医疗级PTFE，FDA食品接触的合规性

Teflon® PTFE 8A X

聚四氟乙烯

 

The Chemours Company

 

Technical Data

 

产品说明

Teflon ® PTFE 8A X is a free-flowing white powder composed of relatively large particles. It has high bulk density and good powder flow. It's most unique features are improved moldability at lower pressure and improved surface smoothness of finished parts. The high bulk density and low compression ratio of Teflon® PTFE 8A X permit the use of shallow molds for small parts and complex shapes. Good powder flow is necessary for use in equipment that feeds resin automatically, and for filling deep and narrow molds that are pressed isostatically. Reduced pressure is an advantage for moldings with large surface area and for isostatic molding. Teflon ® PTFE 8A X is often preferred for molding thick sheets and for isostatic moldings. It is sometimes used for ram extrusion of rod and tubing with thicker cross sections. Properly processed products made from neat Teflon ® PTFE 8A X provide the superior properties typical of the fluoropolymer resins: retention of properties after service at 260 °C (500 °F), useful properties at -240 °C (-400 °F), chemical inertness to nearly all industrial chemicals and solvents, and low friction and antistick surfaces. Dielectric properties are outstanding and stable with frequency and temperature. Molded products have moderate stiffness and high ultimate elongation. In a flame situation, products of Teflon ® PTFE 8A X resist ignition and do not themselves promote flame spread. When ignited by flame from other sources, their contribution of heat is small and with very little smoke. Statements, or data, regarding behavior in a flame situation are not intended to reflect hazards presented by this or any other material when under actual fire conditions.

 

Typical Applications

Many end products are fabricated from moldings of Teflon ® PTFE 8A X, including small parts such as ball valve seats, seals, discs, and lab ware. Thick molded sheets are stock shapes made from Teflon ® PTFE 8A X. It is also chosen for lining pipes, valves, and valve plugs—and for ducting, expansion bellows, piston rings, and other large complex moldings.

总体

材料状态 • 已商用：当前有效

资料 1 • Technical Datasheet (English)

搜索 UL 黄卡 •  The Chemours Company

• Teflon® PTFE

供货地区 • 北美洲 • 欧洲

• 拉丁美洲 • 亚太地区

• 低摩擦系数 • 良好的成型性能 • 食品接触的合规性

• 低烟度 • 良好的电气性能

特性 • 延高的拉伸率

• 刚性，良好 • 良好的流动性

• 优良外观

• 抗溶剂性 • 耐化学性良好

用途 • 衬里 • 密封件 • 实验室器具

• 阀门/阀门部件 • 片材

机构评级 • FDA 21 CFR 177.1550 • 欧洲 No 10/2011

外观 • 白色

形式 • 粉状

加工方法 • 烧结 • 柱塞压出

 

物理性能 额定值(英制) 额定值(公制) 测试方法

密度 / 比重 2.15 2.14g/cm³ ASTM D4894

表观密度 0.68g/cm³ 0.68g/cm³ ASTM D4894

收缩率 - 流动 3 0.028in/in 2.8% ASTM D4894

平均颗粒尺寸 19mil 490µm ASTM D4894

机械性能 额定值(英制) 额定值(公制) 测试方法

抗张强度 6000psi 41.4MPa ASTM D4894

伸长率 (断裂) 330% 330% ASTM D4894

热性能 额定值(英制) 额定值(公制) 测试方法

熔融峰值温度 ASTM D4894

-- 4 603 到 639°F 317 到 337°C

-- 5 630 到 666°F 332 到 352°C

补充信息 额定值(英制) 额定值(公制)

Flowability 6 221g/min 221g/min

 

 

 

 

 

 

 

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