µm	ASTM D4895
--		µm	ISO 12086

补充信息	额定值	单位制	测试方法
Extrusion Pressure - at RR = 100:1
--		MPa	ASTM D4895
--		MPa	ISO 12086

热性能	额定值	单位制	测试方法
熔融温度			ASTM D4895, ISO 12086
-- 1		°C	ASTM D4895, ISO 12086
-- 2		°C	ASTM D4895, ISO 12086

备注
1 .	Second
2 .	Initial