PTFE PTFE 8B价格

 

Teflon® PTFE 8B
聚四氟乙烯
DuPont Fluoropolymers

产品说明

Teflon® PTFE 8B is a free-flowing white powder composed of relatively large particles. It has high bulk density and excellent powder flow. Compared with Teflon® PTFE 8 and Teflon® PTFE 8A, its most unique feature is particles designed to provide the highest quality of surface smoothness on finished parts, while maintaining outstanding flow and moldability.

The high bulk density and low compression ratio Teflon® PTFE 8B 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. Surface smoothness of molded parts is enhanced without sacrificing powder flow necessary for both automatic preforming and isostatic molding.

Teflon® PTFE 8B is used for high-speed automatic preforming of small parts that require optimum powder flow, a high level of physical properties, and very smooth surfaces. It is often preferred for isostatic molding.

Properly processed products made from neat Teflon® PTFE 8B 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 8B 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 • 耐化学性良好 
性能特点 • 刚性，良好 • 良好的成型性能 • 食品接触的合规性 
 • 抗溶解性 • 良好的流动性 • 延展性，高 
用途 • 衬里 • 密封  
 • 阀门/阀门部件 • 实验室器具  
    
机构评级 • FDA 21 CFR 177.1550   
外观 • 白色   
形式 • 粉状   
加工方法 • 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 0.71g/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/10 min  
Average Particle Size, ASTM D4894: 450 µm  

备注
1 一般属性：这些不能被视为规格。

 

 

 

 

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