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DuPont Fuel Cells Nafion PFSA Polymer Dispersions

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DuPont Fuel Cells Nafion PFSA Polymer Dispersions ( dupont-fuel-cells-nafion-pfsa-polymer-dispersions )

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DuPont Fuel Cells DuPontTM Nafion® PFSA Polymer Dispersions D520/521, D1020/1021, D2020/2021 Description DuPontTM Nafion® PFSA polymer dispersions are made from chemically stabilized perfluorosulfonic acid/PTFE copolymer in the acid (H+) form, and are available in several polymer content and dispersant compositions. Typical uses include fabrication of thin films and coating formulations for fuel cell membranes, catalyst coatings, sensors, and a variety of electrochemical applications. Typical Composition Property Polymer Content (wt. %) Water Content (wt. %) VOC Content (wt. %) 1-Propanol Ethanol <4<4−−<2<2 D 520 < 1 0.92 − 0.94 > 1.00 1.03 – 1.12 10 – 40 D 521 < 1 0.92 − 0.94 > 0.92 0.95 – 1.03 10 – 40 D 1020 < 1 1.05 − 1.07 > 1.00 1.03 – 1.12 2 – 10 D 1021 < 1 1.05 − 1.07 > 0.92 0.95 – 1.03 2 – 10 D 2020 < 1 1.01 − 1.03 > 1.00 1.03 – 1.12 50 – 500 D 2021 < 1 1.01 − 1.03 > 0.92 0.95 – 1.03 50 – 500 Nafion® PFSA Polymer Dispersions by Composition Mixed Ethers and Other VOCs Specific Gravity Available Acid Capacity (meq/g, H+ polymer basis) Total Acid Capacity (meq/g, H+ polymer basis) Viscosity (cP; at 25°C and 40 sec-1 Shear Rate) Note: 1 cP = 1 mPa·s Order Information 5.0 min. 5.4 max. 45 ± 3 50 ± 3 48 ± 3 5.0 min. 5.4 max. 45 ± 3 50 ± 3 48 ± 3 10.0 min. 12.0 max. 87 − 90 < 1 − 10.0 min. 12.0 max. 87 − 90 < 1 − 20.0 min. 22.0 max. 34 ± 2 46 ± 2 44 ± 2 20.0 min. 22.0 max. 34 ± 2 46 ± 2 44 ± 2 Dispersions are available in the following containers (4-liter minimum order): 4-liter container package (air or land delivery) 20-liter container (air or land delivery) 190-liter drum (land delivery)

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