Material: | PFA |
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Kind: | Transparent Plastic |
Water Absorption: | 1.5%~3.5% |
Samples: |
A transparent color
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Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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Payment Method: | |
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Initial Payment Full Payment |
Currency: | US$ |
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Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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When choosing the right fluoropolymer for your process, consider some significant performance differences between the two fluoropolymers. The difference in alkoxy substituents allows PFA to be fused by conventional injection molding and screw extrusion techniques, while PTFE cannot. The PFA is more flexible, but has a lower flexural life, so it cannot withstand the ability to fold repeatedly. PTFE has slightly higher heat resistance, but is lacking in comparison to fluidity, creep resistance, and thermal stability. The melting points of PFA and PTFE are 260°C and 327°C, respectively. Although PFA has better salt spray resistance, water absorption and weather resistance have a greater impact on PFA than PTFE. Finally, the most significant difference between the two is that the dielectric strength of PFA is 3-4 times that of PTFE. |
PFA molding When the melting finger of the PFA product is in the range of 0.8~3.0g/10min, the molecular weight is relatively high, the viscosity is large, and it is not easy to flow, and it is generally suitable for processing by using the molding method. The molding temperature is 330~380ºC, the pressure is 5.0~14.0MPa, and the mold is kept at the molding temperature for 20~30min, and then the melt is slowly cooled to 200~240ºC under pressure before the mold can be released. The characteristics of high viscosity of PFA melt, low critical shear rate and high forming temperature should be taken into account when designing the mold. |
diameter | maximum diameter | diameter | maximum diameter |
5 | 6 | 55 | 56 |
12 | 12.7 | 60 | 61 |
15 | 16 | 65 | 66 |
20 | 22 | 70 | 71 |
25 | 26 | 75 | 76 |
30 | 31 | 80 | 81 |
35 | 36 | 85 | 86 |
40 | 41 | 90 | 91 |
45 | 46 | 95 | 96 |
50 | 51 | 100 | 101 |
PFA Physical property table | |||
physical properties | rated value | system of units | measurgin method |
specific gravity | 2.14 | g/cm³ | ASTM D792 |
Melt rate(372ºC/5.0kg) | 18-25 | g/10min | ASTM D1238 |
water absorption(24hr) | 0.030 | % | ASTM D570 |
hardnessl | 55-65 | - | ASTM D2240 |
melting temperature | 302-310 | ºC | - |
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