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 內容編輯

Teflon® PTFE 7C
聚四氟乙烯
DuPont Fluoropolymers

產品說明

Teflon® PTFE 7C is a white powder with very small particle size. Its most unique feature is the irregular, fibrous character of the particles.

The small particle size of Teflon® PTFE 7C helps to minimize voids even at relatively low molding pressure. The fibrous particles promote good capture and uniform distribution of inorganic fillers when they are added to modify the mechanical properties of moldings. Teflon® PTFE 7C exhibits relatively high mold shrinkage.

Teflon® PTFE 7C is preferred for moldings requiring optimum mechanical and electrical properties. Its relatively low bulk density limits the size of moldings from a given mold or press opening. It is often preferred for making filled compounds, especially with metal powders that are difficult to mix because of density differences.

Properly processed products made from neat Teflon® PTFE 7C 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 7C 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.

總體

材料狀態 • 已商用：當前有效   
供貨地區 • 北美洲 • 歐洲  
 • 拉丁美洲 • 亞太地區  
    
性能特點 • 低摩擦系數 • 抗溶解性 • 煙釋放，低 
 • 剛性，良好 • 耐化學性良好 • 延展性，高 
    
用途 • 薄膜 • 隔膜 • 片材 
 • 墊圈 • 密封裝置  
    
機構評級 • FDA 21 CFR 177.1550   
外觀 • 白色   
形式 • 粉狀   
加工方法 • 燒結 • 壓縮模塑  

物理性能 額定值單位制 測試方法
比重 2.15g/cm³ ASTM D792
表觀密度 0.25g/cm³ ASTM D1895
收縮率 - 流動 6.0% ASTM D955
機械性能 額定值單位制 測試方法
抗張強度 37.9MPa ASTM D638
伸長率 (斷裂) 400% ASTM D638
熱性能 額定值單位制 
熔融溫度 327 到 342°C 
補充信息  
Average Particle Size, ASTM D4894: 28 µm  

備注
1 一般屬性：這些不能被視為規格。

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