F4
Product Definition:
Cotton Molded Rod F4 laminates are composite materials made of cotton fabric impregnated with a resin system, usually an epoxy resin, and then molded under heat and pressure to create a rigid, strong structure.
Composites of Cotton Molded Rod F4 laminates refer to structures made by combining multiple layers or plies of Cotton Molded Rod F4 laminates in a specific orientation and sequence to achieve desired mechanical, thermal, and electrical properties. These composites can be designed to meet specific requirements for strength, stiffness, durability, and resistance to various environmental factors.
Overall, composites of Cotton Molded Rod F4 laminates are widely used in various industries, including aerospace, automotive, electronics, and construction, where lightweight, high-strength materials are needed.
Advantages and applications
Advantages:
- High mechanical strength: Cotton Molded Rod F4 has high mechanical strength, making it suitable for use in applications where strength and durability are important.
- Good electrical properties: This material has excellent electrical properties, making it ideal for use in electrical applications where high insulation properties are required.
- Chemical resistance: Cotton Molded Rod F4 is highly resistant to a wide range of chemicals, including acids, alkalis, and solvents. This makes it ideal for use in harsh environments.
- Low moisture absorption: This material has low moisture absorption, which means it is highly resistant to water and moisture damage.
Applications:
- Electrical insulation: Cotton Molded Rod F4 is commonly used as an insulating material in electrical applications such as transformers, switchgear, and electrical panels.
- Mechanical components: Its high mechanical strength and durability make it suitable for use in a wide range of mechanical components such as gears, bearings, and rollers.
- Chemical processing: Cotton Molded Rod F4's resistance to a wide range of chemicals makes it suitable for use in chemical processing equipment such as tanks and pipes.
- Marine applications: Its high resistance to water and moisture makes it ideal for use in marine applications such as boat hulls and decks.
- Aerospace applications: Cotton Molded Rod F4 is also used in the aerospace industry, where its high strength and excellent electrical properties make it suitable for use in components such as bearings and gears.
F4 Engineering Properties
| Key Characteristics | Test Method | Units | Values |
|---|---|---|---|
| Standards IEC | IEC 60893-3 | PF CC 204 | |
| Standards NEMA | NEMA | NEMA L | |
| MIL-I- | MIL-I-24768/15 | ||
| Sizes (in mm) | 1220 x 1220 | ||
| 1220 x 2440 | |||
| Tensile Strength | ASTM D638 | psi | 12000 |
| Modulous of elasticity (in Tension) | Cw - ASTM D638 | psi | 100000 |
| Modulous of elasticity (in flexure) | ASTM D638 | psi | 800000 |
| Compressive Strength | ASTM D695 | psi | 35000 |
| Rockwell Hardness | LW - ASTM D790 | M Scale | M-90 |
| Electric Strength | ASTM D257 | kV | 20 |
| Dielectric strength perpendicular | ASTM D149 | V/mil | |
| short time test | 1/8 in. | -- | |
| Step by step test | 1/8 in. | -- | |
| Breakdown Voltage | ASTM D348 | 12 | |
| Izod Impact Strength | ASTM D256 | ft-lb/in | 1.35 |
| Bonding Strength | ASTM D229 | lb | 1650 |
| Permittivity | ASTM 709-01 | at 1 MHz | -- |
| Dissipaton factor | ASTM 709-01 | at 1 MHz | -- |
| Comparative Tracking index | ASTM D2132 | pt. electrodes | 175 |
| Specific Gravity | ASTM D348 | G/C^3 | 1.5 |
| Specific Volume | ASTM D348 | kV/mm | 20.4 |
| Thermal Expansion | ASTM D229 | cm/cm. C | 20 x 10 ^-6 |
| Thermal conductivity | ASTM D229 | Cal.cm/s.cm2. C | 7 |
| Specific Heat | ASTM D229 | cal/g.C | 0.4 |
| Temperature Index | ASTM D229 | C | 155 |
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