Description
* {
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: ‘Helvetica Neue’, Arial, sans-serif;
}
body {
padding: 30px;
line-height: 1.6;
background-color: #ffffff;
color: #000000;
}
.container {
max-width: 1200px;
margin: 0 auto;
}
.intro {
margin-bottom: 30px;
padding: 20px;
border: 1px solid #000000;
border-radius: 8px;
background-color: #f2f2f2;
color: #000000;
}
h1 {
font-size: 2.2rem;
margin-bottom: 10px;
}
.subtitle {
font-size: 1.1rem;
opacity: 0.9;
color: #ffffff;
}
.card {
background-color: #ffffff;
border: 1px solid #000000;
border-radius: 8px;
margin-bottom: 30px;
overflow: hidden;
box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.card-header {
background-color: #000000;
color: #ffffff;
padding: 16px 20px;
font-size: 1.3rem;
display: flex;
align-items: center;
gap: 10px;
}
.card-body {
padding: 20px;
}
table {
border-collapse: collapse;
width: 100%;
border: 1px solid #000000;
margin: 0;
}
th, td {
border: 1px solid #000000;
padding: 12px 15px;
text-align: left;
font-size: 0.95rem;
}
th {
background-color: #000000;
color: #ffffff;
font-weight: 600;
}
tr:nth-child(even) {
background-color: #f2f2f2;
}
.category-row {
background-color: #f2f2f2;
font-weight: 500;
color: #000000;
}
.notes-section {
margin-top: 40px;
padding: 22px;
background-color: #f2f2f2;
border-left: 4px solid #000000;
border-radius: 4px;
color: #000000;
}
.notes-title {
font-weight: 600;
margin-bottom: 16px;
font-size: 1.25rem;
color: #000000;
}
.notes-list {
list-style-type: none;
}
.notes-list li {
margin-bottom: 12px;
padding-left: 12px;
border-left: 2px solid #000000;
color: #000000;
}
.contact {
margin-top: 40px;
padding: 20px;
background-color: #000000;
color: #ffffff;
text-align: center;
border-radius: 8px;
font-weight: 600;
}
sup {
font-size: 75%;
vertical-align: super;
color: #000000;
}
i {
color: #ffffff;
}
footer {
text-align: center;
padding: 20px;
background-color: #000000;
color: #ffffff;
font-size: 0.9rem;
margin-top: 30px;
}
@media (max-width: 768px) {
body {
padding: 15px;
}
h1 {
font-size: 1.8rem;
}
th, td {
padding: 8px 10px;
font-size: 0.9rem;
}
.card-header {
font-size: 1.1rem;
padding: 12px 15px;
}
.card-body {
padding: 15px;
}
.intro, .notes-section, .contact {
padding: 15px;
}
}
.intro {
margin: -2em auto 30px auto; /* Top negative margin moves it up */
padding: 20px;
border: 1px solid #000000;
border-radius: 8px;
background-color: #f2f2f2;
color: #000000;
}
NEPEM Proton Exchange Membrane
Thickness and Basis Weight Properties
| Membrane Type | Thickness (microns, μm) | Weight (g/m²) |
|---|---|---|
| N-3010 | 12 | 23.6 |
| N-3015 | 15 | 29.5 |
| N-211 | 25 | 50.0 |
| N-212 | 50 | 99.0 |
Mechanical Properties
| Physical Property | N-3010 (MD) | N-3010 (TD) | N-3015 (MD) | N-3015 (TD) | N-211/212 |
|---|---|---|---|---|---|
| Tensile Test (23°C, 50% RH) – Tensile Strength (MPa) | ≥42 | ≥42 | ≥40 | ≥40 | ≥28/28 |
| Tensile Test (23°C, 50% RH) – Tensile Modulus (MPa) | ≥400 | ≥400 | ≥350 | ≥350 | ≥400/400 |
| Tensile Test (23°C, 50% RH) – Elongation at Break (%) | ≥150 | ≥150 | ≥180 | ≥180 | ≥100/120 |
| Specific Gravity | 1.97 | 1.97 | 1.97 | 1.97 | 1.97 |
Other Properties
| Other Properties | N-3010 | N-3015 | N-211/212 |
|---|---|---|---|
| Conductivity2 (S/cm) | ≥0.100 | ≥0.110 | ≥0.100 |
| Hydrogen Crossover3 [cm³·cm/(cm²·s·0.1MPa)] | <5.00×10⁻⁸ | <4.50×10⁻⁸ | / |
| Hydrogen Crossover Current Density4 (mA/cm²) | <2.0 | <2.0 | / |
Swelling Properties
| Swelling Properties | N-3010 (MD) | N-3010 (TD) | N-3015 (MD) | N-3015 (TD) | N-211/212 |
|---|---|---|---|---|---|
| Water Content5 (%) | 10.0±3.0 | 10.0±3.0 | 10.0±3.0 | 10.0±3.0 | 5.0±3.0 |
| Water Uptake6 (%) | 50.0±5.0 | 50.0±5.0 | 50.0±5.0 | 50.0±5.0 | 50.0±5.0 |
| Thickness Swelling Rate (23°C, 50% RH), % increase | |||||
| Water soaked at 23°C, 50% RH (%) | ≤10 | ≤15 | ≤10 | ≤15 | / |
| Water soaked at 100°C, 50% RH (%) | ≤30 | ≤40 | ≤30 | ≤40 | / |
| Linear Expansion (23°C, 50% RH), % increase | |||||
| Water soaked at 23°C, 50% RH (%) | ≤3 | ≤4 | ≤4 | ≤5 | ≤4 |
| Water soaked at 100°C, 50% RH (%) | ≤5 | ≤5 | ≤7 | ≤7 | ≤20 |
- 1 Measurements were performed on membranes conditioned at 23 °C and 50% relative humidity (RH).
- 2 Conductivity was measured at 23 °C and 100% RH.
- 3 Hydrogen crossover was determined at 23 °C and 100% RH.
- 4 Hydrogen crossover current was measured in a membrane electrode assembly (MEA) with H₂ as the feed gas, at 80 °C under fully humidified conditions.
- 5 Water content of the membrane was quantified after conditioning at 23 °C and 50% RH (reported on a dry weight basis).
- 6 Water uptake was assessed by exposing dry membranes to water at 100 °C for 1 hour, with results reported on a dry weight basis.
