Bakelite sheet, a classic and highly durable thermoset plastic laminate, remains an indispensable material across countless engineering and industrial applications worldwide. Known chemically as phenolic resin or phenol-formaldehyde, this material is formed by applying heat and pressure to layers of paper, canvas, or fiberglass cloth impregnated with synthetic resin. The resulting product is a rigid, hard sheet renowned for its exceptional electrical insulation, mechanical strength, and thermal stability. For over a century, its unique combination of properties has made it the material of choice where reliability under demanding conditions is non-negotiable. At Kaxite Sealing, we specialize in manufacturing precision-engineered Bakelite sheets that meet the rigorous standards of modern industry, ensuring performance, safety, and longevity in your most critical applications.
The enduring popularity of Bakelite sheets stems from a set of core characteristics that are difficult to match with many modern alternatives. These intrinsic properties provide significant advantages in design and application.
By leveraging these properties, Kaxite Sealing Bakelite sheets provide engineers with a reliable, versatile, and economical material solution.
Our product line is engineered to cater to diverse industrial needs. Below are the detailed specifications for our standard Bakelite sheet grades. Custom formulations and dimensions are available upon request.
| Grade | Base Material | Color | Density (g/cm³) | Tensile Strength (MPa) | Flexural Strength (MPa) | Dielectric Strength (kV/mm) | Continuous Service Temperature (°C) |
|---|---|---|---|---|---|---|---|
| PF-CP (Phenolic Cotton Paper) | Cellulose Paper | Brown/Black | 1.35 - 1.45 | 70 - 100 | 110 - 140 | 12 - 18 | 120 - 140 |
| PF-CC (Phenolic Cotton Canvas) | Cotton Fabric | Natural/Yellow | 1.30 - 1.40 | 60 - 90 | 90 - 120 | 10 - 15 | 110 - 130 |
| PF-FG (Phenolic Fiber Glass) | Glass Fabric | Natural/White | 1.70 - 1.90 | 280 - 350 | 300 - 400 | 15 - 22 | 180 - 200 |
| Parameter | Standard Range | Tolerance |
|---|---|---|
| Sheet Thickness | 0.5mm to 100mm | ±0.1mm to ±0.5mm (varies by thickness) |
| Sheet Width | 1000mm, 1220mm, 1250mm | ±5mm |
| Sheet Length | 2000mm, 2440mm, 2500mm, 3000mm | ±5mm |
The versatility of Bakelite allows it to serve as a critical component in a vast array of sectors. Kaxite Sealing sheets are trusted in the following applications:
What is the main difference between paper, canvas, and glass-based Bakelite sheets?
The base material (reinforcement) defines the key mechanical and thermal properties. Paper-based (PF-CP) offers excellent electrical insulation and smooth surface finish. Canvas-based (PF-CC) provides better impact resistance and machinability. Glass-based (PF-FG) delivers the highest mechanical strength, thermal resistance, and dimensional stability, suitable for the most demanding structural and high-temperature applications.
How do I machine a Bakelite sheet effectively?
Bakelite sheets machine well with standard carbide-tipped or high-speed steel tools. Use sharp tools, moderate feed rates, and adequate cooling (compressed air is often preferred over liquid coolants to prevent swelling). Always wear appropriate PPE like dust masks and eye protection, as machining generates fine phenolic dust. For best results, consult Kaxite Sealing's technical datasheet for specific grade recommendations.
What is the maximum continuous operating temperature for a standard Bakelite sheet?
This varies by grade. Paper and canvas-based grades typically have a maximum continuous service temperature in the range of 110°C to 140°C (230°F to 284°F). Glass-reinforced grades can withstand temperatures up to 180°C to 200°C (356°F to 392°F) continuously. Intermittent exposure to slightly higher temperatures may be possible but should be evaluated based on the specific application.
Are Bakelite sheets resistant to chemicals and oils?
