Modified PolyTetraFluoroEthylene (mPTFE) is a chemically modified form of PTFE. Less than 1% of the fluorine atoms in the PTFE chain are substituted by a perfluoroalkoxy. Modified PTFE has a lower molecular weight than PTFE, which means that particles fuse better.
As a result, the end product is more compact, with fewer voids, and with better weldability than PTFE. The perfluoroalkoxy modifier in modified PTFE acts as an inhibitor of crystallization, ensures better distribution of the crystallites in the amorphous matrix and therefore, the cold flow is drastically reduced.
Depending on the percentage of modifiers, PB11000 materials can be used in applications that require high creep resistance or high flexibility.
PBY Material Codes:
PB11000D - Modified PTFE Creep Resistance
PB11001D - Modified PTFE High Flex
PB11000D meets ASTM D4894 Type III Grade 1 requirements.
Property | Test Method | Units | PB11000D | PB11001D |
---|---|---|---|---|
Color | - | - | White | White |
Specific Gravity | ASTM D792 | - | 2.140 - 2.220 | 2.140 - 2.180 |
Hardness Shore D | ASTM D2240 | - | 59 - 69 | 57 - 67 |
Tensile Strength, min. | ASTM D4894 | PSI [MPa] | 4,060 [28.0] | 3,000 [20.7] |
Elongation at Break, min. | ASTM D4894 | % | 450 | 300 |
Service Temperature High | - | °F [°C] | 500 [260] | 500 [260] |
Service Temperature Low | - | °F [°C] | -436 [-260] | -436 [-260] |
Second Melt Peak Temp. | ASTM D3418 | °F [°C] | 615 [324] | 615 [324] |
Glass Transition Temp. | ASTM D3418 | °F [°C] | -143 [-97]; 246 [119] | -143 [-97]; 246 [119] |
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