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Help CenterNEMA L/PFCC42/3724 Phenolic Cotton Cloth Rod
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Description
Phenolic Cotton Rod is made of cotton fabric impregnated with phenolic resin, then heated intoprepreg and rolling into the rod shape, finally put into the different diameters molds, under hightemperature and pressure to cure into the rigid laminated rods. Usually for mechanical andelectrical applications.
PFCC42 phenolic cotton cloth rod, also called NEMA L Cotton Phenolic Rod, is made by impregnating cotton cloth with phenolic resin and then hot-pressed into a round cross-sectional rod. PFCC42 has very high mechanical properties. Various mechanical or electrical parts with high mechanical strength can be processed.
GOST Standard: 3721, 3722, 3723, 3724, 3725
IEC Standard: PFCC41, PFCC42, PFCC43
NEMA Standard: C, CE, L, LE
3722, 3723, 3724, 3725: Similar to NEMA Grade C, CE, L and LE Respectively. 3725 allows fine processing
PFCC41, PFCC42 and PFCC43: PFCC41(fine cloth), PFCC42(coarse cloth) and PFCC43(extra coarse cloth)
Features
Excellent dielectric strength, ensuring reliable electrical insulation in high-voltage systems.
Superior mechanical strength, resistant to bending, breaking, and wear.
High thermal stability, performing reliably up to 120°C.
Excellent dimensional stability under temperature, humidity, and mechanical stress.
Strong resistance to moisture, chemicals, and corrosion for durability in harsh environments.
Suitable for both electrical insulation and structural support applications.
Long-lasting and reliable performance in industrial, automotive, and aerospace sectors.
Applications
Electrical insulation components in transformers, switchgear, and circuit boards.
Structural supports in industrial machinery and heavy-duty equipment.
High-temperature environments such as aerospace and automotive sectors.
Mechanical components subjected to stress, impact, or wear.
Industrial equipment requiring combined electrical insulation, mechanical strength, and durability.
| Phenolic Cotton Cloth Laminated Rods | ||||||||
| Standard | Range | IEC | PFCC41 | PFCC42 | PFCC43 | - | - | - |
| NEMA | NEMA | LE | L | CE | C | - | - | |
| GOST | GB | 3725 | 3724 | 3723 | 3722 | 3721B | 3721 | |
| Physical Properties | ||||||||
| Density | - | g/cm3 | 1.20-1.40 | 1.20-1.40 | 1.25-1.45 | 1.25-1.45 | 1.25-1.45 | 1.25-1.45 |
| Water absorption rate | ≤ | mg/cm2 | 1.1% | 1.5% | 1.3% | 2% | 2% | 1% |
| Mechanical Properties | ||||||||
| Bending strength (Flextual strength)⊥ | ≥ | MPa | 125 | 95 | 90 | 110 | 80 | 110 |
| Compression strength | ≥ | MPa | 90 | 80 | 135 | 130 | - | - |
| Tensile Strength | ≥ | MPa | - | - | - | - | 60 | 79 |
| Electrical Properties | ||||||||
| Breakdown voltage ⊥in oil, 20±2℃ | ≥ | kV | 5 | 5 | 10 | - | 8 | 10 |
| Insulation resistance after 24h water immersion | ≥ | MΩ | 5 | 1 | 0.1 | - | 1x10^7Ω | 1x10^8Ω |
| Thermal Properties | ||||||||
| Temperature Index | - | ℃ | 120 | 120 | 120 | 120 | 120 | 120 |
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