PTFE PTFE 8A价格

 

Teflon® PTFE 8A
聚四氟乙烯
DuPont Fluoropolymers

产品说明

Teflon® PTFE 8A is a free-flowing white powder composed of relatively large particles. It has high bulk density and good powder flow. Its 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 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 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 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 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.

总体

材料状态 • 已商用：当前有效   
供货地区 • 北美洲 • 欧洲  
 • 拉丁美洲 • 亚太地区  
    
 • 低摩擦系数 • 良好的表面光洁度 • 食品接触的合规性 
性能特点 • 刚性，良好 • 良好的成型性能 • 烟释放，低 
 • 抗溶解性 • 耐化学性良好 • 延展性，高 
 • 衬里 • 密封 • 条材 
用途 • 阀门/阀门部件 • 片材  
 • 管道 • 实验室器具  
机构评级 • FDA 21 CFR 177.1550   
外观 • 白色   
形式 • 颗粒料   
加工方法 • 挤出 • 烧结 • 压缩模塑 

物理性能 额定值单位制 测试方法
比重 2.15g/cm³ ASTM D792
表观密度 0.69g/cm³ ASTM D1895
收缩率 - 流动 2.8% ASTM D955
机械性能 额定值单位制 测试方法
抗张强度 27.6MPa ASTM D638
伸长率 (断裂) 300% ASTM D638
热性能 额定值单位制 
熔融温度 327 到 342°C 
补充信息  
Powder Flow, ASTM D1855 Modified: 300 g/min  
Average Particle Size, ASTM D4894: 480 µm  

备注
1 一般属性：这些不能被视为规格。

 

 

 

 

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