Yes, Bakelite exhibits good resistance to a wide range of chemicals, including most oils, greases, solvents, and mild acids and alkalis. This makes it suitable for use in automotive, machinery, and chemical processing environments. However, resistance is not universal; prolonged exposure to strong acids, alkalis, or certain oxidizing agents should be avoided. For critical chemical exposure, please request our chemical resistance chart.
Can Kaxite Sealing provide custom-shaped or pre-fabricated Bakelite parts?
Absolutely. In addition to supplying standard sheets, rods, and tubes, Kaxite Sealing offers comprehensive fabrication services. We can precision-cut, drill, mill, punch, and CNC machine components to your exact drawings and specifications. This saves you time, reduces material waste, and ensures the parts meet your precise dimensional and performance requirements.
How does Bakelite compare to modern engineering plastics like PEEK or PTFE?
Bakelite remains highly competitive. While PEEK offers higher temperature performance and PTFE superior chemical inertness, they come at a significantly higher cost. Bakelite provides an outstanding balance of electrical insulation, mechanical strength, thermal resistance, and flame retardancy at a fraction of the price. For many applications where extreme performance (e.g., over 250°C) is not needed, Bakelite is the most cost-effective and reliable choice.
Is the material safe and compliant with modern regulations?
Kaxite Sealing Bakelite sheets are manufactured to meet relevant international standards for safety and performance. They are inherently flame-retardant and self-extinguishing. We can provide material certifications and ensure our products comply with industry-specific requirements upon request. Always ensure proper dust extraction during machining to maintain a safe working environment.
Good Quality Bakelite Insulation Board is an early plastic material & thermosetting phenol formaldehyde resin, formed from a condensation reaction of phenol with form aldehyde. Orange Red Bakelite Insulation Board is a hard dense material made by applying heat and pressure to layers of paper or glass cloth impregnated with phenolic resin, Bakelite phenolic sheet is produced in dozens of commercial grades and with various additives to meet diverse mechanical, electrical and thermal requirements, there are Don`t anti-static and Anti-static (ESD) of the Bakelite sheets, please kindly pay attention to this when you order.
Produced from a woven cloth which is thoroughly impregnated with a phenolic resin and cured,High Quality Bakelite 4ftx8ft Insulation Panel is a physically strong material which offers excellent mechanical strength and machinability.
Electrical Insulating Bakelite Sheet is made of phenolic resin and fabric paper.This product has higher mechanical property,water and heat resistance,more stable dielectric property after soaking. Specification:The thermal temperature is 150 ℃.The thickness is from 0.8-55mm,55mm and longer.The color is orange red and black.The density is 1.30-1.45g/cm³.The width is 1020mm,the length is 2040mm. Application:Electrical Insulating Bakelite is used as insulating structural parts for electric machines,apparatus equipment and oil transformer.
For Gasket Phenolic Black 1/4 Bakelite Sheet is a generic named material based on the thermosetting phenol formaldehyde resin.1/4 Inch Black Bakelite Sheet was the first plastic made from synthetic polymers.Insulation Black Bakelite Sheet was used for its nonconductive and heat-resistant properties in radio and telephone casings and electrical insulators. The retro appeal of old Black Bakelite Sheet products, especially kitchenware and toys, has made them quite collectible in recent years. Black Bakelite Sheet is a hard, dense material made by applying heat and pressure to layers of paper or glass cloth impregnated with synthetic resin. These layers of laminations are usually of cellulose paper, cotton fabrics, synthetic yarn fabrics, glass fabrics or unwoven fabrics. When heat and pressure are applied to the layers, a chemical reaction (polymerization) transforms the layers into a high-pressure thermosetting industrial laminated plastic.
High Temperature Resistance Bakelite Hylam Sheets is the combination of hard and high density material and impregnated paper using phenolic resin or fiber glass cloth and pressed under heat and pressure. This industrial laminate normally consists of fiber paper, cotton fabric, chemical fiber yarn and fiber glass, etc. When specific heat and pressure are applied to these layers, a chemical reaction combines the layers into a high-pressure thermosetting plastic.
