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FEP DS618 is the copolymer of TFE and HFP, with good thermal stability, outstanding chemical inertness, good electrical insulation, and low coefficient of friction, enabling thermoplastic processing methods. DS618 are high molecular weight resins of low melt index, with low extrusion temperature, high extrusion speed which is 5-8 times of ordinary FEP resin. It is soft, anti-burst, and has good toughness. Conformable with Q/0321DYS 003
Technical index| Item | Unit
| DS618
| Test Method/ Standards | A | B | C | D | H | Appearance | / | Translucent particle,with impurities such as metal debris and sand,containing visible black particles percentage point less than 1% | HG/T 2904 | Melting Index | g/l0min | 16.1-20.0 | 20.1-24.0 | >24.1 | 12.1-16.0 | 24-42 | GB/T 3682 | Tensile Strength | MPa | 20.0 | 18.0 | 17.5 | 20.0 | 21.0 | GB/T 1040 | Elongation at break | % | 300 | 280 | 280 | 300 | 320 | GB/T 1040 | Relative Gravity | / | 2.12-2.17 | GB/T 1033 | Melting Point | °C | 265±10 | GB/T 28724 | Dielectric Constant (106Hz) | / | 2.15 | 2.07 | GB/T 1409 | Dissipation Factor(106Hz) | / | 5.7x10-4 | 5.7x10-4 | GB/T 1409 |
Mainly for aviation and aerospace industry, the MTR transport vehicles, automatic switching equipment, well test equipment, flame alarm systems, high-rise buildings, fire regional wires, cables, computers, communication networks, electrical fields, particularly applicable for high-speed extrusion small-caliber wire insulation material. It is more economical when used in where no high stress cracking resistance is required.
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