Product Description
Phenolic Cotton Fabric Laminate Sheet is made of cotton fabric impregnated with phenolic resin through baking, pressing, and curing processes. It is widely utilized as insulating structural components in motors, mechanical systems, and electrical equipment. It is also highly effective for use in transformer oil environments.
Featuring superior mechanical and electrical properties, this material is ideal for precision mechanical parts such as gears, guide wheels, saw guides, and other structural components requiring durability and insulation.
| No. |
Inspection Item |
Unit |
Standard Value |
Test Result |
| 1 | Bending strength | Mpa | ≥110 | 122 |
| 2 | Elastic modulus of surface bending | Mpa | ≥7000 | 7400 |
| 3 | Impact strength (Simply supported beam) | KJ/m² | ≥7.0 | 7.5 |
| 4 | Impact strength (Cantilever beam method) | KJ/m² | ≥5.9 | 6.3 |
| 5 | Shear strength Parallel layer | Mpa | ≥20 | 24 |
| 6 | Bonding strength | N | ≥3200 | 5060 |
| 7 | Tensile strength | Mpa | ≥60 | 65 |
| 8 | Electrical strength Vertical (in 90ºC oil) | kV/mm | ≥0.5 | 0.56 |
| 9 | Frequency dielectric constant | / | ≤5.5 | 5.4 |
| 10 | Proof tracking index | / | ≥100 | 108 |
| 11 | Density | g/cm³ | 1.3-1.4 | 1.38 |
| 12 | Water absorption | mg | ≤540 | 451 |
Packing & Delivery
Shipping options include Sea, Air, or Express according to your requirements. We ensure high-standard protection for all goods based on size, hardness, and specific product details to ensure safe transit.
Frequently Asked Questions
Q1: What are the main materials in Bakelite sheets?
A: Our Bakelite sheets (Phenolic Cotton Fabric Laminate) are composed of high-quality cotton cloth impregnated with phenolic resin, processed under high temperature and pressure.
Q2: Can these sheets be used in oil-immersed transformers?
A: Yes, these sheets feature excellent electrical stability and are specifically suitable for use in transformer oil as insulating structural parts.
Q3: What is the thermal rating of the Phenolic Cotton sheet?
A: The material is rated at Thermal Class E 120, meaning it can safely operate at temperatures up to 120°C.
Q4: What mechanical parts are typically made from this material?
A: Due to its high mechanical strength, it is widely used to manufacture gears, guide wheels, saw guides, bushings, and other precision mechanical components.
Q5: Are the sheets certified for quality standards?
A: Yes, our production follows ISO9001 certification and the products conform to GB/T1303.6-2009 standard requirements.
Q6: What is the standard size and production capacity?
A: The standard sheet size is 1020*1220mm or 1020*2020mm, with a monthly production capacity of approximately 50 tons.
Texdura Textile
