塑胶原料 > 行业新闻 > 今日新到产品

Teflon® PTFE 7C X

Teflon® PTFE 7C X

2018-09-08 18:06:21

  

Teflon® PTFE 7C X      
Polytetrafluoroethylene      
Product Description:      
Teflon ® PTFE 7C X is a white powder with small particle size. Its most unique feature is the irregular, fibrous character of the particles. The small particle size of Teflon ® PTFE 7C X helps to minimize voids even at relatively low molding pressures. 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 X exhibits relatively high mold shrinkage. Teflon ® PTFE 7C X 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 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 7C 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 molded or fabricated from moldings of Teflon ® PTFE 7C X, or made with filled compounds based on Teflon ® PTFE 7C X. The filled compounds provide a wide choice of modified mechanical properties. End products using Teflon ® PTFE 7C X include skived film and sheet, gaskets, bridge or pipeline bearing pads, piston rings, and diaphragms.
       
       
General  
Features  Food Contact Acceptable Good Stiffness Low Friction
     
Good Chemical Resistance High Elongation Low Smoke Emission
     
Good Electrical Properties High Shrinkage Solvent Resistant
     
Uses  Bearings Diaphragms Gaskets
     
Compounding Film Sheet
     
Agency Ratings  FDA 21 CFR 177.1550
Appearance  White
Forms  Powder
Processing Method  Sintering

Physical Nominal Value Unit Test Method
Specific Gravity 2.15 g/cm³ ASTM D4894
Apparent Density 0.26 g/cm³ ASTM D4894
Molding Shrinkage - Flow  2 5.7 % ASTM D4894
Average Particle Size 27 µm ASTM D4894
Mechanical Nominal Value Unit Test Method
Tensile Strength 42.1 MPa ASTM D4894
Tensile Elongation (Break) 400 % ASTM D4894
Thermal Nominal Value Unit Test Method
Peak Melting Temperature 　 　 ASTM D4894
-- 3 317 to 337 °C 　
-- 4 332 to 352 °C 　
  　 　 　
2at preform pressure of 35 MPa 　 　 　
3Second 　 　 　
4Initial 　 　 　

上一篇:Teflon® PTFE 7A X

下一篇:Teflon® PTFE 807N X

点击这里给我发消息 点击这里给我发消息