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 內容編輯

Teflon® PTFE NXT 75
聚四氟乙烯
DuPont Fluoropolymers

產品說明

Teflon® NXT 75 is a chemically modified polytetrafluoroethylene polymer.

When properly processed, Teflon® NXT 75 exhibits the superior properties typical of the fluoropolymer resins: nonaging characteristics, chemical inertness, heat resistance, toughness and flexibility, low coefficient of friction, nonstick characteristics, negligible moisture absorption, and weather resistance. In addition, this resin offers weldability, improved resistance to deformation under load, increased resistance to permeation of chemicals, and a higher dielectric breakdown voltage. This resin provides a high degree of weldability for applications where

the use of elevated pressure and temperature are limited.

Teflon® NXT 75 is a fine-cut resin designed for general compression molding of blocks and sheets and for use as a base resin for compounds. It can be used for such applications as: seal rings, valve seats, bearing pads, linings, encapsulations, and as a base resin for filled compounds. This resin is particularly useful in applications where welding of parts to other fluoropolymers such as PFA or standard PTFE is required, e.g., fluid-handling systems.

Properly processed products (sintered at high temperatures common to the industry) made from
Teflon® NXT 75 resin can qualify for use in contact with food in compliance with FDA Regulation 21 CFR 177.1550.

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  
    
 • 低摩擦系數 • 耐氣候影響性能良好 • 無粘性 
性能特點 • 可焊接 • 耐熱性，高  
 • 良好的柔韌性 • 韌性良好 • 吸潮性差 
    
 • 耐化學性良好 • 食品接觸的合規性  
用途 • 襯里 • 混合 • 軸承 
 • 閥門/閥門部件 • 密封  
    
機構評級 • FDA 21 CFR 177.1550   
形式 • 顆粒料   
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 2.16g/cm³ ASTM D4894
表觀密度 0.44g/cm³ ASTM D4894
收縮率 - 流動 2 4.7% ASTM D955
顆粒大小 33.0µm ASTM D4894
機械性能 額定值單位制 測試方法
抗張強度 31.0MPa ASTM D4894
伸長率 (斷裂) 500% ASTM D638
負載變形 3 (23°C, 1.4 MPa) 3.20% ASTM D621
電氣性能 額定值單位制 測試方法
介電強度 (0.0762 mm) 210kV/mm ASTM D149
補充信息 額定值單位制 測試方法
Void Content 4 0.0 到 0.50% 
Weld Strength 5 66 到 87% ASTM D4894

備注
1 一般屬性：這些不能被視為規格。

2 at preform pressure of 35 MPa [5,000 psi]

3 24 hrs, Method A

4 FTIR-Infra Red Spectroscopy

5 Specimens Welded After Sintering

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