PTFE Molding Powders (small particle size)
Item | PX21 | PX21-1 | ||
A | B | A | B | |
Tensile Strength, MPa ≥ | 30.0 | 27.4 | ||
Elongation at Break, %≥ | 300 | |||
Bulk Density, g/L | 345~440 | |||
Average Particle Size, μm | 20~40 | 40~70 | 20~40 | 40~70 |
Accumulated Heat Weight Loss,%≤ | 0.05 | 0.06 | ||
Shrinkage, %≤ | 4.5 | 5.0 | ||
Expansivity, %≤ | 8.0 | 9.0 | ||
Molecular Weight, 106≥ | 4.0 | 2.0 | ||
Standard Relative Density,g/cm3 | 2.13~2.19 | |||
Processing Method | Molding | Molding | ||
Application Recommended | Large sized articles | Filling | ||
Appearance and Purity | Its plate is with clean surface and even texture. No metal impurity is permitted. The impurities should be no more than 2 and their size should be no more than 1mm. | Its plate is with clean surface and even texture and impurities and flecks are no more than 6, among which, impurities of 0.5mm-2mm are no more than 2 and flecks sized 2mm-3mm are no more than 1. | ||
Experimental Results | There should be no more than 2 flecks sized no bigger than 1mm on every 100×100mm2 of circular plate sized Φ250×2mm. | |||
Properties:
Excellent chemical inertness; Outstanding resistance to chemical corrosion, such as strong acid, alkali, strong oxidant, etc; Exceptional resistance to high, low temperature, and to abrasion; Can be used at temperature range from 200~+250 for long period; Superior electric insulation, which is not affected by temperature and frequency; Non-adhesive to all other materials; Non-absorption of water; Flame-retardation;Applications:
Could be mixed with fillers such as graphite, glass-fibre, silica dioxide, molybdenuym disulfide, bronze powder etc,to make filled articles;Proceeded into pipes, sheets, rods, films, other articles and parts such as bearing, washer, piston ring and bridge slide, etc.; Widely used in electrical, electronic, chemicals, aircraft, machine and national defense industries.PTFE Molding Powders (small particle size)
